CN114987091A

CN114987091A - Geological survey is with supplementary drawing device

Info

Publication number: CN114987091A
Application number: CN202210797340.6A
Authority: CN
Inventors: 孟艳慧; 聂林强; 赵梦
Original assignee: Shangdong Provincirl Bureru Of Corl Geology
Current assignee: Shangdong Provincirl Bureru Of Corl Geology
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-09-02
Anticipated expiration: 2042-07-08
Also published as: CN114987091B

Abstract

The invention relates to the technical field of geological survey equipment and discloses an auxiliary drawing device for geological survey, which comprises a drawing board and drawing paper, wherein the drawing board is provided with a first latitude scale mark and a first longitude scale mark, and the drawing board is symmetrically provided with two supporting seats; a first sliding seat is arranged on the two supporting seats in a sliding manner, a second sliding seat is arranged on the first sliding seat in a sliding manner, a positioning pin is connected to the second sliding seat through a connecting mechanism, and a latitude measuring mechanism and a longitude measuring mechanism are arranged on the second sliding seat; the latitude measuring mechanism comprises two first belt pulleys rotatably arranged on the second sliding seat, first belts are arranged on the two first belt pulleys, and second latitude scale marks are arranged on the first belts; this geological survey is with supplementary drawing device can conveniently directly read the longitude and latitude coordinate of setpoint through two belts that are carved with the longitude and latitude marking when removing the pilot pin to greatly make things convenient for the drawing, also improved the precision of drawing.

Description

Geological survey is with supplementary drawing device

Technical Field

The invention relates to the technical field of geological survey equipment, in particular to an auxiliary drawing device for geological survey.

Background

Geological survey refers to a survey based on observation and research, which is generally conducted on geological phenomena (rocks, strata, structures, minerals, hydrogeology, landforms, etc.) and under the guidance of geology and related sciences. Geological survey generally takes map filling with different scales as a main means. The countries have clear requirements on the map filling precision of different scales, so the map filling precision of different scales represents the detail degree of the geological survey. The basic task is to find out various important regional geologic phenomena in land and sea area by adopting various modern means and comprehensive methods, study the occurrence, development and rules of the phenomena, and compile a series of basic geologic maps and data on the basis. Personnel conducting geological surveys in the field will be drawing at any time to record the geological features of the surveyed landscape. The drawing tools used are typically simple drawing boards, drawing papers and brushes. The method for measuring the scale formed by the longitude and latitude required by drawing usually comprises the steps of carrying out graduation marks of the longitude and latitude scale on drawing paper or carving the scale on a drawing board, but in any case, the detailed drawing point line needs to be determined by human eyes or by the aid of a ruler.

Chinese utility model patent CN202122976295.4 discloses an auxiliary drawing device for geological survey. The drawing frame comprises an underframe and an upper frame, wherein the upper frame is arranged above the underframe, two groups of upright rods are connected in parallel between the underframe and the upper frame, one side of the underframe is hinged with a drawing frame, a scroll is arranged in the middle of the upper frame, and two groups of upright rods are connected with two groups of vertically arranged binding belts on the side far away from the drawing frame; the drawing frame is rectangle square frame structure, and this drawing frame middle part is fixed with the backing plate, the drawing frame top is close to parallel arrangement has two to connect around roof-rack one side the stay cord of spool, drawing frame top central authorities are fixed with magnetism and inhale the connection the magnetic stripe of roof-rack. However, the drawing method of the above device is not only time-consuming and requires a geological investigator to repeatedly confirm the longitude and latitude coordinates with naked eyes, but also has a high error rate, resulting in a decrease in drawing accuracy.

In view of the above, the present invention provides an auxiliary drawing device for geological survey to solve at least one problem in the prior art.

Disclosure of Invention

The invention provides an auxiliary drawing device for geological survey, which has the advantages that longitude and latitude coordinates of positioning points can be conveniently and directly read through two belts with the longitude and latitude marked lines when a positioning needle is moved, so that drawing is greatly facilitated, and the drawing precision is also improved.

