Detection device for comprehensive runout and clearance of slewing bearing

Abstract

The utility model discloses a comprehensive runout and clearance detection device for a slewing bearing. The comprehensive runout and clearance detection device comprises a base, a gear positioning assembly and a tooth runout detection assembly, the gear positioning assembly comprises a pinion, a bearing, a locking screw and an inner diameter expansion pin; the tooth jump detection assembly comprises a first dial indicator, a first fixing rod, a sliding block, a spring, a shaft shoulder positioning screw, a guide rail and a positioning block. The guide rail is fixed on the base, the sliding block is connected with the guide rail, the positioning block is fixed on the guide rail, the spring is arranged between the sliding block and the positioning block, and the shaft shoulder positioning screw penetrates through the positioning block and the spring and then is connected with the sliding block. The flange end of the inner diameter expansion pin is fixedly connected with the sliding block, and the small gear is arranged on the inner diameter expansion pin in a sleeved mode through a bearing. The first fixing rod is connected with the positioning block, and the first dial indicator is installed on the first fixing rod. According to the utility model, tooth jump, axial run-out and radial run-out of the slewing bearing can be detected, and an axial gap and a radial gap of the slewing bearing can be detected, so that the detection efficiency of the slewing bearing is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the device of the comprehensive runout (tooth jump, shaft jump, diameter jump) and the clearance (axial clearance and radial clearance) of slewing bearing detection belongs to the technical field of detection. BACKGROUND

[0002] As an important basic element of engineering machinery and construction machinery, slewing bearing has been widely applied with the rapid development of host industries in recent decades, and is matched with excavators, tower cranes, automobile cranes and various hoists, and is also widely applied in light industry machinery, port machinery, metallurgical machinery, medical machinery, industrial robots, tunnel boring machines, stacker-reclaimers, amusement equipment, missile launchers, radars and the like.

[0003] Tooth jump (runout value of gear ring gear) is one of important standards for judging gear precision, and is the most conventional detection item after gear processing. If the roundness of gear circumferential surface exceeds the specified range of design requirement, assembly difficulty will occur in the assembly process, wear and noise will be increased in the use process, the service life of parts is reduced, the smooth operation and overall function of equipment are affected, and the risk of inducing safety accidents is greatly increased. In the detection process of slewing bearing, a tooth is measured one by one by using a measuring rod when tooth jump is detected, and the long detection time leads to low efficiency. SUMMARY

[0004] The utility model wants to solve the problem to provide a kind of slewing bearing comprehensive runout and clearance detection device, it can detect the tooth jump, axial runout, radial runout of slewing bearing, and can also detect the axial clearance, radial clearance of slewing bearing, improve the detection efficiency of slewing bearing.

[0005] The utility model slewing bearing comprehensive runout and clearance detection device, it includes base, gear positioning assembly, tooth jump detection component, tooth jump detection component is set in the side surface of gear positioning assembly;Gear positioning assembly includes pinion, bearing, locking screw, inner diameter expansion pin;Tooth jump detection component includes first dial gauge, first fixed link, sliding block, spring, shaft shoulder positioning screw, guide rail, positioning block;Guide rail is fixed on the top of base, sliding block is connected with guide rail, positioning block is fixed on the top of guide rail, spring is set between sliding block and positioning block, shaft shoulder positioning screw is connected with sliding block after passing through positioning block and spring;The flange end of inner diameter expansion pin is fixedly connected with sliding block, pinion is sleeved on inner diameter expansion pin by bearing, locking screw connects inner diameter expansion pin with sliding block;First fixed link is connected with positioning block, first dial gauge is installed on first fixed link, and its measuring rod is parallel with guide rail.

[0006] Further, the gear positioning assembly further comprises a connecting plate; when measuring the thick gear, the connecting plate is arranged between the inner diameter expansion pin and the sliding block, the connecting plate is fixedly connected with the sliding block, the flange end of the inner diameter expansion pin is fixedly connected with the connecting plate, and the inner diameter expansion pin is connected with the connecting plate through the locking screw.

[0007] Further, the gear positioning assembly further comprises a connecting plate; when measuring the thick gear, the connecting plate is arranged between the inner diameter expansion pin and the sliding block, the connecting plate is fixedly connected with the sliding block, the flange end of the inner diameter expansion pin is fixedly connected with the connecting plate, and the inner diameter expansion pin is connected with the connecting plate through the locking screw.

[0008] Further, the gear positioning assembly further comprises a connecting plate; when measuring the thick gear, the connecting plate is arranged between the inner diameter expansion pin and the sliding block, the connecting plate is fixedly connected with the sliding block, the flange end of the inner diameter expansion pin is fixedly connected with the connecting plate, and the inner diameter expansion pin is connected with the connecting plate through the locking screw.

