Axial clearance detection device for combined bearing with two single-row tapered rollers

Abstract

The utility model discloses a device for detecting the axial clearance of a combined bearing with two single-row tapered rollers, which relates to the field of tapered roller bearing detection and comprises a combined bearing which is locked on a mandrel fixing plate after a mandrel is sleeved at the center of the combined bearing; the mandrel fixing plate is installed on the bottom plate in an embedded mode, the ejector rod fixing plate is arranged below the bottom plate, and the ejector rod is arranged between the ejector rod fixing plate and the mandrel fixing plate in a penetrating mode. One end of the first stress application assembly is supported on the bottom plate, the other end is provided with an upper pressing block, and a loading force from bottom to top is applied to the outer ring of the lower bearing through an ejector rod; one end of the second stress application assembly is supported on the bottom plate, the other end of the second stress application assembly penetrates through the bottom plate and then is movably connected with a lower pressing block mounting rod, and a lower pressing block is mounted on the lower pressing block mounting rod; the dial indicator abuts against one end of the dial indicator connecting rod, and the other end of the dial indicator connecting rod penetrates into the lower pressing block. According to the utility model, the detection cost is reduced, the detection steps are simplified, and the purposes of efficient and accurate measurement are achieved.

Description

Technical Field

[0001] The utility model relates to the field of tapered roller bearing detection, in particular to an axial clearance detection device for two single-row tapered roller combined bearings. Background Art

[0002] like Figure 1 As shown: rollers (4') are held between the outer ring (1') and the inner ring (3') by a cage (2'), and a spacer ring (5') is arranged between the two sets of inner rings.

[0003] T: finished product width dimension of a single set of tapered roller bearings;

[0004] B: The inner ring width of a single set of tapered roller bearings;

[0005] H: Width of the inner spacer;

[0006] △: The clearance size between two single-row tapered roller bearings and spacer rings after fitting together;

[0007] It can be seen from the figure: Δ = H-(T1-B1)-(T2-B2) (Formula 1)

[0008] Measurement and calculation method: According to calculation formula 1, the width of the spacer ring, the width of the finished product, and the width of the inner ring are detected respectively, and the value of the clearance size after the two single-row tapered roller bearings and the spacer rings are assembled is obtained through calculation.

[0009] However, when using the above measurement and calculation method to detect the clearance size of two single-row tapered roller bearings and spacers after they are assembled, two values ​​must be detected for each set of bearings, and the detection is performed twice, and the height of the spacer is detected once. In addition, during the mass production process, the two detection data of the same set of bearings and the height of the spacer must correspond, otherwise the measurement results will be wrong. The workload is large, it is easy to make mistakes, the detection error is large, and it is not suitable for mass product detection. Utility Model Content

[0010] The utility model aims to overcome the shortcomings of the prior art and provide an axial clearance detection device for two single-row tapered roller combined bearings to reduce the detection cost and simplify the detection steps. By measuring with the detection method, the purpose of efficient and accurate measurement can be achieved.

[0011] The purpose of the utility model is achieved through the following technical solutions: This two-single-row tapered roller combined bearing axial clearance detection device includes:

[0012] A combined bearing comprises an upper bearing, a lower bearing, a bearing spacer disposed between the inner rings of the two bearings, and a standard outer spacer disposed between the outer rings of the two bearings. The combined bearing is centrally sleeved with a mandrel and locked on a mandrel fixing plate.

[0013] The bottom plate is supported on the ground by a plurality of columns, the mandrel fixing plate is embedded in the bottom plate, a push rod fixing plate is arranged at a position corresponding to the mandrel fixing plate below the bottom plate, a plurality of push rods are passed between the push rod fixing plate and the mandrel fixing plate, one end of the push rod is fixed on the push rod fixing plate, and the other end of the push rod is used to push against the outer ring of the lower bearing;

[0014] A first force-applying component, one end of which is supported on the bottom plate, and an upper pressing block is installed on the other end of the first force-applying component, which is used to press the outer ring of the upper bearing and apply a loading force from bottom to top to the outer ring of the lower bearing through a push rod;

[0015] A second force-applying component, one end of which is supported on the bottom plate, and the other end of which penetrates through the bottom plate and is movably connected to a lower pressing block mounting rod, the other end of the lower pressing block mounting rod is supported on the bottom plate, and the lower pressing block is mounted on the lower pressing block mounting rod; and

[0016] The dial gauge connecting rod is connected to the dial gauge support column in a relatively rotatable manner at its center. The dial gauge support column is fixedly supported on the base plate. The dial gauge is penetrated through the base plate, and the head of the dial gauge is against one end of the dial gauge connecting rod. The other end of the dial gauge connecting rod penetrates into the lower pressure block and is fixed on the top rod fixing plate.