The invention provides the following technical scheme: an auxiliary drawing device for geological survey comprises a drawing board and drawing paper, wherein the drawing board is provided with a first latitude scale mark and a first longitude scale mark, and the drawing board is symmetrically provided with two supporting seats;

a first sliding seat is arranged on the two supporting seats in a sliding manner, a second sliding seat is arranged on the first sliding seat in a sliding manner, a positioning pin is connected to the second sliding seat through a connecting mechanism, and a latitude measuring mechanism and a longitude measuring mechanism are arranged on the second sliding seat;

the latitude measuring mechanism comprises two first belt pulleys rotatably arranged on the second sliding seat, first belts are arranged on the two first belt pulleys, and second latitude scale marks are arranged on the first belts;

the longitude measuring mechanism comprises two second belt wheels which are rotatably arranged on the second sliding seat, a second belt is arranged on the second belt wheels, and second longitude scale lines are arranged on the second belt.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: the latitude measuring mechanism further comprises two first rotating rods which are rotatably arranged on one of the supporting seats, wherein one of the first rotating rods is connected with one of the first belt pulleys;

and a second gear is arranged on the other first rotating rod, a first rack is arranged on one of the supporting seats, and the first rack is meshed with the second gear.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: the latitude measuring mechanism further comprises two first gears which are arranged on the two first rotating rods respectively, and toothed belts are arranged on the two first gears.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: latitude measuring mechanism still including set up in one of them first telescopic joint on the first belt pulley, it is provided with the second telescopic joint to slide in the first telescopic joint, one of them be provided with the third telescopic joint on the first bull stick, just the third telescopic joint slide set up in the second telescopic joint.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: the longitude measuring mechanism further comprises a second rotating rod which is rotatably arranged on the second sliding seat, a third gear is arranged on the second rotating rod, a second rack is arranged on the first sliding seat, and the second rack is meshed with the third gear.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: the longitude measuring mechanism further comprises bevel gears which are respectively arranged on the second rotating rod and one of the second pulleys, and the two bevel gears are meshed.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: the connecting mechanism comprises a fixed rod arranged on the second sliding seat, a sliding rod is arranged on the fixed rod in a sliding mode, a spring is arranged on the sliding rod and connected with the fixed rod, a clamping groove is formed in the sliding rod, and the positioning needle is movably inserted into the clamping groove.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: two first limiting blocks are symmetrically arranged on the first sliding seat, first limiting grooves are formed in the two supporting seats, and the two first limiting blocks are arranged in the two first limiting grooves in a sliding mode respectively;

two second limiting blocks are symmetrically arranged on the second sliding seat, two second limiting grooves are symmetrically formed in the first sliding seat, and the two second limiting blocks are respectively arranged in the two second limiting grooves in a sliding mode.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: the drawing board is connected with a plurality of magnets in a magnetic mode, and the drawing paper is connected with the drawing board through the magnets.

As an alternative of the auxiliary drawing device for geological survey of the present invention, wherein: two braces are symmetrically arranged on the drawing board.

The invention has the following beneficial effects:

1. the auxiliary drawing device for geological survey is different from the traditional drawing device in that the coordinate point needs to be confirmed repeatedly by eyes or a ruler during drawing. The device firstly carries out positioning through the positioning pin, and in the process of moving the positioning pin back and forth and left and right, the second latitude scale mark and the second longitude scale mark can automatically rotate along with the positioning pin, so that the longitude and latitude coordinates of the point are rotated to the right upper side, and the coordinate point can be directly read. Greatly facilitates the drawing process of geological survey and improves the drawing precision.

2. When the positioning needle is driven to move back and forth, the first sliding seat is driven to displace, the second gear rolls along the first rack at the moment, and the first belt is finally driven to rotate through a series of transmissions, so that the scales on the second latitude scale line rotate, and the latitude coordinate of the point is directly displayed. And when the positioning pin moves left and right to drive the second sliding seat to move left and right, the third gear rolls along the second rack and finally drives the second belt to rotate through transmission, so that the longitude coordinate of the point is directly displayed by the scales on the second longitude scale mark. And in the moving process of the positioning needle, namely, the front and back movement, the left and right movement, or the left and right movement, the two groups of transmission mechanisms cannot be influenced by each other due to the arrangement of the multi-section expansion joints.

