Variable-power continuous wheel mounting structure

Abstract

The utility model provides a variable-power continuous wheel mounting structure. The variable-power continuous wheel mounting structure comprises a frame, a front walking wheel assembly and a rear walking wheel assembly are installed on the front side and the rear side of the frame respectively and connected through an upper swing rod, and a lower swing rod is connected to the middle section of the upper swing rod. The lower swing rod is connected to the power shaft and driven by the power shaft to rotate so that the lower swing rod can drive the upper swing rod to move along the rotating axis of the lower swing rod. By means of a reliable-structure and efficient power transmission mode, it can be guaranteed that power transmission is continuous and unchanged after the position of the wheel is changed, the service life of the bearing of the supporting shaft is long, and the long-term running stability is extremely good.

Description

Technical Field

[0001] The utility model relates to a wheel installation structure capable of changing power and continuity, and belongs to the technical field of logistics machinery and equipment. Background Art

[0002] Currently, the two-way and four-way shuttles widely used in logistics and warehousing typically have running wheels on tracks. Eccentric lifting is used to change the position of the running wheels relative to the vehicle body, thereby enabling the vehicle to be raised and lowered, allowing for the storage and retrieval of goods. However, when the wheel position changes, the relative center distance between the power transmission shaft and the running wheel axle changes, resulting in a loss of power transmission. The current common solution is to install a flexible and retractable universal coupling. This method subjects the connected shafts to not only torque but also radial and axial forces, severely impacting the bearing life of the supporting shaft. Furthermore, the universal joint transmission has a low lifespan and stability. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides a wheel mounting structure with variable power continuity. The wheel mounting structure with variable power continuity can ensure continuous power transmission after the wheel position changes in a structurally reliable and efficient power transmission manner.

[0004] The utility model is achieved through the following technical solutions.

[0005] The utility model provides a wheel mounting structure with variable power continuity, which includes a frame; a front running wheel assembly and a rear running wheel assembly are respectively mounted on the front and rear sides of the frame, the rear running wheel assembly and the front running wheel assembly are connected by an upper swing link, and the middle section of the upper swing link is connected to a lower swing link; the lower swing link is connected to a power shaft, and is driven to rotate by the power shaft so that the lower swing link drives the upper swing link to move along the rotation axis of the lower swing link; the upper swing link is rotatably connected to the rear running wheel assembly and the front running wheel assembly through a linkage shaft; the front running wheel assembly and the rear running wheel assembly have the same structure.

[0006] The lower swing rod is installed at the midpoint of the line connecting the rear running wheel assembly and the front running wheel assembly through a bearing seat.

[0007] The front running wheel assembly consists of a running wheel, which is mounted on a rotating shaft. A transmission gear is coaxially mounted on the rotating shaft. The transmission gear is engaged with a fixed gear, which is mounted on a transmission shaft. The transmission shaft and the rotating shaft are both mounted on a hinge rod, which is connected to the upper swing arm.

[0008] The rotating shaft is installed on the hinge rod through the second bearing, the transmission shaft is installed on the hinge rod through the first bearing, the transmission shaft is rotatably installed on the front bearing seat, and the front bearing seat is fixed to the vehicle frame.

[0009] A power transmission bevel gear is fixed on the inner end of the transmission shaft for power transmission input.

[0010] The hinge rod is an L-shaped block, the upper swing rod is connected to the long end, the rotating shaft is installed at the short end, and the transmission shaft is installed at the bend of the middle section.

[0011] The transmission gear key is connected to the rotating shaft, and the fixed gear key is connected to the transmission shaft.

[0012] The beneficial effects of the present invention are: it can ensure continuous power transmission after the wheel position changes in a structurally reliable and efficient power transmission manner, the bearing of the support shaft has a long life, and the long-term operation stability is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of at least one embodiment of the utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle front running wheel assembly;

[0015] Figure 3 yes Figure 2 Schematic diagram of the structure without the power transmission bevel gear and bearing seat.

