CN108413212B

CN108413212B - Tripod for engineering supervision

Info

Publication number: CN108413212B
Application number: CN201810196459.1A
Authority: CN
Inventors: 吴泉
Original assignee: Zhejiang Jinsui Engineering Project Management Co ltd
Current assignee: Zhejiang Jinsui Engineering Project Management Co ltd
Priority date: 2018-03-09
Filing date: 2018-03-09
Publication date: 2020-06-30
Anticipated expiration: 2038-03-09
Also published as: CN108413212A

Abstract

The invention discloses a tripod for project supervision, which is characterized by comprising an installation platform, wherein three support legs with adjustable lengths are hinged to the lower side of the installation platform, two adjacent support legs are connected through a fixing device, the fixing device comprises a fixing block connected with the support legs, the fixing block is rotatably connected with a connecting strip through a rotating rod, one ends of the two adjacent connecting strips, which are far away from the rotating rod, commonly penetrate through a fixing bolt, the fixing bolt is in threaded connection with a fixing nut, and a hole through which the fixing bolt penetrates through the connecting strip is a connecting hole. When erecting surveying instrument, open behind the stabilizer blade and after the initial leveling, screw up fixation nut for two connecting strips are difficult to rotate around fixed bolt axial lead, and then make the position relatively fixed of two fixed blocks, thereby make the position relatively fixed of two adjacent stabilizer blades. The invention can avoid the trouble that the surveying and mapping instrument descends because the lower support slides towards the outer side during long-time measurement work, and ensure the measurement accuracy.

Description

Tripod for engineering supervision

Technical Field

The invention relates to a tripod, in particular to a tripod for engineering supervision.

Background

Surveying instruments such as total powerstation, surveyor's level often need be used to the engineering in-process of proctoring, and this surveying instrument often need place on the tripod so that people operate. Common tripod is including the mount table that is used for installing surveying instrument, and the mount table downside articulates there is three stabilizer blade. According to different terrains, the length of the three support legs is adjusted to enable the side surface on the mounting table to be basically horizontal, then the surveying and mapping instrument is mounted on the mounting table, and the support legs are adjusted to be spiral to enable the surveying and mapping instrument to be accurately leveled.

Chinese patent with publication number CN105805510B discloses a surveying instrument tripod, including the instrument fixing base, adjust seat and three supporting leg, the fixed slot has been seted up to the upper surface of instrument fixing base, instrument fixing base upper surface inlays and is equipped with the bubble type spirit level that is located fixed slot one side, instrument fixing base lower surface center fixedly connected with adjusts the pole, adjust pole lower extreme and insert in adjusting the seat with the axial, it is equipped with the couple to adjust seat lower surface center, every supporting leg upper end is all articulated with adjusting the seat through the hinge, the flexible leg of tip fixedly connected with under every supporting leg, be equipped with fine-tuning in the supporting leg, fine-tuning includes transmission case and adjusting screw, flexible chamber has been seted up along its length direction in the flexible leg, flexible intracavity sliding connection has the telescopic link, the telescopic link lower extreme is equipped with the supporting legs.

The fixing feet of the tripod are in a conical shape, so that the tripod can be conveniently clamped into soft soil, and further the tripod is fixed on the ground and is not easy to move. However, when the tripod is erected on a hard ground such as a cement ground, the fixing leg cannot be caught on the ground, and therefore the tripod can be stabilized only by the frictional force between the fixing corner toe and the ground and the damping at the hinge shaft. When the measuring time is longer, the three supporting legs easily slide outwards to cause the decline of the surveying instrument, influence the surveying and mapping precision, and need to be improved.

Disclosure of Invention

In view of the above-mentioned technical drawbacks, an object of the present invention is to provide a tripod for project supervision, which can maintain the stability of three legs on a hard ground such as a cement ground and avoid the trouble of a decrease in surveying and mapping accuracy due to a movement of a surveying and mapping instrument.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a tripod for engineering supervision, includes the mount table, the mount table downside articulates there is three adjustable length's stabilizer blade, adjacent two connect through fixing device between the stabilizer blade, fixing device includes the fixed block of being connected with the stabilizer blade, the fixed block rotates through the dwang and is connected with the connecting strip, and fixing bolt is worn to be equipped with jointly to the one end that the dwang was kept away from to two adjacent connecting strips, fixing bolt threaded connection has fixation nut, the hole that the connecting strip supplied fixing bolt to pass is the connecting hole.

