A driving brake linkage mechanism for electric forklift

Abstract

The utility model discloses a driving brake linkage mechanism for an electric forklift, comprising a fixed seat, a rotating shaft installed in the fixed seat, torsion springs fixed at both ends of the rotating shaft, a brake connecting rod fixed at the upper end of one side of the rotating shaft, a brake pedal connected to one end of the brake connecting rod, a brake cable fixed at the bottom end of the other side of the rotating shaft, and an electric push rod installed on one side wall of the fixed seat. The beneficial effect is that the utility model sets an electric push rod, a guide block, a film pressure sensor and a guide wheel. During the use of the brake linkage mechanism, the film pressure sensor monitors the pressure applied to it by the brake cable in real time. When the pressure value is detected to be reduced, the monitoring signal is transmitted to the main control board. The main control board controls the action of the electric push rod to drive the guide block to move. During the movement, the tension of the brake cable is re-adjusted, thereby ensuring that it is always at a suitable tension, ensuring its braking effect and braking performance.

Description

Technical Field

[0001] The utility model relates to the technical field of electric forklift brake mechanisms, in particular to a driving brake linkage mechanism for an electric forklift. Background Art

[0002] Electric forklifts are mainly designed for handling goods in warehouses. Except for a few forklifts (such as manual pallet forklifts) that are powered by manpower, the others are driven by electric motors. They are widely used in the warehousing industry because of their compact body, flexible movement, light weight and good environmental performance. Electric forklifts need to use brake mechanisms to brake during driving.

[0003] The existing electric forklift driving brake linkage mechanism applies external force to the brake pedal during use, so that the brake pedal drives the rotating shaft to rotate through the brake connecting rod, and then the brake cable drives the brake to work, so as to achieve braking of the electric forklift during driving. For example, patent No. CN201320840622.6 discloses a three-point electric forklift brake linkage mechanism that adopts this linkage mechanism. During use of this linkage mechanism, the brake cable will produce fatigue, which will cause the tightness of the brake cable to decrease, and then affect the braking response time, resulting in lower braking performance and increased safety hazards. Therefore, there is an urgent need for an electric forklift driving brake linkage mechanism to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is aimed at the current status of the existing technology. Now a brake response block and an electric forklift driving brake linkage mechanism with good braking effect are provided, which can monitor the tightness of the brake cable in real time and adjust it to ensure that it is always in a suitable tightening state.

[0006] (II) Technical solution

[0007] The utility model is achieved through the following technical scheme: the utility model proposes an electric forklift driving brake linkage mechanism, including a fixed seat, a rotating shaft is installed in the fixed seat, torsion springs are fixed at both ends of the rotating shaft, a brake connecting rod is fixed to the upper end of one side of the rotating shaft, one end of the brake connecting rod is connected to a brake pedal, a brake cable is fixed to the bottom end of the other side of the rotating shaft, an electric push rod is installed on one side wall of the fixed seat, a guide block is installed on the movable end of the electric push rod, a guide cavity is opened in the guide block, two groups of guide wheels are symmetrically installed in the guide cavity, and a film pressure sensor is arranged on the outer wall of the guide wheel located below.

[0008] Furthermore, the rotating shaft is rotatably connected to the fixing seat, and the torsion spring is fixed at both ends of the rotating shaft and fixedly connected to the inner wall of the fixing seat.

[0009] By adopting the above technical solution, the rotating shaft can rotate under the action of external force, and the torsion spring can reset the rotating shaft when the external force disappears.

[0010] Furthermore, one end of the brake link is connected to the rotating shaft via a screw, the brake link passes through a side wall of the fixing seat, and the other end of the brake link is connected to the brake pedal via a bolt.

[0011] By adopting the above technical solution, the driver applies pressure to the brake pedal, thereby causing the brake pedal to drive the rotating shaft to rotate through the brake connecting rod.

[0012] Furthermore, one end of the brake cable is fixed on the rotating shaft, the brake cable passes through the other side wall of the fixing seat, and the other end of the brake cable is connected to the brake.

[0013] By adopting the above technical solution, the rotating shaft drives the brake cable to move, so that the brake cable controls the brake to work and perform braking.

[0014] Furthermore, the fixing portion of the electric push rod is mounted on the fixing seat by means of screws, and the movable end of the electric push rod is connected to the guide block by means of screws.

[0015] By adopting the above technical solution, the electric push rod can adjust the height of the guide block.

