CN211236031U

CN211236031U - Ground resistance measuring apparatu

Info

Publication number: CN211236031U
Application number: CN201921783063.3U
Authority: CN
Inventors: 付子军; 徐跃华; 胡文霄; 陈贵鑫
Original assignee: Sichuan Jingzheng Construction Management Consulting Co Ltd
Current assignee: Sichuan Jingzheng Construction Management Consulting Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-08-11
Anticipated expiration: 2029-10-23

Abstract

The utility model relates to a ground resistance measuring apparatu belongs to ground resistance detection area, including the instrument body, instrument body internal rotation is provided with the pivot, coaxial fixedly connected with gyro wheel in the pivot, the rotation of going up the level of instrument body is provided with the rolling disc, fixed mounting has the motor on the rolling disc, coaxial fixedly connected with live-rollers on the output shaft of motor, the axis of gyro wheel is located two horizontal planes that are parallel to each other with the axis of live-rollers, the diapire and the live-rollers roof rolling contact of gyro wheel, the contact point of gyro wheel and live-rollers is passed to the extension line of rolling disc axis. When using ground resistance measuring apparatu, it is rotatory to drive live-rollers and gyro wheel through starter motor, and when the rotational speed of gyro wheel need to change, rotatory rolling disc makes the axis of motor output shaft and the axis of pivot constitute the angle change on the horizontal plane projection for the gyro wheel rotational speed changes, consequently liberates the incessantly pivot of rotating of staff, and makes gyro wheel rotational speed adjust fast, makes the instrument operation more convenient laborsaving.

Description

Ground resistance measuring apparatu

Technical Field

The utility model relates to an earth resistance detection area, in particular to earth resistance measuring apparatu.

Background

The earth resistance meter is a meter specially used for directly measuring the earth resistance value of various earthing devices. The device mainly comprises a hand generator, a current transformer, a potentiometer and a galvanometer. The grounding resistance meter has the advantages of wide measuring range and high resolution, the measuring range is from 0.01 omega to 1000 omega, the resolution is 0.01 omega, and the grounding resistance below 0.7 omega can be accurately measured.

Chinese patent with grant publication number CN207752071U discloses a ground resistance measuring instrument, including the resistance appearance body, be provided with on the resistance appearance body and be used for observing whether dial plate on the resistance appearance body is in horizontally round air level, resistance appearance body bottom screw-thread fit has several dead levers of perpendicular to horizontal plane, the resistance appearance body sets up the dead lever side and is provided with the backup pad, the dead lever passes the backup pad, it is provided with the fixed knob that is used for promoting the backup pad motion to lie in between resistance appearance body and the backup pad on the dead lever. When the ground resistance measuring instrument is used for measuring on soft ground, the fixing rod is matched with the supporting plate to be inserted into the ground, so that the purpose that the ground resistance measuring instrument can be horizontally and stably arranged on the ground under different environmental conditions is achieved.

However, be provided with mechanical pointer dial plate, knob and rocking handle on the current ground resistance measuring apparatu, because need wave the rocking handle above that in the measurement process to rotatory knob simultaneously, thereby rectify the instrument, when single operates the instrument, knob and rocking handle are operated respectively to both hands, need keep the instrument body stable again, and the operation is very inconvenient, and it also can increase operating personnel working strength to continuously rotate the rocking handle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ground resistance measuring apparatu has the laborsaving convenient advantage of messenger's instrument operation.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a ground resistance measuring apparatu, includes the instrument body, it is provided with the pivot to rotate along self length direction in the instrument body, coaxial fixedly connected with gyro wheel in the pivot, the instrument body is improved level and is rotated and be provided with the rolling disc, fixed mounting has the motor on the rolling disc, coaxial fixedly connected with live-rollers on the output shaft of motor, the axis of gyro wheel with the axis of live-rollers is located two horizontal planes that are parallel to each other, the diapire and the live-rollers roof rolling contact of gyro wheel, the contact point of gyro wheel and live-rollers is passed to the extension line of live-rollers axis.

Through the technical scheme, operating personnel is when using ground resistance measuring apparatu, at first the starter motor, it is rotatory to drive the live-rollers, it is rotatory to drive the gyro wheel through frictional force between live-rollers and the gyro wheel, thereby it is rotatory with this internal generator input shaft coaxial coupling's of instrument pivot to drive, when the slew velocity of pivot needs to change, only need rotatory rolling disc, the axis that makes motor output shaft and the axis of pivot constitute the angle change on the horizontal plane, thereby make the gyro wheel under the unchangeable condition of motor speed, the horizontal friction who receives perpendicular to self axis on the contact point with the live-rollers changes, thereby make the gyro wheel rotational speed change, consequently, the incessantly pivot of rotation of liberation staff, and can quick adjustment gyro wheel rotational speed, make the instrument operation more convenient laborsaving.

