A level reference instrument for construction

Abstract

The invention discloses a horizontal reference instrument for construction, which mainly relates to the field of horizontal reference instruments; the invention comprises a tripod, a base is arranged on the top of the tripod, a rotating seat is arranged on the top of the base, an observation eyepiece is arranged on the top of the rotating seat, the rotating seat comprises a rotating disk and a fixed disk, the rotating disk is located on the top of the fixed disk and is rotatably connected with the fixed disk, the observation eyepiece is mounted on the top of the rotating disk, a fastening structure is arranged between the observation eyepiece and the rotating disk, the observation eyepiece is locked on the rotating disk through the fastening structure, the fixed disk is located on the top of the base and is detachably connected with the base, a clamping structure is arranged between the fixed disk and the base, and a support leg adjustment structure is arranged at the bottom of the tripod. The invention can prevent the eyepiece from rotating, ensure the accuracy of eyepiece measurement, can clamp the observation eyepiece and the rotating seat, and can also ensure that the rotating seat and the base are clamped, so as to ensure the accuracy of data measured on loose soil.

Description

Technical Field

[0001] The invention relates to the field of level reference instruments, in particular to a level reference instrument used for construction. Background Art

[0002] A horizontal reference instrument is an instrument that establishes a horizontal line of sight to measure the height difference between two points on the ground. Its principle is to measure the height difference between ground points based on the principle of leveling. Its main components include a telescope, a tube level, a vertical axis, a base, and a foot screw. It is often used in building construction or road construction to ensure the level of the road and the horizontal height difference between two points during construction. It can also be used to measure the settlement of factories and large equipment foundations, and to measure the control network elevation reference points and the control measurement of the equipment installation elevation during installation.

[0003] However, the existing level reference instrument has certain disadvantages when in use. First, it is easy to rotate the eyepiece when observing the eyepiece, which affects the accuracy of the eyepiece measurement and makes it difficult to find the target in the eyepiece. Second, the base and the rotating seat of the tripod are usually clamped by bolts, so that when the eyepiece is rotated, it is easy to cause the rotating seat to rotate as a whole, and there is a lack of a structure to prevent the rotating seat from being limited. Finally, since the use environment of the level reference instrument is relatively complex, when it is used in some sandy places or places with loose soil, the conical block is easy to sink into the ground, and the instrument will become unbalanced when subjected to a little pressure, thereby affecting the accuracy of the instrument's measurement. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to provide a level reference instrument for construction, which can prevent the eyepiece from rotating and ensure the accuracy of the eyepiece measurement. It can clamp the observation eyepiece and the rotating seat, and can also ensure that the rotating seat and the base are clamped, so as to ensure the accuracy of the measurement data on loose soil.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A level reference instrument for construction comprises a tripod, wherein a base is provided on the top of the tripod, a rotating seat is provided on the top of the base, an observation eyepiece is provided on the top of the rotating seat, the rotating seat comprises a rotating disk and a fixed disk, the rotating disk is located on the top of the fixed disk and is rotatably connected to the fixed disk, the observation eyepiece is mounted on the top of the rotating disk, and a fastening structure is provided between the observation eyepiece and the rotating disk, the observation eyepiece is locked on the rotating disk through the fastening structure, the fixed disk is located on the top of the base and is detachably connected to the base, a clamping structure is provided between the fixed disk and the base, and a leg adjustment structure is provided at the bottom of the tripod.

[0007] Preferably, the fastening structure includes a reserved cavity arranged at the bottom end of the observation eyepiece, a moving block is arranged in the reserved cavity, the moving block is slidably connected to the reserved cavity, the moving block is provided with an arc surface adapted to the rotating disk, a tightening bolt for pushing the moving block is provided on the outer wall of the observation eyepiece, the tightening bolt penetrates the outer wall of the observation eyepiece and abuts against the moving block, and a first telescopic spring is provided at one end of the moving block away from the tightening bolt.

[0008] Preferably, a guide rod is provided in the reserved cavity, and a guide hole adapted to the guide rod is provided on the moving block.

[0009] Preferably, the arc surface and the outer circumferential surface of the rotating disk are both provided with clamping teeth.

