A power unit hydraulic performance test bench

Abstract

The application relates to the technical field of hydraulic testing, and discloses a power unit hydraulic performance test bench, which comprises a seat table, a processing panel and a rotary support assembly are arranged on the seat table, a rotatable test cylinder is arranged at the front end of the rotary support assembly, a plurality of L-shaped installation grooves in a circumferential array are formed in the periphery of the test cylinder, an adjusting cylinder is arranged in the middle of the inner cavity of the test cylinder, an extension cylinder II is fixedly connected between the adjusting cylinder and the bottom of the inner cavity of the test cylinder; a sealing ring is rotatably sleeved on the periphery of the test cylinder, and a plurality of observation openings are formed in the sealing ring. The application is convenient and fast to install through integrated control, the test efficiency is improved, the L-shaped installation grooves can be quickly sealed after the test, the installation and test of the power unit are prevented from being affected by impurities, air, water rust and corrosion are avoided, the installation precision and service life are guaranteed, the abrasion of the force measuring end is avoided, the test precision is improved, and the comprehensiveness and stability of the test are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic testing, in particular to a power unit hydraulic performance test bench. BACKGROUND

[0002] In recent years, in oil exploitation operations, the rotary steerable drilling system has gradually become a popular directional drilling technology and has become one of the key technologies for efficient drilling. The hydraulic power unit in the rotary steerable drilling system is the biasing mechanism of the steering system and is the only power source for the bit build-up. It is crucial to the build-up rate effect and construction safety of the rotary steerable drilling system. At present, the research on drilling steering technology requires testing of the hydraulic power unit.

[0003] The patent for invention with publication number CN113702035B discloses a hydraulic power unit testing device, belonging to the field of oil drilling engineering, which comprises a supporting mechanism, the supporting mechanism comprising a base and a mounting shaft arranged on the base; a hydraulic power unit mounted on the mounting shaft, the hydraulic power unit providing hydraulic pressure; a load ring assembly sleeved on the mounting shaft, the load ring assembly receiving the pressure applied by the hydraulic power unit; and a data acquisition and control system connected to the hydraulic power unit and controlling the hydraulic power of the hydraulic power unit, the data acquisition and control system also being connected to the load ring assembly and acquiring the pressure received by the load ring assembly.

[0004] In the use process of the hydraulic power unit testing device in the above patent, the power units need to be locked one by one into the mounting slots on the periphery of the mounting shaft, the support ring with the load part is sleeved and locked on the periphery of the mounting shaft through the positioning device, and then the mounting shaft is placed on the rollers on the V-shaped support, and the rollers are controlled to drive the mounting shaft to rotate to simulate the working state of the power units during rotation. This process is relatively cumbersome and inconvenient for the installation and disassembly operations before and after the testing of the power units, affecting the testing efficiency of the power units. After the testing is completed, there is a lack of convenient and effective sealing measures for the mounting slots, impurities can easily enter the mounting slots, and the mounting slots can easily come into contact with air, water, etc., causing rust and corrosion, which reduces the installation precision and service life and affects the testing precision. When the support ring is sleeved on the mounting shaft, the load part cannot be retracted, so the load part end continuously rubs against the outer wall of the mounting shaft and the power unit with the movement of the support ring, which can easily cause deformation or wear of the contact end of the load part, thereby reducing the testing precision after multiple tests. The mounting shaft is directly lapped on the rollers for rotation, and the testing safety is not guaranteed. At the same time, since the power units are only simulated to rotate with the steering head during testing, the influence of gravity on the power units in different directions is not simulated, the simulation testing is not real enough, the testing precision is low, and the testing is not comprehensive enough. SUMMARY

[0005] The hydraulic performance test table of the power unit aims at solving the problems of low test efficiency, lack of effective sealing measures for the installation groove, easy deformation or wear of the force measuring part, low test precision and incomprehensive test.

[0006] In order to achieve the above-mentioned purpose, the present application specifically adopts the following technical scheme:

[0007] The hydraulic performance test table of the power unit comprises a seat table, a processing panel and a rotary support assembly arranged on the seat table, a rotatable test cylinder arranged at the front end of the rotary support assembly, a plurality of L-shaped installation grooves arranged in a circumferential array on the periphery of the test cylinder, an adjusting cylinder arranged in the middle of the inner cavity of the test cylinder, and a telescopic cylinder II fixedly connected between the adjusting cylinder and the bottom of the inner cavity of the test cylinder.

