CN102042845A - Measuring instrument with support legs - Google Patents
Measuring instrument with support legs Download PDFInfo
- Publication number
- CN102042845A CN102042845A CN2009102357845A CN200910235784A CN102042845A CN 102042845 A CN102042845 A CN 102042845A CN 2009102357845 A CN2009102357845 A CN 2009102357845A CN 200910235784 A CN200910235784 A CN 200910235784A CN 102042845 A CN102042845 A CN 102042845A
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- spike
- side wall
- sub
- surveying instrument
- arm
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Abstract
The invention relates to a measuring instrument with support legs. The measuring instrument comprises a measuring instrument main body, wherein the lower part of the back surface of the measuring instrument main body is fixedly connected with a limiting structure and a rear support leg which is in rotatable connection with the limiting structure; the limiting structure comprises a fixing device fixed at the lower part of the back surface of the measuring instrument main body and a cable-stayed bridge; one end of the cable-stayed bridge is in sliding connection with the fixing device; and the other end of the cable-stayed bridge is in rotatable connection with the rear support leg. The support legs of the measuring instrument provided by the invention are in a hinge structure; the force applied to the rear support leg and the cable-stayed bridge is tension and pressure; the shear stress of the support leg structure is small; the support legs are not easy to deform; the entire structure has good rigidity; the support legs are suitable for wide support range of the measuring instrument; the measuring instrument does not tilt easily; and the support legs can support the inclination angles under the visual requirements of different inclined surfaces of the measuring instrument.
Description
Technical field
The present invention relates to a kind of surveying instrument, relate in particular to a kind of surveying instrument with spike.
Background technology
At present, the surveying instrument of existing band spike is referring to shown in Fig. 1-5, comprises the preceding spike 3 ' be located between described instrument panel 1 ' and adjacent position, back cover 2 ' lower surface and is located at back cover 2 ' bottom surface is connected the corner with the back side back lag 4 '; Spike 3 is provided with rotating shaft 31 ', groove 32 ' and groove 33 ' before described; The outstanding protuberance that is provided with symmetry in described back cover 2 ' bottom surface, this protuberance opposite face is provided with square groove 21 ' symmetrically, and described back cover 2 ' bottom surface also is provided with convex 22 '; Described instrument panel 1 ' bottom surface is provided with a protuberance corresponding to the protuberance position of back cover 2 ' symmetry is outstanding, and the position between corresponding back cover 2 ' the symmetrical protuberance of a protuberance of instrument panel 1 ' is provided with a seamed edge 11 '; The rotating shaft 31 ' of spike 3 ' is stuck in the square groove 21 ' of back cover 2 ' before described, and preceding spike 3 ' can serve as that axle rotates with rotating shaft 31 '.
As shown in Figure 1, when current spike 3 ' was positioned at horizontal level, the groove 32 ' of preceding spike 3 ' was stuck on the convex 22 ' of instrument back cover 2 ', and instrument interface is basically perpendicular to desktop.Behind the current spike 3 ' Unscrew, the groove 33 ' of preceding spike 3 ' is stuck on the convex 22 ' of instrument back cover 2 ', and instrument interface and desktop can produce an inclination angle.This moment, the seamed edge 11 ' of panel 1 ' withstood preceding spike 3 ', and preceding spike 3 ' is subjected to the effect of F1, F2, three equilibrant of N, forms a lever construction.Under this state, whole spike structure has bigger shear stress, distortion allowance is big, integral rigidity poor (both structural strength was poor), and when the ratio of instrument gauge and height dimension than hour, as preceding spike 3 ' is opened, the center of gravity of instrument supports narrow range, and putting easily that instrument can't be stable toppled over.
Summary of the invention
Technical matters to be solved by this invention provides a kind of surveying instrument with spike, and the shear stress of this instrument spike structure is little, and spike is not yielding, the one-piece construction good rigidly, and the instrument that spike adapts to supports wide ranges, and instrument is difficult for toppling over.
For solving the problems of the technologies described above, the present invention adopts following technical proposals: a kind of surveying instrument with spike comprises the surveying instrument main body, the back lag that described surveying instrument main body lower backside is fixedly connected with position limiting structure and is rotationally connected with position limiting structure; Described position limiting structure comprises the stationary installation and the cable-stayed bridge that are fixed on surveying instrument main body lower backside, and an end and the described stationary installation of described cable-stayed bridge are slidingly connected, and the other end of described cable-stayed bridge and described back lag are rotationally connected; Described position limiting structure is the amplitude that struts that is used to limit described back lag, to satisfy the vision requirement of surveying instrument differing tilt angles.
Described stationary installation comprises symmetrically arranged first fixed part and second fixed part, the madial wall of described first fixed part is provided with first chute and the first firmware axial trough, and the madial wall of described second fixed part is provided with second chute and the second firmware axial trough corresponding to the first fixed part corresponding position.
