CN212253983U - Opening degree detection device of chute gate - Google Patents
Opening degree detection device of chute gate Download PDFInfo
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- CN212253983U CN212253983U CN202021360072.4U CN202021360072U CN212253983U CN 212253983 U CN212253983 U CN 212253983U CN 202021360072 U CN202021360072 U CN 202021360072U CN 212253983 U CN212253983 U CN 212253983U
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Abstract
The utility model relates to an aperture detection device of chute gate, including installing the thrust hydro-cylinder on the arc discharge gate in loading station chute exit, be equipped with the wave guide of taking electronic head and sensing element in the jar pole of thrust hydro-cylinder, the wave guide with the end cover fixed connection of thrust hydro-cylinder, be equipped with the magnet position that can follow the wave guide motion on the piston of thrust hydro-cylinder. The utility model discloses a waveguide pipe sets up at the inside mode of hydro-cylinder, utilizes the waveguide pipe to carry out the magnetic measurement, has improved the measurement accuracy of radial gate aperture, because measured sensitivity causes sensing element more acute and fragile, the utility model discloses set up these sensing element inside thrust hydro-cylinder, both reached the accurate measurement of radial gate aperture stroke of unloading, let the protection that the magnetostrictive displacement sensor obtained the hydro-cylinder wall again, make measuring device have high temperature resistant, anti macroseism, long-life characteristics.
Description
Technical Field
The utility model relates to an aperture detection device of chute gate.
Background
The chute of the loading station is an important device for connecting the quantitative bin and the truck to be loaded, and guarantees quick loading and uniform loading. In the loading process, the swing angle of the chute swing section and the opening of the arc-shaped discharging gate need to be adjusted in real time so as to adapt to carriages of various types and different types of materials. The inertia of the chute swing section is large, the adjustment is inconvenient, and the uniform loading is realized mainly by adjusting the opening of the arc-shaped discharging gate. The existing technology depends on the condition of loading by visual inspection of operators and manually adjusts the opening size of the radial discharge gate by experience. Because of manual operation, the control precision is difficult to guarantee, and loading efficiency and quality are difficult to improve.
Disclosure of Invention
In order to overcome prior art's problem, the utility model provides an aperture detection device of chute gate, detection device place the switching radial discharge gate in with displacement sensor within the thrust cylinder, both improved control accuracy, realized the automation of loading again.
The utility model discloses a concrete technical scheme is: the utility model provides an aperture detection device of chute gate, is including installing the thrust hydro-cylinder on the gate is unloaded to the arc in loading station chute exit, be equipped with the wave guide of taking electron head and sensing element in the jar pole of thrust hydro-cylinder, the wave guide with the end cover fixed connection of thrust hydro-cylinder, be equipped with the position magnet that can follow the wave guide motion on the piston of thrust hydro-cylinder.
Furthermore, a current excitation circuit and a magnetostrictive effect circuit are arranged in the electronic head.
Furthermore, a sealing nut is arranged between the electronic head and an end cover of the thrust oil cylinder.
Further, the sensitive element is made of magnetostrictive material.
Furthermore, a central hole is formed in the end face of the piston of the thrust oil cylinder, and the waveguide tube is arranged in the central hole and is spaced from the central hole.
Further, the position magnet is a ring magnet.
Furthermore, a protective cover is arranged outside the annular magnet.
Further, the protective cover is made of a non-magnetic material.
Furthermore, the annular magnet and the protective cover are provided with connecting springs.
Further, the connecting spring is a disc spring.
The utility model has the advantages and beneficial effects that: the utility model discloses a waveguide pipe sets up at the inside mode of hydro-cylinder, utilizes the waveguide pipe to carry out the magnetic measurement, has improved the measurement accuracy of radial gate aperture, because measured sensitivity causes sensing element more acute and fragile, the utility model discloses set up these sensing element inside thrust hydro-cylinder, both reached the accurate measurement of radial gate aperture stroke of unloading, let the protection that the magnetostrictive displacement sensor obtained the hydro-cylinder wall again, make measuring device have high temperature resistant, anti macroseism, long-life characteristics.
Drawings
Fig. 1 is a schematic diagram of the structure of the first, third, fifth, seventh and ninth embodiments of the present invention.
Detailed Description
The first embodiment is as follows:
the present embodiment is an opening degree detection device for a chute gate, as shown in fig. 1. The embodiment comprises the following steps: the device comprises a thrust oil cylinder 1 arranged on an arc-shaped discharging gate at the chute outlet of a loading station, wherein a waveguide tube 2 with an electronic head 201 and a sensitive element 202 is arranged in a cylinder rod 101 of the thrust oil cylinder, the waveguide tube is fixedly connected with an end cover 102 of the thrust oil cylinder, and a position magnet 3 capable of moving along the waveguide tube is arranged on a piston 103 of the thrust oil cylinder, as shown in figure 1.
The radial discharge gate is a swing gate for controlling the flow of material out of the chute, and therefore, the swing amount of the gate needs to be accurately measured so as to accurately control the opening of the gate and further control the flow of the material. The embodiment adopts a very accurate mode of measuring the piston displacement by the waveguide tube, can improve the precision by one order of magnitude compared with the existing mode of measuring the displacement by the magnetic piston, and improves good conditions for intelligent chute control.
