A type of transport vehicle chassis

Abstract

This utility model discloses a transport vehicle chassis, which includes a chassis body. A groove is formed in the middle of the chassis body, and a recess is formed on one side of the chassis body located in the groove. An adjustment component is arranged in the groove and the recess. The adjustment component includes a motor, a first bevel gear, a second bevel gear, a fixing plate, and a positive and negative lead screw. The motor is fixedly installed in the recess, and the output end of the motor is connected to the first bevel gear through a coupling. Two fixing plates are fixedly installed in the middle of the groove, and a positive and negative lead screw is rotatably installed in the two fixing plates. A second bevel gear is fixedly installed in the middle of the positive and negative lead screw. By setting the adjustment component, the width of the chassis can be adjusted, thereby driving the adjustment of the wheel track distance. This allows the transport vehicle to have good flexibility in narrow spaces and can adapt to various complex road conditions and the needs of transporting goods of different widths, greatly improving the space utilization efficiency and working condition adaptability of the chassis.

Description

Technical Field

[0001] This utility model relates to the field of transportation vehicle technology, and in particular to a transport vehicle chassis. Background Technology

[0002] In industrial production, logistics warehousing, and commercial distribution, material handling vehicles are the core equipment for material transfer, and their chassis performance directly determines their operating efficiency, safety, and scope of application.

[0003] The existing pallet truck chassis still have the following problems:

[0004] 1. The wheel track of some pallet truck chassis is mostly fixed and cannot be adjusted. This makes it difficult for the pallet truck to have good flexibility in narrow spaces and cannot adapt to various complex road conditions and the needs of transporting goods of different widths, thus reducing the space utilization efficiency and working condition adaptability of the chassis.

[0005] 2. The casters on some pallet truck chassis are mostly rigidly connected, with weak vertical and horizontal cushioning capabilities. When parking or loading and unloading goods, if there are slight bumps or depressions on the ground, the impact is directly transmitted to the chassis and goods, which can easily cause the goods to shake, shift, or even be damaged, especially for fragile items or precision equipment. Utility Model Content

[0006] The purpose of this utility model is to provide a transport vehicle chassis that solves the problems of existing transport vehicle chassis having fixed wheel tracks that cannot be adjusted, which prevents the transport vehicle from having good flexibility in narrow spaces, and the fact that the universal wheels of transport vehicle chassis are mostly rigidly connected, resulting in weak vertical and horizontal buffering capabilities.

[0007] To achieve the above objectives, a pallet truck chassis is provided, including a chassis body. A push rod is fixedly installed at the upper end of the chassis body, and a mounting box is fixedly installed at the bottom middle of the chassis body. A cylinder is fixedly installed at the top of the mounting box, and a support plate is fixedly installed at the extended end of the cylinder. A sliding groove is formed in the middle of the chassis body, and a recess is formed on one side of the chassis body located in the sliding groove. An adjustment component is provided in the sliding groove and the recess.

[0008] The adjustment assembly includes a motor, bevel gear one, bevel gear two, a fixed plate, and a positive and negative lead screw. The motor is fixedly installed in the groove, and the output end of the motor is connected to bevel gear one through a coupling. Two fixed plates are fixedly installed in the middle of the slide groove, and positive and negative lead screws are rotatably installed in the two fixed plates. Bevel gear two is fixedly installed in the middle of the positive and negative lead screws, and bevel gear two meshes with bevel gear one.

[0009] According to the aforementioned transport vehicle chassis, two fixing blocks are symmetrically installed on the positive and negative lead screws, and both fixing blocks are slidably installed in the slide groove.

[0010] According to the aforementioned transport vehicle chassis, two stops are fixedly installed at both ends of the positive and negative lead screws, and both stops are slidably installed within two fixed blocks.

[0011] According to the aforementioned transport vehicle chassis, two support blocks are fixedly installed at one end of each of the two fixed blocks, and an annular groove is provided at the bottom of each of the two support blocks.

[0012] According to the aforementioned transport vehicle chassis, a fixed column is fixedly installed at the bottom of each annular groove, and a sliding groove is provided on both sides of each annular groove.

[0013] According to the aforementioned transport vehicle chassis, each of the sliding grooves has a sliding column slidably installed inside, and each of the sliding columns has a sliding groove 2.

[0014] According to the aforementioned transport vehicle chassis, spring 2 is fixedly installed at the bottom of each of the annular grooves, spring 2 is sleeved on a fixed post, and the other end of spring 2 is fixedly installed on a sliding post 1.

[0015] According to the aforementioned transport vehicle chassis, the fixed columns are all slidably installed in the sliding groove of the sliding column, and a spring is fixedly installed at the bottom of the sliding column. The other end of the spring is fixedly installed at the bottom of the fixed column, and a caster wheel is provided at the bottom of the sliding column.

