CN110934722B

CN110934722B - Rope-pulling type unpowered power-assisted walking device

Info

Publication number: CN110934722B
Application number: CN201911236036.9A
Authority: CN
Inventors: 张永康; 尚同同; 陆煜彬; 肖科旭; 李津任
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2021-09-03
Anticipated expiration: 2039-12-05
Also published as: CN110934722A

Abstract

The invention provides a rope-pulling type unpowered power-assisted walking device which comprises a mounting frame and a steel wire rope, wherein a waistband is mounted on the front side of the mounting frame, thigh supporting plates are mounted on the left side and the right side of the mounting frame, the upper ends of the thigh supporting plates are rotatably connected with the mounting frame, thigh fixing belts are arranged on the inner sides of the lower ends of the thigh supporting plates, a cam assembly is mounted on the inner sides of the upper ends of the thigh supporting plates and comprises a cam A, a cam B and a cam C, a steel wire rope adjusting assembly is arranged above the cam assembly, pulley fixing pieces A are arranged at two ends of the rear side of the mounting frame, two pulley fixing pieces B are arranged between the two pulley fixing pieces A, a pulley fixing piece C is arranged on the rear side of the mounting frame, a tension spring fixing piece is arranged below the pulley fixing piece C, a crank arm A is connected with the tension spring fixing piece through a weak tension spring, and a tension spring crank arm B is connected with the tension spring fixing piece through a strong tension spring. The advantages are that: the problem of old people's body long time walking difficult is solved, spring is in initial state, simple structure, with low costs, advantages such as safe and reliable when both legs are in vertical direction.

Description

Rope-pulling type unpowered power-assisted walking device

Technical Field

The invention relates to the technical field of walking power assisting devices, in particular to a rope-pulling type unpowered power-assisted walking device.

Background

In 2015, the population over 60 years old in China exceeds 2.22 hundred million people, and in 2025, the population over 60 years old is expected to break through 3 hundred million people, and China also becomes an ultra-old country. With the increase of age, the muscle strength of the human body is increasingly weakened, the bone density is gradually reduced, the joint abrasion is serious, the ligament toughness and the elasticity are reduced, and the walking ability of the old is limited, so that the daily life of the old is influenced.

In order to solve the above problems, the conventional power-assisted walking device is mainly divided into a power-assisted walking device and an unpowered walking device. At present, most of the power-assisted walking devices with power have complex structures, high maintenance cost and high price, so the devices are mostly used in the military field and are less applied in the civil field. Most unpowered power-assisted walking devices adopt springs for energy storage and energy release (patent number: CN 201710494336.1), but most of the energy storage is the gravity work of human legs, the efficiency is low, and when a wearer stands with two legs in the vertical direction, the two legs have forward force due to the energy storage of the springs, so that the wearer stands difficultly, and the problem that the old is difficult to walk for a long time is not fundamentally solved. In view of the above problems, the invention provides the unpowered power-assisted walking device which utilizes the downward movement of the gravity center of the human body to do work to drive the thighs to rotate forwards during walking, and has simple structure and low cost.