[0016] Furthermore, the guide cavity is formed on the guide block, and the guide wheel is rotatably installed in the guide cavity.

[0017] By adopting the above technical solution, the guide wheel in the guide cavity can guide the movement of the brake cable.

[0018] Furthermore, the film pressure sensor is bonded to the guide wheel below, and the electric push rod and the film pressure sensor are electrically connected to a main control board in the electric forklift.

[0019] By adopting the above technical solution, during the use of the brake linkage mechanism, the film pressure sensor monitors the pressure applied to it by the brake cable in real time. When it is detected that the pressure value decreases, the monitoring signal is transmitted to the main control board. The main control board controls the action of the electric push rod to drive the guide block to move. During the movement, the tension of the brake cable is readjusted to ensure that it is always at an appropriate tension, thereby ensuring its braking effect and braking performance.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] In order to solve the problem that the existing electric forklift driving brake linkage mechanism applies external force through the brake pedal to drive the rotating shaft to rotate through the brake connecting rod during use, and then the brake cable drives the brake to work, so as to achieve the braking of the electric forklift during driving. For example, the patent number CN201320840622.6 discloses a three-point electric forklift brake linkage mechanism that adopts this linkage mechanism. During the use of this linkage mechanism, the brake cable will produce fatigue, which will cause the tightness of the brake cable to decrease, thereby affecting the response time of the brake, resulting in low braking performance and increasing safety hazards. The utility model is provided with an electric push rod, a guide block, a film pressure sensor and a guide wheel. During the use of the brake linkage mechanism, the film pressure sensor monitors the pressure applied to it by the brake cable in real time. When the pressure value is detected to be reduced, the monitoring signal is transmitted to the main control board. The main control board controls the action of the electric push rod to drive the guide block to move. During the movement, the tension of the brake cable is re-adjusted, thereby ensuring that it is always at a suitable tension, ensuring its braking effect and braking performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a driving brake linkage mechanism of an electric forklift described in the utility model;

[0024] Figure 2 It is a main sectional view of a guide block in a driving brake linkage mechanism of an electric forklift described in the utility model;

[0025] Figure 3 It is a main sectional view of a fixing seat in a driving brake linkage mechanism of an electric forklift described in the utility model.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Brake pedal; 2. Brake connecting rod; 3. Guide block; 4. Electric push rod; 5. Brake cable; 6. Fixed seat; 7. Thin film pressure sensor; 8. Guide wheel; 9. Guide cavity; 10. Rotating shaft; 11. Torsion spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] like Figure 1-Figure 3As shown, an electric forklift driving brake linkage mechanism in this embodiment includes a fixed seat 6, a rotating shaft 10 is installed in the fixed seat 6, and torsion springs 11 are fixed at both ends of the rotating shaft 10. The rotating shaft 10 can rotate under the action of external force, and the torsion spring 11 can reset the rotating shaft 10 when the external force disappears. A brake link 2 is fixed to the upper end of one side of the rotating shaft 10, and a brake pedal 1 is connected to one end of the brake link 2. The driver applies pressure to the brake pedal 1, thereby driving the rotating shaft 10 to rotate through the brake link 2. A brake cable 5 is fixed to the bottom end of the other side of the rotating shaft 10, and the rotating shaft 10 drives the brake cable 5 to move, thereby causing the brake cable 5 to control the brake to work, so that it brakes. An electric push rod 4 is installed on one side wall of the fixed seat 6, and the electric push rod 4 can push the guide block 3 The height can be adjusted. A guide block 3 is installed on the movable end of the electric push rod 4, and a guide cavity 9 is opened in the guide block 3. Two sets of guide wheels 8 are symmetrically installed in the guide cavity 9. The guide wheels 8 in the guide cavity 9 can guide the movement of the brake cable 5. A film pressure sensor 7 is arranged on the outer wall of the guide wheel 8 located below. During the use of the brake linkage mechanism, the film pressure sensor 7 monitors the pressure applied by the brake cable 5 on it in real time. When the pressure value is detected to be reduced, the monitoring signal is transmitted to the main control board. The main control board controls the action of the electric push rod 4 to drive the guide block 3 to move. During the movement, the tension of the brake cable 5 is readjusted to ensure that it is always at an appropriate tension, thereby ensuring its braking effect and braking performance.

