CN112780887B - Be applied to auxiliary device of building engineering cost budget - Google Patents

Be applied to auxiliary device of building engineering cost budget Download PDF

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Publication number
CN112780887B
CN112780887B CN202011545906.3A CN202011545906A CN112780887B CN 112780887 B CN112780887 B CN 112780887B CN 202011545906 A CN202011545906 A CN 202011545906A CN 112780887 B CN112780887 B CN 112780887B
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China
Prior art keywords
surveying instrument
box body
air bag
plate
bottle
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CN202011545906.3A
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CN112780887A (en
Inventor
何畏
周畅
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Guangzhou Yuefeng Engineering Cost Consulting Co.,Ltd.
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Chongqing Vocational Institute of Engineering
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/0232Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/027Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00Purpose; Design features
    • F16F2230/06Fluid filling or discharging

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Buffer Packaging (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

This scheme belongs to building engineering technical field, discloses an auxiliary device who is applied to building engineering cost budget. Comprises a surveying instrument and a bracket; the device is characterized by further comprising a box body, wherein a falling-preventing mechanism is arranged in the box body, the falling-preventing mechanism comprises an inflation bottle and a first air bag, compressed gas is arranged in the inflation bottle, a valve is arranged on the inflation bottle, the upper end of the box body comprises a first plate connected with the surveying instrument and a second plate located around the first plate, a gap is formed between the first plate and the second plate, and the first air bag is arranged in the gap; the opening of the first air bag is hermetically connected with the bottle mouth of the inflation bottle; the inflated state of the first balloon is exposed from the gap to a length longer than the mapper. This scheme can be aerifyd the gasbag rapidly at the surveying instrument fall down process through introducing box, gas cylinder and gasbag, for the surveying instrument forms the protection, prevents that the surveying instrument from causing the measured data inaccurate and causing the unnecessary loss because the delay time limit for a project the latter because break.

Description

Be applied to auxiliary device of building engineering cost budget
Technical Field
This scheme belongs to building engineering technical field, concretely relates to be applied to auxiliary device of building engineering cost budget.
Background
The construction cost is the total cost for some construction, and the core content is investment estimation, design approximate calculation, correction approximate calculation, construction drawing budget, construction settlement, completion settlement and the like. In the building engineering, need the professional to carry out the plotting work in advance usually, at the plotting work time, need use the plotting tool, generally the title is the surveying instrument, and the surveying instrument belongs to a high-accuracy instrument, and its measured data plays crucial effect to the engineering cost budget.
However, on the site, because the staff is more, the staff is walked to go away in the working process and is probably collided with the mapping device, perhaps the staff kicks the support of mapping device by accident for the mapping device falls to the ground, causes the damage, leads to the unable continuation of mapping work so that delay the time limit for a project, causes unnecessary loss, consequently continues the auxiliary device of an engineering cost budget, can make the surveying instrument fall to the ground when, can protect not by the break.
Application number is CN 202010605285.7's patent discloses civil engineering cost mapping tool storage device, including the mapper main part, the outside of mapper main part is equipped with receiving mechanism, receiving mechanism is including first receiver, the second receiver, a fixed base, first connecting axle, the second connecting axle, first card strip, second card strip and connection fixture block, be equipped with between first receiver and the second receiver and prevent falling the mechanism, prevent falling the mechanism including the cushion chamber, prevent falling gluey seat and spring, be equipped with sunshade mechanism between the top of second receiver and fixing base, sunshade mechanism is including the sunshading board, fixed fixture block, the axle bed, connecting bolt, supporting seat and T shape fixture block.
The mechanism of falling of preventing in the containing box in this scheme can make the surveying instrument not broken in the containing box, but can not make the surveying instrument not broken at the survey and drawing in-process.
Disclosure of Invention
This scheme provides an auxiliary device who is applied to building engineering cost budget to solve the surveying instrument and fall the easy impaired problem of in measurement process.
