CN115930741A - A clearance detection device for a large slewing bearing - Google Patents

Abstract

The invention discloses a gap detection device of a large slewing bearing, which comprises a detection platform and a support base which are arranged in parallel, wherein the detection platform is connected with the support base through a telescopic rod capable of being adjusted in a lifting manner; the angle motor is installed with the shaft base through the key shaft, gap detection is carried out after the clamping of multiple slewing bearing is fixed, through the flexible dial indicator of adjusting, axial, radial gap adjustment can be carried out to the slewing bearing of different bores, practical efficiency of detection equipment is improved and detection error is reduced.

Description

A clearance detection device for a large slewing bearing

technical field

The invention relates to the technical field of slewing bearing detection, in particular to a gap detection device for a large slewing bearing.

Background technique

The slewing bearing is a new type of mechanical component. It consists of inner and outer rings, rolling elements, etc. The slewing bearing is a large bearing that can bear comprehensive loads, and can simultaneously bear large axial and radial loads and overturning moments.

When the existing slewing bearings are used for gap detection, the outer ring (or inner ring) of the slewing ring is usually fixed first, and then the gap value is detected through the dial indicator. This kind of placement has the following problems:

1. The value of the detection gap is single, and only the value of the axial gap can be detected. For the value of the radial gap, due to the simple use of supporting tools and equipment, it is impossible to detect the heavy slewing bearing.

2. When detecting the gap, due to the simple use of supporting tools and equipment, it is impossible to ensure that the slewing bearing is placed on the horizontal plane for the level or verticality to be tested, and the use of the dial indicator cannot be placed perpendicular to the slewing bearing, resulting in a gap in the detection If the numerical error is too large, it will affect the numerical evaluation of the real clearance of the slewing bearing.

3. The use of supporting tools is single, and only one type of slewing bearing can be used for clearance detection, and it is impossible to realize the clearance detection of multiple types of slewing bearings, which increases the difficulty of detection. .

Contents of the invention

Aiming at the problems existing in the above-mentioned prior art, the present invention provides a large-scale slewing bearing gap detection device, which realizes accurate detection of the slewing The diameter of the inner ring or the structure of the inner surface realizes the gap detection after clamping and fixing various slewing bearings. Through the telescopic adjustment of the dial indicator, the axial and radial clearances of the slewing bearings of different diameters can be adjusted, which improves the detection Equipment practical efficiency and reduce detection error.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a gap detection device for a large slewing bearing, including a detection platform and a support base arranged in parallel, the detection platform and the support base are connected by a telescopic rod that can be adjusted up and down, The bottom of the support base is provided with rollers, and the middle part of the detection platform is opened as a rectangular opening. Angle motors and shaft bases are installed on the opposite sides of the detection platform. The angle motors are controlled by the control center to rotate forward or reverse every 90 degrees. The axial clearance value of the slewing bearing is detected horizontally, or the radial clearance value of the slewing bearing is detected vertically; the angle motor is installed through the key shaft and the shaft base, and the middle part of the rectangular opening is provided with a detection plate 1, a key shaft, a detection plate 1 and The rectangular opening is set coaxially, the key shaft runs through the detection board 1 horizontally, and the detection board 1 adjusts the angle with the rotation of the key shaft, and the center of the upper surface of the detection board 1 is provided with a boss 1, and the boss 1 is preferably a hexagonal column Shaped structure, telescopic rod 1 can be evenly installed on each surface, and a positioning assembly is installed at the end of the telescopic rod 1. The positioning assembly is in contact with the inner ring of the slewing bearing. The detection plate 1 is located in the axial direction of the key shaft. One limit slot, and two limit slots are symmetrically arranged with the boss one. When the detection plate one is in a vertical state, the limit slot one is coaxially arranged with the telescopic rod, and the telescopic rod is set in the limit slot one. Inside, keep the detection board one vertically placed, and use the dial gauge two set on the lower part of the detection board to detect the radial clearance of the slewing bearing;

