CN109809018B

CN109809018B - Shoulder carrying transportation back frame

Info

Publication number: CN109809018B
Application number: CN201910130058.0A
Authority: CN
Inventors: 姜林含; 王玮; 廖婧钰; 韩文韬; 郭豆豆; 金秀霞; 殷子淳; 周木清; 史腾高; 蔡领; 王雅芬
Original assignee: Zhejiang Gongshang University
Current assignee: Zhejiang Gongshang University
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2020-04-28
Anticipated expiration: 2039-02-21
Also published as: CN109809018A

Abstract

The invention discloses a shoulder carrying transportation back frame which comprises a back frame body, straps arranged on the back frame body, a telescopic supporting rod, a turnover mechanism, a wheel shaft and a ground grabbing wheel, wherein the upper end of the supporting rod is fixed at the lower end of the back frame body, the wheel shaft is rotatably connected to the lower end of the supporting rod through the turnover mechanism, the ground grabbing wheel is rotatably connected to the wheel shaft, a one-way rotating mechanism for enabling the ground grabbing wheel to rotate in one direction is arranged between the ground grabbing wheel and the wheel shaft, and a plurality of claw rods are arranged in the circumferential direction of the ground grabbing wheel. When the novel floor-climbing chair is used, the back of a user can be supported by the support rods and the ground-grasping wheels, the user is effectively prevented from falling backwards due to unstable gravity center during the advancing process, particularly when climbing steps, and the safety of the user is ensured.

Description

Shoulder carrying transportation back frame

Technical Field

The invention relates to a back frame, in particular to a shoulder carrying transportation back frame.

Background

The back frame is a load-bearing tool commonly used by people during manual transportation. Because the back of the body frame is carried on the user when using, and when using the back of the body frame, place the article of certain weight on the back of the body frame, lead to the user when using, whole center leans on the back, and the user is in the transportation, especially when climbing the step, and easy focus is unstable to fall backward carelessly for the user has certain potential safety hazard when using.

Such as: the invention discloses a Chinese patent publication No. CN106892182A, and discloses a folding small back frame, which comprises different connecting rods, a movable connecting rod group, back frame cloth, a fixed rod, back frame straps and a back rope. The folding function of the small back frame is realized by the activity of the movable connecting rod group below the small back frame and the fixed rod at the top of the small back frame. The invention has the following disadvantages: when the invention is used, the whole center of the user is back, and the user is easy to fall backward because of unstable gravity center in the transportation process, especially when climbing steps, so that certain potential safety hazard exists when the user uses the invention.

Disclosure of Invention

The invention aims to solve the problem that the gravity center of a user is easy to be unstable and fall backwards during transportation of the user, particularly during the step climbing process, because the whole gravity center of the user is easy to lean backwards when a traditional back frame is used, and provides a shoulder transportation back frame which can effectively solve the problem.

The purpose of the invention is realized by the following technical scheme: the utility model provides a shoulder transportation back of body frame, includes back of the body frame body, sets up the braces on back of the body frame body, still includes telescopic bracing piece, tilting mechanism, shaft and grabs the land wheel, the lower extreme at back of the body frame body is fixed to the upper end of bracing piece, the shaft rotates the lower extreme of connecting at the bracing piece through tilting mechanism, it rotates to connect at the shaft to grab the land wheel, grab and be provided with the one-way rotary mechanism who makes and grab land wheel unidirectional rotation between land wheel and the shaft, it is provided with a plurality of claw pole to grab the circumferencial direction of land wheel.