In order to achieve the above purpose, the present scheme provides an auxiliary device applied to construction cost budget of building engineering, which comprises a surveying instrument and a bracket; the lower end of the box body is connected with the bracket; the anti-falling device is arranged in the box body and comprises an inflation bottle and a first air bag, compressed gas is arranged in the inflation bottle, a valve is arranged on the inflation bottle, a baffle matched with the valve is arranged in the inflation bottle in a sliding mode, a bottle plug is arranged at the upper end of the baffle, a vertical rod with the diameter smaller than that of the bottle plug is arranged at the lower end of the baffle, a baffle groove matched with the bottle plug is arranged on the inflation bottle, a spring is arranged at the bottom of the box body, a pressing block for compressing the spring is connected to the spring, and the pressing block is connected with the vertical rod; the upper end of the box body comprises a first plate connected with the surveying instrument and a second plate located on the periphery of the first plate, a gap is formed between the first plate and the second plate, and the first air bag is arranged in the gap; the opening of the first air bag is hermetically connected with the bottle mouth of the inflation bottle.
The principle of the scheme is as follows: surveying instrument is at the measurement process, suddenly carelessly by the collision, at the in-process of falling down, briquetting in the box is because the direction of gravity changes no longer compression spring, make the spring resume deformation with baffle towards baffle groove direction top, and make the bottle plug of baffle get into the baffle inslot, the montant is arranged in the gas cylinder, the valve of gas cylinder is opened this moment, because the diameter ratio bottle plug of montant is little, consequently, compressed gas in the gas cylinder rushes out and inflates for first gasbag, make first gasbag expand rapidly and expand and surround the surveying instrument in the space that first gasbag is constituteed, so contact first gasbag when the surveying instrument falls down, thereby first gasbag plays cushioning effect and can prevent that direct impact ground and receive the injury when the surveying instrument falls down.
The beneficial effect of this scheme: this scheme can be aerifyd the gasbag rapidly at the surveying instrument fall down process through introducing box, gas cylinder and gasbag, for the surveying instrument forms the protection, prevents that the surveying instrument from causing the measured data inaccurate and causing the unnecessary loss because the delay time limit for a project the latter because break.
Further, the length of the first balloon inflated to emerge from the gap is longer than the mapper. When the surveying instrument falls down, the surveying instrument always contacts the first air bag instead of the ground, so that the first air bag can better protect the surveying instrument and prevent the surveying instrument from being damaged.
Furthermore, the anti-falling mechanism also comprises second air bags respectively arranged in gaps in four directions, and the second air bags are connected with the corresponding first air bags through films; first gasbag and second gasbag constitute confined space with the box bottom plate in the space respectively, be equipped with the bracing piece on the box bottom plate in the first gasbag, the bracing piece lower extreme is connected with the box bottom plate, the articulated rotary rod that is used for puncturing the film that has in bracing piece upper end. When the surveying instrument fell down towards a certain direction, the back was aerifyd rapidly to first gasbag, and the rotary rod is rotatory and punctures the film of this direction because of self gravity relative support rod for the second gasbag intercommunication of first gasbag and this direction aerifys for the gas cylinder simultaneously for the second gasbag of first gasbag and this direction aerifys, makes the surveying instrument receive double-deck protection in the direction of falling down, and it is better to prevent falling the effect. And the second air bags in other directions cannot be inflated because the rotating rod cannot cut the film, so that resources are saved.
Furthermore, a clamping block used for clamping the pressing block is detachably arranged in the box body. Can block the briquetting in arranging the fixture block in the box before surveying instrument work, prevent that the box from turning on one's side and then leading to inflating the cylinder valve and open because of the mistake hits, surveying instrument during operation then takes out it for the briquetting can be opened by the spring when surveying instrument falls down.
Furthermore, the anti-falling mechanism is movably arranged in the box body, and one side of the box body is provided with a hinge door which can be locked. When the gas in the inflation bottle is used up, the hinge door can be opened to replace the inflation bottle and the air bag, so that the inflation bottle and the air bag can be conveniently used next time.
Further, first gasbag and second gasbag inlayer scribble sealing rubber, sealing rubber can prevent that first gasbag and second gasbag from producing gas leakage in the inflation process, leads to preventing that it is not good to fall the effect.