Install and place the slewing bearing on the detection plate 1, and set a dial indicator 1 on one side of the slewing bearing. The detection end of the dial indicator 1 is in vertical contact with the rotation direction of the slewing bearing to detect the axial gap difference of the slewing bearing;

The end of the detection plate 1 along the diagonal direction is respectively provided with a limit slot 2, and the inner surface of the rectangular opening is horizontally opposite to the limit slot 2, and a telescopic rod 2 is installed. The end of the rod 2 is socketed inside the limit groove 2 to keep the detection board 1 placed horizontally. When the detection board 1 is in a horizontal state, install and place the slewing bearing on the detection board 1, and set it on one side of the slewing support. There is dial gauge 1, and the detection end of dial gauge 1 is in vertical contact with the rotation direction of the slewing bearing to detect the gap difference in the axial direction of the slewing bearing;

The side of the detection board one perpendicular to the axial direction of the key shaft is provided with a horizontal push assembly, and the upper part of the horizontal push assembly has a magnetic dial indicator 1. Magnetic attraction dial indicator 2.

Preferably, the positioning assembly includes a threaded part 1 that is threadedly connected with the telescopic rod 1, and the end of the telescopic rod 1 is provided with a threaded part 2, and the threaded part 1 and the threaded part 2 are threaded to realize detachable replacement. The opposite side of the rod one is set as a fixed shaft, and the opposite side of the fixed shaft and the threaded part one is set as an abutment.

Preferably, the abutting member is an arc-shaped surface of teeth or a soft abutting surface.

Preferably, the horizontal push assembly includes a slide rail fixedly connected to the detection platform, the upper part of the slide rail is slidably connected with a measurement support plate, and telescopic rods 3 are distributed on both sides of the slide rail, and the telescopic rod 3 is installed between the detection platform and the measurement support plate Between the three telescopic rods and between the three telescopic rods and the slide rails are all arranged in parallel, measure the magnetic attraction dial gauge 1 on the upper part of the support plate.

Preferably, the vertical push assembly includes two telescopic rods 4 vertically connected to the support base, the upper part of the telescopic rods 4 is sleeved with a mounting plate 1, and the side magnetic dial indicator 2 of the mounting plate 1 is sleeved.

Preferably, the middle part of the test board 1 is provided with a key connection hole penetrating through its body, and the key shaft is sleeved inside the key connection hole.

Preferably, a control center is provided on the surface of the support base to control the horizontal push assembly, the vertical push assembly and the angle motor.

Preferably, a level is clamped on one side of the detection platform.

To sum up, the present invention provides a large-scale slewing bearing gap detection device, which realizes the detection of slewing bearing gaps of different calibers, specifically the axial gap During detection, the slewing bearing is installed on the detection board 1, and the positioning assembly is driven to abut against the inner ring of the slewing bearing through the expansion and contraction of the telescopic rod, so as to realize the abutment and positioning of the slewing bearing. The second is socketed in the limit groove 2 to position the detection plate 1 horizontally. When the telescopic rod 3 pushes the dial gauge 1 to make vertical contact with the slewing bearing, rotate the outer ring of the slewing bearing to detect the axial clearance of the slewing bearing. Record the maximum deviation value and the minimum deviation value.

When detecting the radial clearance, after the control center controls the angle motor to rotate 90 degrees, observe the horizontal direction of the level gauge on the detection board 1, and then control the telescopic rod 2 to be socketed in the limit groove 1 to realize the vertical positioning of the slewing bearing. 4. Push dial gauge 2 to make vertical contact with the slewing bearing, rotate the outer ring of the slewing bearing, detect the radial clearance of the slewing bearing, and record the maximum and minimum deviation values.