The utility model discloses further set up to: and a handle is arranged on the outer wall of the rotating disc along the radial direction of the rotating disc.

Through the technical scheme, when the rotating disc is rotated by an operator, the rotating disc can be rapidly rotated only by holding the handle, so that the rotating torque when the rotating disc is rotated is increased, the rotating disc is labor-saving, and the operation is rapid and convenient.

The utility model discloses further set up to: the instrument comprises an instrument body, a rotating disc, a handle, a fixing column and a fixing column, wherein the rotating disc is provided with a through hole along the axis of the rotating disc, the instrument body is fixedly provided with the fixing column penetrating through the through hole, the outer wall of the rotating disc is provided with a threaded hole penetrating into the through hole along the radial direction of the rotating disc, the handle is close to one end of the rotating disc, the handle is fixedly connected with a screw rod which is matched with the threaded hole in the coaxial mode, the screw rod is in threaded connection in the threaded hole, and.

Through above-mentioned technical scheme, operating personnel is in rotatory rolling disc to the gyro wheel rotational speed when suitable, and rotatory handle is through screw rod on the handle and the threaded fit of screw hole on the rolling disc for the screw rod supports tightly in the rolling disc on the fixed column fixed with the instrument body, thereby fixes the rolling disc at the present position fast, and the operation is convenient fast.

The utility model discloses further set up to: and anti-skid grains are arranged on the outer wall of the handle.

Through above-mentioned technical scheme, the anti-skidding line on hand has increased the frictional force between the staff and the handle when holding the handle for difficult appearance is slided when rotatory handle, and it is more convenient to rotate.

The utility model discloses further set up to: the one end coaxial rotation that the handle was kept away from to the screw rod is provided with the friction disc with fixed column looks adaptation.

Through above-mentioned technical scheme, when operating personnel rotated the handle and supported tight fixed column, the friction disc rotated on the screw rod stretched into the one end in the rotating ring through-hole to remain throughout with the state of fixed column outer wall looks adaptation, through the friction disc increase the handle support tight fixed column when and the area of contact between the fixed column, thereby increase frictional force, make the rolling disc fixed more firm, stability when increasing the rolling disc and fixing.

The utility model discloses further set up to: the outer wall cover of gyro wheel is equipped with anti-skidding cover.

Through above-mentioned technical scheme, the antiskid cover of gyro wheel outer wall can increase frictional force between gyro wheel and the live-rollers contact point, makes the gyro wheel rotate more stably, simultaneously, because antiskid cover is removable, and the antiskid cover replaces the gyro wheel and directly contacts with the live-rollers for when the live-rollers is followed the rolling disc and is rotated, the antiskid cover replaces the gyro wheel and produces wearing and tearing, promotion gyro wheel life.

The utility model discloses further set up to: set up along vertical direction on the roof of rolling disc and use the rolling disc axis as the arc waist shape hole at center, the fixed gag lever post of wearing to locate in waist shape hole that is provided with on the instrument body, the central angle that the radius at waist shape hole both ends constitutes is the acute angle, the live-rollers axis is on a parallel with the gyro wheel axis when the gag lever post is located waist shape hole one end.

Through above-mentioned technical scheme, at the rolling disc rotation in-process, waist shape hole position removes along with the rolling disc, make the gag lever post slide in waist shape hole, it makes to move waist shape hole tip to the gag lever post to rotate at the rolling disc simultaneously, the restriction rolling disc continues to rotate, thereby make the rolling disc can only be on a parallel with gyro wheel axis state in the live-rollers axis, and the live-rollers axis rotates with the gyro wheel axis and rotates between the projection constitution acute angle state on the horizontal plane, effectively avoid operating personnel excessive rotatory rolling disc to cause the gyro wheel rotational speed to drop to zero, promote instrument convenience in use.

The utility model discloses further set up to: the instrument body is provided with a dial along the circumferential direction of the rotating disc, and the dial is arranged below the rotating disc.

