CN105042293A - Leveling mechanism for measuring instruments - Google Patents

Abstract

The invention discloses a leveling mechanism for a measuring instrument, which is characterized in that it comprises: a working platform; a connecting rod connecting the working platform and the pole of the leveling mechanism; a moving rod connected to the connecting rod through a hinge, a base, Connecting bolts, rubber pads, adjustment parts, brackets. The mechanism can complete the leveling only by adjusting the parts with the knob, and the leveling process is quick and easy. The area of the working platform can be designed and adjusted according to the actual measurement requirements, so it is easy to apply to a variety of measurement conditions; it can carry multiple instruments, so the mechanism for each instrument to be leveled separately greatly improves the measurement accuracy and reduces The measurement error is reduced and the cost is saved.

Description

A leveling mechanism for measuring instruments

technical field

The invention relates to a leveling mechanism, in particular to a leveling mechanism for measuring instruments.

Background technique

Many measuring instruments are often used in scientific research and engineering measurement, and these measuring instruments usually need to be fixed on a bracket when working. Sometimes in order to reduce the error, it is often required that the instrument must be placed horizontally, so the bracket for fixing the instrument must be able to be leveled according to the actual environment, so as to strictly ensure that the instrument is placed horizontally.

In the Chinese utility model patent CN103792796A, a photomask support leveling mechanism is disclosed. The support frame is set on the four corners of the quadrilateral base, the connecting rod is inserted into the support frame and fitted with the convex spherical surface of the bottom of the cover in the support frame, so as to realize the purpose of suspension adjustment of the mask support. Since the screws in the support frame at the four corners of the base need to be adjusted separately during the leveling process, the leveling verification is cumbersome and difficult to complete quickly. In addition, this mechanism is only applicable to the leveling of the mask rack, and is not applicable to other instruments.

In the Chinese utility model patent CN203202525U, a support leveling mechanism of a low-frequency mechanical spectrometer is disclosed. The mechanism achieves the purpose of adjustment by axially connecting the support frame, the plug, the screw and the washer, and adjusting the cooperation between the stud and the nut. The defects of this mechanism mainly include: one, four such mechanisms are used during leveling and they are all on the same level, which causes the adjustment process to be cumbersome and increases the amount of labor; Cooperate with the four corner holes of the low-frequency mechanical spectrometer panel, so the size of the mechanism is limited by the size of the panel hole, and the versatility is poor; third, this mechanism is only suitable for the leveling of the low-frequency mechanical spectrometer. Narrow and limited.

Contents of the invention

In view of the above shortcomings, the present invention provides a bracket leveling mechanism suitable for various measuring instruments, which has a simple structure and is easy to operate, and effectively solves the problem of instrument leveling in scientific research and engineering measurement.

In order to achieve the above object, the technical scheme adopted in this application is:

A leveling mechanism for a measuring instrument, comprising: a working platform; a connecting rod connecting the working platform and the support rod of the leveling mechanism; a moving rod connected to the connecting rod through a hinge, a base, a connecting bolt, a rubber pad, and an adjusting part , stand,

The supporting and fixed working surface of the working platform is provided with several threaded holes at intervals, a hexagonal base is fixed on the bottom of the working surface, and concave platforms with a certain thickness are respectively provided on the three sides separated from the hexagonal base. Blind holes are respectively opened on the inner wall of the platform.

The connecting rod is a T-shaped connecting rod, and through holes are opened on both ends of the head of the connecting rod, and the connecting bolt is installed in the through hole, and is an interference fit with the through hole.

The connecting bolt is composed of a peg, a bolt body and a spring. There are through holes at both ends of the bolt body. The diameter of the through hole near the section is small, and the diameter of the middle part is large. Under the action of the bolt, it is stuck on the journal inside the bolt body, and the tail of the bolt is matched with the blind hole on the inner wall of the concave table of the working platform base.

One end of the moving rod is connected to the tail of the T-shaped connecting rod through a hinge, and the other end has a T-shaped blind hole with a smaller diameter near the end face and a larger diameter away from the end face.

One end of the adjusting part is T-shaped, and the thickness of the T-shaped end is equivalent to the depth of the T-shaped blind hole head of the moving rod. The T-shaped end of the adjusting part is matched with the T-shaped blind hole of the moving rod. The rods are connected together using their own T-shaped design and can rotate about a common axis. The other end of the adjustment component is provided with a thread, which forms a thread pair with the bracket.

A threaded hole with a certain depth is opened at one end of the bracket, which forms a threaded pair with the threaded portion of the adjusting component. The other end of the bracket is glued to the rubber pad.

Compared with the prior art, the present application has the following advantages:

First, since the mechanism has only three supports to form the leveling mechanism, it only needs to adjust two of the adjusting parts at most to achieve leveling easily, which has the characteristics of high installation accuracy and simple operation;

Second, after the leveling is completed, there is no need to disassemble it, which can ensure permanent balance, thereby improving the service life of the leveling mechanism;

Thirdly, the workbench plane of the leveling mechanism is relatively large, which can effectively ensure the overall balance after adjustment;

Fourth, the structure can be used for various measuring instruments and has wide applicability;

Fifth, due to the larger workbench area, two or more measuring instruments can be placed and fixed at the same time, thus greatly improving the working efficiency and working convenience of the instrument.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a leveling mechanism for a measuring instrument.