[0008] A sealing ring is rotatably sleeved on the periphery of the test cylinder, a plurality of observation openings are arranged on the sealing ring, a force measuring sleeve is fixedly connected to the middle of the observation opening, a pressure sensor is slidably connected in the force measuring sleeve, the pressure sensor is wirelessly connected to the processing panel, a nail-shaped pipe is rotatably connected to the top of the test cylinder, a plurality of insertion slots are arranged on the periphery of the top of the nail-shaped pipe, an L-shaped elastic pressing plate for fixing the power unit is slidably inserted into the outer wall of the nail-shaped pipe, and the adjusting cylinder is used for adjusting the sealing of the L-shaped installation groove and the pressure measurement of the power unit.

[0009] Further, the rotary support assembly comprises a rotating ring rotatably connected to the front wall of the seat table, bearing frames fixedly connected to the upper and lower sides of the front end of the rotating ring, the test cylinder rotatably connected between the bearing frames, a driving shaft rotatably connected between the bearing frames, the driving shaft driven by a speed reducer motor mounted on the upper bearing frame, and a transmission belt movably connected between the bottom of the driving shaft and the bottom of the test cylinder.

[0010] Further, a bevel gear sleeve is rotatably sleeved on the driving shaft, a friction cone sleeve is arranged on the bottom of the bevel gear sleeve and slidably connected to the driving shaft, the bottom of the bevel gear sleeve has a friction cone groove matched with the friction cone sleeve, a stop plate is rotatably sleeved on the bottom of the bevel gear sleeve, and a telescopic cylinder I is fixedly connected between the stop plate and the lower bearing frame.

[0011] The front wall of the seat table is fixedly connected with a bevel gear ring, the bevel gear sleeve is meshingly connected with the bevel gear ring, the front wall of the bevel gear ring has an annular clamping groove, the lower wall of the stop plate is arc-shaped and movably abuts against the inner wall of the annular clamping groove, and the stop plate is movably connected with the left wall of the annular clamping groove.

[0012] Further, the L-shaped installation groove is symmetrically provided with a right-angled protrusion near the side edge of the outer wall of the test cylinder for limiting the power unit.

[0013] Further, the outer periphery of the nail-shaped tube top has a downward extending edge portion which is in movable sealing abutment with the upper wall of the test cylinder and the upper wall of the bearing frame.

[0014] Further, the number of the observation ports and the number of the insertion slots are the same as the number of the L-shaped installation grooves, and are at least three, and the observation ports and the insertion slots are circumferentially arrayed.

[0015] Further, the inner wall of the nail-shaped tube is provided with three circumferentially arrayed V-shaped grooves, the adjusting cylinder is slidingly inserted into the nail-shaped tube, the outer wall of the upper side of the adjusting cylinder is provided with a protrusion one which is in movable abutment with the V-shaped groove, the bottom of the nail-shaped tube is provided with a movable ring which is fixedly connected with the L-shaped elastic pressing plate, the upper wall of the movable ring is provided with three recesses which are in abutment with the V-shaped groove, and the protrusion one is matched with the recess.

[0016] Further, the bottom of the inner cavity of the test cylinder is rotatably connected with a T-shaped tube, the T-shaped tube is fixedly connected with the inner wall of the sealing ring, and the bottom of the test cylinder is provided with a movable groove corresponding to the T-shaped tube.

[0017] The inner wall of the T-shaped tube is provided with a guide groove, the adjusting cylinder is slidingly inserted into the T-shaped tube, the outer wall of the lower side of the adjusting cylinder is provided with a protrusion two which is in movable abutment with the guide groove, and the guide groove is composed of an arc groove and a vertical groove which are connected and communicated.

[0018] Further, the inner wall of the force measuring sleeve is slidingly connected with an elastic column, the pressure sensor is fixedly connected with the outer end of the elastic column, the outer end of the pressure sensor has an arc end which can be in abutment with the surface of the actuating end of the power unit, the middle part of the elastic column has a through groove and the upper wall has a slope surface, the adjusting column is slidingly inserted into the force measuring sleeve, the bottom of the adjusting column is provided with a wedge groove, the wedge groove has an inclined surface which is in movable abutment with the slope surface, the top of the adjusting column is fixedly connected with a connecting ring, the connecting ring is rotatably sleeved with a sleeve ring, the sleeve ring and the outer wall of the adjusting cylinder are fixedly connected with a connecting rod, and the outer wall of the test cylinder is provided with a sliding groove matched with the connecting rod.

