CN219971802U - Electric fork truck descends safety control device - Google Patents
Electric fork truck descends safety control device Download PDFInfo
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- CN219971802U CN219971802U CN202320750878.1U CN202320750878U CN219971802U CN 219971802 U CN219971802 U CN 219971802U CN 202320750878 U CN202320750878 U CN 202320750878U CN 219971802 U CN219971802 U CN 219971802U
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- potentiometer
- electric
- control device
- protective cover
- valve core
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- 230000001681 protective effect Effects 0.000 claims description 19
- 230000009471 action Effects 0.000 description 5
- 230000007420 reactivation Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a descending safety control device of an electric forklift, which comprises a lifting connecting valve core, wherein a stepped cavity is formed in the lifting connecting valve core, a potentiometer is movably arranged in the stepped cavity, the potentiometer is connected with a descending valve through an electric controller in a telecommunication manner, a lifting assembly comprises a connecting rod which is movably arranged in the stepped cavity, one side of the potentiometer is fixedly connected with one end of the connecting rod, the other end of the connecting rod is fixedly connected with a limiting plate, one side of the limiting plate is fixedly connected with a threaded sleeve, a screw rod matched with the threaded sleeve is arranged in the stepped cavity, a limiting block is arranged at a stepped position of the stepped cavity, and one end of the connecting rod is slidably inserted into the limiting block. When the utility model is used, the descending operation rod of the electric forklift can only be started from the middle position of the control device, so that the descending operation can be activated, the potential safety hazard of the forklift is reduced, and the electric forklift is very convenient to use.
Description
Technical Field
The utility model relates to the technical field of electric forklift equipment, in particular to a descending safety control device of an electric forklift.
Background
Electric forklifts are forklifts that operate on electricity, and can be divided into: four-way electric fork truck, electric pallet truck, hand propelled electric lift stacker, electric tractor, three-fulcrum electric fork truck, four-fulcrum counter-weight fork truck, forward electric fork truck, three-fulcrum mini fork truck, ammunition counter-weight fork truck, special electric fork truck for freezer, electric explosion-proof fork truck, walking counter-weight fork truck, electric oil barrel stacker, three-fulcrum leg inserting stacker, station crane, four-fulcrum leg inserting stacker, four-fulcrum wide leg stacker, fork basket picker, four-fulcrum double-layer stacker, electric tractor, picker and other electric series material handling equipment.
The conventional electric fork truck generally adopts a manual mechanical connecting rod to control a hydraulic multi-way valve, the lifting action of a fork is controlled by a lifting potentiometer or a micro switch, and because the hydraulic multi-way valve is limited by the structure and the potentiometer, the descending action is only limited by a descending electromagnetic valve and is not controlled by an input signal, if the descending operation rod is not in the middle position, the descending action position is triggered, and when a driver returns to a seat, the fork can immediately descend, and a certain potential safety hazard exists, so that the electric fork truck descending safety control device is required.
Disclosure of Invention
The utility model aims to provide a descending safety control device of an electric forklift, which solves the problems that in the prior art, a descending operation rod of the electric forklift is not in the middle position, the descending operation position is triggered, and when a driver returns to a seat, a fork can immediately descend, so that potential safety hazards exist.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an electric forklift descent safety control device, comprising:
the electric control valve comprises a lifting connecting valve core, wherein a stepped cavity is formed in the lifting connecting valve core, a potentiometer is movably arranged in the stepped cavity, and the potentiometer is connected with a descending valve through electric control equipment in a telecommunication manner;
the lifting assembly comprises a connecting rod movably arranged in the step cavity, one side of the potentiometer is fixedly connected with one end of the connecting rod, the other end of the connecting rod is fixedly connected with a limiting plate, one side of the limiting plate is fixedly connected with a thread bush, and a screw rod matched with the thread bush is arranged in the step cavity;
the ladder department of ladder cavity is provided with the stopper, the one end of connecting rod is slided and is pegged graft in the inside of stopper.
In one possible design, one end of the lifting connecting valve core is fixedly provided with a protection pipe for protecting the potentiometer through a fixing bolt, one side of the lifting connecting valve core is provided with a threaded blind hole, and one end of the fixing bolt penetrates through the protection pipe to be in threaded connection with the inside of the threaded blind hole.
In one possible design, a first protection cover is fixedly arranged on one side of the limiting block through screws, and the limiting plate is positioned in the first protection cover.
In one possible design, the lifting valve core is fixedly provided with a second protective cover through screws, and an external pipeline is arranged inside the second protective cover.
In one possible design, the first and second shields are identical and symmetrically disposed, and the threaded sleeve is located between the first and second shields.