3. This geological survey is with supplementary drawing device, when carrying this device, the accessible two braces back of the body, when drawing, place the drawing board in front of the body again and support, overlaps two braces on the shoulder. And then the drawing paper is fixed on the drawing board through four magnet magnets for drawing conveniently. When in positioning, the positioning pin can be pulled downwards to dot on the drawing paper. The positioning pin can be replaced by a painting brush which is matched with the clamping groove in the same way.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the overall explosion structure of the present invention.

Fig. 3 is a schematic view of a partial explosion structure of the present invention.

Fig. 4 is a first internal structural diagram of the present invention.

Fig. 5 is a partial enlarged view of the invention at a in fig. 4.

Fig. 6 is a second internal structural diagram of the present invention.

In the figure: 1. a drawing board; 101. a first latitude scale line; 102. a first longitude scale line; 103. a supporting seat; 104. a magnet; 105. a harness; 2. drawing paper; 3. a first sliding seat; 301. a second sliding seat; 302. a first stopper; 303. a first limit groove; 304. a second limiting block; 305. a second limit groove; 4. a connecting mechanism; 401. fixing the rod; 402. a slide bar; 403. a spring; 404. a card slot; 5. a positioning pin; 6. a latitude measuring mechanism; 601. a first pulley; 602. a first belt; 603. a second latitude scale line; 604. a first rotating lever; 605. a first gear; 606. a toothed belt; 607. a second gear; 608. a first rack; 609. a first expansion joint; 610. a second expansion joint; 611. a third telescopic joint; 7. a longitude measuring mechanism; 701. a second pulley; 702. a second belt; 703. a second longitude tick mark; 704. a second rotating rod; 705. a bevel gear; 706. a third gear; 707. a second rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The drawing paper 2 is placed on the drawing board 1 for drawing, can be positioned to different coordinate points through the transverse and longitudinal movement of the positioning pin 5 during drawing, and provides an embodiment 1 in order to directly read longitude and latitude coordinates of the point after the positioning pin 5 is positioned without auxiliary measurement and confirmation by naked eyes or a ruler;

referring to fig. 1-6, the drawing board includes a drawing board 1 and a drawing sheet 2, the drawing board 1 is provided with a first latitude scale mark 101 and a first longitude scale mark 102, and the drawing board 1 is symmetrically provided with two support bases 103;

a first sliding seat 3 is arranged on the two supporting seats 103 in a sliding manner, a second sliding seat 301 is arranged on the first sliding seat 3 in a sliding manner, a positioning needle 5 is connected to the second sliding seat 301 through a connecting mechanism 4, and a latitude measuring mechanism 6 and a longitude measuring mechanism 7 are arranged on the second sliding seat 301;

the latitude measuring mechanism 6 comprises two first belt pulleys 601 rotatably arranged on the second sliding seat 301, a first belt 602 is arranged on the two first belt pulleys 601, and second latitude scale marks 603 are arranged on the first belt 602;

the longitude measuring mechanism 7 includes two second pulleys 701 rotatably disposed on the second sliding seat 301, a second belt 702 is disposed on the two second pulleys 701, and a second longitude scale 703 is disposed on the second belt 702.

The drawing board 1 is provided with a first latitude scale mark 101 and a first longitude scale mark 102, and the first latitude scale mark and the first longitude scale mark can be used for reading coordinate points as in a conventional drawing board. Two support bases 103 are fixed on the drawing board 1 in a left-right symmetrical manner, the first sliding base 3 slides back and forth along the two support bases 103, and the second sliding base 301 slides left and right along the first sliding base 3.

The positioning pin 5 is connected to the lower end of the second sliding seat 301 through the connecting mechanism 4, the first sliding seat 3 is driven to move back and forth through the positioning pin 5, and then the second sliding seat 301 is driven to move left and right, so that the drawing paper can be moved to any coordinate point on the drawing paper 2.

Two ends of two first belt pulleys 601 are respectively rotatably installed on the inner wall of the second sliding seat 301, the two first belt pulleys 601 are arranged in a vertical straight line, the two first belt pulleys 601 realize transmission through a first belt 602, a second latitude scale mark 603 is arranged on the first belt 602, the second latitude scale mark 603 corresponds to the first latitude scale mark 101, when the positioning needle 5 moves back and forth, the two first belt pulleys 601 can automatically rotate to drive the second latitude scale mark 603 to rotate, so that the reading of the second latitude scale mark 603 exposed out of the second sliding seat 301 is directly displayed as the latitude coordinate of the point.

