阅读说明：本技术 一种高跷式登高器的单向上升机构 (Unidirectional ascending mechanism of stilt type ascending device ) 是由 徐桂凤 于 2019-09-04 设计创作，主要内容包括：本发明涉及登高机械装置领域,尤其是一种高跷式登高器的单向上升机构。该高跷式登高器的单向上升机构包括：设有螺旋形导向部的转动杆、单向轮、套设在该转动杆上仅能直线移动的滑套,该滑套和所述第一连接点铰接,该转动杆和第二连接点转动连接轴向固定,该滑套设有用于和所述导向部配合驱动所述转动杆旋转的配合部,所述单向轮包括与固定在该转动杆外的内套和外盘,在该外盘被限制旋转时该内套仅可随所述第一连接点和第二连接点相互靠近而旋转,实现登高器的上升。(The invention relates to the field of ascending mechanical devices, in particular to a one-way ascending mechanism of a stilt type ascending device. This one-way rising mechanism of stilt formula ware of ascending a height includes: dwang, one-way wheel, cover that are equipped with spiral guide part are established and are only can rectilinear movement's sliding sleeve on this dwang, this sliding sleeve with first tie point is articulated, and this dwang and second tie point rotate to be connected axial fixity, this sliding sleeve be equipped with be used for with guide part cooperation drive the rotatory cooperation portion of dwang, the one-way wheel include with fix endotheca and outer dish outside this dwang, this endotheca can only be followed when this outer dish is restricted rotation first tie point and second tie point are close to each other and rotate, realize ascending of ware of ascending a height.)

1. A one-way elevating mechanism of a stilt-type ascender, the stilt-type ascender comprising: a pair of lifting devices (Z, Y) which comprise a lifting mechanism and a one-way lifting mechanism; it is characterized in that the unidirectional ascending mechanism comprises: dwang, one-way wheel, the cover that is equipped with spiral guide part are established and are only can rectilinear movement's sliding sleeve on this dwang, this sliding sleeve with first tie point is articulated, and this dwang and second tie point rotate to be connected axial fixity, this sliding sleeve be equipped with be used for with guide part cooperation drive the rotatory cooperation portion of dwang, the one-way wheel include with fix endotheca and outer dish outside this dwang, this endotheca can only be followed when this outer dish is restricted rotation first tie point and second tie point are close to each other and rotate.

2. A one-way elevating mechanism of a stilt-type ladder according to claim 1, wherein the outer plate is provided with a clutch for switching a rotation permitting state and a rotation restricting state of the outer plate.

3. A one-way elevating mechanism of a stilt-type ascender as set forth in claim 1, wherein the first connection point and the second connection point are respectively located at upper, middle and lower ends of the elevating mechanism.

4. A one-way elevating mechanism of a stilt-type ascender as set forth in claim 1, wherein the elevating mechanism comprises a pair of scissor assemblies disposed in parallel left and right in a multi-layered X-shape.

5. A one-way elevating mechanism of a stilt-type ascender as set forth in claim 1, wherein the scissor assemblies disposed in parallel in the left and right direction are hinged by a plurality of hinge shafts extending from the scissor assembly on the left side to the scissor assembly on the right side.

6. The one-way elevating mechanism of a stilt-type ladder according to claim 1, wherein the clutch comprises: the friction part is positioned beside the outer disc, the first elastic holding part is used for holding the friction part to press the outer disc, and the hand brake is used for driving the friction part to be separated from the outer disc.

7. A one-way elevating mechanism of a stilt-type ascender as set forth in claim 6, wherein the rotation lever is parallel to the platform, and the friction part is slidably engaged with the platform.

8. A one-way elevating mechanism of a stilt-type ascender according to claim 1, wherein the spiral guide is a spiral groove or protrusion.

9. A one-way elevating mechanism of a stilt-type ascender as claimed in claim 1, wherein the scissor assembly of the elevating mechanism, the platform are made of aluminum alloy or carbon fiber material.

10. A one-way elevating mechanism of a stilt-type ascender according to claim 1, wherein the platform is provided with a fixing band for fixing a foot.

Technical Field

The invention relates to the field of ascending mechanical devices, in particular to a one-way ascending mechanism of a stilt type ascending device.

Background

In life and production, articles are often required to be taken from a high place, such as climbing operations of picking water and electricity for installation, house decoration, cleaning with wall doors and windows, picking fruits, placing goods on a goods shelf and the like, and generally, a ladder and a lifting platform are used as tools to help people to reach the high place.