[0010] Preferably, the clamping structure includes a plurality of clamping blocks evenly arranged along the circumference of the base, the clamping block is vertically arranged, and a clamping block extending inward is provided at the top of the clamping block, a clamping groove adapted to the clamping block is provided on the outer wall of the fixed disk, a fixed block is provided in the clamping groove, a movable plate is provided in the fixed block, the movable plate is slidably connected to the fixed block, a push rod for pushing the clamping block outward is provided on the side of the movable plate close to the clamping block, and a second telescopic spring is provided on the other side, the movable plate and the movable block are connected by a connecting rope, and when the movable block moves toward the rotating disk, the movable plate moves away from the clamping block.

[0011] Preferably, a wire groove is provided at the bottom end of the rotating disk and the top end of the fixed disk, and connecting rods are provided at both ends of the wire groove, and the connecting rope is wound around the connecting rods.

[0012] Preferably, the leg adjustment structure includes a conical block arranged at the bottom end of the support rod of the tripod and a limit plate arranged on the upper side of the conical block, the limit plate is fixedly connected to the support rod, and a plurality of rotating plates are provided in a circular array on the lower side of the limit plate, the rotating plate is hinged to the limit plate through a rotating pin, and the rotating plate can be flipped 90°.

[0013] Preferably, each of the rotating plates is provided with a connecting block, and two adjacent connecting blocks are connected via a third telescopic spring.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The fastening structure of the present invention can firmly lock the observation eyepiece on the rotating disk, thereby ensuring that the observation eyepiece will not rotate during observation, and avoiding the observation eyepiece from vibrating and failing to find the observed object.

[0016] 2. The clamping structure of the present invention can firmly lock the fixed disk on the base, and can link the clamping structure with the fastening structure. By pulling the connecting rope tight while moving the movable block inward, the pulled movable plate presses the second telescopic spring, so that the push rod on the movable plate moves inward, and then the clamping block is separated from the push rod, and the clamping block of the base can be clamped with the clamping groove of the fixed disk. By tightening the bolts, the observation eyepiece and the rotating seat can be clamped, and the rotating seat and the base can also be clamped.

[0017] 3. The support leg adjustment structure of the present invention can be used in places with loose soil. After the rotating plate is unfolded, the connecting block can be pressed on the ground, increasing the contact between the rotating plate and the ground and preventing the conical block from sinking under a little pressure. Therefore, the horizontal reference instrument can be placed on the loose soil and fixed more securely, ensuring the accuracy of the measurement data on the loose soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the splitting of the present invention;

[0020] Figure 3 is a schematic diagram of the fastening structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the clamping structure of the present invention;

[0022] Figure 5 is a schematic diagram of a fixing block of the present invention;

[0023] Figure 6 It is a schematic diagram of the support leg adjustment structure of the present invention.

[0024] Numbers in the accompanying drawings: 1. observation eyepiece; 2. rotating seat; 21. rotating disk; 22. fixed disk; 3. horizontal disk; 4. fastening structure; 401. reserved cavity; 402. moving block; 403. tightening bolt; 404. guide rod; 405. first telescopic spring; 406. clamping tooth; 5. base; 6. clamping structure; 601. wire groove; 602. connecting rope; 603. connecting rod; 604. fixed block; 605. moving plate; 606. second telescopic spring; 607. push rod; 608. clamping groove; 609. clamping block; 7. tripod; 8. support leg adjustment structure; 801. conical block; 802. limit plate; 803. rotating plate; 804. rotating pin; 805. connecting block; 806. third telescopic spring. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0026] Example: As shown in the attached Figure 1-6 As shown, the present invention is a level reference instrument for construction, including a tripod 7, a base 5 is provided on the top of the tripod 7, a rotating seat 2 is provided on the top of the base 5, and an observation eyepiece 1 is provided on the top of the rotating seat 2.

[0027] The rotating seat 2 includes a rotating disk 21 and a fixed disk 22 . The rotating disk 21 is located on the top of the fixed disk 22 and is rotatably connected to the fixed disk 22 . The observation eyepiece 1 is installed on the top of the rotating disk 21 . The observation eyepiece 1 is located in the middle of the rotating disk 21 .

[0028] A fastening structure 4 is provided between the observation eyepiece 1 and the rotating disk 21 . The fastening structure 4 can be provided at a bottom corner of the observation eyepiece 1 , and the observation eyepiece 1 is locked on the rotating disk 21 through the fastening structure 4 .

