A type of stilt

Abstract

This invention provides stilts that utilize pulley systems and rigid ropes to transmit and converge forces in three-dimensional space, causing the footboards and base to rotate in the same direction. In other words, during use, the balancing forces of the feet and ankles are transmitted synchronously to the base via the cables from the footboards, achieving support and control of body balance. Furthermore, by sliding the footboards on the support pillars, the stilts can reach any height, with a wide adjustable range for rising and falling. In particular, the maximum height of the footboards can be set to about 10 centimeters off the ground. They are not only convenient to use but also easy to put on and take off.

Description

Technical Field

[0001] This invention relates to the field of lifting devices, and more particularly to a type of stilts. Background Technology

[0002] Working at heights is common in industrial production and daily life, encompassing various fields such as decoration construction, equipment maintenance, and agricultural fruit tree pruning and harvesting. These operations require frequent height adjustments and positional changes. Traditional methods rely on scaffolding or A-frame ladders, which are inconvenient to operate and require significant space.

[0003] In existing technologies, dual-pillar adjustable stilts (such as US Patent 12001732) achieve walking balance control through a parallelogram mechanism between the fulcrums when the ankle rotates, and have a limited height adjustment function. However, this structure has significant drawbacks: its height adjustment function can only be switched when not worn, and the adjustment range is limited by the extension ratio of the inner and outer sleeves, with the actual adjustable height usually less than half of the total lift. For example, when the total lift is 1 meter, the minimum adjustable height is still above 50 centimeters, which limits low-altitude work scenarios; at the same time, the wearing / removal process requires the use of an auxiliary high stool, further restricting the flexibility of application scenarios.

[0004] Another type of single-column supported stilt walker (such as patent 202121143997.8) uses an electric lifting structure, but its base lacks a balancing mechanism, forcing users to rely entirely on their body coordination to maintain balance. This design poses significant safety hazards: on the one hand, balance control is difficult, requiring operators to possess extremely high levels of body coordination; on the other hand, during movement, it is highly susceptible to imbalance accidents caused by a shift in the center of gravity, significantly increasing safety risks.

[0005] In summary, stilts present challenges in specific usage environments, including difficulty in maintaining balance and limited adjustment range. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a stilt, which mainly solves the problems of high difficulty in balancing stilts and small adjustment distance.

[0007] The objective of this invention is achieved through the following methods:

[0008] This invention provides stilts, comprising: a support post, foot pedals, and a slider; the foot pedals are slidably connected to the support post via the slider; the slider can slide along a guide groove on the support post and be fixed at a set position; the foot pedals and the slider are rotatably connected; the stilts further comprise: a base plate rotatably connected to the support post; a pulley system including a foot pedal pulley system and a slider pulley; the foot pedal pulley system is fixed to the foot pedal and distributed on both sides of the foot pedal pivot hole, and the slider pulley is fixed to the slider; a rigid rope, one end of which is fixed to the base plate and passes sequentially through the foot pedal pulley system and the slider pulley, and the other end is fixed to the support post; when the foot pedals rotate axially or the base plate rotates axially, the rigid rope transmits power, causing the foot pedals and the base plate to rotate synchronously in the same direction.

[0009] Preferably, the rigid rope includes two sets of rigid ropes, one end of each set of rigid ropes is fixed to the base plate and distributed on both sides of the base plate pivot. The two sets of rigid ropes are also guided and converged to the support column by the foot pedal pulley group and the slider pulley, respectively.

[0010] Preferably, the foot pedal pulley assembly includes two sets of pulleys symmetrically arranged in the foot pedal pivot hole, each set of pulleys including a longitudinal pulley and a horizontal pulley; the two sets of rigid ropes pass through the longitudinal pulley and the horizontal pulley in sequence, and then pass through the slider pulley for longitudinal turning before being fixed to the upper end of the support.

[0011] In some embodiments of the present invention, the stilts further include a drive device for driving the foot pedals and the slider to slide along the guide groove of the support post.

[0012] In some embodiments of the present invention, the driving device includes: a drive screw assembly; the slider is longitudinally provided with a threaded through hole; the screw in the drive screw assembly cooperates with the threaded through hole to drive the slider to slide up and down in the support guide groove.

