CN221196878U

CN221196878U - Warp and weft measuring instrument for engineering survey and drawing

Info

Publication number: CN221196878U
Application number: CN202323454742.5U
Authority: CN
Inventors: 乔起鸣; 白莹
Original assignee: Yantai Ludong Survey And Mapping Co ltd
Current assignee: Yantai Ludong Survey And Mapping Co ltd
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2024-06-21
Anticipated expiration: 2033-12-19

Abstract

The utility model discloses a longitude and latitude measuring instrument for engineering surveying and mapping, and relates to the technical field of longitude and latitude measuring instruments. The utility model comprises a longitude and latitude measuring instrument body, wherein the bottom of the longitude and latitude measuring instrument body is fixedly connected with a supporting table. According to the utility model, the movable block is supported on the inner side of the support frame and is locked and limited by the locking component, so that the space occupied by the bottom wheel is reduced by supporting the bottom wheel on the inner side of the support frame when the support frame is in static use, when the support frame and the warp and weft measuring instrument body are required to be moved, the movable block and the sliding block can be pushed to move up and down freely by being matched by the loosening locking component, the effect of convenient movement can be provided for the support frame when the support frame extends to the bottom of the support frame, the space occupied by the support frame can be reduced by inwards shrinking in the moving process, and meanwhile, the bottom wheel is always on the same horizontal line with the space occupied by the bottom wheel after shrinking and expanding of the space of the support frame, so that the space is not occupied in the moving process, and an operator is easier to operate in the moving process.

Description

Warp and weft measuring instrument for engineering survey and drawing

Technical Field

The utility model belongs to the technical field of longitude and latitude measuring instruments, and particularly relates to a longitude and latitude measuring instrument for engineering surveying and mapping.

Background

The theodolite is mainly used for measuring angles and scale points of constructional engineering, and can be divided into an optical theodolite and an electronic theodolite, and is a measuring instrument which utilizes a tiny low telescope to move in a horizontal plane and a vertical plane to determine horizontal and vertical angles, is designed according to the angle measurement principle, selects three feet of a firm ground to place a foot rest, and erects a foot rest head to a proper height so as to facilitate observation operation.

In the prior art, through retrieving chinese patent publication No. CN214663414U, a novel special theodolite for road bed mapping is disclosed, which comprises a base for erecting a theodolite body, the outside of the base is provided with a plurality of supporting legs, a plurality of supporting legs deviate from one end of the base is provided with the pin respectively, a plurality of supporting legs keep away from one side of the base is provided with the pulley, and a plurality of pulleys are detachably connected with a plurality of supporting legs through installation components respectively, a plurality of pulleys are connected with a plurality of pins through coupling assembling respectively.

Engineering survey and drawing is with longitude and latitude measuring apparatu generally need geographical position, height and azimuth etc. around the measurement on a large scale when outdoor use, generally need artifical manual removal measuring apparatu and tripod and the expansion space of the difficult control tripod subassembly of in-process that removes during the measurement to can influence the operation degree of difficulty that operating personnel removed measuring instrument, and solar ray directly can cause harmful effects to measuring instrument's survey operation when outdoor weather appears high temperature weather.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of utility model

Aiming at the problems in the related art, the utility model provides a longitude and latitude measuring instrument for engineering surveying and mapping, which aims to overcome the technical problems in the prior art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a longitude and latitude measuring instrument for engineering surveying and mapping, which comprises a longitude and latitude measuring instrument body, wherein the bottom of the longitude and latitude measuring instrument body is fixedly connected with a supporting table, the bottom of the supporting table is provided with a connecting table, the outer surface of the connecting table is fixedly connected with a connecting plate, the inner wall of the connecting plate is rotatably connected with a supporting frame, the inner wall of the supporting frame is provided with a sliding groove, the inner wall of the sliding groove is slidingly connected with a sliding block, one side surface of the sliding block is fixedly connected with a moving block, the bottom of the moving block is fixedly connected with a bottom wheel, and the top of the moving block is fixedly connected with a locking assembly.