Realized the switching detection of radial clearance detection and axial clearance detection, improved the efficiency of clearance detection and the accuracy of numerical detection; through the expansion and contraction adjustment of the telescopic rod 1, the clearance clearance of slewing bearings with different calibers can be adjusted, and through different positioning The use of components can abut and fix the tooth surface or smooth surface of the inner ring, and play a role in positioning the slewing bearing;

The dial indicator can detect the slewing gap of different calibers through the telescopic adjustment and setting of the telescopic rod, which solves the problem that only one type of slewing bearing can be tested for the gap, and it is impossible to realize the gap detection of multiple types of slewing bearings, which reduces the difficulty of detection;

Description of drawings

Fig. 1 is a structural schematic diagram of axial clearance detection of the present invention;

Fig. 2 is a structural schematic diagram of the radial clearance detection of the present invention;

Fig. 3 is a schematic structural view of the horizontal push assembly of the present invention;

Fig. 4 is a schematic structural view of the positioning assembly of the present invention;

Fig. 5 is a schematic structural view of the positioning assembly of the present invention;

Fig. 6 is a schematic diagram of the key connection hole structure of the present invention;

Fig. 7 is a schematic diagram of the second structure of the limiting groove of the present invention;

In the figure: positioning component 1, detection plate 11, boss 12, telescopic rod 13, threaded part 14, threaded part 2 141, abutting piece 15, key connection hole 16, limiting groove 12, limiting Slot two 3, horizontal push assembly 4, dial gauge one 41, slide rail 42, measuring support plate 43, telescopic rod three 44, vertical push assembly 5, dial gauge two 51, telescopic rod four 52, installation plate one 53, Detection platform 6, support base 61, rectangular opening 62, angle motor 63, shaft base 64, key shaft 65, control center 611, level 612.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1 to Figure 7:

The present invention is a gap detection device for a large slewing bearing, as shown in Figure 1-2, which includes a detection platform 6 and a support base 61 arranged in parallel, and a telescopic rod that can be adjusted up and down between the detection platform 6 and the support base 61 connected, the bottom of the support base 61 is provided with rollers, the middle part of the detection platform 6 is opened as a rectangular opening 62, the opposite sides of the detection platform 6 are distributed with angle motors 63 and shaft bases 64, and the angle motors 63 control each Rotate 90 degrees forward or turn over once, which is convenient for horizontally detecting the axial clearance value of the slewing bearing, or vertically detecting the radial clearance value of the slewing bearing; The detection board 11 is provided, the key shaft 65, the detection board 11 and the rectangular opening 62 are arranged coaxially, the key shaft 65 runs through the detection board 11 horizontally, and the detection board 11 performs angle adjustment as the key shaft 65 rotates, and the detection The center of the upper surface of the plate-11 is provided with a boss-12. The boss-12 preferably has a hexagonal columnar structure, and a telescopic rod-13 can be evenly arranged on each face. The circumferential direction of the boss-12 is uniform. A telescopic rod 13 is arranged, and a positioning assembly 1 is installed at the end of the telescopic rod 13. The positioning assembly 1 abuts against the inner ring of the slewing bearing. 2. The two limit grooves are arranged symmetrically with the boss one 12. When the detection plate one 11 is in a vertical state, the limit groove one 2 is set coaxially with the telescopic rod one 13, and the telescopic rod one 13 is socketed in the limit groove one 2, keep the detection board 11 vertically placed, and use the dial indicator 2 51 set at the lower part of the detection board 11 to detect the radial clearance of the slewing bearing;

Install and place the slewing bearing on the detection plate 11, and set a dial indicator 41 on one side of the slewing bearing. The detection end of the dial indicator 41 is in vertical contact with the rotation direction of the slewing bearing to detect the gap difference in the axial direction of the slewing bearing. ;

As shown in Figures 1, 2, and 7, the end of the detection plate 11 along the diagonal direction is respectively provided with a limit groove 2 3, and the inner surface of the rectangular opening 62 is horizontally opposite to the limit groove 2 3, and a telescopic rod 2 31 is installed. , the limit groove two 3 and the telescopic rod two 31 are coaxially arranged, and the end of the telescopic rod two 31 is sleeved inside the limit groove two 3 to keep the detection board one 11 placed horizontally, and the detection board one 11 is in the In the horizontal state, the slewing bearing is installed on the detection plate 11, and a dial gauge 41 is arranged on one side of the slewing bearing. The detection end of the dial gauge 41 is in vertical contact with the rotation direction of the slewing bearing to detect the slewing bearing shaft. To the gap difference; detection plate one 11 and key shaft 65 axial vertical side is provided with horizontal push assembly 4, the upper magnetic suction dial gauge one 41 of the upper part of horizontal push assembly 4, the support base of detection plate one 11 vertical below The surface is provided with a vertical push assembly 5, and the upper magnetic attraction dial indicator 2 51 of the vertical push assembly 5.

