CN218349789U

CN218349789U - Shafting test bed

Info

Publication number: CN218349789U
Application number: CN202221382536.0U
Authority: CN
Inventors: 秦琅; 武兴伟; 景伟; 陈武超; 魏涛; 张进; 杨尧; 谢旻; 邓俊杰; 张萌思; 贺博; 任艳彩
Original assignee: Shanghai Dahua Coupling Factory Co ltd; Shanghai Qiyao Heavy Industry Co ltd; 711th Research Institute of CSIC
Current assignee: Shanghai Dahua Coupling Factory Co ltd; Shanghai Qiyao Heavy Industry Co ltd; 711th Research Institute of CSIC
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2023-01-20
Anticipated expiration: 2032-06-02

Abstract

The embodiment of the application discloses provide a shafting test bench, cooperation design through biography torsion board and first driving piece, can apply the moment of torsion to the shafting test piece, cooperation design through first drive assembly and second driving piece, can apply thrust or pulling force to the shafting test piece, thereby realize applying moment of torsion and thrust simultaneously to the shafting test piece, perhaps apply moment of torsion and pulling force's purpose simultaneously, thereby the actual work condition of simulation shafting test piece, in order to obtain shafting test piece axial stiffness and torsional rigidity, verify, the design result of calibration shafting test piece.

Description

Shafting test bed

Technical Field

The application relates to the technical field of ship transmission, in particular to a shafting test bed.

Background

In the ship propulsion shafting, the power of a ship main engine is transmitted to the propeller through the transmission system, and meanwhile, the propeller rotates to generate thrust to be transmitted back to the ship body, so that the ship is propelled to sail. In the process, the transmission shaft of the propulsion shafting is simultaneously acted by torque and push/pull force.

At present, most of domestic test stands for testing torque and pulling/pushing force of shafting such as a transmission shaft are independently used for performing torque test or pushing/pulling force test, and a motor can be used for applying rotating speed to the transmission shaft while loading smaller torque on individual comprehensive performance test stands, so that the actual working condition is simulated. However, under the condition that the working condition of a ship propulsion shafting is complex, the transmission shaft bears both torque and push/pull force, a conventional test bed cannot well simulate the working condition, and the design results of the axial rigidity and the torsional rigidity of the transmission shaft cannot be verified.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a shafting test bench, can solve the problem that the design result of a transmission shaft can not be verified in the existing shafting test bench.

The embodiment of the application provides an shafting test bench, includes: the support is provided with a first shaft hole; the torque transmission plate is arranged opposite to the bracket, a second shaft hole corresponding to the first shaft hole is formed in the torque transmission plate, and the central axis of the second shaft hole is coaxial with the central axis of the first shaft hole; the output end of the first driving piece is connected with the torque transmission plate, and the first driving piece drives the torque transmission plate to rotate so as to generate torque; the first transmission assembly is arranged on the outer side of one surface, far away from the support, of the torque transmission plate and comprises a first transmission shaft, the central axis of the first transmission shaft is coaxial with the central axis of the second shaft hole, and one end of the first transmission shaft corresponds to the second shaft hole; the second driving piece is arranged on the outer side of one end of the torsion plate far away from the first transmission assembly, the output end of the second driving piece is connected with one end of the torsion plate far away from the first transmission shaft, and the second driving piece drives the first transmission shaft to move along the axial direction to generate thrust or pulling force.

Optionally, the first driving component and the second driving component are sequentially arranged between the torque transmission plate and the second driving component; the second transmission assembly comprises a second transmission shaft, the central axis of the second transmission shaft is coaxial with the central axis of the first transmission shaft, and one end of the second transmission shaft is connected with the first transmission shaft; the end, far away from the second transmission shaft, of the first transmission shaft corresponds to the second shaft hole, the end, far away from the first transmission shaft, of the second transmission shaft is connected with the output end of the second driving piece, and the second driving piece drives the second transmission shaft to drive the first transmission shaft to move axially.

Optionally, the first transmission assembly further includes a first housing, and the first transmission shaft penetrates through the first housing; the two ends of the first transmission shaft extend out of the outer side of the first shell respectively, and a first connecting portion used for being connected with a test piece is arranged at one end, facing the second shaft hole, of the first transmission shaft.

Optionally, the first transmission shaft located inside the first casing is sleeved with at least one cylindrical roller bearing, and when the first transmission shaft moves along the axial direction, inner rings of the two cylindrical roller bearings move along the axial direction along with the first transmission shaft respectively.

