A hydraulic valve group control system and an intelligent stacker truck having the same

Abstract

The present invention relates to the field of stackers, and particularly to a hydraulic valve group control system and an intelligent stacker having the same. The control system includes a hydraulic module, a PLC controller module, a hydraulic valve group control module, a control module, and an action module. The hydraulic module is connected to the PLC controller module, the PLC controller module is connected to the hydraulic valve group control module, the control module is connected to the hydraulic valve group control module. The PLC controller module controls the start of the hydraulic module to provide hydraulic pressure to the hydraulic valve group control module. The control module issues instructions to the hydraulic valve group control module and starts the corresponding equipment operation actions through the action module, solving the problems of oil circuit switching and control by mechanical multi-way valves, where the multi-way valves are restricted by position, the assembly is rigid, there are many oil pipes on the multi-way valves, it is difficult to assemble and repair, and the wiring of the relay cooperating with the solenoid valve for control is complex, which is troublesome for relatively complex oil circuit control.

Description

Technical Field

[0001] The present invention relates to the technical field of stackers, and in particular to a hydraulic valve group control system and an intelligent stacker having the same. Background Art

[0002] A stacker is an industrial handling vehicle, which refers to various wheeled handling vehicles for loading, stacking, and short-distance transportation of palletized goods. It is commonly used for the transportation of large objects in warehousing and is usually driven by a fuel engine or a battery. It is widely used in ports, stations, airports, freight yards, factory workshops, warehouses, distribution centers, etc., and can enter the cabin, carriage, and container for the loading and unloading of palletized goods. It is an essential equipment in pallet transportation and container transportation.

[0003] A Chinese invention patent with the application number 201810714936.9 discloses a front-moving forklift mast displacement device, which drives a folding frame to expand and contract through a motor, so that the folding frame drives the fork to move back and forth, facilitating the loading of goods without the need to move the forklift as a whole; the execution of sliding expansion and contraction is stable, with stronger flexibility, convenient for operation, lower manufacturing cost, and the self-weight of the forklift can be reduced.

[0004] The above technical solution has the following problems: its telescopic structure only has the function of moving back and forth and is driven by a motor. The motor wiring is troublesome. In addition, if other actions such as lateral side movement are to be added, a mechanical multi-way valve or a relay needs to be additionally set to cooperate with the solenoid valve for control. The multi-way valve is limited by the position, the assembly is rigid, which adds many limitations to the overall vehicle appearance design. There are many upper oil pipes on the multi-way valve, and the assembly and maintenance are both difficult; the wiring for the relay to cooperate with the solenoid valve control is complex, which is troublesome for more complex oil circuit control. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a hydraulic valve group control system for the deficiencies of the prior art. By setting a PLC controller module in the vehicle body main body, the PLC controller module is used to replace the control of multiple relays cooperating with solenoid valves, solving the problems of oil circuit switching and control by a mechanical multi-way valve, the multi-way valve being limited by the position, the assembly being rigid, there being many upper oil pipes on the multi-way valve, the assembly and maintenance being difficult, and the wiring for the relay to cooperate with the solenoid valve control being complex and troublesome for more complex oil circuit control.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A hydraulic valve group control system includes a hydraulic module, a PLC controller module, a hydraulic valve group control module, a control module, and an action module. The hydraulic module is connected to the PLC controller module, the PLC controller module is connected to the hydraulic valve group control module, the control module is connected to the hydraulic valve group control module. The PLC controller module controls the start of the hydraulic module to provide hydraulic pressure to the hydraulic valve group control module. The control module issues commands to the hydraulic valve group control module and starts the corresponding equipment operation actions through the action module.

[0008] The hydraulic valve group control module is set as an integrated hydraulic valve assembly, which is connected to the hydraulic module by a rubber hose.

[0009] As an improvement, the PLC controller module is programmed according to requirements and receives, processes, and outputs signals according to the commands given by the control module.

[0010] As an improvement, the control module is set as a handle-type button, which issues control signals according to personnel operations. The control module includes a forward and backward switch, a tilting switch, a side shift switch, and a lifting switch.