[0013] Preferably, the drive screw assembly is fixed to the top of the support column.

[0014] In some embodiments of the present invention, the driving device includes: a drive cable assembly; the drive cable assembly includes a drive motor, a worm gear assembly, a first drive wheel, and a second drive wheel; the drive cable assembly is fixed to the foot pedal; the drive motor is connected to the worm gear assembly, and the two worm gears of the worm gear assembly drive the first drive wheel and the second drive wheel respectively; a rigid rope between the foot pedal pulley group and the slider pulley is wound in a figure-eight shape around the first drive wheel and the second drive wheel; the drive cable assembly drives the foot pedal to move on the support column by pulling the rigid rope through the first drive wheel and the second drive wheel.

[0015] In some embodiments of the present invention, the stilts further include:

[0016] A connecting support block is provided, with a base plate pivot at one end and a fixed connection to a support column at the other end; the base plate is rotatably connected to the base plate pivot of the connecting support block; the base plate pivot is also connected to the connecting support block by springs on both sides.

[0017] In some embodiments of the present invention, the slider is further provided with a leg fixing rod.

[0018] In some embodiments of the present invention, the slider includes a slider body and a hollow slider shaft connected to the slider body; the hollow slider shaft has an axial through hole that penetrates the slider body.

[0019] Compared to existing technologies, this invention offers the following advantages: Addressing the shortcomings of existing technologies, this invention provides stilts that utilize pulley systems and rigid ropes to transfer and converge force in three-dimensional space, causing the pedals and base to rotate in the same direction. In other words, during use, the balancing forces of the feet and ankles are synchronously transmitted to the base via cables through the pedals, achieving support and control of body balance. Furthermore, by sliding the pedals on the support pillars, the stilts can reach multiple set positions, offering a wide range of adjustable ascent and descent. In particular, the maximum height of the pedals can be set to approximately 10 centimeters off the ground, making them not only convenient to use but also easy to put on and take off.

[0020] Furthermore, the present invention can be easily adjusted by controlling the rise and fall through a drive device; and by setting a locking mechanism on the slider and the support column, manual adjustment can be achieved, saving costs. Attached Figure Description

[0021] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of a stilt structure provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the second type of stilts provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the third type of stilts provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the partial structure of the second type of stilts provided in an embodiment of the present invention;

[0026] Figure 5 The present invention provides a stilt-like structure in which components such as pulley blocks cooperate with each other in a specific positional relationship.

[0027] Figure 6 The present invention provides a cooperative relationship between traction drives in a stilt walking device.

[0028] Figure 7 This is a schematic diagram of the transmission of the worm gear assembly in this invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Support column; 1-1. Guide groove; 2. Base plate; 3. Foot pedal; 4. Pulley block; 4-1-1. First set of foot pedal pulleys; 4-1-2. Second set of foot pedal pulleys; 4-2. Sliding pulley; 5. Drive screw assembly; 5-1. Screw; 6. Drive rope assembly; 6-1. First drive wheel; 6-2. Second drive wheel; 6-3. Turbine; 6-4. Worm gear; 6-5. Planetary gear; 6-6. Drive motor; 7. Connecting support block; 7-1. Side arm of support block; 8. Sliding block hollow shaft; 8-1. Sliding block roller; 8-2. Spring; 9. Rigid rope; 10. Leg fixing rod; 11. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the invention.

[0031] As mentioned in the background section, "stilts present challenges in balancing and have limited adjustment range in specific usage environments." Specifically, existing stilts primarily rely on supports for balance, which is difficult to achieve. The inventors of this invention aim to reduce the difficulty of balancing by adjusting the force appropriately, thereby enhancing the user experience of stilts. Furthermore, while reducing the difficulty of balancing, they also aim to increase the range of height adjustment for the stilts, thus improving their overall applicability.

