阅读说明：本技术 一种可移动式梯子 (Movable ladder ) 是由 魏弦 周雨航 郭小兰 周玉婷 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种可移动式楼梯,包括横梁(5)、支架(2)、固定踏板(6)、活动踏板(1)、弹性件(4)、连杆(13)和移动杆(3),支架(2)下端设有滚轮(9),上端与横梁(5)连接；固定踏板(6)两端分别与一支架(2)和连杆(13)连接,连杆(13)另一端与支架(2)上端连接,活动踏板(1)一端与固定踏板(6)铰接,另一端置于另一支架(2)上横杆上,弹性件(4)两端分别与活动踏板(1)和横梁(5)连接,移动杆(3)与活动踏板(1)铰接。通过踩踏活动踏板(1)作用在移动杆(3)上,使得作用在移动杆(3)上的水平分力驱动滚轮(9)运动,可实现单人操作。(The invention discloses a movable stair which comprises a cross beam (5), a support (2), a fixed pedal (6), a movable pedal (1), an elastic piece (4), a connecting rod (13) and a movable rod (3), wherein the lower end of the support (2) is provided with a roller (9), and the upper end of the support is connected with the cross beam (5); fixed footboard (6) both ends are connected with a support (2) and connecting rod (13) respectively, and the connecting rod (13) other end is connected with support (2) upper end, and activity footboard (1) one end is articulated with fixed footboard (6), and on another support (2) upper horizontal pole was arranged in to the other end, elastic component (4) both ends were connected with activity footboard (1) and crossbeam (5) respectively, and carriage release lever (3) are articulated with activity footboard (1). The horizontal component force acting on the moving rod (3) drives the roller (9) to move by stepping the movable pedal (1) to act on the moving rod (3), so that the single-person operation can be realized.)

1. A movable ladder is characterized in that: the device comprises a cross beam (5) and a support (2), wherein the cross beam (5) and the support (2) are symmetrically arranged, the support (2) is obliquely arranged, the upper end of the support (2) is connected into an isosceles trapezoid through the cross beam (5), the side surface of the support (2) is of a mesh-shaped structure, two ends of a vertical rod extend outwards, a roller (9) is arranged at the lower extending end of the vertical rod, and the upper extending end of the vertical rod is correspondingly connected with the end part of the cross beam (5); still including fixed footboard (6), activity footboard (1), elastic component (4), connecting rod (13) and carriage release lever (3), fixed footboard (6) level sets up and the last horizontal pole of one end and a support (2) is connected, the other end is connected with connecting rod (13) one end, the other end and support (2) extension end of connecting rod (13) are connected, the one end of activity footboard (1) is articulated with the tip of keeping away from the junction with fixed footboard (6), the other end can be arranged in on another support (2) the horizontal pole, the one end and the activity footboard (1) lateral surface middle part of elastic component (4) are connected, the other end is connected with crossbeam (5), carriage release lever (3) upper end is articulated with activity footboard (1) downside, and the length of carriage release lever (3) is greater than the distance of fixed footboard (6) to gyro wheel (9).

2. A portable ladder as set forth in claim 1 wherein: the length of the moving rod (3) is equal to the sum of the distance from the fixed pedal (6) to the roller (9) and the distance from the hinged part of the upper moving rod (3) to the hinged part of the movable pedal (1).

3. A portable ladder as set forth in claim 1 wherein: the elastic part (4) is a tubular spring.

4. A portable ladder as set forth in claim 1 wherein: the moving rod (3) is of an H-shaped structure, and a rubber seat (7) is sleeved at the lower end of the moving rod (3).

5. A portable ladder as set forth in claim 1 wherein: the idler wheel (9) on the side of the movable pedal (1) is provided with a locking sheet, and the idler wheel (9) can be locked by pressing the locking sheet.

6. A portable ladder according to claim 5, wherein: the lower part of the moving rod (3) is provided with a groove-shaped structure locking rod (8), and the moving rod (3) is rotated to enable the locking rod (8) to be in contact with a locking sheet to control the rolling of the roller (9) at the side of the movable pedal (1).

