Bearing axial clearance detection device

Abstract

The utility model relates to the technical field of bearing detection, and specifically discloses a bearing axial clearance detection device comprising a measuring assembly, a fixing assembly used for fixing an outer ring of a bearing to be detected, a movable assembly used for fixing an inner ring of the bearing to be detected and moving up and down along the fixing assembly, and a lever mechanism. The lever mechanism comprises a lever rotating around a fulcrum and extending to the position under the movable assembly, a reversing wheel, a counterweight assembly connected to a lever power arm and a rotating pin connecting a lever resisting arm and the movable assembly. The counterweight assembly comprises a balancing weight and a rope, wherein one end of the rope is connected with the balancing weight, and the other end of the rope bypasses the reversing wheel and is connected to the lever power arm. According to the utility model, the balance weight assembly is adopted to apply force, so that the measuring force is constant, the phenomenon of inaccurate measurement caused by uncertain stress factors such as non-uniform force application or different force application in the traditional manual pressing measurement is eliminated, the labor intensity is reduced, and the accuracy is improved; the weight of the weight is reduced through the lever principle, and meanwhile the bearing stress is large.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing detection technical field, concretely relates to a bearing axial play detection device. BACKGROUND

[0002] At present, the play of four-point contact ball bearing is axial play, when the inner and outer rings are nested, the axial play needs to be detected, the detection of axial play usually has two kinds of special axial play detector and manual detection, the price of special axial play detector is relatively expensive, and four-point contact ball bearing is in the early research and development stage and generally adopts manual detection, the conventional manual detection is fixed with the outer ring, and the axial play is measured by pressing the inner ring with hand, when the inner ring is moved with hand, the force size and direction of each person are different, so that the measured value is different, there is a great unstable factor, and in the process of moving with hand, the hand is damaged to different degrees if the number of repetitions is large. UTILITY MODEL CONTENT

[0003] The utility model discloses a bearing axial play detection device, improves the stability and precision of measurement, and reduces the labor intensity simultaneously.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] A bearing axial play detection device, including measurement subassembly, the fixed component for fixing the outer ring of the bearing to be detected, the movable component for fixing the inner ring of the bearing to be detected and moving up and down along the fixed component and the lever mechanism acting on the movable component, the lever mechanism includes the lever rotating around the fulcrum and stretching to the movable component just below, the reversing wheel fixed immovably in the shaft position and the counterweight assembly connected on the lever power arm and the rotating pin connecting the lever resistance arm and the movable component, the counterweight assembly includes the counterweight block and the rope connecting the counterweight block in one end and connecting to the lever power arm in the other end, the measurement subassembly is used for detecting the axial movement of the movable component.

[0006] Preferably, the measurement subassembly includes the table frame and the measurement table installed on the table frame, and the measurement head of the measurement table abuts against the top of the movable component.

[0007] Preferably, the measurement table is a dial gauge or a micrometer.

[0008] Preferably, the reversing wheel is rotatably installed on the reversing plate, and the reversing plate is fixedly installed on the fixed component or the measurement subassembly.

[0009] Preferably, the counterweight block is a weight.

[0010] Preferably, the resistance arm length from the connecting point between the rotating pin and the lever to the fulcrum is less than the power arm length from the connecting point between the rope and the lever to the fulcrum.

[0011] Preferably, the fixed assembly comprises a fixed base and an outer ring pressing cover, the fixed base has an outer ring supporting portion on the top for supporting the outer ring of the bearing to be measured, the fixed base has an axial hole and a radial hole communicating with the axial hole, the outer ring pressing cover is detachably connected with the fixed base through a first fastener, and the outer ring of the bearing to be measured is kept still by being limited by the outer ring pressing cover and the outer ring supporting portion in the detection state.

[0012] Preferably, a supporting shaft is mounted in the radial hole of the fixed base, and the lever is rotatably mounted on the supporting shaft through a supporting bearing, and the supporting shaft serves as the fulcrum of the lever.