Disclosure of Invention

In order to solve the problems, the invention discloses a rope-pulling type unpowered power-assisted walking device, which solves the problem that old people are difficult to walk for a long time, has the advantages of simple structure, low cost, safety, reliability and the like, and is suitable for being worn by the old people, and springs are in an initial state when the two legs are in the vertical direction.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a rope draws unpowered helping hand running gear which characterized in that: the adjustable thigh belt comprises a mounting frame and a steel wire rope, wherein a waistband is installed on the front side of the mounting frame in a matched mode, thigh supporting plates are installed on the left side and the right side in a matched mode, the upper end of each thigh supporting plate is rotatably connected with the mounting frame, a thigh fixing belt is installed on the inner side of the lower end of each thigh supporting plate in a matched mode, a cam assembly is installed on the inner side of the upper end of each thigh supporting plate and comprises a cam A, a cam B and a cam C which are sequentially arranged from inside to outside, a steel wire rope adjusting assembly is arranged above the cam assembly and comprises a pulley adjusting fixing member and a guide rail which are arranged from top to bottom, the pulley adjusting fixing member is fixedly connected with the mounting frame, a rectangular insertion groove is formed in the top surface of the pulley adjusting fixing member downwards, first side clamping teeth are symmetrically arranged on the front side and the rear side of the rectangular insertion groove, a pulley adjusting pressing block matched with the pulley adjusting pressing block is inserted in the rectangular insertion groove in a matched mode, and second side clamping teeth matched with the first side clamping teeth are symmetrically arranged on the front side and rear side of the pulley adjusting pressing block, the inner end of the guide rail is fixedly connected with the mounting frame, the guide rail is uniformly arranged from front to back, adjustable pulley fixing pieces capable of sliding left and right along the guide rail are arranged below the guide rail in a matching manner, adjustable pulleys are arranged on the adjustable pulley fixing pieces in a matching manner, pulley fixing pieces A are symmetrically arranged at the left end and the right end of the rear side of the mounting frame, first pulleys are arranged on the pulley fixing pieces A in a matching manner, two pulley fixing pieces B symmetrically arranged left and right are arranged between the two pulley fixing pieces A, second pulleys are arranged on the pulley fixing pieces B, a tensioning wheel crank arm A and a tensioning wheel crank arm B are respectively and rotatably connected onto the left pulley fixing piece B and the right pulley fixing piece B, one ends of the tensioning wheel crank arm A and the tensioning wheel crank arm B, which are far away from each other, are respectively and rotatably connected with the left pulley fixing piece B and the right pulley fixing piece B, and one ends of the tensioning wheel crank arm A and the tensioning wheel crank arm B, which are close to each other, are provided with third pulleys in a matching manner, the middle position department of mounting bracket rear side is equipped with pulley mounting C, pulley mounting C goes up the cooperation and installs the fourth pulley, and pulley mounting C's below is equipped with the extension spring mounting, take-up pulley connecting lever A's middle part is connected with the extension spring mounting through weak extension spring, take-up pulley connecting lever B's middle part is connected with the extension spring mounting through strong extension spring, wire rope's one end is connected with the cam subassembly cooperation that is located the mounting bracket left, and the other end loops through and is located left adjustable pulley, is located left first pulley, is located left second pulley, is located left third pulley, is located the fourth pulley in middle part, is located the third pulley on right side, is located the second pulley on right side, is located the first pulley on right side and is located behind the adjustable pulley on right side and is connected with.

Furthermore, the top of the pulley adjusting and fixing part is provided with a fixed limiting component, the fixed limiting component comprises a vertically arranged shaft, the shaft is of a columnar structure, the side surface of the shaft is composed of two symmetrically arranged arc surfaces and two symmetrically arranged planes, the arc surfaces and the planes are arranged in a staggered manner, the lower end of the shaft is sleeved with a rotating piece, the rotating piece comprises a rotating ring which is rotatably sleeved outside the lower end of the shaft, the rotating ring is of a circular ring structure, the top surface of the rotating ring is provided with an upper annular latch, the side edge of the rotating ring is connected with a rotating plate, the shaft is sleeved with a fixed clamping piece which can slide up and down along the shaft, the middle part of the fixed clamping piece is provided with a through hole matched with the shaft, the bottom of the fixed clamping piece is provided with a lower annular latch matched with the upper annular latch, the two arc surfaces of the shaft are provided with external threads, and the shaft is in threaded connection with a fixing nut matched with the external threads, and the fixing nut is arranged above the fixing clamping piece.

Furthermore, the end of the steel wire rope is connected with the cam component through a steel wire rope buckle, and the end of the steel wire rope is fixed with the steel wire rope buckle through a steel wire rope fixing nut.

Furthermore, a rear protective cover is installed on the rear side of the mounting frame in a matched mode.