Through above-mentioned technical scheme, when operating personnel rotated the rolling disc, reference dial on the instrument body to directly perceivedly acquire the rotatory back gyro wheel rotational speed of rolling disc, make the instrument use more convenient.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

firstly, when an operator uses the grounding resistance measuring instrument, a motor is started to drive a rotating roller and a roller to rotate, when the rotating speed of the roller needs to be changed, a rotating disc is rotated, the axis of an output shaft of the motor and the axis of a rotating shaft are projected on a horizontal plane to form angle change, so that the rotating speed of the roller is changed, hands are liberated to rotate the rotating shaft ceaselessly, the rotating speed of the roller is adjusted quickly, and the instrument is more convenient and labor-saving to operate;

when the rotating disc is rotated to the appropriate rotating speed of the idler wheels, an operator rotates the handle, and the screw rod is tightly abutted against a fixed column fixed with the instrument body in the rotating disc through the threaded fit between the screw rod on the handle and the threaded hole on the rotating disc, so that the rotating disc is quickly fixed at the current position, and the operation is quick and convenient;

third, at the rolling disc rotation in-process, kidney-shaped hole position removes along with the rolling disc for the gag lever post slides in kidney-shaped hole, thereby makes the rolling disc can only be on a parallel with the gyro wheel axis state in the live-rollers axis, and rotate between the projection constitution acute angle state of live-rollers axis and gyro wheel axis on the horizontal plane, effectively avoids operating personnel to excessively rotate the rolling disc and causes the gyro wheel rotational speed to drop to zero, promotes instrument convenience in use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Reference numerals: 1. an instrument body; 11. a rotating shaft; 2. a roller; 21. an anti-slip sleeve; 3. rotating the disc; 31. a motor; 32. a rotating roller; 33. a through hole; 34. a threaded hole; 35. a waist-shaped hole; 4. a handle; 41. a screw; 42. anti-skid lines; 43. a friction plate; 5. fixing a column; 6. a limiting rod; 7. a dial.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the ground resistance measuring instrument includes an instrument body 1, a rotor generator 31 is arranged in the instrument body, an input end of the generator 31 is a rotating shaft 11, and the rotating shaft 11 is horizontally and rotatably arranged on the instrument body 1 and penetrates out of the instrument body 1. The coaxial fixedly connected with gyro wheel 2 of the outer one end of instrument body 1 is worn out to pivot 11, and the cover is equipped with round antiskid cover 21 on the outer wall of gyro wheel 2, and antiskid cover 21 material is rubber, and antiskid cover 21 is removable.

As shown in fig. 1 and 2, a fixed and extended mounting platform is arranged below the roller 2 on the instrument body 1, a rotating disc 3 is arranged on the top wall of the mounting platform in a rotating manner, and the axis of the rotating disc 3 is arranged vertically. A supporting plate is fixed on the top wall of the rotating disc 3, a rotating roller 32 horizontally rotates on the supporting plate, a motor 31 is further fixedly installed on the top wall of the rotating disc 3, and an output shaft of the motor 31 is coaxially and fixedly connected with one end of the rotating roller 32. The rotating roller 32 is positioned below the roller 2, the outer wall of the anti-skid sleeve 21 on the roller 2 is contacted with the top side wall of the rotating roller 32, and the extension line of the axis of the rotating disc 3 passes through the contact point of the anti-skid sleeve 21 on the roller 2 and the rotating roller 32.

As shown in fig. 1 and 2, when the axis of the rotating roller 32 is parallel to the axis of the roller 2, the motor 31 drives the rotating roller 32 to rotate, and the roller 2 is driven to rotate by friction, the rotating speed of the roller 2 reaches the maximum. When the rotating disc 3 rotates to the point that the projection of the axis of the rotating roller 32 and the axis of the roller 2 on the horizontal plane intersects to form an included angle, the rotating speed of the roller 2 changes, and the rotating speed of the roller 2 is gradually reduced to zero in the process of the included angle of 0-90 degrees.

As shown in fig. 1 and 2, an arc-shaped waist-shaped hole 35 is formed in the rotating disc 3 and centered on the axis of the rotating disc 3, and the waist-shaped hole 35 penetrates through the rotating disc 3 in the vertical direction. Be fixed with vertical gag lever post 6 on the mounting platform roof, the horizontal cross slope of gag lever post 6 is circular, and gag lever post 6 slides and wears to establish again in waist shape hole 35. The central angle formed by the radius of the two ends of the kidney-shaped hole 35 on the horizontal plane is an acute angle, and when the limiting rod 6 is positioned at one end of the kidney-shaped hole 35, the axis of the rotating roller 32 is parallel to the axis of the roller 2.