Optionally, the second transmission assembly further includes a second housing, the second transmission shaft is inserted into the second housing, one end of the second transmission shaft is located outside the second housing and connected to the first transmission shaft, the other end of the transmission shaft is located inside the second housing, and an output end of the second driving element extends into the inside of the second housing and is connected to the second transmission shaft.

Optionally, a first connecting piece is sleeved on one end of the first transmission shaft facing the second transmission shaft, a second connecting portion is arranged at the outer side end of the second casing, and the second connecting portion is connected with the first connecting piece to realize connection between the second transmission shaft and the first transmission shaft.

Optionally, one end of the second housing, which is far away from the first housing, is provided with a second connecting piece, and an output end of the second driving piece passes through the second connecting piece and is connected with the second transmission shaft.

Optionally, the second transmission shaft located inside the second casing is sleeved with at least one self-aligning roller bearing, and when the second transmission shaft moves along the axial direction, an inner ring of the self-aligning roller bearing rotates along the circumferential direction of the second transmission shaft.

Optionally, the second driving element is disposed on a supporting plate, the supporting plate is parallel to one surface of the bracket facing the torque transmission plate, the supporting plate is connected to the bracket through a connecting rod, and the connecting rod is located outside the torque transmission plate; a first base is arranged between the torque transmission plate and the support, and the connecting rod is erected on the first base.

Optionally, the supporting plate is erected on the second base, and the first shell of the first transmission assembly is erected on the third base; and a sensor for testing the torque and the axial force of the test piece is arranged on the torque transmission plate.

The beneficial effects of this application lie in, a shafting test bench is provided, cooperation design through biography torsion board and first driving piece, can apply the moment of torsion to the shafting test piece, cooperation design through first drive assembly and second driving piece, can apply thrust or pulling force to the shafting test piece, thereby realize applying moment of torsion and thrust simultaneously to the shafting test piece, perhaps apply moment of torsion and pulling force's purpose simultaneously, thereby the operating condition of simulation shafting test piece, in order to obtain shafting test piece axial stiffness and torsional rigidity, verify, the design result of calibration shafting test piece.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an assembly structure of a shafting test bed and a test piece according to an embodiment of the present disclosure;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic diagram of a frame in an axial test stand according to an embodiment of the present disclosure;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a schematic diagram of a partial cross-sectional view of a first transmission assembly in a shafting test bed according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a second transmission assembly in a shafting test bed according to an embodiment of the present application;

FIG. 7 is a schematic view of an assembly structure of a shafting test bed and a test piece according to another embodiment of the present application;

fig. 8 is a top view of fig. 7.

Description of the reference numerals:

100. the shaft system test bed comprises a shaft system test bed, 110, a bracket, 111, a first shaft hole, 120, a torque transmission plate, 130, a first driving piece, 140, a first transmission component, 141, a first transmission shaft, 141a, a first connecting part, 142, a first shell, 143, a first end cover, 144, a cylindrical roller bearing, 145, a first connecting piece, 150, a second driving piece, 151, a supporting plate, 152, a connecting rod, 152a, a connecting rod, 160, a second transmission component, 161, a second transmission shaft, 161a second connecting part, 162, a second shell, 163, a second end cover, 164, a self-aligning roller bearing, 165, a second connecting piece, 171, a first base, 172, a second base, 173 and a third base;

200. and (5) testing the part.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. 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 application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In this application, where the context requires otherwise, the words "upper" and "lower" used in relation to the device in use or operation will generally refer to the upper and lower extremities of the device, particularly as oriented in the drawing figures; while "inner" and "outer" are with respect to the outline of the device.

The utility model provides an shafting test bench, cooperation design through biography torsional plate and first driving piece, can apply the moment of torsion to the shafting test piece, cooperation design through first transmission subassembly and second driving piece, can apply thrust or pulling force to the shafting test piece, thereby realize applying moment of torsion and thrust simultaneously to the shafting test piece, perhaps apply moment of torsion and pulling force's purpose simultaneously, thereby the actual operating condition of simulation shafting test piece, in order to obtain shafting test piece axial rigidity and torsional rigidity, verify, the design result of calibration shafting test piece. As a typical application, the shafting test bed can be used for simulating the actual working condition of a transmission shaft in a ship propulsion shafting.

In an embodiment of the present application, referring to fig. 1 to 6, the shafting test stand 100 includes: bracket 110, torque plate 120, first drive 130, first drive assembly 140, and second drive 150.

The bracket 110 and the torque transmission plate 120 are arranged at intervals, referring to fig. 4, a first shaft hole 111 is formed in the bracket 110, a second shaft hole (not shown) is formed in the torque transmission plate 120, the second shaft hole is coaxial with the first shaft hole 111, specifically, the central axis of the second shaft hole is coaxial with the central axis of the first shaft hole 111, and the torque transmission plate 120 and the bracket 110 cooperate to form a support for the test piece 200. Wherein, be provided with a plurality of strengthening ribs on the support 110 to increase support 110's rigidity, reduce the deflection of support 110 in the experimentation, and then reduce measuring error, promote measurement accuracy.

Referring to fig. 1, the number of the first driving members 130 is two, and the first driving members 130 are disposed on two sides of the torque transmission plate 120, and the first driving members 130 in this embodiment are hydraulic cylinders, and the two first driving members 130 cooperate to drive the torque transmission plate 120 to rotate to generate torque. As a preferred implementation manner, a supporting base (not shown) may be disposed on a bottom surface of the first driving element 130 to increase stability of the first driving element 130 and the torque transmission plate 120, so as to prevent the axle system test bed 100 from twisting and overturning during the torque test.

Referring to fig. 1, 2 and 5, the first transmission assembly 140 is disposed at an outer side of one surface of the torque transmission plate 120 far from the bracket 110, the first transmission assembly 140 includes a first transmission shaft 141, the first transmission shaft 141 is coaxial with the second shaft hole of the torque transmission plate 120, specifically, a central axis of the first transmission shaft 141 is coaxial with a central axis of the second shaft hole, and one end of the first transmission shaft 141 corresponds to the second shaft hole so as to be connected to an inner end of the test piece 200 extending into the second shaft hole. The second driving element 150 is disposed outside an end of the first transmission assembly 140 away from the torque transmission plate 120, and an end of the first transmission shaft 141 away from the torque transmission plate 120 is connected to an output end of the second driving element 150.

When the test piece testing device is used, one end of the test piece 200 is inserted into the first shaft hole 111 of the support 110, the other end of the test piece 200 is inserted into the second shaft hole of the torque transmission plate 120, the first transmission shaft 141 and the test piece 200 are inserted into the second shaft hole, the side end of the second transmission shaft is connected, the second driving piece 150 drives the first transmission shaft 141 to extend in the axial direction to generate pushing force or drives the first transmission shaft 141 to contract in the axial direction to generate pulling force, the first transmission shaft 141 transmits the pushing force or the pulling force to the test piece 200 to drive the test piece to extend or contract in the axial direction, and meanwhile, the first driving piece 130 drives the torque transmission plate 120 to rotate in the circumferential direction of the test piece 200 to apply torque to the test piece 200, so that the torque and the pushing force are simultaneously applied to the test piece 200, or the torque and the pulling force are simultaneously applied to the test piece 200, and the actual working condition that the test piece 200 receives the torque and the pushing force or receives the torque and the pulling force simultaneously is simulated. The test piece 200 is a transmission shaft in a ship propulsion shaft system, the shaft system test bed 100 performs a test of loading the maximum torque (torque) and the rated axial thrust of the transmission shaft at the same time, the transmission shaft is not damaged in the test process, and the test result is recorded by a computer.

In addition, referring to fig. 1, 2 and 6, the shafting test bed 100 further includes a second transmission assembly 160, the second transmission assembly 160 includes a second transmission shaft 161, the second transmission shaft 161 is coaxial with the first transmission shaft 141, specifically, a central axis of the second transmission shaft 161 is coaxial with a central axis of the first transmission shaft 141, one end of the second transmission shaft 161 is in transmission connection with the first transmission shaft 141, the other end of the second transmission shaft 161 is connected with an output end of the second driving member 150, and the output end of the second driving member 150 outputs a pushing force or a pulling force to the test piece 200 through the second transmission shaft 161 and the first transmission shaft 141. The coaxial design of the second transmission shaft 161, the first transmission shaft 141 and the test piece 200 can ensure the stable transmission of the pushing force or the pulling force, and the test piece is not damaged.

Referring to fig. 5, the first transmission assembly 140 further includes a first housing 142, first end caps 143 are respectively disposed at two axial ends of the first housing 142, the first transmission shaft 141 is inserted into the first housing 142, two ends of the first transmission shaft 141 respectively extend out of the adjacent first end caps 143, two cylindrical roller bearings 144 are sleeved on the first transmission shaft 141 located inside the first housing 142, the two cylindrical roller bearings 144 are disposed at two ends of the first transmission shaft 141 at intervals along an axial direction of the first transmission shaft 141, the cylindrical roller bearings 144 are in contact with an inner surface of the adjacent first end caps 143, and in a process of performing a test on the test piece 200, inner rings (not shown in the figure) of the two cylindrical roller bearings 144 can respectively move back and forth along the axial direction of the first transmission shaft 141, so as to facilitate the test installation and adjustment, play a role in fixing an axis, and also play a role in supporting other components of the first transmission assembly 140.

Wherein, first transmission shaft 141 is provided with first connecting portion 141a towards second shaft hole one end, specifically, first transmission shaft 141 is provided with first bellying towards the protrusion of second shaft hole one end outer wall along first transmission shaft 141's circumference, and a plurality of first connecting holes are seted up along first bellying circumference interval on first bellying surface, and these a plurality of first connecting holes form promptly first connecting portion 141a, and first transmission shaft 141 stretches into second shaft hole inner end through first connecting hole and test piece 200 and is connected. The first connecting piece 145 is sleeved on the outer wall of one end of the first transmission shaft 141 facing the second transmission shaft 161, and the first transmission shaft 141 is connected with the second transmission shaft 161 through the first connecting piece 145. A lip-shaped sealing ring is arranged at the joint of the first end cover 143 and the first transmission shaft 141, and a common C-shaped flat key, a split stop block, a check ring and a shaft elastic check ring C are arranged between the inner wall of the first connecting piece 145 and the first transmission shaft 141.

Referring to fig. 6, the second transmission assembly 160 further includes a second housing 162, two axial ends of the second housing 162 are open, a second end cap 163 is disposed at an open end of the second housing 162 facing the first transmission assembly 140, the second transmission shaft 161 is inserted into the second housing 162, the second transmission shaft 161 extends out of the second end cap 163 towards one end of the first transmission assembly 140 and is connected to the first connection member 145, one end of the second transmission shaft 161 away from the first transmission assembly 140 is located inside the second housing 162, and two self-aligning roller bearings 164 are sleeved on the second transmission shaft 161 located inside the second housing 162 at intervals, and the two self-aligning roller bearings 164 are arranged at two ends of the second transmission shaft 161 at intervals along the axial direction of the second transmission shaft 161. The second casing 162 is provided with a second connecting member 165 at an opening end facing one end of the second driving member 150, and the output end of the second driving member 150 extends into the second casing 162 through the second connecting member 165 and is connected to the second transmission shaft 161.

The second transmission shaft 161 is provided with a second connecting portion 161a towards one end of the first transmission assembly 140, specifically, the second transmission shaft 161 is provided with a second protruding portion towards the outer wall of one end of the first transmission assembly 140 along the circumferential direction of the second transmission shaft 161, a plurality of second connecting holes are formed in the surface of the second protruding portion along the circumferential direction of the second protruding portion at intervals, the second connecting holes form the second connecting portion 161a, the second transmission shaft 161 is connected with the first connecting member 145 through the second connecting holes, a lip-shaped sealing ring is arranged at the joint of the second end cover 163 and the second transmission shaft 161, and a common C-shaped flat key, a split stop block and a retaining ring are arranged on the outer wall of one end of the second transmission shaft 161 close to the second connecting member 165.

The first connecting member 145 and the second connecting member 165 are respectively a connecting flange.

In addition, referring to fig. 1 and 2, the second driving member 150 is disposed on a supporting plate 151, the second driving member 150 and the supporting plate 151 cooperate to form a driving assembly, the supporting plate 151 and the bracket 110 face the torque transmission plate 120 in parallel, the supporting plate 151 is connected to the bracket 110 through a connecting rod 152, the number of the connecting rods 152 is two, the connecting rods 152 are arranged at the outer sides of the two ends of the torque transmission plate 120 at intervals, and the supporting plate 151 and the bracket 110 are connected through the connecting rod 152 to form a whole, so as to form an internal force system. In the test process, the pushing/pulling force exerted by the second driving member 150 is large, and due to the existence of the connecting rod 152, the supporting plate 151 and the support 110 are connected into a whole, so that the problem of axial overturning of the second driving member 150 and the support 110 caused by the large axial pushing/pulling force is solved, and the overall size of the test bed is reduced. Wherein, the connecting rod 152 can be formed by connecting a plurality of connecting rods 152a in sequence to form a whole so as to adjust the overall space size of the shaft system test bed 100, thereby adapting to test pieces 200 with different lengths.

In addition, the torque transmission plate 120 is provided with a force sensor for measuring and recording the torque and the axial force (thrust or tension) applied to the test piece 200, and a displacement sensor for measuring and recording the displacement of the test piece 200, wherein the force sensor and the displacement sensor respectively upload the obtained data to a computer, so as to obtain the axial stiffness and the torsional stiffness of the test piece 200.

