CN214747922U - Novel engineering measurement is with horizontal calibration device - Google Patents
Novel engineering measurement is with horizontal calibration device Download PDFInfo
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- CN214747922U CN214747922U CN202120823874.2U CN202120823874U CN214747922U CN 214747922 U CN214747922 U CN 214747922U CN 202120823874 U CN202120823874 U CN 202120823874U CN 214747922 U CN214747922 U CN 214747922U
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Abstract
The utility model belongs to the technical field of engineering measuring instrument appliances, in particular to a novel horizontal calibration device for engineering measurement, which comprises a base, wherein the upper end of the base is provided with a supporting platform, the upper end of the supporting platform is provided with a rotary platform, the lower end of a first supporting rod is provided with an adjusting fixture block, the leveling instrument is used for detecting whether the engineering measuring instrument is positioned at a horizontal position or not through the arrangement of the leveling instrument, the three-arranged leveling instrument can be used for carrying out independent horizontal adjustment on a second supporting rod, a plane principle can be determined through three points which are not collinear, the rotary platform is ensured to be positioned at the horizontal position, thereby ensuring the levelness of the engineering measuring instrument, simultaneously, the leveling instrument and the rotary platform are not positioned at the same platform, when the engineering measuring instrument is arranged above the rotary platform, the leveling instrument can not be contacted with the leveling instrument, thereby not only avoiding the abrasion of the engineering measuring instrument and the leveling instrument caused by mutual friction, and the calibration effect of the horizontal calibration device is further ensured.
Description
Technical Field
The utility model belongs to the technical field of engineering measuring instrument articles for use equipment, concretely relates to novel engineering is horizontal calibration for measurement device.
Background
The engineering measuring instrument is a measuring instrument for various aspects of orientation, distance measurement, angle measurement, height measurement, mapping, photogrammetry and the like required by measurement in planning design, construction and operation management stages of engineering construction.
Calibration refers to a set of operations for determining the error in the value of an indicator of a measuring instrument or measuring system under specified conditions, or a set of operations for determining the relationship between the value represented by a material measure or standard substance and a corresponding known value measured under specified conditions, and the calibration result can be used to assess the error in the value of an indicator of a measuring instrument, measuring system or material measure, or to assign a value to a mark on any scale.
In the engineering measurement process, the measuring instrument must be placed horizontally, at the moment, the height adjustment of three legs of a tripod is vital, whether the measuring instrument can be placed horizontally depends on the height adjustment of the three legs of the tripod, the existing tripod is adjusted by loosening locking bolts on the legs, the outer legs are drawn out for a certain length and then placed on the ground, whether the tripod is placed horizontally is determined by a level gauge, if the tripod is not placed horizontally, the three legs are finely adjusted until the tripod is placed horizontally, the operation process is complicated, the measurement efficiency of the engineering measurement is seriously influenced, and some level calibration devices for engineering measurement are used for installing the level gauge at the upper end of a rotary platform, so that the mutual friction between the engineering measuring instrument and the level gauge can be caused.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a novel level calibrating device for engineering survey, which is used for detecting whether an engineering measuring instrument is positioned at a horizontal position or not through the arrangement of a level gauge, the level gauges arranged in three ways can be used for carrying out independent horizontal adjustment on a second supporting rod, and a plane principle can be determined through three points which are not collinear, so that a rotary platform is ensured to be positioned at a horizontal position, thereby ensuring the levelness of the engineering measuring instrument, meanwhile, the level gauge and the rotary platform are not positioned at the same platform, when the engineering measuring instrument is arranged above the rotary platform, the engineering measuring instrument can not be contacted with the level gauge, thereby not only avoiding the abrasion caused by mutual friction between the engineering measuring instrument and the level gauge, but also further ensuring the calibrating effect of the level calibrating device, under the condition that no external force is applied, an adjusting fixture block is tightly attached to the second supporting rod under the action of a telescopic spring, and make the second bracing piece be in stable state, when the use height to horizontal calibration device was adjusted to needs, make two piece regulation fixture blocks of same group carry out the motion of drawing close each other through promoting the piece, and produce the effort to expanding spring and make its shrink deformation, then adjust fixture block and corresponding second bracing piece alternate segregation, adjust the fixture block promptly and no longer produce the effort to the second bracing piece, then can adjust the length that the second bracing piece stretches out first bracing piece, and then realize the adjustment to horizontal calibration device use height, after the adjustment, loosen and adjust the fixture block, then expanding spring resets, then adjust the fixture block and continue to produce the characteristics of effort to the second bracing piece.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel level calibration for engineering survey device, includes the base, the upper end of base is provided with a supporting bench, the upper end of a supporting bench is provided with rotary platform, the inboard of base is provided with connects the fixture block, the lower extreme of connecting the fixture block is provided with first bracing piece, the inboard of first bracing piece is provided with the sliding tray, the lower extreme of first bracing piece is provided with the second bracing piece, the lower extreme of first bracing piece is provided with adjusts the fixture block, the right-hand member of adjusting the fixture block is provided with first slip case, the left end of adjusting the fixture block is provided with the second slip case, the upper end of adjusting the fixture block is provided with limit slide, the inboard of first slip case is provided with expanding spring.
Preferably, the supporting table is of a cylindrical structure, the upper end of the supporting table is provided with three levels, the mounting positions of the three levels are all located right above the corresponding first supporting rods, the height of each level is one tenth of the height of the rotating platform, and the height of the supporting table is the same as the height of the rotating platform; through the setting of spirit level, whether be used for detecting engineering measuring instrument to be located horizontal position, the spirit level of three setting not only can be used for carrying out solitary horizontal adjustment to the second bracing piece, and can confirm a planar principle through three points that are not collinear, guarantee rotary platform is located horizontally position, thereby guarantee engineering measuring instrument's levelness, do not be located same platform through spirit level and rotary platform simultaneously, when engineering measuring instrument installs in rotary platform top, can not produce the contact with the spirit level, not only avoid the wearing and tearing that engineering measuring instrument and spirit level caused because of the looks mutual friction like this, and further guarantee horizontal calibration device's calibration effect.
Preferably, the connecting clamping blocks are arranged in a rectangular structure, the upper parts of the connecting clamping blocks are arc-shaped, the number of the connecting clamping blocks is three, a connecting shaft is arranged on the inner side of each connecting clamping block, the connecting shaft penetrates through the inner sides of the connecting clamping blocks, two ends of the connecting shaft extend into the inner side of the base, and the connecting clamping blocks can rotate by taking the connecting shaft as a center; through the setting of connecting the fixture block for the swing joint of first bracing piece and base, through the setting of connecting axle, the adjustment of angle when realizing using first bracing piece.
Preferably, the first support rods are arranged in a rectangular structure, the number of the first support rods is three, and two first inner grooves are formed in the inner side of each first support rod; through the setting of first inside groove for the slip of second bracing piece at first bracing piece inboard, and then realize according to different needs of in-service use, the adjustment of level calibration device use height.
Preferably, the second support rods are arranged in a cylindrical structure, every two second support rods form a group, a horizontal connecting rod is arranged between the two second support rods in the same group, and the diameter of the outer ring of each second support rod is matched with that of the inner ring of the first inner groove; through the setting of second bracing piece, can provide different use heights for horizontal calibration device, and then improve the flexibility that horizontal calibration device used, through horizontal connecting rod's setting, guarantee two second bracing pieces of same set of when carrying out height control, are in horizontal position all the time.
Preferably, every two adjusting clamping blocks are combined into a group, the front end of each adjusting clamping block is provided with a pushing block, the pushing block is arranged in a rectangular structure, one end, which is not connected with the telescopic spring, of each adjusting clamping block is arranged in an arc-shaped structure, the size of the arc-shaped structure is matched with the diameter of the outer ring of the second supporting rod, and the left end and the right end of the telescopic spring are fixedly connected with the adjusting clamping blocks; under the condition of not applying external force, adjust the fixture block and closely laminate mutually with the second bracing piece under expanding spring's effect, and make the second bracing piece be in stable state, when the use height to horizontal calibrating device is adjusted to needs, make two piece regulation fixture blocks of same group carry out the motion of drawing close each other through promoting the piece, and produce the effort to expanding spring and make its shrink deformation, then adjust fixture block and corresponding second bracing piece alternate segregation, adjust the fixture block promptly and no longer produce the effort to the second bracing piece, then can adjust the length that the second bracing piece stretches out first bracing piece, and then realize the adjustment to horizontal calibrating device use height, after the adjustment, loosen the regulation fixture block, then expanding spring resets, then adjust the fixture block and continue to produce the effort to the second bracing piece.
Preferably, the first sliding box and the second sliding box are both arranged in a rectangular structure, two ends of the first sliding box and the second sliding box are both arranged in an opening manner, the left end of the first sliding box is fixedly connected with the adjusting fixture block, the right end of the second sliding box is fixedly connected with the adjusting fixture block, the size of the outer ring of the second sliding box is matched with that of the inner ring of the first sliding box, and the front end of the second sliding box is provided with a limiting plate; when two adjusting fixture blocks of the same group move close to each other, the first sliding box and the second sliding box slide synchronously, and the first sliding box and the second sliding box are arranged to protect the extension spring and increase the acting force of the adjusting fixture blocks when the second supporting rod is fixed, so that the safety of the horizontal calibrating device during use is improved.
Preferably, every two limiting sliding blocks form a group, and the size of each limiting sliding block is matched with that of the corresponding sliding groove; through the setting of spacing slider for adjust the fixture block and be connected with first bracing piece.
Compared with the prior art, the beneficial effects of the utility model are that: the three levels can be used for carrying out independent horizontal adjustment on the second supporting rod, and can ensure that the rotary platform is positioned at the horizontal position by the principle that three non-collinear three points can determine a plane, thereby ensuring the levelness of the engineering measuring instrument, meanwhile, the levels and the rotary platform are not positioned on the same platform, when the engineering measuring instrument is arranged above the rotary platform, the engineering measuring instrument can not be contacted with the levels, thereby not only avoiding the abrasion of the engineering measuring instrument and the levels caused by mutual friction, but also further ensuring the calibration effect of the horizontal calibration device, under the condition of not applying external force, the adjusting fixture block is tightly attached to the second supporting rod under the action of the expansion spring, and the second supporting rod is in a stable state, when the use height of the horizontal calibration device needs to be adjusted, the two adjusting clamping blocks in the same group move close to each other through the pushing block, the telescopic spring generates acting force to enable the telescopic spring to contract and deform, then the adjusting clamping blocks are separated from the corresponding second supporting rods, namely the adjusting clamping blocks do not generate acting force on the second supporting rods, then the length of the second supporting rods extending out of the first supporting rods can be adjusted, further, the use height of the horizontal calibration device is adjusted, after the adjustment is finished, the adjusting clamping blocks are loosened, then the telescopic spring resets, then the adjusting clamping blocks continue to generate acting force on the second supporting rods, when the two adjusting clamping blocks in the same group move close to each other, the first sliding box and the second sliding box synchronously slide, and through the arrangement of the first sliding box and the second sliding box, the horizontal calibration device not only can be used for protecting the telescopic spring, and the acting force of the adjusting clamping block on the second supporting rod during fixing can be increased, and the safety of the horizontal calibration device during use is further improved.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a front view of the present invention;
fig. 2 is a schematic structural view of a support table of the present invention;
fig. 3 is a schematic view of a three-dimensional structure of the adjusting clamping block of the present invention;
fig. 4 is a schematic view of a front view cross-sectional structure of the middle adjusting fixture block of the present invention;
fig. 5 is a schematic top view of the adjusting block of the present invention;
fig. 6 is a schematic structural view of the first support rod of the present invention;
FIG. 7 is a schematic structural view of a second slide box according to the present invention;
in the figure: 1. a base; 2. a support table; 21. a level gauge; 3. rotating the platform; 4. connecting a clamping block; 41. a connecting shaft; 5. a first support bar; 51. a first inner tank; 52. a sliding groove; 6. a second support bar; 61. a horizontal connecting rod; 7. adjusting the clamping block; 71. a first slide box; 72. a second slide box; 721. a limiting plate; 73. a limiting slide block; 74. a tension spring; 75. and (4) pushing the block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-7, the present invention provides the following technical solutions: the utility model provides a novel level calibration for engineering survey device, includes base 1, the upper end of base 1 is provided with brace table 2, the upper end of brace table 2 is provided with rotary platform 3, the inboard of base 1 is provided with connects fixture block 4, the lower extreme of connecting fixture block 4 is provided with first bracing piece 5, the inboard of first bracing piece 5 is provided with sliding tray 52, the lower extreme of first bracing piece 5 is provided with second bracing piece 6, the lower extreme of first bracing piece 5 is provided with adjusts fixture block 7, the right-hand member of adjusting fixture block 7 is provided with first slip case 71, the left end of adjusting fixture block 7 is provided with second slip case 72, the upper end of adjusting fixture block 7 is provided with spacing slider 73, the inboard of first slip case 71 is provided with expanding spring 74.
Specifically, the supporting table 2 is of a cylindrical structure, the levels 21 are arranged at the upper end of the supporting table 2, the number of the levels 21 is three, the mounting positions of the three levels 21 are all located right above the corresponding first supporting rods 5, the height of each level 21 is one tenth of the height of the corresponding rotating platform 3, and the height of the supporting table 2 is the same as that of the corresponding rotating platform 3; through the setting of spirit level 21 for whether the detection engineering measuring instrument is located horizontal position, spirit level 21 of three setting not only can be used for carrying out solitary horizontal adjustment to second bracing piece 6, and can confirm a planar principle through the three points of collineation not, guarantee rotary platform 3 is located the horizontally position, thereby guarantee engineering measuring instrument's levelness, do not be located same platform through spirit level 21 and rotary platform 3 simultaneously, when the engineering measuring instrument is installed in rotary platform 3 top, can not produce the contact with spirit level 21, not only avoid the wearing and tearing that engineering measuring instrument and spirit level 21 caused because of the friction each other like this, and further guarantee horizontal calibrating device's calibration effect.
Specifically, the connecting fixture blocks 4 are arranged in a rectangular structure, the upper parts of the connecting fixture blocks 4 are arc-shaped, the number of the connecting fixture blocks 4 is three, the inner side of each connecting fixture block 4 is provided with a connecting shaft 41, the connecting shafts 41 penetrate through the inner sides of the connecting fixture blocks 4, two ends of each connecting fixture block extend into the inner side of the base 1, and the connecting fixture blocks 4 can rotate by taking the connecting shafts 41 as centers; through the setting of connecting fixture block 4 for the swing joint of first bracing piece 5 and base 1, through the setting of connecting axle 41, the angle adjustment when realizing using first bracing piece 5.
Specifically, the first support rods 5 are arranged in a rectangular structure, the number of the first support rods 5 is three, and two first inner grooves 51 are formed in the inner side of each first support rod 5; the first inner groove 51 is used for the sliding of the second support rod 6 at the inner side of the first support rod 5, so that the use height of the horizontal calibration device can be adjusted according to different requirements of actual use.
Specifically, the second support rods 6 are arranged in a cylindrical structure, every two second support rods 6 form a group, a horizontal connecting rod 61 is arranged between the two second support rods 6 in the same group, and the diameter of the outer ring of each second support rod 6 is matched with the diameter of the inner ring of the first inner groove 51; through the setting of second bracing piece 6, can provide different use heights for horizontal calibration device, and then improve the flexibility that horizontal calibration device used, through the setting of horizontal connecting rod 61, guarantee two second bracing pieces 6 of the same set of when carrying out height control, be in horizontal position all the time.
Specifically, every two adjusting fixture blocks 7 form a group, the front end of each adjusting fixture block 7 is provided with a pushing block 75, the pushing block 75 is arranged in a rectangular structure, one end, which is not connected with the telescopic spring 74, of each adjusting fixture block 7 is arranged in an arc-shaped structure, the size of the arc-shaped structure is matched with the diameter of the outer ring of the second support rod 6, and the left end and the right end of the telescopic spring 74 are fixedly connected with the adjusting fixture blocks 7; under the condition of no external force, the adjusting fixture block 7 is tightly attached to the second support rod 6 under the action of the extension spring 74, and the second support rod 6 is in a stable state, when the using height of the horizontal calibration device needs to be adjusted, the two adjusting fixture blocks 7 in the same group move close to each other through the pushing block 75, and generates acting force to the extension spring 74 to make it contract and deform, then adjusts the fixture block 7 to separate from the corresponding second support rod 6, namely, the adjusting fixture block 7 does not generate acting force on the second supporting rod 6 any more, and then the length of the second supporting rod 6 extending out of the first supporting rod 5 can be adjusted, thereby realizing the adjustment of the using height of the horizontal calibration device, when the adjustment is finished, the adjusting fixture block 7 is loosened, then the extension spring 74 is reset, and then the regulating latch 7 continues to exert force on the second support rod 6.
Specifically, the first sliding box 71 and the second sliding box 72 are both arranged in a rectangular structure, two ends of the first sliding box 71 and the second sliding box 72 are both arranged in an open manner, the left end of the first sliding box 71 is fixedly connected with the adjusting fixture block 7, the right end of the second sliding box 72 is fixedly connected with the adjusting fixture block 7, the size of the outer ring of the second sliding box 72 is matched with that of the inner ring of the first sliding box 71, and the front end of the second sliding box 72 is provided with a limit plate 721; when two adjusting fixture blocks 7 in the same group move closer to each other, the first sliding box 71 and the second sliding box 72 slide synchronously, and through the arrangement of the first sliding box 71 and the second sliding box 72, the telescopic spring 74 can be protected, the acting force of the adjusting fixture blocks 7 on the fixing of the second supporting rod 6 can be increased, and the use safety of the horizontal calibrating device is further improved.
Specifically, two of the limiting sliding blocks 73 form a group, and the size of the limiting sliding blocks 73 is matched with that of the sliding grooves 52; the limiting slide block 73 is used for adjusting the connection between the fixture block 7 and the first support rod 5.
The working principle and the using process of the invention are as follows: when the device is used, the horizontal calibration device is firstly placed at a position to be used, the angle of the first supporting rod 5 is adjusted when the device is used by arranging the connecting block 4 and is used for movably connecting the first supporting rod 5 and the base 1, the angle of the first supporting rod 5 is adjusted by arranging the connecting shaft 41, then whether the engineering measuring instrument is positioned at the horizontal position or not is detected by arranging the level gauge 21, the three arranged level gauges 21 can be used for independently and horizontally adjusting the second supporting rod 6, a plane principle can be determined by three non-collinear three points, the rotating platform 3 is ensured to be positioned at the horizontal position, the levelness of the engineering measuring instrument is ensured, meanwhile, the engineering measuring instrument is not positioned at the same platform through the level gauge 21 and the rotating platform 3, when the engineering measuring instrument is arranged above the rotating platform 3, the engineering measuring instrument is not contacted with the level gauge 21, and abrasion caused by mutual friction of the engineering measuring instrument and the level gauge 21 is avoided, when external force is not applied, the adjusting fixture block 7 is tightly attached to the second support rod 6 under the action of the telescopic spring 74, and the second support rod 6 is in a stable state, when the use height of the horizontal calibration device needs to be adjusted, the two adjusting fixture blocks 7 in the same group move close to each other through the pushing block 75, the telescopic spring 74 generates acting force to enable the telescopic spring to contract and deform, then the adjusting fixture block 7 is separated from the corresponding second support rod 6, namely the adjusting fixture block 7 does not generate acting force on the second support rod 6, then the length of the second support rod 6 extending out of the first support rod 5 can be adjusted, further the use height of the horizontal calibration device is adjusted, after the adjustment is finished, the adjusting fixture block 7 is loosened, then the telescopic spring 74 is reset, then the adjusting fixture block 7 continues to generate acting force on the second support rod 6, when two adjusting fixture blocks 7 in the same group move close to each other, the first sliding box 71 and the second sliding box 72 slide synchronously, through the arrangement of the first sliding box 71 and the second sliding box 72, not only can be used for protecting the extension spring 74, but also can increase the acting force of the adjusting fixture blocks 7 for fixing the second support rod 6, through the arrangement of the first inner groove 51, the second support rod 6 slides on the inner side of the first support rod 5, through the arrangement of the horizontal connecting rod 61, the two second support rods 6 in the same group are ensured to be always in a horizontal position when the height is adjusted, through the arrangement of the limiting slide block 73, the adjusting fixture blocks 7 are connected with the first support rod 5, and further, the adjustment of the use height of the horizontal calibration device is realized according to different requirements of practical use.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel level calibration is used in engineering survey device which characterized in that: comprises a base (1), a supporting platform (2) is arranged at the upper end of the base (1), the upper end of the supporting platform (2) is provided with a rotating platform (3), the inner side of the base (1) is provided with a connecting clamping block (4), a first supporting rod (5) is arranged at the lower end of the connecting clamping block (4), a sliding groove (52) is arranged at the inner side of the first supporting rod (5), the lower end of the first supporting rod (5) is provided with a second supporting rod (6), an adjusting fixture block (7) is arranged at the lower end of the first supporting rod (5), a first sliding box (71) is arranged at the right end of the adjusting fixture block (7), a second sliding box (72) is arranged at the left end of the adjusting clamping block (7), a limiting sliding block (73) is arranged at the upper end of the adjusting clamping block (7), an expansion spring (74) is arranged on the inner side of the first sliding box (71).
2. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: the supporting table (2) is of a cylindrical structure, the levels (21) are arranged at the upper end of the supporting table (2), the number of the levels (21) is three, the mounting positions of the three levels (21) are all located right above the corresponding first supporting rods (5), the height of the levels (21) is one tenth of the height of the rotating platform (3), and the height of the supporting table (2) is the same as the height of the rotating platform (3).
3. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: connect fixture block (4) and set up for the rectangle structure, the upper portion of connecting fixture block (4) is arc, and the quantity of connecting fixture block (4) is three, and every inboard of connecting fixture block (4) all is provided with connecting axle (41), and inboard and both ends that connecting axle (41) run through connecting fixture block (4) all stretch into the inboard of base (1), connect fixture block (4) and can use connecting axle (41) to rotate as the center.
4. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: the first supporting rods (5) are arranged in a rectangular structure, the number of the first supporting rods (5) is three, and two first inner grooves (51) are formed in the inner side of each first supporting rod (5).
5. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: the second supporting rods (6) are arranged in a cylindrical structure, every two second supporting rods (6) form a group, a horizontal connecting rod (61) is arranged between the two second supporting rods (6) in the same group, and the diameter of the outer ring of each second supporting rod (6) is matched with the diameter of the inner ring of each first inner groove (51).
6. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: every two of the adjusting clamping blocks (7) are in a group, the front end of each adjusting clamping block (7) is provided with a pushing block (75), each pushing block (75) is in a rectangular structure, one end, which is not connected with the telescopic spring (74), of each adjusting clamping block (7) is in an arc-shaped structure, the size of each arc-shaped structure is matched with the diameter of the outer ring of the second supporting rod (6), and the left end and the right end of the telescopic spring (74) are fixedly connected with the adjusting clamping blocks (7).
7. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: first slip case (71) and second slip case (72) are the rectangle structure setting, and the both ends of first slip case (71) and second slip case (72) are the opening setting, the left end and the regulation fixture block (7) fixed connection of first slip case (71), the right-hand member and the regulation fixture block (7) fixed connection of second slip case (72), the outer lane size of second slip case (72) and the inner circle size phase-match of first slip case (71), the front end of second slip case (72) is provided with limiting plate (721).
8. The novel horizontal calibration device for engineering measurement according to claim 1, characterized in that: two limiting sliding blocks (73) are combined into one group, and the size of the limiting sliding blocks (73) is matched with that of the sliding grooves (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120823874.2U CN214747922U (en) | 2021-04-21 | 2021-04-21 | Novel engineering measurement is with horizontal calibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120823874.2U CN214747922U (en) | 2021-04-21 | 2021-04-21 | Novel engineering measurement is with horizontal calibration device |
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| CN214747922U true CN214747922U (en) | 2021-11-16 |
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| CN202120823874.2U Active CN214747922U (en) | 2021-04-21 | 2021-04-21 | Novel engineering measurement is with horizontal calibration device |
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