CN215893908U

CN215893908U - Water pressure testing machine for detecting air tightness of thrust wheel

Info

Publication number: CN215893908U
Application number: CN202121586425.7U
Authority: CN
Inventors: 刘美娜; 张英超; 冯春晖; 路冰
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-22
Anticipated expiration: 2031-07-13

Abstract

The utility model relates to a water pressure testing machine for detecting the air tightness of a thrust wheel, which comprises a testing water tank, a bearing platform mechanism and a lifting mechanism for driving the bearing platform mechanism to lift, wherein the lifting mechanism can drive the bearing platform mechanism to be immersed into clean water in the testing water tank, and an air tightness pressure detection air circuit is arranged on the outer wall of the testing water tank. The utility model has the following beneficial effects: simple manufacture, easy assembly, convenient use and small occupied space. Whether leak and also can fix a position the position of leaking through this water pressure test machine not only can judge the thrust wheel assembly, and the bubble can appear in the aquatic in the leakage position, makes the judgement and the location of leaking visual, and the follow-up hourglass of examining once more after repairing and repairing of being convenient for.

Description

Water pressure testing machine for detecting air tightness of thrust wheel

Technical Field

The utility model relates to a water pressure testing machine for detecting the air tightness of a thrust wheel, and belongs to the technical field of water pressure testing machines.

Background

In order to ensure that the thrust wheel assembly after being assembled is oil-tight, the existing assembly line of the thrust wheel assembly adopts a mode of full air pressure detection to detect the tightness, only can judge whether the assembly is leaked or not, and cannot judge the specific position of a defect.

The air tightness detection device adopted by some enterprises at present has large occupied area, low working efficiency, long time and high labor intensity, can only carry out single air tightness detection, and influences assembly beats, in addition, the position of leakage cannot be judged for the thrust wheel assembly with leakage in the discovery, and how to repair the thrust wheel assembly cannot be guided, and the assembly line needs to be isolated independently, the thrust wheel assembly is charged with pressure to a repair area, and then is put into water to observe a leakage point, and the water enters the water again for detection after repair, and the repair area carries out single water pressure test, so that the efficiency is low, 2 personal operations are needed, and the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

According to the defects in the prior art, the technical problems to be solved by the utility model are as follows: in order to solve one of the above problems, a water pressure testing machine for testing the air tightness of the thrust wheel is provided.

The utility model relates to a water pressure testing machine for detecting the air tightness of a thrust wheel, which is characterized in that: the test device comprises a test water tank, a bearing platform mechanism and a lifting mechanism for driving the bearing platform mechanism to lift, wherein the lifting mechanism can drive the bearing platform mechanism to sink into clean water inside the test water tank, and an air tightness pressure detection air circuit is installed on the outer wall of the test water tank.

The test water tank comprises a water tank, the upper portion and the lower portion of the water tank are respectively provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively provided with a water inlet valve and a water drain valve, and the front side face of the water tank is provided with a pressure gauge placing frame.

The gas tightness pressure detection gas circuit is including installing the manometer rack on the water tank, still include constant voltage trigeminy piece, branch road gas valve, rotary seal connects, sealed tube and main trachea, the manometer is provided with a plurality ofly, install a branch road gas valve respectively on the intake pipe of every manometer, branch road gas valve's inlet end all is linked together with main trachea, main tracheal inlet end is connected to the end of giving vent to anger of constant voltage trigeminy piece, the inlet end of constant voltage trigeminy piece is connected to the air supply through a ooff valve, the pipeline end-to-end connection that gives vent to anger of manometer has rotary seal connects, rotary seal connects and has the sealed tube of being connected with the thrust wheel oil filler point.

The middle of the sealing pipe is a through hole, one end of the sealing pipe is designed to be a step mechanism and is processed into an external thread matched with the thrust wheel oil filling hole, the root of the external thread is provided with a sealing ring, the external diameter of the thread is smaller than that of the sealing pipe, the other end of the sealing pipe is processed with a thread hole matched with the thread of a rotary sealing joint and is sealed by a sealing material belt, and handles are welded on two sides of the sealing pipe.

