Forklift foot space height adjusting system

Abstract

The utility model relates to the technical field of forklifts, in particular to a forklift foot space height adjusting system which comprises a pedal plate arranged in a foot operation space, an electric push rod used for adjusting the height of the pedal plate is arranged below one side of the bottom of the pedal plate, and the electric push rod comprises a telescopic end and a motor. And the power supply access end of the motor is connected with an adjusting device. During use, the electric push rod and the pedal plate are arranged in the foot operation space, and when the motor of the electric push rod is electrified, the output end of the motor is controlled by the adjusting device to drive the telescopic end of the electric push rod to stretch and retract up and down, so that the telescopic end drives the pedal plate to move synchronously; therefore, the height of the pedal in the foot operation space is adjusted, a driver can adjust the bottom height of the foot operation space according to the height and the body shape of the driver, the comfort of the driver is improved, driving fatigue is relieved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a system for adjusting the height of a forklift foot space. Background Art

[0002] In the current logistics, warehousing and manufacturing industries, forklifts are an indispensable material handling equipment. Their operating efficiency and driver comfort are directly related to the smoothness and efficiency of the entire workflow. However, an often overlooked but crucial factor is the individual differences among forklift drivers, especially differences in height and body shape.

[0003] When different drivers drive the same forklift, their demands for foot space will vary significantly due to their different heights and body shapes. This difference is particularly evident on forklifts with fixed foot space structures. For taller drivers, if the foot space is too narrow, it will not only affect their driving comfort, but may also cause their feet to be in an unnatural posture for a long time, increasing driving fatigue, and thus affecting work efficiency and safety; while for shorter drivers, if the foot space is too large, their feet may not be able to effectively contact the pedals, making driving operations difficult and also increasing driving fatigue. This poor driving experience and driving fatigue caused by inappropriate foot space will not only affect the driver's working state, but may also have a negative impact on the working environment and the company's operating efficiency.

[0004] In view of this, we propose a height adjustment system for the foot space of a forklift. Utility Model Content

[0005] The purpose of the utility model is to provide a system for adjusting the height of the foot space of a forklift to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A forklift foot space height adjustment system includes a foot pedal arranged in the foot operating space, an electric push rod for adjusting the height of the foot pedal is arranged below one side of the bottom of the foot pedal, the electric push rod includes a telescopic end and a motor, the telescopic end of the electric push rod is internally threadedly connected to a push rod, an end of the push rod away from the telescopic end of the electric push rod and an output shaft of the motor are both fixed with rotating gears, a transmission gear is meshed between the two rotating gears, and an adjustment device is connected to the power supply access end of the motor, and the adjustment device is used to control the motor to rotate forward and reverse, so that the motor drives the telescopic end of the electric push rod to move up and down.

[0008] As a further solution of the utility model: a sleeve is provided at the lower part of the side of the foot pedal away from the electric push rod, and a column is fixed at the bottom of the foot pedal. The column is inserted into the sleeve to limit the moving direction of the foot pedal. A movably connected spring is provided on the outer side of the column, one end of the spring is against the bottom of the foot pedal, and the other end of the spring is against the top of the sleeve.

[0009] As a further solution of the utility model: a fixing opening is opened on the surface of the foot pedal, the telescopic end of the electric push rod is fixed to the fixing opening of the foot pedal by bolts, a limiting plate is fixed on the side of the foot pedal away from the fixing opening, and a safety pedal is provided on the top of the foot pedal close to the limiting plate.

[0010] As a further solution of the utility model: the regulating device includes a self-resetting three-speed switch, the self-resetting three-speed switch is connected to a power supply module, the power supply module includes a DCDC converter, and the K5 and K6 contacts of the self-resetting three-speed switch are respectively connected to the positive and negative poles of the DCDC converter power supply;

[0011] The K1 and K3 contacts of the self-resetting three-speed switch are connected in parallel to the positive pole of the motor, and the K2 and K4 contacts of the self-resetting three-speed switch are connected in parallel to the negative pole of the motor, wherein the K1 contact is connected in series with a normally closed rising proximity switch, and the K2 contact is connected in series with a normally closed falling proximity switch.

[0012] As a further solution of the utility model: the DCDC converter is connected to an instrument and a vehicle controller, the A3, A4 and A5 terminals of the vehicle controller are connected to a potentiometer, and the pull rod of the potentiometer is fixed to the bottom of the pedal.

[0013] As a further solution of the utility model: the potentiometer outputs a corresponding voltage V according to the displacement signal Y of the telescopic end of the electric push rod, and the output voltage V of the potentiometer is transmitted from the vehicle controller to the instrument through the CAN bus for real-time display.