[0009] Further, the gear positioning assembly further comprises a connecting plate; when measuring the thick gear, the connecting plate is arranged between the inner diameter expansion pin and the sliding block, the connecting plate is fixedly connected with the sliding block, the flange end of the inner diameter expansion pin is fixedly connected with the connecting plate, and the inner diameter expansion pin is connected with the connecting plate through the locking screw.

[0010] Further, the gear positioning assembly further comprises a connecting plate; when measuring the thick gear, the connecting plate is arranged between the inner diameter expansion pin and the sliding block, the connecting plate is fixedly connected with the sliding block, the flange end of the inner diameter expansion pin is fixedly connected with the connecting plate, and the inner diameter expansion pin is connected with the connecting plate through the locking screw.

[0011] Further, the gear positioning assembly further comprises a connecting plate; when measuring the thick gear, the connecting plate is arranged between the inner diameter expansion pin and the sliding block, the connecting plate is fixedly connected with the sliding block, the flange end of the inner diameter expansion pin is fixedly connected with the connecting plate, and the inner diameter expansion pin is connected with the connecting plate through the locking screw.

[0012] The detection device has the following advantages: 1. The first dial gauge can continuously detect the gear jump of the slewing bearing, and the detection is convenient and efficient; 2. The second dial gauge and the third dial gauge can detect the axial runout and the radial runout of the slewing bearing; 3. The second dial gauge and the third dial gauge can detect the axial clearance and the radial clearance of the slewing bearing; 4. Different structures of the connecting block can be replaced to realize the detection of thick gear slewing bearings or thin slewing bearings; 5. The inner diameter expansion pin can quickly replace the pinion to realize the detection of slewing bearings of different specifications; and 6. The device has simple structure, convenient loading and unloading, and strong replaceability. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the front view of the first structure of the detection device of the utility model.

[0014] Figure 2 is Figure 1 the top view of the utility model.

[0015] Figure 3 is the main view of the second structure of the detection device of the utility model.

[0016] Figure 4 is Figure 3 the plan view.

[0017] Figure 5 is the schematic view when the detection device of the utility model detects the comprehensive runout. DETAILED DESCRIPTION

[0018] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0019] Embodiment 1

[0020] From Figure 1 , Figure 2 , Figure 3 , Figure 4 It can be known that the comprehensive runout and gap detection device of slewing bearing, it includes base 13, gear positioning assembly, tooth jump detection assembly, tooth jump detection assembly is arranged at the side of gear positioning assembly;Gear positioning assembly includes pinion 4, bearing 5, locking screw 6, inner diameter expansion pin 7;Tooth jump detection assembly includes first dial gauge 1, first fixed rod 2, sliding block 8, spring 10, shaft shoulder positioning screw 11, guide rail 12, positioning block 16;Guide rail 12 is fixed on the upper surface of base 13, sliding block 8 is connected with guide rail 12, positioning block 18 is fixed on the upper surface of guide rail 12, spring 10 is arranged between sliding block 8 and positioning block 18, shaft shoulder positioning screw 11 is connected with sliding block 8 after passing through positioning block 16 and spring 10;The flange end of inner diameter expansion pin 7 is fixedly connected with sliding block 8, pinion 4 is sleeved on inner diameter expansion pin 7 through bearing 5, and locking screw 6 connects inner diameter expansion pin 7 with sliding block 8;First fixed rod 2 is connected with positioning block 16, and first dial gauge 1 is installed on first fixed rod 2, and the measuring rod thereof is parallel to guide rail 12.

[0021] Among them, pinion 4 and bearing 5 are bonded as a whole;The whole of pinion 4 and bearing 5 can be quickly replaced through inner diameter expansion pin 7 to detect different slewing bearings.

[0022] The position of first dial gauge 1 is adjusted to make the measuring head thereof contact with the side surface of sliding block 8, and the reading of dial gauge is zero when spring 10 is in a free state;In this way, when the gear of the slewing bearing to be detected meshes with pinion 4 and rotates, sliding block 8 moves to compress spring 10, and the reading of first dial gauge 1 also changes, so that the tooth jump of slewing bearing 19 is continuously detected, which is convenient and highly efficient.

[0023] Embodiment 2

[0024] From Figure 1 , Figure 2It can be known that the utility model discloses a detection device: gear positioning assembly still includes connecting plate 15, when measuring thick gear, connecting plate 15 sets up between inner diameter expansion pin 7 and sliding block 8, connecting plate 15 is fixedly connected with sliding block 8, the flange end of inner diameter expansion pin 7 is fixedly connected with connecting plate 15, locking screw 6 connects inner diameter expansion pin 7 with connecting plate 2.

[0025] When measuring thick gear, the function of connecting plate 15 is to increase the height between pinion 4 and base 13, so as to facilitate the detection of thick slewing bearing.

