CN220842841U

CN220842841U - Bicycle dragging device

Info

Publication number: CN220842841U
Application number: CN202321647698.7U
Authority: CN
Inventors: 陈家欣; 陈宇轩; 徐运帷; 刘委丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2024-04-26
Anticipated expiration: 2033-06-27

Abstract

The utility model discloses a bicycle dragging device, which comprises a front connecting component, a middle piece, a rear connecting component, a trolley connecting component and a trolley connecting frame which are connected with each other, wherein the rear connecting component comprises two groups of first connecting arms and second connecting arms which are symmetrically arranged, the first connecting arms are connected to the second connecting arms through L-shaped pressing plates and bolts, clamping holes are formed in the L-shaped pressing plates, and the end parts of rotating shafts of front wheels of the trolley are clamped in the clamping holes; a rear inclined support frame is arranged between the first connecting arm and the middle piece, one end of the rear inclined support frame is connected to the top of the middle piece, the other end of the rear inclined support frame is connected with a lock shaft piece, and a clamping groove matched with the clamping hole is formed in the lock shaft piece. The utility model can adjust according to the wheel size of the rear vehicle, expands the application range, and connects the rear vehicle axle and the frame into a whole without movement by fixing the structure of the rear vehicle wheels and the frame, so that the rear vehicle axle and the frame do not move, and the bouncing and the activity of the rear vehicle are reduced.

Description

Bicycle dragging device

Technical Field

The utility model relates to the field of bicycle mobile auxiliary equipment, in particular to a bicycle dragging device.

Background

In the prior art, a bicycle dragging device is disclosed in a Chinese patent application publication specification with the patent number 202120523306.0, and comprises a folding connecting frame and a trolley connecting frame, wherein the front end of the folding connecting frame is clamped on a rear connecting shaft of a cart and locked and positioned through a fastening component, the rear end of the folding connecting frame is connected with a hook at the front end of the trolley connecting frame, the rear end of the trolley connecting frame is clamped and connected on a trolley frame, a trolley front wheel is lapped on the folding connecting frame to be positioned and not contacted with the ground during connection, a rotating shaft is arranged on the folding connecting frame, and the rotating shaft is positioned between a rear wheel of the cart and the trolley front wheel; the folding connecting frame is completely unfolded when in work and is folded and placed when not in work.

However, when the dragging device in the above patent is used, the size of the wheels of the rear vehicle is fixed, the wheels of the rear vehicle cannot be adjusted according to different sizes of the wheels of the rear vehicle, the application range is smaller, and when the rear vehicle is ridden on a bumpy road, if the rear vehicle is a bicycle with front shock absorption, the middle connecting frame and the rear supporting connecting rod can rotate relative to the third hinging piece, at the moment, the rear vehicle shock absorption can be repeatedly compressed and sprung out, the gravity center of a rider on the rear vehicle can be continuously changed, the gravity center of the rear vehicle is changed, the front vehicle can be unstable in riding, the safety accident is likely to be caused, the front wheel of the rear vehicle is pressed on the third hinging piece by gravity, the front wheel of the rear vehicle is not completely fixed, the front wheel of the rear vehicle can swing left and right, the gravity center of the rear vehicle can be changed left and right in the riding process, the front vehicle can be unstable in riding, and the safety accident is caused,

Disclosure of utility model

The object of the present utility model is to provide a bicycle dragging device that solves the above-mentioned problems.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model relates to a bicycle dragging device, which comprises a front connecting component, a middle piece, a rear connecting component, a trolley connecting component and a trolley connecting frame which are connected with each other, and is characterized in that: the rear connecting assembly comprises two groups of symmetrically arranged first connecting arms and second connecting arms, one end of each first connecting arm is connected to a first adjusting hole formed in the side wall of the middle piece, the other end of each first connecting arm is pressed against one end of each second connecting arm, the other end of each second connecting arm is connected with the trolley connecting assembly and the trolley connecting frame, a plurality of second adjusting holes are formed in each first connecting arm and each second connecting arm, the first connecting arms are connected to the second connecting arms through L-shaped pressing plates and bolts, clamping holes are formed in the L-shaped pressing plates, and the end parts of front wheel rotating shafts of the trolleys are clamped in the clamping holes; the novel anti-theft lock is characterized in that a rear inclined support frame is arranged between the first connecting arm and the middle piece, the rear inclined support frame is in a V shape, one end of the rear inclined support frame is connected to the top of the middle piece, two ends of the other end of the rear inclined support frame are respectively connected with a lock shaft piece, the lock shaft pieces are hinged to the L-shaped pressing plate through pins, and clamping grooves matched with the clamping holes are formed in the lock shaft pieces.

