CN220844286U - Feeding table capable of automatically dumping and resetting - Google Patents
Feeding table capable of automatically dumping and resetting Download PDFInfo
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- CN220844286U CN220844286U CN202322652675.1U CN202322652675U CN220844286U CN 220844286 U CN220844286 U CN 220844286U CN 202322652675 U CN202322652675 U CN 202322652675U CN 220844286 U CN220844286 U CN 220844286U
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- way valve
- receiving plate
- pressure receiving
- feeding table
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- 239000000463 material Substances 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000009471 action Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 230000008602 contraction Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of feeding of a conveyor, and solves the problem that a worker often collides with a belt frame due to carelessness and uncoordinated actions or even is severely scratched by a belt which runs fast in the process of conveying materials onto a bottom belt. The feeding table capable of automatically dumping and resetting is hinged with the belt support frame, and can realize the downward dumping and upward overturning under the action of the lifting air cylinder; the feeding table is provided with a rotating channel in the same shape as the pressure receiving plate, the pressure receiving plate is hinged at the rotating channel, two ends of the connecting rod are respectively hinged at the bottom end of the pressure receiving plate and a two-position three-way valve, and the two-position three-way valve is fixedly connected at the bottom end of the feeding table; the pressure receiving plate is pressed down under the action of materials to drive the connecting rod to push the valve core of the two-position three-way valve to move rightwards, and after the materials are unloaded, the pressure receiving plate and the two-position three-way valve are restored to the original positions under the action of the reset mechanism. The device has a simple and ingenious structure, and can realize the functions of automatic dumping and resetting of the feeding table.
Description
Technical Field
The utility model belongs to the technical field of conveyor feeding, and particularly relates to a feeding table capable of automatically dumping and resetting.
Background
Underground tunneling working surfaces often utilize a belt conveyor bottom belt to convey material to the working surface.
At the feeding end of the conveyor, a worker is required to carry materials to the bottom belt so as to finish feeding work; however, in the process of operation, collision with a running belt is often caused by carelessness and uncoordinated actions, so that workers are injured or the belt is damaged, and meanwhile, the feeding mode also has the problems of low efficiency and high action strength.
Disclosure of utility model
The utility model provides a feeding table capable of automatically dumping and resetting in order to solve at least one technical problem in the prior art.
The utility model is realized by adopting the following technical scheme: the utility model provides a loading table that can empty and reset automatically, includes loading table, material table rotary mechanism, pressurized induction mechanism and air supply; the material table rotating mechanism comprises a material table supporting frame, a lifting cylinder and a two-position four-way valve, wherein the material table is rotationally connected to the material table supporting frame and realizes declination and upturning under the action of the lifting cylinder; the pressure sensing mechanism comprises a pressure receiving plate, a connecting rod, a two-position three-way valve and a reset mechanism, a rotating channel which is in the same shape as the pressure receiving plate is arranged at the feeding table, the pressure receiving plate is hinged at the rotating position, two ends of the connecting rod are respectively hinged at the bottom end of the pressure receiving plate and the two-position three-way valve, and the two-position three-way valve is fixedly connected at the bottom end of the feeding table; the pressure receiving plate is pressed down under the action of materials to drive the connecting rod to push the valve core of the two-position three-way valve to move rightwards, and after the materials are unloaded, the pressure receiving plate and the two-position three-way valve are restored to the original positions under the action of the reset mechanism; the two lifting cylinders are connected in parallel in the air path, and the rodless cavity and the rod cavity of the lifting cylinders are respectively connected with the working air port A, B of the two-position four-way valve; the pneumatic control cavity of the two-position four-way valve is connected with the working air port A of the two-position three-way valve, and the two-position four-way valve and the air inlet P of the two-position three-way valve are both connected with an air source.
Preferably, a one-way overflow valve is connected to the gas path between the working gas port A of the two-position four-way valve and the rodless cavity of the lifting cylinder.
Preferably, a time delay control loop is connected to the air path between the pneumatic control cavity of the two-position four-way valve and the working air port A of the two-position three-way valve.
Preferably, the delay control loop comprises a one-way throttle valve and an air capacitor which are connected in series, one end of the one-way throttle valve is connected with a working air port A of the two-position three-way valve, and one end of the air capacitor is connected with an air control cavity of the two-position four-way valve.
