Carrying vehicle with auxiliary wheel structure

Abstract

The utility model provides a carrier with an auxiliary wheel structure, which comprises a bearing frame and a driving wheel assembly horizontally and rotatably connected to the lower end of the bearing frame, and the upper end of the bearing frame is used for being rotatably connected with a frame in the carrier; the carrier further comprises two auxiliary wheels symmetrically arranged on the left side and the right side of the driving wheel assembly, supports are fixed to the left end and the right end of the bearing frame, and each auxiliary wheel is rotationally connected with the lower end of the support on the corresponding side. According to the utility model, the goods carrying vehicle can be effectively prevented from rolling over and even turning over, and potential safety hazards are eliminated.

Description

Technical Field

[0001] This utility model relates to the field of cargo handling vehicle technology, and more specifically, to a cargo handling vehicle with an auxiliary wheel structure. Background Technology

[0002] A freight transport vehicle is a handling device used to move goods. When in use, the freight transport vehicle is driven by a drive wheel assembly mounted on a support frame. However, in the existing freight transport vehicle structure, because the drive wheel assembly is a single-wheel drive structure and is located in the middle of the rear side of the freight transport vehicle, the freight transport vehicle is prone to tilting or even overturning when turning, which poses a significant safety hazard. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a transport vehicle with an auxiliary wheel structure, which can effectively prevent the transport vehicle from tilting or even overturning, thus eliminating safety hazards.

[0004] This utility model provides a transport vehicle with an auxiliary wheel structure, including a support frame and a drive wheel assembly horizontally rotatably connected to the lower end of the support frame. The upper end of the support frame is used to rotatably connect with the frame of the transport vehicle. The transport vehicle also includes two auxiliary wheels symmetrically arranged on the left and right sides of the drive wheel assembly. A bracket is fixed on both the left and right ends of the support frame, and each auxiliary wheel is rotatably connected to the lower end of the bracket on the corresponding side.

[0005] By adopting the above structure, the auxiliary wheels located on both sides of the drive wheel assembly can provide auxiliary support to the load-bearing frame. That is, when the cargo handling vehicle turns, the auxiliary wheels can provide auxiliary support to the load-bearing frame, thereby effectively preventing the cargo handling vehicle from tilting or even overturning, and eliminating safety hazards.

[0006] In one possible implementation, each support is L-shaped; the upper end of the vertical section of each support is fixed to the end of the support frame, and each auxiliary wheel is rotatably connected to the lower end of the horizontal section of the corresponding support; each support is provided with a reinforcing structure to improve the support's resistance to deformation; by adopting this structure, the support can be reliably fixed to the support frame, and the auxiliary wheel can be reliably rotatably connected to the lower end of the support. In addition, by providing a reinforcing structure on the support, the support's resistance to deformation can be improved, thereby improving the reliability of the auxiliary wheel's support to the support frame.

[0007] In one possible implementation, each reinforcing structure includes an "L"-shaped reinforcing plate; the vertical edge of each reinforcing plate is vertically welded and fixed to the middle of the outer side wall of the vertical section of the corresponding side of the bracket, and the horizontal edge of each reinforcing plate is vertically welded and fixed to the middle of the upper end face of the horizontal section of the corresponding side of the bracket; by adopting this structure, under the action of the reinforcing plate, the structural strength and deformation resistance of the bracket can be reliably improved, thereby improving the support reliability of the auxiliary wheelset bearing frame.

[0008] In one possible implementation, a bearing housing is welded and fixed to the lower end face of the horizontal section of each bracket, and a bearing is embedded in the inner side of each bearing housing; a rotating shaft is vertically fixed to the upper end of each auxiliary wheel, and the upper end of each rotating shaft is inserted into the inner ring of the bearing on the corresponding side; by adopting this structure, under the cooperative action of the rotating shaft, bearing and bearing housing, each auxiliary wheel can be reliably rotatably connected to the lower end of the bracket on the corresponding side.

[0009] In one possible implementation, an annular step is provided on the inner wall of the upper part of each bearing housing, and the upper end of the outer ring of each bearing abuts against the annular step on the corresponding side of the bearing housing; a first retaining ring is fitted on the inner wall of the lower end of each bearing housing, and each first retaining ring is used to abut against the lower end of the outer ring on the corresponding side of the bearing to prevent the bearing from vertically disengaging from the bearing housing; by adopting this structure, the axial positioning of the bearing can be reliably achieved by the cooperation of the annular step and the first retaining ring, and the axial disengagement of the bearing from the bearing housing can be effectively prevented by the action of the first retaining ring.

