CN114460138A

CN114460138A - Soil resistivity tester

Info

Publication number: CN114460138A
Application number: CN202111677524.0A
Authority: CN
Inventors: 周毅
Original assignee: Shanghai Longfang Lightning Protection Detection Technology Co ltd
Current assignee: Shanghai Longfang Lightning Protection Detection Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-10

Abstract

The application relates to the technical field of lightning protection detection, and discloses a soil resistivity tester, which comprises a box body, a probe used for contacting soil and a test host used for measuring and displaying a detection value, wherein the test host is arranged in the box body, one side of the box body is detachably provided with a mounting frame, the mounting frame is provided with a driving component used for pressing the probe into the soil, the driving component comprises a driving motor arranged on the mounting frame, a driving gear fixedly connected with an output shaft of the driving motor and a driving rack meshed with one side of the driving gear, and the driving rack can vertically move under the action of the driving motor; the mounting bracket sets up the first hole of stepping down and the second hole of stepping down that distributes along vertical direction including setting up the support in drive rack below on the support, and first hole of stepping down and second hole of stepping down all lie in drive rack under and can supply the probe to wear out. This application accessible drive assembly has the effect that work efficiency is high with the probe in impressing soil.

Description

Soil resistivity tester

Technical Field

The application relates to the technical field of lightning-arrest detection, in particular to a soil resistivity tester.

Background

Lightning protection detection of buildings in engineering construction is one of indispensable processes before construction, soil resistivity is used as characterization of soil conductivity and is one of important factors for determining design requirements of resistance of a grounding body, and therefore a soil resistivity tester is required to be used for measuring the soil resistivity of a construction site before parameters of a grounding device are designed and calculated.

In the related art, chinese patent No. CN206178040U discloses a device for testing earth resistivity based on a quadrupole method, which includes a housing, a probe, and a data line, wherein the housing is provided with a display screen, a connection hole a, a connection hole B, a connection hole C, and a function control key, and is internally provided with a conductivity test circuit board, an ultrasonic ranging circuit board, and a battery, and the probe is inserted into the soil during measurement.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when measuring the soil resistivity of construction site, the probe usually needs manual work to insert into soil, especially for the construction site that the soil matter is harder, still needs one hand to hold the probe, and the instrument such as hammer is used to the other hand with the probe is gone into in soil, and work efficiency is low, awaits improving.

Disclosure of Invention

In order to improve work efficiency, the application provides a soil resistivity tester.

The application provides a soil resistivity tester adopts following technical scheme:

a soil resistivity tester comprises a box body, a probe used for contacting soil and a test host used for measuring and displaying a detection value, wherein the test host is arranged in the box body, one side of the box body is detachably provided with a mounting frame, the mounting frame is provided with a driving assembly used for pressing the probe into the soil, the driving assembly comprises a driving motor arranged on the mounting frame, a driving gear fixedly connected with an output shaft of the driving motor and a driving rack meshed with one side of the driving gear, and the driving rack can vertically move under the action of the driving motor; the mounting bracket is including setting up the support in the drive rack below, set up the first hole of stepping down and the second hole of stepping down that distributes along vertical direction on the support, first hole of stepping down and second hole of stepping down all lie in drive rack under and can supply the probe to wear out.

Through adopting above-mentioned technical scheme, before detecting soil resistivity, place the probe on the support earlier for the probe passes first hole of stepping down and the second hole of stepping down in proper order, stretches into the below of drive rack with the probe. And then starting the driving motor, wherein the driving gear rotates along with the output shaft of the driving motor, and the driving rack moves downwards so as to gradually press the probe into the soil. Above-mentioned process only need the manual work place the probe and operate driving motor's control switch can, compare in the manual mode of hammering into soil with the probe, have labour saving and time saving, advantage that work efficiency is high.

