Field calibration device for level gauge or total station

Abstract

The utility model relates to the field of engineering calibration devices, and particularly discloses a field calibration device for a level gauge or a total station, which comprises a base, supporting legs, a target seat, a sliding rod, a sliding seat, a scale, a dial indicator and a gauge stand. According to the device, the base is erected at a measuring point and can be leveled through the supporting legs, the target seat and the sliding rod are installed on the base, the sliding seat and the ruler which can slide are installed on the sliding rod, the dial indicator is installed on the base, the level gauge is aligned with the ruler and keeps still during calibration, and the actual movement amount of the ruler can be accurately measured by moving the sliding seat and the dial indicator. And then the actual movement amount is compared with the reading of the level gauge, so that the level gauge can be calibrated on the use site.

Description

TECHNICAL FIELD

[0001] The utility model belongs to engineering calibration device field, especially relate to a field calibration device for level or total station. BACKGROUND

[0002] At present, the displacement monitoring of large structures such as bridge, tunnel engineering, structural engineering, water conservancy engineering and port engineering is more and more popular, but the calibration of the level, total station and other instruments used for monitoring is usually calibrated or tested by the measurement institute or inspection and testing agency under indoor standard conditions, and the actual use is affected by the environment, dust, temperature and humidity, and the complexity of the field working condition is very different from the test working condition, therefore, the measurement error cannot be directly reflected. Especially for those single sampling measurement, such as deflection measurement of different key sections in bridge load test, arch crown settlement of different sections in tunnel under certain working condition, dam settlement, etc., the error of single measurement of the instrument needs to be known to obtain more accurate field measurement data, but the existing level cannot be calibrated on site under the above-mentioned circumstances, resulting in large measurement error.

[0003] The disclosure of the above background art content is only used to assist in understanding the utility model concept and technical scheme of the utility model, and it does not necessarily belong to the prior art of the present patent application. In the absence of explicit evidence that the above-mentioned content has been disclosed on the filing date of the present patent application, the above-mentioned background art should not be used to evaluate the novelty and inventiveness of the present application. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a field calibration device for level or total station, so as to overcome the defect that the existing level cannot be calibrated on site during use, resulting in large measurement error under complex working condition.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a field calibration device for level or total station, which comprises a base and a target seat, the base is provided with a supporting leg, the target seat is detachably installed on the base, the target seat is provided with a sliding rod, the sliding rod is arranged in vertical direction, a sliding seat is arranged on the sliding rod, the sliding seat can slide along the sliding rod, a scale is installed on the sliding seat, a dial indicator is installed between the sliding seat and the target seat, and the measuring end of the dial indicator abuts against the sliding seat.

[0006] Preferably, in the above technical scheme, the supporting leg comprises a connecting column and a supporting block, one end of the connecting column is provided with a thread, the other end of the connecting column is bent to one side of the connecting column and fixedly connected with the top of the supporting block, the other end of the supporting block is provided with a sharp part, and the axis of the sharp part is parallel to the axis of the connecting column.

[0007] Preferably, in the above technical solution, a nail hole is formed through the top and bottom of the base, one end of the connecting column passes through the nail hole and is provided with a first nut and a second nut, and the first nut and the second nut abut against the top surface of the base and the bottom surface of the base, respectively.

[0008] Preferably, in the above technical solution, an auxiliary pressing block is arranged on one side of the supporting block, and the top of the auxiliary pressing block is provided with anti-skid lines.

[0009] Preferably, in the above technical solution, a first horizontal bubble is arranged on the base.

[0010] Preferably, in the above technical solution, the target base comprises a first base body and a second base body, three foot screws are connected between the first base body and the second base body and are uniformly distributed around the axis of the target base, a second horizontal bubble is arranged on the first base body, the bottom of the sliding rod is connected with the first base body, and the second base body is connected with the base through connecting bolts.

[0011] Preferably, in the above technical solution, the side of the sliding base is provided with an adjusting bolt, and when the adjusting bolt is tightened, the end of the adjusting bolt can abut against the side of the sliding rod, so as to limit the movement of the sliding base.

[0012] Preferably, in the above technical solution, the bottom of the ruler is hinged with the sliding base, so that the ruler can be folded to the top of the sliding base.

[0013] Preferably, in the above technical solution, a table stand is arranged on the base, and the dial gauge is detachably arranged on the table stand.