Through adopting above-mentioned technical scheme, when erectting surveying instrument, open behind the stabilizer blade and after the initial leveling, twist fixing nut for fixing nut moves towards fixing bolt head, and then makes two connecting strips extrude each other, thereby makes two connecting strips be difficult to rotate around fixing bolt axial lead, consequently the position relatively fixed of two adjacent fixed blocks, makes the position relatively fixed of two adjacent stabilizer blades. Because three fixing device's setting, the relative position of three stabilizer blade all can be fixed for the stabilizer blade can't continue to rotate, thereby avoid long-time measurement work lower carriage to slide towards the outside and lead to the trouble that surveying instrument descends, guarantee measuring accuracy nature. After the support legs are folded, the fixing nuts are screwed down, so that the support legs cannot be opened and are convenient to store.

The invention is further configured to: the supporting legs comprise hinged portions hinged to the mounting table, one side, far away from the mounting table, of each hinged portion is fixedly connected with an upper sleeve, guide rods are fixedly connected to two sides of the inner portion of each upper sleeve, a lower sleeve is fixedly sleeved on one end, far away from the upper sleeve, of each guide rod, a sliding plate penetrating through the lower sleeve is arranged between the two guide rods, one side, far away from the mounting table, of each sliding plate is connected with a supporting portion, a locking screw rod penetrates through one side of the lower sleeve, a threaded hole matched with the locking screw rod in a threaded mode is formed in the guide rod, close to the locking screw rod, and one end, far away from the.

Through adopting above-mentioned technical scheme, need adjust the length of stabilizer blade and when being convenient for people operated surveying instrument, with the sliding plate towards the direction of keeping away from the mount table remove make the supporting part and the mount table between the distance increase can, adjust to twist after accomplishing and change the turning handle for locking screw extrudees the sliding plate, the sliding plate just can't continue to move. The length adjustment mode of the support legs is simple and quick.

The invention is further configured to: the cross-sectional area of the support portion gradually decreases in a direction toward the slide plate along the mounting table.

Through adopting above-mentioned technical scheme, reduce the area of contact between supporting part and the ground for the pressure increase of supporting part effect on ground, the supporting part card of being convenient for goes into stereoplasm mud soil.

The invention is further configured to: the supporting part comprises a connecting plate, one side of the connecting plate, which is far away from the sliding plate, is fixedly connected with a first hinged seat, the first hinged seat is hinged with a second hinged seat through a hinged shaft, and the second hinged seat is fixedly connected with a flat plate.

Through adopting above-mentioned technical scheme, the back is opened to the stabilizer blade, rotates the articulated seat of second around the articulated shaft until dull and stereotyped and ground complete contact, increases the area of contact between supporting part and the ground to can place the heavy object on the flat board, make the frictional force increase between ground and the supporting part, avoid the stabilizer blade to receive effort such as wind-force, the unexpected touching of people's foot and take place the trouble that removes, be applicable to the ground that sharp objects such as cement ground are difficult to the card and go into.

The invention is further configured to: the lower side of the flat plate is fixedly connected with a plurality of anti-slip strips.

Through adopting above-mentioned technical scheme, improve the coefficient of friction of dull and stereotyped downside, increase the frictional force between dull and stereotyped and the ground.

The invention is further configured to: the supporting part comprises a supporting plate, one side of the supporting plate, which is far away from the sliding plate, is fixedly connected with a first rotating seat, the first rotating seat is hinged to a second rotating seat through a rotating shaft, the second rotating seat is fixedly connected with a binding plate, and four sides of the binding plate are fixedly connected with clamping plates towards the direction far away from the sliding plate.

