CN211576549U - Running test device for speed reducer - Google Patents
Running test device for speed reducer Download PDFInfo
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- CN211576549U CN211576549U CN202020621063.XU CN202020621063U CN211576549U CN 211576549 U CN211576549 U CN 211576549U CN 202020621063 U CN202020621063 U CN 202020621063U CN 211576549 U CN211576549 U CN 211576549U
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Abstract
The utility model relates to a running test device of a speed reducer, which comprises a motor, a three-jaw chuck, a first connecting frame, a second connecting frame and a positioning piece, wherein the three-jaw chuck is arranged on an output shaft of the motor and can rotate along with the output shaft, and a jaw of the three-jaw chuck is clamped with a low-speed shaft of the speed reducer; a first link is disposed between the motor and the three-jaw chuck; the second connecting frame is arranged at one end of the first connecting frame, is positioned at one side of the motor, and is provided with a positioning groove at one end far away from the motor; the setting element includes third connecting plate and bumping post, the third connecting plate sets up the second link to with reduction gear fixed connection, the bumping post penetrates the constant head tank. The utility model discloses do not need the assembly and dismantle the shaft coupling, do not relate to the axiality alignment, only lean on the low-speed axle of three-jaw chuck card jail reduction gear, utilize the motor to drive the reduction gear and rotate, can carry out reduction gear running test.
Description
Technical Field
The utility model relates to an equipment is drive arrangement technical field for the loading test, especially relates to a reduction gear operation test device.
Background
The speed reducer needs to be subjected to an idle test or a loading test in the overhaul process, the implementation mode comprises the steps that the speed reducer is connected with a motor through a coupler, the motor drives the speed reducer to perform an operation test, during the test, the requirement on the coaxiality between a motor shaft and a high-speed shaft of the speed reducer is higher, so that two half couplers are required to be fixed at the output shaft ends of the motor and the speed reducer respectively, then the two half couplers are aligned, the two half couplers are rotated, a straight ruler is used for measuring the outer cylindrical surface of the couplers, the two couplers are not eccentric, and simultaneously, a feeler gauge is used for measuring the end surfaces of the two half couplers, so that the gap meets the requirement and is equal.
Adopt above-mentioned mode to test the reduction gear, need fix the axle head at the play of motor and reduction gear respectively with the two half couplings, through adding the pad, removing the pad, the relative position that moves between motor and reduction gear, footing bolt-up adjusts steps such as the two half couplings well, just can test, experimental back of accomplishing still needs to tear down interim shaft coupling. The processes of assembling and disassembling the temporary coupling are wasted time and labor.
SUMMERY OF THE UTILITY MODEL
Technical purpose
The utility model aims at the above-mentioned at least some defects, provide a reduction gear operation test device to need assemble, dismantle the shaft coupling among the solution prior art reduction gear operation test process, the complicated problem of alignment process.
(II) technical scheme
In order to achieve the above object, the utility model provides a reduction gear operation test device, include:
a motor;
the three-jaw chuck is arranged on the output shaft of the motor and can rotate along with the output shaft, and jaws of the three-jaw chuck are clamped with the low-speed shaft of the speed reducer;
a first link frame disposed between the motor and the three-jaw chuck;
the second connecting frame is arranged at one end of the first connecting frame, is positioned at one side of the motor, and is provided with a positioning groove at one end far away from the motor;
the positioning piece comprises a third connecting plate and a stop post, the third connecting plate is arranged on the second connecting frame and fixedly connected with the speed reducer, and the stop post penetrates into the positioning groove.
Preferably, the first link frame includes:
a first connecting plate;
the connecting flange is arranged at one end of the first connecting plate and is provided with a first through hole with the diameter matched with the positioning cylinder of the motor and a plurality of second through holes with the positions matched with the positions of the flange holes of the motor;
and the second connecting plate is arranged at the other end of the first connecting plate, is vertical to the first connecting plate and is provided with a plurality of third through holes.