Further, the holding groove has been seted up to the inside of support frame, the holding groove is hollow type, the kerve has been seted up to the bottom of support frame, just the kerve is linked together with the inside of holding groove.

Further, the locking assembly comprises a hollow block, wherein the inner thread of the hollow block is connected with a lock rod, and the outer surface of the lock rod is fixedly connected with a rotating rod;

Push rods are inserted into two side surfaces of the hollow block respectively, one end of each push rod is fixedly connected with a spring, one end of each spring is fixedly connected with an arc-shaped top sheet, the other end of each push rod is fixedly connected with a top block, and the arc-shaped top sheets are symmetrically located on two sides of the interior of the hollow block.

Further, the bottom of the supporting table is fixedly connected with a lifting rod, and an adjusting screw rod is connected with the inner thread of the connecting table;

The bottom of the lifting rod extends to the inside of the connecting table, and one end of the adjusting screw rod penetrates through the connecting table to extend to the inside of the lifting rod and is in threaded connection with the lifting rod.

Further, both sides face of longitude and latitude measuring apparatu body all rotates and is connected with the column, the surface fixedly connected with of column shelters from the subassembly.

Further, the shielding component comprises a connecting rod, one end of the connecting rod is inserted with a rotary inserting rod, and the outer surface of the rotary inserting rod is sleeved with a top shielding plate.

The utility model has the following beneficial effects:

1. According to the utility model, the sliding groove is arranged on the inner wall of the support frame to support the moving block on the inner side of the support frame in a matched manner with the sliding block, and the locking component is used for locking and limiting the moving block, so that the bottom wheel is supported on the inner side of the support frame to reduce the occupied space of the bottom wheel when the support frame is in static use, and when the support frame and the warp and weft measuring instrument body are required to move, the locking component is loosened to push the moving block to be matched with the sliding block to move up and down freely, the effect of convenient movement can be provided for the bottom of the support frame when the bottom of the support frame is extended, the occupied space of the support frame can be reduced by inward contraction in the moving process, and meanwhile, the bottom wheel is always on the same horizontal line with the space of the support frame along with the contraction and expansion of the space of the support frame, so that too much space is not occupied in the moving process, and operators can operate more easily in the moving process.

2. The shielding assembly is supported above the longitude and latitude measuring instrument body through the rotating column, so that shielding effect can be provided for the longitude and latitude measuring instrument body, the direct irradiation of light rays is prevented from influencing the measuring process of operators, the rotatable connecting rod can drive the top shielding plate to turn over and adjust the front and rear shielding area of the top shielding plate, the top shielding plate can independently turn over and adjust the front and rear shielding angle of the top shielding plate, and the multi-angle shielding effect is provided for the longitude and latitude measuring instrument body.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings that are needed for the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a hollow block according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a connecting table according to the present utility model;

In the drawings, the list of components represented by the various numbers is as follows:

1. A warp and weft measuring instrument body; 2. a support table; 3. a connection station; 4. a connecting plate; 5. a support frame; 6. a chute; 7. a slide block; 8. a moving block; 9. a bottom wheel; 10. a locking assembly; 11. a receiving groove; 102. a hollow block; 103. a lock lever; 104. a rotating rod; 105. a push rod; 106. a spring; 107. an arcuate topsheet; 108. a top block; 19. a lifting rod; 20. adjusting a screw; 21. a rotating column; 22. a shielding assembly; 201. a connecting rod; 202. a rotary inserting rod; 203. a top shield.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments in the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "open," "upper," "lower," "top," "middle," "inner," and the like indicate an orientation or positional relationship, merely for convenience of description and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1-4, the utility model discloses a longitude and latitude measuring instrument for engineering survey and drawing, which comprises a longitude and latitude measuring instrument body 1, wherein a supporting table 2 is fixedly connected to the bottom of the longitude and latitude measuring instrument body 1, a connecting table 3 is arranged at the bottom of the supporting table 2, a connecting plate 4 is fixedly connected to the outer surface of the connecting table 3, a supporting frame 5 is rotatably connected to the inner wall of the connecting plate 4, a sliding groove 6 is formed in the inner wall of the supporting frame 5, a sliding block 7 is slidably connected to the inner wall of the sliding groove 6, a moving block 8 is fixedly connected to one side surface of the sliding block 7, a bottom wheel 9 is fixedly connected to the bottom of the moving block 8, and a locking assembly 10 is fixedly connected to the top of the moving block 8.

