CN212748041U

CN212748041U - Noise testing device for noise reduction gear

Info

Publication number: CN212748041U
Application number: CN202022163066.6U
Authority: CN
Inventors: 胡豪; 胡军; 丁焕明; 周成春
Original assignee: Hangzhou Weida Casting Co ltd
Current assignee: Hangzhou Weida Casting Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-03-19
Anticipated expiration: 2030-09-27

Abstract

The application relates to the field of noise testing, in particular to a noise testing device for a noise reduction gear, which comprises a base, a fixed plate, a driving gear shaft and a driven gear shaft, wherein the fixed plate is erected on the base; and the fixed plate is also provided with a driving mechanism for driving the sliding block to slide along the sliding groove. This scheme has adopted the driven gear shaft of slidingtype, has realized the adjustment of distance between driving gear shaft and the driven gear shaft to be suitable for the gear of more sizes, this has effectively promoted noise testing arrangement's result of use.

Description

Noise testing device for noise reduction gear

Technical Field

The application relates to the field of noise testing, in particular to a noise testing device for a noise reduction gear.

Background

The gear transmission noise is mainly formed by coupling vibration noise of a base body and meshing noise of gears, and the strength of the noise represents the transmission quality of the gears. In order to ensure the qualified rate of gear products, the transmission noise of the gears must be detected and analyzed before the gears are delivered out of a factory.

The patent with publication number CN204881844U provides a gear noise testing device, including gear, two-way switch, base, digital decibel appearance, test platform, gear locates on this base, this gear top is located to the digital decibel appearance, two-way switch locates base one side, two-way switch with the base all is fixed in on the test platform.

Although the noise testing device is simple to operate and low in cost, the distance between the driving gear shaft and the driven gear shaft is fixed, so that the noise testing device can only test gears with specific sizes, the noise testing device cannot be suitable for gears with more sizes, and the using effect of the noise testing device is seriously reduced.

SUMMERY OF THE UTILITY MODEL

In order to realize the adjustment of distance between driving gear axle and the driven gear axle to be suitable for the gear of more sizes, improve noise testing arrangement's result of use, this application provides a noise testing arrangement for making an uproar gear falls.

The application provides a noise testing arrangement for making an uproar gear falls adopts following technical scheme:

a noise testing device for a noise reduction gear comprises a base, a fixing plate, a driving gear shaft, a driven gear shaft, a clamp, a motor and a decibel meter, wherein the fixing plate is erected on the base, the driving gear shaft and the driven gear shaft are rotatably connected to the fixing plate, the clamp is arranged on the driving gear shaft and the driven gear shaft and used for clamping the gear, the motor is arranged on the fixing plate and used for rotating the driving gear shaft, the decibel meter is arranged on the fixing plate, a horizontal sliding groove is formed in the fixing plate, and a sliding block which is rotatably connected with the driven gear; and the fixed plate is also provided with a driving mechanism for driving the sliding block to slide along the sliding groove.

Through adopting above-mentioned technical scheme, after the size of the gear that awaits measuring changes, operative employee accessible actuating mechanism orders about the slider and takes place the horizontal slip in the spout, and the driven gear axle will slide along with the slider takes place in step, and the distance between driving gear axle and the driven gear axle just can change, and driving gear axle and driven gear axle alright be suitable for the clamping of more size gears. Compared with the prior art, this scheme has adopted the driven gear shaft of slidingtype, has realized the adjustment of distance between driving gear shaft and the driven gear shaft to be suitable for the gear of more sizes, this effectively has promoted noise testing arrangement's result of use.

Preferably, the driving mechanism comprises a threaded rod which is rotatably connected in the sliding groove and has the same length direction with the sliding groove, and the threaded rod penetrates through the sliding block and is in threaded fit with the sliding block; the driving mechanism also comprises a hand crank fixedly connected to one end of the threaded rod.

Through adopting above-mentioned technical scheme, the threaded rod is rotated through the crank to the operative employee, pulls at the screw thread and under the position constraint of spout inner wall, and slider and driven gear axle just can take place the horizontal slip along the spout. The driving mechanism is simple in structure principle, and facilitates an operator to adjust the distance between the driving gear shaft and the driven gear shaft.