[0011] As an improvement, the action module includes a forward and backward unit, a tilting unit, a side shift unit, and a lifting unit. The forward and backward unit is used to receive the control signal of the PLC controller module to realize the forward or backward movement of the forklift forks;

[0012] The tilting unit is used to receive the control signal of the PLC controller module to realize the forward or backward tilt of the forklift forks;

[0013] The side shift unit is used to receive the control signal of the PLC controller module to realize the opening or closing of the forklift forks to both sides;

[0014] The lifting unit is used to receive the control signal of the PLC controller module to realize the rising or falling of the forklift forks.

[0015] As an improvement, the forward and backward unit includes a forward solenoid valve and a backward solenoid valve, and the forward solenoid valve and the backward solenoid valve are respectively electrically connected to the PLC controller module.

[0016] As an improvement, the tilting unit includes a forward tilt solenoid valve and a backward tilt solenoid valve, and the forward tilt solenoid valve and the backward tilt solenoid valve are respectively electrically connected to the PLC controller module.

[0017] As an improvement, the side shift unit includes an opening solenoid valve and a closing solenoid valve, and the opening solenoid valve and the closing solenoid valve are respectively electrically connected to the PLC controller module.

[0018] As an improvement, the lifting unit includes a lifting solenoid valve and a lowering solenoid valve, and the lifting solenoid valve and the lowering solenoid valve are respectively electrically connected to the PLC controller module.

[0019] Another object of the present invention is to provide an intelligent stacker. By arranging the hydraulic module and the PLC controller module inside the main body of the vehicle, and arranging the hydraulic valve group control module at the front end position of the scissor structure, the problems of long oil circuits between the hydraulic valve group control module and each action unit, non-compact structure, and easy occurrence of hose pulling and bending during operation are solved.

[0020] To achieve the above object, the present invention provides the following technical solutions:

[0021] An intelligent stacker adopts the aforementioned hydraulic valve group control system, and includes a vehicle body main body, a fork, an operating rod arranged on the vehicle body main body, and a gantry structure arranged at the front end of the vehicle body main body. A scissor structure that can move up and down along the gantry structure is arranged at the gantry structure. The fork is arranged at the front end position of the scissor structure. The hydraulic valve group control module is arranged at the front end position of the scissor structure. The hydraulic module and the PLC controller module are both arranged inside the vehicle body main body.

[0022] As an improvement, a pulley group is arranged on the scissor structure, and the hose bypasses the pulley group.

[0023] As an improvement, a sliding frame is arranged on one side of the scissor structure close to the vehicle body main body. Driven by a lifting oil cylinder, the sliding frame slides up and down along the inner gantry of the gantry structure, thereby driving the overall lifting movement of the scissor structure.

[0024] As an improvement, a retracting and extending oil cylinder is arranged at the scissor structure. One end of the retracting and extending oil cylinder is rotatably connected to the sliding frame, and the other end thereof is rotatably connected to the inner fork plate of the scissor structure.

[0025] As an improvement, the tilting unit includes a tilting oil cylinder arranged below the hydraulic valve group control module.

[0026] As an improvement, the side-shifting unit includes a side-shifting double-acting oil cylinder arranged on the front side of the hydraulic valve group control module.

[0027] The beneficial effects of the present invention:

[0028] 1. In the present invention, by arranging a PLC controller module inside the vehicle body main body, programs can be freely written into the PLC controller module according to user requirements. The wiring method is flexible, diverse, simple and clear. The PLC controller module is used to replace the cooperation of multiple relays and solenoid valves for control. Compared with the existing mechanical multi-way valve control and relay solenoid valve control methods, it overcomes the problems that when the mechanical multi-way valve is used for oil circuit switching and control, the multi-way valve is limited by position, the assembly is rigid, which adds many limitations to the overall vehicle appearance design, and there are many upper oil pipes on the multi-way valve, making assembly and maintenance difficult; the wiring of the relay cooperating with the solenoid valve control is complex, which is troublesome for relatively complex oil circuit control. It can distribute the solenoid valves at different parts of the vehicle body according to different vehicle models, providing convenience for the diversified design of the whole vehicle. At the same time, the control system is stable, the control methods are diverse, and a good solution is provided for the switching of the oil circuit system.

[0029] 2. In the present invention, by arranging the hydraulic module and the PLC controller module inside the vehicle body main body, and arranging the hydraulic valve group control module at the front end position of the scissor structure, the oil circuit connection lines between the hydraulic valve group control module and the advancing and retreating unit, the tilting unit and the side shifting unit are shortened, reducing the long-distance layout of the oil circuit and optimizing the mechanism. In addition, by arranging a pulley group on the oil circuit connection line between the hydraulic valve group control module and the lifting unit, the oil circuit can slide relative to the pulley group during the working process of the forklift to avoid situations such as hose pulling and bending.

