Damping wheel structure of a trolley

Abstract

This utility model relates to the field of handcart technology and discloses a shock-absorbing wheel structure for a handcart, comprising: a base plate with a limiting groove at its bottom, the limiting groove being equidistant from each other around its circumference; a first buffer portion disposed at the bottom of the base plate; a second buffer portion disposed at the bottom of the base plate; and a push handle fixedly connected to the top of the base plate. The first buffer portion includes: an arc-shaped sliding block slidably connected inside the limiting groove; and a damper fixedly connected to the bottom of the base plate. When the moving wheel slides up and down, the sliding seat slides along the trajectory of the limiting frame under the transmission of the connecting plate. However, when the sliding seat slides outward, the friction coefficient between the friction pad and the inner wall of the limiting frame is relatively large, thus slowing down the sliding seat and achieving the purpose of buffering the moving wheel. Furthermore, under the action of the second spring, the sliding seat is easily retracted.

Description

Technical Field

[0001] This utility model relates to the field of handcart technology, specifically to a shock-absorbing wheel structure for a handcart. Background Technology

[0002] A handcart is a type of transport vehicle that is pushed or pulled by human power. It is widely used in production and daily life and comes in many types and features. Its structure is diverse. Some handcarts are box-shaped, suitable for transporting lightweight items that are easy to load and unload; some have extended brackets to facilitate the placement of parts such as rods, axles, and pipes; some have a shape that perfectly matches the goods, such as gas cylinder carts; some are very compact and foldable for easy carrying; and some have two flat steel bars forming a low ramp on the body to facilitate the loading and unloading of cylindrical goods such as barrels of liquids and paper rolls, such as cylindrical goods loading and unloading carts.

[0003] Currently, most handcarts on the market use rigid connections for their wheels, with almost no cushioning mechanisms. When using these handcarts to transport goods, especially fragile items or precision instruments that are extremely sensitive to vibration, the problem becomes apparent. During movement, even the slightest unevenness on the road surface will cause vibrations to be transmitted directly to the goods without any cushioning. Utility Model Content

[0004] The purpose of this utility model is to provide a shock-absorbing wheel structure for a handcart, which solves the technical problem that most handcarts on the market use rigid connection for the bottom wheels and have almost no buffer mechanism, thus achieving the purpose of multiple buffering for the handcart.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shock-absorbing wheel structure for a handcart, comprising: a base plate, wherein a limiting groove is formed at the bottom of the base plate and the limiting groove is equidistantly arranged around the circumference; a first buffer portion disposed at the bottom of the base plate; a second buffer portion disposed at the bottom of the base plate; and a push handle fixedly connected to the top of the base plate; wherein the first buffer portion comprises: an arc-shaped sliding block slidably connected inside the limiting groove; and a damper fixedly connected to the bottom of the base plate.

[0006] Preferably, a transmission plate is fixedly connected to the bottom of the arc-shaped sliding block, a fixed disk is fixedly connected to the bottom of the transmission plate, a fixed seat is rotatably connected to the bottom of the fixed disk, and a moving wheel is rotatably connected between the inner sides of the fixed seat. A buffer pad is fixedly connected to the output end of the damper. The buffer pad is adapted to the fixed disk. Through the transmission of the fixed seat, the fixed disk, and the transmission plate, the arc-shaped sliding block slides vertically along the trajectory of the limiting groove, thereby causing the top of the fixed disk to squeeze the buffer pad. At the same time, combined with the action of the damper and the spring, a multi-stage buffer and shock absorption system is formed.

[0007] Preferably, a spring is provided between the fixed plate and the base plate, with one end of the spring fixedly connected to the top of the fixed plate and the other end of the spring fixedly connected to the bottom of the base plate.

[0008] Preferably, the second buffer portion includes: a limiting frame, fixedly connected to the bottom of the base plate, the limiting frame being equidistant from each other around the circumference; and a connecting seat, fixedly connected to the top of the fixed plate, the connecting seat being equidistant from each other around the circumference.

[0009] Preferably, a sliding seat is slidably connected between the inner sides of the limiting frame, and a connecting plate is provided between the sliding seat and the connecting seat. One end of the connecting plate is rotatably connected to the outer wall of the sliding seat, and the other end of the connecting plate is rotatably connected to the outer wall of the connecting seat.

[0010] Preferably, a second spring is provided between the sliding seat and the limiting frame. One end of the second spring is fixedly connected to one side of the sliding seat, and the other end of the second spring is fixedly connected to one side of the inner wall of the limiting frame. The second spring stores energy when sliding outward, and automatically releases energy after the external force disappears, pushing the sliding seat to quickly retract along the trajectory of the limiting frame.

