CN210761139U

CN210761139U - Hand trolley structure

Info

Publication number: CN210761139U
Application number: CN201921750535.5U
Authority: CN
Inventors: 叶志锋
Original assignee: Guangdong Shunde Yitu Sporting Technology Co ltd
Current assignee: Guangdong Shunde Yitu Sporting Technology Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-06-16
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a hand trolley structure, including frame, wheel and actuating mechanism, the wheel pin joint is in the bottom of frame, and actuating mechanism includes hand cranker, first drive wheel, second drive wheel, third drive wheel, first drive belt and second drive belt, and the top rigid coupling of frame has the mounting bracket, and first drive wheel pin joint is in the one end of mounting bracket, and the second drive wheel pin joint is in the other end of mounting bracket, and the third drive wheel is connected with the wheel; one end of the first transmission belt is synchronously wound on the outer surface of the first driving wheel; the other end of the first transmission belt is synchronously wound on the outer surface of the second driving wheel; one end of the second transmission belt is synchronously wound on the outer surface of the second driving wheel, and the other end of the second transmission belt is synchronously wound on the outer surface of the third driving wheel; one end of the hand-operated rod is arranged on the first driving wheel, and the other end of the hand-operated rod is formed into a hand-operated end. The utility model discloses a purpose hand trolley structure, it carries out the transmission through two sets of transmission structures, and the drive is got up comparatively laborsavingly.

Description

Hand trolley structure

Technical Field

The utility model relates to a hand trolley technical field especially relates to a hand trolley structure.

Background

At present, the hand-operated vehicle can be manually operated to rotate wheels, so that the hand-operated vehicle is widely applied to daily life, the wheelchair is used as a convenient auxiliary vehicle for the old, the disabled and the like, and the hand-operated vehicle head is additionally arranged in front of the wheelchair, so that a user with inconvenient legs and feet can manually operate to drive the wheelchair to move forward. However, the existing hand-cranking driving structure for the hand-cranking vehicle is labor-consuming in hand-cranking driving, and a user can be tired due to long-time driving.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a hand trolley structure, which is driven by two sets of transmission structures and saves labor when being driven.

The purpose of the utility model is realized by adopting the following technical scheme:

a hand trolley structure comprises a trolley frame, wheels and a driving mechanism, wherein the wheels are pivoted to the bottom end of the trolley frame, the driving mechanism is used for driving the wheels to rotate, the driving mechanism comprises a hand rocker, a first driving wheel, a second driving wheel, a third driving wheel, a first driving belt and a second driving belt, a mounting frame is fixedly connected to the top end of the trolley frame, the first driving wheel is pivoted to one end of the mounting frame, the second driving wheel is pivoted to the other end of the mounting frame, and the third driving wheel is connected with the wheels; one end of the first transmission belt is synchronously wound on the outer surface of the first driving wheel; the other end of the first transmission belt is synchronously wound on the outer surface of the second driving wheel; one end of the second transmission belt is synchronously wound on the outer surface of the second driving wheel, and the other end of the second transmission belt is synchronously wound on the outer surface of the third driving wheel; one end of the hand-operated rod is installed on the first driving wheel, and the other end of the hand-operated rod is formed into a hand-operated end.

Furthermore, the driving mechanism further comprises a non-return assembly, and the non-return assembly is used for enabling the third driving wheel and the first driving wheel to synchronously rotate when the first driving wheel rotates around the first rotating direction; the non-return assembly is used for limiting the rotation of the third driving wheel when the first driving wheel rotates around the second rotation direction; the first rotational direction is opposite to the second rotational direction.

Further, the backstop assembly comprises a ratchet wheel and a pawl, and the ratchet wheel is synchronously coupled with the third driving wheel; the pawl is connected with the wheel and is used for being embedded into a tooth groove of the ratchet wheel when the first driving wheel rotates around the second rotating direction so as to prevent the ratchet wheel from rotating.

