CN117167613B - Anti type spirit level that falls - Google Patents
Anti type spirit level that falls Download PDFInfo
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- CN117167613B CN117167613B CN202311457836.XA CN202311457836A CN117167613B CN 117167613 B CN117167613 B CN 117167613B CN 202311457836 A CN202311457836 A CN 202311457836A CN 117167613 B CN117167613 B CN 117167613B
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- 241000486679 Antitype Species 0.000 title description 2
- 238000013016 damping Methods 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 210000000078 claw Anatomy 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000007667 floating Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 239000008358 core component Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 37
- 230000000694 effects Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The invention relates to the technical field related to level meters and discloses an anti-falling level meter which comprises a chassis, a bracket, a top plate, a pendulum body, a positioning ring, a positioning plate and a vibration locker, wherein the positioning plate is arranged on the upper side of the chassis, the upper surface of the positioning ring is connected with the bracket, the positioning ring is arranged on the upper surface of the positioning plate, and the vibration locker is used for connecting the positioning ring with the positioning plate; the damping cylinder is arranged at the lower end of the positioning convex body, the damping holes are formed in the side wall of the damping cylinder, the bottom surface of the positioning groove is sunken to form an annular damping groove, the positioning ring is connected with the positioning disc through an elastic sealing film, when the level is impacted externally, the positioning ring is switched to an air floating mode, the positioning ring is elastically connected with the positioning disc through the elastic sealing film, so that the impact of the inner core component of the level is reduced, the damping cylinder moves in the damping groove in the vibration process, and gas is exchanged reciprocally in the damping holes and damped, so that the vibration of the core component of the level is reduced, and the drop resistance of the level is further improved.
Description
Technical Field
The invention relates to the technical field of level meters, in particular to an anti-falling level meter.
Background
The level gauge is commonly used for checking whether the levelness of a working surface accords with the standard, measuring equipment is arranged in the horizontal direction and the vertical direction, a pendulum body is arranged on the existing laser level gauge, a horizontal laser emitting unit and a vertical laser emitting unit are arranged on the pendulum body, the pendulum body naturally falls down until balance under the action of gravity, and can emit horizontal and vertical laser lines which are used as the horizontal and vertical standards of construction.
The existing level generally has no anti-seismic and anti-falling performance, if the pendulum falls accidentally, the swinging part process of the pendulum body can be influenced, so that the natural swinging falling process of the pendulum body is influenced, and the levelness or verticality precision of laser is deteriorated.
For example, chinese patent No. CN115164047a discloses an anti-drop reaction bracket mechanism for civil engineering detection, wherein when the anti-drop reaction bracket mechanism is impacted by the outside, the reaction bracket drives the level body to lower the center of gravity, and the level body is erected and stored. The technical defect exists in the scheme, once the level falls, external impact can be directly transmitted to the level body due to the rigid connection of the bracket mechanism and the level, and the internal core components of the level are directly influenced, and the level comprises a laser emitting unit, a pendulum body and the like, so that the shock absorption effect is poor.
Disclosure of Invention
The invention aims to provide an anti-falling type level gauge which is used for overcoming the defect that a core component of the level gauge in the prior art cannot relieve external impact.
The invention is realized by the following technical scheme.
The invention discloses an anti-falling type level which comprises a chassis, a support, a top plate, a swinging body, a positioning ring, a positioning disc and a vibration locker, wherein the support is arranged between the chassis and the top plate and connects the chassis and the top plate, the upper end of the swinging body is in swinging connection with the top plate, the swinging body is provided with a laser emission unit, the anti-falling type level also comprises the positioning ring, the positioning disc and the vibration locker, the positioning disc is arranged on the upper side of the chassis, the upper surface of the positioning ring is connected with the support, the positioning ring is arranged on the upper surface of the positioning disc, the vibration locker connects the positioning ring with the positioning disc, the lower surface of the positioning ring is downwards protruded to form an annular positioning convex body, the upper surface of the positioning disc is provided with an annular positioning groove with an opening upwards, the side surface of the positioning convex body and the side surface of the positioning groove are conical surfaces, the positioning convex body is downwards inserted into the positioning groove and enables the conical surfaces of the positioning convex body and the positioning convex body to be attached to the damping cylinder, the side wall of the damping cylinder is provided with a bottom surface, the positioning ring is connected with the positioning ring and the damping cylinder, the damping cylinder is provided with a plurality of sealing grooves, and the sealing grooves are formed between the sealing grooves and the sealing grooves.