When the ground grabbing wheel is used for transportation, articles to be transported are placed on the back frame body, a user carries the back frame on the body through the braces, and meanwhile, the length of the supporting rod is adjusted according to the height of the user, so that the claw rods on the ground grabbing wheel are in contact with the ground. When the user advances, the ground-grasping wheel rolls along the advancing direction. When the user is climbing the step, in case take place the unstable condition of focus, user's health just can incline backward, grabs the claw pole on the land wheel and just can grasp the step, owing to grab land wheel unidirectional rotation, grabs the land wheel and makes fixedly not changeing in the reversal to play the supporting role to user's back, avoided falling down of user, effectively reduced the injured probability of user in the transportation like this. When needs had a rest, the user accessible tilting mechanism will grab the land wheel upset to horizontal position, grab the land wheel like this and just can become a stable base, through the height of adjusting the bracing piece, the user can sit and have a rest on the back of the body frame.

Preferably, the back frame body is L-shaped. The back frame body is arranged to be of the L-shaped structure, so that articles can be placed on the back frame body conveniently, and a user can sit on the back frame body to have a rest conveniently.

Preferably, the claw rod has a rod-like structure, and a tip of the claw rod is bent to one side.

Preferably, the bracing piece includes sleeve and telescopic link, bracing piece telescopic connection is in the sleeve, the lower extreme at back of the body frame is fixed to telescopic upper end, telescopic side is provided with the screw hole, threaded connection has locking screw in the screw hole, the front end of locking screw is contradicted with the side of telescopic link. The length of the supporting rod can be adjusted by the relative movement between the telescopic rod and the sleeve. The bracing piece is after adjusting the completion, through locking screw with telescopic link locking.

Preferably, the turnover mechanism comprises a first hinge joint arranged at the lower end of the telescopic rod and a second hinge joint arranged at one end of the wheel shaft, the first hinge joint and the second hinge joint are rotatably connected through a hinge shaft, a first positioning hole and a second positioning hole are arranged on one side, close to the first hinge joint, of the second hinge joint, an adjusting screw is connected to the first hinge joint in a threaded manner, and the front end of the adjusting screw is clamped into the first positioning hole or the second positioning hole; when the front end of the adjusting screw is clamped into the first positioning hole and the second positioning hole, the wheel shaft is perpendicular to and parallel to the supporting rod respectively.

Preferably, the ground grabbing wheel comprises a cylindrical wheel hub, the wheel hub is sleeved on a wheel shaft, and a plurality of claw rods are arranged in the circumferential direction of the wheel hub; the unidirectional rotating mechanism comprises a follow-up ring arranged between the hub and the wheel shaft, and the follow-up ring is respectively in rotating connection with the hub and the wheel shaft; a limiting groove arranged along the circumferential direction is formed in the inner ring surface of the follow-up ring, and a magnetic block is arranged on the outer ring surface of the wheel shaft and positioned in the limiting groove; the follow-up ring is provided with a sliding groove arranged along the radial direction of the follow-up ring, the sliding groove is correspondingly arranged at one end of the limiting groove, the opening of the sliding groove faces the inner ring surface of the hub, a locking block capable of being attracted by the magnetic block is connected in the sliding groove in a sliding manner, the bottom of the sliding groove is provided with a spring groove, and a spring is arranged between the locking block and the bottom of the spring groove; a plurality of locking grooves corresponding to the locking blocks are formed in the inner ring surface of the hub; the height of the locking block is greater than the depth of the locking groove and less than the depth of the sliding groove. The working principle of the unidirectional rotating mechanism is as follows: when the ground grabbing wheel rotates forwards, the follow-up ring rotates relative to the wheel shaft under the driving of the wheel hub until the magnetic block rotates to one end, opposite to the sliding groove, of the limiting groove and stops, the locking block moves to the bottom of the sliding groove under the attraction of the magnetic block, the wheel hub and the follow-up ring are unlocked, and the ground grabbing wheel can rotate forwards; when grabbing the land wheel reversal, follow-up ring antiport under wheel hub's drive until rotating to the other end of spacing groove, at this moment because the locking block is kept away from to the magnetic path, the locking block card is gone into the locking groove that sets up on wheel hub inner ring face under the effect of spring, locks between wheel hub and the follow-up ring like this for wheel hub can't the antiport. Through the principle, the ground grabbing wheel can rotate in a single direction.