Further, the first driving wheel, the second driving wheel and the third driving wheel are all gears, and the first transmission belt and the second transmission belt are toothed belts meshed with the gears.

Further, the middle part rear end of frame is equipped with the link, the link includes first linking arm and two second linking arms, first linking arm rigid coupling is on the frame, two second linking arms rigid coupling respectively in the both ends of first linking arm.

Further, a square hole is formed inside the first connecting arm; the end part of the second connecting arm is fixed with a square pipe, and the square pipe is connected in the square hole in a penetrating manner so that the second connecting arm is fixedly connected with the first connecting arm.

Furthermore, the bottom of frame still is equipped with the connecting rod, and the one end of connecting rod articulates in the rear end of frame, and the other end of connecting rod is connected with the wheel components.

Further, the roller assembly comprises a fixed rod and two rollers, the connecting rod is fixed to the middle of the fixed rod, and the two rollers are respectively installed at two ends of the fixed rod.

Furthermore, the top end of the frame is provided with a handrail.

Compared with the prior art, the beneficial effects of the utility model reside in that: it is when drive wheel rotates, and the hand cranking bar rotates and drives first drive wheel and rotate, and the rotation of first drive wheel can drive the second drive wheel through first drive belt transmission and rotate, and the second drive wheel rotates accessible second drive belt transmission, alright drive the third drive wheel and rotate, and then make the wheel rotate, so, the power of hand cranking bar output can be through two transmissions of first drive belt and second drive belt, and less power just can make the wheel rotate, uses laborsaving light more.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the local decomposition structure of the present invention.

In the figure: 10. a frame; 11. a mounting frame; 12. a connecting rod; 13. fixing the rod; 14. a roller; 15. a handrail; 20. a wheel; 31. a hand lever; 32. a first drive wheel; 33. a second drive wheel; 34. a third drive wheel; 35. a first drive belt; 36. a second belt; 40. a connecting frame; 41. a first connecting arm; 411. a square hole; 42. a second connecting arm; 421. and (4) square tubes.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 and 2, the hand-operated vehicle structure includes a vehicle frame 10, a wheel 20 and a driving mechanism, wherein the wheel 20 is pivotally connected to a bottom end of the vehicle frame 10, and the driving mechanism is used for driving the wheel 20 to rotate. Specifically, the driving mechanism includes a hand lever 31, a first driving wheel 32, a second driving wheel 33, a third driving wheel 34, a first transmission belt 35 and a second transmission belt 36, the top end of the frame 10 is fixedly connected with the mounting frame 11, the first driving wheel 32 is pivoted to one end of the mounting frame 11, the second driving wheel 33 is pivoted to the other end of the mounting frame 11, and the third driving wheel 34 is connected with the wheel 20. In addition, one end of the first belt 35 is synchronously wound on the outer surface of the first driving wheel 32; the other end of the first transmission belt 35 is synchronously wound on the outer surface of the second driving wheel 33; one end of the second belt 36 is synchronously wound around the outer surface of the second driving wheel 33, and the other end of the second belt 36 is synchronously wound around the outer surface of the third driving wheel 34. One end of the hand lever 31 is attached to the first driving wheel 32, and the other end of the hand lever 31 is formed as a hand end.

On the basis of the structure, use the utility model discloses a during the hand locomotive, can hold hand cranking end of hand rocker 31, the staff waves hand rocker 31, hand rocker 31 rotates and to drive the rocker and rotate and drive first drive wheel 32 and rotate, first drive wheel 32's rotation can drive second drive wheel 33 through the transmission of first drive belt 35 and rotate, second drive wheel 33 rotates the transmission of accessible second drive belt 36, alright drive third drive wheel 34 and rotate, and then make wheel 20 rotate, so, the power of hand rocker 31 output can be through the transmission of first drive belt 35 and second drive belt 36 twice, less power just can make wheel 20 rotate, it is more laborsaving lighter to use.