In the scheme, two connection modes are respectively an air floating mode and a fixed connection mode between the chassis and the bracket, the two modes are switched through the vibration locker, the fixed connection mode is in a default state, the vibration locker locks the positioning ring and the positioning disc, the positioning ring and the positioning disc realize self-positioning through conical surface matching, and the positioning accuracy is ensured; when the vibration locker detects that the level gauge is in a falling state or is impacted, an air floating mode is immediately unlocked, the positioning ring and the positioning disc are separated up and down, the connection relation between the positioning ring and the positioning disc is switched from a locking state to a movable state, the positioning ring and the positioning disc are completely and elastically connected by an elastic sealing film, external vibration is firstly transmitted to the positioning disc through a chassis, and the elastic sealing film filters part of vibration so as to reduce the impact on a core component in the level gauge, and the impact on a bracket, a top disc and a pendulum body connected to the positioning ring is relieved; meanwhile, in the vibration process, the damping cylinder moves in the damping groove, the volumes of the inner ring cavity and the outer ring cavity are continuously changed, the gas in the inner ring cavity and the gas in the outer ring cavity are mutually exchanged through the damping holes, and the vibration suffered by the core component of the level meter is reduced due to the fact that the gas exchange process is hindered by the damping holes, and the drop resistance of the level meter is further improved.
Preferably, the center of the positioning disc is provided with a circular groove, a first elastic leather film is arranged on the side wall of the circular groove, and a first gas space is formed by the first elastic leather film and the side wall of the circular groove.
In this scheme, when detecting the spirit level and receiving the impact, aerify in the first gas space, first elasticity involucra inflation to the lower extreme of parcel pendulum body, thereby hinder the free movement of pendulum body, reduce the impaired risk of spirit level striking.
Preferably, a second elastic coating is installed on the bottom surface of the circular groove, and a second gas space is formed between the second elastic coating and the bottom surface of the circular groove.
In this scheme, detect the spirit level and receive when striking, aerify in the second gas space, the inflation of second elastic coating to hold in the lower surface of pendulum body, further hinder the free activity of pendulum body.
Preferably, the lower surface of the positioning disk is provided with an air containing groove with a downward opening, a cover plate is sealed at the lower side opening of the air containing groove and forms a high-pressure air cavity, a plurality of vent holes are communicated between the high-pressure air cavity and the positioning groove, the vent holes are used for respectively communicating the high-pressure air cavity with the inner ring cavity and the outer ring cavity, and the vent holes upwards break through the conical surface of the positioning groove.
In this scheme, under fixed connection mode, go up the conical surface cooperation with the positioning disk, the conical surface shutoff air vent of go up the positioning ring, the gas in the high-pressure air chamber can't get into in the constant head tank, when the mode start-up of air floating, go up the air vent upper end intercommunication constant head tank, the gas promotes the positioning ring and breaks away from the positioning disk to get rid of rigid contact, external impact leads to the risk reduction that go up of positioning ring and positioning disk collision, has protected the locatability.
Preferably, the vibration locker comprises a vibration sensing unit and a locking unit, wherein the upper end of the locking unit is detachably connected with the positioning ring, the lower end of the locking unit is installed on the positioning disc, and the output end of the vibration sensing unit is electrically connected with the locking unit.
In this scheme, vibrations sensing unit is used for detecting outside impact, and locking unit is used for switching locking and unblock to the holding ring.
Preferably, the locking unit comprises a mounting part, a movable part and a claw part, wherein the mounting part is connected with the positioning disc, the movable part is connected with the positioning ring, the mounting part is provided with a movable cavity with an upward opening, the movable part is arranged in the movable cavity, the side surface of the movable part is provided with a clamping groove, the claw part is arranged in the movable cavity, and the claw part is clamped in the clamping groove and used for limiting the longitudinal movement of the movable part.
In this scheme, jack catch portion is movable in the activity chamber, and when it blocked in the draw-in groove, the unable upper and lower activity of movable part, the holding ring of connecting in movable part also can't reciprocate this moment, has realized the locking state to the holding ring, and when jack catch portion broke away from the draw-in groove, the movable part freely moves, and the holding ring of connecting in movable part also can freely move relatively the positioning disk.
