A kind of underground utilities marker
Technical field
This utility model relates to the location technology of underground utilities, specifically, is a kind of underground utilities marker.
Background technology
Most of antennas are all have an optimum orientation, for instance the optimum orientation of helical antenna is perpendicular to (as shown in Figure 10) of helicoid.In the actual product adopting antenna, sometimes use at the scene and compare the direction being difficult to ensure card antenna, such as it is embedded in underground for indicating the radio frequency positioning marker of underground utilities position for one, if simply the profile according to antenna designs shell (as shown in figure 11), but when it is buried to underground underground, due to all factors, it is perfectly level that workmen is difficult to ensure that shell is put, thus also ensure that the direction of antenna can be vertical level upwards.Therefore for the product of this kind of underground utilities marker, it is need design one to may insure that no matter how workmen places, all can allow the device of antenna direction automatic maintenance level vertically upward all the time of inside.At present, only the product of 3M company is because adopting sealing liquid as the floating carrier of antenna, thus antenna can be made to rely on to waft and keep afloat, is automatically kept level.But the shortcoming of this product is that sealing requirements is high, thus manufacturing cost is high;And, somewhat leakage and whole product rejection and to environment.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, reliable in quality and underground utilities marker with low cost.
To achieve these goals, the technical scheme that this utility model is is as follows:
A kind of underground utilities marker, has a shell containing radio-frequency antenna, and described radio-frequency antenna is installed on the horizontal base of an automatic balancing arrangement in the enclosure.
As further improvement of the utility model, described automatic balancing arrangement is vertical type balance ring, including the upright ring rotated freely around 360 degree of same axis of more than two;Ball bearing circle it is cased with respectively so that every upright ring can be made freely rotatable by circumferencial direction again in every upright ring;Described horizontal base is level, and vertical each other with interior upright ring.
As further improvement of the utility model, described upright ring includes the fixing support of connection of two inner rings vertical each other and outer ring composition;The inside socket ball bearing circle of described inner ring is connected with the internal ring of circular-rotation, and internal ring is vertical with described horizontal base again to be fixed;The outside socket ball bearing circle of described outer ring is connected with the outer shroud of circular-rotation.
As further improvement of the utility model, described automatic balancing arrangement is can the horizontal loops of 360 degree of more than at least two rotated freely constituting of being surrounded by the horizontal base being horizontally arranged at central authorities and same level;The direction of rotation of each horizontal loops staggers each other.
As further improvement of the utility model, described horizontal loops is allocated as internal ring and the outer shroud of circle;The two is concentric and direction of rotation is vertical each other.
As further improvement of the utility model, the circumference of described internal ring being symmetrically distributed with 4 and connects short axle, the short axle of described connection has 2 to be movably connected with outer shroud outwardly, has 2 to be movably connected with horizontal base inwardly.
As further improvement of the utility model, the shape of described internal ring and outer shroud can be circular or square or other shape.
As further improvement of the utility model, described outer shroud, along its circumferential both sides natural expansion, forms spherical shell.
As further improvement of the utility model, described shell is independent box body, be shaped as spheroid, cube, cylinder or other.
As further improvement of the utility model, described shell is provided with tethered unit;Described tethered unit can be orifice ring, more than at least two, is symmetric.
Compared to existing technology, the beneficial effects of the utility model are in that:
1, simple in construction, only need to arrange in the enclosure one or more can 360 degree rotate rings can realize autobalance, cost is low.
2, safe and reliable, it does not have internal-filling liquid body, it is simple to install and manufacture and environmental protection.
3, spherical housing sets tethered unit, it is simple to fix with underground buried tube, make construction more convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment (when upper cover is opened) of this utility model.
Fig. 2 is the structural representation of the internal ring in Fig. 1.
Fig. 3 is the top view of Fig. 1 (after upper cover removal).
Fig. 4 is the structural representation of the horizontal base in Fig. 1.
Fig. 5 is the top view of Fig. 1 (upper cover close after).
Fig. 6 is the three-dimensional view of Fig. 5.
Fig. 7 is the structural representation of another specific embodiment of this utility model (upper cover is not drawn).
Fig. 8 is the top view of Fig. 7.