[0019] The beneficial effects of the present application are as follows:

[0020] 1、The present application is installed through telescopic cylinder two drive adjustment cylinder stepwise down, so as to automatically open each L type installation slot, and after each power unit is placed in place, drive L type elastic pressing plate to automatically press and fix power unit, and ensure that the observation port is stably connected with the L type installation slot for observation, integrated control installation is convenient and fast, test efficiency is improved, and after test, the L type installation slot can be quickly sealed, avoid impurities from entering the L type installation slot accidentally, affect the installation and test of the power unit, meanwhile, avoid the contact of the L type installation slot with air, moisture and the like to cause rust and corrosion, ensure installation precision and service life.

[0021] 2、The present application is installed through telescopic cylinder two drive adjustment cylinder stepwise down, so as to automatically open each L type installation slot, and after each power unit is placed in place, drive L type elastic pressing plate to automatically press and fix power unit, and ensure that the observation port is stably connected with the L type installation slot for observation, integrated control installation is convenient and fast, test efficiency is improved, and after test, the L type installation slot can be quickly sealed, avoid impurities from entering the L type installation slot accidentally, affect the installation and test of the power unit, meanwhile, avoid the contact of the L type installation slot with air, moisture and the like to cause rust and corrosion, ensure installation precision and service life.

[0022] 3、The present application is installed through telescopic cylinder two drive adjustment cylinder stepwise down, so as to automatically open each L type installation slot, and after each power unit is placed in place, drive L type elastic pressing plate to automatically press and fix power unit, and ensure that the observation port is stably connected with the L type installation slot for observation, integrated control installation is convenient and fast, test efficiency is improved, and after test, the L type installation slot can be quickly sealed, avoid impurities from entering the L type installation slot accidentally, affect the installation and test of the power unit, meanwhile, avoid the contact of the L type installation slot with air, moisture and the like to cause rust and corrosion, ensure installation precision and service life. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a three-dimensional structure diagram of the test bench of the present application;

[0024] Figure 2 is a three-dimensional sectional view of the test bench seat of the present application;

[0025] Figure 3 is a three-dimensional sectional view of the test bench of the present application;

[0026] Figure 4 is a three-dimensional sectional view of the test bench of the present application;

[0027] Figure 5 is a three-dimensional structure diagram of the test bench of the present application;

[0028] Figure 6 is a three-dimensional sectional view of the test bench of the present application;

[0029] Figure 7 is an explosion view of the test bench of the present application;

[0030] Figure 8This is an exploded view of the T-shaped tube and adjusting cylinder of the test bench of this invention;

[0031] Figure 9 This is an exploded view of the elastic column and force measuring sleeve of the test platform of the present invention.

[0032] Reference numerals: 1. Base; 11. Bevel gear ring; 12. Processing panel; 2. Rotating ring; 21. Bearing bracket; 22. Drive shaft; 23. Bevel gear sleeve; 24. Friction cone sleeve; 25. Support plate; 26. Telescopic cylinder one; 3. Test cylinder; 31. L-shaped mounting groove; 32. Adjusting cylinder; 33. Protrusion one; 34. Protrusion two; 35. Telescopic cylinder two; 4. Sealing ring; 41. Observation port; 42. T-tube; 43. Guide groove; 5. Force measuring sleeve; 51. Elastic column; 52. Slope; 53. Pressure sensor; 54. Adjusting column; 55. Wedge groove; 56. Connecting ring; 57. Collar; 58. Connecting rod; 6. Nail-shaped tube; 61. Slot; 62. V-groove; 63. L-shaped elastic pressure plate; 64. Movable ring; 65. Groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Example 1, as Figures 1-9 As shown, a power unit hydraulic performance test bench includes a base 1, a processing panel 12 and a rotating support assembly are provided on the base 1, a test cylinder 3 that can rotate is provided at the front end of the rotating support assembly, a plurality of L-shaped mounting slots 31 arranged in a circular array are provided around the test cylinder 3, an adjusting cylinder 32 is provided in the middle of the inner cavity of the test cylinder 3, and a telescopic cylinder 35 is fixedly connected between the adjusting cylinder 32 and the bottom of the inner cavity of the test cylinder 3.