In at least one embodiment, as shown in Figures 1, 4, and 5, in order to realize the abutting and positioning installation of the slewing bearing, the positioning assembly 1 includes a threaded part 14 that is threaded with the telescopic rod 13, and the telescopic rod 13 The end of the threaded part 141 is provided with threaded part 141, and the threaded part 14 is threadedly connected with the threaded part 2 141 to realize detachable replacement. The opposite side of part one 14 is set as abutment piece 15 .

In at least one embodiment, as shown in Fig. 4-5, in order to achieve positioning and abutment on the slewing ring, the inner ring of the slewing ring is provided with a smooth surface or a tooth surface. When the inner ring is set as a smooth surface, the abutment Part 15 is a soft abutment surface, and the material of the soft abutment surface is preferably rubber material. When the inner ring is set as a tooth surface, the abutment part 15 is an arc-shaped surface of teeth, so that the arc-shaped surface of the teeth and the teeth of the inner ring Butt-mount after face-to-face engagement.

In at least one embodiment, as shown in FIG. 3 , in order to realize the accurate measurement of the axial clearance of the slewing bearing, a horizontal push assembly 4 is provided. The horizontal push assembly 4 includes a slide rail 42 fixedly connected to the detection platform 6 . The slide rail 42 The upper part is slidably connected with a measuring support plate 43, and telescopic rods 3 44 are distributed on both sides of the slide rail 42. The telescopic rods 3 44 are installed between the detection platform 6 and the measuring support plate 43, and between the 44 and the slide rail 42 are all arranged in parallel, and measure the upper magnetic attraction dial indicator 41 of the support plate 43;

When measuring the axial clearance, the detection end of the dial indicator 141 is set perpendicular to the direction of motion of the slewing bearing, which can accurately detect the maximum and minimum errors in the axial direction of the slewing bearing.

In at least one embodiment, as shown in FIG. 2 . In order to realize the precise measurement of the radial clearance of the slewing bearing, a vertical push assembly 5 is provided. The vertical push assembly 5 includes two telescopic rods 4 52 vertically connected to the support base 61, and the upper part of the telescopic rod 4 52 is sleeved with a mounting plate 1 53 , the side magnetic attraction dial indicator 2 51 of the mounting plate 1 53;

Dial indicator 2 51 is vertically placed on the bottom of the slewing bearing to be tested, and the detection end of dial indicator 2 51 is set perpendicular to the direction of movement of the slewing bearing, which can accurately detect the maximum and minimum radial errors of the slewing bearing.

In at least one embodiment, as shown in FIG. 6 , in order to realize the stable installation of the key shaft 65 and the detection board-11, a key connection hole 16 penetrating through the body of the detection board-11 is opened in the middle of the detection board-11, and the inside of the key connection hole 16 is The key shaft 65 is sleeved to realize switching rotation between radial gap detection and axial gap detection, improving the convenience of detection.

In at least one embodiment, as shown in FIG. 2 , a control center 611 is provided on the surface of the support base 61 to control the horizontal push assembly 4 , the vertical push assembly 5 and the angle motor 63 .

In at least one embodiment, as shown in Fig. 1-2, after the slewing bearing is abutted and installed on the detection board 11, a level 612 is clamped on one side of the detection platform 6, and the slewing bearing can be adjusted intuitively. Being in the horizontal or vertical direction improves the accuracy of the slewing bearing detection.

The embodiments in the present invention are only used to illustrate the present invention, and do not constitute a limitation to the scope of the claims. Other substantially equivalent substitutions that can be thought of by those skilled in the art are within the protection scope of the present invention.