Preferably, first balls are provided between an outer annular surface of the follower ring and an inner annular surface of the hub, and second balls are provided between the inner annular surface of the follower ring and an outer annular surface of the wheel shaft. The first ball is arranged between the outer ring surface of the follow-up ring and the inner ring surface of the hub, so that the abrasion between the follow-up ring and the hub is effectively reduced; and the second ball is arranged between the inner ring surface of the follow-up ring and the outer ring surface of the wheel shaft, so that the abrasion between the follow-up ring and the wheel shaft is effectively reduced.

Preferably, the locking block is made of iron. The locking block is made of iron, so that the locking block can be attracted by the magnetic block, and meanwhile, the material is cheap and easy to obtain.

The invention has the beneficial effects that: when the novel floor-climbing chair is used, the back of a user can be supported by the support rods and the ground-grasping wheels, the user is effectively prevented from falling backwards due to unstable gravity center during the advancing process, particularly when climbing steps, and the safety of the user is ensured.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a sectional view of the support bar.

Fig. 4 is an enlarged view of a portion a of fig. 2.

Fig. 5 is a sectional view taken along the line a-a in fig. 4.

Fig. 6 is an enlarged view of a portion b in fig. 5.

Fig. 7 is a sectional view taken in the direction B-B in fig. 5.

Fig. 8 is an enlarged view of the portion d in fig. 7.

In the figure: 1. back of the body frame body, 2, braces, 3, the sleeve, 4, the telescopic link, 5, tilting mechanism, 6, grab ground wheel, 7, flange, 8, locking screw, 9, wheel hub, 10, the claw pole, 11, first articulated joint, 12, the second articulated joint, 13, the articulated shaft, 14, adjusting screw, 15, the shaft, 16, the follower ring, 17, retaining ring, 18, the magnetic path, 19, the spring, 20, the latch segment, 21, the sliding tray, 22, first ball, 23, the second ball, 24, the locking groove, 25, the spacing groove, 26, the spring groove.

Detailed Description

The invention is further described by the following detailed description in conjunction with the accompanying drawings.

Example (b): as shown in fig. 1 to 8, a shoulder transportation back frame comprises a back frame body 1. The back frame body 1 is L-shaped. The back frame body 1 is provided with a back belt 2. The lower end of the back frame body 1 is provided with a telescopic supporting rod. The support rod is arranged along the vertical direction. The support rod comprises a sleeve 3 and a telescopic rod 4. The support rod 4 is telescopically connected in the sleeve 3. The upper end of the sleeve 3 is fixed at the lower end of the back frame body 1 through a connecting flange 7. The side of the sleeve 3 is provided with a threaded hole. The threaded hole is connected with a locking screw 8 in a threaded manner. The front end of the locking screw 8 is abutted against the side surface of the telescopic rod 4. The length of the support rod can be adjusted by the relative movement between the telescopic rod 4 and the sleeve 3. After the support rod is adjusted, the telescopic rod 4 is locked through the locking screw 8.

The lower end of the support rod is provided with a reversible wheel shaft 15. A turnover mechanism is arranged between the wheel shaft 15 and the lower end of the support rod. The turnover mechanism comprises a first articulated joint 11 arranged at the lower end of the telescopic rod 4 and a second articulated joint 12 arranged at one end of a wheel shaft 15. The first joint 11 and the second joint 12 are rotatably connected through a hinge shaft 13. A first positioning hole and a second positioning hole are formed in one side of the second joint 12, which is close to the first joint 11. The interval between the first positioning hole and the second positioning hole is 90 degrees. The first hinge joint is in threaded connection with an adjusting screw 14. The front end of the adjusting screw 14 is clamped into the first positioning hole or the second positioning hole. When the front end of the adjusting screw 14 is clamped into the first positioning hole, the wheel shaft 15 is vertical to the supporting rod; when the front end of the adjusting screw 14 is clamped into the second positioning hole, the wheel shaft 15 is parallel to the support rod.