[0013] Preferably, the movable assembly comprises a movable block and an inner ring pressing cover, the movable block is slidably connected with the fixed base and moves up and down on the axial hole, the movable block has an inner ring supporting portion on the top for supporting the inner ring of the bearing to be measured, the inner ring pressing cover is detachably connected with the movable block through a second fastener, and the inner ring pressing cover is located inside the outer ring pressing cover, and the inner ring of the bearing to be measured is pressed and arranged between the inner ring pressing cover and the movable block so that the inner ring pressing cover, the inner ring of the bearing to be measured and the movable block are combined together in the detection state.

[0014] Preferably, the second fastener has a bolt head, a light rod head section and a threaded tail section, the inner ring pressing cover has an axial through hole and a radial notch communicating with the axial through hole and having a width greater than the light rod head section, the movable block has a threaded mounting hole matched with the threaded tail section, and the normal projection of the bolt head on the inner ring pressing cover along the long axis direction of the light rod head section completely covers the axial through hole or partially overlaps with the axial through hole.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses a fixed assembly fixes the outer ring of the bearing to be measured and combines the inner ring of the bearing to be measured into a whole through a movable assembly, a counterweight assembly and a lever work on the movable assembly, the axial play of the bearing to be measured can be obtained by reading the data on the measuring assembly, the whole operation process is simple and convenient, and the operation can be operated without special skills, the measuring force is constant by using the counterweight assembly to exert force, the inaccuracy of measurement caused by the uncertain factors such as uneven force or different force in the traditional manual pressing measurement is eliminated, the labor intensity is reduced, and the measurement accuracy is improved, the bearing can bear larger force through the principle of the lever and the weight reduction of the counterweight, the direction conversion of the counterweight assembly on the movable assembly is easily realized through the reversing wheel, and the operation is more convenient and faster.

[0017] The utility model discloses detection device adopts modularization design, only needs to replace a few components such as inner ring gland and outer ring gland, can be applicable to different model bearing, improve its measuring equipment's applicability and the efficiency of the change of type, simple and convenient, and the processing cost is lower, avoid the high cost of special equipment purchase before new product research and development. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the detection device plan view of the utility model.

[0019] Figure 2 It is the detection device perspective view of the utility model.

[0020] Figure 3 It is Figure 2 The partial close -up view of A shown in the figure.

[0021] Figure 4 It is the detection device sectional view of the utility model.

[0022] Figure 5 It is Figure 4 The partial close -up view of B shown in the figure.

[0023] Mark in the figure: 11, fixed base; 12, outer ring gland; 13, radial hole; 14, support shaft; 21, movable block; 22, inner ring gland; 220, radial notch; 23, second fastener; 31, lever; 32, rotating pin; 33, counterweight; 34, reversing wheel; 35, reversing plate; 41, table stand; 42, measuring table. DETAILED DESCRIPTION

[0024] In order to let the above-mentioned features and advantages of the utility model more obvious easy to understand, the following specific example is taken, and the detailed description is as follows in cooperation with the drawings.

[0025] As Figures 1-5 Shown, the embodiment provides a bearing axial play detection device, including measuring assembly, the fixed assembly for fixing the outer ring of the bearing to be measured, the movable assembly for fixing the inner ring of the bearing to be measured and moving up and down along the fixed assembly and the lever mechanism acting on the movable assembly.

[0026] In the embodiment, the fixed assembly includes fixed base 11 and outer ring gland 12, the fixed base 11 has axial hole and the radial hole 13 that communicates with the axial hole, the axial hole corresponds to the shaft hole of the bearing to be measured and is used to install movable assembly and the space for the movable assembly and the inner ring of the bearing to be measured to move up and down, and the radial hole 13 is used to install lever mechanism and enable external force to act on movable assembly through lever mechanism.

[0027] In the embodiment, the movable assembly comprises a movable block 21 and an inner ring pressing cover 22, the movable block 21 is in sliding fit with the fixed base 11 and moves up and down in the axial hole, in particular, the movable block 21 is shaped to be matched with the axial hole of the fixed base 11, the movable block 21 is in sliding fit with the axial hole, and the axial hole guides the up and down movement of the movable block 21 to ensure that the inner ring of the bearing to be detected moves axially relative to the outer ring during the detection of the axial clearance.

