A static braking four-wheel trolley

Abstract

The utility model discloses a four -wheel trolley of static braking, it is characterized by including handrail swing piece, handrail, handrail auxiliary rod, spring no.

Description

Technical Field

[0001] This utility model relates to the field of handcart technology, specifically a statically braked four-wheeled handcart. Background Technology

[0002] Handcarts are a common material handling tool widely used in factories, warehouses, shopping malls and other places. Many existing handcarts are prone to moving due to external forces when no one is operating them, which poses certain safety hazards. This is especially true on sloping ground, where items may slip or the handcart may collide with other objects, causing damage.

[0003] To solve this problem, a handcart that can automatically brake when no one is operating it and can be easily released when someone is operating it needs to be designed.

[0004] Therefore, this utility model provides a four-wheeled handcart with static braking to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a statically braked four-wheeled handcart, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A four-wheeled handcart with static braking, characterized in that it comprises a handlebar swing component, a handlebar, a handlebar auxiliary rod, a first spring, an eccentric tie rod, a guide block, a connecting fork, a first swing plate, universal wheels, a long tie rod, a second swing plate, a short tie rod, a second spring, a brake frame, a brake shaft, and directional wheels; the handlebar is connected to the handlebar swing component, the handlebar swing component is connected to the eccentric tie rod, the eccentric tie rod is connected to the first swing plate via the connecting fork, the first swing plate is connected to the long tie rod, the long tie rod is connected to the second swing plate, the second swing plate is connected to the second short tie rod, the short tie rod is connected to the brake frame, and the brake frame is equipped with a brake shaft; there are two universal wheels located near the handlebar at the rear wheel position, and two directional wheels located away from the handlebar at the front wheel position; the second spring is mounted on the directional wheel bracket and associated with the brake frame.

[0007] Preferably, when no one is operating the system, the second spring can push the brake shaft on the brake frame against the directional wheel, so that the two directional wheels are in a braking state.

[0008] Preferred configuration: When someone presses the handrail downwards, the rotation of the handrail swing component can lift the eccentric tie rod, and sequentially drive the first swing plate, the long tie rod, the second swing plate, and the short tie rod to move backwards, thereby causing the brake shaft on the brake frame to disengage from the directional wheel and release the brake on the two directional wheels.

[0009] Preferably, when the handrail is released, the brake shaft on the brake frame resumes braking the two directional wheels under the action of spring two.

[0010] Preferably, it also includes a guide block, through which the eccentric tie rod passes, and the guide block guides the movement of the eccentric tie rod.

[0011] Preferably, it also includes a spring and a handrail auxiliary rod, wherein the handrail auxiliary rod cooperates with the handrail, and the spring plays an auxiliary resetting role during the operation of the handrail.

[0012] Beneficial effects

[0013] This invention provides a four-wheeled handcart with static braking. Compared with the prior art, it has the following advantages:

[0014] 1. This statically braked four-wheeled handcart uses a spring-driven brake shaft to automatically press the directional wheels, achieving static braking when no one is operating it. This effectively prevents the handcart from moving on its own due to external force or ground slope. Compared with traditional handcarts without brakes, it can prevent items from slipping or colliding, which are safety hazards. It is especially suitable for scenarios such as factories and warehouses where there is frequent personnel flow and temporary parking is required, significantly improving the stability and safety during use.

[0015] 2. This statically braked four-wheeled handcart can be released from braking simply by pressing down on the handlebar. Through the linkage of the handlebar swinging component, eccentric tie rod, and other components, the brake can be quickly disengaged. After releasing the handlebar, the spring force automatically restores the brake, requiring no additional operation steps. This "press to release, release to reset" design simplifies the braking switching process, lowers the operating threshold, and is suitable for all types of users. At the same time, the mechanical structure is stable and reliable, reducing maintenance costs and improving the convenience of long-term use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the external structure of this utility model;

[0018] Figure 2 This is a three-dimensional view of the top structure of this utility model.

