Measuring clamp for surveying and mapping instrument calibration

Abstract

The utility model discloses a measuring clamp for surveying and mapping instrument calibration, which belongs to the technical field of measuring clamps and comprises a base, a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are oppositely arranged at the top of the base, and a rotating component is arranged at the top of the base. Angle adjusting assemblies are arranged on the outer sides of the first clamping plate or the second clamping plate; rotating shafts are arranged on the outer sides of the first clamping plates or the second clamping plates; the rotating assembly comprises a supporting table fixedly arranged on the top of the base, a rotating base movably arranged on the outer side of the supporting table and a positioning unit arranged on the outer side of the rotating base. The angle adjusting assembly comprises a first support arranged on the outer side of the rotating shaft, a second support installed on the outer side of the first support and a limiting unit arranged on the inner side of the second support. According to the utility model, through the arrangement of the rotating assembly and the angle adjusting assembly, the surveying and mapping instrument can be overturned and overhauled conveniently, the verification time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring fixture technology, and in particular to a measuring fixture for calibrating surveying instruments. Background Technology

[0002] Surveying instruments are instruments and devices designed and manufactured for data acquisition, processing, and output in surveying operations. There are many types of surveying instruments, such as theodolites, levels, plane tables, electromagnetic distance measuring instruments, total stations, gyro theodolites, laser surveying instruments, and so on. After a period of time, surveying instruments must be calibrated and recalibrated, including replacing some easily damaged small parts, to ensure the accuracy and validity of the measurement data. Surveying instruments are generally quite precise instruments, and regular inspection and recalibration of parameters are methods of maintenance. Measurement fixtures are required during calibration.

[0003] Existing surveying instrument measuring fixtures generally include a miniature cylinder and a clamping plate mounted on the output shaft of the miniature cylinder to clamp and limit the surveying instrument. However, once the surveying instrument is fixed by the fixture, it cannot be rotated and can only be inspected on a flat surface. This makes it extremely inconvenient to operate when replacing parts, prolongs the calibration time, and reduces work efficiency.

[0004] Therefore, there is an urgent need to provide a measuring fixture for calibrating surveying instruments to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing measuring fixtures for surveying instruments, which generally include a miniature cylinder and a clamping plate installed on the output shaft of the miniature cylinder to clamp and limit the surveying instrument. However, the surveying instrument cannot be rotated after being fixed by the fixture, and can only be inspected on a flat surface. The operation is extremely inconvenient when replacing parts, which prolongs the calibration time and reduces work efficiency. This utility model provides a measuring fixture for the calibration of surveying instruments.

[0006] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a measuring fixture for calibrating surveying instruments is provided, including a base, a first clamping plate and a second clamping plate disposed opposite to each other on the top of the base, a rotating component is provided on the top of the base, and an angle adjustment component is provided on the outer side of the first clamping plate or the second clamping plate.

[0007] A rotating shaft is provided on the outer side of either the first or the second clamping plate;

[0008] The rotating assembly includes a support platform fixedly mounted on the top of the base, a rotating seat movably mounted on the outside of the support platform, and a positioning unit mounted on the outside of the rotating seat.

[0009] The angle adjustment assembly includes a first bracket disposed on the outside of the rotating shaft, a second bracket mounted on the outside of the first bracket, and a limiting unit disposed on the inside of the second bracket. A limiting hole is provided at the outer edge of the rotating shaft.

[0010] The present invention is further configured such that supports are installed at the bottom corners of the base.

[0011] The present invention is further configured such that: a support plate is mounted on the top of the rotating seat, and the rotating shaft is movably connected to the side wall of the support plate.

[0012] The present invention is further configured such that: the rotating shaft includes one end of an extension rod movably connected to the inside of a movable rod on the side wall of the support plate, the other end of the extension rod is fixedly connected to the outer side of the first clamping plate or the second clamping plate, and an extrusion member is provided on the outer side of the extension rod, and a locking member is threadedly connected to the outer wall of the movable rod.

[0013] The present invention is further configured such that: the positioning unit includes a first fixing plate and a second fixing plate installed on the outer peripheral surface of the rotating seat; a positioning rod is movably arranged in the middle of the first fixing plate and the second fixing plate; a reset member is arranged on the outer side of the positioning rod; and a positioning groove adapted to the bottom end size of the positioning rod is opened on the top surface of the base.

[0014] The present invention is further configured such that there are multiple positioning slots, which are arranged in a circular array with the center point of the base as the center.

[0015] The present invention is further configured such that: the limiting unit includes a threaded rod movably connected to the inner side of the second bracket, a sliding sleeve threaded to the outer side of the threaded rod, one end of a connecting rod installed on the outer surface of the sliding sleeve, a limiting plate installed at the other end of the connecting rod, a limiting rod installed on the side of the limiting plate relative to the rotating shaft, and the end dimension of the limiting rod being adapted to the dimension of the limiting hole.