Preferably, the locking unit further comprises a telescopic rod, a first movable disc and a second movable disc, a slot is formed in the lower end of the movable part, the first movable disc is longitudinally arranged in the slot in a sliding mode, an elastic piece is arranged between the first movable disc and the slot, the second movable disc is arranged below the first movable disc at intervals, the upper end of the telescopic rod is connected with the second movable disc, the claw part comprises a control rod which is rotationally connected to the inner wall of the movable cavity, and the control rod extends to the position between the second movable disc and the first movable disc.
In the scheme, in a default state, the movable part is inserted into the movable cavity from top to bottom, the elastic piece drives the first movable disc to push the operating rod downwards, the operating rod drives the whole claw part to rotate and clamp the clamping groove, and in the default state, the locking is realized; when the telescopic rod upwards pushes the second movable disc to move, the second movable disc upwards pushes the operating rod to rotate, the operating rod pushes the first movable disc to upwards extrude the elastic piece, and the operating rod drives the whole claw part to rotate and separate from the clamping groove, so that unlocking is realized.
Preferably, the periphery of the positioning ring is provided with a plurality of longitudinally penetrating mounting holes, an elastic piece is arranged between the mounting part and the positioning ring, the upper side of the movable part is provided with a threaded hole, and the screw penetrates through the mounting holes from top to bottom and is in threaded connection with the threaded hole.
In this scheme, the screw will fix a position ring and movable part fixed connection to when the control lever drove the jack catch and breaks away from the draw-in groove, the elastic component can upwards promote the holding ring removal, so that holding ring and positioning disk break away from rigid connection fast.
Preferably, the positioning disc comprises an inner ring part and an outer ring part, the inner ring part and the outer ring part are both connected to the chassis, the inner ring part is arranged in an inner ring of the outer ring part, a gap is formed between the inner ring part and the outer ring part, and the upper part and the lower part of the gap are respectively the positioning groove and the damping groove.
In this scheme, inner ring portion and outer ring portion pass through locating element and locking element to be connected on the chassis during the equipment, and the locating disk design is split type, the processing of being convenient for.
Preferably, the damping cylinder comprises two cylinders nested inside and outside, namely an inner cylinder and an outer cylinder, wherein the inner cylinder and the outer cylinder are connected in a rotating way, and a plurality of damping holes are formed in the side walls of the inner cylinder and the outer cylinder.
In this scheme, the inner cylinder and the outer cylinder are rotated so that the damping holes thereon are staggered for adjusting the flow cross section between the inner ring cavity and the outer ring cavity, thereby realizing the function of adjusting damping.
Preferably, the damping cylinder is made of elastic material, the damping hole is blocked, the inner annular cavity and the outer annular cavity are completely isolated to form a closed space, and gas is filled in the inner annular cavity and the outer annular cavity.
In this scheme, the damping hole has been cancelled, adopts the mode of gas elasticity floating connection completely, realizes the shock attenuation effect, reduces the structure, is convenient for make the installation.
The invention has the beneficial effects that: the chassis and the bracket are respectively provided with an air floating mode and a fixed connection mode, the two modes are switched through the vibration locker, the fixed connection mode is in a default state, the vibration locker is locked with the positioning ring and the positioning plate, the positioning ring and the positioning plate realize self-positioning through conical surface matching, and the positioning precision is ensured;
when the vibration locker detects that the level gauge is in a falling state or is impacted, an air floating mode is immediately unlocked, the positioning ring and the positioning disc are separated up and down, the connection relation between the positioning ring and the positioning disc is switched from a locking state to a movable state, the positioning ring and the positioning disc are completely and elastically connected by an elastic sealing film, external vibration is firstly transmitted to the positioning disc through a chassis, and the elastic sealing film filters part of vibration so as to reduce the impact on a core component in the level gauge, and the impact on a bracket, a top disc and a pendulum body connected to the positioning ring is relieved;
meanwhile, in the vibration process, the damping cylinder moves in the damping groove, the volumes of the inner ring cavity and the outer ring cavity are continuously changed, the gas in the inner ring cavity and the gas in the outer ring cavity are mutually exchanged through the damping holes, and the vibration suffered by the core component of the level meter is reduced due to the fact that the gas exchange process is hindered by the damping holes, and the drop resistance of the level meter is further improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a disassembled view of the retaining ring, retaining disk and vibration lock of fig. 1.