[0019] In the diagram: 1. Handrail swing component; 2. Handrail; 3. Handrail auxiliary rod; 4. Spring 1; 5. Eccentric tie rod; 6. Guide block; 7. Connecting fork; 8. Swing plate 1; 9. Caster wheel; 10. Long tie rod; 11. Swing plate 2; 12. Short tie rod; 13. Spring 2; 14. Brake frame; 15. Brake shaft; 16. Directional wheel. Detailed Implementation

[0020] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1 to 2 This application provides a statically braked four-wheeled handcart, characterized by comprising a handlebar swing member 1, a handlebar 2, a handlebar auxiliary rod 3, a spring 4, an eccentric tie rod 5, a guide block 6, a connecting fork 7, a swing plate 8, a caster wheel 9, a long tie rod 10, a swing plate 11, a short tie rod 12, a spring 13, a brake frame 14, a brake shaft 15, and a directional wheel 16; the handlebar 2 is connected to the handlebar swing member 1, and the handlebar swing member 1 is connected to the eccentric tie rod 5, which is connected to... The connecting fork 7 is connected to the first swing plate 8, the first swing plate 8 is connected to the long pull rod 10, the long pull rod 10 is connected to the second swing plate 11, the second swing plate 11 is connected to the short pull rod 12, the short pull rod 12 is connected to the brake frame 14, and the brake frame 14 is provided with a brake shaft 15; there are two omnidirectional wheels 9 and they are located near the rear wheel position of the handrail 2, and there are two directional wheels 16 and they are located away from the front wheel position of the handrail 2; the second spring 13 is installed on the bracket of the directional wheel 16 and is associated with the brake frame 14.

[0023] When unattended, spring 13 pushes the brake shaft 15 on the brake frame 14 against the directional wheel 16, putting both directional wheels 16 in a braking state. When someone operates and presses down on the handrail 2, the rotation of the handrail swing member 1 causes the eccentric pull rod 5 to rise, and sequentially drives the swing plate 8, long pull rod 10, swing plate 11 and short pull rod 12 to move backward, thereby causing the brake shaft 15 on the brake frame 14 to disengage from the directional wheel 16, releasing the braking of the two directional wheels 16. When the handrail 2 is released, under the action of spring 13, the brake shaft 15 on the brake frame 14 resumes braking the two directional wheels 16. The handrail also includes a guide block 6, through which the eccentric pull rod 5 passes. The guide block 6 guides the movement of the eccentric pull rod 5. The handrail also includes spring 4 and handrail auxiliary rod 3. The handrail auxiliary rod 3 cooperates with the handrail 2, and spring 4 plays an auxiliary reset role during the operation of the handrail 2.

[0024] In this embodiment, when no one is operating, the second spring 13 pushes the brake shaft 15 on the brake frame 14 to press against the directional wheel 16 to achieve braking and parking. When someone is operating, the handrail 2 is pressed down, the handrail swing member 1 rotates, driving the eccentric tie rod 5 to lift up, and then driving the related components to move in sequence, so that the brake shaft 15 disengages from the directional wheel 16, releasing the brake and facilitating the movement of the handcart. After the handrail 2 is released, under the action of the second spring 13, the brake shaft 15 presses against the directional wheel 16 again to restore the braking state.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] Working principle: 1. Static braking state when no one is operating.

[0027] Spring 13, mounted on the bracket of the directional wheel 16, is in a naturally extended state. Its elastic force pushes the brake frame 14 to move closer to the directional wheel 16. The brake shaft 15 on the brake frame 14 moves synchronously with the brake frame 14 and finally presses against the wheel bodies of the two directional wheels 16. The friction force restricts the rotation of the directional wheels 16. At this time, the two front directional wheels 16 of the handcart are braked, and the rear swivel wheel 9 is simultaneously in a parking state because the front wheels cannot rotate, thus achieving static braking as a whole.