Fig. 2 is a schematic diagram of the connection structure between the connecting rod and the base.

FIG. 3 is a partial sectional view of FIG. 2 .

Fig. 4 is a schematic diagram of the connection structure between the adjustment part and various components.

In the figure: 1. Base 2. T-shaped connecting rod 3. Rubber pad 4. Bearing 5. Adjusting part 6. Moving rod 7. Hinge 8. Working platform 9. Spirit level.

Detailed ways

A leveling mechanism and working principle for a measuring instrument provided by the present application will be further described in detail below in conjunction with the accompanying drawings.

With reference to Fig. 1, Fig. 2, a kind of leveling mechanism that is used for measuring instrument, by working platform 8, the T-shaped connecting rod 2 that connects working platform 8 and leveling mechanism strut, the dynamic that links to each other with connecting rod 2 through hinge 7 The rod 6, the base 1, the connecting bolt, the rubber pad 3, the adjusting part 5 and the bracket are composed. The adjustment support points of the leveling mechanism are completed by three brackets. According to the principle of determining a plane by three points, as long as the connection point of the connecting rod 2 and the base 1 is kept on the same horizontal plane, the working platform can be kept horizontal. The base 1 has level gauges 9 installed on two surfaces, and according to the theorem of space geometry, if the two level gauges show level, then the horizontal workbench is in a horizontal state. The support 4, the adjusting part 5, the moving rod 6, and the base constitute a basic bar assembly, and the adjusting part adjusts the space position of each bar assembly on the frame, and the three bar assemblies can completely determine the space position of the base 1. First, adjust the height of two of the supports, and the spirit level between them shows level, which means that the connecting line between the hinge 7 center points of these two supports is at the level. Then adjust the other bracket so that the level between it and its adjacent bracket shows level, then the leveling is complete.

Referring to FIG. 3 , the hinge between the T-shaped connecting rod 2 and the base 1 is a structure with spring pegs. The inside of the T-shaped connecting rod 2 is an inner shoulder structure, and its function is to fix the pegs. A spring is connected between the two pegs. After assembly, the spring is in a certain compressed state. When the bracket needs to be replaced, the peg can be compressed, and the connecting rod 2 is separated from the base 1, thereby achieving the purpose of convenient replacement.

Referring to FIG. 4 , the assembling part of the moving rod 6 and the regulating part 5 is an inner shoulder structure, the top of the regulating part 5 is mounted on the structure, and the regulating part 5 can rotate around the common axis in the moving rod 6 . The tail of the adjustment part 5 has a precision thread, which forms a thread pair with the threaded hole of the bracket. During adjustment, the adjustment member 5 can be rotated to adjust the lifting of the moving rod 6 relative to the support 4, so as to achieve the purpose of level adjustment. The bottom of the support 4 is equipped with a rubber pad 3, which can buffer the load and fully contact with the foundation to ensure its stability.

The mechanism can complete the leveling only by adjusting the knob 5, and the leveling process is fast, convenient and fast. The area of the working platform 8 can be designed and adjusted according to the actual measurement requirements, so it is easy to apply to various measurement conditions; it can carry multiple instruments, so the mechanism for each instrument to be leveled separately greatly improves the measurement accuracy and reduces The measurement error is small and the cost is saved.

Claims (6)

1. for a levelling gear for surveying instrument, it is characterized in that: comprising: working platform; Connect the connecting rod of working platform and levelling gear pole; The lever be connected with connecting rod by hinge and pedestal, coupling bar, rubber pad, adjustment member, support,

Spaced apartly on the support stationary face of described working platform be provided with several tapped hole, be fixed with a hexagonal base bottom working surface, three limits be separated by offer certain thickness concave station respectively, concave station inwall offers blind hole respectively with hexagonal base.

2. levelling gear according to claim 1, is characterized in that: described connecting rod is T-shaped connecting rod, and link rod head both ends of the surface have through hole, and coupling bar is arranged in this through hole, is interference fit with this through hole.

3. levelling gear according to claim 1, it is characterized in that: described coupling bar is made up of peg, bolt body, spring, bolt body two ends have through hole, this through hole is little near the section diameter of section, intermediate portion diameter is large, it is inner that peg heads is arranged on bolt body, is stuck on the axle journal of bolt body inside under the action of the spring, the blind hole Spielpassung of the concave station inwall of peg afterbody and working platform pedestal.

4. levelling gear according to claim 1, is characterized in that: described lever one end is connected with T-shaped connecting rod afterbody by hinge, and the other end has one near the little T-shaped blind hole large away from end face diameter of end face diameter.

5. levelling gear according to claim 1, it is characterized in that: described adjustment member one end head is T-shaped, the thickness of T-shaped end head is suitable with the degree of depth of lever T-shaped blind hole head, adjustment member T-shaped end and lever T-shaped blind hole Spielpassung, adjustment member and lever utilize the T-shaped design of self to link together and can rotate around common axis; The other end of adjustment member is provided with screw thread, and is configured to screw pair.

6. levelling gear according to claim 1, is characterized in that: described support one end has the tapped hole of certain depth, forms screw pair with the helical thread portion of adjustment member; The support the other end and rubber pad gluing.