CN219064386U - Lash measuring device for pull rod bearing in place - Google Patents
Lash measuring device for pull rod bearing in place Download PDFInfo
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- CN219064386U CN219064386U CN202223349052.9U CN202223349052U CN219064386U CN 219064386 U CN219064386 U CN 219064386U CN 202223349052 U CN202223349052 U CN 202223349052U CN 219064386 U CN219064386 U CN 219064386U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a play measuring device of a pull rod bearing in place, which comprises a clamping device, an adjusting device and a measuring device; the clamping device is connected with the side wall of the adjusting device, and the measuring device is arranged at the highest point of the adjusting device; the clamping device comprises a first clamping plate and a second clamping plate, wherein two ends of the first clamping plate are connected with the first end of the second clamping plate, a through hole is formed in the middle of the second clamping plate, the through hole is in sliding connection with the side wall of the vertical rod of the adjusting device, and a first threaded hole is formed in the second end of the second clamping plate. The clamping device can be fixedly connected with the bearing, the clamping device can be matched with bearings with different diameters, so that the fixed connection of the bearings with different diameters is realized, the adjusting device can realize the up-and-down adjustment of the measuring device, the measurement is more convenient, and meanwhile, the secondary adjustment of the measuring piece can be realized through the arrangement of the angle moving device in the measuring device, so that the measurement accuracy is ensured.
Description
Technical Field
The utility model belongs to the field of bearing detection, and particularly relates to a play measuring device for a pull rod bearing in place.
Background
The play of the bearing can have a decisive influence on the rolling fatigue life, temperature rise, noise, vibration and other properties of the bearing and even the running stability of the whole device. Too much play of the bearing reduces the rotational accuracy of the bearing during operation, thereby reducing the rolling fatigue life; and too small bearing play causes too large friction force generated during bearing operation, so that abrasion phenomenon and temperature rise phenomenon are aggravated, and even bearing locking phenomenon is caused. Therefore, the size of the play of the bearing needs to be strictly controlled, so that the service life of the bearing is prolonged, and the long-time stable operation of the equipment is ensured. The rotor wing of the helicopter is a core component for generating lift force and operating force for the helicopter to fly, and is also a main vibration source of the helicopter. The problems of flight performance, steering quality, vibration, noise level, life and reliability of helicopters are all solved or improved by mastering the aerodynamic and dynamic characteristics of the rotor system and improving the rotor design analysis, manufacturing, test and test methods. The pull rod bearing is mainly applied to a main tail rotor wing of a helicopter, is an important part for controlling the total moment, torque conversion and total distance of the tail rotor wing, is positioned in high-speed rotation in the working process, and meanwhile, the inner ring of the bearing swings at high speed relative to the outer ring, so that the use condition is very bad, and the pull rod bearing is exposed to the environment such as external high and low temperature, damp heat, salt fog, dust and the like, and is extremely easy to abrade. Meanwhile, the bearing bears alternating axial and radial loads, and the working condition is very bad. Therefore, it is important to strictly control the play of the pull rod bearing.
The measurement of bearing play requires fixing one of the inner and outer rings of the bearing to apply a load in the radial or axial direction of the bearing to obtain the measured play of the bearing. The bearing to be measured needs to be disassembled before the clearance measurement and is fixed on a bearing clearance measurement device to measure the clearance. Fixing the inner ring of the bearing, applying radial or axial loads in different directions on the outer ring of the bearing, and measuring the displacement of the outer ring of the bearing, thereby obtaining the measuring play of the bearing. The disadvantages of the conventional bearing play measuring device are mainly as follows:
1. the bearing needs to be removed from the working equipment to be placed on top of the specified bearing play measuring device for bearing play measurement.
2. The measured play obtained by the conventional bearing play measuring device contains a part of the elastic strain, so that the measured play is larger than the theoretical play, and the increased value is the elastic strain. And the magnitude of the elastic strain contained in the measured play measured under different loads is different, it is difficult to obtain an accurate theoretical play.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a play measuring device for a pull rod bearing in place, the clamping device of the device can ensure the fixed connection with the bearing, and the setting of the clamping device can be matched with bearings with different diameters, so that the fixed connection of the bearings with different diameters is realized, the adjusting device can realize the up-and-down adjustment of the measuring device, so that the measurement is more convenient, and meanwhile, the setting of the angle moving device in the measuring device can realize the secondary adjustment of a measuring piece, so that the measurement accuracy is ensured.