When the traditional ladder is used, a long ladder or a short ladder is often selected according to the height of an operation point, under the condition of unconditional selection, the long ladder is often used in a short place, the long ladder is heavy, and the overlong ladder rod hinders the operation and safety of a user. The ladder is too short to reach the working face, and the embarrassment of the operation cannot be completed. The height of the robot is changed when the height of the robot is required in the operation process, and people can climb up and down. If the working position needs to be changed from front to back, left to right, the user can climb down the ladder, and the shoulder levers can work continuously only by lifting the ladder and then climbing up. The physical strength of the user is unnecessarily consumed, the working time is delayed, and the working efficiency is reduced. The ladder and the lifting platform are difficult to move, and the ladder or the lifting platform with the moving function can be moved only by other personnel or external force of a driving mechanism.

The stilts are long rods fixed on two legs of a professional respectively and extend as the legs, the professional can walk by utilizing the stilts, and the stilts can be moved without an external force tool, are lower in requirements on environment compared with the stilts of the ladder, can be used only after long-term training, and can be assisted by other personnel or stand on a high place to form the stilts.

Referring to fig. 1, chinese utility model publication No. CN201981993U discloses a stilt type adjustable ascending and descending ladder, which is composed of two ladder bars that are not connected to each other. The supporting rod of the supporting body is sleeved in the inner diameter of the lifting pipe of the lifting body to form a ladder rod. The support body comprises a support rod and a stabilizer, and the stabilizer consists of a stabilizing plate and a stabilizing foot. The lifting body is composed of a lifting control system, a pedal and a buckle belt, wherein the lifting control system is composed of a lifting pipe, an operating handle, a connecting rod, a spring, a control box, a roller, an elastic sheet and a movable pin.

Referring to fig. 2, chinese patent publication No. CN104627899Z discloses a scissor lift platform, which includes a base 100, a lift mechanism 200, a lift driving mechanism 300, a carrying mechanism 400, and a pressure sensor 500. The base 100 is located at the bottom of the scissor lift, and has 4 mounting holes 101 for facilitating connection to a floor or other equipment. The lifting mechanism 200 is composed of two sets of identical and parallel multi-layer X-shaped lifting components which are correspondingly arranged on two sides of the base 100, the lifting component on the same layer is composed of two connecting rods 201 with middle parts hinged together to enable the lifting component to have a revolute pair, two adjacent layers of lifting components are hinged together through hinge mechanisms arranged at two ends of the connecting rods 201, and one end of one connecting rod 201 in the lifting component on the bottommost layer is hinged with the base 100. The lift drive mechanism 300 is disposed above the base, intermediate the two sets of multi-tiered lift members.

Disclosure of Invention

The invention aims to provide a one-way ascending mechanism of a stilt type ascending device, which can independently complete operation, is easy to master balance and can realize ascending of the ascending device without external power.

In order to achieve the above advantages, the present invention provides a one-way ascending mechanism of a stilt-type ascending device, comprising: a pair of lifting devices (Z, Y) which comprise a lifting mechanism and a one-way lifting mechanism; the unidirectional lifting mechanism comprises: dwang, one-way wheel, the cover that is equipped with spiral guide part are established and are only can rectilinear movement's sliding sleeve on this dwang, this sliding sleeve with first tie point is articulated, and this dwang and second tie point rotate to be connected axial fixity, this sliding sleeve be equipped with be used for with guide part cooperation drive the rotatory cooperation portion of dwang, the one-way wheel include with fix endotheca and outer dish outside this dwang, this endotheca can only be followed when this outer dish is restricted rotation first tie point and second tie point are close to each other and rotate.

Preferably, the outer disk is provided with a clutch for switching between a rotation-allowed state and a rotation-restricted state of the outer disk.

Preferably, the first connection point and the second connection point may be located at upper, middle and lower ends of the lifting mechanism, respectively.

Preferably, the lifting mechanism comprises a pair of left and right parallel arranged multiple layers of scissor fork assemblies arranged in an X shape.

Preferably, the left and right parallel scissors assemblies are hinged through a plurality of hinge shafts extending from the left scissors assembly to the right scissors assembly.

Preferably, the clutch includes: the friction part is positioned beside the outer disc, the first elastic holding part is used for holding the friction part to press the outer disc, and the hand brake is used for driving the friction part to be separated from the outer disc.

Preferably, the rotating rod is parallel to the platform, and the friction part is in sliding fit with the platform. Preferably, the spiral guide part is a spiral groove or a spiral protrusion.

Preferably, the scissor assembly and the platform of the lifting mechanism are made of aluminum alloy or carbon fiber materials.

Preferably, the platform is provided with a fixing strap for fixing the foot.

