CN216051954U

CN216051954U - Tiltable near-field scanning frame

Info

Publication number: CN216051954U
Application number: CN202121698020.2U
Authority: CN
Inventors: 刘欢欢
Original assignee: Tianjin Jieli Technology Co ltd
Current assignee: Tianjin Jieli Technology Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-15
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a tiltable near-field scanning frame which comprises an installation base and base side plates, wherein the two sides of the installation base are fixedly connected with the base side plates, the two ends of the installation base are provided with guide rods, a case is fixed between the two sides of each guide rod and the base side plates and is provided with an installation screw, the outer part of the installation base is movably sleeved with a movable base, the top end of the movable base is fixedly connected with a threaded sleeve block, and the top end of the threaded sleeve block is provided with a linear guide rail. This inclinable near field scanning frame starts to drive the actuating cylinder through being provided with linear guide, the rail driver, the mobile station, drive actuating cylinder, removes the seat, the fly leaf, optical assembly and articulated shaft, drives actuating cylinder and passes through the piston rod ejecting with the fly leaf, and the fly leaf passes through articulated shaft rotation angle to drive optical assembly slope, realize scanning angle's adjustment, be convenient for scan the determinand that is in different positions and angle, the flexibility reinforcing has solved the limited problem of scanning angle.

Description

Tiltable near-field scanning frame

Technical Field

The utility model relates to the technical field of antenna near field measurement, in particular to a tiltable near field scanning frame.

Background

In recent years, antenna near-field measurement technology has been rapidly developed, and each device and component required in an antenna measurement system also have quality matched with the antenna near-field measurement technology. The near-field scanning frame installed in the measuring system can be used for fixing the optical component and scanning the object to be measured at high speed, but in practical use, many scanning frames have problems:

the scanner frame sets up more and reciprocates so that carry out the adjustment of high position to optical scanning subassembly, but unable cooperation determinand slope scanning subassembly, scanning angle is limited, on the other hand is not convenient for carry out the higher back-and-forth movement of precision, need cooperate the manual work to use, degree of automation remains to be improved, if use ball carries out horizontal migration, the existence causes wearing and tearing because of the load, the problem of loss of precision, consequently need design a tiltable near field scanner frame, also can realize moving about from top to bottom when tiltable, wearing and tearing are less simultaneously.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a tiltable near field scanning frame, so as to solve the problems of the prior art that the tiltable near field scanning frame cannot be tilted and the scanning angle is limited.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a tilting near field scanning frame, includes installation base and base curb plate, the both sides fixedly connected with base curb plate of installation base, the guide bar is installed at the both ends of installation base, fixed case has the installation screw between the both sides of guide bar and the base curb plate, the outside activity of installation base has cup jointed the removal seat, the top fixedly connected with screw sleeve piece of removal seat, linear guide is installed on the top of screw sleeve piece, linear guide's top is provided with the guide rail driver, linear guide's one end is provided with the mobile station, the fixed station is installed to the one end of mobile station, two sets of ball screw have been cup jointed in the inside activity of screw sleeve piece, two sets of screw motors are installed to one side of base curb plate, screw motor's output passes through shaft coupling and ball fixed connection.

Preferably, the ball screws are arranged in two groups and are parallel to each other, and the ball screws are movably connected between the side plates of the base.

Preferably, a cylinder mounting groove has been seted up to the inside of fixed station, the internally mounted of cylinder mounting groove drives actuating cylinder, the output that drives actuating cylinder is provided with the piston rod, the top swing joint of piston rod has the fly leaf, the internally mounted of fly leaf has optical assembly, the edge of fixed station one end is provided with the articulated shaft, the fly leaf passes through articulated shaft and fixed station activity hinge joint.

Preferably, the fixed table is in an L shape, and the movable plate is turned over in a range of 0-90 degrees.

Preferably, fixed steel plates are installed at two ends of the inner wall of the movable seat, fixed screws are fixedly connected between the fixed steel plates and the movable seat, a rotating shaft is welded on the inner wall of each fixed steel plate, and rollers are movably sleeved outside the rotating shaft.

Preferably, the two ends of the inner wall of the movable seat are respectively provided with three groups of rollers, and the radian of the outer surface of each roller is matched with the curvature of each guide rod.

Preferably, the movable seat is in a shape like a Chinese character 'tu', and the two groups of guide rods are symmetrically distributed about the horizontal center line of the mounting base.

