CN210528387U

CN210528387U - Portable passive pedal elevator

Info

Publication number: CN210528387U
Application number: CN201921588921.9U
Authority: CN
Inventors: 严华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-05-15
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses a portable passive pedal companion ladder, including the counter weight base, cut the fork connecting rod, running-board and elevating system, the running-board is established directly over the counter weight base through cutting the fork connecting rod, elevating system includes the cylinder body, the piston axle, one-way piston and trachea, the cylinder body top is equipped with piston hole and air vent, the piston axle passes through the piston hole and stretches into in the cylinder body, one-way piston establishes the bottom at the piston axle, trachea one end and the inside lower extreme intercommunication of cylinder body, the other end is equipped with the ooff valve, cylinder body bottom and piston axle top respectively with cut adjacent body of rod or the alternately body of rod swing joint in the fork connecting rod. The lifting ladder is light in overall weight, compact in structural size, flexible to carry and use, high in stability and safety and particularly suitable for daily life of families, and can be freely walked when being worn on feet; in addition, the height of the elevator can be automatically lifted only by stepping up and down without any external force for assisting lifting, and the elevator is energy-saving, environment-friendly, low in use cost and wide in market prospect.

Description

Portable passive pedal elevator

Technical Field

The utility model relates to an elevator technical field, concretely relates to portable passive pedal elevator.

Background

Elevators (platforms) are widely used in the fields of construction, industrial production, fire fighting, logistics, etc., among which scissor elevators, which are driven by hydraulic or pneumatic pressure and can lift several tons of heavy objects up to several meters or even several tens of meters in height, are the most common. However, such elevators are heavy, inconvenient to move and carry, and require a high-power hydraulic (pneumatic) pump as a power source, which is high in cost, and these factors cause that the elevators cannot be popularized and used in daily family life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable passive pedal companion ladder, it has solved traditional companion ladder comparatively heavily, is not convenient for remove and carry to and need defects such as extra power supply, use cost height.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

portable passive pedal companion ladder, including counter weight base, cut fork connecting rod, running-board and elevating system, the running-board is established directly over the counter weight base through cutting the fork connecting rod, elevating system includes cylinder body, piston shaft, one-way piston and trachea, the cylinder body top is equipped with piston hole and air vent, the piston shaft passes through the piston hole and stretches into in the cylinder body, one-way piston establishes in the bottom of piston shaft, and one-way piston and cylinder body inner wall cooperation contact and restriction air current can only pass one-way piston from top to bottom, trachea one end and the inside lower extreme intercommunication of cylinder body, the other end are equipped with the ooff valve, cylinder body bottom and piston shaft top respectively with cut adjacent body of rod or the alternately body of rod swing joint in the fork connecting rod.

The improved structure of the piston is characterized in that the one-way piston is composed of a connecting shaft, a cylindrical piston body and a plurality of one-way valve plates, the cylindrical piston body is connected to the bottom end of the piston shaft through the connecting shaft, a plurality of valve holes which are communicated up and down are formed in the cylindrical piston body, and the one-way valve plates are arranged at the bottom end of the cylindrical piston body and correspond to the positions of the valve holes one by one and are used for opening or closing the valve holes.

The further improvement is that the switch valve is arranged on the side of the pedal.

The further improvement lies in that the bottom of the counterweight base is provided with a non-slip mat.

In a further improvement, the lifting mechanism has one or two lifting mechanisms, and when the lifting mechanism has two lifting mechanisms, the air pipes in the two lifting mechanisms are connected to the same switch valve after being converged.

The improved counterweight base is characterized in that a pair of limiting rails is arranged on one side of the upper surface of the counterweight base, a pair of bearing seats is arranged on the other side of the upper surface of the counterweight base, one side of the bottom end of the scissor type connecting rod is movably connected into the limiting rails through a first rotating shaft, and the other side of the bottom end of the scissor type connecting rod is movably connected into the bearing seats through a second rotating shaft.