In the one-way ascending mechanism of the stilt-type ascending device, the left foot and the right foot of a user can alternately and gradually lift the lifting device Z, Y to complete ascending operation and cannot automatically descend after lifting, professional skills are not needed, and the use is safe and reliable.

Drawings

Fig. 1 is a schematic structural diagram of a conventional ascending device.

Fig. 2 is a schematic structural view of a stilt-type riser according to a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a lifting device of the stilt-type riser of fig. 2.

Fig. 4 is a partial structural schematic view of the lifting device of fig. 3.

Fig. 5 is a schematic structural view of the platform of fig. 2.

Fig. 6 is a schematic diagram of the clutch of fig. 2.

Fig. 7 is a schematic view showing the structure of the handle of fig. 2.

Fig. 8 is a schematic structural view of the swing arm of fig. 2.

Fig. 9 is a schematic diagram of a deceleration limiting mechanism of the lifting device shown in fig. 8.

Fig. 10 is a schematic structural view of the height maintaining mechanism of fig. 5.

Fig. 11 is a schematic position diagram of the first connection point and the second connection point of the stilt-type ascending device according to another embodiment of the present invention.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be provided with reference to the accompanying drawings and preferred embodiments for describing specific embodiments, structures, features and effects thereof.

Referring to fig. 1, a unidirectional ascending mechanism of a stilt-type ascending device according to a first embodiment of the present invention includes: a pair of lifting devices Z and Y corresponding to the left foot and the right foot of the user.

Referring to fig. 2-10, the lifting devices Z, Y respectively include a lifting mechanism 1, a one-way lifting mechanism 3, a clutch 4, a deceleration limiting mechanism 5, a height maintaining mechanism 6, and a handle 7.

The scissor assembly 10 and the platform 2 of the lifting mechanism 1 are made of aluminum alloy or carbon fiber materials. The one-way lifting mechanism 3 and the clutch 4 are located between two sets of scissor assemblies 10 in parallel.

Referring to fig. 1 and 3, the lifting mechanism 1 includes a platform 2, and a plurality of layers of scissor assemblies 10 arranged in an X shape, where the scissor assemblies 10 include a pair of connecting rods 101 and 102 hinged at the middle, and the connecting rods 101 and 102 of two adjacent layers of scissor assemblies are hinged to each other. The lifting mechanism has a first connection point and a second connection point, and the distance between the first connection point and the second connection point decreases as the lifting mechanism is lifted.

Specifically, the method comprises the following steps: the lifting mechanism 1 is composed of two sets of identical and mutually parallel multilayer X-shaped scissors assemblies 10 which are correspondingly arranged on two sides of the platform 2, the scissors assemblies 10 on the same layer are composed of two connecting rods 101 and 102, the middle parts of the connecting rods are hinged together to enable the connecting rods to be provided with revolute pairs, the adjacent two layers of scissors assemblies 10 are hinged with each other, one end of one connecting rod 101 in the scissors assembly 10 on the uppermost layer is hinged with the platform 2, and the end part of the other connecting rod 102 is fixed with a sliding rod 103. The left and right parallel arranged scissors assemblies are hinged by a plurality of hinge shafts 104 extending from the left to the right scissors assembly. The first and second connection points are respectively located on both side hinge axes 104.

Referring to fig. 11, in another embodiment of the present invention, the distance between the first connection point and the second connection point increases as the lifting mechanism is lifted. The first connecting point and the second connecting point are adjacent upper and lower layer points, such as: d1 and D2, D2 and D3, D3 and D4, D1 and D8, and the like. It may also be a dot of a spacer, such as: d1 and D3, D1 and D4, D1 and D10, D1 and D12, D1 and D15, D1 and D22, and the like. Alternatively, the first connection point is located on the platform and the second connection point is located in the middle of the link.

Referring to fig. 5, the platform 2 is provided with a sliding groove 20 corresponding to the sliding rod 103, and the sliding rod 103 and the sliding groove 20 cooperate to make the upper end of the connecting rod 101 close to or far from the upper end of the other connecting rod 102, so that the platform 2 is raised or lowered. The platform 2 is fixed with a fixing strap 21 for fixing feet. The platform 2 has a connecting base 23 corresponding to the rotating lever 31 and a swing arm mounting base 25 corresponding to the swing arm.