The support sets up the downside at drive assembly, plays the effect of supporting the location probe, is favorable to probe and drive rack alignment. The mounting bracket can be dismantled and set up on the box for mounting bracket and drive assembly can be demolishd from the box, have that the suitability is high, the convenient effect of tearing open and changing of overhauing.

Optionally, the bottom of driving the rack is provided with the connecting block, be provided with the linkage cylinder on the connecting block, the piston rod level of linkage cylinder drives the rack setting and is fixed with the linkage piece towards, the through hole that supplies linkage piece level to penetrate is seted up on the top of probe.

By adopting the technical scheme, after the detection is finished, the driving rack is moved to a state that the linkage block is aligned with the through hole, and then the linkage block extends into the through hole through the linkage cylinder. And then the linkage rack is moved upwards by using the driving motor, the linkage block can move along with the linkage rack and pull out the probe from the soil, so that the process of manually pulling out the probe is omitted, and the device has the effects of labor saving and convenience.

Optionally, the hole wall of the through hole is provided with an internal thread.

Through adopting above-mentioned technical scheme, because the position in building construction place is comparatively remote usually, if the soil that awaits measuring is located the position of inconvenient external power supply, then can with through hole complex member threaded connection on the probe. So set up, when knocking into soil with the probe, operating personnel can hold the instrument such as holding the hammer with one hand on above-mentioned member with location probe, the other hand and strike the probe to increase the interval of hand position and strike the position, reduce the potential safety hazard that the hand was injure by a crashing object.

Optionally, the mounting bracket is further provided with a mounting plate detachably connected to the box body and a top plate horizontally rotatably arranged on the mounting plate, the support is fixedly arranged on the mounting plate, and the driving assembly is arranged on the top plate and located above the support.

Through adopting above-mentioned technical scheme, the roof rotates to set up on the mounting panel, with the probe location before the support, can rotate the roof to the one side of keeping away from the box for drive rack and support stagger, in order to avoid roof and drive assembly to influence the probe and put into the support.

Optionally, the top plate is rotationally connected with the mounting plate through a rotating assembly, the rotating assembly includes an upper hinge seat and a lower hinge seat which are fixedly arranged on one side of the mounting plate, and a rotating shaft which is rotatably arranged between the upper hinge seat and the lower hinge seat in a penetrating manner, and the rotating shaft is fixedly arranged at one end of the top plate; when the roof rotated to with the mounting panel butt, drive rack was located first hole of stepping down directly over.

Through adopting above-mentioned technical scheme, the roof can use the pivot to rotate as the center, makes things convenient for operating personnel cartridge probe. After the probe is inserted and located the support, with the roof turn to with the mounting panel butt, drive rack just in time is located first hole of stepping down and probe directly over this moment, helps drive rack and probe to align to improve operating personnel and adjust the work efficiency when drive rack and probe align.

Optionally, an abutting assembly is connected in the upper hinge seat and used for positioning the top plate in a state of abutting against the mounting plate; the abutting assembly comprises a pulling block, a connecting rod fixed on the lower side of the pulling block, an abutting block fixed on the lower side of the connecting rod and a return spring arranged between the pulling block and the upper hinge seat, the pulling block is positioned above the upper hinge seat, the connecting rod is slidably arranged in the upper hinge seat in a penetrating mode, and an abutting groove for the abutting block to completely extend into is formed in the bottom surface of the upper hinge seat; a rotating gap is formed between the upper hinge seat and the lower hinge seat, and when the return spring is in a natural state, the bottom end of the abutting block is located in the rotating gap.

Through adopting above-mentioned technical scheme, the roof is changeed to when with the mounting panel butt, and reset spring can drive the bottom of butt piece and stretch into rotation clearance, and the butt piece can block the roof and rotate to the one side of keeping away from the mounting panel this moment, helps improving the stability of roof to improve the extrusion effect of drive assembly to the probe. Before the dismouting probe, can lift earlier and draw the piece for the connecting rod drives the butt piece and moves up, stretches into the butt groove completely and shifts out the running clearance until the butt piece, but the roof no longer receives blockking horizontal rotation of butt piece this moment, so that move the roof to the state that makes drive rack and probe dislocation.