Fig. 3 is a schematic view of the bottom surface of the positioning ring in fig. 2.
Fig. 4 is a schematic view of the structure of the bottom surface of the puck in fig. 2.
Fig. 5 is a cross-sectional view of the retaining ring A-A of fig. 2.
Fig. 6 is a cross-sectional view of the puck of fig. 2 at B-B.
FIG. 7 is a cross-sectional view of the retaining ring and the retaining disk in floating engagement.
Fig. 8 is an enlarged schematic view of the vibration lock of fig. 2.
Fig. 9 is a longitudinal sectional view of the vibration locker of fig. 8.
Reference numerals illustrate:
10. a chassis;
11. a bracket;
12. a top plate;
13. a pendulum body;
14. a positioning ring;
15. a positioning plate;
16. a vibration locker;
17. positioning the convex body;
18. a positioning groove;
19. a damping cylinder;
20. a damping hole;
21. an inner annular cavity;
22. an outer annular cavity;
23. a circular groove;
24. a first elastic coating;
25. a second elastic coating;
26. a first gas space;
27. a second gas space;
28. a high pressure air cavity;
29. a vent hole;
30. a mounting part;
31. a movable cavity;
32. a movable part;
33. a clamping groove;
34. a clamping claw part;
35. a joystick;
36. a telescopic rod;
37. a first movable tray;
38. a second movable plate;
39. slotting;
41. a mounting hole;
42. a threaded hole;
43. an inner ring portion;
44. an outer ring portion;
45. a lower sealing film;
46. a threaded portion;
47. a hexagonal portion;
48. a threaded mounting hole;
49. an outer annular membrane;
50. an inner annular membrane;
51. a positioning pin;
52. a locking hole;
53. an air guide groove;
54. damping groove.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 9, wherein for convenience of description, the following orientations are defined as follows: the vertical, horizontal, front-rear directions described below are identical to the vertical, horizontal, front-rear directions of the projection relationship of fig. 1 itself.
Fig. 1 to 9 show an embodiment of an anti-falling type level according to the present invention, as shown in fig. 1, the anti-falling type level includes a base plate 10, a support 11, a top plate 12 and a pendulum 13, wherein the support 11 is disposed between the base plate 10 and the top plate 12 and connects the two, the upper end of the pendulum 13 is in swing connection with the top plate 12, and a laser emitting unit is mounted on the pendulum 13.
As shown in fig. 2, the anti-falling level further comprises a positioning ring 14, a positioning disk 15 and a vibration locker 16, the positioning disk 15 is mounted on the upper side of the chassis 10, the upper surface of the positioning ring 14 is connected with the bracket 11, the positioning ring 14 is arranged on the upper surface of the positioning disk 15, the vibration locker 16 is used for connecting the positioning ring 14 with the positioning disk 15, the lower surface of the positioning ring 14 protrudes downwards to form an annular positioning convex body 17, the upper surface of the positioning disk 15 is provided with an annular positioning groove 18 with an upward opening, the side surface of the positioning convex body 17 and the side surface of the positioning groove 18 are conical surfaces, and the positioning convex body 17 is inserted into the positioning groove 18 downwards and the conical surfaces of the positioning convex body and the positioning disk are attached.
As shown in fig. 5, in the present embodiment, the positioning convex body 17 is an annular protrusion, which has an inner conical surface and an outer conical surface, and the positioning groove 18 also has an inner conical surface and an outer conical surface, wherein the inner conical surface of the positioning convex body 17 is attached to the inner conical surface of the positioning groove 18, and the outer conical surface of the positioning convex body 17 is attached to the outer conical surface of the positioning groove 18, so as to achieve the effect of self-positioning matching of the two sets of conical surfaces. It should be noted that, in other embodiments of the present invention, the positioning protrusion 17 may have only one of the inner conical surface or the outer conical surface, and the positioning groove 18 may have a corresponding conical surface, so as to achieve self-positioning of a set of conical surfaces.
