Impeller mandrel torque testing equipment

Abstract

The utility model discloses an impeller mandrel torque test device, which comprises a workbench and a support frame, the top end of the workbench is provided with the support frame, the top end of the support frame is provided with an integrated frame, the top end of the workbench at one side of the support frame is provided with a test board, the side wall of the test board is provided with a main moving plate in a sliding manner, and the main moving plate is connected with the integrated frame. An auxiliary moving plate is slidably mounted on the side wall of the main moving plate, a main hydraulic rod is movably mounted on the side wall of the auxiliary moving plate, a main pushing arm is mounted at the output end of the main hydraulic rod, a linkage arm is mounted at the end, away from the main hydraulic rod, of the main pushing arm, and a linkage shaft is mounted at the end, close to the main pushing arm, of the linkage arm. And the main push arm is movably connected with the linkage arm through a linkage shaft. According to the utility model, the convenient linkage centering clamping and fixing of the impeller and the convenient linkage rotation testing of the mandrel torque are realized, the connection and fixation of the mandrel and the torque sensor are facilitated, and the convenience of the torque test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of torque testing equipment, in particular to a torque testing equipment for an impeller core shaft. Background Technique

[0002] The impeller is an important part of a water pump. The impeller refers to both the wheel disc equipped with moving blades, which is a component of an impulse steam turbine rotor, and can also refer to the general term of the wheel disc and the rotating blades installed thereon. The impeller is connected to the pump body through an impeller core shaft. The connection part between the impeller and the impeller core shaft is mostly welded, and torque testing is required at this position to detect whether it meets the working requirements. In order to better measure the torque of the impeller core shaft, a torque testing equipment for the impeller core shaft is proposed.

[0003] As disclosed in the impeller core shaft torque testing device with the authorization publication number CN215767466U, it includes a testing platform, several T-shaped positioning rods arranged radially and sliding centripetally on the top of the testing platform, a plastic impeller arranged on the top of the testing platform and inserted and matched with the upper part of the T-shaped positioning rods, a metal bushing integrally injection-molded and connected with the central hole of the plastic impeller, a core shaft inserted and matched with the metal bushing with interference fit, a coupling arranged at the top of the core shaft, and a torque wrench connected to the coupling for detecting the torque between the core shaft and the metal bushing; several connecting ribs are arranged at intervals axially on the outer periphery of the metal bushing, and inclined slopes are arranged at both ends of the connecting ribs. Multiple T-shaped positioning rods are inserted and matched with the corresponding drain holes on the plastic impeller;

[0004] Although it realizes accurate testing of the torque between the core shaft and the metal bushing, and the connection structure between the plastic impeller and the metal bushing is stable;

[0005] However, it does not solve the problem that the existing torque testing equipment is not convenient for conveniently and synchronously centering and clamping the impeller and conveniently and synchronously rotating to test the torque of the core shaft, and it is not conducive to connecting and fixing the core shaft and the torque sensor, which affects the convenience of torque testing. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a torque testing equipment for an impeller core shaft to solve the problems in the above background technique that the torque testing equipment is not convenient for conveniently and synchronously centering and clamping the impeller and conveniently and synchronously rotating to test the torque of the core shaft, and it is not conducive to connecting and fixing the core shaft and the torque sensor, which affects the convenience of torque testing.

[0007] To achieve the above object, the present utility model provides the following technical solution: An impeller core shaft torque testing device, comprising a workbench and a support frame. The top of the workbench is provided with a support frame, the top of the support frame is provided with an integrated frame, the top of the workbench on one side of the support frame is provided with a test bench, a main moving plate is slidably mounted on the side wall of the test bench, a secondary moving plate is slidably mounted on the side wall of the main moving plate, a main hydraulic rod is movably mounted on the side wall of the secondary moving plate, an output end of the main hydraulic rod is provided with a main push arm, a linkage arm is mounted at one end of the main push arm away from the main hydraulic rod, a linkage shaft is mounted at one end of the linkage arm close to the main push arm, and the main push arm is movably connected to the linkage arm through the linkage shaft. A rotating shaft is movably mounted on the side wall of the secondary moving plate on one side of the linkage arm, and the linkage arm is fixedly connected to the rotating shaft. A torque sensor is mounted at one end of the rotating shaft away from the secondary moving plate, and a connecting shaft sleeve is mounted on one side of the torque sensor.

[0008] Preferably, a core shaft body is mounted inside the connecting shaft sleeve, and the core shaft body is slidably connected to the connecting shaft sleeve. An impeller body is mounted at one end of the core shaft body away from the connecting shaft sleeve.