[0011] Preferably, a fixed frame is fixedly connected to one side of the sliding seat. The fixed frames are symmetrically arranged, and a placement groove is opened on one side of the fixed frame. A friction pad is fixedly connected inside the placement groove. The outer wall of the friction pad is adapted to the inner wall of the limiting frame. Through the high friction coefficient friction pad between the sliding seat and the inner wall of the limiting frame, dynamic resistance is formed when sliding outward, which effectively absorbs the impact energy generated by the up and down sliding of the moving wheel and avoids rigid collisions from damaging the equipment or workpiece.

[0012] This utility model provides a shock-absorbing wheel structure for a handcart. It has the following beneficial effects:

[0013] (1) When the moving wheel is moving, due to the undulation of the roadside, the arc-shaped sliding block slides vertically along the trajectory of the limiting groove under the transmission of the fixed seat, fixed plate and transmission plate, so that the top of the fixed plate squeezes the buffer pad, and under the action of the damper, the moving wheel is buffered, and at the same time, under the action of the spring, a certain degree of shock absorption is achieved.

[0014] (2) When the moving wheel slides up and down, the sliding seat slides along the trajectory of the limiting frame under the transmission of the connecting plate. However, when the sliding seat slides outward, the friction coefficient between the friction pad and the inner wall of the limiting frame is large, thereby reducing the sliding speed of the sliding seat and thus buffering the moving wheel. However, under the action of the second spring, the sliding seat can slide back. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a front view of the present utility model;

[0017] Figure 3 This is a view of the first buffer section of the present invention;

[0018] Figure 4 This is a view of the second buffer section of the present invention;

[0019] Figure 5 This is a detailed view of the second buffer section of this utility model.

[0020] In the diagram: 1. Base plate; 2. First buffer section; 3. Second buffer section; 4. Push handle.

[0021] 211 Arc-shaped sliding block, 212 Transmission plate, 213 Fixed plate, 214 Fixed seat, 215 Moving wheel, 216 Spring 1, 217 Damper, 218 Buffer pad;

[0022] 311 Limit frame, 312 Sliding seat, 313 Connecting seat, 314 Connecting plate, 315 Spring II, 316 Fixing frame, 317 Friction pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0025] Based on the existing technology where most handcarts on the market use rigidly connected wheels with almost no cushioning mechanism, this utility model provides a preferred embodiment of a shock-absorbing wheel structure for handcarts, for example... Figure 1-5As shown: A shock-absorbing wheel structure for a handcart includes: a base plate 1, with a limiting groove formed at the bottom of the base plate 1, the limiting groove being equidistant from each other around the circumference; a first buffer part 2 disposed at the bottom of the base plate 1; a second buffer part 3 disposed at the bottom of the base plate 1; and a push handle 4 fixedly connected to the top of the base plate 1; wherein the first buffer part 2 includes: an arc-shaped sliding block 211 slidably connected inside the limiting groove; and a damper 217 fixedly connected to the bottom of the base plate 1.

[0026] A transmission plate 212 is fixedly connected to the bottom of the arc-shaped sliding block 211. A fixed disk 213 is fixedly connected to the bottom of the transmission plate 212. A fixed seat 214 is rotatably connected to the bottom of the fixed disk 213. A moving wheel 215 is rotatably connected between the inner sides of the fixed seat 214. A buffer pad 218 is fixedly connected to the output end of the damper 217. The buffer pad 218 is compatible with the fixed disk 213.

[0027] A spring 216 is provided between the fixed plate 213 and the base plate 1. One end of the spring 216 is fixedly connected to the top of the fixed plate 213, and the other end of the spring 216 is fixedly connected to the bottom of the base plate 1.

[0028] Furthermore, in this embodiment, when the moving wheel 215 is moving, due to the undulations of the roadside, the arc-shaped sliding block 211 slides vertically along the trajectory of the limiting groove under the transmission of the fixed seat 214, the fixed plate 213, and the transmission plate 212. This causes the top of the fixed plate 213 to press against the buffer pad 218, and under the action of the damper 217, the moving wheel 215 is buffered. At the same time, under the action of the spring 216, a certain degree of shock absorption is achieved. Example

[0029] Based on Embodiment 1, a preferred embodiment of the shock-absorbing wheel structure for a handcart provided by this utility model is as follows: Figure 1-5 As shown: The second buffer part 3 includes: a limiting frame 311, which is fixedly connected to the bottom of the base plate 1, and the limiting frame 311 is equidistantly arranged around its circumference; and a connecting seat 313, which is fixedly connected to the top of the fixed plate 213, and the connecting seat 313 is equidistantly arranged around its circumference.

[0030] A sliding seat 312 is slidably connected between the inner sides of the limiting frame 311. A connecting plate 314 is provided between the sliding seat 312 and the connecting seat 313. One end of the connecting plate 314 is rotatably connected to the outer wall of the sliding seat 312, and the other end of the connecting plate 314 is rotatably connected to the outer wall of the connecting seat 313.