As shown in fig. 3, 5 and 7, the lower end of the positioning convex body 17 is provided with a damping cylinder 19, the side wall of the damping cylinder 19 is provided with a plurality of damping holes 20, the bottom surface of the positioning groove 18 is sunken to form an annular damping groove 54, the damping cylinder 19 is downwards inserted into the damping groove 54, the damping cylinder 19 separates the damping groove 54 and forms an inner ring cavity 21 and an outer ring cavity 22, the upper opening and the lower opening of the inner ring cavity 21 and the outer ring cavity 22 are respectively provided with an elastic sealing film, and the positioning ring 14 is connected with the positioning disk 15 through the elastic sealing films.
Specifically, the elastic sealing film includes two groups for closing the upper and lower openings of the inner ring cavity 21 and the outer ring cavity 22, respectively.
As shown in fig. 3, the elastic sealing film on the lower side is annular and named as a lower sealing film 45, the lower end of the damping cylinder 19 is connected with the lower sealing film 45, and as shown in fig. 7, the inner ring of the lower sealing film 45 is connected with the opening of the damping groove in a sealing manner.
As shown in fig. 7, the elastic sealing films on the upper side are an inner ring film 50 and an outer ring film 49, respectively, the inner ring edge of the inner ring film 50 is in sealing connection with the inner ring side wall of the positioning ring 14 and the upper surface of the positioning disk 15, and the inner ring of the outer ring film 49 is in sealing connection with the outer ring side wall of the positioning ring 14 and the upper surface of the positioning disk 15.
In this example, two connection modes are provided between the chassis 10 and the bracket 11, namely a fixed connection mode and an air floating mode, and the two modes are switched by the vibration locker 16;
first, fixed connection mode is the default state, and vibrations locker 16 will lock with holding ring 14 and positioning disk 15, and holding ring 14 and positioning disk 15 realize the self-align through the conical surface cooperation, guarantee the precision of location.
Second, in the air floating mode, when the vibration locker 16 detects that the level is falling or is impacted, the level is unlocked immediately, so that the positioning ring 14 and the positioning disk 15 are separated up and down, the connection relationship between the positioning ring 14 and the positioning disk 15 is switched from a locking state to a movable state, the positioning ring 14 and the positioning disk 15 are elastically connected through an elastic sealing film, external impact is firstly transmitted to the positioning disk 15 through the chassis 10, the elastic sealing film filters part of vibration, so that the impact on the bracket 11, the top disk 12 and the pendulum body 13 connected to the positioning ring 14 is reduced, meanwhile, in the vibration process, the damping cylinder 19 moves in the damping groove 54, and gases in the inner ring cavity 21 and the outer ring cavity 22 are mutually exchanged through the damping holes 20, and the vibration of a level core assembly is reduced due to the obstruction of the gas exchange process, so that the falling resistance of the level is improved.
Preferably, the center of the positioning disk 15 is provided with a circular groove 23, the side wall of the circular groove 23 is provided with a first elastic coating 24, and the first elastic coating 24 and the side wall of the circular groove 23 form a first gas space 26.
In this example, when the level is detected to be impacted, the first gas space 26 is inflated, the first elastic film 24 is inflated, and the lower end of the pendulum 13 is wrapped, so that the free movement of the pendulum 13 is blocked, and the risk of the impact damage of the level is reduced.
Preferably, the bottom surface of the circular groove 23 is provided with a second elastic film 25, and the second elastic film 25 and the bottom surface of the circular groove 23 form a second gas space 27.
In this example, when the level is detected to be impacted, the second air space 27 is inflated, and the second elastic film 25 expands and holds the lower surface of the pendulum 13, further preventing the free movement of the pendulum 13.
In particular, gas generating means are provided in the first gas space 26 and the second gas space 27.
Preferably, the lower surface of the positioning disk 15 is provided with a gas containing groove with a downward opening, a cover plate is sealed at the lower side opening of the gas containing groove and forms a high-pressure gas cavity 28, a plurality of vent holes 29 are communicated between the high-pressure gas cavity 28 and the positioning groove 18, the vent holes 29 respectively communicate the high-pressure gas cavity 28 with the inner ring cavity 21 and the outer ring cavity 22, and the vent holes 29 upwards break through the conical surface of the positioning groove 18.