Preferably, an installation groove communicated with the threaded rod is formed in the sliding block, and a butting block meshed with the threaded rod is attached to the installation groove in a sliding mode; be equipped with in the mounting groove and order about the butt piece and support the spring tight on the threaded rod, still be equipped with on the slider and order about the stay cord of butt piece compression spring and retraction mounting inslot.

Through adopting above-mentioned technical scheme, when needs removed the driven gear axle by a wide margin, the operative employee orders about butt piece compression spring and breaks away from the threaded rod through the stay cord, and the slider will no longer receive the restraint of threaded rod, and slider and driven gear axle alright take place freely and slide. After the driven gear shaft is adjusted to a proper position, the operator releases the pull rope again, the abutting block is tightly abutted to the threaded rod again under the action of the spring, and the sliding block is restrained by the threaded rod again, so that the position locking of the sliding block and the driven gear shaft is realized. The setting of mounting groove, butt joint piece, spring and stay cord has not only made things convenient for the position of operative employee quick adjustment slider and driven gear shaft, has effectively improved the adjustment efficiency of distance between driving gear axle and the driven gear shaft, has still improved the flexibility of noise testing arrangement when using simultaneously.

Preferably, one end of the pull rope, which is far away from the sliding block, is fixedly connected with a pull ring, and the sliding block is provided with a drag hook which hooks the pull ring when the abutting block is separated from the threaded rod.

Through adopting above-mentioned technical scheme, the operative employee comes the pulling rope through the pull ring, and the stay cord will stimulate butt piece compression spring and break away from the threaded rod. After the butt piece breaks away from the threaded rod, the operative employee catches on the pull ring through the drag hook again, and this has effectively avoided the butt piece to support the condition of tight threaded rod again, has reserved sufficient time for the operative employee to adjust the position of slider and driven gear shaft, has made things convenient for the operative employee to adjust the distance between driving gear shaft and the driven gear shaft.

Preferably, the fixed plate is provided with a dial gauge for displaying the distance between the driving gear shaft and the driven gear shaft.

Through adopting above-mentioned technical scheme, the graduation apparatus provides the reference for the position of operative employee adjustment slider and driven gear axle, makes the operative employee can adjust the interval of driving gear axle and driven gear axle fast and accurately, has improved the efficiency and the precision of both interval adjustments.

Preferably, the sliding block is embedded with a ball which is abutted against the side wall of the sliding groove in a rolling manner.

Through adopting above-mentioned technical scheme, the ball can reduce the frictional force between slider and the spout lateral wall, and the position control of slider and driven gear axle will be more smooth.

Preferably, the fixed plate comprises an outer plate which is vertically arranged on the base and an inner plate which is embedded in the outer plate in a sliding manner, and the driving gear shaft, the driven gear shaft, the clamp, the motor, the decibel meter, the sliding chute, the sliding block and the driving mechanism are all arranged on the inner plate; the outer plate is in threaded connection with a bolt for abutting against the inner plate.

Through adopting above-mentioned technical scheme, when the size of gear is too big and contradict the upper surface of base, the operative employee can upwards lifting inner panel, and driving gear axle, driven gear axle, anchor clamps, motor, decibel appearance, spout, slider and actuating mechanism all can be followed the inner panel and are in step by the lifting, and the gear on driving gear axle and the driven gear axle will not contradict the base to noise testing arrangement's normal work has been ensured. When the inner plate is lifted to a proper height, an operator tightens the bolt to enable the bolt to abut against the inner plate. If the inner plate needs to be moved again, the operator unscrews the bolt to prevent the bolt from abutting against the inner plate.

Preferably, the slide block is fixedly connected with a connecting plate, and the decibel meter is arranged on the connecting plate.

