CN214474013U - Load box for testing earth resistivity instrument - Google Patents
Load box for testing earth resistivity instrument Download PDFInfo
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- CN214474013U CN214474013U CN202120791588.2U CN202120791588U CN214474013U CN 214474013 U CN214474013 U CN 214474013U CN 202120791588 U CN202120791588 U CN 202120791588U CN 214474013 U CN214474013 U CN 214474013U
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- load box
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000004804 winding Methods 0.000 claims abstract description 35
- 210000003298 dental enamel Anatomy 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model discloses a load box is used in resistivity appearance test, including shell, side cap, load board, two enamel resistances, two external connections and wire holder. The load box for testing the ground resistivity instrument utilizes the test circuit to carry the direct current output by the current stabilizing power supply, thereby realizing simulation work and facilitating test; the partition plate is used for separating the two branches, so that the enamel resistor is prevented from generating heat during working to influence the color ring resistor and the two ceramic chip capacitors; the external connection window is used for facilitating the installation of external connection wires; the side cover is used for carrying out safety protection on the wire holder; the winding groove is used for accommodating external wires.
Description
Technical Field
The utility model relates to a load box, especially a load box is used in resistivity meter test.
Background
The ZD8M geoelectric instrument is a novel georesistivity observation instrument developed on the basis of the ZD8BI geoelectric instrument. The device can automatically and regularly measure the earth resistivity and the natural potential difference of three direction finding; for the in-situ resistivity observation system, the abnormal operation of the observation system can be caused by the faults of any part of an electrode, an external line, an indoor connecting line, a lightning arrester, a power supply and an observation instrument. Therefore, the load box for the earth resistivity instrument test is provided, and the earth resistivity observation instrument can be conveniently tested.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the load box for the ground resistivity instrument test can provide a simulation working circuit for the ground resistivity observation instrument test.
The technical scheme is as follows: the utility model provides a load box for testing a ground resistivity instrument, which comprises a shell, a side cover, a load plate, a test circuit, two external connecting wires and a wire holder;
an external window is arranged on the left side of the shell; the side cover is hinged on the shell and is used for sealing and covering the external window; the load board is horizontally arranged in the shell; a winding groove is arranged on the upper side surface of the shell; the two external wires are positioned in the winding grooves; the wire holder is arranged on the load board positioned at the window; two external connection holes which are respectively used for conducting butt joint with two external connection wires are arranged on the wire holder;
the test circuit comprises a color ring resistor, two enamel resistors and two ceramic chip capacitors; one ends of the two enamel resistors are electrically connected, the other ends of the two enamel resistors are respectively and electrically connected to the two outer connection holes, and the two enamel resistors are both arranged on the load plate; two ends of the color ring resistor are respectively and electrically connected with one end of each of the two ceramic chip capacitors, and the other ends of the two ceramic chip capacitors are respectively and electrically connected with the two external connection holes;
a partition board is vertically fixed on the inner wall of the upper side of the shell, the partition board and the right side wall of the shell form a control cavity, and the color ring resistor and the two ceramic chip capacitors are located in the control cavity.
Furthermore, a ventilation opening is arranged in the middle of the load plate; the two enamel resistors are respectively positioned at the front side and the rear side of the ventilation opening; a heat radiation fan is arranged on the inner wall of the shell below the ventilation opening; an air inlet is formed in the shell below the heat dissipation fan; a plurality of air outlets are arranged on the front side surface and the rear side surface of the shell; two air deflectors are fixed on the upper side surface of the load plate and above the ventilation opening and are used for respectively guiding airflow of the cooling fan to the two enamel resistors;
a temperature sensor is arranged on the load plate; a controller and a fan driving circuit are arranged in the control cavity; the temperature sensor and the fan driving circuit are electrically connected with the controller, and the controller drives the cooling fan to operate through the fan driving circuit.
Furthermore, a support leg is arranged at each of four top corners of the bottom surface of the shell.
Furthermore, two winding posts are vertically arranged in the winding groove; the upper ends of the two winding posts are fixed with a baffle; two external wires are wound on the two winding posts.
Furthermore, a winding slot cover is hinged on the shell and used for sealing the winding slot; a handle is arranged on the winding slot cover.
Further, a handle is arranged on the side cover.