[0026] Example 3

[0027] From Figure 3 , Figure 4 It can be known that the utility model discloses a detection device: gear positioning assembly still includes connecting plate 15, when measuring thin gear, one end of connecting plate 15 is fixedly connected with sliding block 8, the other end is fixedly connected with the flange end of inner diameter expansion pin 7 outside base plate 13, locking screw 6 connects inner diameter expansion pin 7 with connecting plate 15.

[0028] When measuring thin gear, the function of connecting plate 15 is to form cantilever structure outside base plate 13, so as to reduce the height between pinion 4 and base 13, and facilitate the detection of thin slewing bearing.

[0029] Example 4

[0030] From Figure 1 , Figure 2 , Figure 3 , Figure 4 It can be known that the utility model discloses a detection device: gear positioning assembly still includes connecting plate 15, when measuring thin gear, one end of connecting plate 15 is fixedly connected with sliding block 8, the other end is fixedly connected with the flange end of inner diameter expansion pin 7 outside base plate 13, locking screw 6 connects inner diameter expansion pin 7 with connecting plate 15.

[0031] In order to avoid the shape of sliding block and connecting plate being too large to affect sliding, the elongated baffle 17 connected with connecting plate 15 is arranged, the position of first dial gauge 1 is adjusted to make the measuring head contact the side surface of baffle 17, and the reading of dial gauge is zero when the spring is in free state; in this way, when the gear of measured slewing bearing meshes with pinion 4 and rotates, the spring is compressed, and the reading of first dial gauge 1 also changes, so that the gear runout is continuously detected, and the detection is convenient and the efficiency is extremely high.

[0032] Example 5

[0033] From Figure 1 , Figure 2 , Figure 3 , Figure 4 It can be known that the utility model discloses a detection device: it still includes axial detection assembly and radial detection assembly, and the axial detection assembly and radial detection assembly are arranged front and back relative to gear positioning assembly.

[0034] The utility model discloses detection device can realize the measurement to the shaft jump, radial jump, axial clearance and radial clearance of slewing bearing through axial detection subassembly, radial detection subassembly, expand the detection range, further shorten the detection time, improve the detection efficiency.

[0035] Example 6

[0036] From Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 It can be known that the utility model discloses detection device: axial detection subassembly and radial detection subassembly structure are same, and detection subassembly includes folding connecting rod 3, universal bar 9, dial gauge 14, second fixed link 18;The lower end of universal bar 9 is connected through ball with the mounting seat on bottom plate 13, and the upper end is connected with one end of folding connecting rod 3;Folding connecting rod 3 is formed by the hinge connection of multiple adjacent small rods, and the other end of folding connecting rod 3 is fixedly connected with second fixed link 1, and dial gauge 14 is connected with second fixed link 18;One of two dial gauges 14 is axial detection dial gauge, namely second dial gauge 141, and the other is radial detection dial gauge, namely third dial gauge 142.

[0037] Dial gauge 14 is locked on second fixed link 18 through dial hoop;Universal bar 9 can realize the rotation in a certain range through the ball of lower end, to make the measuring head of dial gauge 14 with a suitable position and rest on the arbitrary surface of slewing bearing, to carry out corresponding measurement and obtain relevant data.

[0038] For example Figure 5The method for detecting by using the detection device is shown as follows: firstly, the detection device and the slewing bearing 19 to be detected are placed on a water platform, and then the gear of the slewing bearing 19 to be detected is engaged with the gear on the detection device, I, rotating the slewing bearing gear ring to detect the following runout: when the gear ring has radial runout, the gear of the gear ring drives the pinion 4 to also have radial runout, and then the connecting plate 15 and the baffle 17 move together with the slider 8 to the direction of the first dial gauge 1, so that the baffle 17 extrudes the measuring head of the first dial gauge 1 to change the reading of the first dial gauge 1, and the reading of the first dial gauge 1 is the tooth jump value of the slewing bearing (the runout value of the gear of the slewing bearing gear ring), and the tooth jump value can be continuously obtained with the rotation of the gear, so that the detection is convenient and the efficiency is extremely high; the position of the second dial gauge 141 is adjusted so that the measuring head of the second dial gauge 141 is pressed on the end face of the outer ring 191 (the inner ring 192) of the slewing bearing, and the reading of the second dial gauge is the axial runout value of the slewing bearing; the position of the third dial gauge 142 is adjusted so that the pointer of the third dial gauge 142 is pressed on the tooth step outer ring 193 of the slewing bearing, and the reading of the third dial gauge is the radial runout value of the slewing bearing; II, measuring the gap: the position of the second dial gauge 141 is adjusted so that the pointer of the second dial gauge 141 is pressed on the end face of the outer ring 191 (the inner ring 192) of the slewing bearing, and the outer ring (the inner ring) of the slewing bearing is lifted and pressed down, and the reading of the second dial gauge is the axial gap; the position of the third dial gauge 142 is adjusted so that the pointer of the third dial gauge 142 is pressed on the outer circle of the outer ring (the inner hole of the inner ring) of the slewing bearing, and the outer ring (the inner ring) of the slewing bearing is pushed and pulled, and the reading of the third dial gauge is the radial gap.