7. A portable ladder as set forth in claim 1 wherein: a limiting pin (10) is vertically arranged on the inner wall of a vertical rod of the support (2) at the side of the movable pedal (1), and the limiting pin (10) is positioned above a hinge shaft of the movable pedal (1).

8. A portable ladder as set forth in claim 1 wherein: the locking device is arranged on the support (2) on the side of the movable pedal (1) and can keep the included angle between the movable pedal (1) and the fixed pedal (6) to be 0 degree.

9. A portable ladder as set forth in claim 8 wherein: locking device includes fixing base (11) and fixed block (12), fixing base (11) set up on support (2) of activity footboard (1) side, and fixed block (12) one end is articulated with fixing base (11), rotates fixed block (12) and can make the one end and the contact of activity footboard (1) up end of fixed block (12), and the hinge sets up with activity footboard (1) up end is perpendicular.

10. A portable ladder as set forth in claim 1 wherein: the cross beam (5) is of a square structure, and two ends of the cross beam are respectively connected with the vertical rod extending ends of the support (2) correspondingly.

Technical Field

The invention discloses a movable ladder, and belongs to the technical field of stairs.

Background

The ladder is composed of ladder sections (also called ladder runs), platforms (rest platforms) and enclosing members of continuous rungs. When the ordinary ladder is moved in the using process, the ladder can be moved only by getting on or off the ladder, so that the time and the energy are wasted for getting on or off the ladder frequently, and the ladder is unsafe. Or at least two persons are needed to realize the purpose of movement, and the single structure and the use mode cause a plurality of inconveniences when used by a single person.

Disclosure of Invention

The invention aims to solve the technical problems that the existing stairs need to move by means of external force and are not woven by a single person.

The technical scheme adopted by the invention for solving the technical problems is as follows: a movable ladder comprises two beams and two supports, wherein the two beams and the two supports are symmetrically arranged, the two supports are obliquely arranged, the upper ends of the supports are connected into an isosceles trapezoid through the beams, the side surface of each support is of a herringbone structure, the two ends of each vertical rod extend outwards, the lower extending end of each vertical rod is provided with a roller, and the upper extending end of each vertical rod is correspondingly connected with the end part of each beam; still including fixed footboard, activity footboard, elastic component, connecting rod and carriage release lever, fixed footboard level sets up and one end is connected with the last horizontal pole of a support, and the other end is connected with connecting rod one end, and the other end and the support of connecting rod extend the end and be connected, and the one end of activity footboard is kept away from the tip of junction articulated with fixed footboard, and on another support upper horizontal pole can be arranged in to the other end, the one end and the activity footboard lateral surface middle part of elastic component are connected, and the other end is connected with the crossbeam, and the carriage release lever upper end is articulated with activity footboard downside, and the length of carriage release lever is greater than the distance of.

The length of the moving rod in the device is equal to the sum of the distance from the fixed pedal to the roller and the distance from the hinge joint of the upper moving rod to the hinge joint of the movable pedal.

Wherein, in the device, the elastic part is a tubular spring.

Wherein, in the device, the movable rod is in an H-shaped structure, and the lower end of the movable rod is sleeved with a rubber seat.

The roller on the side of the movable pedal in the device is provided with a locking sheet, and the roller can be locked by pressing the locking sheet.

Furthermore, the lower part of the moving rod in the device is provided with a groove-shaped structure locking rod, and the moving rod is rotated to enable the locking rod to be in contact with the locking sheet so as to control the rolling of the roller on the side of the movable pedal.

The inner wall of the vertical rod of the support on the side of the movable pedal in the device is vertically provided with a limit pin, and the limit pin is positioned above the hinge shaft of the movable pedal.

Wherein, the bracket on the side of the movable pedal in the device is provided with a locking device which can keep the included angle between the movable pedal and the fixed pedal to be 0 degree.