[0035] A sealing ring 4 is rotatably sleeved around the test cylinder 3. Several observation ports 41 are provided on the sealing ring 4. A force measuring sleeve 5 is fixedly connected to the center of the observation port 41. A pressure sensor 53 is slidably connected in the force measuring sleeve 5. The pressure sensor 53 is wirelessly connected to the processing panel 12. A nail-shaped tube 6 is rotatably connected to the top of the test cylinder 3. Several slots 61 are provided around the top of the nail-shaped tube 6. An L-shaped elastic pressure plate 63 for fixing the power unit is slidably inserted into the outer wall of the nail-shaped tube 6. The adjusting cylinder 32 is used to adjust the sealing of the L-shaped mounting slot 31 and the fixing and pressure measurement of the power unit.

[0036] The number of observation ports 41 and slots 61 is the same as the number of L-shaped mounting slots 31, and there are at least three of each. The observation ports 41 and slots 61 are arranged in a circular array.

[0037] The observation hole 41 on the initial sealing ring 4 is misaligned with the L-shaped mounting groove 31, the sealing ring 4 seals the outside of the L-shaped mounting groove 31, the insertion slot 61 on the nail-shaped tube 6 is misaligned with the L-shaped mounting groove 31, and the nail-shaped tube 6 seals the top of the L-shaped mounting groove 31, thereby avoiding the accidental entry of impurities into the L-shaped mounting groove 31 when the test bench is not in use, affecting the subsequent installation and testing of the power unit, and avoiding the contact of the L-shaped mounting groove 31 with air, moisture, etc. Rust, corrosion, ensure installation accuracy and service life, when installing, control the telescopic cylinder two 35 (the telescopic end of the telescopic cylinder two 35 cannot be deflected) to drive the adjusting cylinder 32 to move down once, the sealing ring 4 automatically drives the observation hole 41 to deflect and butt joint with the outside of the L-shaped mounting groove 31, in order to observe during the installation of the power unit to ensure that it is installed in place, the synchronous force measuring sleeve 5 drives the pressure sensor 53 to turn to the outside of the L-shaped mounting groove 31, and the synchronous nail-shaped tube 6 drives the insertion slot 61 to deflect and butt joint with the top of the L-shaped mounting groove 31, thereby opening each L-shaped mounting groove 31, after placing the power unit in each L-shaped mounting groove 31 in place, control the telescopic cylinder two 35 to drive the adjusting cylinder 32 to move down twice, the sealing ring 4 drives the observation hole 41 and the force measuring sleeve 5 to continuously relatively fixed, while the nail-shaped tube 6 drives the insertion slot 61 to deflect and reset, and after the nail-shaped tube 6 resets, the L-shaped elastic pressing plate 63 automatically presses the top of the power unit to fix the position, and the synchronous pressure sensor 53 automatically extends from the force measuring sleeve 5 and extends into the L-shaped mounting groove 31 to safely abut the actuating end surface of the power unit, thereby facilitating the accurate force measurement of the pressure sensor 53 starting from zero pressure, and the subsequent control of the hydraulic actuation of each power unit, the pressure information received by the pressure sensor 53 is transmitted wirelessly to the processing panel 12. During this process, the adjusting cylinder 32 is driven by the telescopic cylinder two 35 to move down step by step, the integrated control installation is convenient and fast, and the test efficiency is improved, and after testing, it is also convenient to remove the power unit and realize the quick sealing of the L-shaped mounting groove 31, and when testing, control the test cylinder 3 to rotate on the rotating support assembly, thereby facilitating the simulation of the rotating state of the power unit during actual operation, and cooperating with the on-demand control of the rotating support assembly to rotate, thereby facilitating the adjustment of the test cylinder 3, to more realistically simulate the hydraulic actuation state of the power unit when following the guide tool in different directions under the influence of gravity, thereby improving the test accuracy and ensuring the stability and comprehensiveness of the test.

[0038] In example two, on the basis of the above-mentioned examples, the rotating support assembly comprises a rotating ring 2 rotatably connected to the front wall of the seat table 1, bearing frames 21 are fixedly connected to the upper and lower sides of the front end of the rotating ring 2, the test cylinder 3 is rotatably connected between the bearing frames 21, a drive shaft 22 is rotatably connected between the bearing frames 21, and the drive shaft 22 is driven by a speed reducer motor installed on the upper bearing frame 21. The bottom of the drive shaft 22 is movably connected with the bottom of the test cylinder 3.

[0039] When testing, the driving shaft rod 22 is rotated by a deceleration motor, the driving shaft rod 22 drives the transmission belt to rotate the test cylinder 3, thereby simulating the rotation state of the power unit when actually running following the guide tool, simulating the real, improving the simulation accuracy.