In this example, in the fixed connection mode, the positioning ring 14 and the positioning disk 15 are matched through conical surfaces, the vent hole 29 is blocked by the conical surface of the positioning ring 14, gas in the high-pressure air cavity 28 cannot enter the positioning groove 18, when the air floating mode is started, the positioning ring 14 and the positioning disk 15 lose the locking force, the upper end of the vent hole 29 is communicated with the positioning groove, the gas pushes the positioning ring 14 to be separated from the positioning disk 15, so that rigid contact is avoided, the risk of collision between the positioning ring 14 and the positioning disk 15 caused by external impact is reduced, and the positioning property is protected.
In the present embodiment, the first gas space 26 and the second gas space 27 communicate with the positioning groove 18 with the gas guide groove 53, and the opening of the gas guide groove 53 is located on the tapered surface and on the upper side of the vent hole 29.
Preferably, the vibration locker 16 comprises a vibration sensing unit and a locking unit, wherein the upper end of the locking unit is detachably connected with the positioning ring 14, the lower end of the locking unit is arranged on the positioning disk 15, and the output end of the vibration sensing unit is electrically connected with the locking unit.
In this example, the shock sensing unit is used to detect an external impact, and the locking unit is used to switch locking and unlocking of the positioning ring 14.
Specifically, the vibration sensing unit includes a vibration detection module, an acceleration detection module, and an information processing unit, where the information processing unit is configured to process vibration and acceleration signals, determine whether a collision occurs, send an anti-collision signal to the locking unit, and perform an unlocking action on the positioning ring 14.
Preferably, the locking unit includes a mounting portion 30, a movable portion 32 and a claw portion 34, the mounting portion 30 is connected to the positioning disk 15, the movable portion 32 is connected to the positioning ring 14, the mounting portion 30 has a movable cavity 31 with an upward opening, the movable portion 32 is disposed in the movable cavity 31, a clamping groove 33 is formed on a side surface of the movable portion 32, a claw portion 34 is mounted in the movable cavity 31, and the claw portion 34 is clamped in the clamping groove 33 to limit longitudinal movement of the movable portion 32.
In particular, the outer wall of the mounting portion 30 has a threaded portion 46 and a hexagonal portion 47, and the positioning plate 15 is provided with a threaded mounting hole 48, and the mounting portion 30 is threadedly mounted in the threaded mounting hole 48.
In this example, the claw portion 34 moves in the movable cavity 31, when the claw portion is clamped in the clamping groove 33, the movable portion 32 cannot move up and down, and at this time, the positioning ring 14 connected to the movable portion 32 cannot move up and down, so that the locking state of the positioning ring 14 is achieved, when the claw portion 34 is separated from the clamping groove 33, the movable portion 32 is free to move, and the positioning ring 14 connected to the movable portion 32 can also move freely relative to the positioning disc 15.
Preferably, the locking unit further comprises a telescopic rod 36, a first movable disc 37 and a second movable disc 38, a slot 39 is formed at the lower end of the movable portion 32, the first movable disc 37 is longitudinally and slidably arranged in the slot 39, an elastic member is arranged between the first movable disc 37 and the slot 39, in this embodiment, the elastic member is a spring, the second movable disc 38 is arranged below the first movable disc 37 at intervals, the upper end of the telescopic rod 36 is connected with the second movable disc 38, the claw portion 34 comprises a control rod 35 rotatably connected to the inner wall of the movable cavity 31, and the control rod 35 extends between the second movable disc 38 and the first movable disc 37.
In this example, in the default state, the movable portion 32 is inserted into the movable cavity 31 from top to bottom, the elastic member drives the first movable disc 37 to push the lever 35 downward, and the lever 35 drives the whole clamping portion 34 to rotate and clamp the clamping groove 33, so that the locking is performed in the default state.
When the telescopic rod 36 receives the unlocking signal, the telescopic rod 36 stretches and drives the operating rod 35 to perform unlocking action, the telescopic rod 36 pushes the second movable disc 38 upwards to move, the second movable disc 38 pushes the operating rod 35 upwards to rotate, the operating rod 35 pushes the first movable disc 37 to upwards squeeze the elastic piece, and the operating rod 35 drives the whole clamping claw portion 34 to rotate and separate from the clamping groove 33, so that unlocking is achieved.
Preferably, the periphery of the positioning ring 14 is provided with a plurality of mounting holes 41 penetrating longitudinally, and an elastic member is arranged between the mounting portion 30 and the positioning ring 14, in this embodiment, the elastic member is a spring, the upper side of the movable portion 32 is provided with a threaded hole 42, and the screw penetrates through the mounting hole 41 from top to bottom and is connected with the threaded hole 42 in a threaded manner.