The lifting mechanism comprises a supporting bracket fixed on the rear side surface of the water tank, the supporting bracket comprises two vertical columns which are parallel to each other, the bottom ends of the vertical columns are fixed on the water tank, the upper ends of the vertical columns are connected together through a supporting connecting rod, a lifting cylinder mounting plate is also arranged between the two vertical columns, the upper end of a lifting cylinder body is fixed on the lifting cylinder mounting plate, the telescopic end of the lifting cylinder penetrates through the lifting cylinder mounting plate, a horizontal supporting shaft is arranged at the end part of the lifting cylinder mounting plate, two chain guide wheels are respectively arranged at the two ends of the supporting shaft, the chain guide wheels are arranged on the supporting shaft through a bearing A, one end of a chain is fixed on the lifting cylinder mounting plate, the other end of the chain bypasses the chain guide wheels to be connected with the lifting frame, a bearing platform mechanism is arranged at the bottom of the lifting frame, a roller bearing assembly B is arranged on the lifting frame, and a bearing sliding track matched with the roller bearing assembly B is arranged on the inner wall of the water tank, the roller bearing assembly B can slide up and down in the bearing sliding track.

The roller bearing assembly B is positioned at the lower part of the lifting frame, the upper part of the lifting frame is also provided with a roller bearing assembly A, and the roller bearing assembly A can slide up and down along the upright post; the chain sequentially bypasses the chain guide wheel and the auxiliary transition bearing assembly to be connected with the lifting frame; the bearing platform mechanism is characterized by further comprising a limiting bolt assembly matched with the lifting frame, and the upper surface of the bearing platform mechanism is provided with sliding angle steel for fixing the supporting wheel.

The automatic detection device is characterized by further comprising a stop limiting mechanism arranged on the front side of the water tank, the stop limiting mechanism is used for preventing an undetected thrust wheel on the conveying device from being conveyed to the bearing platform mechanism and comprises a vertical plate, a baffle is hinged to the vertical plate through a fixing bolt and a nut, a self-locking type indexing spring pin is arranged on the upper portion of the vertical plate, a pin hole matched with the self-locking type indexing spring pin is formed in the baffle, and a horizontal stop block is arranged on one side, close to the bearing platform mechanism, of the vertical plate.

The lifting cylinder is arranged on the roller bearing assembly B, the fixing rod is arranged on the roller bearing assembly B, the controller is arranged on one side of the stand column and is used for controlling the lifting cylinder to lift, and the controller is electrically connected with the battery valve used for controlling the lifting cylinder to lift.

Compared with the prior art, the utility model has the following beneficial effects:

the water pressure test machine for detecting the air tightness of the thrust wheel is simple to manufacture, easy to assemble, convenient to use and small in occupied space. The hydraulic pressure testing machine can not only judge whether the thrust wheel assembly leaks, but also position the leaking position, and bubbles can appear in the leaking position in water, so that the judgment and the positioning of the leaking are visual, and the subsequent repairing and the secondary leak checking after the repairing are convenient; the constant-pressure triple piece is used for intensively filling gas with certain pressure, so that the problems that compressed air is manually filled into a sealing assembly (the aim is to increase the pressure inside the assembly and watch the numerical value of a pressure gauge, if the pressure is reduced, the sealing performance is poor-leakage), the pressure value is inconsistent and the display precision of the pressure gauge is poor are solved, the problems that the pressure gauge is poor in sealing and cannot enter water are solved through the matching of the pressure gauge and a sealing pipe and the rotating sealing joint, the quality is ensured, and the efficiency of leakage detection is improved. The water pressure detection is carried out in groups (at least 10 pieces), and the water pressure detection is successfully integrated into an assembly line, so that the assembly beat is met, and the operation is convenient; the limiting mechanism is arranged to isolate the assembly which is not detected. The product has universality and is suitable for all products; the 2 chains and the guide wheels assist the main cylinder to move, prevent inclination and balance stress, are safe and reliable, and enable the lifting mechanism to move synchronously. The water tank is provided with a lamp tube, and light rays meet the detection requirement. The sealing pipe is provided with a plurality of rows of holes suitable for placing different sealing pipes. The control cabinet is provided with a start button, a pause button and a time relay, can set time, enables the lifting mechanism to automatically descend, automatically ascends after keeping for a certain time, and has 2 automatic modes and 2 manual modes.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a schematic view of a thrust wheel assembly and a filler point;