[0029] The fixing plate 22 is located at the top of the base 5 and is detachably connected to the base 5. A clamping structure 6 is provided between the fixing plate 22 and the base 5. The fixing plate 22 is firmly locked on the base 5 through the clamping structure 6, and the clamping structure 6 can be linked with the fastening structure 4. A leg adjustment structure 8 is provided at the bottom of the tripod 7.

[0030] Specifically, the fastening structure 4 includes a reserved cavity 401 arranged at the bottom end of the observation eyepiece 1, the reserved cavity 401 can be opened at the bottom corner of the observation eyepiece 1, and the reserved cavity 401 is open at one end close to the rotating disk 21, a moving block 402 is arranged in the reserved cavity 401, the moving block 402 is slidably connected to the reserved cavity 401, the moving block 402 is provided with an arc surface adapted to the rotating disk 21, and the outer wall of the observation eyepiece 1 is provided with a tightening bolt 403 for pushing the moving block 402 and a screw bolt 404 for tightening the moving block 402. A threaded hole corresponding to the tightening bolt 403 is provided, and the tightening bolt 403 penetrates the outer wall of the observation eyepiece 1 and then abuts against the moving block 402. The moving block 402 is provided with a first telescopic spring 405 at one end away from the tightening bolt 403. When tightening, the moving block 402 can be pushed toward the rotating disk 21 by rotating the tightening bolt 403 in the forward direction to lock the rotating disk 21. The tightening bolt 403 is rotated in the reverse direction. Under the thrust of the first telescopic spring 405, the moving block 402 is separated from the rotating disk 21, and the observation eyepiece 1 can be rotated.

[0031] Preferably, in order to improve the sliding stability of the moving block, a guide rod 404 is provided in the reserved cavity 401 along the length direction of the reserved cavity 401 , and a guide hole adapted to the guide rod 404 is provided on the moving block 402 .

[0032] Preferably, in order to improve the stability of the fastening of the observation eyepiece, the arc surface and the outer circumferential surface of the rotating disk 21 are both provided with clamping teeth 406, which can greatly improve the friction between the arc surface and the rotating disk 21.

[0033] By tightening the tightening bolt 403 , the moving block 402 is clamped with the rotating disk 21 , thereby ensuring that the observation eyepiece 1 does not rotate during observation, and preventing the observation eyepiece 1 from being shaken and unable to find the observed object.

[0034] In addition, the bottom end of the observation eyepiece 1 covers the top end of the rotating disk 21 , a horizontal disk 3 is arranged on the top end of the rotating disk 21 , and three adjustment knobs are arranged between the rotating disk 21 and the fixed disk 22 .

[0035] The clamping structure 6 includes a plurality of clamping blocks 609 uniformly arranged along the circumference of the base 5, and three clamping blocks 609 can be used. The clamping blocks 609 are vertically arranged, and a clamping block extending inward is provided at the top of the clamping block 609. A clamping groove 608 adapted to the clamping block 609 is provided on the outer wall of the fixed disk 22. A fixed block 604 is provided in the clamping groove 608. The fixed block 604 can be a rectangular frame. A movable plate 605 is provided in the fixed block 604. The movable plate 605 is slidably connected to the fixed block 604. A push rod 607 for pushing the clamping block 609 outward is provided on one side of the movable plate 605 close to the clamping block 609, and a second telescopic spring 606 is provided on the other side. The movable plate 605 is connected to the movable block 402 by a connecting rope 602. When the movable block 402 moves toward the rotating disk 21, the movable plate 605 moves away from the clamping block 609. Preferably, the bottom end of the rotating disk 21 and the top end of the fixed disk 22 are both provided with a wire groove 601, and both ends of the wire groove 601 are provided with a connecting rod 603, and the connecting rope 602 is wound around the connecting rod 603. The moving plate 605 is slidably connected to the inside of the fixed block 604, and the end of the push rod 607 is in contact with the clamping block 609. By pulling the connecting rope 602 tight while moving the moving block 402 inward, the pulled moving plate 605 presses the second telescopic spring 606, so that the push rod 607 on the moving plate 605 moves inward, and then the clamping block 609 is separated from the push rod 607, so that the clamping block 609 of the base 5 can be clamped with the clamping groove 608 of the fixed disk 22. By tightening the bolt 403, the observation eyepiece 1 and the rotating seat 2 can be clamped, and the rotating seat 2 and the base 5 can also be ensured to be clamped.