The wheel shaft 15 is rotatably connected with a ground-grabbing wheel 6. The ground engaging wheel 6 comprises a hub 9. The hub 9 is cylindrical. The hub 9 is sleeved on the axle 15. One end of the wheel shaft 15 penetrates through the end face of the wheel hub 9. The wheel axle 15 is provided with a retaining ring 17 which cooperates with an end face of the hub 9. A plurality of claw bars 10 are arranged in the circumferential direction of the hub 9. In the present embodiment, four claw bars 10 are provided. The claw bar 10 is a rod-shaped structure. The front end of the claw lever 10 is bent to one side. A one-way rotating mechanism is arranged between the hub 9 and the wheel shaft 15. The unidirectional rotation mechanism comprises a follower ring 16 arranged between the hub 9 and the axle 15. The follower ring 16 is rotatably connected to the hub 9 and the wheel shaft 15, respectively. The inner annular surface of the follower ring 16 is provided with a stopper groove 25 arranged in the circumferential direction. The outer annular surface of the wheel shaft 15 is provided with a magnet 18. The magnetic block 18 is located in the spacing groove 25. The follower ring 16 is provided with a slide groove 21. The slide groove 21 is provided radially along the follower ring. The slide groove penetrates the outer circumferential surface of the follower ring 21. The opening of the sliding groove 21 faces the inner annular surface of the hub 9. The sliding groove 21 is correspondingly arranged at one end of the limiting groove 25. A locking block 20 which can be attracted by the magnetic block 18 is slidably connected in the sliding groove 21. The locking piece 20 is matched with the sliding groove 21. In this embodiment, the locking block 20 is made of iron. The locking blocks may also be made of cobalt, nickel or other materials that can be attracted to the magnetic blocks. The bottom of the sliding groove 21 is provided with a spring groove 26. A spring 19 is arranged between the locking block 20 and the bottom of the spring groove 26. The inner ring surface of the hub 9 is provided with a plurality of locking grooves 24 corresponding to the locking blocks 20. The height of the locking piece 20 is greater than the depth of the locking groove 24 and less than the depth of the sliding groove 21. The outer circumferential surface of the follower ring 16 is provided with a plurality of first ball grooves. The first ball groove is a hemispherical groove. The first ball groove is engaged with a rotatable first ball 22. The first balls 22 are in ball contact with the inner annular surface of the hub 9. The inner ring surface of the follower ring 16 is provided with a plurality of second ball grooves. The second ball groove is a hemispherical groove. The second ball groove is embedded with a second rotatable ball 23. The second balls 23 are in rolling contact with the outer circumferential surface of the hub 15. The friction force during rotation between the hub 9 and the follower ring 16 is greater than the friction force during rotation between the follower ring 16 and the wheel shaft 15. The working principle of the unidirectional rotating mechanism is as follows: when the ground grabbing wheel rotates forwards, the follow-up ring rotates relative to the wheel shaft under the driving of the wheel hub until the magnetic block rotates to one end, opposite to the sliding groove, of the limiting groove and stops, the locking block moves to the bottom of the sliding groove under the attraction of the magnetic block, the wheel hub and the follow-up ring are unlocked, and the ground grabbing wheel can rotate forwards; when grabbing the land wheel reversal, follow-up ring antiport under wheel hub's drive until rotating to the other end of spacing groove, at this moment because the locking block is kept away from to the magnetic path, the locking block card is gone into the locking groove that sets up on wheel hub inner ring face under the effect of spring, locks between wheel hub and the follow-up ring like this for wheel hub can't the antiport. Through the principle, the ground grabbing wheel can rotate in a single direction.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a shoulder transportation back of body frame, includes back of body frame body (1), sets up braces (2) on back of body frame body (1), its characterized in that: the ground-grabbing wheel is characterized by further comprising a telescopic supporting rod, a turnover mechanism (5), a wheel shaft (15) and a ground-grabbing wheel (6), wherein the upper end of the supporting rod is fixed at the lower end of the back frame body (1), the wheel shaft (15) is rotatably connected to the lower end of the supporting rod through the turnover mechanism (5), the ground-grabbing wheel (6) is rotatably connected to the wheel shaft (15), a one-way rotating mechanism enabling the ground-grabbing wheel (6) to rotate in one direction is arranged between the ground-grabbing wheel (6) and the wheel shaft (15), and a plurality of claw rods (10) are arranged in the circumferential direction of the ground-grabbing wheel (6); the ground grabbing wheel (6) comprises a cylindrical wheel hub (9), the wheel hub (9) is sleeved on a wheel shaft (15), and a plurality of claw rods (10) are arranged in the circumferential direction of the wheel hub (9); the unidirectional rotating mechanism comprises a follow-up ring (16) arranged between the hub (9) and the wheel shaft (15), and the follow-up ring (16) is respectively in rotating connection with the hub (9) and the wheel shaft (15); a limiting groove (25) arranged along the circumferential direction is formed in the inner annular surface of the follow-up ring (16), a magnetic block (18) is arranged on the outer annular surface of the wheel shaft (15), and the magnetic block (18) is located in the limiting groove (25); the follow-up ring (16) is provided with a sliding groove (21) which is arranged along the radial direction of the follow-up ring (16), the sliding groove (21) is correspondingly arranged at one end of a limiting groove (25), the opening of the sliding groove (21) faces to the inner ring surface of the hub (9), a locking block (20) which can be attracted by a magnetic block (18) is connected in the sliding groove (21) in a sliding manner, the bottom of the sliding groove (21) is provided with a spring groove (26), and a spring (19) is arranged between the locking block (20) and the bottom of the spring groove (26); a plurality of locking grooves (24) corresponding to the locking blocks (20) are formed in the inner ring surface of the hub (9); the height of the locking block (20) is greater than the depth of the locking groove (24) and less than the depth of the sliding groove (21).

