A forklift parking brake device

Abstract

The utility model belongs to the technical field of fork truck, specifically discloses a fork truck parking brake device, including the brake pull rod between the electric push rod, brake, brake pull rod is connected with electric push rod between pull rod assembly, pull rod assembly is hinged with electric push rod, brake pull rod includes the sleeve and the movable inside the cable of setting in the sleeve, both ends of cable all stretch out sleeve respectively with pull rod assembly, brake connection, the top of sleeve is connected with the fixed frame that is fixed on the instrument frame panel. This application selects electric push rod to drive brake pull rod action, and the operation personnel is convenient through brake button one -key operation brake pull rod action, realizes the brake or loosening of fork truck, and the operation is simple. The top of sleeve is fixed on the fixed frame, so that the sleeve can play the better protection to the cable, avoids its abrasion.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to a forklift parking brake device. Background Technology

[0002] With the increasingly widespread application of forklifts in the engineering field, they have become an indispensable part of freeing up people's hands for labor. Customers' demands for the overall performance, safety, and convenience of forklifts are also growing. The parking brake system is a key device to ensure safe parking and prevent accidental movement. Currently, most forklifts use mechanical parking brakes, which include a steel cable connecting the control lever and the brake. The cable is driven by the manual control lever, thereby mechanically locking the transmission system or wheels to achieve braking. This mechanical structure has the advantages of low cost and intuitive design; however, because the two ends of the steel cable are directly connected to the control lever and brake, long-term operation can lead to wear and tear on the connecting parts, resulting in brake failure or excessive braking force. Utility Model Content

[0003] Based on the above-mentioned technical problems, this utility model proposes a forklift parking brake device.

[0004] The specific technical solution of this utility model is as follows: A forklift parking brake device includes a brake lever connected between an electric push rod and a brake. A lever assembly is connected between the brake lever and the electric push rod, and the lever assembly is hinged to the electric push rod. The brake lever includes a sleeve and a cable movably disposed inside the sleeve. Both ends of the cable extend out of the sleeve and are respectively connected to the lever assembly and the brake. The top end of the sleeve is connected to a fixed bracket fixed on an instrument panel.

[0005] In a further embodiment, the pull rod assembly includes a connecting rod hinged to an electric push rod, with a cable hanger fixed at the bottom end of the connecting rod, and the top end of the pull cable connected to the cable hanger.

[0006] In a further embodiment, a limiting cap is fixedly provided at the top of the cable, and the limiting cap is located above the cable hanger for limiting the position; a lower connector connected to the brake is fixedly provided at the bottom of the cable.

[0007] In a further embodiment, the mounting bracket includes a vertically connected mounting plate and a fixing plate. The mounting plate is fixedly mounted on the instrument panel, and the fixing plate has a mounting hole for passing through the brake lever. The top end of the sleeve is located in the mounting hole and is fixed with fasteners.

[0008] In a further embodiment, a fixing head is fixedly provided on the outer periphery of the top end of the sleeve, and the fixing head is fixedly connected to the fixing plate by fasteners.

[0009] In a further embodiment, the electric push rod includes a drive motor, a screw connected to the output shaft of the drive motor, the screw being threadedly connected to a nut fixed to the push rod body, and also includes a limiting component or limiting cavity to restrict the rotation of the nut; the operation of the drive motor enables the push rod body to move linearly.

[0010] This application selects an electric actuator to drive the brake lever, allowing operators to easily brake or release the forklift with a single button press. It also enables integration with the forklift's existing electronic control system, enhancing overall vehicle safety and ease of operation.

[0011] The mounting bracket of this application is fixedly installed on the instrument panel, which improves the stability of the entire device; in addition, fixing the top end of the sleeve to the mounting bracket allows the sleeve to better protect the cable and prevent it from wearing out. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation of the braking device of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram showing the connection between the tie rod assembly, the fixing frame, and the cable in this utility model; Figure 4 This is a schematic diagram of the cable structure in this utility model.

[0013] In the diagram: 1. Instrument panel; 2. Electric push rod; 3. Pull rod assembly; 31. Connecting rod; 32. Cable hanger; 4. Fixing bracket; 41. Mounting plate; 42. Fixing plate; 5. Brake pull rod; 51. Limit cap; 52. Cable; 53. Sleeve; 54. Lower connector; 55. Fixing head; 6. Braking device. Detailed Implementation

[0014] 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.

[0015] refer to Figure 1-4This embodiment provides a forklift parking brake device, including a brake lever 5 connected between an electric push rod 2 and a brake. A lever assembly 3 connects the brake lever 5 and the electric push rod 2, and the lever assembly 3 is hinged to the electric push rod 2. Specifically, the lever assembly 3 and the electric push rod 2 can be connected by a pin, so that when the electric push rod 2 moves, it can drive the lever assembly 3 to move synchronously. The brake lever 5 includes a sleeve 53 and a cable 52 movably housed inside the sleeve. Both ends of the cable extend out of the sleeve and are connected to the lever assembly 3 and the brake, respectively. The top end of the sleeve 53 is connected to a fixing bracket 4 fixed on the instrument panel 1.

[0016] The electric push rod described in this application is a commonly used device on forklifts. It includes a drive motor and a screw connected to the output shaft of the drive motor. The screw is threadedly connected to a nut fixed to the push rod body. It also includes a limiting component or limiting cavity to restrict the rotation of the nut. When the drive motor operates, it drives the screw to rotate within the nut, causing the nut to move the push rod body in a linear motion, either upwards or downwards. The push rod body is hinged to the pull rod assembly 3, and the push rod body moves up and down with the pull cable via the pull rod assembly 3, thus braking or releasing the brake. The power switch for the drive motor is located on the instrument panel 1, allowing the operator to easily control the forward / reverse rotation or stop of the drive motor with a single button. Preferably, the drive motor can be a DC motor or a brushless motor, and the output end of the motor is connected to a reducer to reduce the motor speed and improve control accuracy.

