CN-224200469-U - Supporting wheel structure and box

CN224200469UCN 224200469 UCN224200469 UCN 224200469UCN-224200469-U

Abstract

The utility model discloses a supporting wheel structure and a box body, wherein the supporting wheel structure comprises a first positioning frame and a second positioning frame which are sequentially arranged along the vertical direction, a transmission rod which extends along the vertical direction and is connected with the first positioning frame in a threaded manner, the transmission rod can rotate relative to the first positioning frame so that the transmission rod can vertically lift relative to the first positioning frame, a supporting rod which extends along the vertical direction and is connected to the second positioning frame in a sliding manner along the vertical direction, the top end of the supporting rod is connected with or abutted against the bottom end of the transmission rod, and a trundle which is arranged at the bottom of the supporting rod, wherein the trundle can lift along with the lifting of the transmission rod. According to the utility model, the transmission rod can vertically ascend or descend along the first locating frame by rotating the transmission rod, so that force is transmitted to the support rod connected or abutted to the bottom of the transmission rod, and the support rod is driven to slide and ascend or descend along the second locating frame, so that the caster wheels arranged at the bottom of the support rod are ascended or descended, the service life of the caster wheels is prolonged, the bending risk of the transmission rod is reduced, and the service life of the transmission rod is prolonged.

Inventors

CHEN HAO
CONG XIUFENG
LI TIANSHENG
Gao Youcheng
SONG ZHAOCHUN

Assignees

大连中集物流装备有限公司
中国国际海运集装箱(集团)股份有限公司
中集运载科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250416

Claims (10)

1. A support wheel structure, comprising: The first positioning frame and the second positioning frame are vertically and sequentially arranged; The transmission rod extends vertically and is in threaded connection with the first positioning frame, and the transmission rod can rotate relative to the first positioning frame so that the transmission rod can vertically lift relative to the first positioning frame; The supporting rod extends vertically and is connected to the second positioning frame in a sliding manner vertically, and the top end of the supporting rod is connected or abutted with the bottom end of the transmission rod; a caster wheel provided at the bottom of the stay; the caster can be lifted along with the lifting of the transmission rod.
2. The support wheel structure of claim 1, further comprising: And the resetting piece is connected between the second locating frame and the supporting rod and is configured to provide upward moving force for the supporting rod so as to enable the top end of the supporting rod to keep abutting with the bottom end of the transmission rod.
3. The support wheel structure of claim 2, wherein, A limiting structure is arranged on the periphery of the stay bar in an outward protruding mode, the limiting structure is positioned above the second positioning frame at intervals, and the resetting piece is positioned between the limiting structure and the second positioning frame; the resetting piece is sleeved on the periphery of the stay bar; The return member includes a compression spring.
4. The support wheel structure of claim 3, wherein the support wheel structure comprises a plurality of support wheels, The reset piece also comprises a baffle plate which is connected with the top end of the compression spring, and/or The limiting structure comprises a pin shaft, the pin shaft is detachably arranged on the supporting rod in a penetrating mode, and at least one end of the axial direction of the pin shaft extends out of the outer wall of the supporting rod and is used for the reset piece to abut against.
5. The support wheel structure of claim 1, wherein the support wheel structure comprises a plurality of support wheels, The axial length of the transmission rod is smaller than that of the supporting rod, and/or The axis extending direction of the transmission rod is mutually overlapped with the axis extending direction of the supporting rod.
6. The support wheel structure of claim 2, wherein, The inside of the stay bar is hollow; The inner bottom end of the supporting rod is clamped with a shaft sleeve, and the caster is in threaded connection with the shaft sleeve; the top end of the inside of the supporting rod is covered with a plug, and the transmission rod is propped against the plug.
7. Support wheel structure according to claim 1 or 2, characterized in that, The second locating rack includes upper fixed plate and lower fixed plate that upper and lower interval set up, upper fixed plate with lower fixed plate is used for setting up on the switch door, be equipped with the guiding hole on the upper fixed plate, be equipped with down the guiding hole on the lower fixed plate, the axial one end of vaulting pole upwards wears out the upper guiding hole and with the transfer line is connected or the butt, the axial other end of vaulting pole downwards wears out down the guiding hole and connects the truckle, the vaulting pole can be relative go up the guiding hole with the guiding hole slides from top to bottom down.
8. The support wheel structure of claim 1, wherein the support wheel structure comprises a plurality of support wheels, The first locating frame comprises a mounting plate which is arranged at intervals with the second locating frame, the mounting plate is used for being arranged on the switch door, and the mounting plate is provided with a screw hole which is matched and connected with the transmission rod.
9. The support wheel structure of claim 1, wherein the support wheel structure comprises a plurality of support wheels, A handle is arranged at one end of the transmission rod, which is far away from the stay bar; the handle comprises a seat plate and a handle, the transmission rod and the handle are respectively connected to two sides of the seat plate along the vertical direction, and the axis of the transmission rod and the axis of the handle are staggered in the vertical direction.
10. A box body, which is provided with a box body, characterized by comprising the following steps: A case structure formed with a door frame; the switch door is hinged with the door frame and is used for opening or closing the door frame; The supporting wheel structure according to any one of claims 1 to 9, wherein the first positioning frame and the second positioning frame are vertically and sequentially arranged on the switch door, and the caster is positioned at the bottom of the switch door.