Furthermore, a protective cover is arranged on the outer side of the upper end of the thigh supporting plate in a matching manner.

Compared with the prior art, the invention has the beneficial effects that:

1. when a wearer walks, the left (right) leg moves downwards due to the gravity center of the human body so as to rotate backwards, and the force is simultaneously transmitted to the right (left) leg through the steel wire rope while the left (right) leg rotates backwards, so that the right (left) leg is driven to rotate forwards, the efficiency is higher, and the life burden of the old is relieved;

2. the wearer stands with two legs in the vertical direction, and the two legs have no extra burden, so that the garment is more suitable for the old to wear;

3. the weak tension spring and the pulley are arranged, so that the steel wire rope can be wound in a preset track, and the safe operation of the device is guaranteed;

4. the steel wire rope winding track is adjustable, is suitable for self conditions of different wearers, and has good universality;

5. the strong tension spring is arranged, so that a wearer can perform self-adaptive adjustment on the step pitch within a certain range;

6. the device has the advantages of simple structure, extremely low cost, safety, reliability and strong popularization value.

Drawings

Fig. 1 is a schematic structural view of an automatic recovery device for cans based on cam compression according to the present invention.

Fig. 2 is a schematic structural view of fig. 1 with the rear protective cover and the protective cover removed.

Fig. 3 is a partially enlarged view of a in fig. 2.

Fig. 4 is a schematic view of the structure of the rear portion of the mounting bracket.

Fig. 5 is a schematic view of a wireline adjustment assembly.

Fig. 6 is a schematic structural view of fig. 5 with the guide rail, the rotating member and the pulley adjusting fixing member removed.

Fig. 7 is an exploded view of the fixed stop assembly.

Fig. 8 is a schematic structural view of the connection between the wire rope and the cam assembly.

Fig. 9 is a partial enlarged view of B in fig. 8.

List of reference numerals:

1-a waistband, 11-a mounting bracket, 12-a rear protective cover, 13-a protective cover, 2-a cam assembly, 21-a cam A, 22-a cam B, 23-a cam C, 3-a thigh plate, 31-a thigh securing strap, 4-a wire rope, 41-a wire rope buckle, 42-a wire rope securing nut, 5-a guide rail, 51-a rotating member, 52-a pulley adjusting press block, 53-a pulley adjusting securing member, 54-an axis, 55-a securing catch, 56-a securing nut, 6-an adjustable pulley securing member, 61-an adjustable pulley, 62-a pulley securing member A, 63-a first pulley, 7-a pulley securing member B, 71-a second pulley, 72-a tension pulley crank arm A, 73-a weak tension spring, 74-tensioning wheel crank arm B, 75-strong tension spring, 76-tension spring fixing piece, 77-third pulley, 8-pulley fixing piece C, 81-fourth pulley.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in the figure, the rope-pulling type unpowered power-assisted walking device comprises a mounting rack 11 and a steel wire rope 4, wherein a waistband 1 is installed on the front side of the mounting rack 11 in a matched mode, thigh supporting plates 3 are installed on the left side and the right side in a matched mode, the upper end of each thigh supporting plate 3 is rotatably connected with the mounting rack 11, a thigh fixing band 31 is installed on the inner side of the lower end in a matched mode, a cam assembly 2 is installed on the inner side of the upper end of each thigh supporting plate 3, the cam assembly 2 comprises a cam A21, a cam B22 and a cam C23 which are sequentially arranged from inside to outside, a steel wire rope adjusting assembly is arranged above the cam assembly 2 and comprises a pulley adjusting fixing piece 53 and a guide rail 5 which are arranged from top to bottom, the pulley adjusting fixing piece 53 is fixedly connected with the mounting rack 11, a rectangular insertion groove is downwards formed in the top surface of the rectangular insertion groove, first side clamping teeth are symmetrically arranged on the front side and the back side of the rectangular insertion groove, and a pulley adjusting pressing piece 52 matched with the rectangular insertion groove is inserted in a matched and inserted manner, second side latch teeth matched with the first side latch teeth are symmetrically arranged on the front side and the rear side of the pulley adjusting press block 52, the inner end of the guide rail 5 is fixedly connected with the mounting frame 11, the guide rail 5 is uniformly arranged from front to back, adjustable pulley fixing pieces 6 capable of sliding left and right along the guide rail 5 are arranged below the guide rail 5 in a matching manner, adjustable pulleys 61 are arranged on the adjustable pulley fixing pieces 6 in a matching manner, pulley fixing pieces A62 are symmetrically arranged on the left end and the right end of the rear side of the mounting frame 11, a first pulley 63 is arranged on the pulley fixing piece A62 in a matching manner, two pulley fixing pieces B7 symmetrically arranged left and right are further arranged between the two pulley fixing pieces A62, a second pulley 71 is arranged on the pulley fixing piece B7, a tension pulley connecting lever A72 and a tension pulley connecting lever B74 are respectively and rotatably connected on the left and right pulley fixing pieces B7, one ends, far away from each other, of the tension pulley connecting lever A72 and the tension lever B74 are respectively and rotatably connected with the left and right pulley B7, a third pulley 77 is installed at one end of the tensioning wheel crank arm a72 and the tensioning wheel crank arm B74 close to each other in a matching manner, a pulley fixing piece C8 is arranged at the middle position of the rear side of the installation frame 11, a fourth pulley 81 is installed on the pulley fixing piece C8 in a matching manner, a tension spring fixing piece 76 is arranged below the pulley fixing piece C8, the middle part of the tensioning wheel crank arm a72 is connected with the tension spring fixing piece 76 through a weak tension spring 73, the middle part of the tensioning wheel crank arm B74 is connected with the tension spring fixing piece 76 through a strong tension spring 75, one end of the steel wire rope 4 is connected with the cam assembly 2 on the left side of the installation frame 11 in a matching manner, the other end of the steel wire rope passes through the adjustable pulley 61 on the left side, the first pulley 63 on the left side, the second pulley 71 on the left side, the third pulley 77 on the left side, the fourth pulley 81 on the middle part, the third pulley 77 on the right side, the second pulley 71 on the right side, the first pulley 63 on the right side and the adjustable pulley 61 on the right side, and the cam assembly 2 on the installation frame 11 on the right side And (4) matching and connecting.

In this embodiment, the top of the pulley adjusting fixing member 53 is provided with a fixing and limiting assembly, the fixing and limiting assembly comprises a shaft 54 vertically arranged, the shaft 54 is of a cylindrical structure, the side surface of the rotary shaft consists of two symmetrically arranged arc surfaces and two symmetrically arranged planes, the arc surfaces and the planes are arranged in a staggered manner, the lower end of the shaft 54 is sleeved with a rotating piece 51, the rotating piece 51 comprises a rotary ring which is rotatably sleeved outside the lower end of the shaft 54, the rotary ring is of a circular ring structure, the top surface of the fixing device is provided with an upper annular latch, the side edge of the fixing device is connected with a rotating plate, the shaft 54 is sleeved with a fixing clamp 55 capable of sliding up and down, the middle of the fixing clamp 55 is provided with a through hole matched with the shaft 54, the bottom of the fixing clamp is provided with a lower annular latch matched with the upper annular latch, external threads are arranged on two arc surfaces of the shaft 54, the shaft 54 is connected with a fixing nut 56 matched with the external threads in a threaded manner, and the fixing nut 56 is arranged above the fixing clamp 55.

In this embodiment, the end of the wire rope 4 is connected to the cam module 2 by a wire rope clip 41, and the end of the wire rope 4 is fixed to the wire rope clip 41 by a wire rope fixing nut 42.

In this embodiment, a rear protective cover 12 is fittingly mounted to a rear side of the mounting bracket 11.