[0014] As a further solution of the utility model: the DCDC converter is also connected to a BMS controller, the BMS controller is connected to a discharge contactor, the contacts of the discharge contactor are connected to a main contactor, and the discharge contactor and the main contactor are used for the DCDC converter to connect the instrument, the vehicle controller and the self-resetting three-speed switch.

[0015] As a further solution of the utility model: the DCDC converter is connected to a starting module, the starting module includes a fuse, an emergency power-off switch and a key switch, the positive pole of the DCDC converter power supply is connected in series with the fuse, the emergency power-off switch and the key switch in sequence, and the key switch is used for the DCDC converter to connect the instrument, the vehicle controller and the BMS controller.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the height adjustment system of the foot space of the forklift, an electric push rod and a foot pedal are arranged in the foot operating space. When the motor of the electric push rod is powered on, the output end of the motor is controlled by the adjustment device to drive the telescopic end of the electric push rod to move up and down, so that the telescopic end drives the foot pedal to move synchronously, thereby adjusting the height of the foot pedal in the foot operating space, so that the driver can adjust the bottom height of the foot operating space according to his own height and body shape, thereby increasing the driver's comfort, reducing driving fatigue, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is a schematic diagram of the footrest structure in this application;

[0020] Figure 3 This is a front view of the footrest structure in this application;

[0021] Figure 4 This is a side view of the footrest structure in this application;

[0022] Figure 5 This is a schematic diagram of the motor power supply of the electric push rod in this application;

[0023] Figure 6 This is the power-on principle diagram of the three-speed switch for the electric push rod to rise and reset in this application;

[0024] Figure 7 This is the power-on principle diagram of the three-speed switch for the electric push rod to descend and reset in this application;

[0025] Figure 8 This is a schematic diagram of the power-on principle of the self-resetting three-speed switch when the electric push rod is not working in this application.

[0026] The meaning of each number in the figure is:

[0027] 100, electric push rod; 101, casing;

[0028] 200, foot pedal; 201, fixing port; 202, plug column; 203, spring; 204, limit plate; 205, safety pedal;

[0029] 300, power supply module; 301, discharge contactor; 302, BMS controller; 303, DCDC converter; 310, start module; 311, fuse; 312, emergency power-off switch; 313, key switch; 314, main contactor; 320, instrument; 330, vehicle controller; 340, potentiometer; 350, self-resetting three-speed switch; 351, rising proximity switch; 352, falling proximity switch; 360, motor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1 As shown, the present embodiment provides a system for adjusting the height of a forklift foot space, comprising a foot pedal 200 arranged in the foot operating space, an electric push rod 100 for adjusting the height of the foot pedal 200 is arranged below one side of the bottom of the foot pedal 200, the electric push rod 100 comprises a telescopic end and a motor 360, the telescopic end of the electric push rod 100 is internally threadedly connected with a push rod, the end of the push rod away from the telescopic end of the electric push rod 100 and the output shaft of the motor 360 are both fixed with rotating gears, a transmission gear is meshed between the two rotating gears, an adjusting device is connected to the power supply access end of the motor 360, the adjusting device is used to control the motor 360 to rotate forward and reverse, so that the motor 360 drives the telescopic end of the electric push rod 100 to move up and down, and the electric push rod 100 of the present embodiment uses a 10cm stroke and a 24V voltage electric push rod 100.

[0032] The improvement of this embodiment lies in that an electric push rod 100 and a foot pedal 200 are arranged in the foot operating space. When the motor 360 of the electric push rod 100 is powered on, the output end of the motor 360 is controlled by an adjusting device to drive the telescopic end of the electric push rod 100 to move up and down, so that the telescopic end drives the foot pedal 200 to move synchronously, thereby adjusting the height of the foot pedal 200 in the foot operating space, so that the driver can adjust the bottom height of the foot operating space according to his own height and body shape, thereby increasing the driver's comfort, reducing driving fatigue, and improving work efficiency.

[0033] like Figure 2As shown, considering the fixation between the telescopic end of the electric push rod 100 and the foot pedal 200, a fixing opening 201 is opened on the surface of the foot pedal 200, and the telescopic end of the electric push rod 100 is fixed to the fixing opening 201 of the foot pedal 200 by bolts, thereby connecting the telescopic end of the electric push rod 100 and the foot pedal 200 into a whole.

