CN-224225043-U - Four-wheel shifter

CN224225043UCN 224225043 UCN224225043 UCN 224225043UCN-224225043-U

Abstract

The utility model provides a four-wheel shifter which comprises a traction wheel train, a connecting frame, a connecting assembly, a push-pull rod and a control system, wherein the connecting frame is fixed above the traction wheel train, the connecting assembly and the control system are both fixed on the connecting frame, the push-pull rod is arranged on the connecting frame, the connecting assembly is used for connecting a towed device, two ends of the connecting frame are respectively provided with a front supporting wheel and a rear supporting wheel, and the front supporting wheel and the rear supporting wheel are arranged at two sides of the traction wheel train. The traction tool solves the technical problems that the existing traction tool is easy to reverse and even the whole car overturns when a trailer with larger self-mass is pulled, and has larger potential safety hazard. The utility model can be widely applied to traction of the trailer type vehicle.

Inventors

WANG CHUANJIE
LIU WEI
LIU PENGFEI
SHI YUBO
SHEN BOWEN

Assignees

荣成康怡新材料科技有限公司
佛山司昌昌科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250623

Claims (10)

1. The utility model provides a four-wheel shifter, its characterized in that includes traction train, link, coupling assembling, push-pull rod and control system, the link is fixed traction train top, coupling assembling and control system are all fixed on the link, the push-pull rod is installed on the link, coupling assembling is used for connecting by traction device, the link both ends set up front supporting wheel and back supporting wheel respectively, front supporting wheel and back supporting wheel are established traction train's both sides.
2. The four-wheel shifter according to claim 1, wherein the traction train comprises an axle, a driving motor, a transmission device and two traction wheels, the two traction wheels are arranged at two ends of the axle, the driving motor drives the traction wheels to rotate through the transmission device, and the transmission device is in gear transmission or chain transmission.
3. The four-wheel shifter of claim 2, wherein at least one of the front and rear support wheels is suspended under the traction wheel support.
4. The four-wheel shifter according to claim 2, wherein the connecting frame comprises a cross beam, a front longitudinal beam and a rear longitudinal beam, two support columns are arranged on the axle, the cross beam is fixed above the support columns, the front longitudinal beam and the rear longitudinal beam are perpendicular to the cross beam and are arranged on two sides of the cross beam, the connecting point is located in the middle of the cross beam, the front support wheel is fixedly arranged on the lower portion of one end, far away from the cross beam, of the front longitudinal beam, and the rear support wheel is fixedly arranged on the lower portion of one end, far away from the cross beam, of the rear longitudinal beam.
5. The four-wheel shifter according to claim 4, wherein the connection assembly comprises an outer cylinder, an inner cylinder and a ball head, the outer cylinder is vertically fixed on the cross beam, the inner cylinder is sleeved in the outer cylinder, the inner cylinder is located above the cross beam, nuts are arranged at two ends of the inner cylinder, and the ball head is mounted on the nuts at one end of the ball head through threads.
6. The four-wheel shifter according to claim 5, wherein the outer and inner cylinders are provided with limit pin holes of uniform size and are connected by a limit pin, and the limit pin holes of the inner cylinder are provided at positions offset from the axial center plane thereof.
7. The four-wheel shifter according to claim 4, wherein the end portion of the front longitudinal beam, which is far away from the cross beam, is fixedly provided with an angle adjusting member, the cross section of the angle adjusting member is U-shaped, two side walls of the angle adjusting member penetrate through and are provided with hinge holes, one end of the push-pull rod is hinged to the angle adjusting member in a matched manner through a hinge shaft and the hinge holes, the two side walls of the angle adjusting member are provided with a plurality of indexing pin holes around the hinge holes, the push-pull rod is provided with matching holes with the same size as the indexing pin holes, and the gradient of the push-pull rod is adjusted by penetrating the matching holes and the indexing pin holes with different angles through indexing pins.
8. The four-wheel shifter according to claim 4, wherein the push-pull rod has an adjustable gradient and an adjustable length, the push-pull rod comprises an inner square tube and an outer square tube, the outer square tube and the inner square tube are sleeved and connected, the inner square tube and the outer square tube are in clearance fit, a locking hole is formed in the side wall of the outer square tube, a plurality of adjusting pin holes matched with the locking hole in size are formed in the side wall of the inner square tube, and the locking hole is connected with one of the adjusting pin holes through an adjusting pin.
9. The four-wheel shifter according to claim 8, wherein the control system comprises a controller, a battery pack and a command end, wherein a containing box is arranged on the front longitudinal beam, the controller and the battery pack are arranged in the containing box, the command end comprises an accelerator rotating handle and a direction switching switch, a handle is arranged at the upper end of the push-pull rod, the accelerator rotating handle is arranged on the handle, the direction switching switch is arranged on the side wall of the inner square tube, and the command end is connected with the controller through a signal wire.
10. The four-wheel shifter of claim 9, wherein a power switch and a charging interface connected to the controller are provided on a side wall of the housing case.