Further, the front connecting assembly comprises a clamping arm and a front inclined supporting frame, the clamping arm is connected with an axle of the front vehicle through two openings at the front end, the other end of the clamping arm is connected to the top of the middle piece, one end of the front inclined supporting frame is connected to the clamping arm, and the other end of the front inclined supporting frame is connected to the bottom of the middle piece.

Further, one end of the first connecting arm is connected to the first adjusting hole through a bolt and a nut.

Further, the dolly coupling assembling includes the concave plate and articulates the ring, two the tip of second linking arm with it is connected to cross the concave plate, be connected with the screw rod on the articulating the ring, the screw rod runs through behind the screw hole of seting up on the concave plate through the nut fixed, the articulates the ring and is connected with the dolly link, the dolly link is connected on the frame of back car.

Further, the trolley connecting frame comprises two symmetrically arranged connecting main boards and hooks connected below the connecting main boards, the connecting main boards are connected to the frame of the rear trolley through locking rings, and the hooks are hooked on the hooking rings.

Compared with the prior art, the utility model has the beneficial technical effects that:

the utility model can adjust the distance between the ends of the first connecting arm and the second connecting arm according to the wheel size of the rear vehicle, expands the application range, and connects the rear vehicle axle and the frame into a whole without movement by using the structure of connecting the front vehicle axle and fixing the rear vehicle wheel and the frame, so that the rear vehicle wheel axle and the frame do not move, the bouncing and the activity of the rear vehicle are reduced, and the risk that the rear vehicle wheel is separated from the bracket is reduced.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic view of a bicycle towing device according to the present utility model;

FIG. 2 is a front elevational view of the bicycle pulling device of the present utility model;

FIG. 3 is a front elevational view of the bicycle pulling device of the present utility model in use;

FIG. 4 is a schematic diagram of the towing and following steering of a front truck and a rear truck;

FIG. 5 is a view showing the connection state when only the wheel is towed in accordance with the present utility model;

Reference numerals illustrate: 1. a middleware; 2. a first connecting arm; 3. a second connecting arm; 4. a first adjustment aperture; 5. a second adjustment aperture; 6. an L-shaped pressing plate; 7. a clamping hole; 8. a rear inclined support frame; 9. a lock shaft member; 10. a clamping groove; 11. a clamping arm; 12. a front inclined support frame; 13. a hanging ring; 14. a screw; 15. a trolley connecting frame; 16. a concave plate.

Detailed Description

As shown in fig. 1 to 5, a bicycle towing device includes a front link assembly, a middle member 1, a rear link assembly, a cart link assembly and a cart link frame 15 connected to each other.

The front connecting assembly comprises a clamping arm 11 and a front inclined support frame 12, the clamping arm 11 is connected with an axle of a front vehicle through two openings at the front end, the other end of the clamping arm 11 is connected to the top of the middle piece 1, one end of the front inclined support frame 12 is connected to the clamping arm 11, and the other end of the front inclined support frame is connected to the bottom of the middle piece 1. The clamping arm 11 and the front inclined support frame 12 may be an integral structure, and the intermediate member 1 may perform a rotational movement about an axis formed by the clamping arm 11 and the front inclined support frame 12.

The rear connecting assembly comprises two groups of symmetrically arranged first connecting arms 2 and second connecting arms 3, one end of each first connecting arm 2 is connected to a first adjusting hole 4 formed in the side wall of the middle piece 1, the other end of each first connecting arm 2 is pressed onto one end of each second connecting arm 3, and the other end of each second connecting arm 3 is connected with the trolley connecting assembly and the trolley connecting frame 15. The first adjusting holes 4 are formed in a plurality, the first connecting arms 2 can be connected to different first adjusting holes 4 according to requirements, and other parts can be mounted on the rest first adjusting holes 4 which are not used, so that objects moving on other ground can be dragged at present, and the steering function of following a front vehicle is realized.

