CN114563168B - Multifunctional hydraulic support testing device and testing method - Google Patents
Multifunctional hydraulic support testing device and testing method Download PDFInfo
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- CN114563168B CN114563168B CN202210103833.5A CN202210103833A CN114563168B CN 114563168 B CN114563168 B CN 114563168B CN 202210103833 A CN202210103833 A CN 202210103833A CN 114563168 B CN114563168 B CN 114563168B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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Abstract
The invention provides a multifunctional hydraulic support test device and a test method, and relates to the technical field of test equipment. The device comprises a jacking testing mechanism, a load simulation mechanism, a base testing mechanism and a height adjusting mechanism, wherein the jacking testing mechanism is used for simulating the pressure of a top plate, and the sliding guide rail is adjusted according to the position of a top beam of the bracket; the load simulation mechanism is provided with an energy accumulator for simulating impact load, and the rack sliding rail controls the energy accumulator to move; the base test mechanism is provided with a sliding rail for adjusting the width of the base, is suitable for brackets of different types, is provided with an inclination angle changing mechanism, the supporting plate is hinged with the spherical surface at the top end of the hydraulic cylinder, and the lifting chain controls the supporting plate to change the inclination angle, so that the inclination angle test is convenient to carry out; the height adjustment of the test bed is realized through the hydraulic cylinder by the height adjustment mechanism, and the pressure can be directly applied to the top beam, and the positioning device limits the height of the test bed. The device can be used for impact load test, and the pressure sensor can monitor the dynamic change of impact load in real time, thereby providing convenience for researching the impact resistance of the hydraulic support.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a multifunctional hydraulic support test device and a test method.
Background
In the working face coal mining process, the hydraulic support can effectively support the coal seam roof, and enough working space is provided for the coal mining machine and the scraper conveyor, so that the support stability of the hydraulic support is related to the safe production of the coal mine. Because the hydraulic support is an important device for realizing the safety support of the fully mechanized coal mining face, the stability of the hydraulic support needs to be tested.
The existing four-column hydraulic support comprises a top beam, a shield beam, a four-bar mechanism, a base, front and rear upright posts and other components. The factors influencing the support stability of the hydraulic support are complex, wherein impact load caused by the collapse of the coal seam roof is a main cause of the instability of the support. The original balance state of the bracket is broken due to impact load, the load of a hinging point is changed rapidly, and fatigue damage of the hinging position of the bracket is accumulated gradually due to larger load fluctuation, so that the safety of a coal face is affected. Therefore, it is important to analyze the mechanical response of the hydraulic mount under impact load.
Disclosure of Invention
In order to study the shock resistance of the hydraulic support and realize the simulation of the mechanical response of the impact load of the hydraulic support, the invention provides a multifunctional hydraulic support test device and a test method, and the specific technical scheme is as follows.
The multifunctional hydraulic support testing device comprises a testing table, a jacking testing mechanism, a load simulation mechanism, a base testing mechanism and a height adjusting mechanism, wherein the testing table comprises a base, a cover plate, a side branch connecting rod, a testing table sliding plate and a stand column, the stand column and the side branch connecting rod are arranged between the base and the cover plate, and the testing table sliding plate is matched with the stand column; the jacking testing mechanism comprises a sliding rail base and a jacking analog hydraulic cylinder, a sliding rail is arranged on a base plate of the sliding rail base, and a plurality of jacking analog hydraulic cylinders are embedded and fixedly arranged on the sliding rail base; the base test mechanism comprises a support plate, a base, hydraulic cylinders, a support plate and a hinge, wherein a plurality of hydraulic cylinders are arranged on the base, one ends of the hydraulic cylinders are respectively provided with the support plate, the other ends of the hydraulic cylinders are connected with the support plate, and the support plate is connected with the hinge; the height adjusting mechanism comprises an electrodeless adjusting cylinder and a positioning device, wherein the electrodeless adjusting cylinder is arranged between the test bed sliding plate and the top cover, and the positioning device limits the test bed sliding plate; the load simulation mechanism comprises an energy accumulator, a punching hydraulic cylinder, a reverse regulating cylinder, a forward regulating cylinder, a supporting cylinder, a swing arm and a sliding rail support, wherein a plurality of punching hydraulic cylinders are fixedly arranged on the sliding rail support, the punching hydraulic cylinder is connected with the energy accumulator, the swing arm is hinged with a test bed, the supporting cylinder is connected with the swing arm, and the reverse regulating cylinder and the forward regulating cylinder are respectively connected with the sliding rail support and the swing arm.
Preferably, the jacking testing mechanism is detachably and fixedly connected with the test bed sliding plate, and the base testing mechanism is detachably and fixedly connected with the base.