[0031] A second spring 315 is provided between the sliding seat 312 and the limiting frame 311. One end of the second spring 315 is fixedly connected to one side of the sliding seat 312, and the other end of the second spring 315 is fixedly connected to one side of the inner wall of the limiting frame 311.

[0032] A fixed frame 316 is fixedly connected to one side of the sliding seat 312. The fixed frames 316 are symmetrically arranged. A placement groove is opened on one side of the fixed frame 316. A friction pad 317 is fixedly connected inside the placement groove. The outer wall of the friction pad 317 is adapted to the inner wall of the limiting frame 311.

[0033] Furthermore, in this embodiment, when the moving wheel 215 slides up and down, the sliding seat 312 slides along the trajectory of the limiting frame 311 under the transmission of the connecting plate 314. However, when the sliding seat 312 slides outward, the friction coefficient between the friction pad 317 and the inner wall of the limiting frame 311 is relatively large, thereby reducing the sliding speed of the sliding seat 312 and thus buffering the moving wheel 215. However, under the action of the spring 315, the sliding seat 312 can easily slide back.

[0034] In use, firstly, when the moving wheel 215 moves, due to the unevenness of the roadside, the arc-shaped sliding block 211 slides vertically along the trajectory of the limiting groove under the transmission of the fixed seat 214, fixed plate 213, and transmission plate 212. This causes the top of the fixed plate 213 to press against the buffer pad 218, and under the action of the damper 217, the moving wheel 215 is buffered. At the same time, under the action of the first spring 216, a certain degree of shock absorption is achieved. Secondly, when the moving wheel 215 slides up and down, the sliding seat 312 slides along the trajectory of the limiting frame 311 under the transmission of the connecting plate 314. However, when the sliding seat 312 slides outward, due to the large coefficient of friction between the friction pad 317 and the inner wall of the limiting frame 311, the sliding seat 312 is decelerated, thereby achieving the purpose of buffering the moving wheel 215. However, under the action of the second spring 315, the sliding seat 312 can slide back.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shock-absorbing wheel structure for a handcart, characterized in that, It includes: a base plate (1), wherein a limiting groove is provided at the bottom of the base plate (1), and the limiting groove is equidistant from each other around the circumference; The first buffer section (2) is located at the bottom of the base plate (1); The second buffer section (3) is provided at the bottom of the base plate (1); The push handle (4) is fixedly connected to the top of the base plate (1); The first buffer portion (2) includes: The arc-shaped sliding block (211) is slidably connected inside the limiting groove; The damper (217) is fixedly connected to the bottom of the base plate (1).

2. The shock-absorbing wheel structure of a handcart according to claim 1, characterized in that: The bottom of the arc-shaped sliding block (211) is fixedly connected to a transmission plate (212), the bottom of the transmission plate (212) is fixedly connected to a fixed disk (213), the bottom of the fixed disk (213) is rotatably connected to a fixed seat (214), the inner sides of the fixed seat (214) are rotatably connected to a moving wheel (215), the output end of the damper (217) is fixedly connected to a buffer pad (218), and the buffer pad (218) is adapted to the fixed disk (213).

3. The shock-absorbing wheel structure of a handcart according to claim 2, characterized in that: A spring (216) is provided between the fixed plate (213) and the base plate (1). One end of the spring (216) is fixedly connected to the top of the fixed plate (213), and the other end of the spring (216) is fixedly connected to the bottom of the base plate (1).

4. The shock-absorbing wheel structure of a handcart according to claim 1, characterized in that: The second buffer section (3) includes: The limiting frame (311) is fixedly connected to the bottom of the base plate (1), and the limiting frame (311) is equidistant from each other around its circumference; The connecting seat (313) is fixedly connected to the top of the fixed plate (213), and the connecting seat (313) is equidistantly arranged around its circumference.

5. The shock-absorbing wheel structure of a handcart according to claim 4, characterized in that: A sliding seat (312) is slidably connected between the inner sides of the limiting frame (311). A connecting plate (314) is provided between the sliding seat (312) and the connecting seat (313). One end of the connecting plate (314) is rotatably connected to the outer wall of the sliding seat (312), and the other end of the connecting plate (314) is rotatably connected to the outer wall of the connecting seat (313).

6. The shock-absorbing wheel structure of a handcart according to claim 5, characterized in that: A second spring (315) is provided between the sliding seat (312) and the limiting frame (311). One end of the second spring (315) is fixedly connected to one side of the sliding seat (312), and the other end of the second spring (315) is fixedly connected to one side of the inner wall of the limiting frame (311).

7. The shock-absorbing wheel structure of a handcart according to claim 5, characterized in that: A fixed frame (316) is fixedly connected to one side of the sliding seat (312). The fixed frames (316) are symmetrically arranged. A placement groove is opened on one side of the fixed frame (316). A friction pad (317) is fixedly connected inside the placement groove. The outer wall of the friction pad (317) is adapted to the inner wall of the limiting frame (311).

Images