in the figure: 1. the device comprises a chain 2, a bearing A3, an auxiliary transition bearing assembly 4, a lifting cylinder 5, a limit bolt assembly 6, a roller bearing assembly A7, a support bracket 8, a fixing rod 9, a lifting frame 10, a roller bearing assembly B11, a sliding angle steel 12, a water inlet valve 13, a bearing sliding track 14, a water drain valve 15, a lighting lamp tube 16, a pressure gauge 17, a support connecting rod 18, a constant pressure triple piece 19, a controller 20, a slideway 21, a pressure gauge placing frame 22, a support shaft 23, a shaft elastic retainer ring 24, a shaft elastic retainer ring groove 25, a chain guide wheel 26, a branch gas valve 27, a rotary sealing joint 28, a sealing pipe 29, a sealing ring 30, a main gas pipe 31, a water tank 32, a self-locking type indexing spring pin 33, a vertical plate 34, a stop block 35, a fixing bolt and nut 36, And a baffle plate.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the utility model, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Examples

As shown in fig. 1-2, the water pressure testing machine for detecting the air tightness of the thrust wheel comprises a testing water tank, a bearing platform mechanism and a lifting mechanism for driving the bearing platform mechanism to lift, wherein the lifting mechanism can drive the bearing platform mechanism to sink into clean water in the testing water tank, and an air tightness pressure detection air circuit is installed on the outer wall of the testing water tank.