Further, first gasbag and second gasbag are made for the nylon material, and the nylon material has very high tensile strength, and the surveying instrument can not hit the gasbag and crash the gasbag and lead to the surveying instrument to fall and be broken on the ground when falling down.
Further, the surveying instrument is installed on the first plate of box with the detachable mode, and when the survey and drawing was finished, convenient dismantlement was accomodate.
Further, the support is collapsible, and the support is installed on the box with the detachable mode, when the survey and drawing finishes, pulls down the support, then folds for occupation space is little in the transportation, and it is more convenient to accomodate.
Drawings
Fig. 1 is a schematic structural diagram of the surveying instrument of the embodiment of the present invention without falling.
Fig. 2 is a schematic view of a falling structure of the surveying instrument according to the embodiment of the present invention.
Fig. 3 is a front view of a case structure according to an embodiment of the present invention.
Fig. 4 is a top view of the box structure according to the embodiment of the present invention.
FIG. 5 is a schematic view of a baffle and baffle slot configuration of an embodiment of the present invention.
FIG. 6 is a schematic representation of an uninflated configuration of a second bladder in accordance with an embodiment of the present invention.
FIG. 7 is a schematic view of a second airbag inflation configuration according to an embodiment of the present invention.
Detailed Description
The following is further detailed by the specific embodiments:
reference numerals in the drawings of the specification include: surveying instrument 1, support 2, box 3, gas-filled bottle 4, fixture block 5, bottle plug 6, montant 7, baffle groove 8, spring 9, briquetting 10, first plate 11, second plate 12, first gasbag 13, second gasbag 14, film 15, box bottom plate 16, bracing piece 17, rotary rod 18, hinge door 19.
The embodiment is basically as shown in the attached figures 1-2:
an auxiliary device applied to construction cost budget of building engineering comprises a surveying instrument 1 and a bracket 2; still include box 3, 3 upper ends of box include first plate 11 and be located first plate 11 second plate 12 all around, and surveying instrument 1 is connected on first plate 11 with the detachable mode, can directly pull down when finishing using and accomodate, and is very convenient and safety.
3 lower extremes of box and support 2 are connected, and support 2 is collapsible, and support 2 installs on box 3 with the detachable mode, when the survey and drawing finishes, pulls down support 2, then folds for occupation space is little in the transportation, and it is more convenient to accomodate. When needing the survey and drawing, can directly open support 2 and install on box 3, then install surveying instrument 1 on box 3, can directly survey and draw.
As shown in figures 3-4:
be equipped with in the box 3 and prevent falling the mechanism, prevent falling the mechanism and include gas cylinder 4 and first gasbag 13, be equipped with compressed gas in the gas cylinder 4, be equipped with the valve on the gas cylinder 4, when the valve was closed, compressed gas can not be followed gas cylinder 4's bottleneck and rushed out, compressed gas can follow gas cylinder 4's bottleneck when the valve was opened and rushed out.
FIG. 5 shows:
a baffle matched with the valve is arranged in the inflation bottle 4 in a sliding mode, the upper end of the baffle is provided with a bottle plug 6, the lower end of the baffle is provided with a vertical rod 7 with the diameter smaller than that of the bottle plug 6, and a baffle groove 8 matched with the bottle plug 6 is formed in the inflation bottle 4. When the bottle stopper 6 is positioned at the bottle opening, the valve is closed; when the stopper 6 is moved into the baffle groove 8, the stem 7 is located in the middle of the bottle mouth, because the stem 7 is smaller in diameter than the stopper 6, and the valve is opened at this time.
A spring 9 is arranged at the bottom of the box body 3, a pressing block 10 for compressing the spring 9 is connected to the spring 9, and the pressing block 10 is connected with the vertical rod 7; when the pressing block 10 compresses the spring 9, the bottle stopper 6 is positioned in the bottle mouth, the valve is closed, when the pressing block 10 does not compress the spring 9, the spring 9 restores to deform to push the baffle plate towards the baffle plate groove 8, the bottle stopper 6 of the baffle plate enters the baffle plate groove 8, and the valve is opened at the moment.