Preferably, the reset mechanism is a spring, and the valve core of the two-position three-way valve is reset under the action of the spring.
Preferably, the reset mechanism is an air stay bar, the top ends of the two air stay bars are respectively hinged at the position below the pressure receiving plate, which is close to the edge, and the lower ends of the two air stay bars are hinged at the two sides of the two-position three-way valve housing.
Preferably, when the pressure receiving plate is not under the pressure of the material, the pressure receiving plate is positioned above the feeding table and forms an included angle with the feeding table, and at the moment, the feeding table is in a declined shape.
Preferably, the bottom of the material table support frame is anchored on the roadway bottom plate, and the top of the material table support frame is fixedly connected on the belt stay bar; the two ends of the lifting cylinder are respectively hinged on the feeding table and the supporting frame of the feeding table.
Preferably, the two-position three-way valve is positioned at the inner side of the feeding table and close to the position where the feeding table is hinged with the feeding table supporting frame.
Compared with the prior art, the utility model has the beneficial effects that:
the device has a simple and ingenious structure, and can realize the functions of automatic dumping and resetting of the feeding table by matching the mechanical structure and the air path structure formed by the feeding table, the feeding table rotating mechanism, the pressure sensing mechanism and the air source, and the feeding table can be directly conveyed onto a bottom belt without a worker and only placed on the declined feeding table.
The whole set of device adopts pneumatic element, can the safety risks such as explosion-proof, electric shock, electric leakage that electrical equipment had. The delay control air path is added, so that mechanical injury caused by rapid rotation of the feeding table is avoided. The device does not need wires, switches, etc. in the electrical control device.
After being modified to a certain degree, the device can be applied to other places needing loading and unloading, such as an unloading table at the tail of a belt conveyor, the tail of a hopper of a material transporting rubber-tyred vehicle and the like.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a loading table and a table rotating mechanism in this embodiment;
FIG. 2 is a schematic view of the structure of the loading table and the pressure sensing mechanism in this embodiment;
FIG. 3 is a schematic diagram of the structure of the pressure sensing mechanism of the present embodiment;
FIG. 4 is a schematic diagram showing the connection of the pressure receiving plate and the gas stay in the present embodiment;
FIG. 5 is a schematic diagram showing the connection between the pressure receiving plate and the loading table in the embodiment;
FIG. 6 is a schematic view of the installation position of the two-position three-way valve of the present embodiment;
FIG. 7 is a schematic diagram of the air path of the present embodiment;
Fig. 8 is a schematic diagram of the delay control loop of the present embodiment.
In the figure: 1-a feeding table; 201-a material platform supporting frame; 202, lifting air cylinders; 203-a two-position four-way valve; 204-a one-way overflow valve; 205-one-way throttle valve; 206-air capacity; 301-a pressure receiving plate; 302-a connecting rod; 303-two-position three-way valve; 304-gas strut; 4-air source.
Detailed Description
Technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the examples of this utility model without making any inventive effort, are intended to fall within the scope of this utility model.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are merely for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims, and any structural modifications, proportional changes, or dimensional adjustments, which may be made by those skilled in the art, should fall within the scope of the present disclosure without affecting the efficacy or the achievement of the present utility model, and it should be noted that, in the present disclosure, relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual relationship or order between such entities.