[0016] In the figure: 1-front running wheel assembly, 2-frame, 3-power shaft, 4-rear running wheel assembly, 5-lower swing link, 6-bearing seat, 7-linkage shaft, 8-upper swing link, 101-hinge rod, 102-first bearing, 103-second bearing, 104-rotating shaft, 105-transmission shaft, 106-fixed gear, 107-transmission gear, 108-running wheel, 109-power transmission bevel gear, 110-front bearing seat. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0018] The first embodiment of the present invention relates to Figures 1 to 3 The wheel mounting structure with variable power continuity shown in the figure includes a frame 2; the front and rear sides of the frame 2 are respectively installed with a front running wheel assembly 1 and a rear running wheel assembly 4, the rear running wheel assembly 4 and the front running wheel assembly 1 are connected by an upper swing link 8, and the middle section of the upper swing link 8 is connected to a lower swing link 5; the lower swing link 5 is connected to the power shaft 3, and is driven to rotate by the power shaft 3 so that the lower swing link 5 drives the upper swing link 8 to move along the rotation axis of the lower swing link 5; the upper swing link 8 is rotatably connected to the rear running wheel assembly 4 and the front running wheel assembly 1 through a linkage shaft 7; the front running wheel assembly 1 and the rear running wheel assembly 4 have the same structure.

[0019] The second embodiment of the present invention is substantially the same as the first embodiment, mainly in that the lower swing link 5 is installed at the midpoint of the line connecting the rear running wheel assembly 4 and the front running wheel assembly 1 through the bearing seat 6 .

[0020] The third embodiment of the present invention is roughly the same as the first embodiment, mainly in that the front running wheel assembly 1 consists of a running wheel 108, the running wheel 108 is mounted on the rotating shaft 104, a transmission gear 107 is coaxially mounted on the rotating shaft 104, the transmission gear 107 is engaged and transmitted to the fixed gear 106, the fixed gear 106 is mounted on the transmission shaft 105, the transmission shaft 105 and the rotating shaft 104 are both mounted on the hinge rod 101, and the hinge rod 101 is connected to the upper swing link 8.

[0021] Furthermore, the rotating shaft 104 is installed on the hinge rod 101 through the second bearing 103, and the transmission shaft 105 is installed on the hinge rod 101 through the first bearing 102. The transmission shaft 105 is rotatably installed on the front bearing seat 110, and the front bearing seat 110 is fixed to the frame 2.

[0022] Furthermore, a power transmission bevel gear 109 is fixed to the inner end of the transmission shaft 105 for power transmission input.

[0023] Furthermore, the hinge rod 101 is an L-shaped block, the upper swing arm 8 is connected to the long end, the rotating shaft 104 is installed at the short end, and the transmission shaft 105 is installed at the bend in the middle section.

[0024] Furthermore, the transmission gear 107 is key-connected to the rotating shaft 104 , and the fixed gear 106 is key-connected to the transmission shaft 105 .

[0025] The fourth embodiment of the present invention combines the above embodiments and includes a front and rear running wheel assemblies 1 and 4 mounted on either side of a vehicle frame 2. A power shaft 3 drives the parallelogram-shaped swing of a connecting rod mechanism. The power shaft 3 is mounted on a bearing seat 6. A lower swing link 5 is mounted at the end of the power shaft 3. The lower swing link 5 is connected to the center of an upper swing link 8 via a shaft and key. Oil-free bushings are installed at both ends of the upper swing link 8 as rotary hinges, which are connected to hinge rods 101 on both sides via a hinge shaft. Thus, the rotation of the power shaft 3 drives the swing of the hinge rods 101 on both sides.