Optionally, the support is including setting up the bottom plate on one side of the mounting panel, being located the holding ring directly over the bottom plate and fixed a plurality of bracing pieces that set up between holding ring and bottom plate, the first hole of stepping down is seted up on the holding ring, the second hole of stepping down is seted up on the bottom plate, the bracing piece is from last to increasing gradually down to the interval of the first hole axis of stepping down.

Through adopting above-mentioned technical scheme, when the probe was inserted and is located the support, its one end received the pore wall of first hole of stepping down spacing, the other end received the pore wall of second hole of stepping down spacing for the probe is difficult for empting under the reaction force of drive rack and soil, is favorable to pressing the probe into in the soil perpendicularly. The bracing piece is the slope setting and sets up between holding ring and bottom plate, plays the effect of supporting the location, helps improving the stability of holding ring and to the location effect of probe.

Optionally, the upside of holding ring can be dismantled and be connected with the deashing ring, the inner wall bottom of deashing ring is provided with the scraping ring, the circumference inner wall of scraping ring is provided with first rubber ring, the internal diameter of first rubber ring is not more than the internal diameter in first hole of stepping down.

By adopting the technical scheme, soil bodies inevitably adhere to the surface of the probe after the probe is pulled out of the soil, and if the soil bodies are not cleared away, the detection precision of other fields is easily influenced, so that the surface soil body of the probe needs to be cleared before detection. When the probe stretches into the support from top to bottom, the scraping ring can scrape the surface soil body and the dust of probe off and collect in the deashing ring to it influences the detection precision to avoid original soil body and dust. And then the dust cleaning ring is detached from the positioning ring so as to pour out the soil and dust collected in the dust cleaning ring. First rubber ring separates to keep off between link and probe, plays the effect of protection probe for the difficult quilt of probe surface is scraped the flower by scraping the ring.

Optionally, the number of the support rods is two, the opposite end surfaces of the two support rods are respectively provided with a horizontally extending chute, and a supporting plate is slidably arranged between the two chutes; the upside of layer board is provided with and is located the collection dirt ring under the deashing ring, the internal diameter of collection dirt ring reduces from top to bottom gradually, and the biggest internal diameter of collection dirt ring is greater than the biggest internal diameter of deashing ring.

Through adopting above-mentioned technical scheme, the dust collection ring sets up the downside at the deashing ring, plays the effect of secondary collection dirt to avoid soil body and dust to drop on the bottom plate, convenient clearance.

Optionally, threaded connection has solid fixed ring in the hole is stepped down to the second, gu fixed ring's circumference inner wall is fixed with the second rubber ring, the internal diameter of second rubber ring is not more than the diameter of probe, gu the hexagonal recess has been seted up to fixed ring's bottom surface.

By adopting the technical scheme, when the probe is pulled out of the soil, the fixing ring can scrape the soil on the surface of the probe, so that the surface smoothness and cleanliness of the probe are improved. The second rubber ring separates and blocks between solid fixed ring and probe, plays the effect that the protection probe is not scraped colored by solid fixed ring. In addition, because solid fixed ring threaded connection is in the second hole of stepping down, after the second rubber ring is because of being worn and torn by the stone etc. hard thing in the soil body, can stretch into the hexagon socket head cap recess with the screwdriver to unscrew solid fixed ring and tear open the trade.