The improved structure is characterized in that the limiting rail is provided with a strip-shaped through groove, the two ends of the first rotating shaft are provided with idler wheels, the idler wheels are clamped in the strip-shaped through groove, and the diameter of each idler wheel is slightly smaller than the vertical width of the strip-shaped through groove.

The foot pedal is further improved in that a foot fixing device is arranged on the upper surface of the foot pedal.

The foot fixing device is further improved in that the foot fixing device is composed of a plurality of thread gluing belts used for fixing the instep and a baffle used for fixing the heel, the front side surface of the baffle is in a concave arc shape, and a sponge layer is arranged on the front side surface.

The further improvement is that the length and width dimensions of the counterweight base and the pedal are both 36cm multiplied by 18cm, and the maximum height of the scissor type connecting rod after being stretched is 1.5 m.

The beneficial effects of the utility model reside in that: the lifting ladder is light in overall weight, compact in structural size, flexible to carry and use, high in stability and safety and particularly suitable for daily life of families, and can be freely walked when being worn on feet; in addition, the height of the elevator can be automatically lifted only by stepping up and down without any external force for assisting lifting, and the elevator is energy-saving, environment-friendly, low in use cost and wide in market prospect.

Drawings

Fig. 1 and 2 are state diagrams of the elevator at different lifting heights;

FIG. 3 is a schematic view of the structure of the inside of the cylinder;

FIG. 4 is a schematic structural view of the stirring fixture;

in the figure: 1. a counterweight base; 2. a scissor-type connecting rod; 3. a foot pedal; 4. a cylinder body; 5. a piston shaft; 6. a one-way piston; 601. a connecting shaft; 602. a cylindrical piston body; 603. a one-way valve plate; 604. a valve bore; 7. an air tube; 8. a piston bore; 9. a vent hole; 10. an on-off valve; 11. a non-slip mat; 12. a limiting track; 13. a bearing seat; 14. a first rotating shaft; 15. a second rotating shaft; 16. a strip-shaped through groove; 17. a roller; 18. a hook and loop fastener; 19. a baffle plate; 20. a sponge layer.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Referring to fig. 1 to 4, the portable passive pedal elevator includes a counterweight base 1, a scissor-type connecting rod 2, a pedal 3 and a lifting mechanism, wherein the counterweight base 1 generally has a weight of about 3-4kg, which increases stability and provides a gravity action for lifting, the pedal 3 is disposed right above the counterweight base 1 through the scissor-type connecting rod 2, the scissor-type connecting rod 2 is formed by connecting a plurality of light alloy rods, and matching connection structures of shafts and bearings are adopted between adjacent rods (for example, the

rods

2a and 2c in fig. 2 are adjacent rods) and crossing rods (for example, the

rods

2a and 2b in fig. 2 are crossing rods), so as to ensure flexibility. Elevating system includes cylinder body 4, piston shaft 5, one-way piston 6 and

trachea

7, 4 tops of cylinder body are equipped with piston hole 8 and air vent 9, air vent 9 is used for guaranteeing 4 first one and outside air intercommunication of cylinder body, piston shaft 5 stretches into the cylinder body through piston hole 8, one-way piston 6 is established in the bottom of piston shaft 5, one-

way piston

6 and 4 inner wall cooperation contacts of cylinder body and restriction air current can only pass one-way piston 6 from top to bottom, 7 one ends of trachea and the inside lower extreme intercommunication of cylinder body 4, the other end is equipped with ooff valve 10. 4 bottom of cylinder body and 5 tops of piston shaft respectively with cut adjacent body of rod or the alternately body of rod swing joint in the fork connecting rod 2, the connected mode can adopt the cooperation structure of axle and bearing equally, when piston shaft 5 extension, cuts fork connecting rod 2 and risees gradually, when piston shaft 5 shrink, cuts fork connecting rod 2 and reduces gradually.