Through adopting above-mentioned technical scheme, surveying instrument need erect when soft soil, hug closely cardboard card income in the ground until attaching plate and earth's surface, and the stabilizer blade just is difficult to slide towards the outside, and area of contact between supporting part and the ground is great simultaneously, and the pressure that the earth's surface received is little, and surveying instrument is difficult to sink under consequently long-time work, guarantees the survey and drawing precision.

The invention is further configured to: the cross-sectional area of cardboard diminishes along the direction of sliding plate towards the supporting part gradually, the laminating board is provided with the bleeder vent.

Through adopting above-mentioned technical scheme, the cardboard card of being convenient for goes into soft soil, and the air between binding plate and the cardboard can be discharged to the bleeder vent simultaneously, avoids the too big trouble that difficult card was gone into of internal pressure.

The invention is further configured to: one side of the supporting part facing the sliding plate is fixedly connected with a connecting sleeve for the sliding plate to be clamped in, the connecting sleeve is provided with a connecting bolt in a penetrating mode, the sliding plate is provided with a through hole for the connecting bolt to penetrate through, and the connecting bolt is in threaded connection with a connecting nut.

Through adopting above-mentioned technical scheme, when needing to be changed the supporting part, unscrew coupling nut, extract connecting bolt again, the supporting part just can be taken out, and it is convenient and fixed firm to change.

The invention is further configured to: the sliding plate is characterized in that circular grooves are formed in two sides of the sliding plate, springs are fixedly connected to the bottoms of the circular grooves, clamping balls are fixedly connected to the springs, clamping grooves for the clamping balls to be clamped are formed in the guide rods, and the sliding plate is tightly attached to the hinged portion when the clamping balls are clamped into the clamping grooves.

Through adopting above-mentioned technical scheme, when the stabilizer blade needs to adjust length, unscrew locking screw, exert force with the sliding plate towards the direction of keeping away from the mount table again for the card pearl can with the draw-in groove separation, avoid unscrewing locking screw back sliding plate and gliding fast and pound the trouble of people's foot.

In conclusion, the invention has the following beneficial effects:

1. through the arrangement of the fixing device, the positions of the three support legs can be fixed when the tripod is erected, the trouble that the surveying and mapping instrument descends due to the fact that the support legs slide towards the outer side after long-time work is avoided, and the surveying and mapping precision is guaranteed;

2. through the setting of card pearl, avoid unscrewing behind the locking screw rod that the sliding plate slides down fast and pound the trouble of people's foot.

Drawings

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

FIG. 3 is a schematic view of FIG. 2 after explosion;

FIG. 4 is an exploded view of the legs after opening in the first embodiment;

FIG. 5 is a schematic view of the embodiment with the legs extended;

FIG. 6 is a schematic view of a part of the sliding plate according to the first embodiment;

FIG. 7 is a schematic structural view of the second embodiment;

FIG. 8 is an enlarged schematic view of region B of FIG. 7;

FIG. 9 is a schematic structural view of the third embodiment;

fig. 10 is an enlarged schematic view of region C in fig. 9.

Description of reference numerals: 1. an installation table; 2. a support leg; 21. a hinge portion; 22. sleeving; 23. a guide bar; 231. a threaded hole; 232. a card slot; 24. sleeving; 25. a sliding plate; 251. a through hole; 252. a circular groove; 26. a support portion; 27. locking the screw rod; 271. rotating the handle; 28. a spring; 29. clamping the beads; 3. a fixing device; 31. a fixed block; 32. rotating the rod; 33. a connecting strip; 331. connecting holes; 34. fixing the bolt; 35. fixing a nut; 41. a connecting plate; 42. a first hinge mount; 43. hinging a shaft; 44. a second hinge mount; 45. a flat plate; 451. anti-slip strips; 51. a support plate; 52. a first rotating base; 53. a rotating shaft; 54. a second rotating base; 55. attaching a plate; 551. air holes are formed; 56. clamping a plate; 6. connecting sleeves; 7. a connecting bolt; 8. and connecting a nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

the utility model provides a tripod for engineering supervision, as shown in figure 1, is including the mount table 1 that is used for fixed surveying instrument, and mount table 1 is triangle-shaped and each side in below all articulates there is stabilizer blade 2 with adjustable length.