The trolley connecting component comprises a concave plate 16 and a hanging ring 13, the two ends of the second connecting arm 3 are connected with the concave plate 16, a screw 14 is connected to the hanging ring 13, the screw 14 penetrates through a threaded hole formed in the concave plate 16 and then is fixed through a nut, the hanging ring 13 is connected with a trolley connecting frame 15, and the trolley connecting frame 15 is connected to a frame of a rear trolley.

The trolley connecting frame 15 comprises two symmetrically arranged connecting main boards and hooks connected below the connecting main boards, the connecting main boards are connected to the frame of the rear trolley through locking rings, and the hooks are hooked on the hooking rings 13.

The utility model discloses a bicycle is characterized by comprising a middle piece 1, a first connecting arm 2, a second connecting arm 3, a lock shaft 9, a locking shaft 9, a clamping hole 7, a rear inclined support 8, a locking shaft 9, a clamping groove 10 and a clamping hole 7, wherein a plurality of second adjusting holes 5 are formed in the first connecting arm 2 and the second connecting arm 3, the first connecting arm 2 is connected to the second connecting arm 3 through an L-shaped pressing plate 6 and a bolt, the upper stacking sequence and the lower stacking sequence of the first connecting arm 2, the second connecting arm 3 and the L-shaped pressing plate 6 can be changed, the clamping hole 7 is formed in the L-shaped pressing plate 6, the front wheel rotating shaft end of the bicycle is clamped in the clamping hole 7, the rear inclined support 8 is in a V shape between the first connecting arm 2 and the middle piece 1, one end of the rear inclined support 8 is connected to the top of the middle piece 1, the two ends of the other end are respectively connected with the locking shaft 9, and the locking shaft 9 is hinged to the L-shaped pressing plate 6 through a pin. The locking shaft piece 9 on the rear inclined support frame 8 is hinged on the L-shaped pressing plate 6 and can rotate, one end of the rear inclined support frame 8 connected with the middle piece 1 is detached, the locking shaft piece 9 is enabled to rotate upwards, at the moment, an axle of a rear vehicle wheel can be placed in the clamping hole 7, then the locking shaft piece 9 is enabled to rotate downwards, the locking shaft piece 9 hooks the axle of the rear vehicle wheel through the matching of the clamping groove 10 and the clamping hole 7, the axle of the rear vehicle wheel is clamped in the clamping groove 10 and the clamping hole 7, and therefore the vehicle wheel is limited to be unable to move.

One end of the first connecting arm 2 is connected to the second adjusting hole 5 through a bolt and a nut, when the size of the front wheel of the rear vehicle is required to be adjusted, the bolt and the nut which are installed on the L-shaped pressing plate 6 are unscrewed, the second connecting arm 3 is pulled outwards or pushed inwards, the proper second adjusting hole 5 is selected, then the L-shaped pressing plate 6 is pressed above the two selected second adjusting holes 5, and the first connecting arm 2, the second connecting arm 3 and the L-shaped pressing plate 6 are fixed together through the bolt and the nut, so that the distance between the other two ends of the first connecting arm 2 and the second connecting arm 3 is changed.

As shown in fig. 4, when the rear vehicle has only one wheel and no frame, the function of dragging only a single wheel can be realized, and the structure is added on the single wheel, so that the function of carrying people or carrying goods on the rear wheel can be realized.

As shown in fig. 5, the principle of connecting the front and rear vehicles to drag and follow steering is as follows:

1) The product is connected with the wheel axle of the front vehicle through the point A

2) The product is connected with the wheel axle of the rear vehicle through the point D

3) The product is connected with a certain position of the rear vehicle frame through the E point

4) The straight line passing through G1 and G2 represents the horizontal line of the ground, and G1 and G2 represent the contact points of the front and rear wheels with the horizontal line of the ground

5) The three points A, B, C and B, C, D form a triangle delta ABC and a triangle delta BCD, and the two triangles are connected together through a bearing line formed by BC to form a whole rotating around the point A, so that the relative positions of the point A and the point D are unchanged.

6) Δdef and Δbcd are connected by point D, and line segment CD and line segment DE are in a common straight line, so Δabc and Δbcd and Δdef form a whole, and therefore the positions of all points on the three triangles are fixed, and the positions of point D and point F do not move relative to each other. If the rear front arm is provided with shock absorption (the moving direction is along the line segment DF), the frame can not move greatly relative to the front wheel axle of the rear vehicle due to shock absorption compression, so that the change range of the center of gravity of the rear vehicle can be effectively reduced.