In summary, the present application includes at least one of the following beneficial technical effects:

before the resistivity of the soil is detected, the probe extends into the support, and then the driving motor is started to enable the driving gear to rotate, so that the driving rack moves downwards and the probe is pressed into the soil, and the device is time-saving, labor-saving and high in working efficiency;

after the detection is finished, the linkage block can extend into the through hole through the linkage air cylinder, so that the probe is pulled out of the soil when the driving rack moves upwards, and the labor intensity is further reduced; before the probe is disassembled and assembled, an operator can move the top plate to a state of being staggered with the probe so as to extend or move the probe into or out of the bracket;

when the probe extends into the bracket from top to bottom, the scraping ring can scrape the original soil and dust on the surface of the probe off so as to collect the soil and dust in the ash cleaning ring and the dust collecting ring; when the probe moves out of the support from bottom to top, the fixing ring can scrape off soil adhered to the surface of the probe, so that the soil is prevented from influencing the precision of next detection.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a mounting bracket and a driving assembly in an embodiment of the present application.

Figure 3 is a partially sectioned schematic view highlighting an abutment assembly in an embodiment of the present application.

Fig. 4 is an exploded view of the mounting bracket and drive assembly in an embodiment of the present application.

FIG. 5 is a cross-sectional schematic view of a mounting bracket and drive assembly in an embodiment of the present application.

Fig. 6 is an enlarged schematic view at a in fig. 5.

Description of reference numerals:

1. a box body; 11. a housing; 12. a connecting box; 13. a moving wheel; 2. a probe; 21. a through hole; 3. a test host; 4. a mounting frame; 41. mounting a plate; 42. a top plate; 43. a support; 431. a base plate; 4311. a second abdicating hole; 4312. a fixing ring; 4313. a second rubber ring; 4314. an inner hexagonal groove; 432. a positioning ring; 4321. a first abdicating hole; 4322. a fastening groove; 433. a support bar; 4331. a chute; 5. a rotating assembly; 51. an upper hinge base; 511. a butt joint groove; 52. a lower hinge base; 53. a rotating shaft; 54. a rotational clearance; 6. an abutment assembly; 61. pulling the block; 62. a connecting rod; 63. a butting block; 64. a return spring; 7. a drive assembly; 71. a drive motor; 72. a drive gear; 73. a drive rack; 74. connecting blocks; 741. a connecting portion; 742. a linkage section; 75. a linkage cylinder; 751. a linkage block; 8. cleaning ash rings; 81. a fastening ring; 82. scraping rings; 83. a first rubber ring; 9. a support plate; 91. a dust collecting ring; 92. and a roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a soil resistivity tester. Referring to fig. 1, the soil resistivity tester comprises a box body 1, a probe 2 and a test host machine 3, wherein the probe 2 is used for contacting with soil to collect signals, the test host machine 3 is used for measuring and displaying detection values, and the probe 2 is electrically connected with the test host machine 3 through a lead during operation. The box body 1 in the embodiment comprises two shells 11 with one ends hinged to each other and a connecting box 12 arranged between the two shells 11, the shells 11 are detachably connected with the connecting box 12 in a clamping manner, the test host 3 is arranged in one of the shells 11, and a storage battery used for providing electric energy for the test host 3 is arranged in the other shell 11. The bottom of each housing 11 is provided with two moving wheels 13 for transferring the tank 1.

Referring to fig. 1 and 2, a mounting bracket 4 is detachably disposed on one side of the connection box 12, the mounting bracket 4 includes a mounting plate 41, a top plate 42 horizontally rotatably disposed on the mounting plate 41, and a bracket 43 fixedly disposed on the mounting plate 41, and the bracket 43 is located right below the top plate 42. The four corners of the mounting plate 41 are respectively connected to the connecting box 12 through a set of mounting bolts, so as to realize the detachable connection of the mounting frame 4 and the connecting box 12. In other embodiments, the detachable manner may be a snap-fit manner.

Referring to fig. 2 and 3, the top plate 42 is rotatably connected to the mounting plate 41 through the rotating assembly 5, the rotating assembly 5 includes an upper hinge seat 51, a lower hinge seat 52 located right below the upper hinge seat 51, and a rotating shaft 53 rotatably disposed between the upper hinge seat 51 and the lower hinge seat 52, the upper hinge seat 51 and the lower hinge seat 52 are both fixed to one side of the mounting plate 41 away from the connecting box 12, a rotating gap 54 is formed between the upper hinge seat 51 and the lower hinge seat 52, and the rotating shaft 53 is fixedly disposed at one end of the top plate 42 extending into the rotating gap 54, so that the top plate 42 can rotate around the rotating shaft 53.