[0009] Preferably, a connecting key is mounted on the inner wall of the connecting shaft sleeve, a key groove is mounted on the outer wall of the core shaft body, and the key groove is slidably connected to the connecting key.

[0010] Preferably, a locking pin is mounted on the outer wall of the connecting shaft sleeve, and the locking pin penetrates through the connecting shaft sleeve and extends to the surface of the core shaft body.

[0011] Preferably, a secondary hydraulic rod is mounted on the side wall of the integrated frame, and a secondary push arm is mounted at the output end of the secondary hydraulic rod.

[0012] Preferably, a moving block is mounted at one end of the secondary push arm away from the integrated frame, and three groups of connecting arms at equal intervals are mounted on the side wall of the moving block.

[0013] Preferably, hinge shafts are mounted at one ends of the connecting arms close to the moving block, and the connecting arms are movably connected to the moving block through the hinge shafts.

[0014] Preferably, three groups of sliding blocks at equal intervals are slidably mounted inside the integrated frame. Activity shafts are mounted at one ends of the connecting arms close to the sliding blocks, and the connecting arms are movably connected to the sliding blocks through the activity shafts. Clamping blocks are mounted on the side walls of the sliding blocks.

[0015] Compared with the prior art, the beneficial effects of the present utility model are: This torque testing device not only realizes convenient linkage centering and clamping to fix the impeller and convenient linkage rotation to test the torque of the core shaft, facilitates the connection and fixation of the core shaft and the torque sensor, but also improves the convenience of torque testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is a three-dimensional structure schematic diagram of the support frame of the present utility model;

[0018] Figure 3 is a three-dimensional structure schematic diagram of the connecting bushing of the present utility model;

[0019] Figure 4 is a three-dimensional structure schematic diagram of the integrated frame of the present utility model;

[0020] Figure 5 is a side view sectional structure schematic diagram of the test bench of the present utility model.

[0021] In the figure: 1, workbench; 2, support frame; 3, test bench; 4, main moving plate; 5, auxiliary moving plate; 6, core shaft body; 7, impeller body; 8, integrated frame; 9, clamping block; 10, auxiliary hydraulic rod; 11, keyway; 12, connecting key; 13, connecting bushing; 14, torque sensor; 15, locking pin; 16, movable shaft; 17, sliding block; 18, connecting arm; 19, hinge shaft; 20, moving block; 21, auxiliary push arm; 22, main hydraulic rod; 23, main push arm; 24, linkage shaft; 25, linkage arm; 26, rotating shaft. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5, an embodiment provided by the present utility model: an impeller core shaft torque testing device, which includes a workbench 1 and a support frame 2. The support frame 2 is installed at the top of the workbench 1, and an integrated frame 8 is installed at the top of the support frame 2. A test bench 3 is installed at the top of the workbench 1 on one side of the support frame 2. A main moving plate 4 is slidably installed on the side wall of the test bench 3. A secondary moving plate 5 is slidably installed on the side wall of the main moving plate 4. A main hydraulic rod 22 is movably installed on the side wall of the secondary moving plate 5. The main hydraulic rod 22 plays a role in power driving. The output end of the main hydraulic rod 22 is installed with a main push arm 23. One end of the main push arm 23 away from the main hydraulic rod 22 is installed with a linkage arm 25. One end of the linkage arm 25 close to the main push arm 23 is installed with a linkage shaft 24, and the main push arm 23 is movably connected to the linkage arm 25 through the linkage shaft 24. A rotating shaft 26 is movably installed on the side wall of the secondary moving plate 5 on one side of the linkage arm 25, and the linkage arm 25 is fixedly connected to the rotating shaft 26. One end of the rotating shaft 26 away from the secondary moving plate 5 is installed with a torque sensor 14. A connecting shaft sleeve 13 is installed on one side of the torque sensor 14;