In one possible design, the miniature motor is fixedly installed in the external pipeline, one end of the output shaft of the miniature motor is fixedly connected with a screw rod through a coupler, and one end of the screw rod is in threaded connection with the inside of the threaded sleeve.
Compared with the prior art, the utility model has the beneficial effects that:
when the lifting connecting valve core moves downwards, the potentiometer voltage signal is sent to the electric controller, the voltage range is 0-2.5V, the electric controller limits the descending motion of the vehicle, the operating lever needs to be reset to the middle position, and when the potentiometer voltage is 2.5V, the descending motion can be activated only from the middle position of the control device, so that the potential safety hazard of the forklift is reduced, and the lifting connecting valve is very convenient to use.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a poppet of the present utility model;
FIG. 2 is a schematic cross-sectional view of a threaded sleeve of the present utility model;
fig. 3 is a circuit diagram of the present utility model.
In the figure: 1. lifting the valve core; 2. a screw; 3. a potentiometer; 4. a stepped cavity; 5. a descent valve; 6. a protective tube; 7. a fixing bolt; 8. a threaded blind hole; 9. a limiting block; 10. a connecting rod; 11. a first shield; 12. a limiting plate; 13. a thread sleeve; 14. a second shield; 15. an external pipe; 16. a micro motor.
Detailed Description
Embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled" and "mounted" should be interpreted broadly, and for example, "coupled" may or may not be detachably coupled; may be directly connected or indirectly connected through an intermediate medium. In addition, "communication" may be direct communication or may be indirect communication through an intermediary. Wherein, "fixed" means that the relative positional relationship is not changed after being connected to each other. References to orientation terms, such as "inner", "outer", "top", "bottom", etc., in the embodiments of the present utility model are merely to refer to the orientation of the drawings and, therefore, the use of orientation terms is intended to better and more clearly illustrate and understand the embodiments of the present utility model, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present utility model.
In embodiments of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the embodiment of the present utility model, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
Referring to fig. 1-3, the present utility model provides a technical solution:
an electric forklift descent safety control device, comprising:
the electric fork lift comprises a lifting connecting valve core 1, wherein a ladder cavity 4 is formed in the lifting connecting valve core 1, a potentiometer 3 is movably arranged in the ladder cavity 4, the potentiometer 3 is in telecommunication connection with a descending valve 5 through an electric controller, when an electric car is started, the potentiometer 3 sends a voltage signal to the electric controller, the electric controller controls the on-off of the descending valve 5 through program logic, if an electric fork lift descending operation rod is not in the middle position, the electric fork lift descending operation rod is limited and sends a fault code to prompt an operator, the descending operation of the fork lift is limited, and the descending operation can be activated only from the middle position of a control device;
the lifting assembly comprises a connecting rod 10 movably arranged in the stepped cavity 4, one side of the potentiometer 3 is fixedly connected with one end of the connecting rod 10, the other end of the connecting rod 10 is fixedly connected with a limiting plate 12, one side of the limiting plate 12 is fixedly connected with a thread bush 13, and a screw rod 2 matched with the thread bush 13 is arranged in the stepped cavity 4;
a limiting block 9 is arranged at the step of the step cavity 4, one end of a connecting rod 10 is slidably inserted into the limiting block 9, one side of the limiting block 9 is fixedly provided with a first protective cover 11 through a screw, a limiting plate 12 is positioned in the first protective cover 11, a second protective cover 14 is fixedly arranged on the lifting joint valve core 1 through a screw, an external pipeline 15 is arranged in the second protective cover 14, the first protective cover 11 and the second protective cover 14 are identical and symmetrically arranged, a thread bush 13 is positioned between the first protective cover 11 and the second protective cover 14, a micro motor 16 is fixedly arranged in the external pipeline 15, one end of an output shaft of the micro motor 16 is fixedly connected with a screw rod 2 through a coupling, one end of the screw rod 2 is in threaded connection with the inside of a thread bush 13, and the micro motor 16 is used for driving the screw rod 2 to rotate, so that the thread bush 13 moves in the lifting joint valve core 1 and is used for adjusting the stroke of the limiting potentiometer 3;
when the lifting joint valve core 1 moves upwards, the potentiometer 3 moves upwards, namely a voltage signal is sent to the electric controller, and the voltage of the electric controller is 2.5-5V and is expressed as a lifting state; when the lifting valve core 1 moves downwards, the potentiometer 3 also moves downwards, a voltage signal of the potentiometer 3 is sent to the electric controller, the voltage range of the electric controller is 0-2.5 and is expressed as a descending state, at the moment, the electric controller limits the descending action of the vehicle, and only when the electric fork truck control rod is reset to the middle position, the limitation and the reactivation can be released when the voltage of the potentiometer 3 is 2.5V;
one end of the lifting connecting valve core 1 is fixedly provided with a protection pipe 6 for protecting the potentiometer 3 through a fixing bolt 7, one side of the lifting connecting valve core 1 is provided with a threaded blind hole 8, one end of the fixing bolt 7 penetrates through the protection pipe 6 to be in threaded connection with the inside of the threaded blind hole 8, and when the potentiometer 3 moves, the protection pipe 6 can play a certain protection role on the potentiometer 3.