When the warp and weft measuring instrument is used, the warp and weft measuring instrument body 1 is supported on the ground through the support frame 5, when the positions of the warp and weft measuring instrument body 1 and the support frame 5 are required to be moved, the restriction on the moving block 8 is relieved through the loosening locking component 10, the sliding block 7 is located on the inner wall of the sliding groove 6 and is in sliding connection with the moving block, the sliding block 8 is pushed to drive the sliding blocks 7 on two sides to slide on the inner wall of the sliding groove 6, so that the bottom wheel 9 at the bottom is driven to move downwards on the inner side of the support frame 5 until the bottom wheel 9 extends out of the bottom of the support frame 5 to be supported on the ground, at the moment, the locking component 10 is rotated to enable the bottom wheel 9 to extend to the inner wall of the sliding groove 6 again to lock the moving block 8, the top of the bottom wheel 9 is fixed, and the bottom wheel 9 at the bottom of the support frame 5 is pushed to roll so as to drive the support frame 5 to move with the warp and weft measuring instrument body 1 at the top.

According to the utility model, the sliding groove 6 is arranged on the inner wall of the support frame 5 and matched with the sliding block 7 to support the moving block 8 on the inner side of the support frame 5, and the locking component 10 is used for locking and limiting the moving block 8, so that when the support frame 5 is in static use, the bottom wheel 9 is supported on the inner side of the support frame to reduce the occupied space, when the support frame 5 and the warp and weft measuring instrument body 1 need to be moved, the locking component 10 is loosened to push the moving block 8 to be matched with the sliding block 7 to move up and down freely, the effect of convenient movement can be provided for the support frame 5 when the support frame extends to the bottom of the support frame 5, the occupied space of the support frame 5 can be reduced in an inward shrinkage manner in the moving process, and meanwhile, the bottom wheel 9 is always on the same horizontal line with the space of the support frame 5 along with the shrinkage and the expansion of the space, so that too much space is not occupied in the moving process, and an operator can operate more easily in the moving process.

In addition, in a specific application, the bottom wheel 9 is a universal wheel which can roll in any direction so as to provide various displacement orientations for the longitude and latitude measuring instrument body 1.

In one embodiment, for the accommodating groove 11, the accommodating groove 11 is formed in the supporting frame 5, the accommodating groove 11 is hollow, the bottom groove is formed in the bottom of the supporting frame 5, and the bottom groove is communicated with the interior of the accommodating groove 11.

The holding groove 11 makes the inside of the supporting frame 5 be hollow, the hollow space is larger than the volume of the bottom wheel 9, and the bottom wheel 9 descends along the inside of the holding groove 11 towards the bottom groove direction until the bottom support extending out of the bottom groove stops descending when the bottom support is on the ground.

Through establishing hollow type holding tank 11 in the lower middle section of support frame 5, be convenient for provide accommodation space for return pulley 9 and movable block 8, and make things convenient for operating personnel to relax and lock locking subassembly 10, be convenient for adjust the position of return pulley 9.

In one embodiment, for the hollow block 102, the locking assembly 10 includes a hollow block 102, a locking rod 103 is screwed inside the hollow block 102, and a rotating rod 104 is fixedly connected to an outer surface of the locking rod 103;

Push rods 105 are inserted into two side surfaces of the hollow block 102, one end of each push rod 105 is fixedly connected with a spring 106, one end of each spring 106 is fixedly connected with an arc-shaped top piece 107, the other end of each push rod 105 is fixedly connected with a top block 108, and the arc-shaped top pieces 107 are symmetrically located at two sides of the interior of the hollow block 102.