The one-way piston 6 is composed of a connecting shaft 601, a cylindrical piston body 602 and a plurality of one-way valve plates 603, the cylindrical piston body 602 is connected to the bottom end of the piston shaft 5 through the connecting shaft 601, a plurality of valve holes 604 which are communicated up and down are formed in the cylindrical piston body 602, and the one-way valve plates 603 are arranged at the bottom end of the cylindrical piston body 602, correspond to the positions of the valve holes 604 one by one and are used for opening or closing the valve holes 604.

Particularly, the switch valve 10 is arranged on the side edge of the pedal 3, and the switch valve 10 can be manually controlled by a user when the user squats; the bottom of counter weight base 1 is equipped with slipmat 11, avoids wearing the back companion ladder and takes place to slide, causes danger.

The lifting mechanism has one or two, when only one lifting mechanism is provided, the bearing of the cylinder 4 and the one-way piston 6 can reach more than 300 jin, when two lifting mechanisms are provided, two sets of structures of the cylinder 4, the piston shaft 5, the one-way piston 6 and the like are respectively equipped, the bearing of each cylinder 4 and the one-way piston 6 can reach more than 150 jin, and the air pipes 7 in the two lifting mechanisms are converged and then connected to the same switch valve 10, so that the unified control is facilitated.

One side of counter weight base 1 upper surface is equipped with a pair of spacing track 12, and the opposite side is equipped with a pair of bearing frame 13, and one side (being the end of the body of rod 2a in fig. 2) of scissor type connecting rod 2 bottom is through first pivot 14 swing joint in spacing track 12, and the opposite side (being the end of the body of rod 2b in fig. 2) is through second pivot 15 swing joint in bearing frame 13. The bar-shaped through groove 16 is formed in the limiting rail 12, the two ends of the first rotating shaft 14 are provided with the idler wheels 17, the idler wheels 17 are clamped in the bar-shaped through groove 16, the diameter of the idler wheels 17 is slightly smaller than the vertical width of the bar-shaped through groove 16, the idler wheels 17 can be guaranteed to be attached to the upper wall or the lower wall of the bar-shaped through groove 16 to roll, when the idler wheels 17 roll to the leftmost side of the bar-shaped through groove 16 in a figure, the elevator is completely folded, when the idler wheels 17 roll to the rightmost side of the bar-shaped through groove 16 in the figure, the elevator rises to the highest point, the elevator cannot continuously rise. Meanwhile, a corresponding locking device can be additionally arranged in the strip-shaped through groove 16 as required to realize the adjustment of the maximum height.

In addition, the upper surface of the pedal 3 is provided with a foot fixing device, the foot fixing device is composed of a plurality of thread gluing belts 18 used for fixing the instep and a baffle 19 used for fixing the heel, the front side surface of the baffle 19 is in a concave arc shape, a sponge layer 20 is arranged on the front side surface, the wearing comfort is improved, and the tightening degree of the thread gluing belts 18 can be adjusted according to the sizes of feet of different users.

The utility model discloses in, counter weight base 1 and running-board 3's length and width size are 36cm x 18cm, cut fork connecting rod 2 and stretch the back maximum height and be 1.5m, and of course this size is unfixed, can adjust as required.