[0032] According to one embodiment of the present invention, such as Figure 1 As shown, a stilt is provided, comprising: a support post 1, foot pedals 3, and a slider 8 (shown in other figures); the foot pedals 3 are slidably connected to the support post 1 via the slider 8; the slider 8 can slide along the guide groove of the support post 1 and be fixed in a set position; the foot pedals 3 and the slider 8 are rotatably connected; the stilt also includes: a base plate 2, which is rotatably connected to the support post 1; a pulley system 4, which includes a foot pedal pulley system and a slider pulley 4-2; the foot pedal pulley system is fixed to the foot pedal 3 and distributed on both sides of the foot pedal pivot hole (also called both sides of the slider hollow pivot); the slider pulley 4-2 is fixed to the slider 8; a rigid rope 10, one end of which is fixed to the base plate 2 and passes through the foot pedal pulley system and the slider pulley 4-2 in sequence, and the other end is fixed to the support post 1; when the foot pedal 3 rotates axially or the base plate 2 rotates axially, the rigid rope transmits power to make the foot pedal 3 and the base plate 2 rotate synchronously in the same direction.

[0033] It should be noted that the stilts are fixed to the base plate 2 at one end by a rigid rope and to the upper end of the support column at the other end. When the slider 8 and the foot pedal 3 move up and down together on the support column 1, the foot pedal pulley group and the slider pulley 4-2 roll on the rigid rope 10. When the foot pedal 3 rotates, the power is distributed to both sides of the rotating shaft hole of the foot pedal 3 through the foot pedal pulley group, and the base plate 2 rotates in the same direction through the lever effect. This allows the power on the foot pedal 3 to be transmitted to the base plate 2, which facilitates the balanced operation of the stilts. Furthermore, the foot pedal 3 and the slider 8 slide together on the support column 1, which can improve the travel adjustment range of the stilts. The drive can be to manually pull the slider up and down, and use a locking mechanism to fix the slider when it moves to the set position, for example, the slider slides in the guide groove of the support column 1 to adapt to the height of use, and use locking bolts to fix the slider 8 and the support column 1. The set position mentioned here is determined according to the design of the fixed position and is not limited here; alternatively, an electric drive device can be preferred to drive the slider 8 or the foot pedal 3 so that the slider 8 and the foot pedal 3 move together on the support column 1.

[0034] The implementation process and principle of the present invention are described in detail below.

[0035] Regarding the fit between the rigid rope 10 and the pulley block 4, such as Figure 1 , 4 As shown in Figures 5 and 6, according to one embodiment of the present invention, the rigid rope includes two sets of rigid ropes (a first set of steel wire ropes and a second set of steel wire ropes), which are respectively fixed on the base plate 2 and distributed on both sides of the base plate pivot. The two sets of rigid ropes are also guided and fixed to the support column 1 through the foot pedal pulley group and the slider pulley 4-2, respectively. According to one embodiment of the present invention, the foot pedal pulley group includes two sets of pulleys (a first set of foot pedal pulleys 4-1-1 and a second set of foot pedal pulleys 4-1-2) symmetrically arranged about the foot pedal pivot hole. Each set of pulleys includes a longitudinal pulley and a horizontal pulley. The two sets of rigid ropes pass through the longitudinal pulley and the horizontal pulley in sequence, and then pass through the slider 8 and the slider pulley 4-2 for longitudinal turning before being connected to the upper end of the support column. The slider includes a slider body and a slider hollow pivot 8-1 connected to the slider body. An axial through hole is provided in the slider hollow pivot 8-1 and passes through the slider body. Two sets of rigid ropes pass sequentially through the longitudinal pulley and the horizontal pulley, then through the through hole of the hollow rotating shaft of the slider, and are guided by the slider pulley 4-2 before being connected to the upper part of the support column 1. The rigid rope lead-out surface of the slider pulley 4-2 is higher than the plane of the slider 8 to prevent the rigid rope from contacting and rubbing against the slider 8.