The top of the lock rod 103 extends out of the top of the hollow block 102, the lock rod 103 is rotated to enable the rotating rods 104 on two sides of the lock rod 103 to rotate to be parallel to the hollow block 102, at the moment, two ends of the rotating rods 104 are respectively contacted with the outer surfaces of two groups of arc-shaped top sheets 107, the springs 106 on the other side of the arc-shaped top sheets 107 are driven to be compressed backwards through the rotation and jacking action of the rotating rods 104, the pushing rods 105 are rapidly pushed to move backwards until the top blocks 108 on one end of the pushing rods extend backwards to be clamped in the sliding groove 6, at the moment, the lock rod 103 is in a locking state, the moving blocks 8 connected with the bottom of the hollow block 102 are locked together, the rotating rods 104 reversely rotate to be separated from the surfaces of the arc-shaped top sheets 107, and the springs 106 rebound to drive the top blocks 108 to separate from the inner walls of the sliding groove 6, so that limitation on the hollow block 102 is released, and at the moment, the moving blocks 8 are in a movable state.

Through at the inside threaded connection locking lever 103 of cavity piece 102, control bull stick 104 is just reversing to cooperate to chucking with telescopic spring 106 and loosen kicking block 108, thereby can lock and fix movable block 8 fast, conveniently adjust the position of movable block 8 return pulley 9, when not needing to remove movable block 8 and return pulley 9 by the inboard of locking at support frame 5 reduce its occupation space, make things convenient for operating personnel to promote support frame 5 and remove.

In one embodiment, for the lifting rod 19, the lifting rod 19 is fixedly connected to the bottom of the supporting table 2, and the adjusting screw rod 20 is screwed inside the connecting table 3;

Wherein, the bottom of the lifting rod 19 extends to the inside of the connecting table 3, and one end of the adjusting screw 20 penetrates through the connecting table 3 to extend to the inside of the lifting rod 19 and is in threaded connection with the lifting rod.

The lifter 19 extends to inside from the top of connecting bench 3, and adjusting screw 20 top is located the inside of lifter 19, can fix lifter 19 through the positive adjusting screw 20 that rotates in the bottom of connecting bench 3, when needs are adjusted longitude and latitude measuring apparatu body 1 height, reverse rotation adjusting screw 20 makes lifter 19 relax, promotes supporting bench 2 and drives lifter 19 and rise along the top of connecting bench 3 gradually, and longitude and latitude measuring apparatu body 1 rises to the certain height along following this moment, and again rotation adjusting screw 20 is that lifter 19 locking is fixed.

Through extending lifter 19 to the inside of connecting bench 3 and with adjusting screw 20 threaded connection, accessible rotation adjusting screw 20 control lifter 19 extends the outside length of connecting bench 3, and then the supporting bench 2 height-adjustable of being convenient for reaches the effect to longitude and latitude measuring apparatu body 1 height adjustment.

In one embodiment, for the above-mentioned rotating column 21, both side surfaces of the warp and weft measuring instrument body 1 are rotatably connected with the rotating column 21, and the outer surface of the rotating column 21 is fixedly connected with a shielding assembly 22.

The rotating columns 21 are positioned on two sides of the longitude and latitude measuring instrument body 1 and are rotationally connected with the bottoms of the shielding assemblies 22, the shielding assemblies 22 are supported above the longitude and latitude measuring instrument body 1, the coverage area of the shielding assemblies 22 is larger than the plane area of the longitude and latitude measuring instrument body 1, and the shielding assemblies 22 are supported above the longitude and latitude measuring instrument body 1 through the rotating columns 21, so that shielding effect can be provided for the longitude and latitude measuring instrument body 1, and direct light rays are prevented from affecting the measuring process of operators.

In one embodiment, for the above-mentioned connecting rod 201, the shielding assembly 22 includes a connecting rod 201, one end of the connecting rod 201 is inserted with a rotating inserting rod 202, and an outer surface of the rotating inserting rod 202 is sleeved with a top shielding plate 203.