Compared with the prior art, the utility model has the beneficial effects that: the tiltable near-field scanning frame not only realizes tilting scanning and horizontal and vertical direction moving scanning, but also reduces precision loss;

(1) the linear guide rail, the guide rail driver, the moving platform, the driving air cylinder, the moving seat, the movable plate, the optical assembly and the articulated shaft are arranged, the driving air cylinder is started, the driving air cylinder ejects out the movable plate through the piston rod, the movable plate drives the optical assembly to incline through the overturning angle of the articulated shaft, the scanning angle is adjusted, objects to be detected at different positions and angles can be conveniently scanned, and the flexibility is enhanced;

(2) the linear guide rail is provided with a lead screw motor, a ball screw, a guide rail driver, a linear guide rail and a mobile platform, wherein the output end of the lead screw motor drives the ball screw to rotate through a coupler, so that a threaded sleeve block sleeved outside the ball screw is driven to do linear motion in the horizontal direction, the linear guide rail and an optical assembly are driven to horizontally move, the linear guide rail is driven to vertically move by the guide rail driver by improving driving force, and the mobile platform is driven to vertically move up and down, so that the lifting position of the optical assembly is adjusted, and therefore, the position movement in the horizontal direction and the vertical direction is realized, and the mobile scanning is carried out;

(3) through being provided with optical assembly, the screw thread cover block, remove the seat, gyro wheel and guide bar, because the load is limited, it easily makes the excessive friction installation base of removal seat to push down to remove seat axial force during screw thread cover block horizontal migration, consequently be provided with the gyro wheel that agrees with mutually with the guide bar at removal seat inner wall both ends, when removing the seat and removing the screw thread cover block, the gyro wheel turns into roll connection with sliding connection with the guide bar with sliding connection, reduce wearing and tearing, reduce the loss of precision, during routine maintenance, gyro wheel accessible fixed steel sheet and fixed screw split are changed.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a side view of the fixing table of the present invention;

FIG. 3 is a schematic side sectional view of the movable base according to the present invention;

fig. 4 is a schematic top view of the ball screw according to the present invention.

In the figure: 1. a rail driver; 2. a linear guide rail; 3. a mobile station; 4. a ball screw; 5. a lead screw motor; 6. a base side plate; 7. mounting screws; 8. a guide bar; 9. a movable seat; 10. fixing screws; 11. fixing a steel plate; 12. a rotating shaft; 13. a roller; 14. installing a base; 15. a threaded bushing block; 16. a movable plate; 17. an optical component; 18. hinging a shaft; 19. a piston rod; 20. a cylinder mounting groove; 21. a driving cylinder; 22. and a fixed platform.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, a tiltable near-field scanning frame comprises a mounting base 14 and base side plates 6, wherein the two sides of the mounting base 14 are fixedly connected with the base side plates 6, guide rods 8 are mounted at the two ends of the mounting base 14, mounting screws 7 are fixed between the two sides of the guide rods 8 and the base side plates 6, a movable base 9 is movably sleeved outside the mounting base 14, a threaded sleeve block 15 is fixedly connected to the top end of the movable base 9, a linear guide rail 2 is mounted at the top end of the threaded sleeve block 15, a guide rail driver 1 is arranged at the top end of the linear guide rail 2, a movable table 3 is arranged at one end of the linear guide rail 2, a fixed table 22 is mounted at one end of the movable table 3, two groups of lead screw motors 5 are mounted at one side of the base side plates 6, and the output ends of the lead screw motors 5 are fixedly connected with ball screws 4 through couplers;

the fixed table 22 is internally provided with an air cylinder installation groove 20, a driving air cylinder 21 is installed inside the air cylinder installation groove 20, the output end of the driving air cylinder 21 is provided with a piston rod 19, the top of the piston rod 19 is movably connected with a movable plate 16, an optical component 17 is installed inside the movable plate 16, the edge of one end of the fixed table 22 is provided with a hinge shaft 18, the movable plate 16 is movably hinged with the fixed table 22 through the hinge shaft 18, the fixed table 22 is L-shaped, and the turning range of the movable plate 16 is 0-90 degrees;

specifically, as shown in fig. 1 and fig. 2, the driving cylinder 21 is started, the driving cylinder 21 ejects the movable plate 16 through the piston rod 19, and the movable plate 16 is turned over through the hinge shaft 18, so that the optical assembly 17 is driven to incline, the scanning angle is adjusted, the object to be measured at different positions and angles can be conveniently scanned, and the flexibility is enhanced.

Example 2: two groups of ball screws 4 are movably sleeved in the threaded sleeve block 15, the ball screws 4 are arranged in two groups, the ball screws 4 are parallel to each other, the ball screws 4 are movably connected between the side plates 6 of the base, the movable seat 9 is in a convex shape, and the guide rods 8 are arranged in two groups and are symmetrically distributed about the horizontal central line of the mounting base 14;

specifically, as shown in fig. 1 and fig. 4, the output end of the screw motor 5 drives the ball screw 4 to rotate through the shaft coupling, thereby driving the thread sleeve block 15 sleeved outside the ball screw 4 to do linear motion in the horizontal direction, driving the linear guide rail 2 and the optical assembly 17 to realize horizontal movement, the linear guide rail 2 is driven by the guide rail driver 1 to improve the driving force to drive the mobile platform 3 to do upward and downward movement in the vertical direction, thereby realizing the adjustment of the lifting position of the optical assembly 17, therefore realizing the position movement in the horizontal and vertical directions, and performing the moving scanning.