[0010] In one possible implementation, each shaft has an annular protrusion on its outer peripheral wall. The upper end of each annular protrusion abuts against the lower end of the inner ring on the corresponding side of the bearing. A second retaining ring is fitted onto the upper end of each shaft. Each second retaining ring abuts against the upper end of the inner ring on the corresponding side of the bearing to prevent the shaft from vertically disengaging from the bearing. With this structure, the axial disengagement of the shaft from the bearing can be effectively prevented by the cooperation of the annular protrusion and the second retaining ring.

[0011] In one possible implementation, the lower end of each annular protrusion abuts against and is welded to the upper end of the corresponding auxiliary wheel; each auxiliary wheel has an assembly hole at its upper end, and the lower end of each shaft is inserted into the assembly hole on the corresponding auxiliary wheel and welded to the assembly hole; by adopting this structure, the lower end of the shaft can be reliably fixed to the upper end of the auxiliary wheel; in addition, when the lower end of the shaft is assembled with the auxiliary wheel, the lower end of the shaft can be inserted into the assembly hole on the auxiliary wheel, and the annular protrusion can abut against the upper end of the auxiliary wheel, thereby limiting the position of the shaft and the auxiliary wheel, which facilitates the welding and fixing of the shaft and the auxiliary wheel. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle;

[0014] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 4 for Figure 3 A magnified structural diagram of section B. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0018] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] See Figure 1-4As shown in the figure, this application discloses a transport vehicle with an auxiliary wheel structure, including a support frame 1 and a drive wheel assembly 2 that is horizontally rotatably connected to the lower end of the support frame 1. The upper end of the support frame 1 is used to rotatably connect with the frame of the transport vehicle. The transport vehicle also includes two auxiliary wheels 3 that are symmetrically arranged on the left and right sides of the drive wheel assembly 2. A bracket 4 is fixed on both the left and right ends of the support frame 1, and each auxiliary wheel 3 is rotatably connected to the lower end of the bracket 4 on the corresponding side.

[0021] Each bracket 4 is L-shaped; the upper end of the vertical section 41 of each bracket 4 is fixed to the end of the support frame 1, and each auxiliary wheel 3 is rotatably connected to the lower end of the horizontal section 42 of the corresponding bracket 4; each bracket 4 is provided with a reinforcing structure to improve the deformation resistance of the bracket 4; by adopting this structure, the bracket can be reliably fixed together with the support frame, and the auxiliary wheel can be reliably rotatably connected to the lower end of the bracket. In addition, by providing a reinforcing structure on the bracket, the deformation resistance of the bracket can be improved, thereby improving the reliability of the auxiliary wheel's support to the support frame.

[0022] Each reinforcing structure includes an "L"-shaped reinforcing plate 5; the vertical edge 51 of each reinforcing plate 5 is vertically welded and fixed to the middle of the outer side wall of the vertical section 41 of the corresponding side of the bracket 4, and the horizontal edge 52 of each reinforcing plate 5 is vertically welded and fixed to the middle of the upper end face of the horizontal section 42 of the corresponding side of the bracket 4; by adopting this structure, under the action of the reinforcing plate, the structural strength and deformation resistance of the bracket can be reliably improved, thereby improving the support reliability of the auxiliary wheelset bearing frame.

[0023] Each bracket 4 has a bearing seat 6 welded and fixed to the lower end face of the horizontal section 42, and a bearing 7 is embedded in the inner side of each bearing seat 6; each auxiliary wheel 3 has a rotating shaft 8 vertically fixed to its upper end, and the upper end of each rotating shaft 8 is inserted into the inner ring of the bearing 7 on the corresponding side; by adopting this structure, under the cooperation of the rotating shaft, bearing and bearing seat, each auxiliary wheel can be reliably rotatably connected to the lower end of the bracket on the corresponding side.

[0024] Each bearing housing 6 has an annular step 62 on its upper inner wall, and the upper end of the outer ring of each bearing 7 abuts against the annular step 62 on the corresponding side of the bearing housing 6. Each bearing housing 6 has a first retaining spring 61 on its lower inner wall, and each first retaining spring 61 abuts against the lower end of the outer ring of the corresponding side of the bearing 7 to prevent the bearing 7 from vertically disengaging from the bearing housing 6. With this structure, the axial positioning of the bearing can be reliably achieved by the cooperation of the annular step and the first retaining spring. In addition, the bearing can be effectively prevented from axially disengaging from the bearing housing by the first retaining spring.