7) The rear vehicle is a whole, and the relative position from the point E to the point G2 is also fixed

8) From the above, the distance from point A to point G2 is also fixed, and the distances between points A and G1 are also fixed, so that a ΔAG1G2 is finally formed, at this time, the rear front wheel is fixed on point D, and because point D does not move, the rear front wheel is set off the ground, the front vehicle moves forward, and the rear vehicle is towed forward

9) All components of the line segment BD forward are connected to the front truck, all components of the line segment BD backward are connected to the rear truck, and both components can rotate around the axis formed by the line segment BD. The rear vehicle can follow the front vehicle steering.

In addition, the connection points with the preceding vehicle and the following vehicle specified in the present utility model may be other points as long as the corresponding functions can be achieved. Such as: the point of the rear vehicle for fixing the wheels can be the point shown in the above figure, can be any part of the front axle part of the rear vehicle or the bogie, and can be any part of the tripod or the vehicle body for fixing the rear vehicle. The bracket structure of the utility model can be processed by a metal plate as shown in figure 1, or can be processed by tubular (round, triangular, special-shaped and the like) parts. The length of the adjustable telescopic movable device can be adjusted in multiple holes as shown in fig. 1, and the adjustable telescopic movable device can also be formed by any parts capable of realizing telescopic movement, such as a sleeve, a sliding rail and the like. The connection point in the utility model can be realized by using bolts, pins, welding or integral processing.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. The utility model provides a bicycle pulls device, includes interconnect's preceding coupling assembling, middleware (1), back coupling assembling, dolly coupling assembling and dolly link (15), its characterized in that: the rear connecting assembly comprises two groups of symmetrically arranged first connecting arms (2) and second connecting arms (3), one end of each first connecting arm (2) is connected to a first adjusting hole (4) formed in the side wall of the middle piece (1), the other end of each first connecting arm (2) is pressed onto one end of each second connecting arm (3), the other end of each second connecting arm (3) is connected with the trolley connecting assembly and the trolley connecting frame (15), a plurality of second adjusting holes (5) are formed in each first connecting arm (2) and each second connecting arm (3), each first connecting arm (2) is connected to the corresponding second connecting arm (3) through an L-shaped pressing plate (6) and a bolt, each L-shaped pressing plate (6) is provided with a clamping hole (7), and the end part of a front wheel rotating shaft of the trolley is clamped in the corresponding clamping hole (7); the novel anti-theft lock is characterized in that a rear inclined support frame (8) is arranged between the first connecting arm (2) and the middle piece (1), the rear inclined support frame (8) is in a V shape, one end of the rear inclined support frame (8) is connected with the top of the middle piece (1), two ends of the other end of the rear inclined support frame are respectively connected with a lock shaft piece (9), the lock shaft pieces (9) are hinged to the L-shaped pressing plate (6) through pins, and clamping grooves (10) matched with the clamping holes (7) are formed in the lock shaft pieces (9).

2. The bicycle towing attachment in accordance with claim 1 wherein: the front connecting assembly comprises a clamping arm (11) and a front inclined support frame (12), the clamping arm (11) is connected with an axle of a front vehicle through two openings at the front end, the other end of the clamping arm (11) is connected to the top of the middle piece (1), one end of the front inclined support frame (12) is connected to the clamping arm (11), and the other end of the front inclined support frame is connected to the bottom of the middle piece (1).

3. The bicycle towing attachment in accordance with claim 2 wherein: one end of the first connecting arm (2) is connected to the first adjusting hole (4) through a bolt and a nut.

4. The bicycle towing attachment in accordance with claim 1 wherein: the trolley connecting assembly comprises a concave plate (16) and a hanging ring (13), the two ends of the second connecting arm (3) are connected through the concave plate (16), a screw (14) is connected to the hanging ring (13), the screw (14) penetrates through a threaded hole formed in the concave plate (16) and then is fixed through a nut, the hanging ring (13) is connected with a trolley connecting frame (15), and the trolley connecting frame (15) is connected to a frame of a rear trolley.

5. The bicycle towing attachment in accordance with claim 4 wherein: the trolley connecting frame (15) comprises two symmetrically arranged connecting main boards and hooks connected below the connecting main boards, the connecting main boards are connected to the frame of the rear trolley through locking rings, and the hooks are hooked on the hooking rings (13).