[0034] like Figure 1 and Figure 3 As shown, considering that after the telescopic end of the electric push rod 100 is fixed to the foot pedal 200, when the driver's foot is placed on the foot pedal 200, the foot pedal 200 is tilted and the foot pedal 200 is unstable as a whole. Therefore, a sleeve 101 is welded below the side of the foot pedal 200 away from the electric push rod 100, and a plug column 202 is fixed at the bottom of the foot pedal 200. The plug column 202 is inserted into the sleeve 101 to limit the moving direction of the foot pedal 200. The length of the sleeve 101 is consistent with the height when the telescopic end of the electric push rod 100 drops to the lowest end. A movably connected spring 203 is provided on the outside of the plug column 202, one end of the spring 203 is against the bottom of the foot pedal 200, and the other end of the spring 203 is against the top of the sleeve 101. The rigidity of the spring 203 is used to achieve auxiliary support for the other end of the foot pedal 200, and cooperate with the telescopic end of the electric push rod 100 to increase the stability of the foot pedal 200.

[0035] like Figure 4 As shown, in consideration of the protection of the foot operating space, a limiting plate 204 is fixed on the side of the foot pedal 200 away from the fixing port 201, and the side wall of the foot operating space is protected by the limiting plate 204 to reduce scratches on the side wall of the foot operating space during the up and down movement of the foot pedal 200. A safety pedal 205 is fixedly provided on the top of the foot pedal 200 close to the limiting plate 204. The safety pedal 205 can effectively regulate the driver's operating specifications, and stipulates that the driver must put his feet on the safety pedal 205 when operating. If not, the entire vehicle is not allowed to move. At the same time, the instrument 320 in the cockpit displays prompts to effectively remind operating safety.

[0036] like Figure 5As shown, the circuit principle of the motor 360 driven by the regulating device and the electric push rod 100 is introduced. The regulating device includes a self-resetting three-speed switch 350, and the self-resetting three-speed switch 350 is connected to the power supply module 300. The power supply module 300 includes a DCDC converter 303. The K5 and K6 contacts of the self-resetting three-speed switch 350 are respectively connected to the positive and negative poles of the power supply of the DCDC converter 303; the K1 and K3 contacts of the self-resetting three-speed switch 350 are connected in parallel to the positive pole of the motor 360, and the K2 and K4 contacts of the self-resetting three-speed switch 350 are connected in parallel to the negative pole of the motor 360, wherein the K1 contact is connected in series with a normally closed rising proximity switch 351, and the K2 contact is connected in series with a normally closed falling proximity switch 352.

[0037] like Figure 8 As shown, when the self-resetting three-speed switch 350 is not operated, the contacts K5 and K6 in the self-resetting three-speed switch 350 are suspended, no connection operation is performed, the circuit is in an open circuit state, the motor 360 is not powered, and the electric push rod 100 does not perform any operation;

[0038] like Figure 6 As shown, when the self-resetting three-speed switch 350 is pressed upward, the contacts K1 and K5 as well as the contacts K4 and K6 are closed, and the positive power current of the DCDC converter 303 passes through the K5 contact, the K1 contact and the rising proximity switch 351 in sequence, and flows to the positive pole of the motor 360, and then passes through the K4 contact and the K6 contact from the negative pole of the motor 360 in sequence, and flows to the negative power current of the DCDC converter 303, and the motor 360 rotates forward, thereby driving the telescopic end of the electric push rod 100 to move upward.

[0039] like Figure 7 As shown, when the self-resetting three-speed switch 350 is pressed downward, the contacts K2 and K5 as well as the contacts K3 and K6 are closed, and the positive power current of the DCDC converter 303 passes through the K5 contact, the K2 contact and the descending proximity switch 352 in sequence, and flows to the negative pole of the motor 360, and then flows from the positive pole of the motor 360 through the K3 contact and the K6 contact to the negative power current of the DCDC converter 303, and the motor 360 reverses, thereby driving the telescopic end of the electric push rod 100 to move downward.