[0025] Each rotating shaft 8 has an annular protrusion 81 on its outer peripheral wall. The upper end of each annular protrusion 81 abuts against the lower end of the inner ring on the corresponding side of the bearing 7. Each rotating shaft 8 has a second retaining spring 82 clamped at its upper end. Each second retaining spring 82 is used to abut against the upper end of the inner ring on the corresponding side of the bearing 7 to prevent the rotating shaft 8 from vertically disengaging from the bearing 7. With this structure, the axial disengagement of the rotating shaft from the bearing can be effectively prevented by the cooperation of the annular protrusion and the second retaining spring.

[0026] The lower end of each annular protrusion 81 abuts against and is welded to the upper end of the corresponding auxiliary wheel 3. Each auxiliary wheel 3 has an assembly hole 31 at its upper end, and the lower end of each shaft 8 is inserted into the assembly hole 31 on the corresponding auxiliary wheel 3 and welded to the assembly hole 31. With this structure, the lower end of the shaft can be reliably fixed to the upper end of the auxiliary wheel. In addition, when the lower end of the shaft is assembled with the auxiliary wheel, the lower end of the shaft can be inserted into the assembly hole on the auxiliary wheel, and the annular protrusion abuts against the upper end of the auxiliary wheel, thereby limiting the position of the shaft and the auxiliary wheel, which facilitates the welding and fixing of the shaft and the auxiliary wheel.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A transport vehicle with an auxiliary wheel structure, comprising a support frame (1) and a drive wheel assembly (2) horizontally rotatably connected to the lower end of the support frame (1), wherein the upper end of the support frame (1) is rotatably connected to the frame of the transport vehicle; characterized in that: The transport vehicle also includes two auxiliary wheels (3) symmetrically arranged on the left and right sides of the drive wheel assembly (2). The support frame (1) is fixed with brackets (4) at both ends. Each auxiliary wheel (3) is rotatably connected to the lower end of the corresponding bracket (4).

2. The transport vehicle with auxiliary wheel structure according to claim 1, characterized in that: Each of the brackets (4) is L-shaped; the upper end of the vertical section (41) of each bracket (4) is fixed to the end of the support frame (1), and each of the auxiliary wheels (3) is rotatably connected to the lower end of the horizontal section (42) of the bracket (4) on the corresponding side; each of the brackets (4) is provided with a reinforcing structure to improve the deformation resistance of the bracket (4).

3. The transport vehicle with auxiliary wheel structure according to claim 2, characterized in that: Each of the reinforcing structures includes an "L"-shaped reinforcing plate (5); the vertical edge (51) of each reinforcing plate (5) is vertically welded to the middle of the outer side wall of the vertical section (41) of the corresponding side bracket (4), and the horizontal edge (52) of each reinforcing plate (5) is vertically welded to the middle of the upper end face of the horizontal section (42) of the corresponding side bracket (4).

4. The transport vehicle with auxiliary wheel structure according to claim 2 or 3, characterized in that: Each of the brackets (4) has a bearing seat (6) welded and fixed on the lower end face of the horizontal section (42), and a bearing (7) is embedded in the inner side of each bearing seat (6); each of the auxiliary wheels (3) has a rotating shaft (8) vertically fixed at the upper end, and the upper end of each rotating shaft (8) is inserted into the inner ring of the bearing (7) on the corresponding side.

5. The transport vehicle with auxiliary wheel structure according to claim 4, characterized in that: An annular step (62) is provided on the inner wall of the upper part of each bearing housing (6), and the upper end of the outer ring of each bearing (7) abuts against the annular step (62) on the bearing housing (6) on the corresponding side; a first retaining ring (61) is fitted on the inner wall of the lower end of each bearing housing (6), and each first retaining ring (61) is used to abut against the lower end of the outer ring on the bearing (7) on the corresponding side to prevent the bearing (7) from vertically disengaging from the bearing housing (6).

6. The transport vehicle with auxiliary wheel structure according to claim 4, characterized in that: Each of the rotating shafts (8) has an annular protrusion (81) on its outer peripheral wall. The upper end of each annular protrusion (81) abuts against the lower end of the inner ring on the corresponding bearing (7). Each of the rotating shafts (8) has a second retaining ring (82) attached to its upper end. Each second retaining ring (82) is used to abut against the upper end of the inner ring on the corresponding bearing (7) to prevent the rotating shaft (8) from vertically disengaging from the bearing (7).

7. The transport vehicle with auxiliary wheel structure according to claim 6, characterized in that: The lower end of each of the annular protrusions (81) abuts against and is welded to the upper end of the corresponding auxiliary wheel (3); the upper end of each of the auxiliary wheels (3) is provided with an assembly hole (31), and the lower end of each of the rotating shafts (8) is inserted into the assembly hole (31) on the corresponding auxiliary wheel (3) and welded to the assembly hole (31).

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