When the ladder is needed, such as bulb replacement, interior decoration and the like, a user stands on the pedal 3 of the elevator, and the foot fixing device is used for fixing the foot to prevent falling off; then, the switch valve 10 is closed, the feet are alternately lifted to perform stepping action, in the process of lifting one foot each time, the scissor type connecting rod 2 below the foot is stretched under the action of the gravity of the counterweight base 1, the height is increased, the corresponding piston shaft 5 extends, the gas is gradually filled into the lower part of the cylinder body 4, and the roller 17 moves along the upper wall of the strip-shaped through groove 16; when the other foot steps on the pedal 3, the piston shaft 5 cannot be contracted because the gas in the cylinder 4 cannot be discharged, and the height after stretching can be maintained. When the elevator reaches the maximum height, the stepping action can not lead the elevator to continue rising, and corresponding work is carried out at the moment, and the elevator can directly walk in the process, thereby being very convenient; after using, open switch valve 10, put down the gas in the cylinder body 4, the companion ladder can at the uniform velocity descend to packing up completely, and gyro wheel 17 is moving back towards the lower wall that the bar led to groove 16, and whole process stability and security homoenergetic obtain fine guarantee.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. Portable passive pedal companion ladder, its characterized in that: comprises a counterweight base (1), a scissor type connecting rod (2), a pedal (3) and a lifting mechanism, the pedal (3) is arranged right above the counterweight base (1) through a scissor type connecting rod (2), the lifting mechanism comprises a cylinder body (4), a piston shaft (5), a one-way piston (6) and an air pipe (7), the top end of the cylinder body (4) is provided with a piston hole (8) and a vent hole (9), the piston shaft (5) extends into the cylinder body through the piston hole (8), the one-way piston (6) is arranged at the bottom end of the piston shaft (5), the one-way piston (6) is in matched contact with the inner wall of the cylinder body (4) and limits air flow to only pass through the one-way piston (6) from top to bottom, one end of the air pipe (7) is communicated with the lower end in the cylinder body (4), the other end is provided with a switch valve (10), the bottom end of the cylinder body (4) and the top end of the piston shaft (5) are respectively movably connected with adjacent rod bodies or crossed rod bodies in the scissor-type connecting rod (2).

2. The portable passive foot-operated elevator of claim 1, wherein: one-way piston (6) comprise connecting axle (601), columnar piston body (602) and a plurality of one-way valve block (603), columnar piston body (602) is connected in the bottom of piston axle (5) through connecting axle (601), opens valve opening (604) that have a plurality of lining up from top to bottom on columnar piston body (602), establish in columnar piston body (602) bottom one-to-one with valve opening (604) position for open or close valve opening (604).

3. The portable passive foot-operated elevator of claim 1, wherein: the switch valve (10) is arranged on the side edge of the pedal (3).

4. The portable passive foot-operated elevator of claim 1, wherein: and the bottom of the counterweight base (1) is provided with an anti-skid pad (11).

5. The portable passive foot-operated elevator of claim 1, wherein: the lifting mechanism has one or two lifting mechanisms, and when the lifting mechanism has two lifting mechanisms, the air pipes (7) in the two lifting mechanisms are connected to the same switch valve (10) after being converged.

6. The portable passive foot-operated elevator of claim 1, wherein: one side of counter weight base (1) upper surface is equipped with a pair of spacing track (12), and the opposite side is equipped with a pair of bearing frame (13), one side of cutting fork connecting rod (2) bottom is through first pivot (14) swing joint in spacing track (12), and the opposite side is through second pivot (15) swing joint in bearing frame (13).

7. The portable passive foot-operated elevator of claim 6, wherein: the limiting rail (12) is provided with a strip-shaped through groove (16), the two ends of the first rotating shaft (14) are provided with idler wheels (17), the idler wheels (17) are clamped in the strip-shaped through groove (16), and the diameter of each idler wheel (17) is slightly smaller than the vertical width of the strip-shaped through groove (16).

8. The portable passive foot-operated elevator of claim 1, wherein: the upper surface of the pedal (3) is provided with a foot fixing device.

9. The portable passive foot-operated elevator according to claim 8, characterized in that: the foot fixing device is composed of a plurality of fastening tapes (18) for fixing the instep and a baffle (19) for fixing the heel, the front side surface of the baffle (19) is in a concave arc shape, and a sponge layer (20) is arranged on the front side surface.

10. The portable passive foot-operated elevator of claim 1, wherein: the length and width of the counterweight base (1) and the pedal (3) are both 36cm multiplied by 18cm, and the maximum height of the scissor type connecting rod (2) after stretching is 1.5 m.