[0014] Preferably, in the above technical solution, a groove is arranged on the bottom of the sliding base, and the measuring end of the dial gauge can be clamped in the groove.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The calibration device in the utility model is erected at a measuring point and can be leveled through the supporting feet, the target base and the sliding rod are arranged on the base, the slidable sliding base and the ruler are arranged on the sliding rod, and the dial gauge is arranged on the base; when calibration is performed, the level is kept stationary relative to the ruler, the actual movement amount of the ruler can be accurately measured by moving the sliding base and the dial gauge, and the actual movement amount is compared with the reading of the level, so that the level can be calibrated on the use site.

[0017] 2. The utility model discloses a support leg includes connecting column and support block, when installing the tip of support block and horizontal plane are perpendicular state, make the base more stable when standing on the ground, through the first nut and second nut can adjust the extension length of support leg, thereby can adjust the levelness of base. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structure diagram of the utility model for the field calibration device of level or total station.

[0019] Fig. 2 It is the plan view of base and target seat and its accessory.

[0020] Main figure mark explanation:

[0021] 100-base, 110-support leg, 111-connecting column, 112-support block, 113-tip, 114-assistant pressing block, 120-pass through the nail hole, 130-first nut, 140-second nut, 150-first horizontal bubble;

[0022] 200-target seat, 201-first seat body, 202-second seat body, 203-foot screw, 210-sliding rod, 220-sliding seat, 221-groove, 230-ruler, 240-second horizontal bubble, 250-connecting bolt, 260-adjusting bolt;

[0023] 300-dial indicator, 310-table stand. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor all belong to the range of protection of the utility model.

[0025] In the description of the utility model, it is necessary to explain that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side" and the like is the orientation or positional relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, if the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the terms "first", "second", "third" are described, they are only for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0027] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the utility model.

[0028] As shown in Figs. 1-2 The field calibration device for the level or total station in the embodiment includes a base 100, a supporting leg 110, a connecting column 111, a supporting block 112, a pointed part 113, an auxiliary pressing block 114, a through nail hole 120, a first nut 130, a second nut 140, a first horizontal bubble 150, a target seat 200, a first seat body 201, a second seat body 202, a foot screw 203, a sliding rod 210, a sliding seat 220, a groove 221, a scale 230, a second horizontal bubble 240, a connecting bolt 250, an adjusting bolt 260, a dial indicator 300, and a table stand 310.

[0029] The base 100 is mounted with three supporting legs 110, three nail holes 120 are formed through the top and bottom of the base 100, the three nail holes 120 are evenly distributed with the central axis of the base 100 as the center, the supporting leg 110 is welded with a connecting column 111 and a supporting block 112, one end of the connecting column 111 is provided with a thread, the other end of the connecting column 111 is bent to one side of the connecting column 111 and is welded with the top of the supporting block 112, the other end of the supporting block 112 is provided with a pointed part 113, the axis of the pointed part 113 is parallel to the axis of the connecting column 111; one end of the connecting column 111 passes through the nail hole 120 and is mounted with a first nut 130 and a second nut 140, the first nut 130 and the second nut 140 can abut the top surface of the base 100 and the bottom surface of the base 100 respectively; a first horizontal bubble 150 is arranged on the base 100.

[0030] In addition, an auxiliary pressing block 114 is welded on one side of the supporting block 112, the top of the auxiliary pressing block 114 is provided with anti-skid lines, and the cross section of the auxiliary block is a triangular structure.

[0031] The target base 200 includes a first base body 201 and a second base body 202, three foot screws 203 are connected between the first base body 201 and the second base body 202, the three foot screws 203 are evenly distributed with the axis of the target base 200 as the center, a second horizontal bubble 240 is arranged on the first base body 201, the bottom of the sliding rod 210 is connected with the first base body 201, the second base body 202 is connected with the base 100 through a connecting bolt 250, when the foot screw 203 is rotated, the levelness of the first base body 201 can be adjusted, it should be noted that the foot screw 203 is a common component also used on a level or a total station, the internal structure is a known common sense, which will not be described in detail here. The surface of the sliding rod 210 is perpendicular to the surface of the first base body 201, the sliding seat 220 is sleeved on the sliding rod 210 and can move along the sliding rod 210, the adjusting bolt 260 is mounted on the side of the sliding seat 220, when the adjusting bolt 260 is tightened, the end of the adjusting bolt 260 can abut the side of the sliding rod 210, so as to limit the movement of the sliding seat 220, so that the sliding seat 220 is fixed at the position. The bottom of the scale 230 is hinged with the sliding seat 220, so that the scale 230 can be folded to the top of the sliding seat 220, in use, the scale 230 is unfolded upward and keeps parallel with the sliding rod 210, and a scale line is marked on the scale 230. A groove 221 is arranged on the bottom of the sliding seat 220.

