Double-pedal device for new energy forklift braking system

Abstract

The utility model discloses a double-pedal device for a new energy forklift braking system. The double-pedal device comprises a bottom plate (1), a right pedal piece (2) and a brake master cylinder (3), the brake master cylinder is mounted on the bottom plate; the right pedal piece is provided with a rotating shaft (21), and the rotating shaft of the right pedal piece is connected and installed on the bottom plate through a pivot. A transmission plate (22) is arranged on a rotating shaft of the right pedal part; a telescopic rod of the brake master cylinder is hinged with the transmission plate of the right pedal part through a shaft pin; the double-pedal device further comprises a left pedal piece (6), the left pedal piece is provided with a rotating shaft, and the rotating shaft of the left pedal piece is connected and installed on the bottom plate through a pivot. A synchronous baffle (61) is fixedly arranged on the rotating shaft of the left pedal part and extends to the side, opposite to the brake master cylinder, of the transmission plate of the right pedal part. The double-pedal device disclosed by the utility model has a brake function implementation form similar to that of a linkage type left and right pedals of a service brake system of the diesel fork lift truck.

Description

Technical Field

[0001] The utility model relates to a forklift braking device, in particular to a double-pedal device used in a braking system of a new energy forklift. Background Art

[0002] At present, the service brake of conventional lithium battery forklifts is in the form of a single pedal brake on the right side.

[0003] The current problem is:

[0004] We are currently in the process of transforming from internal combustion forklifts to electric forklifts. Many users are accustomed to the original internal combustion forklift's linked left and right double pedals of the service brake system, but are not adapted to the right-side single pedal braking form of electric forklifts. Old users are unable to change their operating habits for a while, which can easily lead to misoperation and, in serious cases, cause accidents.

[0005] In addition, some other background technologies (or concepts) involved in the present utility model are further described as follows:

[0006] Linked left and right double pedals of the internal combustion forklift service brake system:

[0007] 1. The left pedal of the service brake system of an internal combustion forklift with mechanical transmission is the clutch pedal, and the right pedal is the brake pedal;

[0008] 2. The left pedal of the hydraulically driven internal combustion forklift's driving brake system is the inching pedal, and the right pedal is the brake pedal. For a mechanically or hydraulically driven internal combustion forklift, whether you step on the left or right pedal, the whole vehicle can be decelerated and braked. Many original internal combustion vehicle users have formed the habit of using both the left and right pedals at the same time. Summary of the invention

[0009] The utility model aims to provide a double-pedal device for a new energy forklift braking system, which has a braking function implementation form similar to the linked left and right double pedals of an internal combustion forklift service braking system.

[0010] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0011] A double-pedal device for a new energy forklift braking system comprises a base plate, a right pedal member and a brake master cylinder; the brake master cylinder is mounted on the base plate, and is used to provide high-pressure brake fluid for implementing braking; the right pedal member has a rotating shaft, and the rotating shaft of the right pedal member is mounted on the base plate through a pivot connection; a transmission plate is provided on the rotating shaft of the right pedal member, and the telescopic rod of the brake master cylinder and the transmission plate of the right pedal member are hinged together through an axle pin; a return limit mechanism is provided between the right pedal member and the base plate; the double-pedal device also comprises a left pedal member, and the left pedal member has a rotating shaft, and the rotating shaft of the left pedal member is mounted on the base plate through a pivot connection; a synchronization baffle is fixedly provided on the rotating shaft of the left pedal member, and the synchronization baffle extends to the side of the transmission plate of the right pedal member that is away from the brake master cylinder.

[0012] Furthermore, the return limit mechanism arranged between the right pedal member and the base plate has a specific implementation structure in the form of: a stopper is fixedly arranged on the right pedal member, and a limit baffle is fixedly arranged on the base plate, the stopper and the limit baffle correspond to each other, and when the right pedal member is released and begins to be lifted and reset, the stopper is blocked by the limit baffle.

[0013] Furthermore, a sensor is provided at the return limit mechanism provided between the right pedal member and the bottom plate.

[0014] Furthermore, the sensor is a contact switch.

[0015] Furthermore, a return limit mechanism is provided between the left pedal member and the bottom plate, and a limit adjustment bolt is provided on the return limit mechanism between the left pedal member and the bottom plate.

[0016] Furthermore, the return limiting mechanism between the right pedal member and the bottom plate is constrained by the return limiting mechanism between the left pedal member and the bottom plate.

[0017] Compared with the prior art, the double-pedal device of the utility model has the following beneficial effects: the double-pedal device of the utility model adds a left pedal member on the basis of the existing right-side single-pedal brake, so that the double-pedal device has a braking function implementation form similar to the linked left and right double pedals of the internal combustion forklift service brake system. The driver can achieve the braking effect regardless of stepping on the right pedal member or the left pedal member. Especially for drivers who are accustomed to operating internal combustion forklifts, they can drive easily without changing their operating habits, which greatly reduces the probability of driver's misoperation and ensures the operating safety of the forklift. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a double-pedal device for a new energy forklift braking system according to the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described below with specific embodiments:

[0020] This embodiment provides a dual-pedal device for a new energy forklift braking system, which has a braking function implementation form similar to the linked left and right dual pedals of an internal combustion forklift service braking system.