In this embodiment, the test water tank includes a water tank 31, a water inlet pipe and a water outlet pipe are respectively arranged at the upper part and the lower part of the water tank 31, a water inlet valve 12 and a water drain valve 14 are respectively arranged on the water inlet pipe and the water outlet pipe, and a pressure gauge placing frame 21 is arranged on the front side surface of the water tank 31; the air tightness pressure detection air path comprises a pressure gauge placing frame 21 arranged on a water tank 31, and further comprises a constant pressure triple piece 18, branch air valves 26, rotary sealing joints 27, sealing pipes 28 and a main air pipe 30, wherein a plurality of pressure gauges 16 are arranged, one branch air valve 26 is respectively arranged on an air inlet pipeline of each pressure gauge 16, air inlet ends of the branch air valves 26 are communicated with the main air pipe 30, an air inlet end of the main air pipe 30 is connected to an air outlet end of the constant pressure triple piece 18, an air inlet end of the constant pressure triple piece 18 is connected to an air source through a switch valve, the tail end of the air outlet pipeline of each pressure gauge 16 is connected with the rotary sealing joint 27, and the rotary sealing joint 27 is provided with the sealing pipe 28 connected with an oil filling hole of a supporting wheel; the middle of the sealing pipe 28 is a through hole, one end of the sealing pipe is designed to be a step mechanism and is processed to be an external thread matched with the thrust wheel oil injection hole, the root of the external thread is provided with a sealing ring 29, the external diameter of the thread is smaller than that of the sealing pipe, the other end of the sealing pipe is processed with a threaded hole matched with the thread of the rotary sealing joint and is sealed by a sealing material belt, and handles are welded on two sides of the sealing pipe 28; the lifting mechanism comprises a supporting bracket 7 fixed on the rear side surface of a water tank 31, the supporting bracket 7 comprises two vertical columns which are parallel to each other, the bottom ends of the vertical columns are fixed on the water tank 31, the upper ends of the vertical columns are connected together through a supporting connecting rod 17, a lifting cylinder mounting plate is further installed between the two vertical columns, the upper end of a cylinder body of a lifting cylinder 4 is fixed on the lifting cylinder mounting plate, the telescopic end of the lifting cylinder 4 penetrates through the lifting cylinder mounting plate, a horizontal supporting shaft 22 is installed at the end part of the lifting cylinder mounting plate, a chain guide wheel 25 is respectively installed at the two ends of the supporting shaft 22, the chain guide wheel 25 is installed on the supporting shaft 22 through a bearing A2, one end of a chain 1 is fixed on the lifting cylinder mounting plate, the other end of the chain guide wheel 25 is connected with a lifting frame 9 by bypassing the chain guide wheel 25, a bearing platform mechanism is installed at the bottom of the lifting frame 9, a roller bearing assembly B10 is arranged on the lifting frame 9, a bearing sliding rail 13 matched with the roller bearing assembly B10 is arranged on the inner wall of the water tank 31, the roller bearing assembly B10 can slide up and down in the bearing sliding track 13; the roller bearing assembly B10 is positioned at the lower part of the lifting frame 9, the roller bearing assembly A6 is also arranged at the upper part of the lifting frame 9, and the roller bearing assembly A6 can slide up and down along the upright post; the chain guide wheel 25 and the auxiliary transition bearing assembly 3 are sequentially wound by the chain 1 and connected with the lifting frame 9; the device also comprises a limiting bolt component 5 matched with the lifting frame 9, and the upper surface of the bearing platform mechanism is provided with a sliding angle steel 11 for fixing a supporting wheel; the device is characterized by further comprising a blocking limiting mechanism arranged on the front side of the water tank 31, the limiting mechanism is used for preventing an undetected thrust wheel on the conveying device from being conveyed onto the bearing platform mechanism, the limiting mechanism comprises a vertical plate 33, the vertical plate 33 is hinged to a baffle plate 36 through a fixing bolt and a nut 35, a self-locking type indexing spring pin 32 is arranged on the upper portion of the vertical plate 33, a pin hole matched with the self-locking type indexing spring pin 32 is formed in the baffle plate 36, and a horizontal stop block 34 is arranged on one side, close to the bearing platform mechanism, of the vertical plate 33; the lifting device further comprises a lighting device, the lighting device comprises a fixing rod 8 and a lighting lamp tube 15, the lighting lamp tube 15 is installed on the roller bearing assembly B10 through the fixing rod 8, a controller 19 for controlling the lifting cylinder 4 to lift is arranged on one side of the upright column, and the controller 19 is electrically connected with a battery valve for controlling the lifting cylinder 4 to lift.

Clean clear water containing a rust preventive is put into the water tank 31. A water inlet pipeline and a valve are arranged above the water tank, so that water can be conveniently discharged from the water tank, and a drainage pipeline and a valve are arranged below the water tank, so that water can be conveniently discharged. The material of the water tank is stainless steel or common carbon steel material (the material is selected to be coated with anti-rust primer and finish paint). The place ahead welding of water tank has the manometer rack, the manometer rack has 2 rows of through-holes, and every row is 10 holes at least, and the manometer is placed and fixed to first row, and 2 nd row (being close to water one side) can be placed and suppress sealed tube and the rotary joint subassembly of usefulness (under the non-test condition).