[0017] As a further technical solution, the first force-applying component includes an upper pressure block connecting rod, one end of the upper pressure block connecting rod is hinged on the upper pressure block support column, the upper pressure block support column is fixed on the base plate, the other end of the upper pressure block connecting rod is slidingly sleeved with a first load block, the upper pressure block is hinged on the upper pressure block connecting rod between the first load block and the upper pressure block support column, and a force pad is installed at the lower end of the upper pressure block for tightening the outer ring of the upper bearing.

[0018] As a further technical solution, the second force-applying component includes a load block connecting rod, one end of the load block connecting rod is hinged on the lower pressure block connecting rod, and a lower pressure block joint is installed at the lower end of the lower pressure block connecting rod for hingedly connecting the lower pressure block mounting rod; the other end of the load block connecting rod is slidingly sleeved with a second load block, and an assembly column is hinged on the load block connecting rod between the second load block and the lower pressure block connecting rod, and the assembly column is fixed on the base plate.

[0019] As a further technical solution, the lower pressing block mounting rod is hinged to the lower end of the lower pressing block supporting column through a pin, and the upper end of the lower pressing block supporting column is fixed to the bottom plate.

[0020] As a further technical solution, the lower portion of the lower pressing block is hinged on the lower pressing block mounting rod through a pin, and a slot is provided on the upper portion of the lower pressing block for inserting a dial gauge connecting rod.

[0021] As a further technical solution, a screw is passed through the center of the core shaft, a washer is arranged on the top of the core shaft, and the screw locks the washer and the upper bearing with a clamping nut.

[0022] As a further technical solution, a plurality of guide pins are inserted between the push rod fixing plate and the core shaft fixing plate, and springs are sleeved on the outer circumference of the guide pins, and the springs are pressed between the bottom plate and the push rod fixing plate.

[0023] As a further technical solution, the push rod fixing plate is radially provided with sliding grooves corresponding to the number of push rods, and the sliding grooves are evenly distributed along the circumferential direction of the push rod fixing plate. Slide grooves are also provided at corresponding positions on the core shaft fixing plate and the bottom plate. The push rods pass through the slide grooves on the push rod fixing plate, the bottom plate and the core shaft fixing plate in turn, and the fixed position on the push rod fixing plate is adjusted according to the outer ring size of the combined bearing.

[0024] As a further technical solution, the micrometer support column passes through the base plate and is locked with a locking nut.

[0025] As a further technical solution, the dial gauge is locked on the base plate by a dial gauge locking bolt.

[0026] The beneficial effects of the utility model are:

[0027] 1. The standard outer spacer size C and axial clearance value Gr can be detected and calculated to obtain clear values, so the clearance size of two single-row tapered roller bearings and spacers after fitting can be indirectly obtained, and the result is more accurate;

[0028] 2. The prior art requires two inner ring height tests, two finished product height tests, and one spacer ring height test. The utility model combines them into two axial clearance tests. As long as the axial clearance value Gr is controlled during the test, the test workload can be effectively reduced and the test efficiency can be improved. At the same time, it can also avoid the drawback of incorrect measurement results caused by inconsistent test data, thus achieving the purpose of high efficiency and accuracy in mass production applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic diagram of the structure of two single-row tapered roller combination bearings in the prior art.

[0030] Figure 2 The cross-sectional structure of the utility model is shown in FIG. Figure 1 .

[0031] Figure 3 The cross-sectional structure of the utility model is shown in FIG. Figure 2 .

[0032] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0033] Figure 5 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0034] Figure 6 It is a structural schematic diagram of the combined bearing in the utility model.

[0035] Figure 7 It is a structural schematic diagram of the lower pressing block in the utility model.

[0036] Figure 8 It is a structural schematic diagram of the central shaft fixing plate of the utility model.

[0037] Fig. 9 It is a structural schematic diagram of the top rod fixing plate in the utility model.