Similarly, when the positioning pin 5 moves left and right, the two second pulleys 701 will automatically rotate, so that the second longitude graduation line 703 directly moves the longitude coordinate of the point to the upper side for reading.

Example 2

In order to enable the two first belt pulleys 601 to synchronously rotate along with the first sliding seat 3 integrally moves forwards and backwards, embodiment 2 is provided;

in this embodiment, an improvement is made on the basis of embodiment 1, and specifically, referring to fig. 1 to 5, the latitude measuring mechanism 6 further includes two first rotating rods 604 rotatably disposed on one of the supporting bases 103, wherein one of the first rotating rods 604 is connected to one of the first belt pulleys 601;

a second gear 607 is arranged on the other first rotating rod 604, a first rack 608 is arranged on one of the supporting seats 103, and the first rack 608 is meshed with the second gear 607;

the latitude measuring mechanism 6 further comprises two first gears 605 respectively arranged on the two first rotating rods 604, and toothed belts 606 are arranged on the two first gears 605;

the latitude measuring mechanism 6 further includes a first telescopic joint 609 disposed on one of the first belt pulleys 601, a second telescopic joint 610 is slidably disposed in the first telescopic joint 609, a third telescopic joint 611 is disposed on one of the first rotating rods 604, and the third telescopic joint 611 is slidably disposed in the second telescopic joint 610.

Two ends of the two first rotating rods 604 are respectively rotatably mounted on the inner wall of the first sliding seat 3, first gears 605 are fixed on the two first rotating rods 604, the two first gears 605 are engaged with a toothed belt 606, transmission is realized through the toothed belt 606, a second gear 607 is fixed on the first rotating rod 604 positioned at the lower side, and a first rack 608 is fixed on the inner wall of the supporting seat 103 positioned at the left side.

A third telescopic joint 611 is fixed at the right end of the first rotating rod 604 at the upper side, the third telescopic joint 611 is solid, a first telescopic joint 609 is fixed at the left end of the first belt pulley 601 at the lower side, a second telescopic joint 610 is slidably mounted at the opening at the left end of the first telescopic joint 609, and the third telescopic joint 611 is slidably mounted at the opening at the left end of the second telescopic joint 610. And the first telescopic joint 609, the second telescopic joint 610 and the third telescopic joint 611 are all rectangular, so that the telescopic function is achieved, and the rotation can be transmitted.

The second gear 607 meshes with the first rack 608 in the front-rear vertical direction. When the first sliding seat 3 moves back and forth, the second gear 607 is driven to move back and forth, and at this time, the engagement of the first rack 608 causes the second gear 607 to rotate, which in turn drives the first rotating rod 604 located at the lower side to rotate, and then the first rotating rod 604 located at the upper side is also rotated by the transmission of the first gear 605.

Then, the first belt pulley 601 located at the lower side is rotated by the transmission of the third telescopic joint 611, the second telescopic joint 610 and the first telescopic joint 609, so that the first belt 602 and the second latitude scale mark 603 are rotated to display corresponding scales.

Example 3

In order to enable the two second belt pulleys 701 to synchronously rotate along with the second sliding seat 301 when the whole second sliding seat is moved leftwards and rightwards, embodiment 3 is provided;

the present embodiment is an improved description based on embodiment 1, and specifically, referring to fig. 1 to 4, the longitude measuring mechanism 7 further includes a second rotating rod 704 rotatably disposed on the second sliding seat 301, the second rotating rod 704 is provided with a third gear 706, the first sliding seat 3 is provided with a second rack 707, and the second rack 707 is engaged with the third gear 706;

the longitude measuring mechanism 7 further includes bevel gears 705 provided on the second rotating shaft 704 and one of the second pulleys 701, respectively, and the two bevel gears 705 mesh with each other.