Preferably, the second link frame includes:
a plurality of first key grooves matched with the third through holes in position are formed in one end, close to the first connecting frame, of the channel steel, a first square groove is formed in the other end of the channel steel, and the width of the first square groove is matched with the diameter of the stop pillar;
the column sleeving plate is arranged at one end, far away from the motor, of the channel steel, a second square groove is formed in one side, close to the three-jaw chuck, of the second square groove, and the width of the second square groove is matched with the diameter of the retaining column and used for penetrating into the retaining column.
Preferably, the motor further comprises a supporting mechanism, and the supporting mechanism is arranged below the motor.
Preferably, the support mechanism includes:
the third connecting frame is arranged below the motor and comprises angle iron and a guide sleeve, the top of the angle iron is connected with the first connecting frame, and the guide sleeve is arranged at the bottom of the angle iron;
the upper end of the screw rod penetrates through the guide sleeve, the lower end of the screw rod is provided with a chassis, and the middle part of the screw rod is sleeved with a nut;
and the spring is arranged between the guide sleeve and the nut.
Preferably, the three-jaw chuck comprises an active part and a passive part;
one end of the driving part is used for being connected with an output shaft of the motor, and the other end of the driving part is provided with a connecting part used for being connected with the driven part;
the driven part comprises a driven body, a hoop and three clamping jaws;
one end of the driven body is matched with the connecting part and used for connecting the driving part, the other end of the driven body is provided with at least three third circular holes which are arranged along the radial direction and used for penetrating through the clamping jaws, and the middle section of the driven body is provided with an external thread section and used for connecting the clamping hoop;
one end of each clamping jaw is provided with a conical surface body, the other end of each clamping jaw is provided with a clamping groove, the clamping jaws are respectively arranged in the third round holes in a penetrating mode, and the conical surface bodies face outwards;
the clamp sleeve is arranged on the outer side of the driven body, one end of the clamp sleeve is provided with an internal thread section matched with the external thread section, the clamp sleeve is used for being connected with the driven body through threads, the other end of the clamp sleeve is provided with a taper hole section with the inner diameter gradually increased, the slope of the taper hole section is matched with the taper of the taper body, and the clamp sleeve is used for being matched with the clamping jaw and clamped with the low-speed shaft.
Preferably, in the three-jaw chuck, one end of the driving part is provided with a first round hole, and the first round hole is arranged along the axial direction of the driving part and is used for being connected with an output shaft of the motor.
Preferably, in the three-jaw chuck, the connecting part arranged at the other end of the driving part is an inner tooth section, and one end of the driven part is a crowned tooth matched with the inner tooth section.
Preferably, in the three-jaw chuck, a second round hole is formed in the other end of the driven body, and the second round hole is axially formed along the driven body.
Preferably, in the three-jaw chuck, the driven member further includes a locknut, and the locknut is disposed on one side of the hoop close to the driving member and in threaded connection with the external thread section.
(III) advantageous effects
The above technical scheme of the utility model has following advantage: the utility model provides a reduction gear operation test device, the device do not need the assembly and dismantle the shaft coupling, do not relate to the axiality alignment, only lean on the low-speed axle of the three-jaw chuck card jail reduction gear that the motor drove, utilize the motor to drive the reduction gear and rotate, can effectively simplify reduction gear operation test.