Furthermore, a locking hole communicated with the two outer connecting holes is arranged in the wire holder; a cylindrical chute is coaxially arranged in the middle of the locking hole; two limiting plates are arranged in the cylindrical sliding groove in a sliding manner; a locking column is fixed on each of the two limiting plates, and a locking spring is elastically arranged between the two limiting plates and used for pushing the end parts of the two locking columns into the two external connecting holes respectively; one end of each external wire is fixed with a plug-in connector which is used for conducting butt joint with the external hole.
Furthermore, the end face of the extending end of the locking column is an arc end face, and an annular groove matched with the arc end face of the locking column is formed in the insertion head.
Furthermore, the other end of each external connection wire is electrically connected with a C-shaped metal sheet for external connection.
Furthermore, a wiring port for extending an external wire is arranged on the side cover.
Compared with the prior art, the utility model, its beneficial effect is: the two enamel resistors, the color ring resistor and the two ceramic chip capacitors form an analog circuit for bearing direct current output by a steady-current power supply, so that analog work is realized, and the test is convenient; the partition plate is used for separating the two branches, so that the enamel resistor is prevented from generating heat during working to influence the color ring resistor and the two ceramic chip capacitors; the external connection window and the side cover are used for facilitating the installation of external connection wires; the winding groove is used for accommodating external wires.
Drawings
Fig. 1 is a sectional view of a front view of the present invention;
FIG. 2 is a cross-sectional view of the wire holder of the present invention;
fig. 3 is a cross-sectional view of the left side view of the present invention;
fig. 4 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1-4, the utility model provides a pair of load box is used in electrical resistivity appearance test includes: the testing device comprises a shell 1, a side cover 3, a load board 8, a testing circuit, two external connecting wires 20 and a wire holder 5;
an external window is arranged on the left side of the shell 1; the side cover 3 is hinged on the shell 1 and is used for sealing and covering the external window; the load board 8 is horizontally arranged in the shell 1; a winding slot 19 is arranged on the upper side surface of the shell 1; the two external wires 20 are positioned in the winding groove 19; the wire holder 5 is mounted on a load board 8 located at the window; two external connection holes 18 which are respectively used for conducting butt joint with two external connection wires 20 are arranged on the wire holder 5;
the test circuit comprises a color ring resistor, two enamel resistors 9 and two ceramic chip capacitors; one ends of the two enamel resistors 9 are electrically connected, the other ends of the two enamel resistors 9 are respectively and electrically connected to the two outer connection holes 18, and the two enamel resistors 9 are both arranged on the load plate 8; two ends of the color ring resistor are respectively and electrically connected with one end of the two ceramic chip capacitors, and the other ends of the two ceramic chip capacitors are respectively and electrically connected with the two external connection holes 18;
a partition plate 16 is vertically fixed on the inner wall of the upper side of the shell 1, a control cavity is formed by the partition plate 16 and the right side wall of the shell 1, and the color ring resistor and the two ceramic chip capacitors are located in the control cavity.
The test circuit is used for bearing the direct current output by the current stabilizing power supply, so that the simulation work is realized, and the test is convenient; the partition plate 16 is used for separating the two branches, so that the enamel resistor 9 is prevented from heating to influence the color ring resistor and the two ceramic chip capacitors when in work; the external connection window is used for facilitating the installation of the external connection wire 20; the side cover 3 is used for carrying out safety protection on the wire holder 5; the winding groove 19 is used to facilitate the storage of the external wire 20.
Further, a ventilation opening 11 is arranged in the middle of the load plate 8; the two enamel resistors 9 are respectively positioned at the front side and the rear side of the ventilation opening 11; a heat radiation fan 10 is arranged on the inner wall of the shell 1 below the ventilation opening 11; an air inlet 27 is arranged on the shell 1 below the heat radiation fan 10; a plurality of air outlets 25 are arranged on the front side surface and the rear side surface of the shell 1; two air deflectors 17 are fixed on the upper side surface of the load plate 8 and above the ventilation opening 11, and are used for respectively guiding the airflow of the cooling fan 10 to the two enamel resistors 9. A temperature sensor is arranged on the load plate 8; a controller and a fan driving circuit are arranged in the control cavity; the temperature sensor and the fan driving circuit are electrically connected with the controller, and the controller drives the cooling fan 10 to operate through the fan driving circuit.
Blowing air by using a cooling fan 10 to cool the two enamel resistors 9, so that the test result is prevented from being influenced by overhigh temperature of the two enamel resistors 9 during working; the air deflector 17 is used for guiding the air of the cooling fan 10 to the enamel resistor 9, so as to ensure the sufficient cooling.