A second rotating rod 704 is rotatably mounted on the second sliding seat 301, a third gear 706 is fixed on the second rotating rod 704, a second rack 707 is fixed on the inner wall of the first sliding seat 3, the third gear 706 and the second rack 707 are engaged in the horizontal left-right direction, a bevel gear 705 is fixed on the surfaces of the second rotating rod 704 and the second pulley 701 positioned on the lower side, and the two bevel gears 705 are engaged to change the transmission direction.

When the second sliding seat 301 moves left and right, the third gear 706 moves left and right, and at this time, the third gear 706 and the second rotating rod 704 are rotated by the engagement of the second rack 707, and further the second belt pulley 701 located at the lower side is also rotated by the transmission of the two bevel gears 705, so that the second belt 702 and the second longitude scale mark 703 rotate to display corresponding scales.

Example 4

To mount the positioning pin 5 on the second slider base 301, embodiment 4 is proposed;

the present embodiment is an improved description based on embodiment 1, and specifically, referring to fig. 1 to fig. 4, the connection mechanism 4 includes a fixed rod 401 disposed on the second sliding seat 301, a sliding rod 402 is slidably disposed on the fixed rod 401, a spring 403 is disposed on the sliding rod 402, the spring 403 is connected to the fixed rod 401, a slot 404 is disposed on the sliding rod 402, and the positioning pin 5 is movably inserted into the slot 404.

A fixing rod 401 is fixed at the lower end of the second sliding seat 301, a sliding rod 402 is slidably mounted at an opening at the lower end of the fixing rod 401, and two ends of a spring 403 are respectively fixed at the lower end of the fixing rod 401 and the upper end of the sliding rod 402. The positioning pin 5 is movably inserted into a clamping groove 404 formed at the lower end of the sliding rod 402.

When the positioning pin 5 is moved, the spring 403 pulls the positioning pin 5 to the upper side of the drawing paper 2, and when it is necessary to perform dotting on the drawing paper 2, the positioning pin 5 is pulled downward to perform dotting on the drawing paper 2.

And the stylus 5 is detachably attached, it is also possible to attach a pen for drawing on the slide bar 402.

Example 5

To make the sliding of the first sliding seat 3 and the second sliding seat 301 more smooth, embodiment 5 is proposed;

in this embodiment, an improvement is made on the basis of embodiment 1, specifically, referring to fig. 1 to 6, two first limiting blocks 302 are symmetrically arranged on the first sliding seat 3, first limiting grooves 303 are formed on the two supporting seats 103, and the two first limiting blocks 302 are respectively slidably arranged in the two first limiting grooves 303;

two second limiting blocks 304 are symmetrically arranged on the second sliding seat 301, two second limiting grooves 305 are symmetrically arranged on the first sliding seat 3, and the two second limiting blocks 304 are respectively slidably arranged in the two second limiting grooves 305.

The first sliding seat 3 can be limited by the two first limiting blocks 302 fixed on the first sliding seat 3 sliding back and forth along the two first limiting grooves 303, so that the sliding is more stable.

The second sliding seat 301 can be limited by the two second limiting blocks 304 fixed on the second sliding seat 301 sliding left and right along the two second limiting grooves 305, so that the sliding is more stable

Example 6

In order to facilitate the fixing of the drawing paper 2 on the drawing board 1 for drawing and the convenience of carrying and fixing the whole device during drawing, embodiment 6 is provided;

this embodiment is an improved description based on embodiment 1, and specifically, referring to fig. 1 to 6, drawing board 1 is magnetically connected with a plurality of magnets 104, and drawing paper 2 is connected with drawing board 1 through a plurality of magnets 104;

two straps 105 are symmetrically arranged on the drawing board 1.

Wherein, drawing board 1 is the magnetism material, places drawing paper 2 back on drawing board 1, can fix drawing board 1 through four magnet 104 and make things convenient for the drawing.