[0030] like Figure 1-Figure 3 As shown, in this embodiment, the rotating shaft 10 is rotatably connected to the fixed seat 6, the torsion spring 11 is fixed at both ends of the rotating shaft 10 and fixedly connected to the inner wall of the fixed seat 6, one end of the brake link 2 is connected to the rotating shaft 10 by a screw, the brake link 2 passes through one side wall of the fixed seat 6, the other end of the brake link 2 is connected to the brake pedal 1 by a bolt, one end of the brake cable 5 is fixed on the rotating shaft 10, the brake cable 5 passes through the other side wall of the fixed seat 6, and the other end of the brake cable 5 is connected to the brake.

[0031] like Figure 1-Figure 3 As shown, in this embodiment, the fixed part of the electric push rod 4 is installed on the fixing seat 6 by screws, the movable end of the electric push rod 4 is connected to the guide block 3 by screws, the guide cavity 9 is formed on the guide block 3, the guide wheel 8 is rotatably installed in the guide cavity 9, the film pressure sensor 7 is bonded to the guide wheel 8 below, and the electric push rod 4 and the film pressure sensor 7 are electrically connected to the main control board in the electric forklift.

[0032] The specific implementation process of this embodiment is as follows: first, the mechanism is installed and the brake cable 5 is connected to the brake. During the driving of the electric forklift, the driver applies pressure to the brake pedal 1, which drives the rotating shaft 10 to rotate through the brake connecting rod 2, and the rotating shaft 10 drives the brake cable 5 to move, so that the brake cable 5 controls the operation of the brake to brake. During the movement of the brake cable 5, the guide wheel 8 guides it. After the braking is completed, the torsion spring 11 can reset the rotating shaft 10 when the external force disappears. During the use of the brake linkage mechanism, the film pressure sensor 7 monitors the pressure applied by the brake cable 5 in real time. When the pressure value is detected to be reduced, the monitoring signal is transmitted to the main control board. The main control board controls the electric push rod 4 to move, so that it drives the guide block 3 to move. During the movement, the tension of the brake cable 5 is readjusted to ensure that it is always at an appropriate tension, thereby ensuring its braking effect and braking performance.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A service brake linkage mechanism for an electric forklift, characterized in that: The invention comprises a fixed seat (6), a rotating shaft (10) is installed in the fixed seat (6), torsion springs (11) are fixed at both ends of the rotating shaft (10), a brake connecting rod (2) is fixed at the upper end of one side of the rotating shaft (10), one end of the brake connecting rod (2) is connected to a brake pedal (1), a brake cable (5) is fixed at the bottom end of the other side of the rotating shaft (10), an electric push rod (4) is installed on one side wall of the fixed seat (6), a guide block (3) is installed on the movable end of the electric push rod (4), a guide cavity (9) is opened in the guide block (3), two groups of guide wheels (8) are symmetrically installed in the guide cavity (9), and a film pressure sensor (7) is arranged on the outer wall of the guide wheel (8) located at the bottom.

2. The electric forklift service brake linkage mechanism according to claim 1, characterized in that: The rotating shaft (10) is rotatably connected to the fixing seat (6), and the torsion spring (11) is fixed to both ends of the rotating shaft (10) and fixedly connected to the inner wall of the fixing seat (6).

3. The electric forklift service brake linkage mechanism according to claim 1, characterized in that: One end of the brake link (2) is connected to the rotating shaft (10) by means of a screw, the brake link (2) passes through a side wall of the fixing seat (6), and the other end of the brake link (2) is connected to the brake pedal (1) by means of a bolt.

4. The electric forklift service brake linkage mechanism according to claim 1, characterized in that: One end of the brake cable (5) is fixed on the rotating shaft (10), the brake cable (5) passes through the other side wall of the fixing seat (6), and the other end of the brake cable (5) is connected to the brake.

5. The electric forklift service brake linkage mechanism according to claim 4, characterized in that: The fixing portion of the electric push rod (4) is mounted on the fixing seat (6) via screws, and the movable end of the electric push rod (4) is connected to the guide block (3) via screws.

6. The service brake linkage mechanism of an electric forklift according to claim 5, characterized in that: The guide cavity (9) is formed on the guide block (3), and the guide wheel (8) is rotatably mounted in the guide cavity (9).

7. The electric forklift service brake linkage mechanism according to claim 6, characterized in that: The film-type pressure sensor (7) is bonded to the guide wheel (8) below, and the electric push rod (4) and the film-type pressure sensor (7) are electrically connected to a main control panel in the electric forklift.

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