Prism positioning support for total station

Abstract

The prism positioning support for the total station comprises a fixing lantern ring, positioning assemblies and supporting legs, the positioning assemblies are distributed on the fixing lantern ring in a triangular mode, each positioning assembly comprises an adjusting rod, an ejector rod, a spring and a plug, a mounting hole is formed in the adjusting rod, one end of the mounting hole is provided with the ejector rod, and the other end of the mounting hole is provided with the spring. A plug is arranged at the other end of the mounting hole, and a spring is arranged between the ejector rod and the plug; supporting legs extending downwards and outwards are distributed on the lower face of the fixing lantern ring in a triangular mode. The device is simple in structure, small in size, not high in requirement for measurement space, and also suitable for measurement of plane measurement points in narrow space; two hands of a person can be liberated, the prism does not need to be held by hands, the horizontal position of the fixing lantern ring can be adjusted through the adjusting supporting legs, the position of the prism is accurate, the accuracy of measured data can be guaranteed, and the measuring accuracy cannot be affected by hand shaking or other external factors. The device is simple to manufacture, low in cost, light in weight and convenient to transfer during measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring instruments and relates to a prism positioning bracket for a total station instrument. Background Art

[0002] Due to its higher tensile, compressive and shear strengths compared with traditional bridges, steel structures have smaller cross-sections, lighter self-weights, faster processing speeds and are environmentally friendly, and are now widely used in the construction of various types of bridges in various fields. As the number of steel structure bridges increases, the appearance and symbolic features of each bridge have become the goals pursued by bridge designers, which has also led to the increasingly complex structures and alignments of current steel structure bridges.

[0003] During the manufacturing process of steel structure bridges, the control of alignment and accuracy is particularly important. Whether it is the layout of the control network or the measurement of the survey control points, a total station instrument needs to be used, and the prism is used in conjunction with the total station instrument; to ensure the accuracy of the manufacturing alignment, more measurement points need to be arranged. The lightweight micro prism is deeply loved by surveyors because of its convenient movement. However, due to the lack of a tripod, the operator needs to hold the small prism by hand during use. However, during the measurement process, it is necessary to ensure that the bubble of the prism is stable and centered. Slight shaking will affect the measurement accuracy and is not easy to control. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art, solve the problem of inconvenient support of the micro prism, and provide a prism positioning bracket for a total station instrument.

[0005] To achieve the above purpose, the following technical solutions are adopted:

[0006] The prism positioning bracket for a total station instrument includes a fixed collar, a positioning component and legs. The positioning components are distributed in a triangular pattern on the fixed collar. The positioning component includes an adjusting rod, a top rod, a spring and a plug. An installation hole is provided inside the adjusting rod. One end of the installation hole is provided with a top rod. An arc-shaped top head is provided at the end of the top rod protruding from the installation hole. A plug is provided at the other end of the installation hole. A spring is provided between the top rod and the plug. The legs extending downward and outward are distributed in a triangular pattern below the fixed collar.

[0007] Preferably, a connecting ring is provided at the lower end of the leg. An adjusting leg is provided inside the connecting ring. A taper foot is provided at the lower end of the adjusting leg.

[0008] Preferably, a threaded hole is provided on the connecting ring. The adjusting leg is screwed into the threaded hole. A knob is provided at the upper end of the adjusting leg.

[0009] Preferably, connecting holes are distributed in a triangular pattern on the side wall of the fixed collar. The adjusting rod is screwed into the connecting hole.

[0010] Preferably, a fixing hole is formed in the plug, and a handle rod is arranged in the fixing hole.

[0011] Preferably, the mounting hole is a stepped hole, and a limiting platform that can cooperate with the step of the mounting hole is arranged on the ejector rod.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model has a simple structure, a small volume, and low requirements for the measurement space, and is also applicable to the measurement of plane measurement points in narrow spaces; it can free the hands of personnel, without the need to hold the prism by hand, and can adjust the horizontal position of the fixed collar by adjusting the legs, so that the position of the prism is accurate, which can ensure the accuracy of the measurement data and will not affect the measurement accuracy due to hand shaking or other external factors; the utility model is simple to manufacture, has a low cost, is light in weight, and is convenient to transfer during measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 is a schematic diagram of the structure of the fixed collar and the positioning assembly of the utility model.

[0016] Figure 3 is an exploded schematic diagram of the assembly of the positioning assembly of the utility model.

[0017] In the figure: 1, fixed collar; 2, positioning assembly; 3, leg; 4, adjusting rod; 5, ejector rod; 6, spring; 7, plug; 8, connecting ring; 9, adjusting leg; 10, taper foot; 11, knob; 13, fixing hole; 14, handle rod; 15, connecting hole; 17, limiting platform; 18, mounting hole; 19, arc-shaped top head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0019] As Figures 1 - 3 shown, a prism positioning bracket for a total station includes a fixed collar 1, a positioning assembly 2, and a leg 3. The fixed position 1 provides an installation space for the positioning assembly 2, and the leg 3 supports the fixed collar 1 to facilitate inserting a micro prism into the fixed collar 1;

[0020] The fixing collar 1 is triangularly distributed with positioning components 2 for positioning and supporting the rod part of the micro prism.