2. A piggyback carrier according to claim 1, wherein the carrier body (1) is "L" shaped.

3. A piggyback carrier according to claim 1, wherein the claw bar (10) is a rod-like structure, the front end of the claw bar (10) being bent to one side.

4. The shoulder transportation back frame of claim 1, wherein the support rod comprises a sleeve (3) and a telescopic rod (4), the telescopic rod (4) is telescopically connected in the sleeve (3), the upper end of the sleeve (3) is fixed at the lower end of the back frame body (1), a threaded hole is formed in the side surface of the sleeve (3), a locking screw (8) is connected in the threaded hole in a threaded manner, and the front end of the locking screw (8) is abutted against the side surface of the telescopic rod (4).

5. The shoulder carrying frame according to claim 4, wherein the turning mechanism comprises a first hinge joint (11) arranged at the lower end of the telescopic rod (4) and a second hinge joint (12) arranged at one end of the wheel shaft (15), the first hinge joint (11) and the second hinge joint (12) are rotatably connected through a hinge shaft (13), a first positioning hole and a second positioning hole are arranged on one side of the second hinge joint (12) close to the first hinge joint (11), an adjusting screw (14) is in threaded connection with the first hinge joint, and the front end of the adjusting screw (14) is clamped into the first positioning hole or the second positioning hole; when the front end of the adjusting screw (14) is clamped into the first positioning hole and the second positioning hole, the wheel shaft (15) is perpendicular to and parallel to the supporting rod respectively.

6. A piggyback carrier according to claim 1, wherein first balls (22) are provided between the outer annular surface of the follower ring (16) and the inner annular surface of the hub (9), and second balls (23) are provided between the inner annular surface of the follower ring (16) and the outer annular surface of the axle (15).

7. A piggyback carrier according to claim 1, wherein the locking block (20) is made of iron.