[0021] See also Figure 1 The dual-pedal device of this embodiment includes a base plate 1, a right pedal member 2, a master brake cylinder 3, a brake oil cup 4 and a sensor 5.

[0022] The base plate 1 is mounted on the vehicle body at a pedal mounting area in the vehicle compartment.

[0023] The right pedal member 2 is composed of a pedal and a rotating shaft 21 combined together.

[0024] The rotating shaft 21 of the right pedal member 2 is installed on the base plate 1 in a pivot connection manner, and a return spring is also provided for the right pedal member 2. Based on the return spring, when the driver releases the stepped on right pedal member 2, the return spring can force the right pedal member 2 to return to its original position.

[0025] A transmission plate 22 is also fixedly provided on the rotating shaft 21 of the right pedal member 2, and the transmission plate 22 is used to connect the telescopic rod of the brake master cylinder 3. When the rotating shaft 21 rotates, the transmission plate 22 can drive the telescopic rod of the brake master cylinder 3 to perform a telescopic action.

[0026] A return limit mechanism is also provided for the right pedal member 2. Specifically, a stopper 23 is fixedly provided on the right pedal member 2. Corresponding to the stopper 23 on the right pedal member 2, a limit baffle 24 is fixedly provided on the base plate 1. When the right pedal member 2 is released, under the action of the return spring, the right pedal member 2 begins to lift and reset until the stopper 23 of the right pedal member 2 is blocked by the limit baffle 24, and the right pedal member 2 is limited to the normal original lifting angle position; that is, the combination of the stopper 23 and the limit baffle 24 constitutes the return limit mechanism.

[0027] In addition, a sensor 5 is provided for the right pedal member 2 , and the sensor 5 is specifically used to sense the action of the right pedal member 2 being stepped on and released.

[0028] The sensor 5 is substantially a contact switch having one contact. The sensor 5 is arranged at the return limit mechanism of the right pedal member 2 .

[0029] Specifically, the body of the sensor 5 is fixedly mounted on the limit stopper 24 of the bottom plate 1, and the contact of the sensor 5 is facing the direction of the stopper 23 of the right pedal member 2. When the right pedal member 2 is stepped on, the stopper 23 of the right pedal member 2 is separated from the contact of the sensor 5, and the sensor 5 can detect the stepped state of the right pedal member 2; on the contrary, when the right pedal member 2 is released, the stopper 23 of the right pedal member 2 touches the contact of the sensor 5, and the sensor 5 can detect the released state of the right pedal member 2.

[0030] The master brake cylinder 3 is mounted on the base plate 1 via a bracket. As mentioned above, the telescopic rod of the master brake cylinder 3 is connected to the transmission plate 22 of the right pedal member 2 via an axle pin hinge.

[0031] In addition, the oil outlet pipe 31 of the brake master cylinder 3 is connected to the brake cylinder inside the driving axle body of the forklift through an oil guide pipeline. After the high-pressure brake fluid output by the oil outlet pipe 31 of the brake master cylinder 3 reaches the brake cylinder, it can drive the brake cylinder to drive the brake drum and shoe to rub against each other, thereby achieving a braking effect.

[0032] A brake oil cup 4 is also provided for the brake master cylinder 3 , and the brake oil cup 4 is specifically used to provide brake fluid to the brake master cylinder 3 .

[0033] When the right pedal 2 is stepped on by the driver, the rotating shaft 21 of the right pedal 2 rotates accordingly, and the transmission plate 22 on the rotating shaft 21 drives the telescopic rod of the brake master cylinder 3 to be compressed downward, thereby pumping the brake fluid in the brake master cylinder 3 to the brake sub-cylinder inside the driving axle body of the forklift, thereby producing a braking effect.

[0034] The above-mentioned device structures are all related to the prior art, and the specific details of the structures are common knowledge known to those skilled in the art, so they will not be described in detail.

[0035] The innovative parts of this implementation are introduced below:

[0036] The most important innovation of the double-pedal device of this embodiment is that another pedal member, namely, a left pedal member 6 is provided in the double-pedal device.

[0037] The main structure of the left pedal member 6 is basically the same as that of the right pedal member 2, and is also composed of a pedal and a rotating shaft. The rotating shaft 21 is installed on the base plate 1 in a pivot connection manner, and the rotating shaft 21 of the right pedal member 2 is installed coaxially with the rotating shaft 21 of the left pedal member 6; a return spring is also provided for the left pedal member 6, a transmission plate is also provided on the left pedal member 6, and a return limit mechanism is also provided for the left pedal member 6.