Referring to fig. 2 and 3, in order to improve the stability of the top plate 42, the abutting assembly 6 is connected to the upper hinge base 51 for positioning the top plate 42 in a state of abutting against the mounting plate 41. The abutting assembly 6 comprises a pulling block 61 positioned on the upper side of the upper hinge seat 51, a connecting rod 62 fixed on the lower side of the pulling block 61, an abutting block 63 fixed on the lower side of the connecting rod 62 and a return spring 64 arranged between the pulling block 61 and the upper hinge, the connecting rod 62 is slidably arranged in the upper hinge seat 51 in a penetrating mode, and the return spring 64 is sleeved on the outer side of the connecting rod 62. The connecting rod 62 in this embodiment is provided in a cylindrical shape, and the length of each of the pulling block 61 and the abutting block 63 is greater than the diameter of the connecting rod 62, so that the connecting rod 62 cannot be removed from the upper hinge seat 51.

Referring to fig. 3, the bottom surface of the upper hinge base 51 is formed with an abutting groove 511 communicating with the rotation gap 54, and the depth of the abutting groove 511 is larger than the thickness of the abutting block 63. When the return spring 64 is in a natural state, the bottom end of the abutting block 63 is located in the rotating gap 54 and abuts against one side of the top plate 42, and the effect of blocking the top plate 42 from horizontally rotating is achieved. The return spring 64 exerts a downward force on the pull block 61 of the abutment block 63, which contributes to maintaining the abutment block 63 in a state of extending into the rotation gap 54. If the top plate 42 needs to be rotated, the pulling block 61 can be lifted up, so that the abutting block 63 completely extends into the abutting groove 511, and the abutting block 63 does not influence the rotation of the top plate 42.

Referring to fig. 2 and 4, a driving assembly 7 for pressing the probe 2 into the soil is arranged on the top plate 42, the driving assembly 7 comprises a driving motor 71 mounted on the top plate 42, a driving gear 72 fixedly connected with an output shaft of the driving motor 71, and a driving rack 73 meshed with one side of the driving gear 72, and the driving rack 73 is slidably arranged in the top plate 42 in the vertical direction. The drive motor 71 in this embodiment is a servo motor whose output shaft can rotate in the forward and reverse directions, and the power supply of the drive motor 71 can be provided by a battery mounted in the housing 11. When the driving motor 71 works, the driving gear 72 rotates with the output shaft of the driving motor 71, so that the driving rack 73 moves vertically. When the driving rack 73 moves downwards, the probe 2 positioned below the driving rack can be pressed into soil, and compared with a manual hammering mode, the driving rack has the effects of labor saving and convenience.

Referring to fig. 4 and 5, a connecting block 74 is fixed to a bottom end of a side wall of the driving rack 73, and the connecting block 74 includes a connecting portion 741 and a linkage portion 742 which are integrally formed, where the connecting portion 741 is fixedly disposed on the driving rack 73, and the linkage portion 742 is located on a side of the connecting portion 741 away from the driving rack 73. The link portion 742 is provided with a link cylinder 75, a piston rod of the link cylinder 75 horizontally faces the drive rack 73, and a link block 751 is fixed, and the link block 751 can horizontally move under the action of the link cylinder 75. The top end of the circumferential side wall of the probe 2 is provided with a through hole 21, the longitudinal sections of the through hole 21 and the linkage block 751 are circular in the embodiment, and the inner diameter of the through hole 21 is slightly larger than the diameter of the linkage block 751, so that the linkage block 751 can extend into the through hole 21. After the detection is finished, the linkage block 751 extends into the through hole 21 through the linkage air cylinder 75, the driving rack 73 moves upwards through the driving motor 71, and the probe 2 can move out of the soil under the action of the pulling force of the driving rack 73, so that the labor is saved and the convenience is realized.