Furthermore, in the above device, the locking device includes a fixing seat and a fixing block, the fixing seat is disposed on the support on the side of the movable pedal, one end of the fixing block is hinged to the fixing seat, the fixing block is rotated to enable one end of the fixing block to contact with the upper end face of the movable pedal, and the hinge shaft is perpendicular to the upper end face of the movable pedal.

The cross beam in the device is of a square structure, and two ends of the cross beam are respectively connected with the extending ends of the vertical rods of the support correspondingly.

The invention has the beneficial effects that: the device acts on the moving rod by treading the movable pedal, and the horizontal component force acting on the moving rod can directly drive the roller to move due to the inclined arrangement of the moving rod, so that the movement of the whole device is realized. The device can realize automatic movement of the ladder, is safe, and avoids the trouble of workers getting on and off the ladder. Meanwhile, the device has simple structure and light whole body, and is also beneficial to moving. The moving mode is simple, only manual operation is needed, no electric equipment is added, and the manufacturing cost is reduced. And the application range is wide, and the operation is convenient.

Drawings

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

FIG. 2 is an enlarged view of the structure at I in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the structure of the present invention during use;

FIG. 4 is an enlarged view of the structure at II in FIG. 3 according to the present invention.

Labeled as: the pedal comprises a movable pedal 1, a support 2, a moving rod 3, an elastic part 4, a cross beam 5, a fixed pedal 6, a rubber seat 7, a locking rod 8, a roller 9, a limiting pin 10, a fixed seat 11, a fixed block 12 and a connecting rod 13.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the movable ladder of the present invention comprises two cross beams 5 and two brackets 2, wherein the two cross beams 5 and the two brackets 2 are symmetrically arranged, the two brackets 2 are obliquely arranged, the upper ends of the brackets 2 are connected into an isosceles trapezoid through the cross beams 5, the side surface of each bracket 2 is in a herringbone structure, two ends of a vertical rod extend outwards, a roller 9 is arranged at the lower extending end of the vertical rod, and the upper extending end of the vertical rod is correspondingly connected with the end of the cross beam 5; still including fixed footboard 6, activity footboard 1, elastic component 4, connecting rod 13 and carriage release lever 3, fixed footboard 6 level sets up and one end is connected with a support 2's last horizontal pole, the other end is connected with connecting rod 13 one end, connecting rod 13's the other end and support 2 extend the end and be connected, the one end of activity footboard 1 is articulated with the tip that fixed footboard 6 kept away from the junction, the other end can be arranged in on another support 2 the horizontal pole, the one end and the 1 lateral surface middle part of activity footboard of elastic component 4 are connected, the other end is connected with crossbeam 5, carriage release lever 3 upper end is articulated with 1 downside of activity footboard, and the length of carriage release lever 3 is greater than the distance of fixed footboard 6 to gyro wheel 9. The technical personnel in the field can understand that, the main principle of this device is that when the people stands on fixed footboard 6, activity footboard 1 can upwards rotate under the effect of elastic component 4, can make activity footboard 1 counter-rotate through trampling activity footboard 1, and the terminal surface middle part is articulated under the carriage release lever 3 upper end and the activity footboard 1, make the trampling effort that people's operating personnel exerted at this moment directly act on carriage release lever 3 after offsetting elastic component 4 effort, and the lower extreme and the ground contact of carriage release lever 3, make the effect that acts on carriage release lever 3 can decompose into the vertical power and the horizontal force that acts on ground of carriage release lever 3, and because whole device passes through gyro wheel 9 and ground contact, make the static friction very little, this horizontal force can directly drive whole device and remove. Meanwhile, when the operator does not step on the movable pedal 1, the movable pedal 1 continues to rotate upwards under the action of the elastic piece 4, and the whole device can be moved by stepping on the movable pedal 1 repeatedly. The side face of the support 2 is preferably selected to be of a structure shaped like a Chinese character 'mu', so that the support 2 is composed of two vertical rods arranged in parallel and cross rods arranged between the vertical rods at intervals, the vertical rods can be supported by actual pass, and the cross rods can be stepped to realize vertical ladders. The end part of the vertical rod of the optimized bracket 2 extends outwards, meanwhile, the lower extending end of the vertical rod is provided with a roller 9, the upper extending end of the vertical rod is correspondingly connected with the end part of the cross beam 5, and the whole device is in an isosceles trapezoid structure due to the connection mode; simultaneously this device still includes fixed footboard 6, activity footboard 1, elastic component 4, connecting rod 13 and carriage release lever 3, with fixed footboard 6 level setting and one end be connected with a support 2's last horizontal pole, the other end is connected with connecting rod 13 one end, the other end and the support 2 of connecting rod 13 extend the end and be connected for whole fixed footboard 6 is connected fixedly with support 2, can be used to support human weight. And the one end of preferred activity footboard 1 is articulated with the tip that fixed footboard 6 kept away from the junction, and on another support 2 upper cross rod can be arranged in to the other end, the one end and the 1 lateral surface middle part of activity footboard of elastic component 4 are connected, and the other end is connected with crossbeam 5, and this kind of structure setting makes activity footboard 1 can make activity footboard 1 upwards overturn under the effect of elastic component 4, but two of elastic component 4 for the symmetry setting are preferred, make activity footboard 1 atress more even. Simultaneously with the upper end of carriage release lever 3 with the 1 downside of activity footboard articulated, and the length of carriage release lever 3 is greater than the distance of fixed footboard 6 to gyro wheel 9, this kind of structure setting makes when activity footboard 1 level sets up, and 3 slopes to set up, can guarantee to trample when activity footboard 1, 3 lower extremes of carriage release lever can contact with ground simultaneously, applys a horizontal effort for whole device and drives whole device.