As shown in fig. 1 and 2, two adjacent support legs 2 are connected by a fixing device 3, the fixing device 3 includes a fixing block 31 fixedly connected with the support legs 2, the fixing block 31 is fixedly connected with a rotating rod 32, and the rotating rod 32 is rotatably connected with a connecting strip 33. The ends of two adjacent connecting strips 33 far away from the rotating rod 32 are jointly penetrated with a fixing bolt 34. The connecting strips 33 can be rotated about the axis of the fixing bolt 34 so that the angle between the two connecting strips 33 can be varied, so that the foot 2 can be rotated relative to the mounting table 1.

As shown in fig. 2 and 3, a hole of the connecting bar 33 through which the fixing bolt 34 passes is a connecting hole 331, and a fixing nut 35 is screwed to a portion of the fixing bolt 34 passing through the connecting hole 331. When erecting surveying instrument, open behind the stabilizer blade 2 and after the initial leveling (as shown in fig. 4), twist fixing nut 35 for fixing nut 35 moves towards fixing bolt 34 head, and then makes two connecting strips 33 extrude each other, thereby makes two connecting strips 33 be difficult to rotate around fixing bolt 34 axial lead, and consequently the position relatively fixed of two adjacent fixed blocks 31 makes the position relatively fixed of two adjacent stabilizer blades 2. Because three fixing device 3's setting, the relative position of three stabilizer blade 2 all can be fixed for stabilizer blade 2 can't continue to rotate, thereby avoid under the long-term measurement work stabilizer blade 2 to slide towards the outside and lead to the trouble that surveying instrument descends, guarantee measuring accuracy nature. After the support legs 2 are folded, the fixing nuts 35 are screwed down, so that the support legs 2 cannot be opened and are convenient to store.

As shown in fig. 2 and 4, the supporting leg 2 includes a hinge portion 21 hinged to the mounting table 1, an upper sleeve 22 is fixedly connected to one side of the hinge portion 21 away from the mounting table 1, guide rods 23 are fixedly connected to both sides of the inner portion of the upper sleeve 22, and a fixing block 31 is fixedly connected to the middle portion of the outer side of each guide rod 23. The axial lines of the fixing bolt 34 and the rotating lever 32 are perpendicular to the plane formed by the axial lines of the two adjacent guide rods 23 for fixedly connecting the fixing block 31.

As shown in fig. 4, the ends of the two guide rods 23 away from the upper sleeve 22 are fixedly sleeved with a lower sleeve 24, a sliding plate 25 is arranged between the two guide rods 23 and penetrates through the lower sleeve 24, and the sliding plate 25 can move along the axial line of the guide rods 23, so that the support legs 2 are extended. A locking screw 27 is inserted into one side of the lower sleeve 24, and a screw hole 231 which is in threaded engagement with the locking screw 27 is provided in the guide rod 23 adjacent to the locking screw 27. After the adjustment is completed, the slide plate 25 is difficult to move further by screwing the lock screw 27 into the screw hole 231 until the slide plate 25 is pressed. The length adjustment mode of the support leg 2 is simple and quick. A rotating handle 271 is fixedly connected to one end of the locking screw 27 away from the sliding plate 25, so as to rotate the locking screw 27. A support portion 26 for contacting the ground is connected to a side of the sliding plate 25 away from the mounting table 1, and the support portion 26 has a triangular pyramid shape with a cross-sectional area gradually decreasing in a direction toward the sliding plate 25 along the mounting table 1. The contact area between the supporting part 26 and the ground is small, so that the pressure on the ground surface is increased, and the supporting part 26 can be conveniently clamped into the hard muddy ground. A connecting sleeve 6 for the sliding plate 25 to be clamped is fixedly connected to one side of the supporting portion 26 facing the sliding plate 25, a connecting bolt 7 penetrates through the connecting sleeve 6, a through hole 251 for the connecting bolt 7 to pass through is formed in the sliding plate 25, and a connecting nut 8 is connected to a part of the connecting bolt 7 after passing through the through hole 251 in a threaded manner. When the supporting part 26 needs to be replaced, the connecting nut 8 is unscrewed, the connecting bolt 7 is pulled out, the supporting part 26 can be taken out, the replacement is convenient, and the fixation is firm.