By adopting the technical scheme, when the sliding block and the driven gear shaft slide, the decibel instrument on the connecting plate also slides along with the sliding block and the driven gear shaft, so that the decibel instrument can be always positioned at a better sound receiving position, and the detection precision of the decibel instrument is favorably improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the sliding chute, the sliding block and the driving mechanism realizes the adjustment of the distance between the driving gear shaft and the driven gear shaft so as to be suitable for gears with more sizes and improve the use effect of the noise testing device;

2. due to the arrangement of the mounting groove, the abutting block, the spring and the pull rope, the adjusting efficiency of the distance between the driving gear shaft and the driven gear shaft is effectively improved;

3. due to the arrangement of the pull ring and the drag hook, an operator can conveniently adjust the distance between the driving gear shaft and the driven gear shaft;

4. due to the arrangement of the dial gauge, the efficiency and the precision of adjusting the distance between the driving gear shaft and the driven gear shaft are improved;

5. the arrangement of the outer plate, the inner plate and the locking mechanism ensures the normal work of the noise testing device;

6. the arrangement of the connecting plate is favorable for improving the detection precision of the decibel meter.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a base; 2. a fixing plate; 3. a driving gear shaft; 4. a driven gear shaft; 5. positioning a plate; 6. a gear; 7. a nut; 8. a motor; 9. a decibel meter; 10. a chute; 11. a slider; 12. a ball bearing; 13. a threaded rod; 14. a hand crank; 15. a dial gauge; 16. mounting grooves; 17. a butting block; 18. a spring; 19. pulling a rope; 20. a pull ring; 21. pulling a hook; 22. a connecting plate; 23. an outer plate; 24. an inner plate; 25. and (4) bolts.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

Referring to fig. 1, a noise testing device for a noise reduction gear comprises a base 1, a fixing plate 2 erected on the base 1, a driving gear 6 shaft 3 and a driven gear shaft 4 which are rotatably connected to the fixing plate 2 and are in a horizontal state, wherein the driving gear 6 shaft 3 and the driven gear shaft 4 are parallel to each other and are at the same horizontal height; the noise testing device further comprises a positioning plate 5 fixedly sleeved on the driving gear 6 shaft 3 and the driven gear shaft 4, a nut 7 used for tightly supporting the gear 6 on the positioning plate 5 is sleeved on the driving gear 6 shaft 3 and the driven gear shaft 4 through threads, a motor 8 installed on the fixing plate 2 and used for rotating the driving gear 6 shaft 3, and a decibel meter 9 used for detecting the noise size, wherein the motor 8 and the decibel meter 9 are connected with a power supply through electric wires. The positioning plate 5 and the nut 7 form a clamp for clamping the gear 6. An operator sleeves two gears 6 to be tested on the driving gear 6 shaft 3 and the driven gear shaft 4 respectively, the nut 7 is rotated to clamp the gears 6 between the nut 7 and the positioning plate 5, then the operator starts the motor 8 to rotate the driving gear 6 shaft 3, the two gears 6 rotate synchronously, and the decibel meter 9 can detect the noise generated in the transmission process of the two gears 6 so as to judge the quality of the gears 6.

Referring to fig. 1 and 2, a horizontal sliding groove 10 is formed in the fixing plate 2, the length direction of the sliding groove 10 is the same as the radius direction of the driving gear 6 shaft 3, a sliding block 11 is attached to the sliding groove 10 in a sliding mode, the driven gear shaft 4 is connected to the sliding block 11 in a rotating mode around the axis of the driven gear shaft, and a ball 12 abutting against the side wall of the sliding groove 10 is further embedded in the sliding block 11 in a rolling mode. A threaded rod 13 which is the same as the sliding groove 10 in length direction is connected in the sliding groove 10 in a rotating mode, the threaded rod 13 penetrates through the sliding block 11 and is in threaded fit with the sliding block 11, and one end, far away from the shaft 3 of the driving gear 6, of the threaded rod 13 penetrates through the fixing plate 2 and is provided with a crank 14. The threaded rod 13 and the hand crank 14 form a drive mechanism. After the size of the gear 6 changes, an operator rotates the threaded rod 13 through the hand crank 14, under the traction of the threads and the constraint of the side wall of the chute 10, the slide block 11 is close to or far away from the driving gear 6 shaft 3 along the chute 10, the distance between the driven gear shaft 4 and the driving gear 6 shaft 3 changes, and the driving gear 6 shaft 3 and the driven gear shaft 4 can be suitable for gears 6 with more sizes.

