CN117490547B - Flatness measuring device and method for assembly type building installation - Google Patents
Flatness measuring device and method for assembly type building installation Download PDFInfo
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- CN117490547B CN117490547B CN202311814103.7A CN202311814103A CN117490547B CN 117490547 B CN117490547 B CN 117490547B CN 202311814103 A CN202311814103 A CN 202311814103A CN 117490547 B CN117490547 B CN 117490547B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 210000003813 thumb Anatomy 0.000 claims abstract description 9
- 244000208734 Pisonia aculeata Species 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
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- 230000009471 action Effects 0.000 claims description 6
- 210000004247 hand Anatomy 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
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- 229910052742 iron Inorganic materials 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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Abstract
The invention relates to the technical field of building measurement, and discloses a flatness measuring device and a flatness measuring method for assembled building installation. According to the invention, the transverse rod is driven to move backwards by pressing the pressing piece, the pushing-down block is driven to move downwards by guiding of the inclined surface to drive the lifting plate and the lifting plate to move downwards, all the measuring rods are finally pushed out to the same length, the position of the measuring rods is clamped by the clamping blocks, when the device is detected, the device is only required to be taken down after being abutted against the detected surface, flatness measurement can be carried out by observing the condition that the measuring rods are taken into the first ruler body, a feeler gauge is not required to be used during measurement, and the pressing position of the pressing piece is positioned at the thumb of a double-hand holding state, so that the operation is simple and convenient.
Description
Technical Field
The invention relates to the technical field of building measurement, in particular to a flatness measuring device and method for assembly type building installation.
Background
After the assembled building is installed, flatness measurement is required to be carried out on the wall body, the ground and the cross beam of the building so as to ensure the installation quality of the building, the flatness measurement in the prior art is mostly carried out by adopting a guiding rule, the smooth surface of the guiding rule is abutted against the measured surface during measurement, then the guiding rule is inserted into a gap between the guiding rule and the back side surface, and finally the flatness of the measured surface is expressed through reading on the guiding rule.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a flatness measuring device and a flatness measuring method for assembly type building installation, and the flatness measuring device and the flatness measuring method have the advantage that the operation of removing and plugging a feeler gauge is not required in each measurement in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the flatness measuring device for the assembled building installation comprises a first ruler body, a second ruler body and an anti-skid sleeve, wherein a lifting assembly is arranged in the middle of the first ruler body, a pressing assembly is arranged on the front side of the first ruler body, and a sliding assembly and a locking assembly are arranged at the bottom end of an inner cavity of the first ruler body;
the lifting assembly comprises a first positioning rod, the first positioning rod is fixedly arranged in the inner cavities of the first ruler body and the second ruler body, the surface of the first positioning rod is connected with a lifting plate in a sliding manner, and a reset spring and a pressing shaft are fixedly arranged at the bottom end of the lifting plate;
the pressing assembly comprises a cross rod and a pushing block, the pushing block is fixedly arranged on the top surface of the lifting plate, the cross rod is slidably connected to the side surface of the first ruler body, the front end of the cross rod is fixedly provided with a pressing piece, the middle part of the cross rod is fixedly provided with a connecting plate, and one end of the connecting plate, which is far away from the pushing block, is fixedly provided with a pull-back spring;
the sliding assembly comprises a positioning sleeve, the positioning sleeve is fixedly arranged on the bottom surfaces of the first inner cavity and the second inner cavity of the ruler body, the inner cavity of the positioning sleeve is slidably connected with a measuring rod, sliding grooves are formed in the front end and the rear end of the measuring rod, and sliding blocks are fixedly arranged on the front side and the rear side of the bottom end of the inner cavity of the positioning sleeve;
the locking assembly comprises a fixing sleeve and a clamping groove, a compression spring is fixedly arranged in an inner cavity of the fixing sleeve, a connecting block is fixedly arranged at one end, close to the measuring rod, of the compression spring, a clamping block is fixedly arranged at the other end of the connecting block, and the clamping groove is formed in the side face of the measuring rod.
Preferably, a plurality of vertically arranged mounting holes are formed in the surface of the measuring rod, and a magnet is plugged into one of the mounting holes.
Preferably, the number of the lifting plates is two, the two lifting plates are respectively positioned at the middle parts of the first ruler body and the second ruler body, and the lifting plates positioned at the inner side of the first ruler body are fixedly provided with clamping plates through bolts.
Preferably, the first ruler body and the second ruler body are hinged, and the anti-slip sleeve is fixedly arranged on the surfaces of the first ruler body and the second ruler body.
Preferably, the first ruler body and the second ruler body are fixed with a second positioning rod at one end close to each other, and the two lifting plates are respectively and slidably sleeved on the second positioning rods.
Preferably, the sliding block is slidably connected in the sliding groove, the bottom end of the sliding groove penetrates through the lower portion of the measuring rod, and a thickness exists between the top end of the sliding groove and the top end of the measuring rod.
Preferably, the clamping block is inserted into the clamping groove, and the section of the clamping block is an isosceles triangle with a top angle of one hundred twenty degrees.
Preferably, the rear end of the cross rod and the top end of the pushing block are both obliquely arranged, and the inclined planes of the rear end of the cross rod and the top end of the pushing block are parallel.
Preferably, the diameter value of the pressing shaft is equal to the inner diameter value of the positioning sleeve, and the pressing shaft is positioned above the measuring rod.
The invention also provides a measuring method for the flatness measuring device for the assembled building installation, which comprises the following steps:
when the device is required to be unfolded to be used as a two-meter ruler, the first ruler body and the second ruler body are placed side by side, and the locking device at the rear side of the first ruler body and the second ruler body is used for fixing the first ruler body and the second ruler body;
then, an operator holds the anti-skid sleeves arranged on the first ruler body and the second ruler body respectively by two hands, the thumb is enabled to face the direction of the pressing assembly, the pressing piece is pressed inwards by the thumb, the transverse rod is driven to move backwards by the pressing piece, the pull-back spring is stretched, meanwhile, due to the inclined plane between the transverse rod and the push-down block, the push-down block can be pushed downwards, the lifting plate is driven to move downwards, the reset spring is compressed, the pressing shaft arranged below the lifting plate is inserted into the positioning sleeve, the measuring rod is pushed downwards to the lower part of the first ruler body, after the lifting plate is contacted with the positioning sleeve, the lifting plate cannot move downwards, at the moment, the measuring rod is completely stretched out, then the pressing piece is loosened, the pull-back spring in a stretched state pulls the transverse rod back to reset by the connecting plate, the reset spring in a compressed state lifts the lifting plate to reset, and the clamping block of the measuring rod cannot return;
attaching the smooth surface of the device to the surface to be tested, and taking down the device after the device is tightly attached;
in the state that the error of the flatness is 0, if the side surface is completely leveled, all measuring rods are completely pushed into the first ruler body and are blocked by the clamping blocks to be unable to fall out, if the measured surface does not reach the standard, at least one measuring rod is not completely retracted into the first ruler body, and after the measuring rod is not completely retracted, the flatness is not up to the standard;
when the device is required to be contracted to be used as a meter ruler, the first ruler body and the second ruler body are folded, at the moment, the measuring rod on the first ruler body or the second ruler body can be selected as a standard point to be used, the actions are repeated, a group of measuring rods on the first ruler body or the second ruler body extend out by pressing the transverse rod to be used as measurement, and whether the level assembly degree is up to the standard is judged to be consistent with the judgment of the two meter ruler.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the transverse rod is driven to move backwards by pressing the pressing piece, the pushing-down block is driven to move downwards by guiding of the inclined surface to drive the lifting plate and the lifting plate to move downwards, all the measuring rods are finally pushed out to the same length, the position of the measuring rods is clamped by the clamping blocks, when the device is detected, the device is only required to be taken down after being abutted against the detected surface, flatness measurement can be carried out by observing the condition that the measuring rods are taken into the first ruler body, a feeler gauge is not required to be used during measurement, and the pressing position of the pressing piece is positioned at the thumb of a double-hand holding state, so that the operation is simple and convenient.
2. According to the invention, the plurality of mounting holes are formed in the measuring rod, the measuring rod is made of transparent glass, when the precision requirement of the measured surface changes, the magnet can be taken out by using an iron object, when the allowable error is large, the magnet is placed into the mounting hole close to the upper part, and when the measuring rod is detected, the standard meets the precision standard as long as the magnet is not exposed, so that different use conditions of the device can be rapidly met.
3. According to the invention, the lifting plate is driven to move downwards by using the pressing sheet, the measuring rod is pushed out of the first ruler body, the measurement can be completed only by leaning the device against the measured surface during measurement, one person can complete the operation in the whole measurement process, and two persons are not required to operate in a matching way during measurement of the two meters, so that the labor investment is reduced.
4. According to the invention, the lifting plate is driven to move downwards by using the pressing sheet, the measuring rod is pushed out of the ruler body I, the device is only required to be abutted against the measured surface to finish measurement during measurement, when the measured surface is located at the top of the wall surface where the flatness is unqualified, an operator is not required to transport a ladder to climb to a high place for measurement, and the operation risk is reduced while the operation is simple and convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a connection of a structural slip assembly according to the present invention;
FIG. 3 is a schematic cross-sectional view of a first blade and a second blade of the present invention;
FIG. 4 is an enlarged schematic view of the structure of the present invention at A in FIG. 3;
FIG. 5 is a schematic view of the connection of the lifting plate of the structure of the present invention;
FIG. 6 is a schematic diagram of the structure of the present invention at B in FIG. 5;
FIG. 7 is a schematic cross-sectional view of a structural measurement rod of the present invention;
FIG. 8 is a schematic view of the explosive connection of the structural measuring rod of the present invention.
In the figure: 1. a first ruler body; 2. a second ruler body; 3. an anti-skid sleeve; 4. a lifting assembly; 41. a positioning rod I; 42. a lifting plate; 43. a return spring; 44. pressing a shaft; 5. a pressing assembly; 51. a cross bar; 52. pressing the sheet; 53. a connecting plate; 54. a pull-back spring; 55. pushing down the block; 6. a slip assembly; 61. a positioning sleeve; 62. a measuring rod; 63. a slide block; 64. a chute; 7. a locking assembly; 71. a fixed sleeve; 72. a compression spring; 73. a connecting block; 74. a clamping block; 75. a clamping groove; 8. a mounting hole; 9. a magnet; 10. a clamping plate; 11. and a positioning rod II.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 8, the invention provides a flatness measuring device for assembly type building installation, which comprises a first ruler body 1, a second ruler body 2 and an anti-slip sleeve 3, wherein a lifting component 4 is arranged in the middle of the first ruler body 1, a pressing component 5 is arranged on the front side of the first ruler body 1, and a sliding component 6 and a locking component 7 are arranged at the bottom end of an inner cavity of the first ruler body 1;
the lifting assembly 4 comprises a first positioning rod 41, wherein the first positioning rod 41 is fixedly arranged in the inner cavities of the first ruler body 1 and the second ruler body 2, the surface of the first positioning rod 41 is connected with a lifting plate 42 in a sliding manner, and a reset spring 43 and a pressing shaft 44 are fixedly arranged at the bottom end of the lifting plate 42;
the pressing assembly 5 comprises a cross rod 51 and a push-down block 55, the push-down block 55 is fixedly arranged on the top surface of the lifting plate 42, the cross rod 51 is slidably connected to the side surface of the first ruler body 1, a pressing piece 52 is fixedly arranged at the front end of the cross rod 51, a connecting plate 53 is fixedly arranged in the middle of the cross rod 51, and a pull-back spring 54 is fixedly arranged at one end, far away from the push-down block 55, of the connecting plate 53;
the sliding assembly 6 comprises a positioning sleeve 61, the positioning sleeve 61 is fixedly arranged on the bottom surfaces of the inner cavities of the first ruler body 1 and the second ruler body 2, the inner cavity of the positioning sleeve 61 is slidably connected with a measuring rod 62, sliding grooves 64 are formed in the front end and the rear end of the measuring rod 62, and sliding blocks 63 are fixedly arranged on the front side and the rear side of the bottom end of the inner cavity of the positioning sleeve 61;
the locking assembly 7 comprises a fixed sleeve 71 and a clamping groove 75, wherein a compression spring 72 is fixedly arranged in an inner cavity of the fixed sleeve 71, a connecting block 73 is fixedly arranged at one end, close to the measuring rod 62, of the compression spring 72, a clamping block 74 is fixedly arranged at the other end of the connecting block 73, and the clamping groove 75 is formed in the side face of the measuring rod 62;
the transverse rod 51 is driven to move backwards through pressing the pressing piece 52, the push-down block 55 is moved downwards through the guiding of the inclined plane to drive the lifting plate 42 and the lifting plate 42 to move downwards, all the measuring rods 62 are finally pushed out to the same length downwards, the clamping blocks 74 are used for clamping the positions of the measuring rods 62, when the measuring rods are detected, the flatness measurement can be carried out by only needing to tightly lean against the measured surface and taking down the measuring rods 62 into the first ruler body 1, when the measuring rods are measured, a feeler gauge is not needed, the pressing position of the pressing piece 52 is located at the thumb of the holding state of two hands, the operation is simple and convenient, the operation can be completed by only needing to tightly lean against the measured surface when the measuring rods are measured, the operation can be completed by one person in the whole measuring process, when the measuring rods are measured by two meters, the operation is not needed by two collocations, the manual investment is reduced, the measuring rods 62 are pushed out by the first ruler body 1, the measuring devices are only needed to be tightly lean against the measured surface, when the flatness of the measured surface is not found, the step is not needed, and the risk of the operator is reduced when the measuring rods are not needed, and the operation is carried out to the operation is easy.
As shown in fig. 7 and 8, a plurality of vertically arranged mounting holes 8 are formed in the surface of the measuring rod 62, and a magnet 9 is inserted into one of the plurality of mounting holes 8;
can place in the magnet 9 outside through using iron article, if use the screwdriver of ordinary, the magnetism of magnet 9 can make magnet 9 adsorb on the screwdriver, and then take out magnet 9, and place magnet 9 in different mounting holes 8 use, when the required precision requirement of measured surface diminishes (when the tolerance is great promptly), put into magnet 9 in the mounting hole 8 near the top, when detecting, as long as magnet 9 is unexposed can the standard accord with precision standard, when the exact precision requirement is right (when the tolerance is less promptly), put into the mounting hole 8 of below with magnet 9 can, through setting up a plurality of mounting holes 8 on measuring rod 62, measuring rod 62 is transparent glass material and is convenient for observe whether the position of magnet 9 stretches out a chi body 1, can realize the different service conditions of quick satisfaction device.
As shown in fig. 3 and 5, there are two lifting plates 42, and the two lifting plates 42 are respectively located in the middle of the first blade 1 and the second blade 2, and the lifting plate 42 located on the inner side of the first blade 1 is fixedly provided with the clamping plate 10 through bolts;
by providing the clamping plate 10, the two lifting plates 42 can be positioned in the vertical direction in the two meter ruler state, so that the two lifting plates 42 can synchronously move downwards and ascend.
As shown in fig. 1 and 2, the first blade 1 and the second blade 2 are hinged, and the anti-slip sleeve 3 is fixedly arranged on the surfaces of the first blade 1 and the second blade 2;
the anti-skid sleeve 3 is integrally L-shaped, so that one side towards which the thumb faces can be rapidly distinguished, and the first ruler body 1 and the second ruler body 2 are hinged, so that the device has two states of a two-meter ruler and a one-meter ruler.
As shown in fig. 3 and 5, two positioning rods 11 are fixed at the ends of the first and second ruler bodies 1 and 2, which are close to each other, and two lifting plates 42 are respectively and slidably sleeved on the two positioning rods 11;
by arranging the second positioning rod 11, the vertical movement of the lifting plate 42 is positioned and guided, and the first positioning rod 41 can balance the movement of the lifting plate 42, so that the situation that the lifting plate 42 moves up and down can not deviate is ensured.
As shown in fig. 7 and 8, the sliding block 63 is slidably connected in the sliding groove 64, the bottom end of the sliding groove 64 penetrates through the lower part of the measuring rod 62, and a thickness exists between the top end of the sliding groove 64 and the top end of the measuring rod 62;
the measuring rod 62 is ensured to extend downwards smoothly, the condition that the measuring rod 62 falls down due to the fact that the measuring rod 62 extends out too long is avoided, the sliding block 63 slides in the sliding groove 64, the condition that rotation occurs when the measuring rod 62 moves up and down can be avoided, and the condition that the clamping groove 75 and the clamping block 74 are staggered is avoided.
As shown in fig. 8, the clamping block 74 is inserted into the clamping groove 75, and the cross section of the clamping block 74 is an isosceles triangle with a top angle of one hundred twenty degrees;
by the isosceles triangle arrangement of the clamping block 74, the clamping block 74 can be ensured to slide out smoothly from the clamping groove 75 in the process of moving up and down the measuring rod 62.
As shown in fig. 4, the rear end of the cross bar 51 and the top end of the push-down block 55 are both inclined, and the inclined planes of the two are parallel;
when the cross bar 51 moves backward, the inclined plane provided at the rear end of the cross bar 51 moves backward as a whole, and the inclined plane at the top end of the push-down block 55 is pushed by the inclined plane of the cross bar 51 to move downward, thereby pushing the lifting plate 42 to move downward.
As shown in fig. 7, the diameter of the pressing shaft 44 is equal to the inner diameter of the positioning sleeve 61, and the pressing shaft 44 is located above the measuring rod 62;
the pressing shaft 44 can be ensured to smoothly push down the measuring rod 62, and can smoothly enter the positioning sleeve 61 without shaking.
The invention also provides a measuring method for the assembly type building installation flatness measuring device, which comprises the following steps:
when the device is required to be unfolded to be used as a two-meter ruler, the first ruler body 1 and the second ruler body 2 are placed side by side, and the locking device at the rear side of the first ruler body 1 and the second ruler body 2 is used for fixing the first ruler body 1 and the second ruler body 2;
then, the operator holds the anti-slip sleeves 3 arranged on the first ruler body 1 and the second ruler body 2 respectively by hands, the thumb is used for inwards pressing the pressing piece 52 towards the direction of the pressing component 5, the transverse rod 51 is driven to move backwards by the pressing piece 52, the pull-back spring 54 is stretched, meanwhile, due to the inclined plane between the transverse rod 51 and the push-down block 55, the push-down block 55 can be pushed downwards, the lifting plate 42 is driven to move downwards, the reset spring 43 is compressed, the pressing shaft 44 arranged below the lifting plate 42 is inserted into the positioning sleeve 61, the measuring rod 62 is pushed downwards to the lower part of the first ruler body 1, when the lifting plate 42 is contacted with the positioning sleeve 61, the lifting plate 42 cannot move downwards, the measuring rod 62 is fully extended at the moment, then the pressing piece 52 is released, the pull-back spring 54 in a stretched state pulls the transverse rod 51 back to reset by the connecting plate 53, the reset spring 43 in a compressed state lifts the lifting plate 42, and the measuring rod 62 cannot be clamped by the clamping block 74;
attaching the smooth surfaces of the device (namely the surfaces of the first ruler body 1 and the second ruler body 2 with the measuring rod 62) to the measured surface, and taking down the device after the device is tightly attached by force;
in the state that the error of the flatness is 0, if the measured surface is not up to standard, at least one measuring rod 62 is not fully retracted into the first ruler body 1, and after the measuring rod 62 is not fully retracted, the flatness is not up to standard;
when the device is required to be contracted to be used as a meter ruler, the first ruler body 1 and the second ruler body 2 are folded, at the moment, the measuring rods 62 on the first ruler body 1 or the second ruler body 2 can be selected as standard points to be used, the above actions are repeated, a group of measuring rods 62 on the first ruler body 1 or the second ruler body 2 are extended out by pressing the transverse rod 51 to be used as measurement, and whether the level is up to standard is judged, so that the judgment of the two meter ruler is consistent;
can use iron article, if use the screwdriver of ordinary to place in the magnet 9 outside, the magnetism of magnet 9 can make magnet 9 adsorb on the screwdriver, and then take out magnet 9, and place magnet 9 in different mounting holes 8 use, when the requirement precision requirement of measured surface diminishes (when the tolerance is great promptly), put into the mounting hole 8 near the top with magnet 9, when detecting, as long as magnet 9 does not expose can the standard accord with precision standard, when the anti-rightness precision requirement is strict (when the tolerance is less promptly), put into the mounting hole 8 of below with magnet 9 can.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a be used for assembled building installation roughness measuring device, includes blade one (1), blade two (2) and anti-skidding cover (3), its characterized in that: the middle part of the first ruler body (1) is provided with a lifting component (4), the front side of the first ruler body (1) is provided with a pressing component (5), and the bottom end of the inner cavity of the first ruler body (1) is provided with a sliding component (6) and a locking component (7); the lifting assembly (4) comprises a first positioning rod (41), the first positioning rod (41) is fixedly arranged in the inner cavities of the first ruler body (1) and the second ruler body (2), the surface of the first positioning rod (41) is connected with a lifting plate (42) in a sliding manner, and a reset spring (43) and a pressing shaft (44) are fixedly arranged at the bottom end of the lifting plate (42); the pressing assembly (5) comprises a cross rod (51) and a pushing block (55), the pushing block (55) is fixedly arranged on the top surface of the lifting plate (42), the cross rod (51) is slidably connected to the side surface of the first ruler body (1), the pressing plate (52) is fixedly arranged at the front end of the cross rod (51), a connecting plate (53) is fixedly arranged in the middle of the cross rod (51), and a pull-back spring (54) is fixedly arranged at one end, far away from the pushing block (55), of the connecting plate (53); the sliding assembly (6) comprises a positioning sleeve (61), the positioning sleeve (61) is fixedly arranged on the bottom surfaces of the inner cavities of the first ruler body (1) and the second ruler body (2), the inner cavity of the positioning sleeve (61) is slidably connected with a measuring rod (62), sliding grooves (64) are formed in the front end and the rear end of the measuring rod (62), and sliding blocks (63) are fixedly arranged on the front side and the rear side of the bottom end of the inner cavity of the positioning sleeve (61); the locking assembly (7) comprises a fixed sleeve (71) and a clamping groove (75), a compression spring (72) is fixedly arranged in an inner cavity of the fixed sleeve (71), a connecting block (73) is fixedly arranged at one end, close to the measuring rod (62), of the compression spring (72), a clamping block (74) is fixedly arranged at the other end of the connecting block (73), and the clamping groove (75) is formed in the side face of the measuring rod (62).
2. The flatness measurement device for use in fabricated building installations of claim 1, wherein: a plurality of vertically arranged mounting holes (8) are formed in the surface of the measuring rod (62), and a magnet (9) is plugged into one of the mounting holes (8).
3. The flatness measurement device for use in fabricated building installations of claim 2, wherein: the two lifting plates (42) are arranged in the middle of the first ruler body (1) and the second ruler body (2) respectively, and the clamping plates (10) are fixedly arranged on the lifting plates (42) on the inner side of the first ruler body (1) through bolts.
4. A flatness measurement device for use in fabricated building installations according to claim 3, characterized in that: the anti-slip sleeve (3) is fixedly arranged on the surfaces of the first ruler body (1) and the second ruler body (2).
5. The flatness measurement device for fabricated building installation of claim 4, wherein: one end of the first ruler body (1) and one end of the second ruler body (2) which are close to each other are respectively fixed with a second positioning rod (11), and the two lifting plates (42) are respectively sleeved on the two second positioning rods (11) in a sliding mode.
6. The flatness measurement device for fabricated building installation of claim 5, wherein: the sliding block (63) is slidably connected in the sliding groove (64), the bottom end of the sliding groove (64) penetrates through the lower portion of the measuring rod (62), and a thickness exists between the top end of the sliding groove (64) and the top end of the measuring rod (62).
7. The flatness measurement device for fabricated building installation of claim 6, wherein: the clamping block (74) is inserted into the clamping groove (75), and the section of the clamping block (74) is an isosceles triangle with a top angle of one hundred twenty degrees.
8. The flatness measurement device for use in fabricated building installations of claim 7, wherein: the rear end of the cross rod (51) and the top end of the push-down block (55) are obliquely arranged, and the inclined planes of the rear end and the top end are parallel.
9. The flatness measurement device for use in fabricated building installations of claim 8, wherein: the diameter value of the pressing shaft (44) is equal to the inner diameter value of the positioning sleeve (61), and the pressing shaft (44) is positioned above the measuring rod (62).
10. A measurement method for a fabricated building installation flatness measurement device according to claim 9, characterized in that: the method comprises the following steps:
when the device is required to be unfolded to be used as a two-meter ruler, the first ruler body (1) and the second ruler body (2) are placed side by side, and the locking device at the rear side of the first ruler body (1) and the second ruler body (2) is used for fixing the first ruler body (1) and the second ruler body (2);
then, an operator holds the anti-slip sleeve (3) arranged on the first ruler body (1) and the second ruler body (2) by hands respectively, and enables the thumb to face the direction of the pressing component (5), the pressing piece (52) is inwards pressed by the thumb, the transverse rod (51) is driven to move backwards by the pressing piece (52), the pull-back spring (54) is stretched, meanwhile, due to the inclined plane between the transverse rod (51) and the push-down block (55), the push-down block (55) can be pushed downwards, the lifting plate (42) is driven to move downwards, the reset spring (43) is compressed, the pressing shaft (44) arranged below the lifting plate (42) is inserted into the positioning sleeve (61), the measuring rod (62) is pushed downwards out of the position below the first ruler body (1), after the lifting plate (42) is contacted with the positioning sleeve (61), the measuring rod (62) cannot move downwards, the push-down spring (52) is released, the pull-down spring (54) in a stretched state can push down push the push-down block (55) through the connecting plate (53), and the reset spring (74) cannot be clamped by the lifting plate (42) in a compressed state;
attaching the smooth surface of the device to the surface to be tested, and taking down the device after the device is tightly attached;
in the state that the error of the flatness is 0, if the flatness is completely leveled by the side surface, all the measuring rods (62) are completely pushed into the first ruler body (1) and are blocked by the clamping blocks (74) so as not to fall out, if the measured surface does not reach the standard, at least one measuring rod (62) is not completely retracted into the first ruler body (1), and after the measuring rod (62) is not completely retracted, the flatness is not reached;
when the device is required to be contracted to be used as a meter ruler, the first ruler body (1) and the second ruler body (2) are folded, at the moment, the measuring rods (62) on the first ruler body (1) or the second ruler body (2) can be selected to be used as standard points, the above actions are repeated, a group of measuring rods (62) on the first ruler body (1) or the second ruler body (2) are extended through pressing the transverse rod (51), and then are used for measurement, and whether the level is judged to reach the standard is consistent with the judgment of the two meter ruler.
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