[0032] The dial indicator 300 is fixedly installed on the base 100 through the dial indicator frame 310, the measuring end of the dial indicator 300 is an elastic column which can be extended, the measuring end extends upward and can be clamped into the groove 221; when installed, it is necessary to ensure that the measuring end of the dial indicator 300 keeps parallel with the sliding rod 210 and the scale 230.

[0033] Next, the operation method and working principle of the field calibration device for the level or total station in this embodiment are described in detail, so that those skilled in the art can better understand the utility model:

[0034] In use, the device is placed at the measurement point, the base 100 is leveled, the scale 230 is unfolded, the dial gauge 300 is zeroed, the scale 230 is measured for the first time by the erected level or total station, the measurement reading is Z1; then the position of the sliding seat 220 is adjusted, assuming that it is moved downward by a distance, the sliding seat 220 is fixed, the same position of the scale 230 is measured for the second time by the level or total station, the measurement reading is Z2, at this time the reading on the dial gauge 300 is δ; assuming that Z2-Z1=△, then△-δ is the indication error of single measurement; a plurality of indication errors can be obtained by multiple measurements, and the indication error can be corrected and judged by data processing.

[0035] In summary, the field calibration device for the level or total station in this embodiment is erected at the measurement point by the base 100 and can be leveled by the supporting leg 110, the target seat 200 and the sliding rod 210 are installed on the base 100, the slidable sliding seat and the scale 230 are installed on the sliding rod 210, the dial gauge 300 is installed on the base 100, the level is aligned with the scale 230 during calibration, the actual movement amount of the scale 230 can be accurately measured by moving the sliding seat and the dial gauge 300, and then the actual movement amount is compared with the reading of the level, so that the level can be calibrated on site.

[0036] The foregoing description of the specific exemplary embodiments of the utility model is for the purpose of illustration and example, and these descriptions are not intended to limit the utility model to the precise forms disclosed, and it is obvious that many changes and variations can be made according to the above-mentioned teaching, although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and they are not a limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, the purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can make modifications, replacements, variations and various different selections and changes to the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, as long as they are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A field calibration device for a level or a total station, comprising a base and a target seat, the base being provided with a supporting leg, and the target seat being detachably mounted on the base, characterized in that: a slide rod is mounted on the target seat, the slide rod being arranged in a vertical direction, a sliding seat being arranged on the slide rod and being slidable along the slide rod, a scale being mounted on the sliding seat, and a dial indicator being mounted between the sliding seat and the target seat, a measuring end of the dial indicator abutting against the sliding seat. The supporting leg comprises a connecting column and a supporting block, one end of the connecting column being provided with a thread, the other end of the connecting column being bent to one side of the connecting column and being fixedly connected to a top of the supporting block, the other end of the supporting block being provided with a pointed portion, an axis of the pointed portion being parallel to an axis of the connecting column.

2. The field calibration device for a level or a total station according to claim 1, characterized in that, A through hole is formed through a top and a bottom of the base, one end of the connecting column passing through the through hole and being provided with a first nut and a second nut, the first nut and the second nut abutting against a top surface of the base and a bottom surface of the base, respectively.

3. The field calibration device for a level or a total station according to claim 2, characterized in that, An auxiliary pressing block is arranged on one side of the supporting block, the auxiliary pressing block being provided with anti-skid lines on a top thereof.

4. The field calibration device for a level or a total station according to claim 3, characterized in that, A first horizontal bubble is arranged on the base.

5. The field calibration device for a level or a total station according to claim 1, characterized in that, The target seat comprises a first seat body and a second seat body, three foot screws being connected between the first seat body and the second seat body and being uniformly distributed around an axis of the target seat, a second horizontal bubble being arranged on the first seat body, a bottom of the slide rod being connected to the first seat body, and the second seat body being connected to the base by a connecting bolt.

6. The field calibration device for a level or total station of claim 1, wherein, An adjusting bolt is arranged on a side of the sliding seat, an end of the adjusting bolt being capable of abutting against a side of the slide rod when the adjusting bolt is tightened, so as to limit movement of the sliding seat.

7. The field calibration device for a level or a total station according to claim 1, characterized in that, A bottom of the scale is hingedly connected to the sliding seat, so as to enable the scale to be folded to a top of the sliding seat.

8. The field calibration device for a level or total station of claim 1, wherein, A table stand is arranged on the base, the dial indicator being detachably mounted on the table stand.

9. The field calibration device for a level or a total station according to claim 1, characterized in that, A recess is arranged on a bottom of the sliding seat, the measuring end of the dial indicator being capable of being clamped in the recess.

10. The field calibration device for a level or total station according to claim 9, characterized in that, ​

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