Referring to fig. 1, in order to allow an operator to quickly and precisely adjust the distance between the driven gear shaft 4 and the driving gear shaft 3, a scale 15 for displaying the distance between the two is formed on the fixed plate 2.

Referring to fig. 1 and 2, a mounting groove 16 communicated with the threaded rod 13 is formed in the sliding block 11, an abutting block 17 is embedded in the mounting groove 16 in a sliding mode, and one surface, close to the threaded rod 13, of the abutting block 17 can be embedded in threads of the threaded rod 13 and meshed with the threaded rod 13. A spring 18 is fixedly connected between the bottom of the mounting groove 16 and the abutting block 17, when the spring 18 is in a natural state, the spring 18 tightly pushes the abutting block 17 against the threaded rod 13, and when the spring 18 is in a contraction state, the abutting block 17 retracts into the mounting groove 16 and is separated from the threaded rod 13. Be equipped with stay cord 19 on the slider 11, the one end of stay cord 19 stretch into in the mounting groove 16 and with butt piece 17 fixed connection, the lateral wall and the fixedly connected with pull ring 20 of slider 11 are worn out to the other end of stay cord 19, still link firmly on the slider 11 and catch on the drag hook 21 of pull ring 20 when butt piece 17 breaks away from threaded rod 13. When the driven gear shaft 4 needs to be moved greatly, an operator pulls the pull rope 19 through the pull ring 20, the pull rope 19 pulls the abutting block 17 to compress the spring 18 and retracts into the mounting groove 16, after the abutting block 17 is separated from the threaded rod 13, the operator hooks the pull ring 20 through the pull hook 21, the slide block 11 at the moment is not restrained by the threaded rod 13 any more, the slide block 11 and the driven gear shaft 4 can freely horizontally slide on the fixing plate 2, and therefore the large-amplitude sliding of the driven gear shaft 4 is achieved. After the driven gear shaft 4 is adjusted to a proper position, the operator releases the pull rope 19 to enable the abutting block 17 to abut against the threaded rod 13 again, the sliding block 11 and the driven gear shaft 4 complete position locking, and the operator can continue to test the noise of the gear 6.

Referring to fig. 1, a connecting plate 22 for mounting the decibel meter 9 is erected on the slide block 11. When the slide block 11 and the driven gear shaft 4 slide, the decibel meter 9 will slide synchronously along with the slide block 11, thereby the decibel meter can be always in a better sound receiving position, and the detection precision of the decibel meter 9 is ensured.

Referring to fig. 1 and 2, the fixing plate 2 includes an outer plate 23 erected on the base 1 and having a square ring-shaped cross section, and an inner plate 24 slidably attached in the outer plate 23, and the driving gear 6 shaft 3, the driven gear shaft 4, the clamp, the motor 8, the decibel meter 9, the sliding groove 10, the sliding block 11, the threaded rod 13, the crank 14 and the dial gauge 15 are all located on the inner plate 24. The outer plate 23 is also screwed with a bolt 25 for tightly abutting against the side wall of the inner plate 24. When the gear 6 to be tested is abutted against the upper surface of the base 1, the operator can lift the inner plate 24 upwards to avoid the above situation, and the normal operation of the device is ensured. When the inner plate 24 is lifted to a suitable height, the operator then tightens the bolt 25 against the side wall of the inner plate 24. To readjust the position of the inner plate 24, the operator unscrews the bolt 25.