[0040] The driving shaft rod 22 is rotatably sleeved with a bevel gear sleeve 23, the bottom of the bevel gear sleeve 23 is provided with a friction cone sleeve 24 which is slidably connected with the driving shaft rod 22, the bottom of the bevel gear sleeve 23 has a friction cone groove which is matched with the friction cone sleeve 24, the bottom of the bevel gear sleeve 23 is rotatably sleeved with an abutting plate 25, the abutting plate 25 is fixedly connected with an extension cylinder one 26 between the lower bearing frame 21.

[0041] The front wall of the seat table 1 is fixedly connected with a bevel gear ring 11, the bevel gear sleeve 23 is meshingly connected with the bevel gear ring 11, the front wall edge of the bevel gear ring 11 has an annular clamping groove, the lower wall of the abutting plate 25 is arc-shaped and movably abuts with the inner wall of the annular clamping groove, the abutting plate 25 is movably connected with the left wall of the annular clamping groove.

[0042] The initial extension cylinder one 26 drives the abutting plate 25 to stably abut with the inner wall of the annular clamping groove of the front wall of the bevel gear ring 11, the friction cone sleeve 24 is separated from the bevel gear sleeve 23, the bevel gear sleeve 23 is meshingly connected with the bevel gear ring 11, the driving shaft rod 22 does not drive the bevel gear sleeve 23 to rotate when rotating, and the test cylinder 3 does not revolve, and when the test cylinder 3 needs to revolve, the extension cylinder one 26 is controlled to be elongated to drive the abutting plate 25 to release the abutting state with the inner wall of the annular clamping groove, and at the same time, the abutting plate 25 drives the friction cone sleeve 24 to abut with the friction cone groove at the bottom of the bevel gear sleeve 23, the friction cone sleeve 24 is relatively fixedly connected with the bevel gear sleeve 23, by the sliding clamping property of the friction cone sleeve 24 with the driving shaft rod 22, when the driving shaft rod 22 rotates, the friction cone sleeve 24 drives the bevel gear sleeve 23 to rotate synchronously, the bevel gear sleeve 23 meshes with the bevel gear ring 11 to drive the driving shaft rod 22 to rotate the rotating ring 2, the rotating ring 2 drives the bearing frames 21 on both sides to make the test cylinder 3 revolve, so as to more truly simulate the hydraulic actuation state of the power unit when actually following the guide tool to move in different directions under the influence of gravity, thereby improving the test accuracy, and at the same time, ensuring the stability and comprehensiveness of the test, during which the extension cylinder one 26 drives the abutting plate 25 to control the rotation and braking of the rotating ring 2, which is convenient for quickly and reliably pausing or resuming the revolution of the test cylinder 3 when needed, and at the same time, avoids the problem of motor overheating out of control caused by frequent regulation and control of directly using an additional motor to drive, thereby realizing the stable simulation of different operating states.

[0043] In example three, on the basis of the above-mentioned examples, the L-shaped mounting groove 31 is symmetrically provided with a right-angled edge protrusion near one side edge of the outer wall of the test cylinder 3 to limit the power unit.

[0044] This design facilitates reliable positioning of the power unit, preventing lateral and longitudinal displacement after installation. It ensures that once the power unit is inserted into the L-shaped mounting slot 31, it only requires the use of the L-shaped elastic pressure plate 63 to press the power unit from the top, thus achieving vertical fixation and adjustment. This reduces the number of fixing and adjustment steps, making installation easier and reducing positioning difficulty. At the same time, the right-angle protrusion restricts the power unit to be inside the L-shaped mounting slot 31 and provides corresponding operating space for the outer actuating end of the power unit in the L-shaped mounting slot 31.

[0045] In Example 4, based on the above examples, the top periphery of the nail-shaped tube 6 has a downwardly extending edge portion, which is in movable sealing contact with the upper wall of the test tube 3 and the upper wall of the upper bearing bracket 21, and the sealing ring 4 is in movable sealing contact with the lower wall of the upper bearing bracket 21.