Referring to fig. 4 and 5, the one-way lifting mechanism 3 includes: a rotating rod 31 provided with a spiral guide part, a sliding sleeve 32 sleeved on the rotating rod and capable of moving only in a straight line, and a one-way wheel 33. The sliding sleeve 32 is hinged with the first connecting point, the rotating rod 31 is connected with the second connecting point in a rotating mode and is axially fixed, and the sliding sleeve 32 is provided with an engaging portion 34 which is used for being matched with the guide portion to drive the rotating rod to rotate. The one-way wheel 33 includes: with the inner sleeve 331 and the outer disk 332 fixed outside the rotating lever 31,

the inner housing 331 is only rotatable as the first and second connection points approach each other while the outer disc 332 is restricted from rotating. The spiral guide part is a spiral groove or a spiral protrusion.

Referring to fig. 6 and 7, the clutch 4 is used to switch the rotation-allowed state and the rotation-restricted state of the outer disk 332. The clutch 4 includes: the brake comprises a friction part 41 positioned beside an outer disc 332, a fixing block 42 respectively positioned at the front end and the rear end of the friction part 41 and used for fixing the friction part 41, a first elastic holding part 43, a hand brake 44, a first brake cable 45 and a first brake cable sleeve 46 sleeved outside the first brake cable 45. The friction portion 41 has a first guide rod 411 and a stopper 412 fitted around the guide rod. The fixed block 42 is fixedly connected with the platform 2. The fixing block 42 is provided with a guide hole 421. The friction portion 41 is slidable in the axial direction of the guide hole 421. The first elastic holding portion 43 is a spring fitted around the guide rod 411. The spring is located between the stop portion 412 and the rear end fixing block 42. The first elastic holding portion 43 is used for holding the pressure between the friction portion 41 and the outer disc 332 to limit the rotation of the rotating rod 31, and the hand brake 44 is used for pulling the first guide rod 411 through the first brake cable 45 to change the pressure between the friction portion 41 and the outer disc 332 to adjust the friction force between the friction portion 41 and the outer disc 332 to control the descending speed of the platform 2.

In other embodiments of the present invention, the friction parts 41 are symmetrically disposed at both sides of the platform 2 about the central axis of the outer disc 332. The first brake cable 45 is "Y" shaped, and the ends of the branches are respectively connected to the first guide rods 411 at both sides.

The hand brake 44 is identical in structure and principle to the hand brake of the bicycle. The hand brake 44 includes a hand brake base 441 fixed to the handle 7 and a hand brake lever 442, the first brake cable sleeve 46 is positioned between the hand brake base 441 and the platform 2, the middle portion of the hand brake lever 442 is hinged to the hand brake base 441, and the end portion of the hand brake lever 442 is connected to the first brake cable 45.

Referring to fig. 4, 5, 8 and 9, the deceleration limiting mechanism 5 includes an annular groove 51 formed on the outer disk 332, a swing arm 52 hinged to the platform 2, and a second elastic holding portion 53. The inner side wall 511 of the annular groove 51 has an extended projection 511a facing away from the rotating lever 31, and the outer side wall 512 of the annular groove 51 has a locking notch 512 b; the swing arm 52 is provided with an end post 521 accommodated in the annular groove 51, and the end post 521 is attached to the inner side wall 511 of the annular groove 51; the protrusion 511a is used to press the end post 521 into the locking notch 512b when the platform 2 is lowered too fast, so as to limit the rotation of the outer disk 332. The second elastic holding portion 53 is a torsion spring, and the second elastic holding portion 53 serves to hold the end post 521 in contact with the inner side wall 511 of the annular groove 51. The locking notch 512b is opened in the opposite direction to the rotation of the outer disc 332 during the lowering of the platform 2. In other embodiments, the second resilient retaining portion may not be provided, and the swing arm may be hinged to the platform at a suitable location, the swing arm using gravity to engage the end post with the inboard side wall 511.

Referring to fig. 7 and 10, the height keeping mechanism includes a brake lever 61, a second brake cable 62, a hand brake 63, a second brake cable sleeve 64 sleeved outside the second brake cable 62, a third elastic portion 65, and a gear 66 sleeved outside the rotating lever 31. The brake lever 61 is located below the gear 66. The brake lever 61 has a hinge portion 611 hinged to the platform 2 at one end and a connecting portion 612 connected to the second brake cable 62 at the other end. The platform 2 is provided with a window 26 allowing the connecting portion 612 to pass through and move upward. The third elastic part 65 serves to maintain the brake lever 61 and the gear 66 in a separated state. The handbrake 63 is used for pressing the gear 66 after the brake lever 61 rotates around the center of the hinge part by pulling the connecting part 612, and limiting the rotation of the gear 66. The preferred surface of the brake lever 61 facing the gear 66 has teeth 613 which engage the gear 66. The third elastic portion 65 is a spring provided between the stage 2 and the upper surface of the connecting portion 612.