[0038] Description of reference numerals: outer ring 1', cage 2', inner ring 3', roller 4', spacer 5';

[0039] The first load block 1, the upper pressure block connecting rod 2, the upper pressure block 3, the upper pressure block supporting column 4, the core shaft 5, the force pad 6, the washer 7, the clamping nut 8, the upper bearing 9, the core shaft fixing plate 10, the push rod 11, the locking nut 12, the bottom plate 13, the micrometer 14, the guide pin 15, the push rod fixing plate 16, the micrometer locking bolt 17, the micrometer connecting rod 18, the micrometer supporting column 19, the spring 20, the lower pressure block mounting rod 21, the column 22, the lower pressure block joint 23, the lower pressure block 24, the lower pressure block connecting rod 25, the assembly column 26, the lower bearing 27, the bearing spacer 28, the standard outer spacer 29, the lower pressure block supporting column 30, the load block connecting rod 31, the second load block 32, the slot 33, the slide groove 34. DETAILED DESCRIPTION

[0040] The utility model will be described in detail below with reference to the accompanying drawings:

[0041] Example: As attached Figures 2 to 9 As shown, the axial clearance detection device of the two single-row tapered roller combination bearings includes a first load block 1, an upper pressure block connecting rod 2, an upper pressure block 3, an upper pressure block supporting column 4, a core shaft 5, a force pad 6, a washer 7, a clamping nut 8, an upper bearing 9, a core shaft fixing plate 10, a push rod 11, a locking nut 12, a base plate 13, a micrometer 14, a guide pin 15, a push rod fixing plate 16, a micrometer locking bolt 17, a micrometer connecting rod 18, a micrometer supporting column 19, a spring 20, a lower pressure block mounting rod 21, a column 22, a lower pressure block joint 23, a lower pressure block 24, a lower pressure block connecting rod 25, an assembly column 26, a lower bearing 27, a bearing spacer 28, a standard outer spacer 29, a lower pressure block supporting column 30, a load block connecting rod 31, a second load block 32, a slot 33 and a slide groove 34.

[0042] Reference Figure 6 The upper bearing 9, the lower bearing 27, the bearing spacer 28 disposed between the inner rings of the two, and the standard outer spacer 29 disposed between the outer rings of the two together form a combined bearing. Figure 2 , 3 As shown, after the center of the combined bearing is sleeved with a core shaft 5, a screw is passed through the center of the core shaft 5, a washer 7 is set on the top of the core shaft 5, and the washer 7 is placed on the upper bearing 9. After the screw passes through the core shaft 5 and the washer 7 in turn, it is locked with a clamping nut 8, so that the combined bearing is locked on the core shaft fixing plate 10.

[0043] Furthermore, a column 22 is installed on each of the four corners of the bottom plate 13 to support the bottom plate 13 on the ground. A core shaft fixing plate 10 is embedded in the center of the bottom plate 13. A push rod fixing plate 16 is provided below the bottom plate 13 at a position corresponding to the core shaft fixing plate 10. Three push rods 11 are passed through the push rod fixing plate 16 and the core shaft fixing plate 10. One end of the push rod 11 is fixed to the push rod fixing plate 16 by a nut, and the other end of the push rod 11 is used to push against the outer ring of the lower bearing 27. Three guide pins 15 are passed through the push rod fixing plate 16 and the core shaft fixing plate 10. A spring 20 is sleeved on the outer circumference of each guide pin 15. The spring 20 is pushed between the bottom plate 13 and the push rod fixing plate 16. Preferably, as Figure 8 , 9 As shown, sliding grooves 34 corresponding to the number of ejector pins 11 are radially opened on the ejector pin fixing plate 16, and the sliding grooves 34 are evenly distributed along the circumferential direction of the ejector pin fixing plate 16. Sliding grooves 34 are also opened at corresponding positions on the core shaft fixing plate 10 and the bottom plate 13. The ejector pin 11 passes through the sliding grooves 34 on the ejector pin fixing plate 16, the bottom plate 13 and the core shaft fixing plate 10 in turn, and the fixed position on the ejector pin fixing plate 16 is adjusted according to the outer ring size of the combined bearing.