[0046] This design ensures that the observation port 41 on the sealing ring 4 is misaligned with the L-shaped mounting groove 31, and that the slot 61 on the nail-shaped tube 6 is misaligned with the L-shaped mounting groove 31. The sealing ring 4 reliably seals the outside of the L-shaped mounting groove 31, while the nail-shaped tube 6 reliably seals the top of the L-shaped mounting groove 31. This prevents impurities from accidentally entering the L-shaped mounting groove 31 when the test bench is not in use, thus avoiding any impact on the subsequent installation and testing of the power unit. It also prevents the L-shaped mounting groove 31 from coming into contact with air, moisture, etc., thus preventing rust and corrosion and ensuring installation accuracy and service life.

[0047] Example 5: Based on the above examples, an adjustment mechanism for the nail-shaped tube 6 and the L-shaped elastic pressure plate 63 is provided.

[0048] The inner wall of the nail-shaped tube 6 has three V-shaped grooves 62 arranged in a circumferential array. The adjusting cylinder 32 is slidably inserted into the nail-shaped tube 6. The upper outer wall of the adjusting cylinder 32 is provided with a protrusion 33 that is movably engaged with the V-shaped groove 62. The bottom of the nail-shaped tube 6 is provided with a movable ring 64 that is fixedly connected to the L-shaped elastic pressure plate 63. The upper wall of the movable ring 64 is provided with three grooves 65 that are engaged with the V-shaped groove 62. The protrusion 33 is adapted to the grooves 65.

[0049] The V-shaped groove 62 is in a pouring state, the initial protrusion one 33 is movably connected with the top of the V-shaped groove 62, the adjusting cylinder 32 is controlled to move downward once by the second telescopic cylinder 35, so that the adjusting cylinder 32 drives each protrusion one 33 to move downward to the middle of the V-shaped groove 62, then the protrusion one 33 extrudes the V-shaped groove 62 to drive the nail-shaped pipe 6 to deflect, the nail-shaped pipe 6 deflects to drive the insertion groove 61 to be in butt joint with the top of the L-shaped mounting groove 31, and the power unit is provided to be inserted into the channel, then the adjusting cylinder 32 is controlled to move downward twice by the second telescopic cylinder 35, the protrusion one 33 is connected from the middle of the V-shaped groove 62 to the bottom of the V-shaped groove 62, the nail-shaped pipe 6 reversely deflects to reset to drive the L-shaped elastic pressing plate 63 to be on the top of the power unit, then when the protrusion one 33 moves downward to be connected into the recess 65 and extrudes the recess 65, the protrusion one 33 extrudes the movable ring 64 to move downward, so as to drive the L-shaped elastic pressing plate 63 to move downward to extrude and fix the power unit.

[0050] In the above embodiment, an adjusting mechanism of the sealing ring 4 is provided.

[0051] The T-shaped pipe 42 is rotatably connected to the bottom of the inner cavity of the test cylinder 3, the T-shaped pipe 42 is fixedly connected to the inner wall of the sealing ring 4, and the bottom of the test cylinder 3 is provided with a movable groove corresponding to the T-shaped pipe 42.

[0052] The inner wall of the T-shaped pipe 42 is provided with a guide groove 43, the adjusting cylinder 32 is slidably inserted into the T-shaped pipe 42, the lower outer wall of the adjusting cylinder 32 is provided with a protrusion two 34 movably connected with the guide groove 43, and the guide groove 43 is composed of an arc groove and a vertical groove connected in sequence from top to bottom.

[0053] The initial protrusion two 34 is movably connected with the top of the arc groove in the guide groove 43, after the adjusting cylinder 32 is controlled to move downward once by the second telescopic cylinder 35, the protrusion two 34 is connected to the bottom of the arc groove, the protrusion two 34 extrudes the arc groove to drive the sealing ring 4 to deflect and be in butt joint with the L-shaped mounting groove 31, so that the power unit is placed into the L-shaped mounting groove 31 for installation and observation, and safety is ensured, then the protrusion two 34 is connected from the bottom of the arc groove to the vertical groove and continuously descends along the vertical groove after the adjusting cylinder 32 is controlled to move downward twice by the second telescopic cylinder 35, and the sealing ring 4 is relatively fixed, so as to ensure that the observation port 41 is continuously and stably in butt joint with the L-shaped mounting groove 31, and the hydraulic action of the power unit is observed.

[0054] At the same time, after the observation port 41 is in butt joint with the L-shaped mounting groove 31, the force measuring sleeve 5 in the middle of the observation port 41 drives the pressure sensor 53 to be on the outside of the L-shaped mounting groove 31, and the relative fixation of the sealing ring 4 ensures the stable force measurement of the pressure sensor 53, which helps to ensure the test precision.