The hand brake 63 comprises a hand brake seat 631 fixed to the handle 7, a hand brake lever 632, and a retaining buckle 633 hinged to the handle 7. The hand brake lever 632 has a hook-shaped end portion which can be engaged with the retaining buckle 633, the second brake cable sleeve 64 is positioned between the hand brake base 631 and the platform 2, the middle portion of the hand brake lever 632 is hinged with the hand brake base 631, the end portion of the hand brake lever 632 is connected with the second brake cable 62, and the retaining buckle 633 is used for keeping the teeth 613 of the brake lever 61 engaged with the gear 66 by maintaining the position of the hand brake lever 632.

The stilt-type ascending device of the present embodiment is used as follows, but not limited thereto:

the left foot and the right foot of the user are respectively connected with the lifting device Z, Y through the fixing belts 21. Solution (II)

In addition to the connection between the retaining buckle 633 of the lifting device Z, Y and the hand brake handle 632, the brake lever 61 is separated from the gear 66 under the action of the third elastic part;

a user firstly lifts the left foot by using the right foot support, and the lifting device Z is lifted under the action of the one-way lifting mechanism 3;

the user adjusts the gravity center, and supports and lifts the right foot by the left foot to enable the lifting device Y to be lifted;

lifting the left foot and the right foot alternately to enable the lifting device Z, Y to rise to a proper height, operating the hand brake handle 632 of the lifting device Z, Y and using the retaining buckle 633 to keep the position of the hand brake handle 632, and locking the height of the lifting device Z, Y; the user can walk like "walking on a stilt" with his legs standing on the lifting devices Z, Y.

When the brake lever descends, a user firstly releases the connection between the retaining buckle 633 of the lifting device Z, Y and the hand brake handle 632, and the brake lever 61 is separated from the gear 66 under the action of the third elastic part; the user operates the hand brake handle to reduce the pressure between the friction part 41 and the outer disc 332 to control the rotating speed of the rotating rod 31 to slowly descend; when the descending speed is too fast, the end column 521 is squeezed into the locking notch 512b by the protrusion 511a to limit the rotation of the outer disc 332, at this time, if the mutual limitation of the locking notch 512b on the end column 521 needs to be removed, the platform needs to be lifted to separate the end column 521 from the locking notch 512b, and the end column 521 is attached to the inner side wall under the action of the second elastic part;

when the lift Z, Y is fully retracted, the user operates the handbrake handle 632 of the lift Z, Y and holds the handbrake handle 632 in position using the retaining buckle 633, locking the height of the lift Z, Y.

In the one-way ascending mechanism of the stilt-type ascending device, the left foot and the right foot of a user can alternately and gradually lift the lifting device Z, Y to complete ascending operation and cannot automatically descend after lifting, professional skills are not needed, and the use is safe and reliable.

The following is the calculation formula of the data related to the invention:

△Hmax＝(n*L*sinαmax-w)

M＝F*r*tanβ

K＝M/(μ*R)

△ H is the rising height difference, N is the number of layers of the scissor assembly, L is the axial distance between the upper and lower rotating shafts of the connecting rod, α is the included angle between the connecting rod and the horizontal plane, w is the width of the connecting rod, N is the platform pressure, F is the transverse force of the lead screw, H is the height difference between the rotating shaft axes, M is the torque of the rotating rod, R is the radius of the rotating rod, β is the helical angle of the rotating rod, K is the pressure of the friction plate, mu is the friction coefficient, R is the axial distance between the friction plate and

l is 0.26m, N is 6, α max is 60 degrees, w is 0.02m, N is 1KN, h is 0.07m

(the total lifting amount of each time is 30cm, the lifting amount of each layer is 5cm plus the width of the connecting rod is 2cm), β is taken to be 30 degrees,

mu is 0.4 (refer to the automobile friction coefficient of 0.35-0.45), and R is 0.06m away from the axis of the rotating rod for the friction plate.

It was found that △ Hmax was 1.23M, F was 1.79KN, M was 1.52N M, and K was 72.42N.

The higher the elevation is, the smaller F is, so the lateral force of the swivelling lever after the platform is lifted for the first time is the greatest, and since the elevation of the platform is relatively low when the platform is lifted for the first time, it is very safe even if it slips.

The friction plate pressure of the one-way elevating mechanism (application numbers: 2018105080138, 2018105088981, 2018105093123, 2018105093142, 201810509327X, 2018207823234, 2018207832708, 2018207833217, 2018207837383) of the pogo-type ascender that the applicant earlier filed requires several hundred newtons.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.