A forward moving fork lift truck mast

Abstract

The utility model discloses a forwardly moving type forklift portal, including the car body and portal, the portal is in the car body bottom slide, install drive part on the car body, be provided with the rack on the portal, drive part can through rack drive the portal in the car body slide, the bottom both sides of car body are provided with slide rail, the both sides of portal are located the slide rail and are provided with sliding assembly, sliding assembly can slide on the slide rail. Drive part is motor, install gear on the output of motor, gear is engaged with rack. The motor is step motor or servo motor. Hydraulic front and back remove change into servo motor front and back remove, and then adjust speed PID parameter through servo system, reach the purpose of eliminating vibration and improving efficiency. The car body bottom is provided with cavity, and the portal is arranged in the cavity. Servo system increases speed feedback device, and action instruction executor.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, specifically to a reach truck mast. Background Technology

[0002] The existing solution involves manually triggering the pump motor to rotate and pump oil using a manual multi-way valve or a switch solenoid valve, or by signal triggering. At the same time, the valves (forward and backward movement valves) are opened to move the gantry forward and backward. Then, the pump motor is manually or by signal shut off to stop pumping oil, and the valves are closed to stop the forward and backward movement of the gantry.

[0003] Problems or drawbacks: When the valve stem is pushed quickly, the excessive oil flow causes excessive acceleration of the gantry at startup, resulting in gantry vibration. During the final stage of deceleration, the valve stem is quickly retracted, causing a rapid decrease in oil flow and excessive gantry deceleration, leading to gantry vibration again. Alternatively, extending the acceleration and deceleration phases could eliminate gantry vibration, but this would sacrifice gantry movement efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned above in the background technology and to propose a reach truck mast.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A reach truck mast includes a chassis and a mast. The mast slides on the bottom of the chassis. A drive unit is mounted on the chassis. A rack is provided on the mast. The drive unit can drive the mast to slide within the chassis via the rack. Slide rails are provided on both sides of the bottom of the chassis. Sliding components are provided on both sides of the mast at the slide rails. The sliding components can slide on the slide rails.

[0007] As a further embodiment of this utility model: the driving component is a motor, and a gear is installed on the output end of the motor, the gear meshing with the rack.

[0008] As a further embodiment of this invention, the motor is a stepper motor or a servo motor.

[0009] As a further embodiment of this utility model: a cavity is provided at the bottom of the vehicle body, and the mast is disposed within the cavity.

[0010] As a further embodiment of this invention, the slide rail is also fixed on both sides of the cavity.

[0011] As a further embodiment of this utility model: the sliding component includes multiple sets of pulleys, all of which roll on the slide rail.

[0012] As a further embodiment of this utility model: a limiting member is provided at the outlet of the cavity at the end of the slide rail, and the limiting member is used to limit the sliding distance of the gantry on the slide rail.

[0013] As a further embodiment of this utility model: the sliding assembly includes a first rolling wheel, a second rolling wheel and a third rolling wheel, wherein the first rolling wheel is located at the front end of the gantry, and the second and third rolling wheels are symmetrically distributed on both sides of the rear end of the gantry, forming a triangular support structure to enhance the stability of the gantry sliding.

[0014] As a further embodiment of this utility model, the limiting member is L-shaped.

[0015] As a further embodiment of this utility model: the motor is connected to a speed feedback device and a controller, and the controller dynamically adjusts the output speed of the motor through a PID algorithm to achieve smooth acceleration and deceleration control of the gantry.

[0016] The beneficial effects of this invention are: replacing hydraulic forward and backward movement with servo motor forward and backward movement, and then adjusting the speed PID parameters through the servo system to eliminate vibration and improve efficiency. The servo system incorporates a speed feedback device and a motion command execution device. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] In the diagram: 1. Vehicle body; 2. Motor; 3. Gear; 4. Rack; 5. Mast; 6. Slide rail; 7. First rolling wheel; 8. Second rolling wheel; 9. Third rolling wheel; 10. Limiting component. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1, please refer to Figure 1As shown, this utility model is a reach truck mast, including a vehicle body 1 and a mast 5. The mast 5 slides at the bottom of the vehicle body 1. A drive unit is installed on the vehicle body 1. A rack 4 is provided on the mast 5. The drive unit can drive the mast 5 to slide within the vehicle body 1 through the rack 4. Slide rails 6 are provided on both sides of the bottom of the vehicle body 1. Sliding components are provided on both sides of the mast 5 at the slide rails 6. The sliding components can slide on the slide rails 6.

[0022] Example 2, please refer to Figure 1 As shown, this utility model is a reach truck mast, including a vehicle body 1 and a mast 5. The mast 5 slides at the bottom of the vehicle body 1. A drive unit is installed on the vehicle body 1. A rack 4 is provided on the mast 5. The drive unit can drive the mast 5 to slide within the vehicle body 1 through the rack 4. Slide rails 6 are provided on both sides of the bottom of the vehicle body 1. Sliding components are provided on both sides of the mast 5 at the slide rails 6. The sliding components can slide on the slide rails 6.

[0023] The driving component is a motor 2, and a gear 3 is mounted on the output end of the motor 2. The gear 3 meshes with the rack 4. The motor 2 is a stepper motor or a servo motor.

[0024] Example 3, please refer to Figure 1 As shown, this utility model is a reach truck mast, including a vehicle body 1 and a mast 5. The mast 5 slides at the bottom of the vehicle body 1. A drive unit is installed on the vehicle body 1. A rack 4 is provided on the mast 5. The drive unit can drive the mast 5 to slide within the vehicle body 1 through the rack 4. Slide rails 6 are provided on both sides of the bottom of the vehicle body 1. Sliding components are provided on both sides of the mast 5 at the slide rails 6. The sliding components can slide on the slide rails 6.