Preferably, the length of the moving rod 3 in the above device is equal to the sum of the distance from the fixed pedal 6 to the roller 9 and the distance from the hinge joint of the upper moving rod 3 to the hinge joint of the movable pedal 1. As can be understood by those skilled in the art, since the upper end of the moving rod 3 is directly hinged and fixed with the movable pedal 1, in practical use, when a person stands on the fixed pedal 6, the movable pedal 1 can rotate upwards under the action of the elastic member 4, the movable pedal 1 can rotate reversely by pedaling the movable pedal 1, and the lower end of the moving rod 3 is in contact with the ground. Make whole carriage release lever 3 slope setting, it can make whole device remove to push down movable footboard 1 this moment, so the length of carriage release lever 3 should be greater than the distance of fixed footboard 6 to gyro wheel 9, so the length of the preferred carriage release lever 3 of this device equals the distance of fixed footboard 6 to gyro wheel 9 and the articulated department of last carriage release lever 3 to the articulated department of movable footboard 1 and, make carriage release lever 3 when the mobile device, whole atress can avoid carriage release lever 3 to bend the damage better.

Preferably, in the above device, the elastic member 4 is a tubular spring. As can be understood by those skilled in the art, in order to reduce the manufacturing cost, the device preferably uses the elastic member 4 as a tubular spring, so that through holes can be actually drilled at appropriate positions on the outer side of the movable pedal 1 and the cross beam 5, and the two ends of the elastic member 4 can be directly hung in the through holes.

Preferably, in the above device, the moving rod 3 is an H-shaped structure, and a rubber seat 7 is sleeved at the lower end of the moving rod 3. As will be understood by those skilled in the art, since the moving rod 3 of the device is mainly supported to move the whole device, the device preferably has an H-shaped moving rod 3, and further preferably has a rubber seat 7 sleeved on the lower end of the moving rod 3 to increase friction force in order to prevent the lower end of the moving rod 3 from slipping.