Each outstanding at least one limiting tooth that is provided with of the inner wall position place of described first chute and the second chute correspondence, with the sliding distance of restriction cable-stayed bridge in chute, spike can be supported the inclination angle that the different dip plane of surveying instrument vision requires.
The outstanding respectively first outstanding wheel shaft and the second outstanding wheel shaft that be provided with in one end both sides of described cable-stayed bridge, the described first outstanding wheel shaft and the second outstanding wheel shaft snaps in respectively in first chute and second chute; The other end of described cable-stayed bridge is a bifurcation structure, described bifurcation structure comprises from the other end of described cable-stayed bridge and extends one first sub-arm, second a sub-arm and be located at the described first sub-arm respectively and first rotating mechanism and second rotating mechanism of the second sub-arm end that the described first sub-arm and the second sub-arm are rotationally connected by its rotating mechanism and described back lag respectively.
The rotating mechanism of the described first sub-arm and the second sub-arm is rotating shaft or jack simultaneously.
Described back lag comprises left side wall, right side wall, upper side wall, lower wall, first cavity, second cavity, spike rotating shaft and spike sprue; The top of described left side wall is provided with first upper shaft hole, described right side wall and the corresponding position of described first upper shaft hole are provided with second upper shaft hole, and described first upper shaft hole is connected with the second firmware axial trough with described second upper shaft hole with the spike sprue by the spike rotating shaft in described first cavity with the first firmware axial trough.
The left side wall of described back lag and right side wall bottom are respectively arranged with and the suitable first time jack of the rotating mechanism of the first sub-arm and the second sub-arm and second time jack or first lower rotary shaft and second lower rotary shaft; The left side wall of described back lag is provided with the first empty avoiding groove, with first of the ccontaining collapsed state surveying instrument spike cable-stayed bridge outstanding wheel shaft, the corresponding first empty avoiding groove location place is provided with the second empty avoiding groove on the described right side wall, with second of the ccontaining collapsed state surveying instrument spike cable-stayed bridge outstanding wheel shaft, be provided with the intersection reinforcement in described second cavity.
The outside surface of described back lag upper side wall is provided with a duck ligulate projection, be provided with between first fixed part of described stationary installation and the second fixed part upper surface one with described duck ligulate projection be complementary and engage protruding stupefied, when described cable-stayed bridge slides into the chute bottom of stationary installation, described duck ligulate projection is fastened on described protruding stupefied inboard, strengthens the steadiness that the surveying instrument spike supports when the surveying instrument accident is rocked.
The outside surface of described back lag left side wall is or/and the outside surface of back lag right side wall is provided with a circular snap fit tabs, so that when described cable-stayed bridge slided into the chute top when surveying instrument spike was packed up, described circular snap fit tabs is connected in described first chute or/and the second chute inboard.
Principle of work
At first, first upper shaft hole and second upper shaft hole with the surveying instrument back lag aligns with the first firmware axial trough and the second firmware axial trough of stationary installation respectively; A spike rotating shaft is penetrated first upper shaft hole of back lag and the first firmware axial trough of stationary installation successively, another spike rotating shaft is penetrated second upper shaft hole of back lag and the second firmware axial trough of stationary installation successively; The spike sprue is filled in first cavity of back lag, made the spike rotating shaft can not come off; Then, with the cable-stayed bridge certain angle that tilts, the first outstanding wheel shaft and the second outstanding wheel shaft of cable-stayed bridge snapped in first chute and second chute of stationary installation respectively; Then, by the first sub-arm of cable-stayed bridge and the elastic deformation of the second sub-arm working of plastics, the rotating shaft of the cable-stayed bridge first sub-arm and the second sub-arm is sticked into respectively in the first time jack and second time jack of back lag; At last, the surveying instrument spike of assembling being finished is fixed in the bottom at the surveying instrument back side.
The spike of surveying instrument of the present invention is a kind of hinge arrangement, the suffered power of back lag and cable-stayed bridge is pressure, the shear stress of spike structure is little, spike is not yielding, the one-piece construction good rigidly, the surveying instrument that spike adapts to supports wide ranges, and surveying instrument is difficult for toppling over, and spike can be supported the inclination angle that the different dip plane of surveying instrument vision requires.