Drawings
FIG. 1 is a first isometric view of a reducer operation test apparatus according to an embodiment of the present invention;
FIG. 2 is a second axial view of the device for testing the operation of the speed reducer according to the embodiment of the present invention;
FIG. 3 is a first axial view of the reducer operation testing apparatus according to an embodiment of the present invention in an applied state;
FIG. 4 is a second axial view of the reducer operation testing apparatus according to an embodiment of the present invention in an applied state;
FIG. 5 is a front view of the reducer operation testing apparatus according to an embodiment of the present invention in an applied state;
FIG. 6 is a plan view showing an applied state of the running test apparatus for a decelerator in FIG. 5;
fig. 7 is an isometric view of a first link in an embodiment of the present invention;
fig. 8 is an isometric view of a second link in an embodiment of the present invention;
FIG. 9 is an axial view of a positioning member according to an embodiment of the present invention;
FIG. 10 is an isometric view of a support mechanism according to an embodiment of the present invention;
in the figure: 1: a support mechanism; 2: a motor; 3: a first connecting frame; 4: a three-jaw chuck; 5: a second link frame; 6: a positioning member; 7: a third bolt; 8: a second bolt; 9: a first bolt; 10: a low speed shaft; 11: an output shaft cover; 12: a speed reducer; 13: a fourth bolt; 14: a second connecting plate; 15: a third through aperture; 16: a first connecting plate; 17: a second through aperture; 18: a first through aperture; 19: a connecting flange; 20: sleeving a column plate; 21: a second square groove; 22: a first square groove; 23: channel steel; 24: a first key-shaped groove; 25: a third connecting plate; 26: a second key-shaped groove; 27: a bumping post; 28: a fourth through aperture; 29: angle iron; 30: a third connecting frame; 31: a guide sleeve; 32: a spring; 33: a nut; 34: a lead screw; 35: a hexagonal section; 36: a chassis.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 10, an embodiment of the present invention provides a reduction gear operation testing apparatus, which includes a motor 2, a three-jaw chuck 4, a first connecting frame 3, a second connecting frame 5 and a positioning member 6. Specifically, wherein:
the motor 2 is used to provide a driving force, and preferably an emulsion motor may be used. The three-jaw chuck 4 is arranged on the output shaft of the motor 2 and can rotate along with the output shaft of the motor 2, and the jaws of the three-jaw chuck 4 are clamped with the low-speed shaft 10 of the speed reducer 12. The motor 2 rotates to drive the three-jaw chuck 4 to rotate, and further drives the speed reducer 12 to rotate, so that the running test of the speed reducer can be carried out.
The first connecting frame 3 is arranged between the motor 2 and the three-jaw chuck 4, one side of the first connecting frame is connected with the motor 2, and the other side of the first connecting frame is connected with the three-jaw chuck 4. The second link frame 5 is provided at one end of the first link frame 3. Preferably, as shown in fig. 2, the first link 3 may be connected at one end to a flange of the motor 2 by a first bolt 9, and at the other end to the second link 5 by a second bolt 8.
As shown in fig. 1 and 2, the second connecting frame 5 is located on one side of the motor 2, and one end of the second connecting frame, which is far away from the motor 2, is provided with a positioning groove.
As shown in fig. 1 and 9, the positioning member 6 includes a third connecting plate 25 and a blocking pillar 27 provided on the third connecting plate 25, the third connecting plate 25 is provided on the second connecting frame 5 and is fixedly connected to the speed reducer 12, and the third connecting plate 25 can be fastened to the output shaft cover 11 at the end of the low speed shaft 10 of the speed reducer 12 by a third bolt 7, for example. The stop pillar 27 penetrates into the positioning slot to stop the rotation of the motor 2 housing, i.e. the stop pillar 27 is a positioning shaft for stopping the rotation of the motor 2 housing, when in use, the motor 2 will be supported by the positioning member 6, and the rotation of the motor 2 can be used to drive the reducer 12 to rotate from the low-speed end.
The utility model provides a reduction gear operation test device need not the assembly and dismantles the shaft coupling, does not relate to the axiality alignment, can effectively simplify reduction gear operation test, saves artifical and test time.
As shown in fig. 7, the first connecting frame 3 preferably includes a first connecting plate 16, a connecting flange 19, and a second connecting plate 14. Wherein, a connecting flange 19 is arranged at one end of the first connecting plate 16, a first through hole 18 with a diameter matched with the positioning column of the motor 2 and a plurality of second through holes 17 with positions matched with the flange holes of the motor 2 are arranged on the connecting flange 19, each second through hole 17 is arranged around the first through hole 18, so that after the positioning column of the motor 2 is arranged through the first through hole 18, the first connecting frame 3 is fixedly connected with the motor 2 through each second through hole 17.
The second connecting plate 14 is disposed at the other end of the first connecting plate 16, that is, at the end of the first connecting plate 16 far from the connecting flange 19, is perpendicular to the first connecting plate 16, and is provided with a plurality of third through holes 15, and the third through holes 15 are disposed at the periphery of the second connecting plate 14 for being fixedly connected with the second connecting frame 5.