[0036] The support leg adjustment structure 8 includes a conical block 801 disposed at the bottom end of the support rod of the tripod 7 and a limit plate 802 disposed on the upper side of the conical block 801. The limit plate 802 is in a circular ring shape and is fixedly connected to the support rod. A plurality of rotating plates 803 are provided in an annular array at the lower side of the limit plate 802. Three rotating plates 803 can be used. The rotating plates 803 are hinged to the limit plate 802 through a rotating pin 804. The rotating plates 803 can be turned 90 degrees. Preferably, each of the rotating plates 803 is provided with a connecting block 805, and two adjacent connecting blocks 805 are connected by a third telescopic spring 806. In some places with loose soil, after the rotating plate 803 is unfolded, the connecting block 805 can be pressed on the ground, thereby increasing the contact between the rotating plate 803 and the ground and preventing the conical block 801 from sinking under a little pressure. As a result, the horizontal reference instrument is placed on the loose soil and fixed more securely, ensuring the accuracy of the measured data on the loose soil. After use, the tripod 7 is lifted up, and the rotating plate 803 automatically returns to its original position under the action of the third telescopic spring 806.

[0037] When the present invention is in use, the base 5 at the bottom end of the tripod 7 is aligned with the rotating base 2, the fixed plate 22 of the rotating base 2 and the base 5 are preliminarily fixed by bolts, and then the base 5 and the fixed plate 22 are fixed by the clamping structure 6. Specifically, the clamping block 609 of the base 5 is clamped with the clamping groove 608 of the fixed plate 22, so that the rotating base 2 and the base 5 are aligned, and then the rotating plate 21 is driven to rotate by rotating the observation eyepiece 1, so that it is rotated to a suitable position, and then the tightening bolt 403 of the fastening structure 4 is rotated so that the tightening bolt 403 pushes the guide rod 404 to move along the inside of the reserved cavity 401 until the clamping teeth 406 of the moving block 402 are clamped with the rotating plate 21, thereby avoiding the observation eyepiece 1 from being moved when determining the position. The moving block 402 is fixed by tightening the tightening bolt 403 so as to be clamped with the rotating disk 21, thereby ensuring that the observation eyepiece 1 will not rotate during observation, and avoiding the observation eyepiece 1 from vibrating and failing to find the observed object. The moving block 402 will tighten the connecting rope 602 while moving, thereby moving the moving plate 605 and the push rod 607 internally. In the absence of the push rod 607 against the clamping block 609, the clamping block 609 is clamped in the clamping groove 608, thereby further clamping the rotating seat 2. When it is necessary to adjust the angle of the observation eyepiece 1, the tightening bolt 403 can be rotated at this time, and the moving block 402 is moved along the guide rod 404 under the action of the first telescopic spring 405, thereby separating the clamping teeth 406 of the moving block 402 from the rotating disk 21. The rotation angle of the observation eyepiece 1 can be adjusted, and then the horizontal height difference between two points can be measured. When the rotating seat 2 and the base 5 need to be separated, the tightening bolt 403 is loosened at this time to make the moving block 402 move outward, so that the connecting rope 602 is loosened, and the moving plate 605 and the push rod 607 move outward without the tension of the connecting rope 602 under the action of the second telescopic spring 606, and the clamping block 609 pushes the clamping block 609 to separate the clamping block 609 from the clamping groove 608, which makes it more convenient to separate the rotating seat 2 and the base 5. At this time, the tripod 7 can be taken out, and the observation eyepiece 1 and the rotating seat 2 can be clamped by tightening the bolt 403, and the rotating seat 2 and the base 5 can also be clamped. In some sandy or soily places, In loose places, the tripod 7 is inserted into the ground through the conical block 801, and the rotating plate 803 is rotated around the rotating pin 804, so that the three rotating plates 803 of the tripod 7 are supported on the ground. When the rotating plates 803 are unfolded, the rotating plates 803 can be tightened by the third telescopic spring 806 to prevent the rotating plates 803 from falling from the conical block 801. When the rotating plates 803 are stored, the rotating plates 803 can be tightened by the third telescopic spring 806 to prevent the rotating plates 803 from rotating. The contact between the rotating plates 803 and the ground can be increased by the support foot adjustment structure 8 to prevent the conical block 801 from sinking under a little pressure, so that the horizontal reference instrument is placed on the loose soil and fixed more firmly, thereby ensuring the accuracy of the data measured on the loose soil.