Description of drawings
Fig. 1 is the structural representation of prior art instrument spike when not opening;
Fig. 2 is the structural representation of prior art instrument spike open mode;
Fig. 3 is the stressed synoptic diagram of local structure for amplifying of Fig. 2;
Fig. 4 is the preceding spike structural representation of prior art;
Fig. 5 is that instrument panel, back cover and the spike position of prior art concerns synoptic diagram;
Fig. 6 is a structure stress distribution schematic diagram of the present invention;
Fig. 7 is a structural representation of the present invention;
Fig. 8 is a fixture structure synoptic diagram of the present invention;
Fig. 9 is a cable-stayed bridge structural representation of the present invention;
Figure 10 is a back lag decomposition texture synoptic diagram of the present invention;
Figure 11 is another embodiment of the present invention structural representation.
Embodiment
Referring to Fig. 6-shown in Figure 10, a kind of surveying instrument with spike comprises surveying instrument main body 3, the back lag 2 that described surveying instrument main body 3 lower backside are fixedly connected with position limiting structure 1 and are rotationally connected with position limiting structure 1; Described position limiting structure 1 comprises the stationary installation 11 and the cable-stayed bridge 12 that are fixed on surveying instrument main body 3 lower backside, one end and the described stationary installation 11 of described cable-stayed bridge 12 are slidingly connected, and the other end of described cable-stayed bridge 12 and described back lag 2 are rotationally connected.
Described stationary installation 11 comprises symmetrically arranged first fixed part 111 and second fixed part 112, the madial wall of described first fixed part 111 is provided with first chute 1111 and the first firmware axial trough 1112, and the madial wall of described second fixed part 112 is provided with second chute 1121 and the second firmware axial trough 1122 corresponding to first fixed part, 111 corresponding positions.
The outstanding respectively first outstanding wheel shaft 121 and the second outstanding wheel shaft 122 that be provided with in one end both sides of described cable-stayed bridge 12, the described first outstanding wheel shaft 121 and the second outstanding wheel shaft 122 snaps in respectively in first chute 1111 and second chute 1121; The other end of described cable-stayed bridge 12 is a bifurcation structure, described bifurcation structure comprises from the other end of described cable-stayed bridge 12 and extends one first sub-arm 123, second a sub-arm 124 and be located at the described first sub-arm 123 respectively and first rotating mechanism 1231 and second rotating mechanism 1241 of the second sub-arm, 124 ends that the described first sub-arm 123 and the second sub-arm 124 are rotationally connected by its rotating mechanism 1231,1241 and described back lag 2 respectively.
The rotating mechanism 1231,1241 of the described first sub-arm 123 and the second sub-arm 124 is all rotating shaft.
Described back lag 2 comprises left side wall 21, right side wall 22, upper side wall 23, lower wall 24, first cavity 25, second cavity 26, spike rotating shaft 27 and spike sprue 28; The top of described left side wall 21 is provided with first upper shaft hole 211, described right side wall 22 is provided with second upper shaft hole 221 with described first upper shaft hole 211 corresponding positions, and described first upper shaft hole 211 is connected with the second firmware axial trough 1122 with described second upper shaft hole 221 with spike sprue 28 by spike rotating shaft 27 in described first cavity 25 with the first firmware axial trough 1112.
The left side wall 21 of described back lag 2 and right side wall 22 bottoms are respectively arranged with first time jack 212 and the second time jack 222 suitable with the rotating mechanism of the first sub-arm 123 and the second sub-arm 124; The left side wall 21 of described back lag 2 is provided with the first empty avoiding groove 213, and the corresponding first empty avoiding groove 213 positions are provided with the second empty avoiding groove 223 on the described right side wall 22, is provided with intersection reinforcement 261 in described second cavity 26.
The outside surface of described back lag 2 left side walls 21 and right side wall 22 is respectively equipped with a circular snap fit tabs 214,224.
Referring to shown in Figure 11, a kind of surveying instrument with spike, its difference from Example 1 is, each outstanding limiting tooth 1113,1123 that is provided with of the inner wall position place of described first chute 1111 and second chute, 1121 correspondences.
The outside surface of described back lag 2 upper side walls 23 is provided with a duck ligulate projection 231, be provided with between first fixed part 111 of described stationary installation 11 and second fixed part, 112 upper surfaces one with described duck ligulate projection 231 be complementary engage protruding stupefied 113.
As mentioned above, a kind of surveying instrument of the present invention, described embodiment and figure with spike; it is the present invention's implementation result preferably; be not to be confined to the present invention, approximate, identical person such as structure every and of the present invention, feature all should belong to the scope of protection of the invention.
Claims (9)
1. the surveying instrument with spike comprises the surveying instrument main body; It is characterized in that: the back lag that described surveying instrument main body lower backside is fixedly connected with position limiting structure and is rotationally connected with position limiting structure; Described position limiting structure comprises the stationary installation and the cable-stayed bridge that are fixed on surveying instrument main body lower backside, and an end and the described stationary installation of described cable-stayed bridge are slidingly connected, and the other end of described cable-stayed bridge and described back lag are rotationally connected.