In this example, the positioning ring 14 and the movable portion 32 are fixedly connected by the screw, and when the lever 35 drives the claw to disengage from the clamping groove 33, the elastic member can push the positioning ring 14 upward to move, so that the positioning ring 14 and the positioning disk 15 are quickly disengaged from the rigid connection.
Preferably, the positioning disk 15 includes an inner ring portion 43 and an outer ring portion 44, the inner ring portion 43 and the outer ring portion 44 are both connected to the chassis 10, the inner ring portion 43 is disposed in the inner ring of the outer ring portion 44, a gap is formed between the inner ring portion 43 and the outer ring portion 44, and an upper portion and a lower portion of the gap are the positioning groove 18 and the damping groove 54, respectively.
In this example, the inner ring portion 43 and the outer ring portion 44 are connected to the chassis 10 by a positioning element and a locking element during assembly, and the positioning disc 15 is designed as a split type, so that the processing is facilitated.
Specifically, the lower surfaces of the inner ring portion 43 and the outer ring portion 44 are provided with a plurality of positioning pins 51 and locking holes 52, and an annular gas storage box is provided in a gap between the bottoms of the inner ring portion 43 and the outer ring portion 44.
Preferably, the damping cylinder 19 comprises two cylinders nested inside and outside, namely an inner cylinder and an outer cylinder, which are rotationally connected, and a plurality of damping holes 20 are formed on the side walls of the inner cylinder and the outer cylinder. In this example, the inner cylinder and the outer cylinder are rotated so that the damping holes 20 thereon are staggered for adjusting the flow cross section between the inner ring cavity 21 and the outer ring cavity 22, thereby achieving the effect of adjusting damping.
Preferably, the damping cylinder 19 is made of elastic material, blocks the damping hole 20, completely isolates the inner ring cavity 21 and the outer ring cavity 22 to form a closed space, and fills gas into the inner ring cavity 21 and the outer ring cavity 22.
In this example, the damping hole 20 is omitted, and the air elastic floating connection mode is completely adopted, so that the damping effect is achieved, structural members are reduced, and the manufacturing and the installation are convenient.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and implement it without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (9)
1. An anti-falling type level comprises a chassis, a bracket, a top plate and a pendulum body, wherein the bracket is arranged between the chassis and the top plate and connects the chassis and the top plate, the upper end of the pendulum body is connected with the top plate in a swinging way, a laser emission unit is arranged on the pendulum body,
the anti-falling type level meter further comprises a positioning ring, a positioning disc and a vibration locker, wherein the positioning disc is arranged on the upper side of the chassis, the upper surface of the positioning ring is connected with the bracket, the positioning ring is arranged on the upper surface of the positioning disc, and the vibration locker is used for connecting the positioning ring with the positioning disc;
the lower surface of the positioning ring protrudes downwards to form an annular positioning convex body, the upper surface of the positioning disk is provided with an annular positioning groove with an upward opening, the side surface of the positioning convex body and the side surface of the positioning groove are conical surfaces, and the positioning convex body is inserted into the positioning groove downwards and enables the conical surfaces of the positioning convex body and the positioning groove to be attached;
the lower end of the positioning convex body is provided with a damping cylinder, the side wall of the damping cylinder is provided with a plurality of damping holes, the bottom surface of the positioning groove is sunken to form an annular damping groove, the damping cylinder is downwards inserted into the damping groove, the damping cylinder separates the damping groove and forms an inner ring cavity and an outer ring cavity, the upper opening and the lower opening of the inner ring cavity and the lower opening of the outer ring cavity are respectively provided with an elastic sealing film, and the positioning ring and the positioning disk are connected through the elastic sealing films;
the vibration locker comprises a vibration sensing unit and a locking unit, wherein the upper end of the locking unit is detachably connected with the positioning ring, the lower end of the locking unit is installed on the positioning disc, and the output end of the vibration sensing unit is electrically connected with the locking unit.
2. The anti-drop level according to claim 1, wherein the center of the positioning disk has a circular groove, a first elastic coating is mounted on the side wall of the circular groove, and the first elastic coating and the side wall of the circular groove form a first gas space;
and/or a second elastic coating is arranged on the bottom surface of the round groove, and a second gas space is formed between the second elastic coating and the bottom surface of the round groove.