Referring to fig. 4 and 5, the bracket 43 includes a bottom plate 431 fixed to the mounting plate 41 on the side away from the connection box 12, a positioning ring 432 located directly above the bottom plate 431, and two support rods 433 disposed between the positioning ring 432 and the bottom plate 431, and the bottom plate 431 is located on the lower side of the top plate 42. The top of bracing piece 433 is fixed on holding ring 432, the bottom mounting on bottom plate 431, and the interval of bracing piece 433 to holding ring 432 axis is from last to increasing gradually down, and it is effectual to holding ring 432's support location.

Referring to fig. 4 and 5, the middle portion of the positioning ring 432 is provided with a first yielding hole 4321, and an inner diameter of the first yielding hole 4321 is slightly larger than a diameter of the probe 2, so that the probe 2 can pass through the first yielding hole 4321. When the top plate 42 is rotated to abut against the mounting plate 41, the first abdicating hole 4321 is located directly below the drive rack 73, facilitating alignment of the probe 2 with the drive rack 73.

Referring to fig. 4 and 5, the middle portion of the bottom plate 431 is provided with a second yielding hole 4311, the central axes of the second yielding hole 4311 and the first yielding hole 4321 are collinear, and the inner diameter of the second yielding hole 4311 is greater than the inner diameter of the first yielding hole 4321. A fixing ring 4312 is connected to the second abdicating hole 4311 through a thread, a second rubber ring 4313 is fixed to the circumferential inner wall of the fixing ring 4312, and the inner diameter of the second rubber ring 4313 is equal to the diameter of the probe 2. Specifically, the connection structure of the fixing ring 4312 and the bottom plate 431 may be that an inner thread is disposed on a hole wall of the second abdicating hole 4311, and an outer thread matched with the inner thread is disposed on a circumferential side wall of the fixing ring 4312. In order to facilitate the detachment and installation of the fixing ring 4312, an inner hexagonal groove 4314 is formed in the bottom surface of the fixing ring 4312, and a central axis of the inner hexagonal groove 4314 is collinear with a central axis of the second abdicating hole 4311.

Referring to fig. 4 and 5, before inserting the probe 2 into the soil, the probe 2 sequentially passes through the first yielding hole 4321 and the second yielding hole 4311 from top to bottom, and the second rubber ring 4313 is deformed and pressed against the side wall of the probe 2 under the pressure, so as to initially position the probe 2, and the probe 2 is not prone to being skewed when extending into the soil under the pressure of the driving rack 73. In addition, when the probe 2 is pulled out of the soil, the fixing ring 4312 can also scrape off the soil adhered to the surface of the probe 2, so that the soil does not influence the next detection precision.

Referring to fig. 5 and 6, for the soil body of the lateral wall of the probe 2 is cleaned before the probe 2 is inserted into soil, the upper side of the positioning ring 432 is detachably connected with the ash removing ring 8, and the inner diameter of the ash removing ring 8 is gradually reduced from top to bottom, so that the ash removing ring 8 forms a funnel shape with a large opening and a small opening, and the collection is convenient. Specifically, the ash removal ring 8 and the positioning ring 432 in this embodiment are connected in a threaded fit manner, that is, the fastening ring 81 is integrally formed at the bottom of the ash removal ring 8, the upper end surface of the positioning ring 432 is provided with a fastening groove 4322, the outer wall of the fastening ring 81 is provided with an external thread, and the wall of the fastening groove 4322 is provided with an internal thread matched with the external thread. In other embodiments, the ash removal ring 8 and the positioning ring 432 can be connected by other methods such as clamping.