Further, the driving mechanism further includes a non-return assembly, and when the first driving wheel 32 rotates around the first rotation direction, the non-return assembly can enable the third driving wheel 34 and the first driving wheel 32 to rotate synchronously; when the first driving wheel 32 rotates around the second rotation direction, the check assembly can limit the third driving wheel 34 to rotate; the first rotational direction is opposite to the second rotational direction. Specifically, first direction of rotation is clockwise, and the second direction of rotation is anticlockwise, and so, when hand cranking bar 31 clockwise rotates, can drive first drive wheel 32 and rotate, and the rotation of first drive wheel 32 can drive second drive wheel 33 through the transmission of first drive belt 35 and rotate, and second drive wheel 33 rotates the transmission of accessible second drive belt 36, alright drive third drive wheel 34 and rotate, and then make wheel 20 rotate, can advance. When the hand lever 31 is rotated counterclockwise, the first driving wheel 32 can not drive the wheel 20 to rotate even if rotating, i.e. braking is performed.

The non-return assembly in this embodiment may be a ratchet mechanism in the prior art, that is, the non-return assembly includes a ratchet and a pawl, the ratchet is synchronously coupled with the third driving wheel 34, and the pawl is connected to the wheel 20, when the first driving wheel 32 rotates clockwise, the first driving wheel 32 drives the second driving wheel 33 to rotate through the first transmission belt 35, the second driving wheel 33 rotates through the second transmission belt 36 to rotate the third driving wheel 34, and further the wheel 20 rotates, the ratchet synchronously rotates with the ratchet synchronously connected to the third driving wheel 34, at this time, the pawl can move along the rotation direction of the ratchet, and when the first driving wheel 32 rotates along the second rotation direction, the pawl can be embedded into the tooth space of the ratchet to prevent the ratchet from rotating, so as to prevent the third driving wheel 34 from rotating, and the wheel 20 cannot rotate.

Furthermore, the first driving wheel 32, the second driving wheel 33 and the third driving wheel 34 are all gears, the first transmission belt 35 and the second transmission belt 36 are both toothed belts meshed with the gears, and meshed transmission of the gears and the toothed belts is adopted, so that the gear transmission device has a better transmission ratio and is more labor-saving.

Of course, the first driving wheel 32, the second driving wheel 33, and the third driving wheel 34 can be synchronous wheels, and correspondingly, the first driving belt 35 and the second driving belt 36 can be synchronous belts, and transmission can also be achieved.

Further, a connecting frame 40 may be disposed at a rear end of the middle portion of the frame 10, where the connecting frame 40 includes a first connecting arm 41 and two second connecting arms 42, the first connecting arm 41 is fixedly connected to the frame 10, and the two second connecting arms 42 are respectively fixedly connected to two ends of the first connecting arm 41. When the hand trolley structure is connected with an external wheelchair or other components, the two second connecting arms 42 can be respectively fixed on the two sides of the wheelchair seat through bolts to realize connection.

More specifically, the first link arm 41 has a square hole 411 formed therein; a square tube 421 is fixed at the end of the second connecting arm 42, and the square tube 421 is inserted into the square hole 411 to fix the second connecting arm 42 to the first connecting arm 41. When the assembly promptly, can be with the one end of second linking arm 42 earlier through the screw assembly on the wheelchair seat, then the square pipe 421 cross-under of second linking arm 42 is in square hole 411, makes second linking arm 42 and first linking arm 41 rigid coupling, can make the wheelchair seat be connected with frame 10, avoids the locomotive direct and the assembly of wheelchair seat, and the dismouting is more convenient, and the assembly of square hole 411 and square pipe 421 can prevent to rotate. The first connecting arm 41 may be made of a square tube as in the prior art.