[0036] Specifically, the rigid rope 10 is preferably a steel wire rope; one end of the first set of steel wire ropes is fixed to the steel wire rope connection end of the base plate 2, such as a column (not marked) on the base plate; then it passes over the longitudinal and horizontal pulleys of the first set of foot pedal pulleys 4-1-1. The longitudinal direction is the same as the length direction of the support column 1, and the horizontal direction is parallel to the foot pedal 3. Similarly, the first set of steel wire ropes is wound in the same way as the second set of foot pedal pulleys 4-1-2, and then converges to the hollow rotating shaft 8-1 of the slider 8. The hollow rotating shaft 8-1 of the slider has a through hole along the axial direction, penetrating the slider body; a mounting groove for the slider pulley 4-2 is provided at the through hole on the slider 8 to accommodate the sliding clearance of the slider 8 in the support column 1. The converged first and second sets of steel wire ropes extend upwards around the slider pulley 4-2 and are fixed to the upper end of the support column 1. During the movement of the slider 8 or the rotation of the foot pedal, the first and second sets of steel wire ropes are in a taut state.

[0037] It should be noted that, when selecting a driving device, the stilts of the present invention can be driven by either a lead screw assembly 5 driving a slider 8, or by a cable assembly 6 driving the slider 8 via traction. Details are provided below.

[0038] According to one embodiment of the present invention, such as Figure 1 , 2 The driving device shown in Figures 4 and 5 includes: a drive screw assembly 5; the slider 8 includes a slider body and a hollow slider shaft 8-1 connected to the slider body; the hollow slider shaft 8-1 has an axial through hole that penetrates the slider body. The slider 8 has a threaded through hole (not marked) in the longitudinal direction; the screw 5-1 in the drive screw assembly 5 cooperates with the threaded through hole to drive the slider 8 to slide up and down on the support column 1. The support column 1 has a sliding groove 1-1. Preferably, the drive screw assembly is fixed to the top of the support column; specifically, the motor of the drive screw assembly is located at the top of the support column 1 to facilitate driving the screw. This driving method utilizes the braking principle of the screw, eliminating the need for a separate brake. Preferably, slider rollers 8-2 are fixed on both sides of the slider 8, and the slider rollers 8-2 roll in the sliding groove 1-1, which can effectively reduce the difficulty of adjustment. The support column 1 also has a connecting groove for the hollow slider shaft 8-1 on the slider 8, so that the slider 8 can remain connected to the foot pedal 3 when sliding up and down on the support column 1.

[0039] According to one embodiment of the present invention, such as Figure 3 , 6As shown in Figure 7, the driving device includes: a drive cable assembly 6; the drive cable assembly includes a drive motor 6-6, a worm gear assembly, a first drive wheel 6-1, and a second drive wheel 6-2; the drive cable assembly 6 is fixed to the foot pedal 3; the drive motor 6-6 is connected to the worm gear 6-4 of the worm gear assembly (for better driving, it is preferable that the worm gear 6-4 and the drive motor are decelerated through planetary gears, and the effect of meshing braking is increased), the two worm gears of the worm gear assembly directly drive the first drive wheel 6-1 and the second drive wheel 6-2 through shafts respectively; the rigid rope 10 between the foot pedal pulley group and the slider pulley is wrapped in a figure-eight shape around the first drive wheel 6-1 and the second drive wheel 6-2; the drive cable assembly 6 drives the foot pedal 3 to move on the support column 1 by traction of the rigid rope through the first drive wheel 6-1 and the second drive wheel 6-2.

[0040] Specifically, the first drive wheel 6-1 is a four-grooved wheel, and the second drive wheel 6-2 is a two-grooved wheel. The first drive wheel 6-1 and the second drive wheel 6-2 rotate in opposite directions. The first drive wheel 6-1, the second drive wheel 6-2, and the slider pulley 4-2 are parallel. The first set of steel wire ropes and the second set of steel wire ropes pass through the horizontal rollers of the first set of foot pedal pulleys 4-1-1 and the second set of foot pedal pulleys 4-1-2, respectively. They first pass over the two outer grooves of the four-grooved wheel of the first drive wheel 6-1 from the top, then pass over the two grooves of the second drive wheel 6-2 from the bottom up, and then enter the through hole of the hollow rotating shaft 8-1 of the slider from the two middle grooves at the top of the first drive wheel 6-1, pass over the slider pulley 4-2, and finally are fixed to the upper end of the support column 1. This driving method utilizes the braking principle of a turbine and does not require a separate brake.