[0028] The fixed base 11 has an outer ring support portion at the top for supporting the outer ring of the bearing to be detected, the outer ring pressing cover 12 is detachably connected with the fixed base 11 through the first fastener; the movable block 21 has an inner ring support portion at the top for supporting the inner ring of the bearing to be detected, the inner ring pressing cover 22 is detachably connected with the movable block 21 through the second fastener 23, and the inner ring pressing cover 22 is located inside the outer ring pressing cover 12, in the detection state, the outer ring of the bearing to be detected is kept stationary by the outer ring pressing cover 12 and the outer ring support portion, and the inner ring of the bearing to be detected is pressed between the inner ring pressing cover 22 and the movable block 21 so that the inner ring pressing cover 22, the inner ring of the bearing to be detected and the movable block 21 are combined together.

[0029] The second fastener 23 has a bolt head, a light pole head section and a threaded tail section, the inner ring pressing cover 22 has an axial through hole and a radial notch 220 which is in communication with the axial through hole and has a width greater than the light pole head section, the movable block 21 has a threaded mounting hole matched with the threaded tail section, the projection of the bolt head on the inner ring pressing cover 22 along the long axis direction of the light pole head section completely covers the axial through hole or partially overlaps with the axial through hole, when the bearing to be detected is placed, the force of the counterweight assembly is released, the inner ring pressing cover 22 is taken out through the radial notch 220, the bearing to be detected is placed on the fixed base 11 and the outer ring is locked on the fixed base 11 through the outer ring pressing cover 12, the inner ring pressing cover 22 with a suitable diameter is selected and pressed on the inner ring of the bearing to be detected, the second fastener 23 is tightened so that the movable block 21, the inner ring and the inner ring pressing cover 22 are combined together; when the test is completed and the bearing is taken out, the second fastener 23 is loosened to release the inner ring pressing cover 22, and then the inner ring pressing cover 22 is taken out along the radial notch 220, and the bearing can be taken out after the outer ring pressing cover 12 is removed.

[0030] In the embodiment, the measuring assembly is used to detect the moving amount of the movable assembly upwardly jacked, and the measuring assembly comprises a table frame 41 and a measuring table 42 installed on the table frame 41, and a measuring head of the measuring table 42 abuts against the top of the movable assembly. Specifically, the measuring table 42 is a dial gauge or a micrometer gauge, the measuring head abuts against the top of the second fastener 23 of the movable assembly and is calibrated to zero before force is applied, and when the inner ring of the bearing to be measured is lowered synchronously with the movable assembly, the measuring head of the measuring table 42 is also elongated downwardly, and then the axial moving amount of the inner ring of the bearing to be measured and the movable assembly downwardly can be read on the measuring table 42, so that the axial clearance of the bearing to be measured is obtained. It is to be noted that in other examples, the measuring assembly can also be replaced by a sensing measurement technology, which will not be described herein.

[0031] In the embodiment, the lever mechanism comprises a lever 31, a reversing wheel 34, a counterweight assembly and a rotating pin 32, a support shaft 14 is installed in the radial hole 13 of the fixed base 11, the lever 31 is rotatably installed on the support shaft 14 through a support bearing, a resistance arm of the lever 31 extends to the movable assembly directly below through the radial hole 13 and rotates up and down with the support shaft 14 as a fulcrum, and a power arm of the lever 31 is located outside the fixed base 11.

[0032] One end of the reversing plate 35 is fixedly installed on the fixed base 11 through a screw, the reversing plate 35 is arranged obliquely so that the other end of the reversing plate 35 is higher than the highest point of the power arm of the lever 31, and the reversing wheel 34 is rotatably installed on the reversing plate 35 so that the shaft position of the reversing wheel 34 is fixed. The reversing wheel 34 changes the force of the counterweight assembly, the lever 31 pulls the movable assembly and the inner ring of the bearing to be measured downwardly when force is applied, and the reversing wheel 34 can be a fixed pulley or a reversing rod rotatably installed on the reversing plate 35 and provided with a winding groove matched with the rope.