The two braces 105 arranged at the lower end of the drawing board 1 can be carried on the back when carrying the device, and when drawing, the drawing board 1 can be supported in front of the body, and the two braces 105 are sleeved on the shoulders, so that the drawing board 1 can be fixed conveniently when drawing.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a geological survey is with supplementary drawing device which characterized in that: the drawing board comprises a drawing board (1) and drawing paper (2), wherein a first latitude scale mark (101) and a first longitude scale mark (102) are formed in the drawing board (1), and two supporting seats (103) are symmetrically arranged on the drawing board (1);

a first sliding seat (3) is arranged on the two supporting seats (103) in a sliding manner, a second sliding seat (301) is arranged on the first sliding seat (3) in a sliding manner, a positioning needle (5) is connected to the second sliding seat (301) through a connecting mechanism (4), and a latitude measuring mechanism (6) and a longitude measuring mechanism (7) are arranged on the second sliding seat (301);

the latitude measuring mechanism (6) comprises two first belt pulleys (601) rotatably arranged on the second sliding seat (301), a first belt (602) is arranged on the two first belt pulleys (601), and second latitude scale marks (603) are arranged on the first belt (602);

longitude measurement mechanism (7) including rotate set up in two second pulleys (701) on second sliding seat (301), two be provided with second belt (702) on second pulley (701), second longitude scale mark (703) have been seted up on second belt (702).

2. The auxiliary drawing device for geological survey according to claim 1, characterized in that: the latitude measuring mechanism (6) further comprises two first rotating rods (604) rotatably arranged on one of the supporting seats (103), wherein one of the first rotating rods (604) is connected with one of the first belt pulleys (601);

a second gear (607) is arranged on the other first rotating rod (604), a first rack (608) is arranged on one of the supporting seats (103), and the first rack (608) is meshed with the second gear (607).

3. An auxiliary drawing device for geological survey according to claim 1 or 2, characterized in that: the latitude measuring mechanism (6) further comprises two first gears (605) respectively arranged on the two first rotating rods (604), and toothed belts (606) are arranged on the two first gears (605).

4. An auxiliary drawing device for geological survey according to any one of claims 1 to 3, characterized in that: the latitude measuring mechanism (6) further comprises a first telescopic joint (609) arranged on one of the first belt pulleys (601), a second telescopic joint (610) is arranged in the first telescopic joint (609) in a sliding mode, a third telescopic joint (611) is arranged on one of the first rotating rods (604), and the third telescopic joint (611) is arranged in the second telescopic joint (610) in a sliding mode.

5. An auxiliary drawing device for geological survey according to any one of claims 1 to 4, wherein: the longitude measuring mechanism (7) further comprises a second rotating rod (704) rotatably arranged on the second sliding seat (301), a third gear (706) is arranged on the second rotating rod (704), a second rack (707) is arranged on the first sliding seat (3), and the second rack (707) is meshed with the third gear (706).

6. An auxiliary drawing device for geological survey according to any one of claims 1 to 5, characterized in that: the longitude measuring mechanism (7) further comprises bevel gears (705) respectively arranged on the second rotating rod (704) and one of the second pulleys (701), and the two bevel gears (705) are meshed.

7. The auxiliary drawing device for geological survey according to claim 1, characterized in that: the connecting mechanism (4) comprises a fixing rod (401) arranged on the second sliding seat (301), a sliding rod (402) is arranged on the fixing rod (401) in a sliding mode, a spring (403) is arranged on the sliding rod (402), the spring (403) is connected with the fixing rod (401), a clamping groove (404) is formed in the sliding rod (402), and the positioning needle (5) is movably inserted into the clamping groove (404).

8. The auxiliary drawing device for geological survey according to claim 1, characterized in that: two first limiting blocks (302) are symmetrically arranged on the first sliding seat (3), first limiting grooves (303) are formed in the two supporting seats (103), and the two first limiting blocks (302) are respectively arranged in the two first limiting grooves (303) in a sliding manner;

two second limiting blocks (301) are symmetrically arranged on the second sliding seat (303), two second limiting grooves (305) are symmetrically arranged on the first sliding seat (3), and the two second limiting blocks (304) are respectively arranged in the two second limiting grooves (305) in a sliding manner.

9. The auxiliary drawing device for geological survey according to claim 1, characterized in that: magnetism is connected with a plurality of magnet (104) on drawing board (1), drawing paper (2) are through a plurality of magnet (104) with drawing board (1) are connected.

10. The auxiliary drawing device for geological survey according to claim 1, characterized in that: two braces (105) are symmetrically arranged on the drawing board (1).