In another embodiment of the present application, referring to fig. 6 and 7, a first base 171 is disposed between the torque transmission plate 120 and the bracket 110, and the connecting rod 152 is erected on the first base 171 to avoid the connecting rod 152 from being thrust unstable when a tensile force is applied to the test piece 200 due to too much deflection when the connecting rod 152 is too long. The supporting plate 151 is erected on the second base 172, and the bottom surface of the first transmission assembly 140 is erected on the third base 173, so as to ensure the stability of the transmission of the thrust/tension between the first transmission assembly 140 and the second transmission assembly 160, and ensure the stability of the output of the axial force (thrust or tension) of the second driving member 150.

The above detailed description is provided for an axle system test bed provided in the embodiments of the present application, and the principles and embodiments of the present application are described herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An shafting test bed, comprising:

the support is provided with a first shaft hole;

the torque transmission plate is arranged opposite to the bracket, a second shaft hole corresponding to the first shaft hole is formed in the torque transmission plate, and the central axis of the second shaft hole is coaxial with the central axis of the first shaft hole;

the output end of the first driving piece is connected with the torque transmission plate, and the first driving piece drives the torque transmission plate to rotate so as to generate torque;

the first transmission assembly is arranged on the outer side of one surface, far away from the support, of the torque transmission plate and comprises a first transmission shaft, the central axis of the first transmission shaft is coaxial with the central axis of the second shaft hole, and one end of the first transmission shaft corresponds to the second shaft hole;

the second driving piece is arranged on the outer side of one end of the torsion plate far away from the first driving assembly, the output end of the second driving piece is connected with one end of the torsion plate far away from the first transmission shaft, and the second driving piece drives the first transmission shaft to move along the axial direction so as to generate thrust or pull.

2. The shafting test stand of claim 1, further comprising a second transmission assembly, said first transmission assembly and said second transmission assembly being sequentially arranged between said torque plate and said second driver;

the second transmission assembly comprises a second transmission shaft, the central axis of the second transmission shaft is coaxial with the central axis of the first transmission shaft, and one end of the second transmission shaft is connected with the first transmission shaft;

the end, far away from the second transmission shaft, of the first transmission shaft corresponds to the second shaft hole, the end, far away from the first transmission shaft, of the second transmission shaft is connected with the output end of the second driving piece, and the second driving piece drives the second transmission shaft to drive the first transmission shaft to move axially.

3. The shafting test stand of claim 2, wherein the first transmission assembly further comprises a first housing, the first transmission shaft extending through the first housing;

the two ends of the first transmission shaft extend out of the outer side of the first shell respectively, and a first connecting portion used for being connected with a test piece is arranged at one end, facing the second shaft hole, of the first transmission shaft.

4. An shafting test stand according to claim 3, wherein at least one cylindrical roller bearing is fitted over the first transmission shaft inside the first housing, and inner rings of the cylindrical roller bearings move axially with the first transmission shaft when the first transmission shaft moves axially, respectively.

5. The shafting test stand of claim 4, wherein the second drive assembly further comprises a second housing, the second drive shaft is inserted into the second housing, one end of the second drive shaft is located outside the second housing and connected to the first drive shaft, the other end of the drive shaft is located inside the second housing, and the output end of the second drive member extends into the second housing and connected to the second drive shaft.

6. An axle system test stand according to claim 5, wherein a first connecting member is sleeved on an end of the first drive shaft facing the second drive shaft, and a second connecting portion is provided on an outer side end of the second housing, the second connecting portion being connected to the first connecting member to effect connection between the second drive shaft and the first drive shaft.

7. An axle train test stand according to claim 6, wherein a second connector is provided at an end of the second housing remote from the first housing, and an output end of the second drive member passes through the second connector and connects to the second drive shaft.

8. An axle system test bed according to claim 7, wherein at least one self-aligning roller bearing is sleeved on the second transmission shaft inside the second housing, and an inner ring of the self-aligning roller bearing rotates in a circumferential direction of the second transmission shaft when the second transmission shaft moves in the axial direction.

9. The shafting test stand of claim 1, wherein the second driving member is disposed on a support plate parallel to a side of the bracket facing the torque transmission plate, the support plate being connected to the bracket by a connecting rod located outside the torque transmission plate;

a first base is arranged between the torque transmission plate and the support, and the connecting rod is erected on the first base.

10. The shafting test stand of claim 9, wherein the support plate is mounted on a second base and the first housing of the first transmission assembly is mounted on a third base;

and a sensor for testing the torque and the axial force of the test piece is arranged on the torque transmission plate.