[0024] First, place the impeller body 7 between multiple groups of clamping blocks 9, connect the device to an external controller and an external circuit, turn on the secondary hydraulic rod 10. The secondary hydraulic rod 10 drives the secondary push arm 21 to move, the secondary push arm 21 drives the moving block 20 to move, the moving block 20 drives the connecting arm 18 to rotate through the hinge shaft 19, the connecting arm 18 drives the sliding block 17 to move inside the integrated frame 8 through the movable shaft 16, and the sliding block 17 drives the clamping blocks 9 to move towards the center position. Under the combined action of the three groups of clamping blocks 9, the impeller body 7 is clamped and fixed. Then move the secondary moving plate 5, and the secondary moving plate 5 drives the connecting shaft sleeve 13 to move to align the center position of the connecting shaft sleeve 13 with the center position of the core shaft body 6. Move the main moving plate 4, and the main moving plate 4 drives the secondary moving plate 5 and the connecting shaft sleeve 13 to move to insert the core shaft body 6 into the inside of the connecting shaft sleeve 13. The core shaft body 6 drives the keyway 11 to move on the surface of the connecting key 12. Under the mutual connection of the keyway 11 and the connecting key 12, the connection strength between the core shaft body 6 and the connecting shaft sleeve 13 is increased. Then tighten the locking pin 15, and the locking pin 15 fixedly connects the core shaft body 6 and the connecting shaft sleeve 13 to further increase the connection strength between the core shaft body 6 and the connecting shaft sleeve 13, preparing for subsequent testing. It realizes convenient linkage centering and clamping of the impeller, and facilitates the connection and fixation of the core shaft and the torque sensor;

[0025] The core shaft body 6 is installed inside the connecting shaft sleeve 13, and the core shaft body 6 is slidably connected to the connecting shaft sleeve 13. One end of the core shaft body 6 away from the connecting shaft sleeve 13 is installed with the impeller body 7;

[0026] A connecting key 12 is installed on the inner wall of the connecting bushing 13, and a keyway 11 is installed on the outer wall of the mandrel body 6. The keyway 11 is slidably connected to the connecting key 12. A locking pin 15 is installed on the outer wall of the connecting bushing 13, and the locking pin 15 penetrates through the connecting bushing 13 and extends to the surface of the mandrel body 6;

[0027] An auxiliary hydraulic rod 10 is installed on the side wall of the integrated frame 8. The auxiliary hydraulic rod 10 plays a role in power driving. An auxiliary push arm 21 is installed at the output end of the auxiliary hydraulic rod 10. A moving block 20 is installed at one end of the auxiliary push arm 21 away from the integrated frame 8. Three groups of connecting arms 18 at equal intervals are installed on the side wall of the moving block 20;

[0028] Hinge shafts 19 are installed at the ends of the connecting arms 18 close to the moving block 20, and the connecting arms 18 are movably connected to the moving block 20 through the hinge shafts 19;

[0029] Three groups of sliding blocks 17 at equal intervals are slidably installed inside the integrated frame 8. Hinge shafts 16 are installed at the ends of the connecting arms 18 close to the sliding blocks 17, and the connecting arms 18 are movably connected to the sliding blocks 17 through the hinge shafts 16. Clamping blocks 9 are installed on the side walls of the sliding blocks 17;

[0030] After that, the main hydraulic rod 22 is opened. The main hydraulic rod 22 drives the main push arm 23 to move. The main push arm 23 drives the linkage arm 25 to rotate through the linkage shaft 24. Under the movable connection of the rotating shaft 26 and the auxiliary moving plate 5, the linkage arm 25 drives the rotating shaft 26 to rotate. The rotating shaft 26 drives the torque sensor 14, the connecting bushing 13 and the mandrel body 6 to rotate. The impeller body 7 is in a fixed state. The torque sensor 14 is a NCTE-FC-S7300 series sensor. Its working principle is: based on the electrical measurement conversion principle of strain gauges, the torque is converted into an electrical signal by measuring the deformation of the elastic element. The data is obtained by measuring the deformation amount of the mandrel body 6. The obtained data is transmitted to the computer through the torque sensor 14, so as to obtain the torque data of the mandrel body 6, realizing the convenient linkage rotation test of the mandrel torque and improving the convenience of torque measurement.