The detachable fixture block 5 that is used for blocking the briquetting 10 that is equipped with in the box 3 can block briquetting 10 in placing the fixture block 5 in box 3 before surveying instrument 1 work, prevents that box 3 from turning on one's side and then leading to gas-filled bottle 4 valve to be opened because of the mistake hits. During operation of the surveying instrument 1, the clamping block 5 is taken out, so that the pressing block 10 can be bounced off by the spring 9 when the surveying instrument 1 falls down.
A gap is arranged between the first plate 11 and the second plate 12, and the first air bag 13 is arranged in the gap; the opening of the first air bag 13 is hermetically connected with the bottle mouth of the inflation bottle 4, and the height of the inflated state of the first air bag 13 exposed from the gap is larger than that of the surveying instrument 1. When the valve is opened, compressed gas in the inflation bottle 4 rushes out and inflates the first air bag 13, so that the first air bag 13 expands rapidly to surround the surveying instrument 1 in the space formed by the first air bag 13, the surveying instrument 1 contacts the first air bag 13 when falling down, and the first air bag 13 plays a role in buffering, so that the surveying instrument 1 can be prevented from directly colliding with the ground and being injured when falling down.
Shown in FIGS. 6-7:
the anti-falling mechanism further comprises second air bags 14 which are respectively arranged in gaps in four directions, and the second air bags 14 are connected with the corresponding first air bags 13 through films 15; the first air bag 13 and the second air bag 14 respectively form a sealed space with a box body bottom plate 16 in the gap, a support rod 17 is arranged on the box body bottom plate 16 in the first air bag 13, the lower end of the support rod 17 is connected with the box body bottom plate 16, and the upper end of the support rod 17 is hinged with a rotating rod 18 for puncturing the film 15. When surveying appearance 1 fell down towards a certain direction, first gasbag 13 aerifys the back rapidly, and the rotary rod 18 is rotatory and punctures the film 15 of this direction because of self gravity relative bracing piece 17 for first gasbag 13 and the second gasbag 14 intercommunication of this direction, gas cylinder 4 aerifys for the second gasbag 14 of first gasbag 13 and this direction simultaneously, makes surveying appearance 1 receive double-deck protection in the direction of falling down, and it is better to prevent falling the effect. And the second air bag 14 in the other direction can not be inflated because the rotating rod 18 can not puncture the film 15, thereby saving resources.
The falling-preventing mechanism is movably arranged in the box body 3, and one side of the box body 3 is provided with a hinge door which can be locked. When the gas in the gas-filled bottle 4 is used up, the opening and closing leaf door 19 can be opened to replace the gas-filled bottle 4 and the gas bag, so that the next use is convenient.
The inner layers of the first air bag 13 and the second air bag 14 are coated with sealing rubber, and the sealing rubber can prevent the first air bag 13 and the second air bag 14 from generating gas leakage in the inflating process, so that the anti-falling effect is poor. And first gasbag 13 and second gasbag 14 are made for the nylon material, and the nylon material has very high tensile strength, and surveying instrument 1 bumps the gasbag and can not hit the gasbag and break and lead to surveying instrument 1 to fall and be broken on the ground when falling.
The method comprises the following specific operations:
first install surveying instrument 1 on the first plate 11 of box 3, then install support 2 in the below of box 3, the staff uses surveying instrument 1 can begin the survey and drawing. When the staff accidentally touches the surveying instrument 1 during the work process, the surveying instrument 1 is fallen down. In the process of falling down, briquetting 10 in the box 3 no longer compresses spring 9 because the direction of gravity changes, make spring 9 resume deformation push up the baffle towards 8 directions of baffle groove, and make the bottle plug 6 of baffle get into in the baffle groove 8, montant 7 is located gas cylinder 4, the valve of gas cylinder 4 is opened this moment, because the diameter ratio bottle plug 6 of montant 7 is little, consequently, the compressed gas in the gas cylinder 4 rushes out and inflates for first gasbag 13, make first gasbag 13 expand rapidly and expand and launch and surround surveying instrument 1 in the space that first gasbag 13 constitutes, contact first gasbag 13 when surveying instrument 1 falls down, thereby first gasbag 13 plays cushioning effect and can prevent that direct collision ground and receive the injury when surveying instrument 1 falls down.