As shown in fig. 8, the second link frame 5 preferably includes a channel steel 23 and a column plate 20. Wherein, one end of the channel steel 23 close to the first connecting frame 3 is provided with a plurality of first key-shaped grooves 24 which are matched with the third through holes 15 on the second connecting plate 14 at the positions and are used for being fixedly connected with the second connecting plate 14. The channel 23 is preferably arranged parallel to the motor 2, and each first key groove 24 is preferably arranged parallel to the channel 23, so as to reserve a certain space for adjusting the relative positions of the first connecting frame 3 and the second connecting frame 5. The other end of the channel steel 23 is provided with a first square groove 22, and the width of the first square groove 22 is matched with the diameter of the stop column 27.
The stud plate 20 is provided at an end of the channel 23 remote from the motor 2, i.e. remote from the first connecting frame 3. The inner side of the column sleeving plate 20, namely the side thereof close to the three-jaw chuck 4, is provided with a second square groove 21, and the width of the second square groove 21 is matched with the diameter of the retaining column 27 and is used for penetrating into the retaining column 27. The first square groove 22 and the second square groove 21 form a positioning groove of the second connecting frame 5, the blocking column 27 is clamped by the groove walls of the second square groove 21 and the first square groove 22, namely, the blocking column 27 of the positioning piece 6 limits the second connecting frame 5, and the specific position of the blocking column 27 can be adjusted according to actual requirements so as to better prevent the motor 2 shell from rotating.
As shown in fig. 9, the blocking pillar 27 is preferably vertically welded to the middle of the third connecting plate 25, and second key grooves 26 are formed at both ends of the third connecting plate 25, so as to fixedly connect the third connecting plate 25 to the speed reducer. The second key groove 26 is preferably provided along the length of the third connecting plate 25.
In some preferred embodiments, the device for testing the running of the speed reducer further comprises a supporting mechanism 1, wherein the supporting mechanism 1 is arranged below the motor 2 and used for supporting the motor 2 to enable an output shaft of the motor 2 to be kept opposite to the low-speed shaft 10, and the lateral pressure applied to the three-jaw chuck 4 by the self weight of the motor 2 is avoided.
As shown in fig. 10, preferably, the support mechanism 1 includes: a third connecting bracket 30, a lead screw 34 and a spring 32. The third connecting frame 30 is arranged below the motor 2 and comprises an angle iron 29 and a guide sleeve 31, the top of the angle iron 29 is connected with the first connecting frame 3, and the guide sleeve 31 is arranged at the bottom of the angle iron 29. Further, the top of the angle iron 29 is provided with a fourth through hole 28 connected with the second through hole 17 at the bottom of the connecting flange 19 in the first connecting frame 3 by a fourth bolt 13.
The upper end of the screw rod 34 is arranged in the guide sleeve 31 in a penetrating way, the lower end is provided with a chassis 36, and the middle part is sleeved with a nut 33 for limiting. Further, the lower end of the screw 34 is fixedly connected with the top surface of the chassis 36 through a hexagonal section 35.
The spring 32 is disposed between the guide sleeve 31 and the nut 33, and is used for elastically supporting the motor 2 through the third connecting frame 30 by using the elastic force of the spring 32, so as to balance the falling gravity of the motor 2.
At the time of installation, the first link 3 may be fastened to one end of the motor 2 using the first bolt 9, then the three-jaw chuck 4 may be assembled to the output shaft of the motor 2, 3 jaws of the three-jaw chuck 4 may be adjusted, and the three-jaw chuck 4 may be fastened to one end of the low speed shaft 10 such that the three-jaw chuck 4 and the motor 2 are brought into a coaxial state with the low speed shaft 10. The bottom of the motor 2 is connected with the second through hole 17 at the bottom of the connecting flange 19 in the first connecting frame 3 through the fourth bolt 13, a lead screw 34 is inserted into the guide sleeve 31, a spring 32 is assembled between the guide sleeve 31 and the nut 33, the nut 33 is screwed upwards to press the spring 32, and the elastic force of the spring 32 balances the falling gravity of the motor 2. A retainer 6 is fastened to one end of the output shaft cover 11 by two third bolts 7. Finally, the second square groove 21 and the first square groove 22 of the second connecting frame 5 are sleeved on a proper position on the stop pillar 27 of the positioning member 6, and the second connecting frame 5 is fastened at one end of the first connecting frame 3 by using the second bolt 8.