Further, a foot 28 is provided at each of four corners of the bottom surface of the housing 1. The support legs 28 are used to support the housing 1 to ensure the air inlet 27 to be unobstructed.
Further, two winding posts 12 are vertically arranged in the winding slot 19; a baffle is fixed at the upper ends of the two winding posts 12; two external wires 20 are wound on the two winding posts 12. The winding post 12 and the baffle are used for conveniently winding and accommodating the external wires 20.
Further, a winding slot cover 2 is hinged on the shell 1 and used for sealing the winding slot 19; a handle 4 is arranged on the winding slot cover 2. The winding groove 19 is covered by the winding groove cover 2 to prevent the external connection wire 20 from falling out; the winding groove cover 2 is convenient to open by using the handle 4.
Further, a handle 6 is provided on the side cover 3. Opening the side cover 3 is facilitated by means of the handle 6.
Further, a locking hole 24 communicating the two external connection holes 18 is provided in the wire holder 5; a cylindrical chute 22 is coaxially arranged in the middle of the locking hole 24; two limiting plates 23 are arranged in the cylindrical chute 22 in a sliding manner; a locking column 21 is fixed on each of the two limiting plates 23, and a locking spring is elastically arranged between the two limiting plates 23 and used for pushing the end parts of the two locking columns 21 into the two outer connecting holes 18 respectively; a plug-in connector 13 for electrically connecting with the external connection hole 18 is fixed at one end of each external connection wire 20.
By means of the matching among the cylindrical sliding groove 22, the two limiting plates 23, the locking column 21 and the locking spring, after the insertion head 13 is inserted into the outer connecting hole 18, the locking column 21 is pressed back into the locking hole 24, and the end part of the locking column 21 is pressed on the upper insertion head 13 under the action of the locking spring, so that extrusion locking is achieved.
Furthermore, the end face of the extending end of the locking column 21 is an arc end face, and an annular groove 14 matched with the arc end face of the locking column 21 is arranged on the plug-in head 13. The locking of the plug 13 by the locking column 21 is realized by the matching of the annular groove 14 and the arc end surface of the locking column 21.
Further, a C-shaped metal plate 15 for external connection is electrically connected to the other end of each external connection wire 20. The C-shaped metal sheet 15 is used for facilitating the external connection and fixation of the external connection wire 20.
Further, a terminal opening 26 for extending the external connection line 20 is provided in the side cover 3. The external connection wire 20 is extended by the wire connection port 26, and the edge of the side cover 3 is prevented from pressing the external connection wire 20.
The utility model provides a load box for ground resistivity meter test when installing and using, at first set up test system, insert the cartridge head 13 of two external lines 20 on the connection terminal 5, later through C shape sheetmetal 15 external connection on the output of stationary current power supply, the power supply control end electricity of stationary current power supply is connected on ground resistivity meter host computer, after ground resistivity meter host computer connects power and network, test system sets up and finishes;
during testing, a notebook computer is used for starting a ground resistivity instrument host computer through a network to start testing work, the ground resistivity instrument host computer controls the power supply of the steady-current power supply, and an external circuit of the testing circuit bears direct current output by the steady-current power supply to carry out testing; in addition, the current-stabilizing power supply can be independently connected with the test circuit, the control mode of the current-stabilizing power supply adopts manual control, the potentiometer of the rear panel of the power supply is adjusted after the power supply is powered on, and whether the front panel voltmeter and the ammeter change linearly or not can be observed, so that whether the current-stabilizing power supply fails or not can be intuitively judged; the temperature sensor detects temperature information in real time and transmits the temperature information to the controller, and when the controller judges that the temperature is too high, the controller drives the cooling fan 10 to start through the fan driving circuit.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a load box is used in resistivity appearance test which characterized in that: the testing device comprises a shell (1), a side cover (3), a load board (8), a testing circuit, two external connecting wires (20) and a wire holder (5);
an external window is arranged on the left side of the shell (1); the side cover (3) is hinged on the shell (1) and is used for sealing and covering the external window; the load board (8) is horizontally arranged in the shell (1); a winding groove (19) is arranged on the upper side surface of the shell (1); the two external wires (20) are positioned in the winding grooves (19); the wire holder (5) is arranged on a load board (8) positioned at the window; two external connection holes (18) which are respectively used for conducting butt joint with two external connection wires (20) are arranged on the wire holder (5);
the test circuit comprises a color ring resistor, two enamel resistors (9) and two ceramic chip capacitors;
one ends of the two enamel resistors (9) are electrically connected, the other ends of the two enamel resistors (9) are respectively and electrically connected to the two outer connection holes (18), and the two enamel resistors (9) are both arranged on the load plate (8);
two ends of the color ring resistor are respectively and electrically connected with one end of each of the two ceramic chip capacitors, and the other ends of the two ceramic chip capacitors are respectively and electrically connected with the two external connection holes (18);
a partition plate (16) is vertically fixed on the inner wall of the upper side of the shell (1), a control cavity is formed by the partition plate (16) and the right side wall of the shell (1), and the color ring resistor and the two ceramic chip capacitors are located in the control cavity.