The connecting rod 201 is rotationally connected with the rotating column 21, the connecting rod 201 is pushed to enable the connecting rod 201 to turn back and forth to drive the top shielding plate 203 to turn back and forth, meanwhile, the rotating inserting rod 202 penetrates through the connecting rod 201 and is connected with the bottom of the top shielding plate 203, the rotating inserting rod 202 is rotated to enable the top shielding plate 203 to relax, the top shielding plate 203 can be enabled to independently turn over, the top shielding plate 203 can be driven to turn back and forth to adjust the front and back shielding area through the arrangement of the rotatable connecting rod 201, and the top shielding plate 203 can be independently turned back and forth to adjust the front and back shielding angle to provide a multi-angle shielding effect for the longitude and latitude measuring instrument body 1.

In summary, by means of the above technical solution of the present utility model, a hollow accommodating groove 11 is provided in the supporting frame 5, so that a smoother accommodating space is provided for the moving block 8 and the bottom wheel 9, the bottom wheel 9 descends along the inner side of the accommodating groove 11 toward the bottom groove when moving through the bottom groove communicated with the bottom, a bottom extending channel is provided for the bottom wheel 9, since the top of the lock rod 103 extends out of the top of the hollow block 102, the lock rod 103 is rotated to make the lock rod 104 generate a rotating pressing action to drive the spring 106 on the other side of the arc-shaped top piece 107 to perform backward compression, so as to rapidly push the push rod 105 to move backward until the top block 108 on one end thereof is locked together with the moving block 8 connected with the bottom thereof after the top block 108 is extended backward and clamped in the inner side of the chute 6, the bottom wheel 9 is fixed on the inner side of the accommodating groove 11, and when the lock rod 103 is reversely rotated to reversely rotate to release from the surface of the arc-shaped top piece 107, the spring 106 is rebounded to drive the top block 108 to separate from the inner wall of the chute 6 and then release the limit of the hollow block 102, at this time, the moving block 8 and the bottom wheel 9 can move, when the height of the longitude and latitude measuring instrument body 1 needs to be adjusted, the lifting rod 19 can be fixed by rotating the adjusting screw 20 forward at the bottom of the connecting table 3, after reversely rotating the adjusting screw 20 to loosen the lifting rod 19, the lifting rod 19 is driven to gradually rise along the top of the connecting table 3 by pushing the supporting table 2, the longitude and latitude measuring instrument body 1 rises along with the rising, thereby adjusting the height of the longitude and latitude measuring instrument body 1, being convenient for adapting to different operation heights, supporting the shielding component 22 above the longitude and latitude measuring instrument body 1 through the rotating column 21, providing shielding effect for the longitude and latitude measuring instrument body 1, preventing the direct light from affecting the measuring process of an operator, and the connecting rod 201 is rotationally connected with the rotating column 21, the front and back shielding area of the top shielding plate 203 can be adjusted by pushing the connecting rod 201 to turn back and forth to drive the top shielding plate 203 to turn back and forth, and the top shielding plate 203 can be independently turned back and forth to adjust the front and back shielding angle by rotating the rotary inserting rod 202 to loosen the top shielding plate 203, so that the multi-angle shielding effect is provided for the longitude and latitude measuring instrument body 1.