[0017] When the electric push rod 2 is activated, it drives the connecting rod 31 in the pull rod assembly 3 to move upward. The connecting rod 31 is welded and fixed to the cable holder 32. The cable holder 32 then drives the top end of the cable 52 in the brake pull rod 5 to move upward synchronously. Since the mounting plate 41 in the fixing bracket 4 is fixed to the instrument panel 1, and the lower end of the fixing plate 42 is fixed to the sleeve 53 by fastener nuts, the cable 52 generates an upward pulling force. When the electric push rod 2 moves to its highest limit, the pulling force of the cable 52 reaches its maximum, thereby driving the brake to activate and brake the forklift. Similarly, when it is necessary to release the parking brake, the electric push rod 2 starts to rotate in the opposite direction, causing the above-mentioned components to move downward, and the cable 52 releases the vehicle brake.

[0018] Furthermore, the forklift parking brake is connected to and driven by an electric actuator, allowing the actuator's movement to be controlled via a brake button (i.e., the power switch for the drive motor). When the vehicle needs to be brought to a complete stop on the road, the driver can use the brake button to operate the forklift parking brake, thus controlling the vehicle's braking. When the vehicle needs to be restarted, the brake can be released again via the brake button, restoring the vehicle's freedom of movement. This eliminates the inconvenience of traditional mechanical handbrakes and improves the comfort of parking the vehicle for the customer.

[0019] like Figure 2 , 3 As shown, the pull rod assembly 3 includes a connecting rod 31 hinged to the electric push rod 2. Specifically, the pull rod assembly 3 and the electric push rod 2 can be connected by a pin. When the electric push rod 2 moves, it can drive the pull rod assembly 3 to move synchronously. A cable hanger 32 is fixedly provided at the bottom end of the connecting rod 31, and the top end of the cable 52 is connected to the cable hanger 32.

[0020] Specifically, a limiting cap 51 is fixedly provided at the top of the cable 52, and the limiting cap is located above the cable hanger 32 for limiting the position; a lower connector 54 connected to the brake is fixedly provided at the bottom of the cable.

[0021] When the pull rod assembly 3 moves upward, it acts on the limit cap 51 and pulls the cable 52 upward; when the pull rod assembly 3 moves downward, there is no upward pulling force on the limit cap 51, so the brake lever relaxes and returns to its original position, that is, the brake is released and the brake is released.

[0022] In a further embodiment, the mounting bracket 4 includes a vertically connected mounting plate 41 and a fixing plate 42. The mounting plate is fixedly mounted on the instrument panel 1, and the fixing plate has a mounting hole for the brake lever 5 to pass through. The top end of the sleeve 53 is located in the mounting hole and is fixed with fasteners.

[0023] In a further embodiment, a fixing head 55 is fixedly provided on the outer periphery of the top end of the sleeve 53, and the fixing head 55 is fixedly connected to the fixing plate 42 by fasteners. In this embodiment, the fasteners are preferably fixing bolts.

[0024] In this application, the mounting bracket 4 is fixedly installed on the instrument panel 1 to fix the top end of the sleeve 53, thereby enabling the sleeve 53 to better protect the cable 52 and prevent it from wearing out.

[0025] like Figure 1 As shown, the braking device 6 of this application is installed on the instrument panel 1 of the forklift and can be operated by a brake button that controls the movement of the electric push rod 2. The brake button is also located on the instrument panel 1.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0027] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A forklift parking brake device, comprising a brake lever (5) connected between an electric push rod (2) and a brake, characterized in that: A pull rod assembly (3) is connected between the brake lever (5) and the electric push rod (2), and the pull rod assembly (3) is hinged to the electric push rod (2); the brake lever (5) includes a sleeve (53) and a pull cable (52) that is movably installed inside the sleeve, and both ends of the pull cable extend out of the sleeve and are connected to the pull rod assembly (3) and the brake respectively; the top end of the sleeve (53) is connected to a fixed bracket (4) fixed on the instrument panel (1).

2. The forklift parking brake device according to claim 1, characterized in that: The pull rod assembly (3) includes a connecting rod (31) hinged to the electric push rod (2), with a hanging frame (32) fixed at the bottom end of the connecting rod (31), and the top end of the cable (52) connected to the hanging frame (32).

3. A forklift parking brake device according to claim 2, characterized in that: The top end of the cable (52) is fixed with a limiting cap (51), which is located above the hanging frame (32) for limiting the position; the bottom end of the cable is fixed with a lower connector (54) connected to the brake.

4. A forklift parking brake device according to claim 1, characterized in that: The mounting bracket (4) includes a vertically connected mounting plate (41) and a fixing plate (42). The mounting plate is fixedly installed on the instrument panel (1). The fixing plate has a mounting hole for passing through the brake lever (5). The top end of the sleeve (53) is located in the mounting hole and is fixed with fasteners.

5. A forklift parking brake device according to claim 4, characterized in that: A fixing head (55) is fixedly provided on the outer periphery of the top end of the sleeve (53), and the fixing head (55) is fixedly connected to the fixing plate (42) by fasteners.

6. A forklift parking brake device according to claim 1, characterized in that: The electric push rod (2) includes a drive motor and a screw connected to the output shaft of the drive motor. The screw is threadedly connected to a nut fixed on the push rod body. It also includes a limiting member or limiting cavity to limit the rotation of the nut. The drive motor works to make the push rod body move linearly.

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