Claims

1. A level reference instrument for construction, comprising a tripod (7), a base (5) being provided on the top of the tripod (7), a rotating seat (2) being provided on the top of the base (5), and an observation eyepiece (1) being provided on the top of the rotating seat (2), characterized in that: The rotating base (2) comprises a rotating disk (21) and a fixed disk (22); the rotating disk (21) is located on the top of the fixed disk (22) and is rotatably connected to the fixed disk (22); the observation eyepiece (1) is mounted on the top of the rotating disk (21); a fastening structure (4) is provided between the observation eyepiece (1) and the rotating disk (21); the observation eyepiece (1) is locked on the rotating disk (21) by the fastening structure (4); the fixed disk (22) is located on the top of the base (5) and is detachably connected to the base (5); a clamping structure (6) is provided between the fixed disk (22) and the base (5); and a foot adjustment structure (8) is provided at the bottom of the tripod (7); The fastening structure (4) comprises a reserved cavity (401) arranged at the bottom end of the observation eyepiece (1), a moving block (402) being arranged in the reserved cavity (401), the moving block (402) being slidably connected to the reserved cavity (401), the moving block (402) being provided with an arc surface adapted to the rotating disk (21), a tightening bolt (403) for pushing the moving block (402) being arranged on the outer wall of the observation eyepiece (1), the tightening bolt (403) penetrating the outer wall of the observation eyepiece (1) and then abutting against the moving block (402), and a first telescopic spring (405) being arranged at one end of the moving block (402) away from the tightening bolt (403); The clamping structure (6) comprises a plurality of clamping blocks (609) uniformly arranged along the circumference of the base (5), the clamping blocks (609) being arranged vertically, and a clamping block extending inward is arranged at the top of the clamping block (609), a clamping groove (608) adapted to the clamping block (609) is arranged on the outer wall of the fixed plate (22), a fixed block (604) is arranged in the clamping groove (608), a movable plate (605) is arranged in the fixed block (604), and the movable plate (605) is arranged in the movable plate (605). The movable plate (605) is slidably connected to the fixed block (604); a push rod (607) for pushing the clamping block (609) outward is provided on one side of the movable plate (605) close to the clamping block (609); a second telescopic spring (606) is provided on the other side; the movable plate (605) is connected to the movable block (402) via a connecting rope (602); when the movable block (402) moves toward the rotating disk (21), the movable plate (605) moves away from the clamping block (609).

2. A level reference instrument for construction according to claim 1, characterized in that: A guide rod (404) is provided in the reserved cavity (401), and a guide hole adapted to the guide rod (404) is provided on the moving block (402).

3. A level reference instrument for construction according to claim 1, characterized in that: The arc surface and the outer circumferential surface of the rotating disk (21) are both provided with clamping teeth (406).

4. A level reference instrument for construction according to claim 1, characterized in that: A wire groove (601) is provided at the bottom end of the rotating disk (21) and the top end of the fixed disk (22). Connecting rods (603) are provided at both ends of the wire groove (601). The connecting rope (602) is wound around the connecting rod (603).

5. A level reference instrument for construction according to claim 1, characterized in that: The support leg adjustment structure (8) comprises a conical block (801) arranged at the bottom end of the support rod of the tripod (7) and a limit plate (802) arranged on the upper side of the conical block (801); the limit plate (802) is fixedly connected to the support rod; a plurality of rotating plates (803) are arranged in a circular array at the lower side of the limit plate (802); the rotating plate (803) is hinged to the limit plate (802) via a rotating pin (804); and the rotating plate (803) can be turned 90 degrees.

6. A level reference instrument for construction according to claim 5, characterized in that: Each rotating plate (803) is provided with a connecting block (805), and two adjacent connecting blocks (805) are connected via a third telescopic spring (806).

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