[0016] The present invention is further configured such that: the limiting unit also includes a limiting post installed in the middle of the side of the limiting plate, and a limiting groove adapted to the size of the limiting post is provided at the middle position of the outer end of the rotating shaft.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model uses a rotating component to pull the positioning rod upward to separate its bottom end from the positioning groove, thereby releasing the restriction on the rotating seat. By rotating the rotating seat, the rotational position of the surveying instrument can be adjusted.

[0019] 2. This utility model uses an angle adjustment component to adjust the axial rotation angle of the surveying instrument by rotating the first or second clamping plate. After adjustment, the threaded rod is rotated, causing the sliding sleeve to slide along the length of the threaded rod under the action of the threaded pair. When the sliding sleeve slides, it will move the limiting plate with the connecting rod, so that one end of the limiting rod is inserted into the limiting hole, thereby limiting the axial rotation angle of the rotating shaft. This facilitates the overturning and maintenance of the surveying instrument, reduces calibration time, and improves work efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 This is a cross-sectional perspective view of the present invention.

[0023] Figure 4 This utility model Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 This utility model Figure 3 A magnified view of a section at point C.

[0025] In the diagram: 1. Base; 11. Support; 2. First clamping plate; 3. Second clamping plate; 4. Rotating assembly; 41. Support platform; 42. Rotating seat; 421. Support plate; 43. Positioning unit; 431. First fixing plate; 432. Second fixing plate; 433. Positioning rod; 434. Reset component; 435. Positioning groove; 5. Angle adjustment assembly; 51. First bracket; 52. Second bracket; 53. Limiting unit; 531. Threaded rod; 532. Sliding sleeve; 533. Connecting rod; 534. Limiting plate; 535. Limiting rod; 536. Limiting post; 54. Limiting hole; 6. Rotating shaft; 61. Movable rod; 62. Extension rod; 63. Pressing component; 64. Locking component. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0027] Please see Figure 1 - Figure 5A measuring fixture for calibrating surveying instruments includes a base 1, a first clamping plate 2 and a second clamping plate 3 disposed opposite to each other on the top of the base 1, a rotating component 4 disposed on the top of the base 1, the rotating component 4 being used to adjust the orientation of the surveying instrument held by the first clamping plate 2 and the second clamping plate 3, and an angle adjustment component 5 disposed on the outer side of the first clamping plate 2 or the second clamping plate 3, the angle adjustment component 5 being used to adjust the rotation angle of the surveying instrument, thereby realizing multi-angle and multi-directional adjustment of the surveying instrument through the rotating component 4 and the angle adjustment component 5;

[0028] A rotating shaft 6 is provided on the outer side of either the first clamping plate 2 or the second clamping plate 3;

[0029] The rotating assembly 4 includes a support platform 41 fixedly mounted on the top of the base 1, a rotating seat 42 movably mounted on the outside of the support platform 41, and a positioning unit 43 mounted on the outside of the rotating seat 42.

[0030] The angle adjustment component 5 includes a first bracket 51 disposed on the outside of the rotating shaft 6, a second bracket 52 disposed on the outside of the first bracket 51, and a limiting unit 53 disposed on the inside of the second bracket 52. A limiting hole 54 is provided at the outer edge of the rotating shaft 6. Preferably, there are multiple limiting holes 54, and the multiple limiting holes 54 are distributed in a circular array with the center point of the rotating shaft 6 as the center.

[0031] Each base 1 has a support 11 installed at its bottom corner.

[0032] The top of the rotating seat 42 is mounted on a support plate 421, and the rotating shaft 6 is movably connected to the side wall of the support plate 421.

[0033] The rotating shaft 6 includes a movable rod 61 movably connected to the side wall of the support plate 421, and one end of an extension rod 62 movably disposed inside the movable rod 61. The other end of the extension rod 62 is fixedly connected to the outer side of the first clamping plate 2 or the second clamping plate 3. A pressing member 63 is provided on the outer side of the extension rod 62. A locking member 64 is threadedly connected to the outer wall of the movable rod 61. Preferably, the pressing member 63 is a compression spring and the locking member 64 is a locking bolt.

[0034] The positioning unit 43 includes a first fixing plate 431 and a second fixing plate 432 installed on the outer periphery of the rotating seat 42. A positioning rod 433 is movably arranged in the middle of the first fixing plate 431 and the second fixing plate 432. A reset member 434 is arranged on the outer side of the positioning rod 433. A positioning groove 435 adapted to the bottom end size of the positioning rod 433 is opened on the top surface of the base 1.

[0035] The positioning groove 435 is a plurality of such grooves, which are arranged in a circular array with the center point of the base 1 as the center. The multiple positioning grooves 435, together with the positioning rod 433, can be used to fix the rotation angle of the rotating seat 42 in multiple directions.