[0039] The detection device has the following advantages: I, the tooth jump of the slewing bearing can be continuously detected by the first dial gauge 1, and the detection is convenient and the efficiency is extremely high; II, the axial runout and the radial runout of the slewing bearing can be detected by the second dial gauge 141 and the third dial gauge 142; III, the axial gap and the radial gap of the slewing bearing can be detected by the second dial gauge 141 and the third dial gauge 142; IV, the detection of thick gear slewing bearings or thin slewing bearings can be realized by replacing the connecting blocks 15 with different structures; V, the detection of slewing bearings with different specifications can be realized by quickly replacing the pinions 4 by the inner diameter expansion pin 7; VI, the device has simple structure, is convenient to assemble and disassemble, and has strong replaceability.

[0040] In summary, the detection device can detect the tooth jump, the axial runout, the radial runout, the axial gap and the radial gap of the slewing bearing, so that multiple data can be detected by using one device, the problem of low detection efficiency of the slewing bearing is solved, and the detection efficiency of the slewing bearing is improved.

Claims

1. A device for detecting the combined runout and play of a slewing bearing, characterized in that: It includes base (13), gear positioning assembly, gear jump detection assembly, gear jump detection assembly is arranged in the side of gear positioning assembly; Gear positioning assembly includes pinion (4), bearing (5), locking screw (6), inner diameter expansion pin (7); Gear jump detection assembly includes first dial gauge (1), first fixed rod (2), sliding block (8), spring (10), shaft shoulder positioning screw (11), guide rail (12), positioning block (16); Guide rail (12) is fixed on the top of base (13), sliding block (8) is connected with guide rail (12), positioning block (16) is fixed on the top of guide rail (12), spring (10) is arranged between sliding block (8) and positioning block (16), shaft shoulder positioning screw (11) is connected with sliding block (8) after passing through positioning block (16) and spring (10); The flange end of inner diameter expansion pin (7) is fixedly connected with sliding block (8), pinion (4) is sleeved on inner diameter expansion pin (7) through bearing (5), and locking screw (6) connects inner diameter expansion pin (7) and sliding block (8); First fixed rod (2) is connected with positioning block (16), and first dial gauge (1) is installed on first fixed rod (2), and the measuring rod thereof is parallel to guide rail (12).

2. The detection device of claim 1, wherein: The gear positioning assembly further comprises a connecting plate (15); when measuring a thick gear, the connecting plate (15) is arranged between the inner diameter expansion pin (7) and the sliding block (8), the connecting plate (15) is fixedly connected with the sliding block (8), the flange end of the inner diameter expansion pin (7) is fixedly connected with the connecting plate (15), and the locking screw (6) connects the inner diameter expansion pin (7) and the connecting plate (15).

3. The detection device of claim 1, wherein: The gear positioning assembly further comprises a connecting plate (15), when measuring a thin gear, one end of the connecting plate (15) is fixedly connected with the sliding block (8), the other end extends out of the base (13) and is fixedly connected with the flange end of the inner diameter expansion pin (7), and the locking screw (6) connects the inner diameter expansion pin (7) and the connecting plate (15).

4. The detection device according to claim 2 or 3, characterized in that: The gear jump detection assembly further comprises a baffle (17), the baffle (17) is connected with the connecting plate (15) and extends towards the first dial gauge (1), and the measuring head of the first dial gauge (1) is in contact with the side surface of the baffle (17).

5. The detection device of claim 1, wherein: It further comprises an axial detection assembly and a radial detection assembly, and the axial detection assembly and the radial detection assembly are arranged in front of and behind the gear positioning assembly.

6. The detection device of claim 5, wherein: The axial detection assembly and the radial detection assembly have the same structure, and the detection assembly comprises a folding connecting rod (3), a universal rod (9), a dial gauge (14) and a second fixed rod (18); The lower end of the universal rod (9) is connected with the mounting seat on the base (13) through a ball, and the upper end is connected with one end of the folding connecting rod (3); The folding connecting rod (3) is composed of a plurality of adjacent small rods which are hingedly connected with each other, the other end of the folding connecting rod (3) is fixedly connected with the second fixed rod (18), and the dial gauge (14) is connected with the second fixed rod (18); One of the two dial gauges (14) is an axial detection dial gauge, i.e., a second dial gauge (141), and the other is a radial detection dial gauge, i.e., a third dial gauge (142).

7. The detection device of claim 1, wherein: The pinion (4) and the bearing (5) are bonded as a whole.

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