Description

Four-wheel shifter Technical Field The utility model relates to a traction tool, in particular to a four-wheel shifter. Background The shifter is a traction tool for changing the parking position in a small range after the trailer is separated from the tractor. In the Chinese patent with the publication number of CN211442351U, an electric tractor is disclosed, which comprises a rear axle motor, rear wheels, front wheels, a connecting frame, a handlebar, a handle, a power box and a ball seat, when the electric tractor is used, the ball of the ball seat is pulled out to be connected to an external logistics trolley, then the rear axle motor drives the rear wheels, and the handle of the handlebar is manually pulled to drag the external logistics trolley connected with the electric tractor to move. It is known that the forces of a trailing car as a house to a connection with a tractor are not vertically downward, but there is a torque swinging around the wheels of the car as a house. Therefore, the technical scheme disclosed in the above patent can only be used for the logistics trolley with smaller load, and for the trailing type motor home with larger self-mass, the torque can force the tractor to turn around the rear wheel to the end far away from the handle bar, the phenomenon that the front wheel is tilted occurs, even the possibility that the tractor is entirely overturned exists, and the potential safety hazard is larger. Disclosure of Invention Aiming at the technical problems that the existing traction tool is easy to reverse and even overturn the whole car when pulling a trailer with larger self-weight and has larger potential safety hazard, the utility model provides the four-wheel shifter which can effectively prevent the car body from overturning or overturning in the traction process and has higher safety performance, convenient operation and better universality. The four-wheel shifter comprises a traction wheel train, a connecting frame, a connecting assembly, a push-pull rod and a control system, wherein the connecting frame is fixed above the traction wheel train, the connecting assembly and the control system are both fixed on the connecting frame, the push-pull rod is installed on the connecting frame, the connecting assembly is used for connecting a towed device, a front supporting wheel and a rear supporting wheel are respectively arranged at two ends of the connecting frame, and the front supporting wheel and the rear supporting wheel are arranged at two sides of the traction wheel train. Preferably, the traction wheel train comprises an axle, a driving motor, a transmission device and two traction wheels, wherein the two traction wheels are arranged at two ends of the axle, the driving motor drives the traction wheels to rotate through the transmission device, and the transmission device is in gear transmission or chain transmission. Preferably, at least one of the front supporting wheel and the rear supporting wheel is suspended under the support of the traction wheel. Preferably, the connecting frame comprises a cross beam, a front longitudinal beam and a rear longitudinal beam, two supporting columns are arranged on the axle, the cross beam is fixed above the supporting columns, the front longitudinal beam and the rear longitudinal beam are perpendicular to the cross beam and are arranged on two sides of the cross beam, the connecting points are located in the middle of the cross beam, the front supporting wheels are fixedly arranged on the lower portion of one end, far away from the cross beam, of the front longitudinal beam, and the rear supporting wheels are fixedly arranged on the lower portion, far away from one end, of the rear longitudinal beam. Preferably, the connecting assembly comprises an outer cylinder, an inner cylinder and a ball head, wherein the outer cylinder is vertically fixed on the cross beam, the inner cylinder is sleeved in the outer cylinder, the inner cylinder is positioned above the cross beam, nuts are arranged at two ends of the inner cylinder, and the ball head is installed on the nuts at one end of the ball head through threads. Preferably, the outer cylinder and the inner cylinder are provided with limit pin holes with consistent sizes and are connected through limit pins, and the limit pin holes on the inner cylinder are arranged at positions deviating from the axial center plane of the inner cylinder. Preferably, the end part of the front longitudinal beam, which is far away from the cross beam, is fixedly provided with an angle adjusting part, the cross section of the angle adjusting part is U-shaped, two side walls of the angle adjusting part are provided with hinge holes in a penetrating manner, one end of the push-pull rod is hinged to the angle adjusting part in a matched manner through a hinge shaft and the hinge holes, a plurality of indexing pin holes are formed in the two side walls of the angle adjusting part around the hinge holes, and the p