2. The load box for testing the earth resistivity instrument according to claim 1, wherein: a ventilation opening (11) is arranged in the middle of the load plate (8); the two enamel resistors (9) are respectively positioned at the front side and the rear side of the ventilation opening (11); a heat radiation fan (10) is arranged on the inner wall of the shell (1) below the ventilation opening (11); an air inlet (27) is arranged on the shell (1) below the heat radiation fan (10); a plurality of air outlets (25) are arranged on the front side surface and the rear side surface of the shell (1); two air deflectors (17) are fixed on the upper side surface of the load plate (8) and above the ventilation opening (11) and are used for respectively guiding the airflow of the cooling fan (10) to the two enamel resistors (9);
a temperature sensor is arranged on the load plate (8); a controller and a fan driving circuit are arranged in the control cavity; the temperature sensor and the fan driving circuit are electrically connected with the controller, and the controller drives the cooling fan (10) to operate through the fan driving circuit.
3. The load box for testing the earth resistivity instrument according to claim 1, wherein: four top corners of the bottom surface of the shell (1) are respectively provided with a support leg (28).
4. The load box for testing the earth resistivity instrument according to claim 1, wherein: two winding posts (12) are vertically arranged in the winding groove (19); the upper ends of the two winding posts (12) are respectively fixed with a baffle; two external wires (20) are wound on the two winding posts (12).
5. The load box for testing the earth resistivity instrument according to claim 4, wherein: a winding groove cover (2) is hinged on the shell (1) and used for sealing and covering the winding groove (19); a handle (4) is arranged on the winding slot cover (2).
6. The load box for testing the earth resistivity instrument according to claim 1, wherein: a handle (6) is arranged on the side cover (3).
7. The load box for testing the earth resistivity instrument according to claim 1, wherein: a locking hole (24) communicated with the two outer connecting holes (18) is arranged in the wire holder (5); a cylindrical sliding groove (22) is coaxially arranged in the middle of the locking hole (24); two limiting plates (23) are arranged in the cylindrical chute (22) in a sliding manner; a locking column (21) is fixed on each of the two limiting plates (23), and a locking spring is elastically arranged between the two limiting plates (23) and used for pushing the end parts of the two locking columns (21) into the two outer connecting holes (18) respectively; one end of each external connecting wire (20) is fixed with a plug-in connector (13) which is used for conducting butt joint with the external connecting hole (18).
8. The load box for testing the earth resistivity instrument of claim 7, wherein: the end face of the extending end of the locking column (21) is an arc end face, and an annular groove (14) matched with the arc end face of the locking column (21) is arranged on the plug-in head (13).
9. The load box for testing the earth resistivity instrument of claim 7, wherein: the other end of each external connecting wire (20) is electrically connected with a C-shaped metal sheet (15) for external connection.
10. The load box for testing the earth resistivity instrument according to claim 1, wherein: a wiring port (26) for extending the external wiring (20) is arranged on the side cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791588.2U CN214474013U (en) | 2021-04-16 | 2021-04-16 | Load box for testing earth resistivity instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791588.2U CN214474013U (en) | 2021-04-16 | 2021-04-16 | Load box for testing earth resistivity instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214474013U true CN214474013U (en) | 2021-10-22 |
Family
ID=78178856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120791588.2U Expired - Fee Related CN214474013U (en) | 2021-04-16 | 2021-04-16 | Load box for testing earth resistivity instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214474013U (en) |
-
2021
- 2021-04-16 CN CN202120791588.2U patent/CN214474013U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |