CN216922907U - Coupling mechanism for delivery test of hydraulic pump and delivery test bench of hydraulic pump - Google Patents
Coupling mechanism for delivery test of hydraulic pump and delivery test bench of hydraulic pump Download PDFInfo
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- CN216922907U CN216922907U CN202220027794.0U CN202220027794U CN216922907U CN 216922907 U CN216922907 U CN 216922907U CN 202220027794 U CN202220027794 U CN 202220027794U CN 216922907 U CN216922907 U CN 216922907U
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 230000008878 coupling Effects 0.000 title claims abstract description 44
- 238000010168 coupling process Methods 0.000 title claims abstract description 44
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model discloses a coupling mechanism for delivery test of a hydraulic pump and a delivery test bench of the hydraulic pump, wherein the coupling mechanism for delivery test of the hydraulic pump comprises a first connecting sleeve, and a first end of the first connecting sleeve is provided with a first internal spline for connecting with one of a motor output shaft and an external extension shaft of a pump to be tested; the first end of the second connecting sleeve is provided with a second internal spline which is used for being connected with the other one of the output shaft of the motor and the outer extending shaft of the pump to be tested; wherein, the second end of first adapter sleeve and the second end of second adapter sleeve are provided with drive pin and locating pin hole respectively, and the axial location cooperation of first adapter sleeve can be followed to drive pin and locating pin hole. According to the utility model, the first connecting sleeve and the second connecting sleeve are respectively assembled and disassembled with the motor output shaft and the tested pump overhung shaft, and the first connecting sleeve and the second connecting sleeve are in transmission connection through the axial positioning matching of the transmission pin and the positioning pin hole, so that the assembly and disassembly of the tested pump overhung shaft are facilitated, and the testing efficiency is further improved.
Description
Technical Field
The utility model relates to the technical field of delivery test of hydraulic pumps, in particular to a coupling mechanism for delivery test of a hydraulic pump.
Background
The hydraulic pump is the most important element in a hydraulic system and functions to convert the mechanical energy of an engine into the static pressure energy of a working fluid. In order to ensure that the performance of each hydraulic pump meets the requirements, the performance delivery test of each hydraulic pump needs to be carried out after the product is assembled, the performance test is carried out on the delivery test bench, the test bench is mainly formed by connecting an output shaft of a motor with the tested hydraulic pump through a coupler, the inlet of the hydraulic pump is connected with an oil tank, the outlet of the hydraulic pump is connected with a load valve or a motor and the like, and the delivery performance test of the hydraulic pump can be carried out by simulating the working condition of a host machine approximately.
The hydraulic pumps to be subjected to factory detection are large in number, the tested pumps need to be rapidly assembled and disassembled to improve the testing efficiency, the input shafts of the hydraulic pumps and the output shafts of the motors need to be rapidly and accurately connected in the installation process, and high requirements are provided for the structure and the precision of the coupler.
At present, an output shaft of a motor on a test board and an overhanging shaft of a tested pump are respectively provided with an external spline, two ends of a coupler for connecting the output shaft of the motor and the two ends of the coupler for connecting the tested hydraulic pump are respectively provided with an internal spline, the coupler and the output shaft of the motor and the overhanging shaft of the tested pump are respectively and rigidly connected through the splines, and during testing, the coupler is required to be sequentially assembled and disassembled with the output shaft of the motor and the overhanging shaft of the tested pump, so that the assembly and disassembly are inconvenient, and the testing efficiency is influenced.
In addition, the shaft coupling has high requirements on the coaxiality of the external extending shaft of the tested pump and the output shaft of the motor, and high requirements on the processing and the installation of the shaft coupling are provided. The pump needs to be centered when being installed on the test bed, which is time-consuming.
When the hydraulic pump is locked due to faults or the overpressure of the loading valve occurs, the motor is difficult to stop in time, and the impact on the motor is large due to the rigid connection of the outward extending shaft of the pump and the motor, so that the service life of the motor is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a coupling mechanism for a factory test of a hydraulic pump, so as to facilitate the disassembly and assembly of an external shaft of a pump to be tested, thereby improving the testing efficiency.
The utility model also aims to disclose a delivery test bench of the hydraulic pump, which is provided with the coupling mechanism for delivery test of the hydraulic pump.
In order to achieve the purpose, the utility model discloses the following technical scheme:
the utility model provides a hydraulic pump delivery test is with coupling mechanism, includes:
the first end of the first connecting sleeve is provided with a first internal spline for being connected with one of an output shaft of the motor and an external extending shaft of the pump to be tested;
the first end of the second connecting sleeve is provided with a second internal spline which is used for being connected with the other one of the output shaft of the motor and the external extending shaft of the pump to be tested;
the second end of the first connecting sleeve and the second end of the second connecting sleeve are respectively provided with a driving pin and a positioning pin hole, and the driving pin and the positioning pin hole can be matched in a positioning mode along the axial direction of the first connecting sleeve.
Preferably, in the above coupling mechanism, the driving pin is telescopically disposed on the first connecting sleeve or the second connecting sleeve through a spring; when the spring is compressed, the driving pin can retract into the connecting sleeve, and the spring has restoring force for driving the driving pin to extend out of the connecting sleeve.
Preferably, in the above coupling mechanism, the first connecting sleeve includes a first sleeve for sleeving the output shaft of the motor, a first end of the first sleeve is provided with the first internal spline, a second end of the first sleeve is provided with an installation pin hole, the driving pin is axially movably disposed in the installation pin hole, and the spring is disposed between the driving pin and the bottom of the installation pin hole.
Preferably, in the coupling mechanism, a positioning shoulder is arranged on the outer peripheral surface of the transmission pin, one end of the spring abuts against a positioning surface at the bottom of the mounting pin hole, and the other end of the spring abuts against the positioning shoulder.
Preferably, in the coupling mechanism, the diameter of the extending section of the transmission pin is smaller than the diameter of the mounting pin hole, the extending section is in sliding fit with the mounting pin hole through a limiting sleeve, and the limiting sleeve is fixedly connected with the mounting pin hole.
Preferably, in the coupling mechanism, the limiting sleeve is fixedly connected with the mounting pin hole through interference fit.
Preferably, in the above coupling mechanism, the first sleeve is provided with an auxiliary bearing for rotatably matching with the test table.
Preferably, in the coupling mechanism, the second connection sleeve includes a second sleeve for sleeving the external shaft of the pump to be tested, the second sleeve is provided with the second internal spline and an axial fixing hole which is arranged on the central axis and extends in the axial direction, the axial fixing hole is used for being fixedly connected with an axial threaded hole in the external shaft of the pump to be tested, and a second end of the second sleeve is provided with the positioning pin hole.
Preferably, in the above coupling mechanism, the plurality of driving pins are uniformly arranged along a circumferential direction of the first connecting sleeve.
According to the technical scheme, the coupling mechanism for the delivery test of the hydraulic pump comprises a first connecting sleeve, wherein a first inner spline for being connected with one of an output shaft of a motor and an outward extending shaft of a tested pump is arranged at the first end of the first connecting sleeve; the first end of the second connecting sleeve is provided with a second internal spline which is used for being connected with the other one of the output shaft of the motor and the external extending shaft of the pump to be tested; the second end of the first connecting sleeve and the second end of the second connecting sleeve are respectively provided with a driving pin and a positioning pin hole, and the driving pin and the positioning pin hole can be matched along the axial positioning of the first connecting sleeve.
When the hydraulic pump leaves a factory for testing, firstly, a first internal spline of a first connecting sleeve and a second internal spline of a second connecting sleeve are respectively connected with an output shaft of a motor and an external spline on an external extending shaft of a tested pump; and then, the second end of the first connecting sleeve and the transmission pin and the positioning pin hole of the second end of the second connecting sleeve are matched in a positioning way along the axial direction of the first connecting sleeve, so that the transmission connection between the output shaft of the motor and the external extending shaft of the tested pump is realized.
According to the utility model, the first connecting sleeve and the second connecting sleeve are respectively assembled and disassembled with the output shaft of the motor and the overhanging shaft of the tested pump, and the first connecting sleeve and the second connecting sleeve are in transmission connection through the axial positioning matching of the transmission pin and the positioning pin hole, so that the overhanging shaft of the tested pump can be conveniently assembled and disassembled, and the testing efficiency is further improved.
The utility model also discloses a delivery test bench of the hydraulic pump, which comprises a support bench, a motor arranged on the support bench, and a coupling mechanism for any delivery test of the hydraulic pump, wherein an output shaft of the motor is in running fit with the support bench, and a first connecting sleeve or a second connecting sleeve of the coupling mechanism is sleeved on the output shaft.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions in the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first connecting sleeve assembled on an output shaft of a motor according to the embodiment of the utility model;
FIG. 2 is a schematic structural diagram of a pump under test according to an embodiment of the present disclosure;
fig. 3 is a front view of a second connecting sleeve disclosed in the embodiment of the present invention;
fig. 4 is a sectional view of a second connecting sleeve disclosed in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of the second connecting sleeve assembled on the outer extending shaft of the pump to be tested according to the embodiment of the utility model.
Detailed Description
The embodiment of the utility model discloses a coupling mechanism for delivery test of a hydraulic pump, which is convenient for dismounting an outward extending shaft of a tested pump, thereby improving the test efficiency.
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 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the coupling mechanism for delivery test of a hydraulic pump disclosed in the embodiment of the present invention includes a first connecting sleeve, a first end of which is provided with a first internal spline 51 for coupling with one of the output shaft 1 of a motor and the external shaft 9 of a pump to be tested; a second connecting sleeve, wherein a first end of the second connecting sleeve is provided with a second internal spline 102 for being connected with the other one of the output shaft 1 of the motor and the external extending shaft 9 of the pump to be tested; wherein, the second end of first adapter sleeve and the second end of second adapter sleeve are provided with drive pin 7 and location pinhole 101 respectively, and drive pin 7 and location pinhole 101 can be followed the axial location cooperation of first adapter sleeve.
When the hydraulic pump leaves a factory for testing, firstly, a first internal spline 51 of a first connecting sleeve and a second internal spline 102 of a second connecting sleeve are respectively connected with an output shaft 1 of a motor and an external spline on an external extending shaft 9 of a tested pump; and then, the second end of the first connecting sleeve and the driving pin 7 and the positioning pin hole 101 at the second end of the second connecting sleeve are matched in a positioning mode along the axial direction of the first connecting sleeve, so that the driving connection of the output shaft 1 of the motor and the outward extending shaft 9 of the pump to be tested is realized.
The external extending shaft 9 of the tested pump is used as a power input shaft and is provided with an external spline, and the motor is input by the rotation of the shaft to drive the pump to rotate so as to transmit energy.
According to the utility model, the first connecting sleeve and the second connecting sleeve are respectively assembled and disassembled with the output shaft 1 of the motor and the outward extending shaft 9 of the tested pump, and the first connecting sleeve and the second connecting sleeve are in transmission connection through the axial positioning matching of the transmission pin 7 and the positioning pin hole 101, so that the outward extending shaft 9 of the tested pump is convenient to assemble and disassemble, and the testing efficiency is further improved.
In addition, the first connecting sleeve and the second connecting sleeve are in transmission connection through axial positioning matching of the transmission pin 7 and the positioning pin hole 101, so that the tested pump is easy to center during assembly.
Preferably, the driving pin 7 is telescopically arranged on the first connecting sleeve or the second connecting sleeve by a spring 6; wherein, when the spring 6 is compressed, the driving pin 7 can be retracted inside the connecting sleeve and the spring 6 has a restoring force that drives the driving pin 7 to extend out of the connecting sleeve. According to the utility model, the spring 6 is utilized to enable part of the transmission pin 7 to extend out of the end face of the connecting sleeve along the axial direction of the transmission pin, and the extending part is inserted into the positioning pin hole 101 during a test, so that circumferential limiting and fixing are realized.
Therefore, when the tested pump is installed on the test bench, if the centering is not accurate, the transmission pin 7 can be extruded and retracted into the end surface of the connecting sleeve by the end surface of the connecting sleeve provided with the positioning pin hole 101, and the transmission pin 7 can compress the spring 6 and is not inserted into the positioning pin hole 101, so that hard contact is avoided; when the motor rotates slowly, the driving pin 7 is pushed into the positioning pin hole 101 by the elastic force generated by the spring 6 after rotating a certain angle, and centering installation is automatically completed. When the tested pump is blocked to stop rotating or the load is overlarge, the motor cannot be stopped in time, the transmission pin 7 can be damaged by shearing force, and the effects of vibration reduction and motor protection are achieved.
Therefore, the motor can automatically center when rotating at low speed without manual centering, so that the testing efficiency is further improved; meanwhile, the spring 6 is helpful for the driving pin 7 to slide out of the positioning pin hole 101 under the chamfering action of the extending end of the driving pin 7 through the compression spring 6 when an emergency situation occurs, such as overload or stalling of a pump, so that the transmission torque is prevented from being overlarge, a motor and a test bed system are protected, and the service life of the test bed is prolonged.
As shown in fig. 1, the first connection sleeve comprises a first sleeve 5 for externally covering the output shaft 1 of the motor, a first end of the first sleeve 5 is provided with a first internal spline 51, a second end of the first sleeve 5 is provided with a mounting pin hole, a driving pin 7 is axially movably arranged in the mounting pin hole, and a spring 6 is arranged between the driving pin 7 and the bottom of the mounting pin hole.
The output shaft 1 of the motor is connected with the motor through a flat key, and the output shaft 1 of the motor is connected with the first sleeve 5 through an external spline. In the test process, the output shaft 1 of the motor is driven to rotate through the motor, the output shaft 1 of the motor drives the first sleeve 5 to rotate, and then the second sleeve and the tested pump are driven to rotate through the transmission pin 7.
It will be appreciated that the utility model also contemplates that the first coupling sleeve may be externally sleeved on the stub shaft 9 of the pump under test.
In order to improve the working stability of the spring 6, a positioning shaft shoulder is arranged on the outer peripheral surface of the transmission pin 7, one end of the spring 6 abuts against a positioning surface at the bottom of the mounting pin hole, and the other end of the spring abuts against the positioning shaft shoulder. At the moment, the two ends of the spring 6 are axially positioned through the positioning shoulders and the positioning surfaces at the bottoms of the mounting pin holes, and part of the spring 6 is sleeved outside the transmission pin 7 and positioned on the inner side of the positioning shoulders to position the central axis of the spring 6, so that the precision of the spring 6 in the stretching direction is ensured. It can be understood that the positioning column arranged in the spring 6 can be directly arranged at the bottom of the mounting pin hole; the positioning shoulder may not be provided, and the end of the spring 6 may directly abut against the inner end surface of the driving pin 7.
In order to facilitate the assembly of the transmission pin 7, the diameter of the extending section of the transmission pin 7 is smaller than that of the mounting pin hole, the extending section is in sliding fit with the mounting pin hole through a limiting sleeve 8, and the limiting sleeve 8 is fixedly connected with the mounting pin hole.
5 terminal surfaces of first sleeve have the installation pinhole, during the assembly, earlier to the spring 6 of packing into in the installation pinhole, insert driving pin 7 in the spring 6 again, after that impress stop collar 8 in the installation pinhole and overlap and establish between the overhanging section of driving pin 7 and installation pinhole pore wall, realize that driving pin 7 is spacing, convenient assembly. Alternatively, the present invention may also provide a sealing plate directly on the end surface of the first sleeve 5 to achieve the same purpose of preventing the driving pin 7 from being separated from the mounting pin hole.