In order to achieve the above purpose, the utility model discloses the following technical scheme:
a play measuring device of a pull rod bearing in place comprises a clamping device, an adjusting device and a measuring device; the clamping device is connected with the side wall of the adjusting device, and the measuring device is arranged at the highest point of the adjusting device; the clamping device comprises a first clamping plate and a second clamping plate, two ends of the first clamping plate are respectively connected with two ends of a first side part of the second clamping plate, a through hole is formed in the middle of the second clamping plate, the side wall of a vertical rod of the adjusting device penetrates through the through hole and can slide in the through hole, and a first threaded hole is formed in a second side part of the second clamping plate; the adjusting device comprises a connecting supporting plate, a vertical rod, a spring, an adjusting piece and a locking piece, wherein a threaded column is arranged at the first end of the connecting supporting plate, a second threaded hole is formed in the second end of the connecting supporting plate, an internal threaded groove matched with the threaded column is formed in the first end of the vertical rod, a mounting groove connected with the measuring device is formed in the second end of the vertical rod, the locking piece is arranged on the mounting groove, and the adjusting piece penetrates through the second threaded hole and then is connected with the first threaded hole; the measuring device comprises a measuring piece and an angle moving device; the first end of the angle moving device is connected with the mounting groove of the vertical rod through the locking piece, and the measuring piece is connected with the second end of the angle moving device.
Preferably, the angle moving device comprises a connecting rod, a spherical groove body, a sphere and a fastening column, wherein a first end of the connecting rod is connected with the mounting groove, a second end of the connecting rod is connected with the spherical groove body, the first end of the sphere is rotatably arranged in the groove of the spherical groove body, and a measuring device connecting piece is arranged at the second end of the sphere; and the side wall of the spherical groove body is provided with a locking hole, and the fastening column is connected with the spherical groove body through the locking hole.
Preferably, the spring is sleeved on the outer side wall of the vertical rod, the first end of the spring is in contact with the second clamping plate, and the second end of the spring is in contact with the connecting supporting plate.
Preferably, the adjusting member comprises a positioning nut, an adjusting rod and a regulating nut, the positioning nut is arranged on the side wall of the adjusting rod, the first end of the adjusting rod is connected with the regulating nut, a thread structure is arranged on the side wall of the adjusting rod, and the second end of the adjusting rod is in threaded connection with the first threaded hole.
Preferably, the opposite surfaces of the first clamping plate and the second clamping plate are respectively provided with a bending surface.
Compared with the prior art, the utility model has the following beneficial effects:
1. the clamping device provided by the utility model can realize that the pull rod bearing is measured in the state of keeping in situ, the pull rod bearing does not need to be disassembled from a working position before measurement, the labor and material resources consumed by disassembling and assembling the bearing are saved, the detection cost is reduced, the efficiency of detection work is improved, and the clamping fixation of the pull rod bearings with different diameters can be realized by the mutual matching of the first clamping plate and the second clamping plate, so that the play measurement of the pull rod bearings with various diameters is realized.
2. The adjusting device and the clamping device are matched, so that the measuring device can adjust the upper and lower amplitude, and the correction time is saved.
3. The angle moving device is arranged in the measuring device, the angle moving device can measure any angle of the measuring piece, and meanwhile, the fastening column is arranged on the angle moving device, so that the locking of the angle moving device at a proper position can be realized, and the accuracy of secondary measurement is ensured. The arrangement of the measuring piece at any angle can remove elastic strain contained in the measuring clearance in the traditional bearing clearance measuring device, so that the measured bearing clearance is more accurate.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a second schematic diagram of the overall structure of the present utility model;
FIG. 3 is a third schematic diagram of the overall structure of the present utility model;
FIG. 4 is a schematic diagram of the connection of the uninstalled measurement article of the present utility model;
FIG. 5 is a schematic view showing the connection between the clamping device and the adjusting device without the vertical rod;
FIG. 6 is a schematic diagram illustrating the connection between the first clamping plate and the second clamping plate according to the present utility model;
FIG. 7 is an enlarged schematic view of the connection pallet of the present utility model;
fig. 8 is a schematic view of the overall structure of the angle motion device of the present utility model.