[0016] The above-mentioned solution has the following beneficial effects:

[0017] 1. This patent allows for the adjustment of the chassis width during use by setting an adjustment component, thereby adjusting the wheel track distance. This enables the transport vehicle to have good flexibility in narrow spaces and adapt to various complex road conditions and the needs of transporting goods of different widths, greatly improving the space utilization efficiency and working condition adaptability of the chassis.

[0018] 2. This patent, by setting up a sliding groove one, a spring one, an annular groove, a fixed column, a spring two, a sliding groove two, and a sliding column one, can absorb vertical impact force and alleviate horizontal swaying simultaneously through the synergistic design of the double springs and sliding grooves during use. This significantly improves the shock absorption effect of the chassis on rough roads and effectively protects the stability of the cargo. The flexible movement of the sliding column along the fixed column and sliding groove breaks through the limitations of traditional rigid connections, significantly enhancing the ability of the caster wheels to adapt to multi-angle vibrations and broadening the applicable range of working conditions for the chassis.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is an overall schematic diagram of a transport vehicle chassis according to the present invention;

[0022] Figure 2 This is a cross-sectional view of a transport vehicle chassis according to the present invention;

[0023] Figure 3 This is a sectional view of the mounting box of a transport vehicle chassis according to the present invention;

[0024] Figure 4 This utility model relates to a chassis for a transport vehicle. Figure 2 The diagram is shown in Figure A.

[0025] Legend:

[0026] 1. Chassis body; 2. Push rod; 3. Sliding column one; 4. Universal wheel; 5. Support block; 6. Fixing block; 7. Slide groove; 8. Stop block; 9. Bevel gear one; 10. Motor; 11. Bevel gear two; 12. Groove; 13. Fixing plate; 14. Positive and negative lead screws; 15. Mounting box; 16. Cylinder; 17. Support plate; 18. Sliding groove one; 19. Spring one; 20. Annular groove; 21. Fixing column; 22. Spring two; 23. Sliding groove two. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] Reference Figure 1-4This utility model discloses a transport vehicle chassis, comprising a chassis body 1. A push rod 2 is fixedly installed at the upper end of the chassis body 1. A mounting box 15 is fixedly installed at the middle of the bottom of the chassis body 1. A cylinder 16 is fixedly installed at the top of the mounting box 15. A support plate 17 is fixedly installed at the extended end of the cylinder 16. A sliding groove 7 is formed in the middle of the chassis body 1. A groove 12 is formed on one side of the chassis body 1 located in the sliding groove 7. An adjustment assembly is provided in the sliding groove 7 and the groove 12. The adjustment assembly includes a motor 10, a first bevel gear 9, a second bevel gear 11, a fixing plate 13, and a positive and negative lead screw 14. The motor 10 is fixedly installed in the groove 12. The output end of the motor 10 is connected to the first bevel gear 9 through a coupling. Two fixed plates 13 are fixedly installed in the middle of the 7. A positive and negative lead screw 14 is rotatably installed in the two fixed plates 13. A bevel gear 11 is fixedly installed in the middle of the positive and negative lead screw 14. The bevel gear 11 meshes with the bevel gear 9. The universal wheel 4 can flexibly turn and move. When it is necessary to adjust the wheel hub distance, the cylinder 16 in the mounting box 15 pushes the support plate 17 to move downward, supporting the chassis body 1. Then the motor 10 in the groove 12 is started. Through the meshing of the bevel gear 9 and the bevel gear 11 in the middle of the positive and negative lead screw 14, the positive and negative lead screw 14 is driven to rotate, so that the two fixed blocks 6 move synchronously in opposite directions along the slide groove 7. Then, the universal wheel 4 is driven by the support block 5 to achieve symmetrical adjustment of the wheel distance.

[0029] Two fixed blocks 6 are symmetrically fitted on the positive and negative lead screw 14. Both fixed blocks 6 are slidably installed in the slide groove 7. Two stop blocks 8 are fixedly installed at both ends of the positive and negative lead screw 14. Both stop blocks 8 are slidably installed in the two fixed blocks 6. Two support blocks 5 are fixedly installed at one end of each of the two fixed blocks 6. An annular groove 20 is opened at the bottom of each of the two support blocks 5. A fixed post 21 is fixedly installed at the bottom of each annular groove 20. A sliding groove 18 is opened on both sides of the annular groove 20. A sliding post 3 is slidably installed in each sliding groove 18. A sliding groove 23 is opened in each sliding post 3. A spring 22 is fixedly installed at the bottom of each annular groove 20. The other end of the spring 22 is fixedly installed on the fixed column 21 and the fixed column 21 is slidably installed in the sliding groove 18 opened in the sliding column 3. The bottom of the sliding column 3 is fixedly installed with the spring 19. The other end of the spring 19 is fixedly installed on the bottom of the fixed column 21. The bottom of the sliding column 3 is provided with a caster 4. The stop block 8 limits the maximum stroke of the fixed block 6. During travel, the caster 4 is connected to the support block 5 through the sliding column 3. When the sliding column 3 slides along the fixed column 21, the spring 19 absorbs the vertical impact force and the spring 22 relieves the horizontal sway. The sliding of the sliding column 3 in the sliding groove 23 enhances the buffering flexibility.