According to the technical scheme, 1, the sliding groove 6 is arranged on the inner wall of the supporting frame 5, the moving block 8 is supported on the inner side of the supporting frame 5 through the matching of the sliding groove 6 and the sliding block 7, and the moving block 8 is locked and limited through the locking component 10, so that when the supporting frame 5 is in static use, the bottom wheel 9 is supported on the inner side of the supporting frame, the occupied space of the bottom wheel is reduced, when the supporting frame 5 and the warp and weft measuring instrument body 1 need to be moved, the moving block 8 and the sliding block 7 can be pushed to be matched to move up and down freely through the loosening locking component 10, the effect of convenient movement can be provided for the supporting frame 5 when the bottom wheel extends to the bottom of the supporting frame 5, the occupied space of the supporting frame 5 can be reduced due to inward shrinkage of the supporting frame 5, and the shrinkage and the expansion of the space of the bottom wheel 9 are always on the same horizontal line with the supporting frame 5, so that too much space cannot be occupied in the moving process, and operators can operate more easily in the moving process; 2. the shielding assembly 22 is supported above the longitude and latitude measuring instrument body 1 through the rotary column 21, so that shielding effect can be provided for the longitude and latitude measuring instrument body 1, the direct irradiation of light rays is prevented from influencing the measuring process of operators, the rotatable connecting rod 201 can enable the top shielding plate 203 to be driven to turn over and adjust the front and rear shielding area of the top shielding plate, and the top shielding plate 203 can be independently turned over and adjust the front and rear shielding angle of the top shielding plate, so that multi-angle shielding effect is provided for the longitude and latitude measuring instrument body 1.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above disclosed preferred embodiments of the utility model are merely intended to help illustrate the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a longitude and latitude measuring apparatu for engineering survey and drawing, includes longitude and latitude measuring apparatu body (1), its characterized in that: the warp and weft measuring instrument comprises a warp and weft measuring instrument body (1), wherein a supporting table (2) is fixedly connected to the bottom of the supporting table (2), a connecting table (3) is arranged at the bottom of the supporting table (2), a connecting plate (4) is fixedly connected to the outer surface of the connecting table (3), a supporting frame (5) is rotatably connected to the inner wall of the connecting plate (4), a sliding groove (6) is formed in the inner wall of the supporting frame (5), a sliding block (7) is slidably connected to the inner wall of the sliding groove (6), a moving block (8) is fixedly connected to one side surface of the sliding block (7), a bottom wheel (9) is fixedly connected to the bottom of the moving block (8), and a locking assembly (10) is fixedly connected to the top of the moving block (8).

2. The longitude and latitude measuring instrument for engineering surveying and mapping according to claim 1, wherein the holding groove (11) is formed in the supporting frame (5), the holding groove (11) is hollow, the bottom groove is formed in the bottom of the supporting frame (5), and the bottom groove is communicated with the inside of the holding groove (11).

3. The longitude and latitude measuring instrument for engineering survey according to claim 1, wherein the locking assembly (10) comprises a hollow block (102), a lock rod (103) is connected to the inside of the hollow block (102) in a threaded manner, and a rotating rod (104) is fixedly connected to the outer surface of the lock rod (103);

Push rods (105) are inserted into two side surfaces of the hollow block (102), one end of each push rod (105) is fixedly connected with a spring (106), one end of each spring (106) is fixedly connected with an arc-shaped top sheet (107), the other end of each push rod (105) is fixedly connected with a top block (108), and the arc-shaped top sheets (107) are symmetrically located at two sides of the interior of the hollow block (102).

4. The longitude and latitude measuring instrument for engineering survey according to claim 1, wherein the bottom of the supporting table (2) is fixedly connected with a lifting rod (19), and the inside thread of the connecting table (3) is connected with an adjusting screw (20);

The bottom of the lifting rod (19) extends to the inside of the connecting table (3), and one end of the adjusting screw (20) penetrates through the connecting table (3) to extend to the inside of the lifting rod (19) and is in threaded connection with the lifting rod.

5. The longitude and latitude measuring instrument for engineering survey and drawing according to claim 1, wherein both side surfaces of the longitude and latitude measuring instrument body (1) are rotationally connected with a rotating column (21), and the outer surface of the rotating column (21) is fixedly connected with a shielding component (22).

6. The longitude and latitude measuring instrument for engineering survey according to claim 5, wherein the shielding assembly (22) comprises a connecting rod (201), one end of the connecting rod (201) is inserted with a rotary inserting rod (202), and the outer surface of the rotary inserting rod (202) is sleeved with a top shielding plate (203).