[0041] According to one embodiment of the present invention, such as Figure 1 , 2 The stilts shown in Figure 3 also include:

[0042] A connecting support block 7 is provided, with a base plate pivot at one end and a fixed connection to the support column 1 at the other end. The base plate 2 is rotatably connected to the base plate pivot of the connecting support block 7. Springs 9 are also connected to the connecting support block 7 on both sides of the base plate pivot. Specifically, the connecting support block 7 is fixed to the support column 1 with bolts. Support block side arms 7-1 are provided on both sides of the pivot of the connecting support block 7. The two ends of the springs 9 are fixed to the support block side arms 7-1 and the base plate 2 respectively, so that when the support column 1 and the base plate 2 rotate, a restoring force is generated, reducing the difficulty of balancing and facilitating operation.

[0043] Preferred, such as Figure 3The slider 8 is also provided with a leg fixing rod 11 for convenient leg fixation. Various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A type of stilts, comprising: A support column, a foot pedal, and a slider; the foot pedal is slidably connected to the support column via the slider. The slider can slide along the guide groove of the support column and be fixed in a set position; characterized in that the foot pedal is rotatably connected to the slider, and the stilts further include: A base plate, which is rotatably connected to the support column; A pulley system includes a foot pedal pulley system and a slider pulley system; the foot pedal pulley system is fixed to the foot pedal and distributed on both sides of the foot pedal pivot hole, and the slider pulley system is fixed to the slider. A rigid rope, one end of which is fixed to the base plate and passes through the foot pedal pulley group and the slider pulley in sequence, and the other end of which is fixed to the support column; When the foot pedal or the base plate rotates axially, the power is transmitted by a rigid rope, so that the foot pedal and the base plate rotate synchronously in the same direction.

2. The stilts according to claim 1, characterized in that, The rigid rope includes two sets of rigid ropes, one end of each set of rigid ropes is fixed to the base plate and distributed on both sides of the base plate pivot. The two sets of rigid ropes are also guided and converged to the support column by the foot pedal pulley group and the slider pulley, respectively.

3. The stilts according to claim 2, characterized in that, The foot pedal pulley assembly includes two sets of pulleys symmetrically arranged on both sides of the foot pedal pivot hole. Each set of pulleys includes a longitudinal pulley and a horizontal pulley. The two sets of rigid ropes pass through the longitudinal pulley and the horizontal pulley in sequence, and then pass through the slider pulley for longitudinal turning before being fixed to the upper end of the support column.

4. The stilts according to claim 1, characterized in that, The stilts also include a drive device for driving the foot pedals and the slider to slide along the support guide groove.

5. The stilts according to claim 4, characterized in that, The drive device includes: a drive screw assembly; The slider is provided with a threaded through hole in the longitudinal direction; The screw in the drive screw assembly engages with the threaded through hole to drive the slider to slide up and down within the guide groove of the support column.

6. The stilts according to claim 5, characterized in that, The drive screw assembly is fixed to the top of the support column.

7. The stilts according to claim 4, characterized in that, The drive device includes: a drive cable assembly; The drive cable assembly includes a drive motor, a worm gear assembly, a first drive wheel, and a second drive wheel; The drive cable assembly is fixed to the foot pedal; the drive motor is connected to the worm gear assembly, and the two worm gears of the worm gear assembly drive the first drive wheel and the second drive wheel respectively; The rigid rope between the foot pedal pulley assembly and the slider pulley is wound in a figure-eight pattern around the first drive wheel and the second drive wheel; The drive cable assembly drives the foot pedal to move on the support column by traction of a rigid cable through the first drive wheel and the second drive wheel.

8. The stilts according to any one of claims 1-7, characterized in that, The stilts also include: A connecting support block is provided at one end with a base plate pivot, and at the other end is fixedly connected to a support column; The base plate is rotatably connected to the base plate pivot of the connecting support block; the two sides of the base plate pivot are also connected to the connecting support block by springs.

9. The stilts according to any one of claims 1-7, characterized in that, The slider is also equipped with a leg fixing rod.

10. The stilts according to any one of claims 1-7, characterized in that, The slider includes a slider body and a hollow slider shaft connected to the slider body; the hollow slider shaft has an axial through hole that penetrates the slider body.

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