Referring to fig. 5 and 6, a scraping ring 82 is fixed at the bottom end of the circumferential inner wall of the dust removing ring 8, a first rubber ring 83 is arranged on the circumferential inner wall of the scraping ring 82, and the inner diameter of the first rubber ring 83 is equal to the diameter of the probe 2. When the probe 2 penetrates into the support 43 from top to bottom, the scraping ring 82 can scrape the soil and dust remaining on the surface of the probe 2 down to the dust removing ring 8, which is helpful for guaranteeing the detection precision. The first rubber ring 83 is blocked between the scraper ring 82 and the probe 2, and plays a role in protecting the probe 2.

Referring to fig. 4 and 5, in order to further collect the soil and dust falling from the surface of the probe 2, in this embodiment, a supporting plate 9 is slidably disposed on the upper side of the bottom plate 431, a dust collecting ring 91 located right below the dust removing ring 8 is fixed on the upper side of the supporting plate 9, the inner diameter of the dust collecting ring 91 is gradually reduced from top to bottom, so that a funnel shape with a large opening at the top and a small opening at the bottom is also formed, and the maximum inner diameter of the dust collecting ring 91 is greater than that of the dust removing ring 8, thereby facilitating the collection of the soil and dust falling from the dust removing ring 8.

Referring to fig. 4 and 5, the two opposite end surfaces of the two support rods 433 are respectively provided with a horizontally extending chute 4331, and the two sides of the chute 4331 along the extending direction thereof are both provided with openings. Two ends of the supporting plate 9 are slidably disposed in different sliding slots 4331, respectively, so that the supporting plate 9 can only move horizontally but not vertically. In order not to influence the penetration of the probe 2, the middle part of the supporting plate 9 is provided with a through hole for the probe 2 to penetrate out. When the dust collecting ring 91 is full of dust, the blade 9 can be horizontally moved out of the holder 43 for cleaning after the probe 2 is pulled out of the holder 43. In order to improve the smoothness of the movement of the supporting plate 9, rollers 92 are further arranged at four corners of the bottom of the supporting plate 9.

The implementation principle of the soil resistivity tester in the embodiment of the application is as follows: before detecting the resistivity of the soil, the pull block 61 is moved upwards to make the abutting block 63 extend into the abutting groove 511, and simultaneously the top plate 42 is horizontally rotated until the driving rack 73 is dislocated with the first abdicating hole 4321. The probe 2 sequentially penetrates through the first yielding hole 4321 and the second yielding hole 4311 from top to bottom, then the top plate 42 is rotated to abut against the mounting plate 41, so that the driving rack 73 is positioned right above the probe 2, then the driving gear 72 is rotated through the driving motor 71, and further the driving rack 73 moves downwards to gradually press the probe 2 into the soil. After the detection is finished, the linkage block 751 extends into the through hole 21 through the linkage air cylinder 75, and then the driving rack 73 is controlled to move upwards through the driving motor 71, so that the probe 2 can be gradually pulled out of the soil. Above-mentioned process need not manual hammering or extracts probe 2, labour saving and time saving, work efficiency is high.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a soil resistivity tester, includes box (1), is used for contacting probe (2) of soil and is used for measuring and showing test host computer (3) that detect numerical value, test host computer (3) set up in box (1), its characterized in that: one side of the box body (1) is detachably provided with a mounting rack (4), a driving assembly (7) for pressing the probe (2) into soil is arranged on the mounting rack (4), the driving assembly (7) comprises a driving motor (71) arranged on the mounting rack (4), a driving gear (72) fixedly connected with an output shaft of the driving motor (71) and a driving rack (73) meshed with one side of the driving gear (72), and the driving rack (73) can vertically move under the action of the driving motor (71); mounting bracket (4) are including setting up support (43) in drive rack (73) below, offer first hole (4321) and the second hole (4311) of stepping down that distributes along vertical direction on support (43), first hole (4321) and the second hole (4311) of stepping down all are located drive rack (73) under and can supply probe (2) to wear out.