[0021] The positioning component 2 includes an adjusting rod 4, a ejector rod 5, a spring 6 and a plug 7. An installation hole 18 is formed inside the adjusting rod 4. One end of the installation hole 18 is provided with the ejector rod 5. The end of the ejector rod 5 protruding from the installation hole 18 is provided with an arc-shaped ejecting head 19 for clamping the rod part of the micro prism.

[0022] The other end of the installation hole 18 is provided with the plug 7. A spring 6 is arranged between the ejector rod 5 and the plug 7. The plug 7 prevents the spring 6 and the ejector rod 5 from running out of the installation hole 18.

[0023] The spring 6 enables the ejector rod 5 to have a pre-tightening force pressing towards the center. After the rod part of the micro prism is inserted into the fixing collar 1 and is located between the three ejector rods 5, the arc-shaped ejecting heads 19 at the ends of the three ejector rods 5 apply pressure to three points on the outer side of the rod part of the micro prism, so that it can be clamped without being locked (the friction force at the contact points between the arc-shaped ejecting heads 19 and the rod part of the micro prism is very small), and it can move up and down. Ensure that when the micro prism is horizontally adjusted, due to its own gravity, the silver tip at the lower end of the rod part can always be kept in contact with the measurement and control point.

[0024] The fixing collar 1 is triangularly distributed with legs 3 extending downward and outward below.

[0025] Further, a connecting ring 8 is arranged at the lower end of the leg 3. An adjusting leg 9 is arranged inside the connecting ring 8. A conical foot 10 is arranged at the lower end of the adjusting leg 9. The conical foot 10 can ensure that the contact between the adjusting leg 9 and the bottom surface is more sufficient and stable without shaking. By adjusting the height of the adjusting leg 9, the fixing collar 1 can be horizontally adjusted to ensure the accurate position of the micro prism.

[0026] Further, the adjusting leg 9 is screwed on the connecting ring 8. A knob 11 is arranged at the upper end of the adjusting leg 9. The knob 11 is convenient for the staff to rotate the adjusting leg 9.

[0027] Further, connecting holes 15 are triangularly distributed on the side wall of the fixing collar 1. The adjusting rod 4 is screwed in the connecting holes 15. Rotating the adjusting rod 4 can adjust the movement range of the rod part of the micro prism.

[0028] Further, a fixing hole 13 is formed in the plug 7. A handle rod 14 is arranged in the fixing hole 13. The handle rod 14 is convenient for screwing the plug 7 into the installation hole 18. After the plug 7 is installed in place, the adjusting rod 4 can be driven to rotate through the handle rod 14.

[0029] Further, the installation hole 18 is a stepped hole, and a limiting platform 17 capable of cooperating with the step of the installation hole 18 is arranged on the ejector rod 5.

[0030] Working principle: When the present utility model is in use, first align the fixed collar 1 with the observation point, then insert the rod part of the micro prism into the fixed collar 1, and at the same time make the arrow at the lower end of the rod part of the micro prism contact the observation point. Rotate the rod part of the micro prism to align the prism reflection center with the measuring instrument, and adjust the adjusting rod 4 to reduce the movement range of the rod part of the micro prism until the three arc-shaped heads 19 contact the rod part of the micro prism; then, by observing the position of the level bubble of the micro prism, the staff rotates the knob 11 to adjust the height of the adjusting leg 9 until the bubble is centered. At this time, the position of the micro prism is accurate and the measurement work can be carried out.

[0031] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present utility model, but the present utility model is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

Claims

1. A prism positioning bracket for a total station, comprising a fixing collar (1), a positioning assembly (2) and a support leg (3), wherein: The fixing collar (1) has a positioning assembly (2) distributed in a triangular pattern on the upper side. The positioning assembly (2) comprises an adjusting rod (4), a push rod (5), a spring (6) and a plug (7). A mounting hole (18) is provided inside the adjusting rod (4). A push rod (5) is provided at one end of the mounting hole (18). A plug (7) is provided at the other end of the mounting hole (18). A spring (6) is provided between the push rod (5) and the plug (7). The fixing collar (1) has legs (3) distributed in a triangular pattern on the lower side. The legs (3) extend downward and outward.

2. The prism positioning bracket for a total station according to claim 1, characterized in that: A connecting ring (8) is provided at the lower end of the supporting leg (3), an adjusting supporting leg (9) is provided inside the connecting ring (8), and a cone foot (10) is provided at the lower end of the adjusting supporting leg (9).

3. The prism positioning bracket for a total station according to claim 2, characterized in that: The connecting ring (8) is provided with a threaded hole (12), the adjusting leg (9) is screwed into the threaded hole (12), and a knob (11) is provided at the upper end of the adjusting leg (9).

4. The prism positioning bracket for a total station according to claim 1, characterized in that: The side wall of the fixing collar (1) is provided with connecting holes (15) in a triangular arrangement, and the adjusting rod (4) is screwed into the connecting holes (15).

5. The prism positioning bracket for a total station according to claim 1, characterized in that: The plug (7) is provided with a fixing hole (13), and a handle (14) is arranged in the fixing hole (13).

6. The prism positioning bracket for a total station according to claim 1, characterized in that: The mounting hole (18) is a stepped hole, and the top rod (5) is provided with a limiting platform (17) that can match the step of the mounting hole (18).

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