When the device is used, the reversing valve is operated to enable the motor 2 to rotate, the motor 2 can drive the low-speed shaft 10 to rotate through the three-jaw chuck 4, the running test of the speed reducer 12 is achieved, and the positioning piece 6 bears the reverse acting force of the shell of the motor 2 during the running of the speed reducer 12.
In some preferred embodiments, in order to better adapt to low-speed shafts 10 with different shaft diameters, the utility model discloses a three-jaw chuck 4 that can realize reducing coupling is still provided, including driving piece and driven piece, wherein, specifically:
one end of the driving part is connected with an output shaft of the motor 2, and the other end of the driving part is provided with a connecting part used for being connected with the driven part.
The driven part comprises a driven body, a hoop and three clamping jaws; wherein, driven body one end matches with connecting portion for connect the driving piece, the other end is equipped with the radial third round hole that sets up of at least three edge driven body, is used for wearing to establish the jack catch, and driven body middle section is equipped with the external screw thread section, is used for connecting the clamp. And one end of each clamping jaw is provided with a conical surface body, the other end of each clamping jaw is provided with a clamping groove, each clamping jaw is respectively penetrated in each third round hole, and the conical surface bodies face outwards. The clamp sleeve is arranged on the outer side of the driven body, one end of the clamp sleeve is provided with an internal thread section matched with the external thread section and used for being in threaded connection with the driven body, the other end of the clamp sleeve is provided with a taper hole section with the inner diameter gradually increased, the inclination of the taper hole section is matched with the taper of the taper surface body and used for being matched with the clamping jaw to realize clamping connection of the low-speed shaft 10.
Preferably, in the three-jaw chuck 4, one end of the driving part is provided with a first round hole, and the first round hole is arranged along the axial direction of the driving part and is used for being connected with the output shaft of the motor 2.
Preferably, in the three-jaw chuck 4, the connecting portion arranged at the other end of the driving part is an inner tooth section, one end of the driven part is a crown tooth matched with the inner tooth section, and the driving part and the driven part can be connected through the matching of the inner tooth section and the crown tooth.
Preferably, in the three-jaw chuck 4, the other end of the driven body is provided with a second round hole, and the second round hole is axially arranged along the driven body and is used for inserting the low-speed shaft 10 so as to facilitate the connection of the low-speed shaft 10.
Preferably, in the three-jaw chuck 4, the driven member further includes a locknut, and the locknut is disposed on one side of the clamp close to the driving member and is in threaded connection with the external thread section. Through setting up locknut, can utilize the locknut who screws up to further prevent that the clamp is not hard up to retreat, ensure three jack catch and low-speed axle 10 chucking.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A running test device for a speed reducer is characterized by comprising:
a motor (2);
the three-jaw chuck (4) is arranged on the output shaft of the motor (2), can rotate along with the output shaft, and jaws of the three-jaw chuck are clamped with a low-speed shaft (10) of the speed reducer;
a first connecting frame (3) arranged between the motor (2) and the three-jaw chuck (4);
the second connecting frame (5) is arranged at one end of the first connecting frame (3), is positioned on one side of the motor (2), and is provided with a positioning groove at one end far away from the motor (2);
the positioning piece (6) comprises a third connecting plate (25) and a stop column (27), the third connecting plate (25) is arranged on the second connecting frame (5) and is fixedly connected with the speed reducer, and the stop column (27) penetrates into the positioning groove.
2. A decelerator running test apparatus according to claim 1, wherein the first link frame (3) includes:
a first connecting plate (16);
the connecting flange (19) is arranged at one end of the first connecting plate (16) and is provided with a first through hole (18) with the diameter matched with the positioning cylinder of the motor (2) and a plurality of second through holes (17) with the positions matched with the positions of the flange holes of the motor (2);
and the second connecting plate (14) is arranged at the other end of the first connecting plate (16), is vertical to the first connecting plate (16), and is provided with a plurality of third through holes (15).