The working mode is as follows: compressed air (with the pressure of 0.4-0.8 MPa) passes through the gas valve and then passes through the constant-pressure triple piece, the constant-pressure triple piece can adjust the required pressing pressure value (the pressure in the pipeline can also be reduced through the air release valve to prevent the large pressure in the wheel body assembly when the sealing pipe is detached and the disassembly is not easy), then the compressed air passes through the switch and then passes through the pressure gauge fixed on the pressure gauge placing frame, the connection of the parts adopts an air pipe, the air pipe is used for connecting a rotary sealing joint and the sealing pipe, the sealing pipe is provided with a rubber sealing ring and is screwed into an oil filling hole of the thrust wheel assembly, 10 air passages are separated from the main air passage of the constant-pressure triple piece, each air passage can be connected with 1 thrust wheel assembly, each air passage is provided with 1 switch and pressure gauge, the switch can be independently controlled, the pressure gauge can also check whether the air passage is smooth and the pressure is the set pressure, the set high-pressure gas is continuously introduced into the air passage by opening the valve, then the lifting mechanism descends into the water tank, whether bubbles emerge is observed after the water surface is calm, the lifting mechanism is lifted after observing for a certain time, if the bubbles emerge, marks are made at the corresponding positions, the maintenance is carried out according to the positions, the valve on the constant-pressure triple piece is closed if the thrust wheel assembly does not emerge, the gas pressure of the pipeline is adjusted, and then the sealing pipe is detached and placed on the pressure gauge placing frame. And the branch wheel assembly continues to the next working step for oiling. The device can detect the water entering of at least 10 thrust wheel assemblies simultaneously, and is suitable for assembly beats.

Wherein, compressed air (pressure 0.4-0.8 MPa) passes through constant voltage trigeminy piece 18 again through gas valve, and constant voltage trigeminy piece 18 can adjust the pressure value 0.4MPa that suppresses that needs (the constant voltage trigeminy piece contains the bleed valve and can reduces the pressure in each gas line, and the pressure in the wheel assembly is big when preventing the sealed tube and dismantling, is difficult to dismantle), later through the switch, again through fixing the manometer 16 on manometer rack 21, the connection of above each adopts trachea 30 to connect, and rotatory sealing joint 27, sealed tube 28 are connected to the reuse trachea.

The sealing pipe 28 is characterized in that the middle of the sealing pipe 28 is a through hole, one end of the sealing pipe is designed to be a step mechanism and is processed to be a thread the same as the oil injection hole of the supporting wheel, the root of the thread is provided with a rubber sealing ring 29, the outer diameter of the thread is smaller than that of the sealing pipe, the other end of the sealing pipe is processed to be provided with a threaded hole matched with the thread of the rotary sealing joint and is sealed by a sealing material belt, and 2 handles are welded on two sides of the sealing pipe to facilitate screwing in the supporting wheel assembly.

Adopt the trachea to connect through manometer 16 and sealed tube 28, solved the current situation in that manometer 16 is sealed not good, the unable problem of entrying, cooperation through sealed tube 28 and rotary seal joint 27 makes the sealed tube convenient with being connected of thrust wheel assembly to it is sealed to have avoided tracheal winding influence, guarantees the quality and has improved leak detection's efficiency.

Divide 10 gas circuits from the main gas circuit of constant voltage trigeminy piece, 1 thrust wheel assembly can be connected to each gas circuit, each gas circuit is equipped with 1 solitary switch 26 and manometer 16, manometer 16 in each gas circuit also can inspect whether unobstructed and pressure of this gas circuit is for setting for pressure, each gas circuit is equipped with 1 solitary switch 26 and can closes alone, then can close unnecessary gas circuit valve when the thrust wheel assembly quantity that need suppress is less than 10 gas circuits, avoid letting in gas and cause the bubble to disturb the detection of other thrust wheels in the water tank. The constant-pressure triple piece is used for intensively filling gas with certain pressure, so that the problems that the pressure value is inconsistent and the display precision of the pressure gauge is poor when compressed air is manually filled into the sealing assembly (the aim is to increase the pressure in the assembly and watch the numerical value of the pressure gauge, and the sealing performance is poor if the pressure is reduced-leakage) are solved. Water pressure detection is carried out in groups (at least 10 pieces), and the water pressure detection is successfully integrated into an assembly line, so that the assembly beat is met, and the operation is convenient.

When the device works, the valve of the constant-pressure triple piece 18 is opened, set high-pressure gas (the pressure value is preferably 0.4 MPa) is continuously introduced into each gas path, the lifting mechanism descends into the water tank 31 after a start button of the control cabinet 19 is pressed (the time for keeping the thrust wheel assembly in water is set in advance, preferably 10-40S), and meanwhile, the arranged limiting mechanism is used for isolating the assembly which is not detected.

The vertical plate 33 is in threaded connection with the self-locking type indexing spring pin 32, a spring is arranged inside the self-locking type indexing spring pin 32, the baffle 36 can rotate by pulling the pin and then rotating, the baffle 36 falls on the stop block 34, the baffle 36 is changed from vertical to horizontal, and the undetected supporting wheel assembly is prevented from falling or sliding onto the sliding angle steel 11. And a baffle plate 36 having two holes, one hole being hinged to the vertical plate 33 by a fixing bolt and a nut 35, and the other hole being adapted to cooperate with the self-locking type indexing spring pin 32 to keep the baffle plate 36 vertically stationary.

Support connecting rod 17 and support bracket 7 welding and weld with water tank 31, hoist mechanism relies on 2 chains 1, chain guide wheel 25, bearing 2, supplementary bearing assembly 3 and back shaft 22, lift cylinder 4 carries out the up-and-down motion, drive bearing platform mechanism and move, bearing platform mechanism relies on gyro wheel bearing subassembly B10 to move on bearing sliding rail 13 and gyro wheel bearing subassembly A6 rolls on support bracket 7, restrict hoist mechanism's left and right sides, can prevent hoist mechanism slope and balanced atress, safety and reliability. The limit bolt assembly 5 limits the maximum elevation height when the lifting mechanism is raised. The lifting frame 9 is firmly connected with the other end of the chain 1 by a rivet, so that the lifting frame 9 can move up and down along with the movement of the chain 1.

There is the promotion cylinder mounting panel on promoting cylinder 4, and the rivet firm in connection is used with the one end of chain 1 to the welding fixing base on promoting the cylinder mounting panel, fixes.

The supporting shaft 22 is characterized in that a shaft matched with the bearing is welded above the main supporting shaft, the left length and the right length are equal, the main cylinder is guaranteed not to incline and balance stress when moving, the lifting mechanism is safe and reliable, the lifting mechanism moves synchronously, shaft elastic retainer ring grooves are designed at two ends of the shaft matched with the bearing and are used for being matched with the elastic retainer rings 23 to prevent the bearing from moving, the material is selected from 45# hardening and tempering, the surface quenching and tempering hardness is more than or equal to 50HRC, and the bearing is wear-resistant and impact-resistant.

The roller bearing assembly A6 and the roller bearing assembly B10 are characterized in that 1 of the roller bearings 6 is fixed in a U-shaped groove of the lifting frame 9 through nuts, and slides up and down by taking the support bracket 7 as a track, so that the lifting frame 9 is supported and positioned. The other roller bearing 10 is fixed below the lifting frame 9 through a nut and moves on a roller bearing sliding track 13 welded in the water tank 31, and the 2 roller bearings support the lifting frame and simultaneously play a role in limiting left and right, so that the lifting frame is prevented from moving left and right, the vertical movement of the lifting frame and the horizontal movement under stress are ensured, and the stable vertical movement is ensured.

The supporting bracket 7 is characterized in that the supporting bracket 7 is welded with a limiting bolt component 5, the ascending position of the lifting frame 9 is limited by adjusting the upper position and the lower position of the bolt, the ascending slide way 20 is parallel and level with the original track on the assembly line, and the thrust wheel assembly can roll on the sliding angle steel 11 on the bearing platform structure conveniently.

The sliding angle steel 11 is characterized in that the material is selected from No. 45 hardening and tempering, the surface quenching and tempering hardness is more than or equal to 50HRC, the sliding angle steel has wear resistance and impact resistance, and supports and limits the fore-and-aft movement of the thrust wheel.