[0040] In consideration of real-time monitoring of the telescopic end stroke of the electric push rod 100, to avoid the situation where the driver is unaware and still adjusts the telescopic end of the electric push rod 100 after reaching the longest and shortest distances, causing damage to the electric push rod 100, the DCDC converter 303 power supply is connected in parallel with the instrument 320 and the vehicle controller 330, one side of the potentiometer 340 is provided with three pins, and the other side of the potentiometer 340 is provided with a pull rod, the three pins of the potentiometer 340 are respectively connected to the A3, A4 and A5 terminals of the vehicle controller 330, the pull rod of the potentiometer 340 is fixed to the bottom of the pedal 200, the potentiometer 340 outputs a corresponding voltage V according to the change of the displacement signal Y caused by the movement of the telescopic end of the electric push rod 100 driven by the motor 360, the displacement signal Y of the telescopic end of the electric push rod 100=the output voltage V of the potentiometer 340, the output voltage V of the potentiometer 340 is output by the vehicle controller 330 through CA The N bus is transmitted to the instrument 320 for real-time display. In this embodiment, the output voltage signal of the potentiometer 340 is 0-10V, corresponding to the telescopic end stroke Y of the electric push rod 100 is 0-10cm, and the vehicle controller 330 can calculate the actual position of the telescopic end of the electric push rod 100 according to Y=V. The icon of the instrument 320 is divided into ten grids to represent the position height of the telescopic end of the electric push rod 100. When the potentiometer 340 signal is 0-0.5V and 9.5-10V, that is, when the telescopic end position Y of the electric push rod 100 is 0-0.5cm and 9.5-10cm, the vehicle controller 330 will send an end-in-place fault reminder signal to the instrument 320 through the CAN bus, so that the lowest first grid and the highest tenth grid will turn red and flash to increase the conspicuousness of the reminder. At the same time, the normally closed rising proximity switch 351 and the normally closed descending proximity switch 352 will automatically disconnect, so that the circuit is in an open circuit state.

[0041] Considering the protection of the vehicle circuit, the DCDC converter 303 power supply is connected in series with a start module 310, which includes a fuse 311, an emergency power-off switch 312 and a key switch 313 connected in sequence to the positive pole of the DCDC converter 303 power supply. The DCDC converter 303 is also connected to the BMS controller 302. The positive pole of the DCDC converter 303 power supply outputs a 24V voltage flow which passes through the fuse 311, the emergency power-off switch 312 and the key switch 313 in sequence, and flows from the key switch 313 to the control C port of the DCDC converter 303, the instrument 320 and the KEY port of the vehicle controller 330 respectively. The control C port of the DCDC converter 303 The C port outputs a 12V voltage to power the BMS controller 302. The BMS controller 302, the instrument 320 and the vehicle controller 330 are powered on for self-test. The BMS controller 302 is connected in series with the discharge contactor 301, and the contacts of the discharge contactor 301 are connected in series with the main contactor 314. After the BMS controller 302, the instrument 320 and the vehicle controller 330 are powered on for self-test, the BMS controller 302 energizes the coil of the discharge contactor 301 to close the contacts of the discharge contactor 301, and the vehicle controller 330 energizes the coil of the main contactor 314 to close the contacts of the main contactor 314, thereby connecting the instrument 320, the vehicle controller 330 and the self-resetting three-speed switch 350.

[0042] In the above embodiment, the adjustment steps of the forklift foot space height adjustment system are as follows:

[0043] S1, turn the key switch 313 to start the forklift and make the forklift power on for self-test;

[0044] S2. According to one's own needs, the user selects to operate the self-resetting three-speed switch 350, so that the self-resetting three-speed switch 350 controls the motor 360 to rotate forward and reverse, thereby driving the telescopic end of the electric push rod 100 to move up and down, thereby driving the foot pedal 200 to move synchronously, thereby achieving height adjustment of the foot pedal 200;

[0045] S3. The lifting position of the electric push rod 100 is determined by observing the icon information on the instrument 320. When the electric push rod 100 reaches the highest or lowest position, the instrument 320 gives a fault warning signal.

[0046] The operation of the self-resetting three-speed switch 350 is divided into three types:

[0047] S2.a. Press the self-reset third-speed switch 350 upward, the motor 360 rotates forward, driving the telescopic end of the electric push rod 100 to move upward, thereby driving the foot pedal 200 to rise;

[0048] S2.b, press the self-reset third-speed switch 350 downward, the motor 360 reverses, drives the telescopic end of the electric push rod 100 to move downward, and then drives the foot pedal 200 to lower;

[0049] S2.c, the self-resetting third-speed switch 350 is not pressed, the motor 360 does not work, and the telescopic end of the electric push rod 100 and the foot pedal 200 do not move.

[0050] In summary, the working principle of this solution is as follows:

[0051] After inserting the plug 202 of the foot pedal 200 into the sleeve 101, the telescopic end of the electric push rod 100 is fixed to the fixing port 201 of the foot pedal 200 by means of bolts, and the safety pedal 205 and the electric push rod 100 are connected to the corresponding circuit interfaces in turn. The driver sits in the cockpit of the forklift and starts the forklift. After the whole vehicle is powered on, when the driver operates the self-resetting three-speed switch 350 to make the telescopic end of the electric push rod 100 move up and down, the foot pedal 200 is driven to move synchronously, thereby adjusting the height of the foot pedal 200 in the foot operating space. At the same time, the driver can observe the icon display of the instrument 320 to know the moving distance of the telescopic end of the electric push rod 100. When the height adjustment of the foot pedal 200 is completed, one foot of the driver steps on the safety pedal 205, and the driver controls the whole vehicle to start working.