Preferably, in the above device, the roller 9 on the movable pedal 1 side is provided with a locking sheet, and the roller 9 can be locked by pressing the locking sheet. It will be appreciated by those skilled in the art that in order to facilitate the fixing of the entire device, the device is preferably provided with a locking tab on the roller 9 on the movable pedal 1 side, and the locking of the roller 9 can be achieved by pressing the locking tab. The structure is the prior art, and the roller 9 with the locking device can be directly purchased.

Preferably, in the above device, the lower part of the moving rod 3 is provided with a locking rod 8 with a groove structure, and the moving rod 3 is rotated to enable the locking rod 8 to contact with the locking sheet to control the rolling of the roller 9 at the side of the movable pedal 1. As can be understood by those skilled in the art, in order to conveniently realize the movement of the whole device by a single person standing on the bracket 2 and the locking and unlocking of the whole device, the device is preferably provided with a groove-shaped structure locking rod 8 at the lower part of the moving rod 3, and the moving rod 3 is rotated to enable the locking rod 8 to be in contact with a locking sheet to control the rolling of the roller 9 at the side of the movable pedal 1.

Preferably, in the device, a limit pin 10 is vertically arranged on the inner wall of a vertical rod of the support 2 at the side of the movable pedal 1, and the limit pin 10 is positioned above a hinge shaft of the movable pedal 1. As can be understood by those skilled in the art, in order to define the included angle between the movable pedal 1 and the fixed pedal 6 and facilitate continuous pedaling of the movable pedal 1, the device preferably has a limit pin 10 vertically arranged on the inner wall of the vertical rod of the bracket 2 on the side of the movable pedal 1, the limit pin 10 is used for preventing the movable pedal 1 from continuing to rotate under the action of the elastic element 4, and the limit pin 10 is preferably located above the hinge shaft of the movable pedal 1.

Preferably, in the above device, a locking device is arranged on the bracket 2 at the side of the movable pedal 1, and the locking device can keep the included angle between the movable pedal 1 and the fixed pedal 6 to be 0 °. It will be appreciated by those skilled in the art that, for the sake of practical convenience, the present device is preferably provided with a locking device on the bracket 2 on the side of the movable step 1, by which the angle between the movable step 1 and the fixed step 6 can be maintained at 0 °. That is, the movable step 1 is kept horizontally so as to support the operator standing thereon when the stand 2 is not moved.

Preferably, among the above-mentioned device locking device includes fixing base 11 and fixed block 12, fixing base 11 sets up on the support 2 of activity footboard 1 side, and fixed block 12 one end is articulated with fixing base 11, rotates fixed block 12 and can make the one end of fixed block 12 and the contact of activity footboard 1 up end, and the hinge sets up with activity footboard 1 up end is perpendicular. It can be understood by those skilled in the art that the present device is only a specific structure of the preferred locking device, and includes a fixed seat 11 and a fixed block 12, and preferably, the fixed seat 11 is disposed on the bracket 2 on the side of the movable pedal 1, specifically, on the side walls on the opposite sides of the two brackets 2, and one end of the fixed block 12 is hinged to the fixed seat 11, so that the lower end surface of the fixed block 12 can be coplanar with the upper end surface of the movable pedal 1, and the fixed block 12 can be rotated so that one end of the fixed block 12 contacts with the upper end surface of the movable pedal 1, and the hinge shaft is disposed perpendicular to the upper end surface of the movable pedal 1.

Preferably, in the above device, the cross beam 5 is in a square structure, and two ends of the cross beam are respectively connected with the extending ends of the vertical rods of the support 2 correspondingly. It will be appreciated by those skilled in the art that the present device is preferred to have the specific shape of the cross member 5, since in use, a person can stand directly on the fixed pedal 6 and/or the movable pedal 1, and the two ends are provided with the channels for the person to go up and down, so that the protection on the two sides needs to be added to effectively prevent the person from falling down. Therefore, the cross beam 5 is preferably of a square structure, two ends of the cross beam 5 can be directly connected with the vertical rod extending ends of the support 2 which is obliquely arranged, and people can be prevented from falling off through the cross beam 5 and the vertical rods of the support 2.