3. The anti-falling type level according to claim 1, wherein the lower surface of the positioning disk is provided with a gas containing groove with a downward opening, a cover plate is sealed at the lower side opening of the gas containing groove, a high-pressure air cavity is formed, a plurality of vent holes are communicated between the high-pressure air cavity and the positioning groove, the vent holes respectively communicate the high-pressure air cavity with the inner ring cavity and the outer ring cavity, and the vent holes upwards break through the conical surface of the positioning groove.
4. The anti-drop level according to claim 1, wherein the locking unit comprises a mounting portion, a movable portion and a claw portion, the mounting portion is connected to the positioning plate, the movable portion is connected to the positioning ring, the mounting portion has a movable cavity with an upward opening, the movable portion is disposed in the movable cavity, a clamping groove is formed in a side surface of the movable portion, the claw portion is mounted in the movable cavity, and the claw portion is clamped in the clamping groove to limit longitudinal movement of the movable portion.
5. The drop resistant level as defined in claim 4, wherein the locking unit further comprises a telescopic rod, a first movable plate and a second movable plate, the lower end of the movable plate is provided with a slot, the first movable plate is longitudinally and slidably arranged in the slot, an elastic member is arranged between the first movable plate and the slot, the second movable plate is arranged below the first movable plate at intervals, the upper end of the telescopic rod is connected with the second movable plate, the claw part comprises a control rod rotatably connected to the inner wall of the movable cavity, and the control rod extends between the second movable plate and the first movable plate.
6. The drop-resistant level as claimed in claim 4, wherein a plurality of mounting holes are formed in the periphery of the positioning ring, an elastic member is arranged between the mounting portion and the positioning ring, a threaded hole is formed in the upper side of the movable portion, and a screw penetrates through the mounting holes from top to bottom and is connected to the threaded hole in a threaded manner.
7. The anti-drop level according to claim 1, wherein the positioning disk comprises an inner ring portion and an outer ring portion, the inner ring portion and the outer ring portion are both connected to the chassis, the inner ring portion is disposed in the inner ring of the outer ring portion, a gap is formed between the inner ring portion and the outer ring portion, and the upper portion and the lower portion of the gap are the positioning groove and the damping groove respectively.
8. The anti-drop level according to claim 1, wherein the damping cylinder comprises two cylinders nested inside and outside, an inner cylinder and an outer cylinder respectively, the inner cylinder and the outer cylinder are rotationally connected, and a plurality of damping holes are formed in the side walls of the inner cylinder and the outer cylinder.
9. The anti-drop level according to claim 1, wherein the damping cylinder is made of elastic material, the damping hole is sealed, the inner annular cavity and the outer annular cavity are completely isolated to form a closed space, and gas is filled in the inner annular cavity and the outer annular cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311457836.XA CN117167613B (en) | 2023-11-04 | 2023-11-04 | Anti type spirit level that falls |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311457836.XA CN117167613B (en) | 2023-11-04 | 2023-11-04 | Anti type spirit level that falls |
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| CN117167613B true CN117167613B (en) | 2024-01-23 |
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| CN216846261U (en) * | 2021-11-08 | 2022-06-28 | 上海敏泰交通设施工程有限公司 | Anti structure and laser striping machine that fall of laser striping machine |
| US20230313859A1 (en) * | 2021-02-23 | 2023-10-05 | Shandong University Of Science And Technology | Composite impact resistance apparatus and applications thereof |
| CN219914427U (en) * | 2023-04-18 | 2023-10-27 | 河南江华工量具有限公司 | Laser level meter |
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| CN106763432A (en) * | 2015-11-20 | 2017-05-31 | 巴南区伟鹏机械加工厂 | Impact attenuating devices |
| CN106835958A (en) * | 2016-12-29 | 2017-06-13 | 北京建筑大学 | A kind of three-dimensional shock isolation support |
| CN112857332A (en) * | 2019-11-27 | 2021-05-28 | 苏州宝时得电动工具有限公司 | Laser level meter |
| US20230313859A1 (en) * | 2021-02-23 | 2023-10-05 | Shandong University Of Science And Technology | Composite impact resistance apparatus and applications thereof |
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| CN117167613A (en) | 2023-12-05 |
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