[0026] The first bearing 103 and the second bearing 103 are installed on the two holes at the upper and lower parts of the corresponding rocker arm. The second bearing 103 is equipped with a rotating shaft 104. The rotating shaft 104 is equipped with a transmission gear 107 through a key connection, and a running wheel 108 is installed at the end. The corresponding first bearing 103 is equipped with a fixed gear 106 through a transmission shaft 105. One end of the transmission shaft 105 is equipped with a power transmission bevel gear 109 for the linkage of the running wheels in two directions. Here, the transmission shaft 105 is installed on the front bearing seat 110, and the front bearing seat 110 is installed on the frame 2. The power is driven by the transmission bevel gear 109 to drive the rotation of the transmission shaft 105, and the fixed gear 106 on the corresponding shaft rotates, which drives the rotation of the transmission gear 107 through the meshing transmission of the gears. At the same time, the running wheel 108 rotates, that is, walking.

[0027] The swing of the corresponding hinge rod 101 will rotate around the transmission shaft 105 as the center, and at the same time, the fixed gear 106 and the transmission gear 107 will still maintain a meshing state, keeping the walking power transmittable, that is, although the position of the walking wheel changes, it will always maintain meshing through the fixed gear 106 and the transmission gear 107, and rotate around the transmission shaft 105 as the center, so as to always keep the power transmittable.

Claims

1. A wheel mounting structure with variable power continuity, comprising a frame (2), characterized in that: The front and rear sides of the vehicle frame (2) are respectively mounted with a front running wheel assembly (1) and a rear running wheel assembly (4); the rear running wheel assembly (4) and the front running wheel assembly (1) are connected via an upper swing rod (8); a lower swing rod (5) is connected to the middle section of the upper swing rod (8); the lower swing rod (5) is connected to the power shaft (3) and is driven to rotate by the power shaft (3) so that the lower swing rod (5) drives the upper swing rod (8) to move along the rotation axis of the lower swing rod (5); the upper swing rod (8) is rotatably connected to the rear running wheel assembly (4) and the front running wheel assembly (1) via a linkage shaft (7); the front running wheel assembly (1) and the rear running wheel assembly (4) have the same structure.

2. The wheel mounting structure for changing the power continuity as claimed in claim 1, characterized in that: The lower swing rod (5) is mounted at the midpoint of the line connecting the rear running wheel assembly (4) and the front running wheel assembly (1) via a bearing seat (6).

3. The wheel mounting structure for changing the power continuity as claimed in claim 1, characterized in that: The front running wheel assembly (1) is composed of a running wheel (108), which is mounted on a rotating shaft (104). A transmission gear (107) is coaxially mounted on the rotating shaft (104). The transmission gear (107) is meshed with a fixed gear (106). The fixed gear (106) is mounted on a transmission shaft (105). The transmission shaft (105) and the rotating shaft (104) are both mounted on a hinge rod (101). The hinge rod (101) is connected to an upper swing rod (8).

4. The wheel mounting structure for changing the power continuity as claimed in claim 3, characterized in that: The rotating shaft (104) is mounted on the hinge rod (101) via a second bearing (103), the transmission shaft (105) is mounted on the hinge rod (101) via a first bearing (102), the transmission shaft (105) is rotatably mounted on a front bearing seat (110), and the front bearing seat (110) is fixed to the vehicle frame (2).

5. The wheel mounting structure for changing the power continuity as claimed in claim 3, characterized in that: A power transmission bevel gear (109) is fixed to the inner end of the transmission shaft (105) for power transmission input.

6. The wheel mounting structure for changing the power continuity as claimed in claim 3, characterized in that: The hinge rod (101) is an L-shaped block, the upper swing rod (8) is connected to the long end, the rotating shaft (104) is installed at the short end, and the transmission shaft (105) is installed at the bend in the middle section.

7. The wheel mounting structure for changing the power continuity as claimed in claim 3, characterized in that: The transmission gear (107) is key-connected to the rotating shaft (104), and the fixed gear (106) is key-connected to the transmission shaft (105).

Images