Claims (8)

1. A gap detection device for a large-scale slewing bearing, characterized in that it includes a detection platform (6) and a support base (61) arranged in parallel, and the detection platform (6) and the support base (61) can be adjusted by lifting The telescopic rod is connected, the bottom of the support base (61) is provided with rollers, the middle part of the detection platform (6) is provided with an angle motor (63) (62), and the relative two sides of the detection platform (6) are distributed with angle motors, Shaft base (64), angle motor is installed with shaft base (64) by key shaft (65), and the middle part of angle motor (63) (62) is provided with detection plate one (11), key shaft (65), detection Plate 1 (11) and angle motor (63) (62) are arranged coaxially, and the key shaft (65) runs through the detection plate 1 (11) horizontally, and the detection plate 1 (11) rotates with the key shaft (65) to make an angle Adjustment, the center of the upper surface of the detection plate one (11) is provided with a boss one (12), and the circumferential direction of the boss one (12) is evenly arranged with a telescopic rod one (13), and the end of the telescopic rod one (13) The positioning assembly (1) is installed, and the positioning assembly (1) abuts against the inner ring of the slewing bearing. The detection plate one (11) is located in the axial direction of the key shaft (65) and has two limit slots one (2), two The limit groove is symmetrically arranged with the boss one (12), and the detection plate one (11) is positioned at the end of the diagonal line to offer the limit groove two (3) respectively, and the inner surface of the angle motor (63) (62) and the limit Slot 2 (3) is horizontally oppositely installed with telescopic rod 2, and the end of telescopic rod 2 is sleeved in the inside of limiting slot 2 (3), and the detection plate 1 (11) is on the side perpendicular to the axial direction of the key shaft (65) A horizontal push assembly (4) is provided, a magnetic attraction dial indicator one (41) on the upper part of the horizontal push assembly (4), and a vertical push assembly (5) is arranged on the surface of the supporting base vertically below the detection board one (11), and the vertical push assembly (5) is vertically pushed The upper magnetic attraction dial indicator two (51) of assembly (5). 2. A clearance detection device for a large slewing bearing according to claim 1, characterized in that the positioning assembly (1) includes a threaded part one (14) threaded with the telescopic rod one (13), and the threaded part one (14) 14) The side opposite to the telescopic rod one (13) is set as a fixed shaft, and the side of the fixed shaft opposite to the threaded part one (14) is set as an abutment piece (15). 3. A gap detection device for a large slewing bearing according to claim 2, characterized in that the abutment member (15) is an arc-shaped surface of teeth or a soft abutment surface. 4. A gap detection device for a large slewing bearing according to claim 1, characterized in that the horizontal push assembly (4) includes a slide rail (42) fixedly connected to the detection platform (6), and the slide rail (42) The upper part of the slide rail (42) is slidingly connected with a measuring support plate (43), and the two sides of the slide rail (42) are distributed with three telescopic rods (44). The three telescopic rods (44) are installed between the detection platform (6) and the measuring support plate (43). Between, and between telescopic rod three (44) and between telescopic rod three (44) and slide rail (42) all be parallel setting, measure the top magnetic suction dial indicator one (41) of support plate (43). 5. A gap detection device for a large slewing bearing according to claim 1, characterized in that the vertical push assembly (5) includes two telescopic rods (52) vertically connected to the support base (61), telescopic The top of bar four (52) is socketed with mounting plate one (53), and the side magnetic suction dial gauge two (51) of mounting plate one (53). 6. A gap detection device for a large slewing bearing according to claim 1, characterized in that, the middle part of the detection plate one (11) is provided with a key connection hole (16) penetrating through its body, and the key connection hole (16) Internal socket key shaft (65). 7. A gap detection device for a large slewing bearing according to claim 1, characterized in that a control center (611) is provided on the surface of the support base (61) to control the horizontal pushing assembly (4), vertical pushing Assembly (5) and angle motor. 8. A gap detection device for a large slewing bearing according to claim 1, characterized in that a level (612) is clamped on one side of the detection platform (6).

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