In this embodiment, a protective cover 13 is fitted to the outer side of the upper end of the thigh support plate 3.

The use and principle of the invention are as follows:

1. wearing the power-assisted walking device, and fixing the thigh fixing belt 31 and the thigh;

2. the position of the pulley adjusting pressing block 52 on the pulley adjusting fixing piece 53 is changed, the pulley adjusting pressing block 52 is pressed down to change the position of the adjustable pulley fixing piece 6, so that the winding track of the steel wire rope 4 is guided to change, the steel wire rope is wound on different cams to adapt to habits of different wearers, and the fixing clamping groove 55 is moved downwards by rotating the fixing nut 56 to fix the rotating piece 51 and prevent sliding;

3. a strong tension spring 75 and a weak tension spring 73 are arranged at the rear part of the device, when the legs of a person are in the vertical direction, the weak tension spring 73 (with the elastic coefficient K weak) is in a stretching state, and the strong tension spring 75 is almost in an original state (with the elastic coefficient K strong and the K strength being more than or equal to K weak);

4. when a person walks and the right (left) leg rotates forward at a speed of a °/s, the speed V1 (V1 =2R a/360) at which the cam assembly 2 on the right (left) side of the apparatus pays out the wire rope 4 (the radius of the cam base circle is R and the maximum radius of the cam profile is R) while the center of gravity of the human body moves downward, the speed at which the left (right) leg rotates backward relative to the cam base circle is a °/s, the speed V2 (V2 =2R a/360) at which the cam assembly 2 on the left (right) side of the apparatus tensions the wire rope 4, since V1 < V2, the tension of the wire rope 4 increases, the speed at which the right (left) leg rotates forward increases to b °/s (b satisfies 2R b/360= 2R a/360), and if the speed at which the right (left) leg rotates forward is less than b °/s, the tension of the wire rope 4 continues to increase, and the tension spring 75 is tensioned, tension is always kept on the steel wire rope 4, so that the right (left) leg is driven to rotate forwards;

5. when the right (left) foot falls to the ground, the left (right) leg rotates forwards, the strong tension spring 75 is in a stretching state, the left (right) leg can be driven to rotate forwards to the vertical direction, and the tension of the steel wire rope 4 is basically zero;

6. the step 4 and the step 5 are repeated to realize the power-assisted walking;