[0030] 3. In the present invention, by arranging the fork to be mounted at the front end of the scissor structure and capable of rotating at a certain angle, it can rotate at a small angle along the front end of the scissor structure under the drive of the tilting oil cylinder, without the need for the entire front support structure of the forklift to tilt and rotate, and the structure is simpler, more compact and has better stability.

[0031] In summary, the present invention has the advantages of stable control, multiple control methods, compact structure, low cost, reasonable layout, etc.; it is particularly applicable to the technical field of stacker trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a module schematic diagram of the hydraulic valve group control system;

[0034] Figure 2 It is a structural schematic diagram of an intelligent stacker truck;

[0035] Figure 3Schematic diagram of the internal structure of the intelligent stacker truck body;

[0036] Figure 4 Side view of the intelligent stacker truck;

[0037] Figure 5 Schematic diagram of the structure of the gantry part;

[0038] Figure 6 Schematic diagram of the structure of the scissor structure. Detailed implementation manners

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] Embodiment 1

[0041] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0042] As Figure 1 shown, a hydraulic valve group control system includes a hydraulic module 1, a PLC controller module 2, a hydraulic valve group control module 3, a control module 4, and an action module 5. The hydraulic module 1 is connected to the PLC controller module 2, the PLC controller module 2 is connected to the hydraulic valve group control module 3, the control module 4 is connected to the hydraulic valve group control module 3. The PLC controller module 2 controls the start of the hydraulic module 1 to provide hydraulic pressure to the hydraulic valve group control module 3. The control module 4 issues instructions to the hydraulic valve group control module 3 and starts the corresponding equipment operation actions through the action module 5.

[0043] It is worth mentioning that by setting the PLC controller module in the body main body, programs can be written into the PLC controller module arbitrarily according to user requirements. The wiring method is flexible, simple and clear. Using the PLC controller module to replace the cooperation of multiple relays and solenoid valves for control, compared with the existing mechanical multi-way valve control and relay solenoid valve control methods, it overcomes the problems of the mechanical multi-way valve for oil circuit switching and control, the multi-way valve is limited by position, the assembly is rigid, which adds many limitations to the overall vehicle appearance design, there are many upper oil pipes on the multi-way valve, and there are certain difficulties in assembly and maintenance; the wiring of the relay cooperating with the solenoid valve is complex and troublesome for more complex oil circuit control. It can distribute the solenoid valves in different parts of the vehicle body according to different vehicle models, which provides convenience for the diversified design of the whole vehicle. At the same time, the control system is stable, the control method is diverse, and a good solution is provided for the switching of the oil circuit system.

[0044] Further, the hydraulic valve group control module 3 is set as an integrated hydraulic valve assembly, which is connected to the hydraulic module 1 by a rubber hose 31.

[0045] Further, the PLC controller module 2 is programmed according to requirements and receives, processes, and outputs signals according to the instructions given by the control module 4.

[0046] Further, the control module 4 is set as a handle-type button, which emits a control signal according to the operation of the personnel. The control module 4 includes a forward and backward switch 41, a tilting switch 42, a side shift switch 43, and a lifting switch 44.

[0047] Further, the action module 5 includes a forward and backward unit 51, a tilting unit 52, a side shift unit 53, and a lifting unit 54. The forward and backward unit 51 is used to receive the control signal of the PLC controller module 2 to realize the forward or backward movement of the forklift forks;

[0048] The tilting unit 52 is used to receive the control signal of the PLC controller module 2 to realize the forward or backward tilting of the forklift forks;

[0049] The side shift unit 53 is used to receive the control signal of the PLC controller module 2 to realize the opening or closing of the forklift forks to both sides;

[0050] The lifting unit 54 is used to receive the control signal of the PLC controller module 2 to realize the rising or falling of the forklift forks.

[0051] Further, the forward and backward unit 51 includes a forward solenoid valve 511 and a backward solenoid valve 512, and the forward solenoid valve 511 and the backward solenoid valve 512 are respectively electrically connected to the PLC controller module 2.