3. A decelerator running test apparatus according to claim 2, wherein the second link bracket (5) includes:
a channel steel (23), one end of which close to the first connecting frame (3) is provided with a plurality of first key grooves (24) matched with the third through holes (15), the other end of which is provided with a first square groove (22), and the width of the first square groove (22) is matched with the diameter of the stop pillar (27);
the sleeve column plate (20) is arranged at one end of the motor (2) far away from the channel steel (23), a second square groove (21) is formed in one side, close to the three-jaw chuck (4), of the three-jaw chuck (4), the width of the second square groove (21) is matched with the diameter of the retaining column (27) and used for penetrating into the retaining column (27).
4. A decelerator running test apparatus according to claim 1, wherein:
the motor is characterized by further comprising a supporting mechanism (1), wherein the supporting mechanism (1) is arranged below the motor (2).
5. A decelerator running test device according to claim 4, wherein the support mechanism (1) includes:
the third connecting frame (30) is arranged below the motor (2) and comprises an angle iron (29) and a guide sleeve (31), the top of the angle iron (29) is connected with the first connecting frame (3), and the guide sleeve (31) is arranged at the bottom of the angle iron (29);
the upper end of the screw rod (34) penetrates through the guide sleeve (31), the lower end of the screw rod is provided with a chassis (36), and the middle part of the screw rod is sleeved with a nut (33);
a spring (32) disposed between the guide sleeve (31) and the nut (33).
6. The running test device of the speed reducer according to claim 1, wherein the three-jaw chuck (4) comprises a driving piece and a driven piece;
one end of the driving part is used for being connected with an output shaft of the motor (2), and the other end of the driving part is provided with a connecting part used for being connected with the driven part;
the driven part comprises a driven body, a hoop and three clamping jaws;
one end of the driven body is matched with the connecting part and used for connecting the driving part, the other end of the driven body is provided with at least three third circular holes which are arranged along the radial direction and used for penetrating through the clamping jaws, and the middle section of the driven body is provided with an external thread section and used for connecting the clamping hoop;
one end of each clamping jaw is provided with a conical surface body, the other end of each clamping jaw is provided with a clamping groove, the clamping jaws are respectively arranged in the third round holes in a penetrating mode, and the conical surface bodies face outwards;
the clamp sleeve is arranged on the outer side of the driven body, one end of the clamp sleeve is provided with an internal thread section matched with the external thread section, the clamp sleeve is used for being connected with the driven body through threads, the other end of the clamp sleeve is provided with a taper hole section with the inner diameter gradually increased, the inclination of the taper hole section is matched with the taper of the taper body, and the clamp sleeve is used for being matched with the clamping jaw and clamped with the low-speed shaft (10).
7. The running test device of the speed reducer according to claim 6, wherein a first round hole is formed in one end of the driving part in the three-jaw chuck (4), and the first round hole is formed in the axial direction of the driving part and is used for being connected with an output shaft of the motor (2).
8. The running test device of the speed reducer according to claim 7, wherein in the three-jaw chuck (4), the connecting part arranged at the other end of the driving part is an internal tooth section, and one end of the driven part is a crowned tooth matched with the internal tooth section.
9. The running test device of the speed reducer according to claim 8, wherein a second circular hole is formed in the other end of the driven body in the three-jaw chuck (4), and the second circular hole is formed in the axial direction of the driven body.
10. The running test device of the speed reducer according to claim 6, wherein in the three-jaw chuck (4), the driven member further comprises a locknut, and the locknut is arranged on one side of the clamp close to the driving member and is in threaded connection with the external thread section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020621063.XU CN211576549U (en) | 2020-04-23 | 2020-04-23 | Running test device for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020621063.XU CN211576549U (en) | 2020-04-23 | 2020-04-23 | Running test device for speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211576549U true CN211576549U (en) | 2020-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020621063.XU Active CN211576549U (en) | 2020-04-23 | 2020-04-23 | Running test device for speed reducer |
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| Country | Link |
|---|---|
| CN (1) | CN211576549U (en) |
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2020
- 2020-04-23 CN CN202020621063.XU patent/CN211576549U/en active Active
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