2. a kind of surveying instrument according to claim 1 with spike, it is characterized in that: described stationary installation comprises symmetrically arranged first fixed part and second fixed part, the madial wall of described first fixed part is provided with first chute and the first firmware axial trough, and the madial wall of described second fixed part is provided with second chute and the second firmware axial trough corresponding to the first fixed part corresponding position.
3. a kind of surveying instrument with spike according to claim 2 is characterized in that: each outstanding at least one limiting tooth that is provided with of the inner wall position place of described first chute and the second chute correspondence.
4. a kind of surveying instrument according to claim 2 with spike, it is characterized in that: the outstanding respectively first outstanding wheel shaft and the second outstanding wheel shaft that be provided with in end both sides of described cable-stayed bridge, the described first outstanding wheel shaft and the second outstanding wheel shaft snaps in respectively in first chute and second chute; The other end of described cable-stayed bridge is a bifurcation structure, described bifurcation structure comprises from the other end of described cable-stayed bridge and extends one first sub-arm, second a sub-arm and be located at the described first sub-arm respectively and first rotating mechanism and second rotating mechanism of the second sub-arm end that the described first sub-arm and the second sub-arm are rotationally connected by its rotating mechanism and described back lag respectively.
5. a kind of surveying instrument with spike according to claim 4 is characterized in that: the rotating mechanism of the described first sub-arm and the second sub-arm is rotating shaft or jack simultaneously.
6. a kind of surveying instrument with spike according to claim 2 is characterized in that: described back lag comprises left side wall, right side wall, upper side wall, lower wall, first cavity, second cavity, spike rotating shaft and spike sprue; The top of described left side wall is provided with first upper shaft hole, described right side wall and the corresponding position of described first upper shaft hole are provided with second upper shaft hole, and described first upper shaft hole is connected with the second firmware axial trough with described second upper shaft hole with the spike sprue by the spike rotating shaft in described first cavity with the first firmware axial trough.
7. a kind of surveying instrument with spike according to claim 6 is characterized in that: the left side wall of described back lag and right side wall bottom are respectively arranged with and the suitable first time jack of the rotating mechanism of the first sub-arm and the second sub-arm and second time jack or first lower rotary shaft and second lower rotary shaft; The left side wall of described back lag is provided with the first empty avoiding groove, and the corresponding first empty avoiding groove location place is provided with the second empty avoiding groove on the described right side wall, is provided with the intersection reinforcement in described second cavity.
8. a kind of surveying instrument according to claim 7 with spike, it is characterized in that: the outside surface of described back lag upper side wall is provided with a duck ligulate projection, be provided with between first fixed part of described stationary installation and the second fixed part upper surface one with described duck ligulate projection be complementary and engage protruding stupefied.
9. according to claim 1,2,3,4,5,6,7 or 8 described a kind of surveying instruments with spike, it is characterized in that: the outside surface of described back lag left side wall is or/and the outside surface of back lag right side wall is provided with a circular snap fit tabs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102357845A CN102042845A (en) | 2009-10-15 | 2009-10-15 | Measuring instrument with support legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102357845A CN102042845A (en) | 2009-10-15 | 2009-10-15 | Measuring instrument with support legs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042845A true CN102042845A (en) | 2011-05-04 |
Family
ID=43909199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102357845A Pending CN102042845A (en) | 2009-10-15 | 2009-10-15 | Measuring instrument with support legs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042845A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953827A (en) * | 2016-04-22 | 2016-09-21 | 西安航空制动科技有限公司 | Hinge for flip detector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556189A (en) * | 1984-02-06 | 1985-12-03 | At&T Teletype Corporation | CRT Monitor tilt mechanism |
| US5366197A (en) * | 1993-04-30 | 1994-11-22 | Microcomputer Accessories, Inc. | Two-way adjustable copyholder |
| CN201039610Y (en) * | 2007-04-13 | 2008-03-19 | 广明光电股份有限公司 | Portable electronic product horse structure |
-
2009
- 2009-10-15 CN CN2009102357845A patent/CN102042845A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556189A (en) * | 1984-02-06 | 1985-12-03 | At&T Teletype Corporation | CRT Monitor tilt mechanism |
| US5366197A (en) * | 1993-04-30 | 1994-11-22 | Microcomputer Accessories, Inc. | Two-way adjustable copyholder |
| CN201039610Y (en) * | 2007-04-13 | 2008-03-19 | 广明光电股份有限公司 | Portable electronic product horse structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953827A (en) * | 2016-04-22 | 2016-09-21 | 西安航空制动科技有限公司 | Hinge for flip detector |
| CN105953827B (en) * | 2016-04-22 | 2018-06-01 | 西安航空制动科技有限公司 | A kind of hinge for clamshell detector |
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Application publication date: 20110504 |