The present utility model provides an embodiment:
The feeding table capable of automatically dumping and resetting comprises a feeding table 1, a table rotating mechanism, a pressure sensing mechanism and an air source 4; the material table rotating mechanism comprises a material table supporting frame 201, a lifting cylinder 202 and a two-position four-way valve 203, wherein the material table 1 is rotationally connected to the material table supporting frame 201 and realizes declination and upturning under the action of the lifting cylinder 202; the pressure sensing mechanism comprises a pressure receiving plate 301, a connecting rod 302, a two-position three-way valve 303 and a reset mechanism, a rotating channel which is the same with the pressure receiving plate 301 is arranged at the position of the feeding table 1, the pressure receiving plate 301 is hinged at the rotating position, two ends of the connecting rod 302 are respectively hinged at the bottom end of the pressure receiving plate 301 and the two-position three-way valve 303, and the two-position three-way valve 303 is fixedly connected with the bottom end of the feeding table 1; the pressure receiving plate 301 is pressed down under the action of materials to drive the connecting rod 302 to push the valve core of the two-position three-way valve 303 to move rightwards, and after the materials are unloaded, the pressure receiving plate 301 and the two-position three-way valve 303 are restored to the original positions under the action of the reset mechanism; the two lifting cylinders 202 are connected in parallel in the air path, and a rodless cavity and a rod cavity of the lifting cylinders 202 are respectively connected with a working air port A, B of the two-position four-way valve 203; the pneumatic control cavity of the two-position four-way valve 203 is connected with a working air port A of the two-position three-way valve 303, the two-position four-way valve 203 and an air inlet P of the two-position three-way valve 303 are both connected with an air source 4, and the air source 4 is a downhole air pressing pipe.
The device uses wind power in the air pressing pipe in the roadway as power, uses the reversing valve to control, completes dumping action through the expansion and contraction of the air cylinder, and adopts a compression device to 'sense' external pressure so as to realize automatic dumping and resetting.
As shown in fig. 1, in this embodiment, the bottom of the material table supporting frame 201 is anchored on the roadway floor, and the top is fixedly connected on the belt supporting rod; the two ends of the lifting cylinder 202 are respectively hinged on the feeding table 1 and the table supporting frame 201. The rotating channel in the same shape as the pressure receiving plate 301 is positioned at the lower half part of the feeding table 1, so that workers can conveniently carry materials to the pressure receiving plate 301, and the feeding table 1 and the pressure receiving plate 301 are made of light alloy materials.
As shown in fig. 2-6, the pressure receiving plate 301, the connecting rod 302 and the two-position three-way valve 303 form an offset crank block mechanism, the two-position three-way valve 303 is located at the inner side of the feeding platform 1 and close to the position where the feeding platform 1 is hinged with the material platform supporting frame 201, and after receiving the material pressure with a certain weight, the pressure receiving plate 301 is pressed down until being parallel to the feeding platform 1 and blocked and limited by the feeding platform 1. When the reset mechanism is a spring, the valve core of the two-position three-way valve 303 is reset under the action of the spring.
When the resetting mechanism is a gas stay bar 304, the top ends of the two gas stay bars 304 are respectively hinged at the position close to the edge below the pressure receiving plate 301, and the lower ends are hinged at the two sides of the two-position three-way valve 303 shell. Because the gas stay rod 304 has the characteristics of being compressed under force and automatically resetting under the condition of no force, the gas stay rod and the spring jointly apply force to jack up the pressure receiving plate 301, and the spring which is easy to generate mechanical fatigue can be removed, so that the pressure receiving plate 301 can be independently jacked up.
When the pressure receiving plate 301 receives pressure, it will rotate to the right in the figure, and then the valve core of the two-position three-way valve 303 is pushed to slide to the right by the connecting rod and overcoming the resistance of the spring or the air supporting rod 304. After the pressure is removed, the two-position three-way valve 303 rotates leftwards under the action of a spring or a gas stay rod 304, so that the valve is reset. When the pressure receiving plate 301 is not under the pressure of the material, the pressure receiving plate is located above the feeding table 1 and forms an included angle with the feeding table 1, and at this time, the feeding table 1 is declined.
In order to achieve the purpose of automatically resetting after the external force is eliminated by dumping the material onto the belt after the pressure receiving plate 301 is stressed, the aim is to finish dumping the material by a pneumatic control loop. Fig. 7 is a diagram of the pneumatic control circuit of the present device. In the figure, two lifting cylinders 202 are in parallel connection in a gas path, and the expansion and contraction of the two lifting cylinders are controlled by a two-position four-way valve 203. In order to prevent the lifting cylinder 202 from overspeed and out of control due to the dual actions of air pressure and pressure plate gravity when the lifting cylinder is descending, a one-way overflow valve 204 is connected to the air path between the working air port A of the two-position four-way valve 203 and the rodless cavity of the lifting cylinder 202.