Fig. 9 is the structural representation of another specific embodiment of this utility model (shell is not drawn).
Figure 10 is the schematic diagram of helical antenna.
Figure 11 be general the outline drawing of a kind of underground utilities marker.
Detailed description of the invention
The technical solution of the utility model is further illustrated below by specification drawings and specific embodiments.
Fig. 1, to shown in 6 being a kind of underground utilities marker of the present utility model, has a shell 1 containing radio-frequency antenna, and shell 1 is allocated as upper and lower two parts, buries the antenna structure within the protection of underground after closing underground.Radio-frequency antenna may be installed in an automatic balancing arrangement in shell 1, and this automatic balancing arrangement is usually by the horizontal base 2 being horizontally arranged at central authorities, and can the horizontal loops of 360 degree of more than at least two rotated freely being constituted of surrounding of same level;The direction of rotation of each horizontal loops staggers each other, so that no matter which angle tilting shell 1 from, all can make to produce a contrary amount of spin between the horizontal base 2 at center and the ring rotated and offseting, remaining unchanged so that horizontal base 2 is always horizontal level.Horizontal loops can be circular or square or other shape, as long as horizontal loops rotates then amount of spin and decomposable asymmetric choice net, thus automatically keeping the effect of level also still effective.
Fig. 9 is a specific embodiment of the present utility model, and it has two concentric horizontal circular rings as balance ring, i.e. internal ring 3 and outer shroud 4.The circumference of internal ring 3 is symmetrically distributed with 4 and connects short axle 6, connecting short axle 6 has 2 to be movably connected with outer shroud 4 outwardly, 2 are had to be movably connected with horizontal base 2 inwardly, therefore the direction of rotation of internal ring 3 and outer shroud 4 is vertical each other, namely at least ensure that no matter whichaway tilts shell, can force the horizontal base 2 at center under gravity, produce the amount of spin contrary with inner and outer rings respectively, thus being held in place, it is achieved level.
It is not drawn into the shell covered on outside inner and outer rings in fig .9.Shell, as the individual components of protection inner and outer rings, generally can be designed to spheroid, cube, cylinder or other variously-shaped box body according to field condition.But in actual applications with spheroid for many, it is therefore an objective to be easy to manufacture and bury underground.
For the structure in Fig. 9, it is possible to be modified into the structure of the most preferred embodiment such as Fig. 1 further, by outer shroud 4 along its circumferential both sides natural expansion, form spherical shell 1, thus the shell in alternate figures 9, simplify structure, reduce cost.
It addition, add tethered unit at shell 1, it is simple to fix with underground buried tube.Tethered unit can be orifice ring 5 as shown in Figure 5 and Figure 6, it is simple to wire rope handling;It is typically designed as more than two, is symmetric, it is simple to mutually can fix by wound form, also allow for when one of them annular distance 5 damages, unlikely make whole shell all cannot fix.
Additionally, the automatic balancing arrangement of another different structure of the present utility model, i.e. vertical type balance ring;The upright ring rotated freely around 360 degree of same axis of more than two can be included;Ball bearing circle it is cased with respectively so that every upright ring can be made freely rotatable by circumferencial direction again in every upright ring;A kind of specific embodiment as shown in Figure 7 and Figure 8, forms including inner ring 7 vertical each other and outer ring 8 and connects fixing support;Inner ring 7 is vertically arranged, and its internal socket ball bearing circle 71 is connected with the internal ring 3 of circular-rotation, and internal ring 3 is vertical with described horizontal base 2 again to be fixed;Outer ring 8 is also for being vertically arranged, outside socket ball bearing circle 81 is connected with the outer shroud 4 of circular-rotation, so also ensures in the vertical direction, no matter during whichaway inclination, by the rotation of internal ring 3 and outer shroud 4, still make horizontal base 2 produce amount of spin by gravity and be maintained on horizontal level.
Finally, it is necessary to explanation, the specific embodiment described in this specification, its be named title of technology contents etc. can be different.All equivalences done according to the structure described in this utility model inventional idea, feature and principle or simple change, be all included in the protection domain of this utility model patent.All deformation that those of ordinary skill in the art can directly derive from this utility model disclosure or associate, are all considered as protection domain of the present utility model.