Example 3: fixed steel plates 11 are mounted at two ends of the inner wall of the movable seat 9, fixed screws 10 are fixedly connected between the fixed steel plates 11 and the movable seat 9, a rotating shaft 12 is welded on the inner wall of each fixed steel plate 11, rollers 13 are movably sleeved outside the rotating shaft 12, three groups of rollers 13 are respectively arranged at two ends of the inner wall of the movable seat 9, and the radian of the outer surface of each roller 13 is matched with the curvature of the guide rod 8;

specifically, as shown in fig. 1, 3 and 4, due to the limited load, when the thread bushing block 15 moves horizontally, the axial force of the moving seat 9 is pressed down, so that the moving seat 9 can rub the mounting base 14 excessively, therefore, the rollers 13 matched with the guide rods 8 are arranged at the two ends of the inner wall of the moving seat 9, when the moving seat 9 moves along with the thread bushing block 15, the rollers 13 and the guide rods 8 convert the sliding connection into the rolling connection, the abrasion is reduced, the precision loss is reduced, and when the moving seat 9 is maintained daily, the rollers 13 can be detached and replaced through the fixed steel plates 11 and the fixed screws 10.

The working principle is as follows: when the scanning frame is used, the scanning frame is arranged in a scanning system, an object to be detected is accurately scanned and measured through an optical assembly 17, a lead screw motor 5 drives a ball screw 4 to rotate, so that a threaded sleeve block 15 sleeved outside the ball screw 4 is driven to do linear motion in the horizontal direction, a linear guide rail 2 and the optical assembly 17 are driven to horizontally move, the linear guide rail 2 is driven by a guide rail driver 1 to improve driving force to drive a moving platform 3 to vertically move up and down, so that the lifting position adjustment of the optical assembly 17 is realized, the position movement in the horizontal and vertical directions is realized, according to the position height difference of the object to be detected, a driving cylinder 21 pushes a movable plate 16 out for a certain distance through a piston rod 19, the movable plate 16 is turned over for an angle, the optical assembly 17 is driven to incline, the adjustment of a scanning angle is realized, and the object to be detected in different positions and angles can be conveniently scanned, because the load is limited, the axial force of the movable seat 9 is pressed down when the thread sleeve block 15 moves horizontally, so that the movable seat 9 is in friction installation with the base 14, the rollers 13 matched with the guide rods 8 are arranged at the two ends of the inner wall of the movable seat 9, and when the movable seat 9 moves along with the thread sleeve block 15, the rollers 13 and the guide rods 8 are in sliding connection to be in rolling connection, so that the abrasion is reduced, and the precision loss is reduced.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A tiltable near field gantry comprising a mounting base (14) and a base side plate (6), characterized in that: the device comprises an installation base (14), base side plates (6) fixedly connected to two sides of the installation base (14), guide rods (8) installed at two ends of the installation base (14), installation screws (7) fixed between two sides of the guide rods (8) and the base side plates (6), a movable base (9) sleeved on the outer portion of the installation base (14), a threaded sleeve block (15) fixedly connected to the top end of the movable base (9), a linear guide rail (2) installed on the top end of the threaded sleeve block (15), a guide rail driver (1) arranged on the top end of the linear guide rail (2), a movable table (3) arranged at one end of the linear guide rail (2), a fixed table (22) installed at one end of the movable table (3), two groups of ball screws (4) sleeved on the inner portion of the threaded sleeve block (15), and two groups of screw motors (5) installed on one side of the base side plates (6), the output end of the screw motor (5) is fixedly connected with the ball screw (4) through a coupler.

2. A tiltable near field gantry as claimed in claim 1, wherein: the ball screws (4) are arranged in two groups, the ball screws (4) are parallel to each other, and the ball screws (4) are movably connected between the base side plates (6).

3. A tiltable near field gantry as claimed in claim 1, wherein: cylinder mounting groove (20) have been seted up to the inside of fixed station (22), the internally mounted of cylinder mounting groove (20) has and drives actuating cylinder (21), the output that drives actuating cylinder (21) is provided with piston rod (19), the top swing joint of piston rod (19) has fly leaf (16), the internally mounted of fly leaf (16) has optical assembly (17), the edge of fixed station (22) one end is provided with articulated shaft (18), fly leaf (16) are through articulated shaft (18) and fixed station (22) swing joint.

4. A tiltable near field gantry as claimed in claim 3, wherein: the fixed table (22) is L-shaped, and the overturning range of the movable plate (16) is 0-90 degrees.

5. A tiltable near field gantry as claimed in claim 1, wherein: fixed steel sheet (11) are installed at the both ends of removing seat (9) inner wall, fixed steel sheet (11) and remove fixedly connected with fixed screw (10) between seat (9), the inner wall welding of fixed steel sheet (11) has pivot (12), gyro wheel (13) have been cup jointed in the outside activity of pivot (12).

6. A tiltable near field gantry as claimed in claim 5, wherein: three groups of rollers (13) are respectively arranged at two ends of the inner wall of the movable seat (9), and the radian of the outer surface of each roller (13) is matched with the curvature of the guide rod (8).

7. A tiltable near field gantry as claimed in claim 1, wherein: the movable seat (9) is in a convex shape, and the guide rods (8) are arranged in two groups and are symmetrically distributed about the horizontal center line of the mounting base (14).