7. when people walk, the rope releasing speed of one side of the device is higher than the rope pulling speed of the other side of the device, or when people sit down, the weak tension springs 73 simultaneously release ropes on the two sides of the device and pull the tension wheel crank arm A72 downwards to tension the steel wire rope 4.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The utility model provides a rope draws unpowered helping hand running gear which characterized in that: comprises a mounting rack (11) and a steel wire rope (4), a waistband (1) is installed on the front side of the mounting rack (11) in a matching way, thigh supporting plates (3) are installed on the left side and the right side in a matching way, the upper end of each thigh supporting plate (3) is rotatably connected with the mounting rack (11), thigh fixing bands (31) are installed on the inner side of the lower end in a matching way, a cam assembly (2) is installed on the inner side of the upper end of each thigh supporting plate (3), the cam assembly (2) comprises a cam A (21), a cam B (22) and a cam C (23) which are sequentially arranged from inside to outside, a steel wire rope adjusting assembly is arranged above the cam assembly (2), the steel wire rope adjusting assembly comprises a pulley adjusting fixing member (53) and a guide rail (5) which are arranged from top to bottom, the pulley adjusting fixing member (53) is fixedly connected with the mounting rack (11), and the top surface of the pulley adjusting fixing member is downwards provided with a rectangular insertion groove, the front side and the rear side of the rectangular insertion groove are symmetrically provided with first side latch teeth, the rectangular insertion groove is inserted with pulley adjusting press blocks (52) matched with the rectangular insertion groove in a matching manner, the front side and the rear side of each pulley adjusting press block (52) are symmetrically provided with second side latch teeth matched with the first side latch teeth, the inner end of each guide rail (5) is fixedly connected with the mounting frame (11), the guide rails (5) are uniformly arranged from front to back, adjustable pulley fixing pieces (6) capable of sliding left and right along the guide rails (5) are installed below the guide rails (5) in a matching manner, adjustable pulleys (61) are installed on the adjustable pulley fixing pieces (6) in a matching manner, pulley fixing pieces A (62) are symmetrically arranged at the left end and the right end of the rear side of the mounting frame (11), first pulleys (63) are installed on the pulley fixing pieces A (62) in a matching manner, and two pulleys B (7) symmetrically arranged left and right are also arranged between the two pulley fixing pieces A (62), a second pulley (71) is arranged on the pulley fixing piece B (7), a tensioning wheel connecting lever A (72) and a tensioning wheel connecting lever B (74) are respectively connected to the left pulley fixing piece B and the right pulley fixing piece B (7) in a rotating mode, one ends, far away from each other, of the tensioning wheel connecting lever A (72) and the tensioning wheel connecting lever B (74) are respectively connected with the left pulley fixing piece B and the right pulley fixing piece B (7) in a rotating mode, a third pulley (77) is installed at one end, close to each other, of the tensioning wheel connecting lever A (72) and the tensioning wheel connecting lever B (74) in a matching mode, a pulley fixing piece C (8) is arranged at the middle position of the rear side of the mounting rack (11), a fourth pulley (81) is installed on the pulley fixing piece C (8) in a matching mode, a tension spring fixing piece (76) is arranged below the pulley fixing piece C (8), and the middle of the tensioning wheel connecting lever A (72) is connected with the tension spring (76) through a weak tension spring (73), the middle part of take-up pulley connecting lever B (74) is connected with extension spring mounting (76) through strong extension spring (75), the one end of wire rope (4) with be located left cam subassembly (2) cooperation of mounting bracket (11) and be connected, the other end loops through and is located left adjustable pulley (61), be located left first pulley (63), be located left second pulley (71), be located left third pulley (77), be located fourth pulley (81) in the middle part, be located right third pulley (77), be located right second pulley (71), be located right first pulley (63) and be located behind right adjustable pulley (61) with be located cam subassembly (2) cooperation on mounting bracket (11) right side and be connected.

2. The rope pulling type unpowered power-assisted walking device according to claim 1, characterized in that: the top of the pulley adjusting fixing part (53) is provided with a fixed limiting assembly, the fixed limiting assembly comprises a vertically arranged shaft (54), the shaft (54) is of a columnar structure, the side surface of the shaft is composed of two symmetrically arranged arc surfaces and two symmetrically arranged planes, the arc surfaces and the planes are arranged in a staggered manner, the lower end of the shaft (54) is sleeved with a rotating piece (51), the rotating piece (51) comprises a rotatable rotating ring sleeved outside the lower end of the shaft (54), the rotating ring is of a circular ring structure, the top surface of the rotating ring is provided with an upper annular latch, the side edge of the rotating ring is connected with a rotating plate, the shaft (54) is sleeved with a fixed clamping piece (55) capable of sliding up and down, the middle part of the fixed clamping piece (55) is provided with a through hole matched with the shaft (54), the bottom of the fixed clamping piece is provided with a lower annular latch matched with the upper annular latch, and external threads are arranged on the two arc surfaces of the shaft (54), the shaft (54) is in threaded connection with a fixing nut (56) matched with the external thread, and the fixing nut (56) is arranged above the fixing clamping piece (55).

3. The rope pulling type unpowered power-assisted walking device according to claim 1, characterized in that: and a rear protective cover (12) is installed on the rear side of the mounting rack (11) in a matched manner.

4. The rope pulling type unpowered power-assisted walking device according to claim 1, characterized in that: and a protective cover (13) is arranged on the outer side of the upper end of the thigh supporting plate (3) in a matching way.