As shown in fig. 1 and 2, a through hole 33 penetrating through the rotating disc 3 is coaxially formed in the rotating disc 3 along the axis of the rotating disc, a fixing column 5 coaxially penetrating through the through hole 33 is fixed on the top surface of the mounting platform, a threaded hole 34 penetrating into the through hole 33 is radially formed in the outer wall of the rotating disc 3 along the axis of the rotating disc, and the axis of the threaded hole 34 is parallel to the axis of the rotating roller 32. A screw rod 41 is connected with the threaded hole 34 in an internal thread mode, a handle 4 is coaxially fixed at one end, extending out of the outer wall of the rotating disc 3, of the screw rod 41, and anti-skidding threads 42 are arranged on the outer wall of the handle 4. One end of the screw rod 41 extending into the through hole 33 rotates to form a friction plate 43, and the friction plate 43 is arc-shaped on one side layer close to the axis of the through hole 33 and is matched with the outer wall of the fixing column 5. A dial 7 for displaying the rotating speed of the roller 2 after the rotating disc 3 rotates is etched on the top wall of the mounting platform along the axis of the rotating disc 3.

The specific working process is as follows: when an operator uses the grounding resistance measuring instrument, the motor 31 is firstly started to drive the rotating roller 32 to rotate, the roller 2 is driven to rotate through the friction force between the rotating roller 32 and the roller 2, and therefore the rotating shaft 11 coaxially connected with the input shaft of the generator 31 in the instrument body 1 is driven to rotate. When the axis of the rotating roller 32 is parallel to the axis of the roller 2, the contact point of the roller 2 and the rotating roller 32 receives the horizontal friction force which is maximally staggered and vertical to the axis of the roller 2, and the rotating speed of the roller 2 and the rotating shaft 11 reaches the fastest speed. When the rotating speed of the rotating shaft 11 needs to be reduced, only the rotating disc 3 needs to be rotated, so that the projection of the axis of the output shaft of the motor 31 and the axis of the rotating shaft 11 on a horizontal plane forms an angle change. So that the roller 2 is subjected to horizontal friction perpendicular to the axis of the roller 2 at the contact point with the rotating roller 32 under the condition that the rotating speed of the motor 31 is unchanged, and the rotating speed of the roller 2 is reduced. Therefore, hands are liberated to rotate the rotating shaft 11 ceaselessly, and the rotating speed of the roller 2 can be adjusted rapidly, so that the instrument is more convenient and labor-saving to operate.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a ground resistance measuring apparatu, includes instrument body (1), it is provided with pivot (11), its characterized in that to rotate along self length direction in instrument body (1): coaxial fixedly connected with gyro wheel (2) on pivot (11), instrument body (1) is improved level and is rotated and be provided with rolling disc (3), fixed mounting has motor (31) on rolling disc (3), coaxial fixedly connected with live-rollers (32) on the output shaft of motor (31), the axis of gyro wheel (2) with the axis of live-rollers (32) is located two horizontal planes that are parallel to each other, the diapire and the live-rollers (32) roof rolling contact of gyro wheel (2), the contact point of gyro wheel (2) and live-rollers (32) is passed to the extension line of rolling disc (3) axis.

2. The ground resistance measuring instrument according to claim 1, wherein: and a handle (4) is arranged on the outer wall of the rotating disc (3) along the radial direction of the rotating disc.

3. A ground resistance measuring instrument according to claim 2, characterized in that: through-hole (33) have been seted up along self axis on rolling disc (3), fixed being provided with on instrument body (1) wears to locate fixed column (5) in through-hole (33), radially set up along self on the outer wall of rolling disc (3) and open screw hole (34) to the through-hole (33) in, handle (4) are close to the coaxial fixedly connected with of rolling disc (3) one end and screw hole (34) to screw rod (41) of adaptation, screw rod (41) threaded connection is in screw hole (34), the one end butt that handle (4) were kept away from to screw rod (41) is on the outer wall of fixed column (5).

4. A ground resistance measuring instrument according to claim 3, characterized in that: the outer wall of the handle (4) is provided with anti-skid grains (42).

5. A ground resistance measuring instrument according to claim 3, characterized in that: and a friction plate (43) matched with the fixing column (5) is coaxially and rotatably arranged at one end, far away from the handle (4), of the screw rod (41).

6. The ground resistance measuring instrument according to claim 1, wherein: the outer wall of the roller (2) is sleeved with an anti-skidding sleeve (21).

7. The ground resistance measuring instrument according to claim 1, wherein: arc waist shape hole (35) that use rolling disc (3) axis as the center are seted up along vertical direction on the roof of rolling disc (3), fixed gag lever post (6) of wearing to locate in waist shape hole (35) that are provided with on instrument body (1), the central angle that the radius at waist shape hole (35) both ends constitutes is the acute angle, rotating roller (32) axis is on a parallel with gyro wheel (2) axis when gag lever post (6) are located waist shape hole (35) one end.

8. The ground resistance measuring instrument according to claim 1, wherein: the instrument body (1) is provided with a dial (7) along the circumferential direction of the rotating disc (3), and the dial (7) is arranged below the rotating disc (3).