[0033] The counterweight assembly comprises a counterweight block 33 and a rope with one end connected to the counterweight block 33 and the other end passing through the reversing wheel 34 and connected to the power arm of the lever 31, the counterweight block 33 is a weight, and the connection mode of the counterweight block 33 and the rope is preferably a hook and a hanging hole mode; the resistance arm of the lever 31 is provided with a pin hole at a position corresponding to the bottom of the movable block 21, and the rotating pin 32 is inserted and fixed in the pin hole to realize the connection of the rotating pin 32, the resistance arm of the lever 31 and the movable assembly, and when the power arm of the lever 31 is lifted by the counterweight assembly, the resistance arm of the lever 31 and the rotating pin 32 pull the movable assembly and the inner ring of the bearing to be measured downwardly. The resistance arm length from the connecting point between the rotating pin 32 and the lever 31 to the fulcrum is smaller than the power arm length from the connecting point between the rope and the lever 31 to the fulcrum, so that the weight of the counterweight block 33 is reduced and the force applied to the inner ring of the bearing to be measured is relatively large.

[0034] The basic principle, main features and advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A bearing axial clearance detection device, characterized in that: The device includes a measuring component, a fixing component for fixing the outer ring of the bearing under test, a movable component for fixing the inner ring of the bearing under test and moving up and down along the fixing component, and a lever mechanism acting on the movable component. The lever mechanism includes a lever that rotates around a fulcrum and extends directly below the movable component, a reversing wheel whose axis position is fixed, a counterweight component connected to the lever power arm, and a rotating pin connecting the lever resistance arm and the movable component. The counterweight component includes a counterweight block and a rope with one end connected to the counterweight block and the other end passing around the reversing wheel and connected to the lever power arm. The measuring component is used to detect the downward axial movement of the movable component.

2. The bearing axial clearance detection device according to claim 1, characterized in that: The measuring component includes a frame and a measuring meter mounted on the frame, with the measuring head of the measuring meter abutting the top of the movable component.

3. The bearing axial clearance detection device according to claim 2, characterized in that: The measuring instrument is a dial indicator or a micrometer.

4. The bearing axial clearance detection device according to claim 1, characterized in that: The reversing wheel is rotatably mounted on the reversing plate, and the reversing plate is fixedly mounted on the fixing assembly or the measuring assembly.

5. The bearing axial clearance detection device according to claim 1, characterized in that: The counterweight is a weight.

6. The bearing axial clearance detection device according to claim 1, characterized in that: The resistance arm length from the connection point between the rotating pin and the lever to the fulcrum is less than the effort arm length from the connection point between the rope and the lever to the fulcrum.

7. The bearing axial clearance detection device according to claim 1, characterized in that: The fixing assembly includes a fixing base and an outer ring cover. The top of the fixing base has an outer ring support portion that supports the outer ring of the bearing under test. The fixing base has an axial hole and a radial hole that communicates with the axial hole. The outer ring cover and the fixing base are detachably connected by a first fastener. In the testing state, the outer ring of the bearing under test is restricted and kept stationary by the outer ring cover and the outer ring support portion.

8. The bearing axial clearance detection device according to claim 7, characterized in that: A support shaft is installed in the radial hole of the fixed base, and the lever is rotatably mounted on the support shaft through a support bearing. The support shaft serves as the fulcrum of the lever.

9. The bearing axial clearance detection device according to claim 7, characterized in that: The movable component includes a movable block and an inner ring cover. The movable block is slidably fitted with a fixed base and moves up and down in an axial hole. The top of the movable block has an inner ring support portion that supports the inner ring of the bearing under test. The inner ring cover and the movable block are detachably connected by a second fastener, and the inner ring cover is located inside the outer ring cover. In the testing state, the inner ring of the bearing under test is pressed between the inner ring cover and the movable block, so that the inner ring cover, the inner ring of the bearing under test, and the movable block are combined together.

10. The bearing axial clearance detection device according to claim 9, characterized in that: The second fastener has a bolt head, a smooth head section and a threaded tail section. The inner ring cover has an axial through hole and a radial notch that is connected to the axial through hole and has a width greater than that of the smooth head section. The movable block has a threaded mounting hole that matches the threaded tail section. The orthographic projection of the bolt head along the long axis of the smooth head section on the inner ring cover completely covers the axial through hole or partially overlaps with the axial through hole.

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