The embodiment is installed on a chute with a radial discharge gate, and the rotating shaft of the radial discharge gate is arranged at the lower end of the top surface of the swinging section of the chute. The rotating shaft is connected with a rotating arm, an arc gate plate is arranged at the top end of the rotating arm, and the thrust oil cylinder is arranged between the rotating arm and the bottom surface of the chute swinging section.
The thrust oil cylinder described in this embodiment is a dual-chamber oil cylinder, one end of the oil cylinder without a cylinder rod is called an end cover, and one end of the oil cylinder with the cylinder rod is called a cylinder rod cover. The piston is combined with the cylinder rod, a deep hole penetrating through the piston and penetrating into the cylinder rod is drilled, the waveguide tube is placed in the deep hole, a certain distance is kept between the waveguide tube and the inner wall of the center, and friction is avoided. For convenient processing, the deep hole can be placed at the position of the central hole, namely the waveguide tube is coaxial with the cylinder rod and the piston.
In the embodiment, the waveguide tube, the electronic head and the position magnet form a magnetostrictive displacement sensor. The magnetostrictive displacement sensor is electrically connected with the chute controller or the loading station controller to output the position information of the thrust oil cylinder.
The waveguide tube is a hollow metal tube utilizing a high-frequency skin effect and is used for transmitting high-frequency electromagnetic waves generated by a current excitation circuit, a sensitive element is arranged in the waveguide tube and is used for receiving the electromagnetic waves and sending the change of the electromagnetic waves to a magnetostrictive effect circuit, and the sensitive element is made of magnetostrictive materials.
One end of the waveguide tube is inserted into a deep hole formed by the piston and the cylinder rod, the other end of the waveguide tube is fixed on an end cover of the oil cylinder, and the fixing mode can adopt a threaded connection mode, namely, an external thread is arranged at one end of the waveguide tube and is combined with an internal thread on the end cover, and the waveguide tube is locked on the end cover by using a locking nut. The end cap may be perforated to allow the waveguide to pass through, and a pair of retaining nuts may be used to retain the waveguide to the end cap. And the waveguide tube and the end cover need to be sealed to prevent hydraulic oil from leaking.
The electronic head is arranged outside the thrust oil end cover and is electrically connected with the waveguide tube and the sensitive element in the waveguide tube, and a current excitation circuit and a magnetostrictive effect circuit are arranged in the electronic head.
The position magnet is a permanent magnet for mechanically twisting waves with the electromagnetic field around the waveguide to characterize the displacement. The position magnet is fixed on the end face of the piston rod of the thrust oil cylinder. The position magnet can be arranged in a ring shape and sleeved on the waveguide tube, an annular magnetic field is formed around the waveguide tube, the action of the annular magnetic field generated by current in the waveguide tube is more obvious, and the generated magneto-induced torque is stronger. A protective cover can be arranged outside the annular magnet, and the magnet at the fixed position is elastically supported in the protective cover.
The working principle of the magnetostrictive displacement sensor is as follows: the current excitation circuit of the electronic head generates excitation current, the current propagates along the waveguide tube in the waveguide tube, and a ring-shaped magnetic field surrounding the waveguide tube is generated around the waveguide tube along with the current propagation in the waveguide tube. When a piston rod of the thrust oil cylinder drives the position magnet to move along the waveguide tube, a magnetic field carried by the position magnet and a magnetic field generated by a circuit in the waveguide tube generate mechanical torsional waves, the mechanical torsional waves are detected by the sensitive element, so that the current in the magnetostrictive effect circuit is correspondingly changed, and the current change accurately displays the displacement of the piston through the linear relation between the range calibration current and the position of the mechanical torsional waves.
Example two:
the present embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment regarding the electronic head. In this embodiment, a current excitation circuit and a magnetostrictive effect circuit are disposed in the electronic head.
The current excitation circuit is a circuit that generates a high-frequency oscillator that generates a high-frequency oscillation current to produce an antenna-like effect in the waveguide and an electromagnetic field around the waveguide. The telescopic effect circuit converts the position of the mechanical torsional wave received by the sensitive element into a measuring range calibration current so as to determine the displacement change of the piston, and the detection of the displacement change is very accurate and is much higher than the displacement monitoring precision of the existing magnetic piston.
Example three:
the present embodiment is a modification of the above-described embodiments, and is a refinement of the above-described embodiments with respect to an electronic head. In this embodiment, a seal nut 203 is disposed between the electronic head and the end cover of the thrust cylinder, as shown in fig. 1.
The locking nut fixes the waveguide tube and the electronic head on the end cover, so that the waveguide tube extends out of the thrust oil cylinder, and the extending position is the end surface of the oil cylinder on one side without the cylinder rod.
Example four:
this embodiment is a modification of the above-described embodiment, and is a refinement of the above-described embodiment with respect to the sensitive element. The sensing element described in this embodiment is made of magnetostrictive material.