The utility model can be used in the field of electric forklift equipment and other fields suitable for the utility model
Working principle: when the potentiometer is used, as the potentiometer 3 is arranged in the lifting joint valve core 1, the structure in the lifting joint valve core 1 is special, so that the potentiometer 3 can move along with the up-and-down movement of the lifting joint valve core 1, the micro motor 16 is utilized to drive the screw rod 2 to rotate, so that the thread bush 13 moves in the lifting joint valve core 1, and the stroke of the potentiometer 3 is regulated and limited;
the voltage range is 0-5V, the middle position is 2.5V, when the lifting joint valve core 1 moves upwards, the potentiometer 3 moves upwards, namely a voltage signal is sent to the electric controller, and the voltage of the electric controller is 2.5-5V and is expressed as a lifting state; when the lifting valve core 1 moves downwards, the potentiometer 3 also moves downwards, a voltage signal of the potentiometer 3 is sent to the electric controller, the voltage range of the electric controller is 0-2.5 and is expressed as a descending state, at the moment, the electric controller limits the descending action of the vehicle, and only when the electric fork truck control rod is reset to the middle position, the limitation and the reactivation can be released when the voltage of the potentiometer 3 is 2.5V;
in summary, the electric forklift descending operation lever can only start from the middle position of the control device, so that the descending operation can be activated, the potential safety hazard of the forklift is reduced, and the electric forklift descending operation lever is quite convenient to use.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An electric forklift descent safety control device, comprising:
the electric control valve comprises a lifting connecting valve core (1), wherein a stepped cavity (4) is formed in the lifting connecting valve core (1), a potentiometer (3) is movably installed in the stepped cavity (4), and the potentiometer (3) is connected with a descending valve (5) through electric controller telecommunication;
the lifting assembly comprises a connecting rod (10) movably arranged in a step cavity (4), one side of the potentiometer (3) is fixedly connected with one end of the connecting rod (10), the other end of the connecting rod (10) is fixedly connected with a limiting plate (12), one side of the limiting plate (12) is fixedly connected with a thread bush (13), and a screw (2) matched with the thread bush (13) is arranged in the step cavity (4);
the step of the step cavity (4) is provided with a limiting block (9), and one end of the connecting rod (10) is slidably inserted into the limiting block (9).
2. The electric forklift descent safety control device according to claim 1, wherein: one end of the lifting connecting valve core (1) is fixedly provided with a protection pipe (6) for protecting the potentiometer (3) through a fixing bolt (7), one side of the lifting connecting valve core (1) is provided with a threaded blind hole (8), and one end of the fixing bolt (7) penetrates through the protection pipe (6) to be connected with the inside of the threaded blind hole (8) in a threaded mode.
3. The electric forklift descent safety control device according to claim 1, wherein: one side of the limiting block (9) is fixedly provided with a first protective cover (11) through a screw, and the limiting plate (12) is positioned in the first protective cover (11).
4. A safety control device for lowering an electric forklift as claimed in claim 3, wherein: the lifting connecting valve core (1) is fixedly provided with a second protective cover (14) through screws, and an external pipeline (15) is arranged in the second protective cover (14).
5. The electric forklift descent safety control device according to claim 4, wherein: the first protective cover (11) and the second protective cover (14) are identical and symmetrically arranged, and the thread sleeve (13) is positioned between the first protective cover (11) and the second protective cover (14).
6. The electric forklift descent safety control device according to claim 5, wherein: the miniature motor (16) is fixedly arranged in the external pipeline (15), one end of an output shaft of the miniature motor (16) is fixedly connected with the screw rod (2) through a coupler, and one end of the screw rod (2) is in threaded connection with the inside of the threaded sleeve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320750878.1U CN219971802U (en) | 2023-04-07 | 2023-04-07 | Electric fork truck descends safety control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320750878.1U CN219971802U (en) | 2023-04-07 | 2023-04-07 | Electric fork truck descends safety control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219971802U true CN219971802U (en) | 2023-11-07 |
Family
ID=88583956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320750878.1U Active CN219971802U (en) | 2023-04-07 | 2023-04-07 | Electric fork truck descends safety control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219971802U (en) |
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2023
- 2023-04-07 CN CN202320750878.1U patent/CN219971802U/en active Active
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