Some of the figures are described below:
1-clamping device, 2-adjusting device, 3-measuring device, 4-first clamping plate, 5-second clamping plate, 6-through hole,
7-a first threaded hole, 8-a second threaded hole, 9-a connecting supporting plate, 10-a vertical rod, 11-a spring, 12-an adjusting piece,
13-locking piece, 14-screw thread post, 15-connecting rod, 16-measuring piece, 18-angle activity device, 19-set nut, 20-regulation pole, 21-regulation nut, 22-curved face, 23-splint connecting piece, 24-spherical recess body, 25-spheroid, 26-fastening post, 27-measuring device connecting piece.
Detailed Description
Exemplary embodiments, features and aspects of the present utility model will be described in detail below with reference to the attached drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The utility model provides a play measuring device for a pull rod bearing in place, which is shown in figures 1-8 and comprises a clamping device 1, an adjusting device 2 and a measuring device 3; the clamping device 1 is connected with the side wall of the adjusting device 2, and the measuring device 3 is arranged at the highest point of the adjusting device 2.
Clamping device 1 includes first splint 4 and second splint 5, and splint connecting piece 23 fixed connection is passed through to the both ends of first splint 4 and the first end of second splint 5, and splint connecting piece 23 can be bolt and nut also can be round pin axle or other column connecting device, and splint connecting piece 23 in this embodiment is bolt and nut, and through-hole 6 has been seted up to the middle part position of second splint 5, through-hole 6 and adjusting device 2's montant 10's lateral wall sliding connection, and first screw hole 7 has been seted up to the second end of second splint 5.
The adjusting device 2 comprises a connecting supporting plate 9, a vertical rod 10, a spring 11, an adjusting piece 12 and a locking piece 13, wherein a threaded column 14 is arranged at the first end of the connecting supporting plate 9, a second threaded hole 8 is formed in the second end of the connecting supporting plate 9, an internal threaded groove matched with the threaded column 14 is formed in the first end of the vertical rod 10, a mounting groove connected with the measuring device 3 is formed in the second end of the vertical rod 10, the locking piece 13 is arranged on the mounting groove, and the adjusting piece 12 penetrates through the second threaded hole 8 to be connected with the first threaded hole 7.
The measuring device 3 comprises a measuring member 16 and an angular movement device 18; the first end of the angle movement device 18 is connected with the mounting groove of the vertical rod 10 through the locking piece 13, and the measuring piece 16 is connected with the second end of the angle movement device 18.
The angle moving device 18 comprises a connecting rod 15, a spherical groove body 24, a sphere 25 and a fastening column 26, wherein a first end of the connecting rod 15 is connected with the mounting groove, a second end of the connecting rod 15 is connected with the spherical groove body, the first end of the sphere 25 is arranged in the groove of the spherical groove body 24 and can rotate in the groove, and a measuring device connecting piece 27 is arranged at the second end of the sphere 25; the measuring device connector 27 may be a belt and snap fit or other means capable of a secure connection; the side wall of the spherical groove body 24 is provided with a locking hole, the fastening column 26 is connected with the spherical groove body 24 through the locking hole, the angle moving device 18 can enable the measuring piece 16 to move at any angle, so that bearing play at different positions is measured, when the direction of the measuring end of the measuring piece 16 needs to be fixed, the fastening column 26 is rotated, the fastening column 26 locks the positions of two freely-moving parts of the angle moving device 18, and therefore the measuring position cannot deviate due to external force.
The spring 11 is arranged on the side wall of the vertical rod 10, and the first end of the spring 11 is in contact with the second clamping plate 5, and the second end of the spring 11 is in contact with the connecting supporting plate 9.