[0052] Further, the tilting unit 52 includes a forward tilting solenoid valve 521 and a backward tilting solenoid valve 522, and the forward tilting solenoid valve 521 and the backward tilting solenoid valve 522 are respectively electrically connected to the PLC controller module 2.

[0053] Further, the side shift unit 53 includes an opening solenoid valve 531 and a closing solenoid valve 532, and the opening solenoid valve 531 and the closing solenoid valve 532 are respectively electrically connected to the PLC controller module 2.

[0054] Furthermore, the lifting unit 54 includes a lifting solenoid valve 541 and a lowering solenoid valve 542, and the lifting solenoid valve 541 and the lowering solenoid valve 542 are respectively electrically connected to the PLC controller module 2.

[0055] Embodiment 2

[0056] As Figures 2 to 6As shown in the figure, an intelligent stacker truck includes a vehicle body main body 6, a fork 61, an operating rod 62 disposed on the vehicle body main body 6, and a gantry structure 63 disposed at the front end of the vehicle body main body 6. It is characterized in that: a scissor structure 64 capable of moving up and down along the gantry structure 62 is disposed at the gantry structure 63, the fork 61 is disposed at the front end position of the scissor structure 64, the hydraulic valve group control module 3 is disposed at the front end position of the scissor structure 64, and the hydraulic module 1 and the PLC controller module 2 are both disposed inside the vehicle body main body 6.

[0057] Herein, by disposing the hydraulic module and the PLC controller module inside the vehicle body main body, and disposing the hydraulic valve group control module at the front end position of the scissor structure, the oil circuit connection lines between the hydraulic valve group control module and the forward and backward unit, the tilting unit, and the side shifting unit are shortened, reducing the long-distance layout of the oil circuit, optimizing the mechanism. In addition, by arranging a pulley group on the oil circuit connection line between the hydraulic valve group control module and the lifting unit, the oil circuit can slide relative to the pulley group during the working process of the forklift truck to avoid situations such as hose pulling and bending.

[0058] Further, a pulley group 641 is disposed on the scissor structure 64, and the hose 31 bypasses the pulley group 641.

[0059] Further, a sliding frame 642 is disposed on one side of the scissor structure 64 close to the vehicle body main body. The sliding frame 642 slides up and down along the inner gantry 631 of the gantry structure driven by a lifting oil cylinder 643, thereby driving the overall lifting movement of the scissor structure.

[0060] Further, a forward and backward oil cylinder 644 is disposed at the scissor structure. One end of the forward and backward oil cylinder 644 is rotatably connected to the sliding frame 642, and the other end thereof is rotatably connected to the inner fork plate 645 of the scissor structure.

[0061] Furthermore, the side shifting unit 53 includes a side shifting double-acting oil cylinder 531 disposed on the front side of the hydraulic valve group control module.

[0062] Embodiment Three

[0063] As Figure 6 shown, the same or corresponding components as those in Embodiment Two adopt the corresponding reference numerals in Embodiment Two. For the sake of simplicity, only the differences from Embodiment Two will be described below; the difference between this Embodiment Three and Embodiment Two is that: further, the tilting unit 52 includes a tilting oil cylinder 521 disposed below the hydraulic valve group control module.

[0064] In this embodiment, by arranging the forklift forks to be mounted at the front end of the scissor structure and capable of rotating at a movable angle, it can rotate at a small angle along the front end of the scissor structure under the drive of the tilting oil cylinder, without the need for the entire front support structure of the forklift to tilt and rotate. The structure is simpler, more compact, and has better stability. As Figure 6 can be seen, the forklift forks 61 can be slidably mounted on the rear sliding frame 611, and the sliding frame 611 is rotatably connected to the rotating shaft 613 on the side of the front end of the scissor structure 64 through the rotating block 612 fixedly connected thereto.