The magnetostrictive material can be a metal magnetostrictive material or a ferrite magnetostrictive material.
Example five:
the present embodiment is an improvement of the above-described embodiment, and is a refinement of the above-described embodiment with respect to the piston and the cylinder rod of the thrust cylinder. In this embodiment, a piston end surface 1031 of the thrust cylinder is provided with a central hole 104, and the waveguide is disposed in the central hole and has a gap with the central hole.
The piston and the cylinder rod are provided with a deep hole, and the waveguide tube is placed in the deep hole. The deep hole is positioned on the end face of the piston on the side not connected with the lever, and is actually aligned with the lever to punch a hole, so that the deep hole extends into the cylinder rod through the piston.
The central axis of the deep hole is positioned at the position of the central hole, namely the position of the rotation center of the piston and the cylinder rod, so that the piston and the lever rotate in the working process and the waveguide tube cannot be interfered.
Since the waveguide is fixed to the end cap and the piston and cylinder rod are moved during operation, the diameter of the bore is larger than the outer diameter of the waveguide to avoid friction, and to maintain sufficient clearance between the two to avoid any collision or friction.
Example six:
this embodiment is a modification of the above embodiment, and is a refinement of the above embodiment with respect to the position magnet. In this embodiment, the position magnet is a ring magnet.
The ring magnet has the advantages of low cost and convenience in processing and installation.
Example seven:
this embodiment is a modification of the above embodiment, and is a refinement of the above embodiment with respect to the position magnet. The ring magnet of this embodiment is externally provided with a protective cover 301, see fig. 1.
The protective cover is used for fixing the position of the magnet and can prevent the magnet from being impacted. The protective cover can be made of nonmagnetic material.
Example eight:
this embodiment is a modification of the above embodiment, and is a refinement of the above embodiment with respect to the protective cover. The protective cover is made of nonmagnetic material.
Non-magnetic materials such as copper, aluminum, etc.
Example nine:
this embodiment is a modification of the above embodiment, and is a refinement of the above embodiment with respect to the protective cover. The ring magnet and the protective cover according to the present embodiment are provided with a connecting spring 302, see fig. 1.
Because the position magnet receives the high-frequency excitation magnetic field in the working process, the position magnet is easy to loosen after being directly fastened, and therefore, the position magnet can be fixed by adopting a spring mode, namely two springs are arranged in the protective cover to clamp the position magnet therein for fixing.
Example ten:
this embodiment is a modification of the above embodiment, and is a refinement of the above embodiment with respect to the spring. The connecting spring described in this embodiment is a disc spring.
The disc spring is sheet-shaped, and the magnet used for fixing the position has the advantages of reliable fixation, small volume and convenient installation.
Finally, it should be noted that the above is only used to illustrate the technical solution of the present invention and not to limit, and although the present invention has been described in detail with reference to the preferred arrangement, it should be understood by those skilled in the art that the technical solution of the present invention (such as the form of loading station, the form of swing chute and the form of various gates, etc.) can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an aperture detection device of chute gate, is including installing the thrust hydro-cylinder on the gate is unloaded to the arc in loading station chute exit, its characterized in that, be equipped with the wave guide of taking electron head and sensing element in the jar pole of thrust hydro-cylinder, the wave guide with the end cover fixed connection of thrust hydro-cylinder, be equipped with the position magnet that can follow the wave guide motion on the piston of thrust hydro-cylinder.
2. The apparatus of claim 1, wherein the electronic head is provided with a current excitation circuit and a magnetostrictive effect circuit.
3. The device of claim 2, wherein a seal nut is arranged between the electronic head and an end cover of the thrust cylinder.
4. The apparatus of claim 3, wherein said sensing element is made of a magnetostrictive material.
5. The apparatus of claim 4, wherein the thrust cylinder has a central bore in the piston end face, and the waveguide is disposed in the central bore with a gap therebetween.
6. The apparatus of claim 5, wherein the position magnet is a ring magnet.
7. The apparatus of claim 6, wherein a protective shield is disposed outside the ring magnet.
8. The device of claim 7, wherein the protective cover is made of a non-magnetic material.
9. The device of claim 8, wherein the ring magnet and the protective cover are provided with a connecting spring.
10. The device of claim 9, wherein said coupling spring is a disc spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360072.4U CN212253983U (en) | 2020-07-13 | 2020-07-13 | Opening degree detection device of chute gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360072.4U CN212253983U (en) | 2020-07-13 | 2020-07-13 | Opening degree detection device of chute gate |
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| Publication Number | Publication Date |
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| CN212253983U true CN212253983U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021360072.4U Active CN212253983U (en) | 2020-07-13 | 2020-07-13 | Opening degree detection device of chute gate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653701A (en) * | 2021-08-31 | 2021-11-16 | 中国船舶重工集团公司第七0四研究所 | Non-contact rudder angle feedback mechanism built in oil cylinder |
-
2020
- 2020-07-13 CN CN202021360072.4U patent/CN212253983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653701A (en) * | 2021-08-31 | 2021-11-16 | 中国船舶重工集团公司第七0四研究所 | Non-contact rudder angle feedback mechanism built in oil cylinder |
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