[0055] In the above embodiment, an adjusting mechanism of the pressure sensor 53 is provided.

[0056] The inner wall of the force measuring sleeve 5 is slidingly connected with an elastic column 51, a pressure sensor 53 is fixedly connected to the outer end of the elastic column 51, and the outer end of the pressure sensor 53 has an arc end capable of abutting against the surface of the actuating end of the power unit, the middle part of the elastic column 51 has a through slot and the upper wall has a slope surface 52, an adjusting column 54 is slidingly inserted into the force measuring sleeve 5, a wedge slot 55 is formed in the bottom of the adjusting column 54, the wedge slot 55 has an inclined surface capable of abutting against the slope surface 52, a connecting ring 56 is fixedly connected to the top of the adjusting column 54, a sleeve ring 57 is rotatably sleeved on the connecting ring 56, a connecting rod 58 is fixedly connected between the sleeve ring 57 and the outer wall of the adjusting cylinder 32, and a sliding slot is formed in the outer wall of the test cylinder 3 and matched with the connecting rod 58.

[0057] When the telescopic cylinder two 35 drives the adjusting cylinder 32 to move downward for the first time, the sealing ring 4 drives the force measuring sleeve 5 to make the pressure sensor 53 just turn to the outside of the L-shaped installation slot 31, and then the power unit is placed into the L-shaped installation slot 31, and the telescopic cylinder two 35 drives the adjusting cylinder 32 to move downward for the second time until the maximum distance is reached, the telescopic cylinder two 35 drives the connecting rod 58 to make the sleeve ring 57 and the connecting ring 56 move downward synchronously, the connecting ring 56 drives the adjusting column 54 to extrude the slope surface 52 by means of the inclined surface in the wedge slot 55, so as to drive the elastic column 51 to make the pressure sensor 53 automatically extend from the force measuring sleeve 5, and after the L-shaped elastic pressing plate 63 completely presses and fixes the power unit, the pressure sensor 53 just extends into the L-shaped installation slot 31 and abuts against the surface of the actuating end of the power unit, so as to facilitate the accurate force measurement of the pressure sensor 53 starting from zero pressure, and since the pressure sensor 53 is in the retracted state during deflection, the abrasion of the force measuring end is avoided.

[0058] During the deflection of the sealing ring 4 driven by the force measuring sleeve 5, the connecting ring 56 automatically rotates in the sleeve ring 57, which does not affect the subsequent downward movement of the sleeve ring 57 driven by the connecting ring 56, and at the same time, the connecting rod 58 is limited by the sliding slot, and the telescopic end limit deflection design of the telescopic cylinder two 35 is matched, so as to ensure that the adjusting cylinder 32 can only move up and down but cannot rotate, thereby stably driving the sealing ring 4 and the nail-shaped tube 6 to deflect.

[0059] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic performance testing bench for a power unit, comprising a base (1), characterized in that, The base (1) is provided with a processing panel (12) and a rotating support assembly. The front end of the rotating support assembly is provided with a rotatable test cylinder (3). The rotating support assembly includes a rotating ring (2) rotatably connected to the front wall of the base (1). The upper and lower sides of the front end of the rotating ring (2) are fixedly connected with bearing frames (21). The test cylinder (3) is rotatably connected between the bearing frames (21). A drive shaft (22) is rotatably connected between the bearing frames (21). The drive shaft (22) is driven by a reduction motor installed on the upper bearing frame (21). A transmission belt is movably connected between the bottom of the drive shaft (22) and the bottom of the test cylinder (3). The test cylinder (3) is provided with several L-shaped mounting slots (31) arranged in a circular array around its periphery. An adjusting cylinder (32) is provided in the middle of the inner cavity of the test cylinder (3). A telescopic cylinder (35) is fixedly connected between the adjusting cylinder (32) and the bottom of the inner cavity of the test cylinder (3). The test cylinder (3) is rotatably fitted with a sealing ring (4), and the sealing ring (4) has several observation ports (41). A force measuring sleeve (5) is fixedly connected to the center of the observation port (41). A pressure sensor (53) is slidably connected in the force measuring sleeve (5). The pressure sensor (53) is wirelessly connected to the processing panel (12). A nail-shaped tube (6) is rotatably connected to the top of the test cylinder (3). Several slots (61) are opened on the outer periphery of the top of the nail-shaped tube (6). An L-shaped elastic pressure plate (63) for fixing the power unit is slidably inserted into the outer wall of the nail-shaped tube (6). The adjusting cylinder (32) is used to adjust the sealing of the L-shaped mounting slot (31) and the fixing and pressure measurement of the power unit.