[0025] The driving component is a motor 2, and a gear 3 is mounted on the output end of the motor 2. The gear 3 meshes with the rack 4. The motor 2 is a stepper motor or a servo motor.

[0026] The bottom of the vehicle body 1 has a cavity, and the gantry 5 is disposed within the cavity. The slide rail 6 is also fixed to both sides of the cavity. The sliding assembly includes multiple sets of pulleys, all of which roll on the slide rail 6.

[0027] A limiting member 10 is provided at the outlet of the cavity at the end of the slide rail 6. The limiting member 10 is used to limit the sliding distance of the gantry 5 on the slide rail 6. The sliding assembly includes a first rolling wheel 7, a second rolling wheel 8, and a third rolling wheel 9. The first rolling wheel 7 is located at the front end of the gantry 5, and the second rolling wheel 8 and the third rolling wheel 9 are symmetrically distributed on both sides of the rear end of the gantry 5, forming a triangular support structure to enhance the stability of the sliding of the gantry 5.

[0028] Example 4, please refer to Figure 1 As shown, this utility model is a reach truck mast, including a vehicle body 1 and a mast 5. The mast 5 slides at the bottom of the vehicle body 1. A drive unit is installed on the vehicle body 1. A rack 4 is provided on the mast 5. The drive unit can drive the mast 5 to slide within the vehicle body 1 through the rack 4. Slide rails 6 are provided on both sides of the bottom of the vehicle body 1. Sliding components are provided on both sides of the mast 5 at the slide rails 6. The sliding components can slide on the slide rails 6.

[0029] The driving component is a motor 2, and a gear 3 is mounted on the output end of the motor 2. The gear 3 meshes with the rack 4. The motor 2 is a stepper motor or a servo motor.

[0030] The bottom of the vehicle body 1 has a cavity, and the gantry 5 is disposed within the cavity. The slide rail 6 is also fixed to both sides of the cavity. The sliding assembly includes multiple sets of pulleys, all of which roll on the slide rail 6.

[0031] A limiting member 10 is provided at the outlet of the cavity at the end of the slide rail 6. The limiting member 10 is used to limit the sliding distance of the gantry 5 on the slide rail 6. The sliding assembly includes a first rolling wheel 7, a second rolling wheel 8, and a third rolling wheel 9. The first rolling wheel 7 is located at the front end of the gantry 5, and the second rolling wheel 8 and the third rolling wheel 9 are symmetrically distributed on both sides of the rear end of the gantry 5, forming a triangular support structure to enhance the stability of the sliding of the gantry 5.

[0032] The limiting member 10 is L-shaped.

[0033] In another embodiment, the motor 2 is connected to a speed feedback device and a controller. The controller dynamically adjusts the output speed of the motor 2 through a PID algorithm to achieve smooth acceleration and deceleration control of the gantry 5.

[0034] The servo system boasts a fast response speed and can accurately execute acceleration, constant speed, and deceleration commands, eliminating vibration without extending acceleration and deceleration time. Compared to the efficiency loss caused by hydraulic systems relying on valves to regulate flow, this solution improves the response speed and positioning accuracy of gantry movement while eliminating jitter.

[0035] Mechanical transmission structures (gear-rack, pulley-rail) replace hydraulic circuits, avoiding common problems in hydraulic systems such as oil leakage and valve blockage, thus reducing equipment maintenance frequency and costs.

[0036] The foregoing has provided a detailed description of one embodiment of the present invention, but the description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A reach truck mast, comprising a chassis (1) and a mast (5), wherein the mast (5) slides on the bottom of the chassis (1), characterized in that, A drive unit is installed on the vehicle body (1), and a rack (4) is provided on the gantry (5). The drive unit can drive the gantry (5) to slide inside the vehicle body (1) through the rack (4). Slide rails (6) are provided on both sides of the bottom of the vehicle body (1), and sliding components are provided on both sides of the gantry (5) at the slide rails (6). The sliding components can slide on the slide rails (6).

2. A reach truck mast according to claim 1, characterized in that, The driving component is a motor (2), and a gear (3) is installed on the output end of the motor (2), which meshes with the rack (4).

3. A reach truck mast according to claim 2, characterized in that, The motor (2) is a stepper motor or a servo motor.

4. A reach truck mast according to claim 1, characterized in that, The bottom of the vehicle body (1) has a cavity, and the gantry (5) is installed in the cavity.

5. A reach truck mast according to claim 4, characterized in that, The slide rail (6) is also fixed on both sides of the cavity.

6. A reach truck mast according to claim 5, characterized in that, The sliding assembly includes multiple sets of pulleys, all of which roll on the slide rail (6).

7. A reach truck mast according to claim 5, characterized in that, The outlet of the cavity is provided with a limiting member (10) at the end of the slide rail (6), and the limiting member (10) is used to limit the sliding distance of the gantry (5) on the slide rail (6).

8. A reach truck mast according to claim 6, characterized in that, The sliding assembly includes a first rolling wheel (7), a second rolling wheel (8), and a third rolling wheel (9), wherein the first rolling wheel (7) is located at the front end of the gantry (5), and the second rolling wheel (8) and the third rolling wheel (9) are symmetrically distributed on both sides of the rear end of the gantry (5) to form a triangular support structure to enhance the stability of the sliding of the gantry (5).

9. A reach truck mast according to claim 1, characterized in that, The limiting member (10) is L-shaped.

10. A reach truck mast according to any one of claims 1 or 9, characterized in that, The motor (2) is connected to a speed feedback device and a controller. The controller dynamically adjusts the output speed of the motor (2) through a PID algorithm to achieve smooth acceleration and deceleration control of the gantry (5).

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