Specifically, the limiting sleeve 8 is fixedly connected with the mounting pin hole in an interference fit mode. Therefore, the fixing strength of the limiting sleeve 8 and the mounting pin hole is good, and the transmission reliability is improved. Of course, the utility model can also fix the position-limiting sleeve 8 and the fixing column of the mounting pin hole in the radial direction to realize the fixed connection of the position-limiting sleeve 8 and the mounting pin hole.
In a further technical scheme, the first sleeve 5 is sleeved with an auxiliary bearing 4 which is used for realizing the running fit with the test bench. In the test process, the auxiliary bearing 4 and the motor output shaft 1 self realize the rotation of the output shaft 1 of the motor relative to the test board together with the motor bearing 2 which is in running fit with the test board, the motor bearing 2 and the auxiliary bearing 4 support the rotation of the output shaft 1 of the motor and the first sleeve 5 respectively, and the rotation stability of the output shaft 1 of the motor and the first sleeve 5 is improved.
Specifically, the second connection sleeve comprises a second sleeve 10 for externally sleeving the external shaft 9 of the pump to be tested, the second sleeve 10 is provided with a second internal spline 102 and an axial fixing hole 103 which is arranged on the central axis and extends along the axial direction, the axial fixing hole 103 is used for being fixedly connected with an axial threaded hole 91 on the external shaft 9 of the pump to be tested, and a second end of the second sleeve 10 is provided with a positioning pin hole 101.
As shown in fig. 2, the protruding shaft 9 of the pump under test is provided with external splines and a threaded hole in the shaft end surface as a power input shaft. As shown in fig. 3-5, the second sleeve 10 has a second internal spline 102 at one end for coupling with the external spline of the pump under test, and a dowel pin hole 101 at the other end for coupling with the driving pin 7 on the first sleeve 5.
Before factory test, the second sleeve 10 is installed on a tested pump, a screw penetrates through the axial fixing hole 103 of the second sleeve 10 and is screwed into the threaded hole in the end face of the pump shaft to be tested, the second connecting sleeve is fixed on the tested pump, and the transmission connection strength of the second connecting sleeve and the tested pump is good. And a plurality of second connecting sleeves can be fixed on a plurality of pumps to be tested in a one-to-one correspondence manner, so that the testing efficiency is further improved. Of course, the present application can also be coupled with the output shaft 1 of the motor by using the second connection sleeve.
The plurality of driving pins 7 are uniformly arranged along the circumferential direction of the first connecting sleeve, and correspondingly, the plurality of positioning pin holes 101 are also in one-to-one correspondence with the driving pins 7; the power transmission reliability is improved by the positioning fit of the plurality of driving pins 7 and the plurality of positioning pin holes 101. Specifically, 5 terminal surfaces of first sleeve have 4 installation pinhole, all are equipped with a spring 6 in every installation pinhole, insert a driving pin 7 in the spring 6, and stop collar 8 is impressed in the department installation pinhole of first sleeve 5 for it is spacing for driving pin 7.
The embodiment of the utility model also discloses a delivery test bench of the hydraulic pump, which comprises a support table 3 and a motor arranged on the support table 3, wherein an output shaft of the motor is in running fit with the support table 3, the delivery test bench further comprises a coupling mechanism for the hydraulic pump provided by any one of the embodiments, a first connecting sleeve or a second connecting sleeve of the coupling mechanism is sleeved on the output shaft, so that an outward extending shaft 9 of a tested pump can be conveniently disassembled and assembled, and the test efficiency is further improved.
Specifically, when the second connecting sleeves are used for being fixed on the tested pumps, the plurality of second connecting sleeves can be fixed on the plurality of tested pumps in a one-to-one correspondence mode, and the testing efficiency is further improved. At this time, the first coupling sleeve is used for being fixed on the output shaft of the motor.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a hydraulic pump delivery test is with coupling mechanism which characterized in that includes:
a first connecting sleeve, the first end of which is provided with a first internal spline (51) for being connected with one of an output shaft (1) of the motor and an external extending shaft (9) of the tested pump;
a second connecting sleeve, wherein a first end of the second connecting sleeve is provided with a second internal spline (102) which is used for being connected with the other one of the output shaft (1) of the motor and the external extending shaft (9) of the tested pump;
the second end of the first connecting sleeve and the second end of the second connecting sleeve are respectively provided with a driving pin (7) and a positioning pin hole (101), and the driving pin (7) and the positioning pin hole (101) can be matched in an axial positioning mode of the first connecting sleeve.