In the figure, the right side of the two-position four-way valve 203 is a spring, and the left side is a pneumatic cavity. When the left side is acted by wind force in the air pressing pipe, the elasticity of the spring is overcome, the two-position four-way valve 203 is pushed to slide to the right side, and when the wind force is lost, the two-position four-way valve is reset under the action of the spring. The wind force action on the left side of the two-position four-way valve 203 is controlled by a manual two-position three-way valve 303. The left side of the two-position three-way valve 303 is hinged with the connecting rod 302 in fig. 6, and is indirectly acted by the pressure receiving plate 301. After the worker puts the material on the loading table 1, if the loading table 1 is dumped immediately at this time, the worker who can not get the arm to be recovered may be injured, and in order to prevent this accident, a delay control loop is connected to the air path between the pneumatic control cavity of the two-position four-way valve 203 and the working air port a of the two-position three-way valve 303. Fig. 8 is a specific diagram of a delay control loop, where the delay control loop includes a unidirectional throttle valve 205 and an air capacitor 206 connected in series, one end of the unidirectional throttle valve 205 is connected to a working air port a of the two-position three-way valve 303, one end of the air capacitor 206 is connected to an air control cavity of the two-position four-way valve 203, and delay is controlled by the air capacitor 206, and the structure is not described herein.
Sequence of actions: as shown in fig. 7, when the two-position three-way valve 303 is not subjected to external force and is in the right position, the pneumatic control cavity of the two-position four-way valve 203 is communicated with the atmosphere through the delay control loop, so that the two-position four-way valve 203 is in the right position under the action of the spring, the rod cavity of the lifting cylinder 202 is used for air intake, the rod cavity is used for air exhaust, the lifting cylinder 202 is shortened, and the air passage connected to the rod cavity of the cylinder is provided with the one-way overflow valve 204, so that the air passage is slowly lowered until the air passage is lowered to the end point.
When the two-position three-way valve 303 is subjected to external force, the two-position three-way valve 303 is left, wind power in the air pressing pipe enters the time delay control loop through the two-position three-way valve 303, after waiting for 5-10 seconds, the wind power in the time delay control loop enters the pneumatic control cavity in the two-position four-way valve 203, the two-position four-way valve 203 is pushed to move right, the two-position four-way valve 203 is left, at the moment, the rodless cavity of the lifting cylinder 202 is filled with air, the rod cavity is exhausted, and the lifting cylinder 202 stretches.
When the two lifting cylinders 202 are extended, the feeding table 1 is pushed to rotate upwards until the cylinders are extended to the end positions, and when the two lifting cylinders 202 are shortened, the feeding table 1 is pulled to rotate downwards until the cylinders are shortened to the end positions.
Working principle:
When a material is placed on the feeding table 1, the pressure receiving plate 301 hinged on the feeding table 1 is pressed down, then the two-position three-way valve 303 is pushed to move right through the connecting rod 302, the two-position three-way valve 303 is at the left position and is communicated with the air pressing pipe, wind power in the air pressing pipe enters a time delay control loop, after 5-10S, the pressure in the time delay control loop rises, the two-position four-way valve 203 is pushed to move right, the two-position four-way valve 203 is at the left position, the rod-free cavity of the air lifting cylinder is used for air inlet, the lifting cylinder 202 is extended, the feeding table 1 is pushed to rotate upwards, and the material is poured on a belt.