[0052] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0053] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A forklift foot space height adjustment system, comprising a foot pedal (200) arranged in the foot operating space, characterized in that: An electric push rod (100) for adjusting the height of the foot pedal (200) is provided below one side of the bottom of the foot pedal (200), the electric push rod (100) comprising a telescopic end and a motor (360), the telescopic end of the electric push rod (100) being internally threadedly connected to a push rod, an end of the push rod away from the telescopic end of the electric push rod (100) and an output shaft of the motor (360) are both fixed with rotating gears, a transmission gear is meshed between the two rotating gears, and an adjustment device is connected to the power supply access end of the motor (360), the adjustment device is used to control the motor (360) to rotate forward and reverse, so that the motor (360) drives the telescopic end of the electric push rod (100) to move up and down.

2. The forklift foot space height adjustment system according to claim 1, characterized in that: A sleeve (101) is provided below the side of the foot pedal (200) away from the electric push rod (100), and a plug post (202) is fixed at the bottom of the foot pedal (200). The plug post (202) is inserted into the sleeve (101) to limit the moving direction of the foot pedal (200). A movably connected spring (203) is provided on the outer side of the plug post (202), one end of the spring (203) is against the bottom of the foot pedal (200), and the other end of the spring (203) is against the top of the sleeve (101).

3. The forklift foot space height adjustment system according to claim 1, characterized in that: A fixing opening (201) is provided on the surface of the foot pedal (200); the telescopic end of the electric push rod (100) is fixed to the fixing opening (201) of the foot pedal (200) by means of bolts; a limiting plate (204) is fixed to a side of the foot pedal (200) away from the fixing opening (201); and a safety pedal (205) is provided on a side of the top of the foot pedal (200) close to the limiting plate (204).

4. The forklift foot space height adjustment system according to claim 1, characterized in that: The regulating device comprises a self-resetting three-speed switch (350), the self-resetting three-speed switch (350) is connected to a power supply module (300), the power supply module (300) comprises a DCDC converter (303), and the K5 and K6 contacts of the self-resetting three-speed switch (350) are respectively connected to the positive and negative poles of the power supply of the DCDC converter (303); The K1 and K3 contacts of the self-resetting three-speed switch (350) are connected in parallel to the positive pole of the motor (360), and the K2 and K4 contacts of the self-resetting three-speed switch (350) are connected in parallel to the negative pole of the motor (360), wherein the K1 contact is connected in series with a normally closed rising proximity switch (351), and the K2 contact is connected in series with a normally closed falling proximity switch (352).

5. The forklift foot space height adjustment system according to claim 4, characterized in that: The DCDC converter (303) is connected to an instrument (320) and a vehicle controller (330), and the A3, A4 and A5 terminals of the vehicle controller (330) are connected to a potentiometer (340), and a pull rod of the potentiometer (340) is fixed to the bottom of the pedal (200).

6. The forklift foot space height adjustment system according to claim 5, characterized in that: The potentiometer (340) outputs a corresponding voltage V according to a displacement signal Y of the telescopic end of the electric push rod (100), and the output voltage V of the potentiometer (340) is transmitted from the vehicle controller (330) to the instrument (320) via the CAN bus for real-time display.

7. The forklift foot space height adjustment system according to claim 4, characterized in that: The DCDC converter (303) is connected to a BMS controller (302), the BMS controller (302) is connected to a discharge contactor (301), the contact of the discharge contactor (301) is connected to a main contactor (314), and the discharge contactor (301) and the main contactor (314) are used for the DCDC converter (303) to connect a meter (320), a vehicle controller (330) and a self-resetting three-speed switch (350).

8. The forklift foot space height adjustment system according to claim 4, characterized in that: The DCDC converter (303) is connected to a start-up module (310), and the start-up module (310) comprises a fuse (311), an emergency power-off switch (312), and a key switch (313). The positive pole of the power supply of the DCDC converter (303) is sequentially connected in series with the fuse (311), the emergency power-off switch (312), and the key switch (313). The key switch (313) is used for the DCDC converter (303) to connect the instrument (320), the vehicle controller (330), and the BMS controller (302).

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