The regulating part 12 comprises a positioning nut 19, a regulating rod 20 and a regulating nut 21, wherein the positioning nut 19 is arranged on the side wall of the regulating rod 20, the first end of the regulating rod 20 is connected with the regulating nut 21, a threaded structure is arranged on the side wall of the regulating rod 20, the second end of the regulating rod 20 is in threaded connection with the first threaded hole 7, when the horizontal height needs to be regulated, the regulating nut 21 is rotated while the pressure is applied to the second clamping piece, the regulating nut 21 drives the regulating rod 20 to rotate, the regulating rod 20 passes through the first threaded hole 7 and slowly stretches out of the first threaded hole 7, meanwhile, the spring 11 is compressed, upward supporting force is simultaneously applied to the second clamping piece, the positioning nut 19 is rotated after the position reaches the proper height, the positioning nut 19 is contacted with the lower surface of the second clamping piece, and therefore the measurement position is fixed.
The opposite faces of the first clamping plate 4 and the second clamping plate 5 are respectively provided with a curved face 22 so that the device can clamp bearings of different diameters for measuring them.
When in operation, the device comprises:
the rotation of the locking member 13 of the adjusting device 2 realizes the fixed connection of the adjusting device 2 and the measuring device 3, then the measuring member 16 (the measuring member 16 in this embodiment is a dial indicator) is adjusted so that the measuring target position of the measuring member 16 is located in the vertical direction of the measuring member 16, and the adjustment in the horizontal direction is adjusted by controlling the position of the connecting rod 15 of the measuring device 3 passing through the top end of the vertical rod 10 and rotating the vertical rod, so that the dial indicator (the measuring member 16) reaches an ideal measuring position, thereby measuring the play of the pull rod bearing.
The rod body of the pull rod bearing and the outer ring of the bearing are of an integrated structure, and the inner ring of the bearing is matched with a mandrel because the pull rod bearing is in an installation state. The play of the bearing is the displacement of the inner ring of the bearing relative to the outer ring of the bearing under the action of load, the device is connected with the pull rod bearing through the clamping device, so that the rod body of the pull rod bearing is fixed, the position of the dial indicator (the measuring piece 16) is adjusted, the target measuring position of the dial indicator (the measuring piece 16) is on a mandrel connected with the inner ring of the bearing, then the pull rod bearing is respectively applied with tensile load and compressive load in a simulated working state, the indication of the dial indicator (the measuring piece 16) under two different loads is read, the difference value of the indication is the measured play of the pull rod bearing, the obtained measured play is the elastic strain of the bearing, and the elastic strain in the measured play needs to be removed to obtain the play value for removing the elastic strain, which is closer to the theoretical play.
Specifically, since the rod body of the pull rod bearing is integrated with the outer ring of the bearing, the elastic strain of the rod body of the pull rod bearing and the elastic strain of the bearing outer ring are integrated. The elastic strain not only comprises the elastic strain of the bearing outer ring, but also comprises the elastic strain of the bearing rod body, and exceeds the elastic strain of the bearing outer ring, and the elastic strain value has a larger influence corresponding to the play value of the bearing, so that the influence of the elastic strain needs to be eliminated. The device fixing and adjusting operation is carried out according to the steps, the measuring position of the dial indicator (measuring piece 16) is fixed on the outer ring of the pull rod bearing, the pull rod bearing is respectively applied with tensile load and compressive load in a simulated working state, the indication of the dial indicator (measuring piece 16) under two different loads is read, and the difference value of the indication is the elastic strain difference of the pull rod bearing when the pull rod bearing works under two different loads. The measured clearance of the pull rod bearing in the last step contains the elastic strain, so that the value obtained by subtracting the elastic strain value of the bearing in the last step from the bearing clearance value measured in the last step is the bearing clearance after the elastic strain is removed, and the measured clearance is closer to the theoretical clearance of the bearing, thereby ensuring the accuracy of the measurement result.
It should be noted that the rod bearings are two rod end bearings respectively disposed at both ends of the rod body, so that when the measured play and elastic strain of the bearings are measured, the sum of the values of the two bearings is measured, and the obtained value needs to be divided by 2 to obtain the play value of one of the bearings.
According to the utility model, the device is arranged on the rod body of the pull rod bearing, so that the disassembly-free measurement of the play of the pull rod bearing is realized. The device can measure the measuring clearance of the bearing and the elastic strain of the bearing at the same time, and the numerical value which is closer to the theoretical clearance of the bearing is obtained by calculating the difference between the measuring clearance and the elastic strain of the bearing. The utility model can reduce the disassembly before bearing play measurement and the installation work after measurement, thereby saving manpower and material resources to a great extent and saving the cost of bearing measurement; in addition, the utility model has simple structure, less total parts, convenient disassembly and assembly, low cost, small occupied space, convenient operation, wide applicability and wide engineering application prospect, and can be installed on pull rod bearings with different sizes.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (5)
1. A play measuring device of pull rod bearing in place, characterized by: the device comprises a clamping device, an adjusting device and a measuring device;
the clamping device is connected with the side wall of the adjusting device, and the measuring device is arranged at the highest point of the adjusting device;
the clamping device comprises a first clamping plate and a second clamping plate, wherein two ends of the first clamping plate are connected with the first end of the second clamping plate, a through hole is formed in the middle of the second clamping plate, the through hole is in sliding connection with the side wall of the vertical rod of the adjusting device, and a first threaded hole is formed in the second end of the second clamping plate;
the adjusting device comprises a connecting supporting plate, a vertical rod, a spring, an adjusting piece and a locking piece, wherein a threaded column is arranged at the first end of the connecting supporting plate, a second threaded hole is formed in the second end of the connecting supporting plate, an internal threaded groove matched with the threaded column is formed in the first end of the vertical rod, a mounting groove connected with the measuring device is formed in the second end of the vertical rod, the locking piece is arranged on the mounting groove, and the adjusting piece penetrates through the second threaded hole to be connected with the first threaded hole;
the measuring device comprises a measuring piece and an angle moving device; the first end of the angle moving device is connected with the mounting groove of the vertical rod through the locking piece, and the measuring piece is connected with the second end of the angle moving device.
2. The pull rod bearing in-place play measurement device of claim 1, wherein: the angle moving device comprises a connecting rod, a spherical groove body, a sphere and a fastening column, wherein a first end of the connecting rod is connected with the mounting groove, a second end of the connecting rod is connected with the spherical groove body, the first end of the sphere is arranged in the groove of the spherical groove body and can rotate in the groove, and a measuring device connecting piece is arranged at the second end of the sphere; and the side wall of the spherical groove body is provided with a locking hole, and the fastening column is connected with the spherical groove body through the locking hole.
3. The pull rod bearing in-place play measurement device of claim 1, wherein: the spring is arranged on the side wall of the vertical rod, the first end of the spring is in contact with the second clamping plate, and the second end of the spring is in contact with the connecting supporting plate.
4. The pull rod bearing in-place play measurement device of claim 1, wherein: the adjusting piece comprises a positioning nut, an adjusting rod and a regulating nut, wherein the positioning nut is arranged on the side wall of the adjusting rod, the first end of the adjusting rod is connected with the regulating nut, a threaded structure is arranged on the side wall of the adjusting rod, and the second end of the adjusting rod is in threaded connection with the first threaded hole.
5. The pull rod bearing in-place play measurement device of claim 1, wherein: the opposite surfaces of the first clamping plate and the second clamping plate are respectively provided with a bending surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223349052.9U CN219064386U (en) | 2022-12-13 | 2022-12-13 | Lash measuring device for pull rod bearing in place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223349052.9U CN219064386U (en) | 2022-12-13 | 2022-12-13 | Lash measuring device for pull rod bearing in place |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219064386U true CN219064386U (en) | 2023-05-23 |
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ID=86341885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223349052.9U Active CN219064386U (en) | 2022-12-13 | 2022-12-13 | Lash measuring device for pull rod bearing in place |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219064386U (en) |
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2022
- 2022-12-13 CN CN202223349052.9U patent/CN219064386U/en active Active
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