When the material is poured, the pressure applied to the pressure receiving plate 301 is relieved, the pressure is reset under the action of the spring air supporting rod 304, then the two-position three-way valve 303 is pulled to the right position through the connecting rod 302, the time delay control loop is communicated with the atmosphere, the air in the left air control cavity of the two-position four-way valve 203 is discharged to the atmosphere through the time delay control loop, at the moment, the two-position four-way valve 203 moves to the right position under the action of the spring, the air cylinder is provided with the rod cavity for air intake, the rodless cavity is exhausted, the lifting air cylinder 202 is shortened, and the feeding table 1 hinged with the pressure is driven to rotate downwards, so that the feeding table 1 is reset.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (9)
1. Can empty and material loading platform that resets automatically, its characterized in that: comprises a feeding table (1), a table rotating mechanism, a pressure sensing mechanism and an air source (4);
The material table rotating mechanism comprises a material table supporting frame (201), a lifting cylinder (202) and a two-position four-way valve (203), wherein the material table (1) is rotationally connected to the material table supporting frame (201) and realizes declination and upturning under the action of the lifting cylinder (202);
The pressure sensing mechanism comprises a pressure receiving plate (301), a connecting rod (302), a two-position three-way valve (303) and a reset mechanism, wherein a rotating channel which is in the same shape as the pressure receiving plate (301) is arranged at the feeding table (1), the pressure receiving plate (301) is hinged at the rotating position, two ends of the connecting rod (302) are respectively hinged at the bottom end of the pressure receiving plate (301) and the two-position three-way valve (303), and the two-position three-way valve (303) is fixedly connected at the bottom end of the feeding table (1); the pressure receiving plate (301) is pressed down under the action of materials to drive the connecting rod (302) to push the valve core of the two-position three-way valve (303) to move rightwards, and after the materials are unloaded, the pressure receiving plate (301) and the two-position three-way valve (303) are restored to the original positions under the action of the reset mechanism;
The two lifting cylinders (202) are connected in parallel in the air path, and a rodless cavity and a rod cavity of the lifting cylinders (202) are respectively connected with a working air port A, B of the two-position four-way valve (203); the pneumatic control cavity of the two-position four-way valve (203) is connected with a working air port A of the two-position three-way valve (303), and the two-position four-way valve (203) and an air inlet P of the two-position three-way valve (303) are both connected with an air source (4).
2. An automatically pourable and resettable loading station according to claim 1, wherein: a unidirectional overflow valve (204) is connected to the gas path between the working gas port A of the two-position four-way valve (203) and the rodless cavity of the lifting cylinder (202).
3. An automatically pourable and resettable loading station according to claim 2, wherein: a delay control loop is connected to the air path between the pneumatic control cavity of the two-position four-way valve (203) and the working air port A of the two-position three-way valve (303).
4. A loading station capable of automatic dumping and resetting as claimed in claim 3, wherein: the delay control loop comprises a one-way throttle valve (205) and an air volume (206) which are connected in series, one end of the one-way throttle valve (205) is connected with a working air port A of the two-position three-way valve (303), and one end of the air volume (206) is connected with an air control cavity of the two-position four-way valve (203).
5. An automatically pourable and resettable loading station of claim 4, wherein: the reset mechanism is a spring, and the valve core of the two-position three-way valve (303) is reset under the action of the spring.
6. An automatically pourable and resettable loading station of claim 4, wherein: the reset mechanism is an air stay bar (304), the top ends of the two air stay bars (304) are respectively hinged at the position below the pressure receiving plate (301) and close to the edge, and the lower ends of the two air stay bars are hinged at the two sides of the shell of the two-position three-way valve (303).
7. An automatically pourable and resettable loading station according to claim 5 or 6, wherein: when the pressure receiving plate (301) is not under the pressure of the material, the pressure receiving plate is positioned above the feeding table (1) and forms a clamping angle with the feeding table (1), and at the moment, the feeding table (1) is in a declined shape.
8. An automatically pourable and resettable loading station of claim 7, wherein: the bottom of the material table supporting frame (201) is anchored on the roadway bottom plate, and the top is fixedly connected on the belt supporting rod; two ends of the lifting cylinder (202) are respectively hinged on the feeding table (1) and the table supporting frame (201).
9. An automatically pourable and resettable loading station of claim 8, wherein: the two-position three-way valve (303) is positioned at the inner side of the feeding table (1) and is close to the position where the feeding table (1) is hinged with the feeding table supporting frame (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322652675.1U CN220844286U (en) | 2023-09-28 | 2023-09-28 | Feeding table capable of automatically dumping and resetting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322652675.1U CN220844286U (en) | 2023-09-28 | 2023-09-28 | Feeding table capable of automatically dumping and resetting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220844286U true CN220844286U (en) | 2024-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322652675.1U Active CN220844286U (en) | 2023-09-28 | 2023-09-28 | Feeding table capable of automatically dumping and resetting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220844286U (en) |
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2023
- 2023-09-28 CN CN202322652675.1U patent/CN220844286U/en active Active
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