Further, still can still be equipped with connecting rod 12 in the bottom of frame 10, the one end of connecting rod 12 articulates in the rear end of frame 10, and the other end of connecting rod 12 is connected with the wheel components, and after frame 10 is connected with the exterior structure, the wheel components of connecting rod 12 bottom can play the auxiliary action, reduces the frictional force with frame 10 and ground after the connection of outside connecting part, orders about more laborsavingly.

More specifically, the roller assembly includes a fixing rod 13 and two rollers 14, the connecting rod 12 is fixed to the middle of the fixing rod 13, and the two rollers 14 are respectively installed at two ends of the fixing rod 13, so that the structure is stable.

Furthermore, the top end of the bicycle frame is provided with a handrail 15, so that the bicycle frame is convenient for people to hold by hands.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A hand trolley structure comprises a trolley frame, wheels and a driving mechanism, wherein the wheels are pivoted to the bottom end of the trolley frame, the driving mechanism is used for driving the wheels to rotate, the hand trolley structure is characterized in that the driving mechanism comprises a hand-operated rod, a first driving wheel, a second driving wheel, a third driving wheel, a first transmission belt and a second transmission belt, a mounting frame is fixedly connected to the top end of the trolley frame, the first driving wheel is pivoted to one end of the mounting frame, the second driving wheel is pivoted to the other end of the mounting frame, and the third driving wheel is connected with the wheels; one end of the first transmission belt is synchronously wound on the outer surface of the first driving wheel; the other end of the first transmission belt is synchronously wound on the outer surface of the second driving wheel; one end of the second transmission belt is synchronously wound on the outer surface of the second driving wheel, and the other end of the second transmission belt is synchronously wound on the outer surface of the third driving wheel; one end of the hand-operated rod is installed on the first driving wheel, and the other end of the hand-operated rod is formed into a hand-operated end.

2. The hand trolley structure according to claim 1, wherein the driving mechanism further comprises a check assembly for rotating the third driving wheel and the first driving wheel synchronously when the first driving wheel rotates in the first rotation direction; the non-return assembly is used for limiting the rotation of the third driving wheel when the first driving wheel rotates around the second rotation direction; the first rotational direction is opposite to the second rotational direction.

3. The hand trolley structure according to claim 2, wherein the backstop assembly comprises a ratchet wheel and a pawl, the ratchet wheel being synchronously coupled with the third drive wheel; the pawl is connected with the wheel and is used for being embedded into a tooth groove of the ratchet wheel when the first driving wheel rotates around the second rotating direction so as to prevent the ratchet wheel from rotating.

4. The hand trolley structure according to claim 1, wherein the first driving wheel, the second driving wheel and the third driving wheel are all gears, and the first transmission belt and the second transmission belt are all toothed belts engaged with the gears.

5. The hand trolley structure according to any one of claims 1 to 4, wherein a connecting frame is arranged at the rear end of the middle portion of the trolley frame, and the connecting frame comprises a first connecting arm and two second connecting arms, the first connecting arm is fixedly connected to the trolley frame, and the two second connecting arms are respectively and fixedly connected to two ends of the first connecting arm.

6. The hand trolley structure according to claim 5, wherein a square hole is formed inside the first connecting arm; the end part of the second connecting arm is fixed with a square pipe, and the square pipe is connected in the square hole in a penetrating manner so that the second connecting arm is fixedly connected with the first connecting arm.

7. The structure of the hand trolley as claimed in any one of claims 1 to 4, wherein a connecting rod is further provided at the bottom end of the frame, one end of the connecting rod is hinged to the rear end of the frame, and the other end of the connecting rod is connected with a roller assembly.

8. The structure of the hand trolley as claimed in claim 7, wherein the roller assembly comprises a fixing rod and two rollers, the connecting rod is fixed with the middle part of the fixing rod, and the two rollers are respectively installed at both ends of the fixing rod.

9. The hand trolley structure according to any one of claims 1 to 4, wherein a handrail is provided at the top end of the frame.