The implementation principle of the embodiment is as follows: after the size of the gear 6 changes, an operator rotates the threaded rod 13 through the hand crank 14, under the traction of the threads and the constraint of the side wall of the chute 10, the slide block 11 is close to or far away from the driving gear 6 shaft 3 along the chute 10, the distance between the driven gear shaft 4 and the driving gear 6 shaft 3 changes, and the driving gear 6 shaft 3 and the driven gear shaft 4 can be suitable for gears 6 with more sizes. When the driven gear shaft 4 needs to be moved greatly, an operator pulls the pull rope 19 through the pull ring 20, the pull rope 19 pulls the abutting block 17 to compress the spring 18 and retracts into the mounting groove 16, after the abutting block 17 is separated from the threaded rod 13, the operator hooks the pull ring 20 through the pull hook 21, the slide block 11 at the moment is not restrained by the threaded rod 13 any more, the slide block 11 and the driven gear shaft 4 can freely horizontally slide on the fixing plate 2, and therefore the large-amplitude sliding of the driven gear shaft 4 is achieved. After the driven gear shaft 4 is adjusted to a proper position, the operator releases the pull rope 19 to enable the abutting block 17 to abut against the threaded rod 13 again, the sliding block 11 and the driven gear shaft 4 complete position locking, and the operator can continue to test the noise of the gear 6.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a noise testing arrangement for making an uproar gear falls, including base (1), erect fixed plate (2) on base (1), rotate drive gear axle (3) and driven gear axle (4) of connection on fixed plate (2), the setting is used for the anchor clamps of clamping gear (6) on drive gear axle (3) and driven gear axle (4), the setting is used for motor (8) of rotatory drive gear axle (3) on fixed plate (2), and decibel appearance (9) of setting on fixed plate (2), its characterized in that: a horizontal sliding chute (10) is formed in the fixed plate (2), and a sliding block (11) rotationally connected with the driven gear shaft (4) is attached in the sliding chute (10) in a sliding manner; the fixed plate (2) is also provided with a driving mechanism for driving the sliding block (11) to slide along the sliding groove (10).

2. A noise testing device for a noise-reduced gear according to claim 1, wherein: the driving mechanism comprises a threaded rod (13) which is rotatably connected in the sliding chute (10) and has the same length direction with the sliding chute (10), and the threaded rod (13) penetrates through the sliding block (11) and is in threaded fit with the sliding block (11); the driving mechanism also comprises a hand crank (14) fixedly connected with one end of the threaded rod (13).

3. A noise testing device for a noise-reduced gear according to claim 1, wherein: an installation groove (16) communicated with the threaded rod (13) is formed in the sliding block (11), and a butting block (17) meshed with the threaded rod (13) is attached to the installation groove (16) in a sliding mode; a spring (18) which drives the abutting block (17) to abut against the threaded rod (13) is arranged in the mounting groove (16), and a pull rope (19) which drives the abutting block (17) to compress the spring (18) and retract into the mounting groove (16) is also arranged on the sliding block (11).

4. A noise testing device for a noise-reduced gear according to claim 3, wherein: one end of the pull rope (19) far away from the sliding block (11) is fixedly connected with a pull ring (20), and the sliding block (11) is provided with a drag hook (21) which hooks the pull ring (20) when the abutting block (17) is separated from the threaded rod (13).

5. A noise testing device for a noise-reduced gear according to claim 1, wherein: and a dial gauge (15) for displaying the distance between the driving gear shaft (3) and the driven gear shaft (4) is arranged on the fixing plate (2).

6. A noise testing device for a noise-reduced gear according to claim 1, wherein: and the sliding block (11) is provided with a rolling ball (12) which is abutted against the side wall of the sliding chute (10) in a rolling and embedding way.

7. A noise testing device for a noise-reduced gear according to claim 1, wherein: the fixed plate (2) comprises an outer plate (23) which is vertically arranged on the base (1) and an inner plate (24) which is embedded in the outer plate (23) in a sliding manner, and the driving gear shaft (3), the driven gear shaft (4), the clamp, the motor (8), the decibel meter (9), the sliding chute (10), the sliding block (11) and the driving mechanism are all arranged on the inner plate (24); the outer plate (23) is connected with a bolt (25) in a threaded manner for abutting against the inner plate (24).

8. A noise testing device for a noise-reduced gear according to claim 1, wherein: the slider (11) is fixedly connected with a connecting plate (22), and the decibel meter (9) is arranged on the connecting plate (22).