2. The soil resistivity tester of claim 1, wherein: the bottom of drive rack (73) is provided with connecting block (74), be provided with linkage cylinder (75) on connecting block (74), the piston rod level of linkage cylinder (75) sets up and is fixed with linkage block (751) towards drive rack (73), through hole (21) that supply linkage block (751) level to penetrate are seted up to the top of probe (2).

3. A soil resistivity tester according to claim 2 wherein: the hole wall of the through hole (21) is provided with internal threads.

4. The soil resistivity tester of claim 1, wherein: mounting bracket (4) are still including dismantling mounting panel (41) and the horizontal rotation roof (42) of setting on mounting panel (41) of connection on box (1), support (43) are fixed to be set up on mounting panel (41), drive assembly (7) set up on roof (42) and are located the top of support (43).

5. The soil resistivity tester of claim 4, wherein: the top plate (42) is rotatably connected with the mounting plate (41) through a rotating assembly (5), the rotating assembly (5) comprises an upper hinged seat (51) fixedly arranged on one side of the mounting plate (41), a lower hinged seat (52) and a rotating shaft (53) rotatably arranged between the upper hinged seat (51) and the lower hinged seat (52), and the rotating shaft (53) is fixedly arranged at one end of the top plate (42); when the top plate (42) rotates to abut against the mounting plate (41), the driving rack (73) is located right above the first abdicating hole (4321).

6. The soil resistivity tester of claim 5, wherein: an abutting assembly (6) is connected in the upper hinge seat (51) and used for positioning the top plate (42) in a state of abutting against the mounting plate (41); the abutting assembly (6) comprises a pulling block (61), a connecting rod (62) fixed on the lower side of the pulling block (61), an abutting block (63) fixed on the lower side of the connecting rod (62) and a return spring (64) arranged between the pulling block (61) and the upper hinged seat (51), the pulling block (61) is positioned above the upper hinged seat (51), the connecting rod (62) penetrates through the upper hinged seat (51) in a sliding mode, and an abutting groove (511) for the abutting block (63) to completely extend into is formed in the bottom surface of the upper hinged seat (51); a rotating gap (54) is formed between the upper hinge seat (51) and the lower hinge seat (52), and when the return spring (64) is in a natural state, the bottom end of the abutting block (63) is located in the rotating gap (54).

7. The soil resistivity tester of claim 1, wherein: support (43) including set up bottom plate (431) on one side of mounting panel (41), be located holding ring (432) directly over bottom plate (431) and fixed a plurality of bracing pieces (433) of setting between holding ring (432) and bottom plate (431), first hole of stepping down (4321) is seted up on holding ring (432), the second hole of stepping down (4311) is seted up on bottom plate (431), bracing piece (433) to the interval of first hole of stepping down (4321) axis from last to crescent.

8. The soil resistivity tester of claim 7, wherein: the upside of holding ring (432) can be dismantled and be connected with deashing ring (8), the inner wall bottom of deashing ring (8) is provided with scrapes ring (82), the circumference inner wall of scraping ring (82) is provided with first rubber ring (83), the internal diameter of first rubber ring (83) is not more than the internal diameter of first hole of stepping down (4321).

9. The soil resistivity tester of claim 8, wherein: the number of the support rods (433) is two, the opposite end faces of the two support rods (433) are respectively provided with a horizontally extending chute (4331), and a supporting plate (9) is arranged between the two chutes (4331) in a sliding manner; the upside of layer board (9) is provided with and is located collection dirt ring (91) under deashing ring (8), the internal diameter of collection dirt ring (91) reduces gradually from top to bottom, and the biggest internal diameter of collection dirt ring (91) is greater than the biggest internal diameter of deashing ring (8).

10. The soil resistivity tester of claim 7, wherein: threaded connection has solid fixed ring (4312) in second hole of stepping down (4311), the circumference inner wall of solid fixed ring (4312) is fixed with second rubber ring (4313), the internal diameter of second rubber ring (4313) is not more than the diameter of probe (2), hexagonal groove (4314) have been seted up to the bottom surface of solid fixed ring (4312).