Simultaneously, because surveying instrument 1 falls down towards a certain direction, after first gasbag 13 inflates rapidly, rotary rod 18 is rotatory and punctures the film 15 of this direction because of self gravity relative bracing piece 17 for first gasbag 13 and the second gasbag 14 intercommunication of this direction, gas cylinder 4 inflates for first gasbag 13 and the second gasbag 14 of this direction simultaneously, makes surveying instrument 1 receive double-deck protection in the direction of falling down, and it is better to prevent falling down the effect. And the second air bag 14 in the other direction can not be inflated because the rotating rod 18 can not puncture the film 15, thereby saving resources.
After the gas in the air bottle 4 is used up, the hinge door 19 can be opened to separate the air bottle 4 from the opening of the first air bag 13, then the first air bag 13 and the second air bag 14 are taken out and replaced by new air bags, meanwhile, the new air bottle 4 is replaced, then the bottle opening of the new air bottle 4 is hermetically connected with the opening of the first air bag 13, the hinge door 19 is closed and locked, and the hinge door 19 is not easy to open.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (9)

1. An auxiliary device applied to construction cost budget of building engineering comprises a surveying instrument (1) and a bracket (2); the method is characterized in that: the device also comprises a box body (3), wherein the lower end of the box body (3) is connected with the bracket (2); the anti-falling device is characterized in that an anti-falling mechanism is arranged in the box body (3), the anti-falling mechanism comprises an inflation bottle (4) and a first air bag (13), compressed gas is arranged in the inflation bottle (4), a valve is arranged on the inflation bottle (4), a baffle matched with the valve is arranged in the inflation bottle (4) in a sliding mode, the upper end of the baffle is provided with a bottle stopper (6), the lower end of the baffle is a vertical rod (7) with the diameter smaller than that of the bottle stopper (6), a baffle groove (8) matched with the bottle stopper (6) is formed in the inflation bottle (4), a spring (9) is arranged at the bottom of the box body (3), a pressing block (10) used for compressing the spring (9) is connected onto the spring (9), and the pressing block (10) is connected with the vertical rod (7); the upper end of the box body (3) comprises a first plate (11) connected with the surveying instrument (1) and a second plate (12) located on the periphery of the first plate (11), a gap is formed between the first plate (11) and the second plate (12), and the first air bag (13) is arranged in the gap; the opening of the first air bag (13) is hermetically connected with the bottleneck of the inflation bottle (4).
2. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the length of the first air bag (13) exposed from the gap in the inflated state is longer than that of the surveying instrument (1).
3. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the anti-falling mechanism further comprises second air bags (14) respectively arranged in gaps in four directions, and the second air bags (14) are connected with the corresponding first air bags (13) through films (15); first gasbag (13) and second gasbag (14) constitute confined space with box bottom plate (16) in the space respectively, be equipped with bracing piece (17) on box bottom plate (16) in first gasbag (13), bracing piece (17) lower extreme is connected with box bottom plate (16), bracing piece (17) upper end articulates there is rotary rod (18) that is used for puncturing film (15).
4. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the box body (3) is internally detachably provided with a clamping block (5) for clamping the pressing block (10).
5. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the anti-falling mechanism is movably arranged in the box body (3), and one side of the box body (3) is provided with a hinge door (19) which can be locked.
6. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the inner layers of the first air bag (13) and the second air bag (14) are coated with sealing rubber.
7. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the first air bag (13) and the second air bag (14) are made of nylon materials.
8. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the surveying instrument (1) is detachably mounted on a first plate (11) of the box body (3).
9. An auxiliary device applied to construction cost budgeting according to claim 1, wherein: the support (2) is foldable, and the support (2) is detachably mounted on the box body (3).
CN202011545906.3A 2020-12-24 2020-12-24 Be applied to auxiliary device of building engineering cost budget Active CN112780887B (en)

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