[0028] II. When someone is operating the brake release state

[0029] When the operator presses down on the handrail 2, the handrail 2 causes the handrail swing component 1 to rotate around its rotation axis. When the handrail swing component 1 rotates, it drives the eccentric tie rod 5 to move upward through the eccentric structure. The eccentric tie rod 5 passes through the guide block 6, and the guide block 6 ensures that its movement direction is stable. When the eccentric tie rod 5 is lifted, it pulls the swing plate 8 to swing through the connecting fork 7. The swing plate 8 then drives the long tie rod 10 to move backward. The long tie rod 10 pulls the swing plate 11 to swing, causing the short tie rod 12 to move backward synchronously. The short tie rod 12 pulls the brake frame 14 to move away from the directional wheel 16. The brake shaft 15 on the brake frame 14 moves along with it, disengaging from the directional wheel 16 and releasing the frictional restriction on the directional wheel 16. The handcart can be pushed freely. During this process, the spring 4 is compressed, and the handrail auxiliary rod 3 assists the handrail 2 in maintaining a stable operating posture.

[0030] 3. Release the handrail 2 hours after braking recovery.

[0031] After the operator releases the handrail 2, the compressed spring 4 releases its elasticity, pushing the handrail 2 and the handrail swing component 1 back to their original positions. The return of the handrail swing component 1 causes the eccentric tie rod 5 to move downward, releasing the tension on the subsequent linkage components. The elasticity of the second spring 13 once again dominates the movement of the brake frame 14, pushing the brake frame 14 and the brake shaft 15 to press against the directional wheel 16 again. The brake shaft 15 and the directional wheel 16 contact and press against each other again, and the handcart returns to the static braking state.

[0032] In summary, the entire braking system achieves a cyclical working process of "automatic braking without human intervention, release by pressing handrail 2, and reset by releasing handrail 2" through the elastic force of the spring and the linkage of mechanical components. It has a simple structure and high reliability.

[0033] 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.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-wheeled handcart with static braking, characterized in that, The system includes a handrail swing component (1), a handrail (2), a handrail auxiliary rod (3), a spring (4), an eccentric tie rod (5), a guide block (6), a connecting fork (7), a swing plate (8), a caster wheel (9), a long tie rod (10), a swing plate (2), a short tie rod (12), a spring (2) (13), a brake frame (14), a brake shaft (15), and a directional wheel (16); the handrail (2) is connected to the handrail swing component (1), the handrail swing component (1) is connected to the eccentric tie rod (5), and the eccentric tie rod (5) is connected to the swing plate (1) via the connecting fork (7). 8) Connected, swing plate one (8) is connected to long pull rod (10), long pull rod (10) is connected to swing plate two (11), swing plate two (11) is connected to short pull rod (12), short pull rod (12) is connected to brake frame (14), brake frame (14) is provided with brake shaft (15); there are two universal wheels (9) and they are located at the rear wheel position close to the handrail (2), there are two directional wheels (16) and they are located at the front wheel position far away from the handrail (2); spring two (13) is installed on the bracket of directional wheel (16) and is associated with brake frame (14).

2. A four-wheeled handcart with static braking according to claim 1, characterized in that, When no one is operating, the second spring (13) can push the brake shaft (15) on the brake frame (14) to press against the directional wheel (16), so that the two directional wheels (16) are in a braking state.

3. A four-wheeled handcart with static braking according to claim 1, characterized in that, When someone presses down on the handrail (2), the handrail swing component (1) rotates, which can lift the eccentric tie rod (5) and sequentially drive the swing plate one (8), the long tie rod (10), the swing plate two (11) and the short tie rod (12) to move backward, thereby causing the brake shaft (15) on the brake frame (14) to disengage from the directional wheel (16) and release the brake on the two directional wheels (16).

4. A four-wheeled handcart with static braking according to claim 3, characterized in that, When the handrail (2) is released, the brake shaft (15) on the brake frame (14) resumes braking of the two directional wheels (16) under the action of the second spring (13).

5. A four-wheeled handcart with static braking according to claim 1, characterized in that, It also includes a guide block (6), through which the eccentric tie rod (5) passes, and the guide block (6) guides the movement of the eccentric tie rod (5).

6. A four-wheeled handcart with static braking according to claim 1, characterized in that, It also includes a spring (4) and a handrail auxiliary rod (3), which works in conjunction with the handrail (2), and the spring (4) plays an auxiliary reset role during the operation of the handrail (2).

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