[0030] Working principle: When a pallet truck chassis is put into use, the casters 4 enable flexible steering and movement. When the wheel hub distance needs to be adjusted, the cylinder 16 in the mounting box 15 pushes the support plate 17 downward, supporting the chassis body 1. Then, the motor 10 in the groove 12 is started, and the bevel gear 11 in the middle of the positive and negative lead screw 14 meshes with the first bevel gear 9, driving the positive and negative lead screw 14 to rotate. This causes the two fixed blocks 6 to move synchronously in opposite directions along the slide groove 7, thereby driving the casters 4 to achieve symmetrical wheel distance adjustment through the support block 5. 8. The maximum travel of the fixed block 6 is limited. During travel, the caster 4 is connected to the support block 5 through the sliding column 3. When the sliding column 3 slides along the fixed column 21, the spring 19 absorbs the vertical impact force and the spring 22 relieves the horizontal sway. The sliding of the sliding column 3 in the sliding groove 23 enhances the buffering flexibility. When it is necessary to stop or load / unload goods, the cylinder 16 in the mounting box 15 can be activated to push the support plate 17 down to contact the ground to enhance stability. After the operation is completed, the cylinder 16 retracts and resets. All components work together to take into account flexibility, adaptability and safety.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A transport vehicle chassis, comprising a chassis body (1), characterized in that, A push rod (2) is fixedly installed at the upper end of the chassis body (1), an installation box (15) is fixedly installed at the bottom middle of the chassis body (1), a cylinder (16) is fixedly installed at the top of the installation box (15), a support plate (17) is fixedly installed at the extended end of the cylinder (16), a sliding groove (7) is opened in the middle of the chassis body (1), a groove (12) is opened on one side of the chassis body (1) located in the sliding groove (7), and an adjustment component is provided in the sliding groove (7) and the groove (12); The adjustment assembly includes a motor (10), a first bevel gear (9), a second bevel gear (11), a fixed plate (13), and a forward and reverse lead screw (14). The motor (10) is fixedly installed in the groove (12). The output end of the motor (10) is connected to the first bevel gear (9) through a coupling. Two fixed plates (13) are fixedly installed in the middle of the slide groove (7). The forward and reverse lead screw (14) is rotatably installed in the two fixed plates (13). The second bevel gear (11) is fixedly installed in the middle of the forward and reverse lead screw (14). The second bevel gear (11) meshes with the first bevel gear (9).

2. The transport vehicle chassis according to claim 1, characterized in that, Two fixing blocks (6) are symmetrically installed on the positive and negative lead screws (14), and both fixing blocks (6) are slidably installed in the slide grooves (7).

3. A transport vehicle chassis according to claim 1, characterized in that, Two stops (8) are fixedly installed at both ends of the positive and negative lead screw (14), and both stops (8) are slidably installed in two fixed blocks (6).

4. A transport vehicle chassis according to claim 3, characterized in that, Two support blocks (5) are fixedly installed at one end of each of the two fixed blocks (6), and an annular groove (20) is opened at the bottom of each of the two support blocks (5).

5. A transport vehicle chassis according to claim 4, characterized in that, The bottom of the annular groove (20) is fixedly installed with a fixed column (21), and a sliding groove (18) is opened on both sides of the annular groove (20).

6. A transport vehicle chassis according to claim 5, characterized in that, Each of the sliding grooves (18) is slidably installed with a sliding column (3), and each of the sliding columns (3) is provided with a sliding groove (23).

7. A transport vehicle chassis according to claim 4, characterized in that, Spring 2 (22) is fixedly installed at the bottom of each of the annular grooves (20). Spring 2 (22) is sleeved on the fixed column (21). The other end of spring 2 (22) is fixedly installed on the sliding column 1 (3).

8. A transport vehicle chassis according to claim 5, characterized in that, The fixed columns (21) are all slidably installed in the sliding groove (18) opened in the sliding column (3). A spring (19) is fixedly installed at the bottom of the sliding column (3). The other end of the spring (19) is fixedly installed at the bottom of the fixed column (21). A caster wheel (4) is provided at the bottom of the sliding column (3).

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