[0038] The structure of the left pedal member 6 is the same as that of the right pedal member 2, and the difference between the two is that the function of the transmission plate is different.

[0039] A transverse plate is fixedly connected to the transmission plate of the left pedal member 6 by welding. For the convenience of description, the plate is called a synchronous baffle 61. The synchronous baffle 61 extends from the transmission plate of the left pedal member 6 to the side of the transmission plate 22 of the right pedal member 2 facing away from the master brake cylinder 3. In this way, when the left pedal member 6 is stepped on, the synchronous baffle 61 can press against the transmission plate 22 of the right pedal member 2 to apply thrust, forcing the rotating shaft 21 of the right pedal member 2 to rotate together with the rotating shaft of the left pedal member 6, and the direction of rotation is consistent with the direction of rotation of the rotating shaft 21 of the right pedal member 2 when the right pedal member 2 is stepped on. The transmission plate 22 of the right pedal member 2 drives the telescopic rod of the master brake cylinder 3 to compress downward, just like the right pedal member 2 is stepped on to produce a braking effect.

[0040] It should be noted that the rotating shaft 21 of the right pedal member 2 and the rotating shaft of the left pedal member 6 are assembled based on the same axis, but the two are independent of each other. If the driving effect of the synchronous baffle 61 is not considered, the rotation actions of the two are independent of each other.

[0041] In addition, a limit adjustment bolt 62 is provided on the return limit mechanism between the left pedal member 6 and the base plate 1 , and the limit adjustment bolt 62 is used to adjust the return position of the left pedal member 6 .

[0042] It should be noted that, since the transmission plate 22 is against the synchronization baffle 61, the return position of the right pedal member 2 is subject to the return position of the left pedal member 6, or in other words, the "return limit mechanism between the right pedal member 2 and the base plate 1" is subject to the "return limit mechanism between the left pedal member 6 and the base plate 1", and the return position of the right pedal member 2 and the return position of the left pedal member 6 both depend on the adjustment position of the limit adjustment bolt 62.

[0043] The double pedal device of this embodiment is provided with a left pedal member 6 on the basis of the existing right single pedal brake, so that the double pedal device has a braking function realization form similar to the linked left and right double pedals of the internal combustion forklift service brake system, and the driver can achieve the braking effect regardless of stepping on the right pedal member 2 or the left pedal member 6. Especially for the driver who is used to operating the internal combustion forklift, it is easy to drive without changing the operating habits, which greatly reduces the probability of the driver's misoperation and ensures the operation safety of the forklift.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double pedal device for a new energy forklift braking system, comprising a base plate (1), a right pedal member (2) and a brake master cylinder (3); the brake master cylinder (3) is mounted on the base plate (1), and the brake master cylinder (3) is used to provide high-pressure brake fluid for implementing braking; the right pedal member (2) has a rotating shaft (21), and the rotating shaft (21) of the right pedal member (2) is mounted on the base plate (1) through a pivot connection; a transmission plate (22) is arranged on the rotating shaft (21) of the right pedal member (2), and the telescopic rod of the brake master cylinder (3) and the transmission plate (22) of the right pedal member (2) are hingedly connected together through an axle pin; a return limit mechanism is arranged between the right pedal member (2) and the base plate (1); Features: The double-pedal device further comprises a left pedal member (6), wherein the left pedal member (6) has a rotating shaft, and the rotating shaft of the left pedal member (6) is mounted on the base plate (1) via a pivot connection; A synchronous baffle (61) is fixedly arranged on the rotating shaft of the left pedal member (6), and the synchronous baffle (61) extends to the side of the transmission plate (22) of the right pedal member (2) that faces away from the brake master cylinder (3).

2. The double pedal device for a new energy forklift braking system according to claim 1, characterized in that: The return limit mechanism is arranged between the right pedal member (2) and the bottom plate (1), and its specific implementation structure is as follows: a stopper (23) is fixedly arranged on the right pedal member (2), and a limit stopper (24) is fixedly arranged on the bottom plate (1); the stopper (23) and the limit stopper (24) correspond to each other, and when the right pedal member (2) is released and starts to be lifted and reset, the stopper (23) is blocked by the limit stopper (24).

3. The double pedal device for a new energy forklift braking system according to claim 1, characterized in that: A sensor (5) is provided at the return limit mechanism provided between the right pedal member (2) and the base plate (1).

4. The double pedal device for a new energy forklift braking system according to claim 3 is characterized in that: The sensor (5) is a contact switch.

5. The double pedal device for a new energy forklift braking system according to claim 1, characterized in that: A return limit mechanism is provided between the left pedal member (6) and the bottom plate (1), and a limit adjustment bolt (62) is provided on the return limit mechanism between the left pedal member (6) and the bottom plate (1).

6. The double pedal device for a new energy forklift braking system according to claim 5, characterized in that: The return limit mechanism between the right pedal member (2) and the bottom plate (1) is subject to the return limit mechanism between the left pedal member (6) and the bottom plate (1).

Images