CN2362101Y

CN2362101Y - Tripod with alignment plumb

Info

Publication number: CN2362101Y
Application number: CN 99237016
Authority: CN
Inventors: 林宣泽; 张宗发
Original assignee: FUDING CITY MAPPING APPARATUS FACTORY FUJIAN PROV
Current assignee: FUDING CITY MAPPING APPARATUS FACTORY FUJIAN PROV
Priority date: 1999-01-04
Filing date: 1999-01-04
Publication date: 2000-02-02
Anticipated expiration: 2009-01-04

Abstract

The utility model relates to a tripod with an aiming plumb bob, which provides an improvement of a tripod used for field surveying and mapping. The utility model is composed of a bracket plate and legs of an expansion bracket, wherein, the lower part of a central bolt arranged on the bracket plate is screwed with a center-fixing guide pole; a hanging line penetrates through a hanging line ring arranged in the center-fixing guide pole and is hung on the center-fixing guide pole; the lower end of the hanging line is connected with the plumb bob, and thereby, the position that the plumb bob points is the accurate position of a measuring point in the measuring process because the plumb bob is positioned at the right lower part of a measuring instrument. The tripod with the aiming plumb bob provided by the utility model has the advantages of simple structure and convenient operation, and overcomes the defect of inaccurate fixing points of the existing tripod in the measuring process, and furthermore, the utility model enables surveying and mapping staff to precisely and accurately obtain surveying and mapping data of a certain point.

Description

Have the tripod of aiming at plumb bob

The utility model belongs to a kind of surveying and mapping tool, the improvement of the tripod that particularly a kind of open-air engineering survey is used.

Existing build the road, field such as exploration, bridge construction generally are installed in surveying instrument on the tripod when surveying and drawing operation and finish.And existing tripod generally only plays a supportive role, and mapping worker can only judge whether the instrument position is on the measurement point, and this range estimation is often very inaccurate by range estimation.The error of its generation is negligible in the ordinary course of things.But when needs were accurately measured, its precision was just not much of that, needs a kind of alignment device.

The purpose of this utility model provides a kind of tripod of aiming at plumb bob that has, and it is installed in a plumb bob under the frame dish of tripod by vertical line, the location of realizing surveying instrument by plumb bob.

The technical solution of the utility model is: a kind of tripod of aiming at plumb bob that has, form by frame dish and expansion bracket leg, be connected with under the centre bolt on described dish one fixed in guide pillar, be set with a vertical line ring in the fixed middle guide pillar, vertical line passes this vertical line ring and is hung on the middle surely guide pillar, and the lower end of vertical line is connected with a plumb bob.Like this and since plumb bob be in surveying instrument under, in measuring process, the position of plumb bob indication is exactly the exact position of measurement point.

Provided by the utility model to have the tripod structure of aiming at plumb bob simple, easy to operate, and it has overcome the not accurate enough shortcoming of fixed point when utilizing tripod to measure now in the open air, makes the mapping worker precision measure certain any surveying and mapping data exactly.

Fig. 1 is the structural representation that originally has the tripod of aiming at plumb bob.

Fig. 2 originally has the tripod vertical line of aiming at plumb bob and the structural representation of plumb bob.

Describe structure of the present utility model in detail below in conjunction with accompanying drawing.

As shown in the figure, the tripod of forming by frame dish 1 and expansion bracket leg 2, centre bolts of its dish 1 central authorities be connected with for 7 times one fixed in guide pillar 3.Be set with a vertical line ring 9 in the fixed middle guide pillar 3.Vertical line 4 passes this vertical line ring 9 and is hung on the middle surely guide pillar 3.The lower end of vertical line 4 is connected with a plumb bob 6.A vertical line adjustment disk 5 is housed on the vertical line, length that can telescopic adjustment vertical line 4, thus make plumb bob 6 be in suitable height, use with convenient.

Behind the good tripod of frame, guide pillar screws in centre bolt in will deciding during use, can use by the height of adjusting vertical line adjustment disk adjustment plumb bob.After measurement was finished, guide pillar in screwing off surely got final product together with plumb bob and the vertical line plumb bob box of being located on the frame leg 8 of packing into.

Claims

1. one kind has the tripod of aiming at plumb bob, form by frame dish and expansion bracket leg, it is characterized in that being connected with under the centre bolt on described dish one fixed in guide pillar, be set with a vertical line ring in the fixed middle guide pillar, vertical line passes this vertical line ring and is hung on the middle surely guide pillar, and the following disconnection of vertical line is connected to a plumb bob.

2. the tripod of aiming at plumb bob that has according to claim 1 is characterized in that being equipped with a vertical line adjustment disk on described vertical line, length that can the telescopic adjustment vertical line.