[0044] like Figure 4 , 5As shown, the first force-applying assembly includes an upper pressure block connecting rod 2, one end of which is hinged on the upper pressure block support column 4, which is fixed and supported on the bottom plate 13, and the other end of the upper pressure block connecting rod 2 is slidably sleeved with a first load block 1, and the upper pressure block 3 is hinged on the upper pressure block connecting rod 2 between the first load block 1 and the upper pressure block support column 4. A force pad 6 is installed at the lower end of the upper pressure block 3, and the force pad 6 is pressed against the outer ring of the upper bearing 9, and a loading force from bottom to top is applied to the outer ring of the lower bearing 27 through the push rod 11. Further, the second force-applying assembly includes a load block connecting rod 31, one end of which is hinged on the lower pressure block connecting rod 25, and after the lower pressure block connecting rod 25 passes through the bottom plate 13, a lower pressure block joint 23 is installed at its lower end and the lower pressure block mounting rod 21 is hinged. The other end of the lower pressing block mounting rod 21 is hinged to the lower end of the lower pressing block support column 30 by a pin, and the upper end of the lower pressing block support column 30 is fixedly connected to the bottom plate 13. The other end of the load block connecting rod 31 is slidably sleeved with a second load block 32, and an assembly column 26 is hinged on the load block connecting rod 31 between the second load block 32 and the lower pressing block connecting rod 25, and the assembly column 26 is fixed and supported on the bottom plate 13. The lower pressing block 24 is installed at the middle section of the lower pressing block mounting rod 21 (i.e., between the lower pressing block joint 23 and the lower pressing block support column 30). Preferably, the lower portion of the lower pressing block 24 is hinged to the lower pressing block mounting rod 21 by a pin, and a slot 33 is provided on the upper portion of the lower pressing block 24 for inserting the dial gauge connecting rod 18.

[0045] Reference Figure 2 The center of the dial gauge connecting rod 18 is relatively rotatably connected to the dial gauge support column 19. After the dial gauge support column 19 passes through the bottom plate 13, it is locked on the bottom plate 13 with a locking nut 12. The dial gauge 14 is inserted into the bottom plate 13, and the head of the dial gauge 14 is against one end of the dial gauge connecting rod 18. The other end of the dial gauge connecting rod 18 passes through the lower pressing block 24 and is fixed to the bottom of the top rod fixing plate 16. Preferably, the dial gauge 14 is locked on the bottom plate 13 by the dial gauge locking bolt 17.

[0046] The working process of this utility model:

[0047] 1. If Figure 6 As shown, the upper bearing 9, the lower bearing 27, the bearing spacer 28 and the standard outer spacer 29 are first assembled to form a combined bearing.

[0048] 2. If Figure 2 , 3As shown, install the combined bearing on the mandrel 5, tighten the clamping nut 8 with the washer 7 and lock it, apply a loading force from bottom to top to the outer ring of the lower bearing 27 to be tested through the push rod 11, and at the same time, turn the outer ring of the bearing by hand to overcome its friction and adjust the axial clearance between the two to the minimum full contact. Through the connection of the dial gauge connecting rod 18 and the dial gauge 14, adjust the value of the dial gauge 14 to 0, place the force pad 6 on the upper bearing 9, use the first load block 1, the upper pressure block connecting rod 2, and the upper pressure block 3 to load the combined bearing from above, and observe the change in the dial gauge 14, which is the clearance of the bearing.

[0049] 3. Add a standard outer spacer through the above detection method (the height of the standard outer spacer is smaller than the gap size after the two single-row tapered roller bearings and the spacer are assembled), and measure the axial clearance value of the bearings after assembly to obtain the accurate value of the gap size after the two sets of single-row tapered roller bearings and the spacer are assembled, such as Figure 6 As shown, the measurement principle is as follows:

[0050] △: The clearance size between two single-row tapered roller bearings and spacer rings after fitting together;

[0051] C: Actual measured value of standard outer spacer (standard value, obtained by measurement and testing);

[0052] Gr: Measured value of axial clearance (obtained by axial clearance meter);

[0053] The clearance size of two single-row tapered roller bearings after being assembled with spacers is: △=C+Gr, so Gr=△-C.

[0054] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A device for detecting axial clearance of two single-row tapered roller bearings, characterized in that: include: A combined bearing comprises an upper bearing (9), a lower bearing (27), a bearing spacer (28) arranged between the inner rings of the two bearings, and a standard outer spacer (29) arranged between the outer rings of the two bearings. The combined bearing is centrally sleeved with a mandrel (5) and then locked on a mandrel fixing plate (10). A bottom plate (13) is supported on the ground by a plurality of columns (22), a core shaft fixing plate (10) is embedded in the bottom plate (13), a push rod fixing plate (16) is arranged at a position corresponding to the core shaft fixing plate (10) below the bottom plate (13), a plurality of push rods (11) are passed between the push rod fixing plate (16) and the core shaft fixing plate (10), one end of the push rod (11) is fixed on the push rod fixing plate (16), and the other end of the push rod (11) is used to push against the outer ring of the lower bearing (27); A first force-applying component, one end of which is supported on a bottom plate (13) and the other end of which is mounted with an upper pressing block (3) for pressing the outer ring of the upper bearing (9) and applying a loading force from bottom to top to the outer ring of the lower bearing (27) through a push rod (11); A second force-applying component, one end of which is supported on the bottom plate (13), and the other end of which penetrates the bottom plate (13) and is movably connected to a lower pressing block mounting rod (21), the other end of the lower pressing block mounting rod (21) being supported on the bottom plate (13), and a lower pressing block (24) being mounted on the lower pressing block mounting rod (21); as well as The dial gauge connecting rod (18) is connected to the dial gauge supporting column (19) in a relatively rotatable manner at its center. The dial gauge supporting column (19) is fixedly supported on the bottom plate (13). The dial gauge (14) is inserted through the bottom plate (13), and the dial head of the dial gauge (14) is against one end of the dial gauge connecting rod (18). The other end of the dial gauge connecting rod (18) is inserted into the lower pressing block (24) and fixed on the top rod fixing plate (16).

2. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: The first force-applying component comprises an upper pressure block connecting rod (2), one end of the upper pressure block connecting rod (2) is hinged on an upper pressure block support column (4), the upper pressure block support column (4) is fixed on a base plate (13), the other end of the upper pressure block connecting rod (2) is slidably sleeved with a first load block (1), the upper pressure block (3) is hinged on the upper pressure block connecting rod (2) between the first load block (1) and the upper pressure block support column (4), and a force-applying pad (6) is installed at the lower end of the upper pressure block (3) for tightening the outer ring of the upper bearing (9).

3. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: The second force-applying component comprises a load block connecting rod (31), one end of which is hinged on the lower pressure block connecting rod (25), and a lower pressure block joint (23) is installed at the lower end of the lower pressure block connecting rod (25) for hinged connection to the lower pressure block mounting rod (21); a second load block (32) is slidably sleeved on the other end of the load block connecting rod (31), and a component column (26) is hinged on the load block connecting rod (31) between the second load block (32) and the lower pressure block connecting rod (25), and the component column (26) is fixed on the base plate (13).

4. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: The lower pressing block mounting rod (21) is hinged to the lower end of the lower pressing block supporting column (30) through a pin, and the upper end of the lower pressing block supporting column (30) is fixed on the bottom plate (13).

5. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: The lower part of the lower pressing block (24) is hinged on the lower pressing block mounting rod (21) through a pin, and a slot (33) is provided on the upper part of the lower pressing block (24) for inserting the dial gauge connecting rod (18).

6. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: A screw is passed through the center of the core shaft (5), a washer (7) is arranged on the top of the core shaft (5), and the screw locks the washer (7) and the upper bearing (9) with a clamping nut (8).

7. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: A plurality of guide pins (15) are inserted between the push rod fixing plate (16) and the core shaft fixing plate (10), and a spring (20) is sleeved on the outer periphery of the guide pins (15), and the spring (20) is pressed between the bottom plate (13) and the push rod fixing plate (16).

8. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: The push rod fixing plate (16) is provided with sliding grooves (34) in a radial direction corresponding to the number of the push rods (11), and the sliding grooves (34) are evenly distributed along the circumferential direction of the push rod fixing plate (16). The mandrel fixing plate (10) and the bottom plate (13) are also provided with sliding grooves (34) at corresponding positions. The push rod (11) passes through the sliding grooves (34) on the push rod fixing plate (16), the bottom plate (13) and the mandrel fixing plate (10) in sequence, and the fixed position on the push rod fixing plate (16) is adjusted according to the outer ring size of the combined bearing.

9. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1 is characterized in that: The micrometer support column (19) passes through the bottom plate (13) and is locked with a locking nut (12).

10. The axial clearance detection device for two single-row tapered roller combined bearings according to claim 1, characterized in that: The micrometer (14) is locked on the base plate (13) by means of a micrometer locking bolt (17).

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