2. A coupling mechanism according to claim 1, wherein the driving pin (7) is telescopically arranged on the first or second coupling sleeve by means of a spring (6); when the spring (6) is compressed, the transmission pin (7) can retract into the connecting sleeve, and the spring (6) has restoring force for driving the transmission pin (7) to extend out of the connecting sleeve.
3. A coupling mechanism according to claim 2, wherein the first coupling sleeve comprises a first sleeve (5) for sleeving the output shaft (1) of the electric motor, a first end of the first sleeve (5) is provided with the first internal spline (51), a second end of the first sleeve (5) is provided with a mounting pin hole in which the drive pin (7) is axially movably arranged, and the spring (6) is arranged between the drive pin (7) and the mounting pin hole bottom.
4. A coupling mechanism according to claim 3, wherein the outer peripheral surface of the driving pin (7) is provided with a positioning shoulder, one end of the spring (6) abuts against the positioning surface of the bottom of the mounting pin hole, and the other end of the spring abuts against the positioning shoulder.
5. A coupling mechanism according to claim 3, wherein the diameter of the outward extending section of the driving pin (7) is smaller than that of the mounting pin hole, and the outward extending section is in sliding fit with the mounting pin hole through a limiting sleeve (8), and the limiting sleeve (8) is fixedly connected with the mounting pin hole.
6. A coupling mechanism as claimed in claim 5, characterised in that the stop collar (8) is fixedly connected to the mounting pin aperture by interference fit.
7. A coupling mechanism according to claim 3, characterized in that the first sleeve (5) is fitted with an auxiliary bearing (4) for rotational engagement with the test bench.
8. A coupling mechanism according to claim 3, wherein the second connecting sleeve comprises a second sleeve (10) for sleeving the outer shaft (9) of the pump under test, the second sleeve (10) is provided with the second internal spline (102) and an axial fixing hole (103) which is arranged on the central axis and extends along the axial direction, the axial fixing hole (103) is used for fixedly connecting with an axial threaded hole (91) on the outer shaft (9) of the pump under test, and the second end of the second sleeve (10) is provided with the positioning pin hole (101).
9. A coupling mechanism according to claim 1, wherein the driving pins (7) are plural and arranged uniformly in the circumferential direction of the first coupling sleeve.
10. A delivery test bench for a hydraulic pump comprises a support bench (3) and a motor arranged on the support bench (3), wherein an output shaft (1) of the motor is matched with the support bench (3) in a rotating manner, the delivery test bench is characterized by further comprising a coupling mechanism for the hydraulic pump delivery test according to any one of claims 1-9, and a first connecting sleeve or a second connecting sleeve of the coupling mechanism is sleeved on the output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220027794.0U CN216922907U (en) | 2022-01-05 | 2022-01-05 | Coupling mechanism for delivery test of hydraulic pump and delivery test bench of hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220027794.0U CN216922907U (en) | 2022-01-05 | 2022-01-05 | Coupling mechanism for delivery test of hydraulic pump and delivery test bench of hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216922907U true CN216922907U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220027794.0U Active CN216922907U (en) | 2022-01-05 | 2022-01-05 | Coupling mechanism for delivery test of hydraulic pump and delivery test bench of hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216922907U (en) |
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- 2022-01-05 CN CN202220027794.0U patent/CN216922907U/en active Active
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Address after: No. 29 Caohu Avenue, Caohu Street, Suzhou City, Jiangsu Province, 215000 Patentee after: Suzhou Liyuan Hydraulic Co.,Ltd. Address before: No.29 Caohu Avenue, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: LIYUAN HYDRAULIC (SUZHOU) Co.,Ltd. |