[0036] The limiting unit 53 includes a threaded rod 531 movably connected to the inner side of the second bracket 52, a sliding sleeve 532 threadedly connected to the outer side of the threaded rod 531, a connecting rod 533 installed on one end of the outer surface of the sliding sleeve 532, a limiting plate 534 installed on the other end of the connecting rod 533, a limiting rod 535 installed on the side of the limiting plate 534 relative to the rotating shaft 6, and the end size of the limiting rod 535 being adapted to the size of the limiting hole 54.

[0037] The limiting unit 53 also includes a limiting post 536 installed in the middle of the side of the limiting plate 534, and a limiting groove adapted to the size of the limiting post 536 is provided at the middle of the outer end of the rotating shaft 6.

[0038] In use, this invention first adjusts the extension length of the extension rod 62, then limits the length of the extension rod 62 by rotating the locking member 64. The surveying instrument is then fixed by the first clamping plate 2 and the second clamping plate 3. When the rotational orientation of the surveying instrument needs adjustment, the positioning rod 433 is pulled upwards to separate its bottom end from the positioning groove 435, thereby releasing the limitation on the rotating seat 42. Rotating the rotating seat 42 allows adjustment of the rotational orientation of the surveying instrument. Rotating the first clamping plate 2 or the second clamping plate 3 adjusts the axial rotation angle of the surveying instrument. After adjustment, rotating the threaded rod 531 causes the sliding sleeve 532 to slide along the length of the threaded rod 531 under the action of the threaded pair. As the sliding sleeve 532 slides, it drives the limiting plate 534 to move via the connecting rod 533, causing one end of the limiting rod 535 to engage with the limiting hole 54, thus limiting the axial rotation angle of the rotating shaft 6. This facilitates the overturning and maintenance of the surveying instrument, reduces calibration time, and improves work efficiency.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A measuring fixture for calibrating surveying instruments, comprising a base (1), a first clamping plate (2) and a second clamping plate (3) disposed opposite each other on the top of the base (1), characterized in that: The base (1) is provided with a rotating component (4) at its top, and the first clamping plate (2) or the second clamping plate (3) is provided with an angle adjustment component (5) on its outer side. A rotating shaft (6) is provided on the outer side of either the first clamping plate (2) or the second clamping plate (3); The rotating assembly (4) includes a support platform (41) fixedly disposed on the top of the base (1), a rotating seat (42) movably disposed on the outside of the support platform (41), and a positioning unit (43) disposed on the outside of the rotating seat (42). The angle adjustment assembly (5) includes a first bracket (51) disposed on the outside of the rotating shaft (6), a second bracket (52) installed on the outside of the first bracket (51), and a limiting unit (53) disposed on the inside of the second bracket (52). A limiting hole (54) is provided at the outer edge of the rotating shaft (6).

2. A measuring fixture for calibrating surveying instruments according to claim 1, characterized in that: Each of the bases (1) has a support (11) installed at the bottom corner.

3. A measuring fixture for calibrating surveying instruments according to claim 2, characterized in that: The top of the rotating seat (42) is fitted with a support plate (421), and the rotating shaft (6) is movably connected to the side wall of the support plate (421).

4. A measuring fixture for calibrating surveying instruments according to claim 3, characterized in that: The rotating shaft (6) includes a movable rod (61) movably connected to the side wall of the support plate (421), an extension rod (62) movably disposed inside the movable rod (61), the other end of the extension rod (62) being fixedly connected to the outer side of the first clamping plate (2) or the second clamping plate (3), and an extrusion member (63) being provided on the outer side of the extension rod (62), and a locking member (64) being threadedly connected to the outer wall of the movable rod (61).

5. A measuring fixture for calibrating surveying instruments according to claim 4, characterized in that: The positioning unit (43) includes a first fixing plate (431) and a second fixing plate (432) installed on the outer periphery of the rotating seat (42). A positioning rod (433) is movably arranged in the middle of the first fixing plate (431) and the second fixing plate (432). A reset member (434) is arranged on the outer side of the positioning rod (433). A positioning groove (435) adapted to the bottom size of the positioning rod (433) is opened on the top surface of the base (1).

6. A measuring fixture for calibrating surveying instruments according to claim 5, characterized in that: There are multiple positioning slots (435), and the multiple positioning slots (435) are arranged in a circular array with the center point of the base (1) as the center.

7. A measuring fixture for calibrating surveying instruments according to claim 6, characterized in that: The limiting unit (53) includes a threaded rod (531) movably connected to the inner side of the second bracket (52), a sliding sleeve (532) threaded to the outer side of the threaded rod (531), and a connecting rod (533) installed on one end of the outer surface of the sliding sleeve (532). A limiting plate (534) is installed on the other end of the connecting rod (533). A limiting rod (535) is installed on the side of the limiting plate (534) relative to the rotating shaft (6). The end size of the limiting rod (535) is adapted to the size of the limiting hole (54).

8. A measuring fixture for calibrating surveying instruments according to claim 7, characterized in that: The limiting unit (53) also includes a limiting post (536) installed in the middle of the side of the limiting plate (534), and a limiting groove adapted to the size of the limiting post (536) is provided at the middle of the outer end of the rotating shaft (6).

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