[0065] In the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0067] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art in the technical field of the present invention under the technical hint of the present invention, such as the design concept of arranging the preforms in a state with the openings facing upwards, positioning the heights of the preforms through the preform supply mechanism, then positioning the preform mouths through the transfer mechanism and fixing them by negative pressure adsorption, and then performing imaging analysis on them through the detection component to detect the mouths and circumferences of the preform bodies, should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An intelligent stacker, comprising a vehicle body main body (6), a fork (61), an operating lever (62) arranged on the vehicle body main body (6), and a mast structure (63) arranged at the front end of the vehicle body main body (6), characterized in that: It includes a hydraulic module (1), a PLC controller module (2), a hydraulic valve group control module (3), a control module (4) and an action module (5). The hydraulic module (1) is connected to the PLC controller module (2), the PLC controller module (2) is connected to the hydraulic valve group control module (3), and the hydraulic valve group control module (3) is set as an integrated hydraulic valve assembly, which is connected to the hydraulic module (1) by a rubber hose (31). At the gantry structure (63), there is a scissor structure (64) that can move up and down along the gantry structure (62). The forklift forks (61) are arranged at the front end position of the scissor structure (64), and the hydraulic valve group control module (3) is arranged at the front end position of the scissor structure (64). The hydraulic module (1) and the PLC controller module (2) are both arranged inside the vehicle body main body (6). A pulley group (641) is arranged on the scissor structure (64), and the rubber hose (31) bypasses the pulley group (641). On one side of the scissor structure (64) close to the vehicle body main body, there is a sliding frame (642). Driven by a lifting oil cylinder (643), the sliding frame (642) slides up and down along the inner gantry (631) of the gantry structure, thereby driving the overall lifting movement of the scissor structure. A retracting and extending oil cylinder (644) is arranged at the scissor structure. One end of the retracting and extending oil cylinder (644) is rotatably connected to the sliding frame (642), and the other end is rotatably connected to the inner fork plate (645) of the scissor structure. The forklift forks (61) are slidably mounted on the rear sliding frame (611), and the sliding frame (611) is rotatably connected to a rotating shaft (613) on the front side of the scissor structure (64) through a rotating block (612) fixedly connected thereto.

2. A hydraulic valve group control system applied to the intelligent stacker according to claim 1, characterized in that: The control module (4) is connected to the hydraulic valve group control module (3). The PLC controller module (2) controls the hydraulic module (1) to start and provide hydraulic pressure to the hydraulic valve group control module (3). The control module (4) issues instructions to the hydraulic valve group control module (3) and starts the corresponding equipment operation actions through the action module (5).

3. The hydraulic valve group control system according to claim 2, characterized in that: The PLC controller module (2) is programmed according to requirements, and receives, processes and outputs signals according to the instructions given by the control module (4).

4. The hydraulic valve group control system according to claim 2, characterized in that: The control module (4) is set as a handle-type button, and issues control signals according to personnel operations. The control module (4) includes a retracting and extending switch (41), a tilting switch (42), a side shifting switch (43) and a lifting switch (44).

5. The hydraulic valve group control system according to claim 4, characterized in that: The action module (5) includes a retracting and extending unit (51), a tilting unit (52), a side shifting unit (53) and a lifting unit (54). The retracting and extending unit (51) is used to receive the control signal of the PLC controller module (2) to realize the forward or backward movement of the forklift forks. The tilting unit (52) is used to receive the control signal of the PLC controller module (2) to realize the forward or backward tilting of the forklift forks. The side shifting unit (53) is used to receive the control signal of the PLC controller module (2) to realize the opening of the forklift forks to both sides or the closing towards the middle. The lifting unit (54) is used to receive the control signal of the PLC controller module (2) to realize the lifting or lowering of the forklift forks.

6. The hydraulic valve group control system according to claim 5, characterized in that: The advancing and retreating unit (51) includes a forward solenoid valve (511) and a reverse solenoid valve (512), and the forward solenoid valve (511) and the reverse solenoid valve (512) are respectively electrically connected to the PLC controller module (2) by electrical signals.

7. The hydraulic valve group control system according to claim 5, characterized in that: The tilting unit (52) includes a forward tilt solenoid valve (521) and a rear tilt solenoid valve (522), and the forward tilt solenoid valve (521) and the rear tilt solenoid valve (522) are respectively electrically connected to the PLC controller module (2) by electrical signals.

8. The hydraulic valve group control system according to claim 5, characterized in that: The side-shifting unit (53) includes an opening solenoid valve (531) and a closing solenoid valve (532), and the opening solenoid valve (531) and the closing solenoid valve (532) are respectively electrically connected to the PLC controller module (2) by electrical signals.

9. The hydraulic valve group control system according to claim 5, characterized in that: The lifting unit (54) includes a lifting solenoid valve (541) and a lowering solenoid valve (542), and the lifting solenoid valve (541) and the lowering solenoid valve (542) are respectively electrically connected to the PLC controller module (2) by electrical signals.

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