[0031] Working principle: First, place the impeller body 7 between multiple groups of clamping blocks 9. The auxiliary hydraulic rod 10 drives the auxiliary push arm 21 to move. The auxiliary push arm 21 drives the moving block 20 to move. The moving block 20 drives the connecting arm 18 to rotate through the hinge shaft 19. The connecting arm 18 drives the sliding block 17 to move inside the integrated frame 8 through the movable shaft 16. The sliding block 17 drives the clamping blocks 9 to move towards the center position. Under the combined action of the three groups of clamping blocks 9, the impeller body 7 is clamped and fixed. Then, move the auxiliary moving plate 5. The auxiliary moving plate 5 drives the connecting shaft sleeve 13 to move to align the center position of the connecting shaft sleeve 13 with the center position of the core shaft body 6. Move the main moving plate 4. The main moving plate 4 drives the auxiliary moving plate 5 and the connecting shaft sleeve 13 to move to insert the core shaft body 6 into the inside of the connecting shaft sleeve 13. The core shaft body 6 drives the keyway 11 to move on the surface of the connecting key 12. Under the mutual connection of the keyway 11 and the connecting key 12, the connection strength between the core shaft body 6 and the connecting shaft sleeve 13 is increased. The locking pin 15 fixedly connects the core shaft body 6 and the connecting shaft sleeve 13 to further increase the connection strength between the core shaft body 6 and the connecting shaft sleeve 13, preparing for subsequent tests. The main hydraulic rod 22 drives the main push arm 23 to move. The main push arm 23 drives the linkage arm 25 to rotate through the linkage shaft 24. The linkage arm 25 drives the rotating shaft 26 to rotate. The rotating shaft 26 drives the torque sensor 14, the connecting shaft sleeve 13, and the core shaft body 6 to rotate. The impeller body 7 is in a fixed state. By measuring the deformation of the core shaft body 6, data is obtained. The obtained data is transmitted to the computer through the torque sensor 14, thereby obtaining the torque data of the core shaft body 6 to complete the use of the impeller core shaft torque testing equipment.

Claims

1. An impeller core shaft torque testing device, comprising a workbench (1) and a support frame (2), characterized in that: A support frame (2) is installed at the top of the workbench (1), an integrated frame (8) is installed at the top of the support frame (2), a test bench (3) is installed at the top of the workbench (1) on one side of the support frame (2), a main movable plate (4) is slidably installed on the side wall of the test bench (3), a secondary movable plate (5) is slidably installed on the side wall of the main movable plate (4), a main hydraulic rod (22) is movably installed on the side wall of the secondary movable plate (5), a main push arm (23) is installed at the output end of the main hydraulic rod (22), and the main push arm (23) is away from the main hydraulic rod (22). ) is installed at one end of the linkage arm (25), a linkage shaft (24) is installed at one end of the linkage arm (25) close to the main pushing arm (23), and the main pushing arm (23) is movably connected to the linkage arm (25) through the linkage shaft (24), a rotating shaft (26) is movably installed on the side wall of the auxiliary movable plate (5) on one side of the linkage arm (25), and the linkage arm (25) is fixedly connected to the rotating shaft (26), a torque sensor (14) is installed at one end of the rotating shaft (26) on the principle of the auxiliary movable plate (5), and a connecting shaft sleeve (13) is installed on one side of the torque sensor (14).

2. The impeller core shaft torque testing device according to claim 1, characterized in that: A core shaft body (6) is installed inside the connecting sleeve (13), and the core shaft body (6) is slidably connected to the connecting sleeve (13). An impeller body (7) is installed at one end of the core shaft body (6) away from the connecting sleeve (13).

3. The impeller core shaft torque testing device according to claim 1, characterized in that: A connecting key (12) is installed on the inner wall of the connecting sleeve (13), and a keyway (11) is installed on the outer wall of the core shaft body (6), and the keyway (11) is slidably connected to the connecting key (12).

4. The impeller spindle torque testing device according to claim 1, characterized in that: A locking pin (15) is installed on the outer wall of the connecting sleeve (13), and the locking pin (15) penetrates the connecting sleeve (13) and extends to the surface of the core shaft body (6).

5. The impeller spindle torque testing device according to claim 1, characterized in that: A secondary hydraulic rod (10) is installed on the side wall of the integrated frame (8), and a secondary push arm (21) is installed on the output end of the secondary hydraulic rod (10).

6. The impeller spindle torque testing device according to claim 5, characterized in that: A moving block (20) is installed at one end of the auxiliary push arm (21) away from the integrated frame (8), and three groups of connecting arms (18) with equal spacing are installed on the side wall of the moving block (20).

7. The impeller spindle torque testing device according to claim 6, characterized in that: A hinge shaft (19) is installed at one end of the connecting arm (18) close to the moving block (20), and the connecting arm (18) is movably connected to the moving block (20) via the hinge shaft (19).

8. The impeller spindle torque testing device according to claim 6, characterized in that: Three groups of sliding blocks (17) with equal spacing are slidably installed inside the integrated frame (8), and a movable shaft (16) is installed at one end of the connecting arm (18) close to the sliding block (17), and the connecting arm (18) is movably connected to the sliding block (17) through the movable shaft (16), and a clamping block (9) is installed on the side wall of the sliding block (17).

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