As shown in fig. 5 and 6, after the locking screw 27 is loosened, the sliding plate 25 slides down rapidly under its own weight, so that the trouble that the support portion 26 hits the foot of a person often occurs. To avoid this, the sliding plate 25 is provided with circular grooves 252 on both sides, the bottom of the circular groove 252 is fixedly connected with the spring 28, and the end of the spring 28 far away from the bottom of the circular groove 252 is fixedly connected with the clamping ball 29. The ball 29 includes a cylindrical portion that is caught in the circular groove 252 and a hemispherical portion that exposes the circular groove 252. The guide rod 23 is provided with a clamping groove 232 for clamping the clamping bead 29, and the sliding plate 25 is tightly attached to the hinge part 21 when the clamping bead 29 is clamped in the clamping groove 232. Therefore, after the locking screw 27 is unscrewed, the clamping bead 29 is limited by the clamping groove 232, so that the sliding plate 25 cannot automatically slide downwards, people need to apply acting force to the sliding plate 25 in the direction away from the mounting table 1, the clamping bead 29 is pressed to retract into the circular groove 252, the sliding plate 25 can move along the axial line of the guide rod 23, time for people to prepare is provided, and the trouble that the supporting part 26 smashes feet is avoided.

The working process is as follows:

when the surveying instrument is installed, the locking screw 27 is firstly unscrewed, then the sliding plate 25 is acted in the direction away from the installation table 1, then the sliding plate 25 is moved until the length of the support leg 2 is adjusted to the optimum state, and the locking screw 27 is screwed down. Then unscrew fixation nut 35, rotate three stabilizer blade 2 again until mount table 1 mesa is level basically, screw up fixation nut 35 after the rotation is accomplished, at last directly install surveying instrument on mount table 1 can.

When the support portion 26 needs to be replaced, the coupling nut 8 is unscrewed, the coupling bolt 7 is pulled out, and then the support portion 26 is removed.

Example two:

as shown in fig. 7 and 8, the supporting portion 26 includes a connecting plate 41 for fixedly connecting with the connecting sleeve 6, which is different from the first embodiment. One side of the connecting plate 41 far away from the sliding plate 25 is fixedly connected with a first hinge seat 42, the first hinge seat 42 is hinged with a second hinge seat 44 through a hinge shaft 43, and the second hinge seat 44 is fixedly connected with a flat plate 45. The axis of the hinge shaft 43 is parallel to the rotation axis 53 between the leg 2 and the mounting table 1, so that the second hinge base 44 rotates about the hinge shaft 43 to make the rear plate 45 completely contact with the ground when the leg 2 is opened. The contact area between the supporting part 26 and the ground is large, and the flat plate 45 can be used for placing heavy objects, so that the friction force between the ground and the supporting part 26 is increased, the trouble that the support legs 2 are moved due to the action force of wind force, accidental touch of human feet and the like is avoided, and the novel support is suitable for the ground in which sharp objects such as cement lands and the like are not easy to block. The lower side of the flat plate 45 is fixedly connected with a plurality of anti-slip strips 451, so that the friction coefficient of the lower side of the flat plate 45 is improved, and the friction force between the flat plate 45 and the ground is increased.

Example three:

as shown in fig. 9 and 10, unlike the first embodiment, the supporting portion 26 includes a supporting plate 51 for fixedly connecting with the connecting sleeve 6, and a first rotating base 52 is fixedly connected to a side of the supporting plate 51 away from the sliding plate 25. The first rotating seat 52 is hinged with a second rotating seat 54 through a rotating shaft 53, the second rotating seat 54 is fixedly connected with an attaching plate 55, and four sides of the attaching plate 55 are fixedly connected with clamping plates 56 towards the direction far away from the sliding plate 25. The axis of the rotating shaft 53 is parallel to the rotating shaft 53 between the stand bar 2 and the installation table 1, so that when the stand bar 2 is opened, the second rotating base 54 rotates around the rotating shaft 53 and the rear attachment plate 55 can be parallel to the ground surface. Surveying instrument need erect when soft soil, hug closely cardboard 56 card income in the ground until binding plate 55 and earth's surface, and stabilizer blade 2 just is difficult to slide towards the outside, and the area of contact between supporting part 26 and the ground is great simultaneously, and the pressure that the earth's surface received is little, and surveying instrument is difficult to sink under consequently long-time work, guarantees the survey and drawing precision. The cross-sectional area of the catch plate 56 tapers in the direction of the slide plate 25 towards the support portion 26 so that the contact area of the catch plate 56 with the ground is reduced, facilitating the catch plate 56 to be stuck into soft ground. The attachment plate 55 is provided with a vent 551, and the vent 551 can exhaust air between the attachment plate 55 and the clamping plate 56, thereby avoiding the trouble that the internal pressure is too high and the clamping is difficult.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a tripod for engineering supervision, includes mount table (1), mount table (1) downside articulates there is stabilizer blade (2) that three length-adjustable, its characterized in that: adjacent two connect through fixing device (3) between stabilizer blade (2), fixing device (3) include fixed block (31) be connected with stabilizer blade (2), fixed block (31) are rotated through dwang (32) and are connected with connecting strip (33), and fixing bolt (34) are worn to be equipped with jointly to the one end that dwang (32) were kept away from in two adjacent connecting strip (33), fixing bolt (34) threaded connection has fixation nut (35), the hole that connecting strip (33) supplied fixing bolt (34) to pass is connecting hole (331), stabilizer blade (2) include articulated portion (21) with mount table (1) articulated, one side fixedly connected with upper cover (22) of mount table (1) are kept away from to articulated portion (21), the equal fixedly connected with guide bar (23) in upper cover (22) inside both sides, two the common fixed cover has lower cover (24) of having been fixed the cover together to the one end that upper cover (22) was kept away from in guide bar (23), a sliding plate (25) penetrating through a lower sleeve (24) is arranged between the two guide rods (23), one side of the sliding plate (25) far away from the installation platform (1) is connected with a supporting part (26), one side of the lower sleeve (24) is provided with a locking screw (27) in a penetrating manner, the guide rod (23) close to the locking screw (27) is provided with a threaded hole (231) in threaded fit with the locking screw (27), one end of the locking screw (27) far away from the sliding plate (25) is fixedly connected with a rotating handle (271), the supporting part (26) comprises a supporting plate (51), one side of the supporting plate (51) far away from the sliding plate (25) is fixedly connected with a first rotating seat (52), the first rotating seat (52) is hinged with a second rotating seat (54) through a rotating shaft (53), the second rotating seat (54) is fixedly connected with a binding plate (55), and clamping plates (56) are fixedly connected on four sides of the binding plate (55) towards the, the sliding plate is characterized in that circular grooves (252) are formed in two sides of the sliding plate (25), springs (28) are fixedly connected to the bottoms of the circular grooves (252), clamping balls (29) are fixedly connected to the springs (28), clamping grooves (232) for the clamping balls (29) to be clamped in are formed in the guide rods (23), and the sliding plate (25) is tightly attached to the hinged portions (21) when the clamping balls (29) are clamped in the clamping grooves (232).

2. A tripod for supervision of engineering as claimed in claim 1, wherein: the cross-sectional area of the clamping plate (56) gradually decreases along the direction of the sliding plate (25) towards the supporting part (26), and the binding plate (55) is provided with air holes (551).

3. A tripod for supervision of engineering as claimed in claim 1, wherein: one side of the support part (26) facing the sliding plate (25) is fixedly connected with a connecting sleeve (6) for the sliding plate (25) to be clamped in, the connecting sleeve (6) is provided with a connecting bolt (7) in a penetrating manner, the sliding plate (25) is provided with a through hole (251) for the connecting bolt (7) to pass through, and the connecting bolt (7) is in threaded connection with a connecting nut (8).