The upper surface of the bearing platform mechanism is provided with a slideway 20 matched with the sliding angle steel 11, the sliding angle steel 11 is fixed by a bolt, the distance of the sliding angle steel 11 used for fixing the thrust wheel can be adjusted to meet the limiting and supporting functions of different thrust wheels, and the thrust wheels are prevented from moving left and right.

Clean clear water containing an antirust agent is put into the water tank 31 in advance, whether bubbles emerge or not is observed after the water surface is calm, the clear water is lifted after a certain time is observed, if the bubbles emerge, a mark is made at a corresponding position, maintenance is carried out according to the position, a valve on the constant-pressure triple piece 18 is closed if the thrust wheel assembly does not leak, the gas pressure of a pipeline is adjusted to be released, and then the sealing pipe 28 is detached and placed on the pressure gauge placing frame 21. The water tank is provided with a lamp tube, and light rays meet the detection requirement.

The water pressure testing machine has universality and is suitable for all products; the sealing pipe is provided with a plurality of rows of holes suitable for placing different sealing pipes. The control cabinet is provided with a start button, a pause button and a time relay, can set time, enables the lifting mechanism to automatically descend, automatically ascends after keeping for a certain time, and has 2 automatic modes and 2 manual modes.

And the branch wheel assembly continues to the next working step for oiling. The device can detect the water entering of at least 10 thrust wheel assemblies simultaneously, and is suitable for assembly beats. The hydraulic pressure testing machine can not only judge whether the thrust wheel assembly leaks, but also position the leaking position, and bubbles can appear in the leaking position in water, so that the judgment and the positioning of the leaking are visual, and the subsequent repairing and the secondary leak checking after the repairing are convenient; has universality and is suitable for all products.

Interpretation of related terms

And (4) leakage checking: and detecting the air tightness of the thrust wheel and whether the air tightness leaks.

A time relay: the relay protection device is a relay protection device, and mainly utilizes an electromagnetic principle or a mechanical principle to realize a delay control circuit. A time relay can also be said to be an electrical component used in a lower voltage or lower current circuit to switch on or off a higher voltage, higher current circuit.

And (3) air tightness detection: the seal assembly is manually inflated with compressed air in order to increase the pressure inside the assembly, to view the value of the pressure gauge, and if the pressure decreases the seal is not good-leaking.

And (3) water pressure testing: and (3) putting the wheel body assembly filled with positive pressure into a water tank, wherein the pressure inside the assembly is greater than the pressure of water, if leakage exists, the pressure in the assembly is reduced, bubbles can appear in the water at the leakage position, and the leakage point is judged according to the position of the bubbles.

Pressing: the thrust wheel assembly is charged with higher pressure compressed air.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a detect water pressure test machine of thrust wheel gas tightness which characterized in that: the test device comprises a test water tank, a bearing platform mechanism and a lifting mechanism for driving the bearing platform mechanism to lift, wherein the lifting mechanism can drive the bearing platform mechanism to sink into clean water inside the test water tank, and an air tightness pressure detection air circuit is installed on the outer wall of the test water tank.

2. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 1, wherein: the test water tank comprises a water tank (31), the upper portion and the lower portion of the water tank (31) are respectively provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively provided with a water inlet valve (12) and a water drain valve (14), and a pressure gauge placing frame (21) is installed on the front side face of the water tank (31).

3. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 2, wherein: the gas tightness pressure detection gas circuit is including installing manometer rack (21) on water tank (31), still include constant voltage trigeminy piece (18), branch road gas valve (26), rotary seal connects (27), sealed tube (28) and main trachea (30), manometer (16) are provided with a plurality ofly, install a branch road gas valve (26) on the intake pipe way of every manometer (16) respectively, the inlet end of branch road gas valve (26) all is linked together with main trachea (30), the inlet end of main trachea (30) is connected to the end of giving vent to anger of constant voltage trigeminy piece (18), the inlet end of constant voltage trigeminy piece (18) is connected to the air supply through a ooff valve, the air outlet pipe end-to-end connection of manometer (16) has rotary seal connects (27), have sealed tube (28) of being connected with the thrust wheel oil filler point on rotary seal connects (27).

4. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 3, wherein: the middle of sealed tube (28) is the through-hole, and one end design is step mechanism, processes into the external screw thread with thrust wheel oil filler point matched with, and the external screw thread root is furnished with sealing washer (29), and the external diameter of screw thread is less than the external diameter of sealed tube, and the other end processing has the screw hole with rotary seal joint's screw-thread fit to seal with the sealing material area, the both sides welding of sealed tube (28) has the handle.

5. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 4, wherein: the lifting mechanism comprises a supporting bracket (7) fixed on the rear side surface of a water tank (31), the supporting bracket (7) comprises two vertical columns which are parallel to each other, the bottom ends of the vertical columns are fixed on the water tank (31), the upper ends of the vertical columns are connected together through a supporting connecting rod (17), a lifting cylinder mounting plate is further installed between the two vertical columns, the upper end of a cylinder body of a lifting cylinder (4) is fixed on the lifting cylinder mounting plate, the telescopic end of the lifting cylinder (4) penetrates through the lifting cylinder mounting plate, a horizontal supporting shaft (22) is installed at the end part of the lifting cylinder mounting plate, a chain guide wheel (25) is respectively installed at the two ends of the supporting shaft (22), the chain guide wheel (25) is installed on the supporting shaft (22) through a bearing A (2), one end of a chain (1) is fixed on the lifting cylinder mounting plate, the other end of the chain guide wheel (25) is connected with a lifting frame (9) in a bypassing way, and a bearing platform mechanism is installed at the bottom of the lifting frame (9), a roller bearing component B (10) is arranged on the lifting frame (9), a bearing sliding track (13) matched with the roller bearing component B (10) is arranged on the inner wall of the water tank (31), and the roller bearing component B (10) can slide up and down in the bearing sliding track (13).

6. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 5, wherein: the roller bearing assembly B (10) is positioned at the lower part of the lifting frame (9), a roller bearing assembly A (6) is further installed at the upper part of the lifting frame (9), and the roller bearing assembly A (6) can slide up and down along the upright post; the chain guide wheel (25) and the auxiliary transition bearing assembly (3) are sequentially wound by the chain (1) and are connected with the lifting frame (9); the bearing platform mechanism is characterized by further comprising a limiting bolt assembly (5) matched with the lifting frame (9), and the upper surface of the bearing platform mechanism is provided with sliding angle steel (11) for fixing supporting wheels.

7. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 6, wherein: the automatic detection device is characterized by further comprising a blocking limiting mechanism arranged on the front side of the water tank (31), the undetected thrust wheel on the conveying device is prevented from being conveyed to the bearing platform mechanism, the limiting mechanism comprises a vertical plate (33), a baffle (36) is hinged to the vertical plate (33) through a fixing bolt and a nut (35), a self-locking type indexing spring pin (32) is arranged on the upper portion of the vertical plate (33), a pin hole matched with the self-locking type indexing spring pin (32) is formed in the baffle (36), and a horizontal stop block (34) is arranged on one side, close to the bearing platform mechanism, of the vertical plate (33).

8. The water pressure testing machine for testing the airtightness of the thrust wheel according to claim 7, wherein: the roller bearing assembly further comprises a lighting device, the lighting device comprises a fixing rod (8) and a lighting lamp tube (15), the lighting lamp tube (15) is installed on the roller bearing assembly B (10) through the fixing rod (8), a controller (19) for controlling the lifting cylinder (4) to lift is arranged on one side of the upright column, and the controller (19) is electrically connected with a battery valve for controlling the lifting cylinder (4) to lift.