2. The hydraulic performance testing bench for a power unit according to claim 1, characterized in that, A bevel sleeve (23) is rotatably sleeved on the drive shaft (22). A friction cone sleeve (24) is slidably engaged with the drive shaft (22) at the bottom of the bevel sleeve (23). The bottom of the bevel sleeve (23) has a friction cone groove that is adapted to the friction cone sleeve (24). A stop plate (25) is rotatably sleeved at the bottom of the bevel sleeve (23). A telescopic cylinder (26) is fixedly connected between the stop plate (25) and the lower bearing bracket (21). The front wall of the base (1) is fixedly connected to a bevel gear ring (11), the bevel gear sleeve (23) is engaged with the bevel gear ring (11), the edge of the front wall of the bevel gear ring (11) has an annular groove, the lower wall of the abutment plate (25) is arc-shaped and movably abuts against the inner wall of the annular groove, and the abutment plate (25) is movably connected to the left wall of the annular groove.

3. The hydraulic performance testing bench for a power unit according to claim 2, characterized in that, The L-shaped mounting groove (31) has right-angle protrusions symmetrically arranged on one side edge near the outer wall of the test cylinder (3) to limit the position of the power unit.

4. The hydraulic performance testing bench for a power unit according to claim 3, characterized in that, The top periphery of the nail-shaped tube (6) has a downwardly extending edge portion, which is in movable sealing contact with the upper wall of the test tube (3) and the upper wall of the upper bearing bracket (21), and the sealing ring (4) is in movable sealing contact with the lower wall of the upper bearing bracket (21).

5. The hydraulic performance testing bench for a power unit according to claim 4, characterized in that, The number of observation ports (41) and slots (61) is the same as the number of L-shaped mounting slots (31), and there are at least three of each. The observation ports (41) and slots (61) are arranged in a circular array.

6. The hydraulic performance testing bench for a power unit according to claim 5, characterized in that, The inner wall of the nail-shaped tube (6) is provided with three V-shaped grooves (62) arranged in a circumferential array. The adjusting cylinder (32) is slidably inserted into the nail-shaped tube (6). The upper outer wall of the adjusting cylinder (32) is provided with a protrusion (33) that is movably engaged with the V-shaped groove (62). The bottom of the nail-shaped tube (6) is provided with a movable ring (64) that is fixedly connected to the L-shaped elastic pressure plate (63). The upper wall of the movable ring (64) is provided with three grooves (65) that are engaged with the V-shaped groove (62). The protrusion (33) is adapted to the groove (65).

7. The hydraulic performance testing bench for a power unit according to claim 6, characterized in that, The bottom of the inner cavity of the test cylinder (3) is rotatably connected to a T-shaped tube (42), the T-shaped tube (42) is fixedly connected to the inner wall of the sealing ring (4), and the bottom of the test cylinder (3) is provided with a movable groove corresponding to the T-shaped tube (42); The inner wall of the T-shaped tube (42) is provided with a guide groove (43), and the adjusting cylinder (32) is slidably inserted into the T-shaped tube (42). The lower outer wall of the adjusting cylinder (32) is provided with a second protrusion (34) that is movably engaged with the guide groove (43). The guide groove (43) is composed of a combination of an arc groove and a vertical groove connected from top to bottom.

8. The hydraulic performance testing bench for a power unit according to claim 7, characterized in that, The inner wall of the force measuring sleeve (5) is slidably connected to an elastic column (51). The pressure sensor (53) is fixedly connected to the outer end of the elastic column (51). The outer end of the pressure sensor (53) has an arc end that can be adapted to and abut against the surface of the actuating end of the power unit. The elastic column (51) has a through groove in the middle and a slope (52) on the upper wall. An adjusting column (54) is slidably inserted into the force measuring sleeve (5). A wedge groove (55) is opened at the bottom of the adjusting column (54). The wedge groove (55) has an inclined surface that can be movably abut against the slope (52). A connecting ring (56) is fixedly connected to the top of the adjusting column (54). A collar (57) is rotatably sleeved on the connecting ring (56). A connecting rod (58) is fixedly connected between the collar (57) and the outer wall of the adjusting cylinder (32). A sliding groove adapted to the connecting rod (58) is opened on the outer wall of the test cylinder (3).

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