Description

Supporting wheel structure and box Technical Field The application relates to the field of supporting wheels, in particular to a supporting wheel structure and a box body. Background Some cases for holding and protecting heavy goods, equipment or materials will be generally configured with heavy switch door, in order to be convenient for the opening of heavy door, play the purpose of protecting the connection hinge between heavy door and the case simultaneously, can install the truckle additional in the bottom of heavy door, truckle direct contact ground can be even with heavy door's weight dispersion, realizes heavy door's steady switching, protects the connection structure between heavy door and the case and the two. However, the casters always need to contact the ground, which easily causes abrasion of the casters and affects the service life of the casters. Disclosure of utility model In order to solve the problems, the application provides a supporting wheel structure. According to an aspect of an embodiment of the present application, a supporting wheel structure is disclosed, the supporting wheel structure including a first positioning frame and a second positioning frame which are sequentially arranged along a vertical direction; The transmission rod extends vertically and is in threaded connection with the first positioning frame, and the transmission rod can rotate relative to the first positioning frame so that the transmission rod can vertically lift relative to the first positioning frame; The supporting rod extends vertically and is connected to the second positioning frame in a sliding manner vertically, and the top end of the supporting rod is connected or abutted with the bottom end of the transmission rod; a caster wheel provided at the bottom of the stay; the caster can be lifted along with the lifting of the transmission rod. In an exemplary embodiment, a restoring member is connected between the second positioning frame and the stay, and the restoring member is configured to provide an upward moving force to the stay so that a top end of the stay maintains abutment with a bottom end of the transmission rod. In an exemplary embodiment, a limiting structure is arranged on the periphery of the stay bar in an outward protruding mode, the limiting structure is located above the second locating frame at intervals, and the reset piece is located between the limiting structure and the second locating frame; the resetting piece is sleeved on the periphery of the stay bar; The return member includes a compression spring. In one exemplary embodiment, the reset member further includes a stop connected to the top end of the compression spring, and/or The limiting structure comprises a pin shaft, the pin shaft is detachably arranged on the supporting rod in a penetrating mode, and at least one end of the axial direction of the pin shaft extends out of the outer wall of the supporting rod and is used for the reset piece to abut against. In one exemplary embodiment, the axial length of the drive rod is less than the axial length of the strut, and/or The axis extending direction of the transmission rod is mutually overlapped with the axis extending direction of the supporting rod. In an exemplary embodiment, the stay is hollow inside; The inner bottom end of the supporting rod is clamped with a shaft sleeve, and the caster is in threaded connection with the shaft sleeve; the top end of the inside of the supporting rod is covered with a plug, and the transmission rod is propped against the plug. In an exemplary embodiment, the second positioning frame includes upper fixed plate and lower fixed plate that upper and lower interval set up, upper fixed plate with lower fixed plate is used for setting up on the switch door, be equipped with the guiding hole on the upper fixed plate, be equipped with down the guiding hole on the lower fixed plate, the axial one end of vaulting pole upwards wears out upper guiding hole and with the transfer line is connected or the butt, the axial other end of vaulting pole downwards wears out lower guiding hole and connects the truckle, the vaulting pole can be relative upper guiding hole with lower guiding hole slides from top to bottom. In an exemplary embodiment, the first positioning frame comprises a mounting plate arranged at intervals with the second positioning frame, the mounting plate is used for being arranged on the switch door, and the mounting plate is provided with a screw hole in matched connection with the transmission rod. In an exemplary embodiment, a handle is arranged at one end of the transmission rod, which is far away from the stay rod; the handle comprises a seat plate and a handle, the transmission rod and the handle are respectively connected to two sides of the seat plate along the vertical direction, and the axis of the transmission rod and the axis of the handle are staggered in the vertical direction. According to an aspect of an embodiment of th