Preferably, the two ends of the stepless regulating cylinder are respectively and fixedly connected between the top cover and the test bed sliding plate, and a plurality of stepless regulating cylinders which synchronously stretch and retract are arranged between the top cover and the test bed sliding plate.
It is also preferable that the base and the side branch connecting rod are both fixed with the ground, and the base is horizontally placed.
It is also preferable that the base test mechanism is provided with 2, the base test mechanism is arranged on the base in parallel, and the plurality of hydraulic cylinders are uniformly arranged along the length direction of the base; spherical hinge is arranged between the hydraulic cylinder and the supporting plate.
It is also preferable that the impact hydraulic cylinder is fixed on the slide rail bracket through a hydraulic cylinder support, and a displacement monitoring sensor is arranged on the hydraulic cylinder support; the top pressure analog hydraulic cylinder is also provided with a pressure sensor and a displacement sensor.
The hydraulic support test method utilizes the multifunctional hydraulic support test device, and comprises the following steps:
s1, adjusting the height of a sliding plate of a test bed in a telescopic manner by an electrodeless adjusting cylinder;
s2, installing a base test mechanism, and arranging the base test mechanism according to the model of the bracket;
s3, installing a jacking testing mechanism, lifting and attaching the hydraulic support to the lower surface of the jacking testing mechanism after installing, and arranging a jacking-pressure analog hydraulic cylinder and a top beam of the hydraulic support relatively;
s4, fixing the sliding plate of the limit test bed through a positioning device;
s5, adjusting the load simulation mechanism to be close to the shield beam, and adjusting and controlling the hydraulic cylinder support to be parallel to the shield beam of the hydraulic support by the reverse adjusting cylinder and the forward adjusting cylinder;
s6, controlling the energy accumulator to pressurize, pushing the analog hydraulic cylinder to apply load, and monitoring in real time;
s7, after the hydraulic support is stably supported, the pressure of the energy accumulator is released, the impact hydraulic cylinder impacts the shield beam, and the pressure, the posture and the displacement of the hydraulic support are monitored.
It is further preferable that the pallet is lifted to a set inclination by the hinge in step S2 when the inclined floor simulation test is performed.
It is further preferred that the roof pressure testing mechanism performs roof pressure monitoring or simulates roof loading using a stepless adjustment cylinder in cooperation with a test bed slide plate.
The multifunctional hydraulic support testing device and the testing method provided by the invention have the beneficial effects that:
(1) The test device can simulate the top plate pressure borne by the hydraulic support by arranging the top pressure test mechanism, and can directly act on uniformly distributed loads by arranging the simulation hydraulic cylinders in an embedded mode, and the sliding guide rail is convenient for combination, installation and maintenance of the device and convenient for position adjustment; the load simulation mechanism can simulate impact load, the hydraulic cylinder is controlled by the energy accumulator to output larger acting force in a short time, and the reverse adjusting cylinder and the forward adjusting cylinder are mutually matched to adjust the inclination angle of the sliding rail bracket, so that the hydraulic bracket can be attached to a shield beam of the hydraulic bracket; in addition, the slide rail support can flexibly adjust the position of the simulation mechanism.
(2) The base test mechanism of the test device is matched with the test bed, the disassembly and assembly are convenient, and the width of the base is adjusted by the sliding rails on the two sides, so that the test requirements of different types of hydraulic supports can be met, and the safety is improved; the base test mechanism realizes the test of the variable dip angle through the matching of the supporting plate and the hinge; the height adjustment mechanism realizes stepless adjustment of the height of the test bed through the two hydraulic cylinders, and can directly simulate and apply the pressure of the top plate, and the positioning device can control the height of the test bed and limit the height of the test bed so as to ensure the test precision.
(3) The method for testing by using the device is more in line with the actual stress environment of the hydraulic support, the method can be suitable for simulating tests of hydraulic supports of different types, the load simulating mechanism simulates impact load born by the hydraulic support, the method monitors the pressure, the gesture and the displacement of the hydraulic support in the test, thereby ensuring the precision of the test result, and in addition, the method has the advantages of convenient test operation, high safety and the like.
Drawings
FIG. 1 is a schematic diagram of a multifunctional hydraulic bracket test device;
FIG. 2 is a schematic diagram of a base test mechanism;
FIG. 3 is a schematic cross-sectional view of a base test mechanism;
FIG. 4 is a schematic structural view of a top pressure test mechanism;
FIG. 5 is a schematic diagram of a load simulator mechanism;
FIG. 6 is a schematic view of a portion of the structure of the load simulator;
in the figure: the device comprises a 1-stepless adjusting cylinder, a 2-positioning device, a 3-jacking testing mechanism, a 4-load simulation mechanism, a 5-cover plate, a 6-side branch connecting rod, a 7-test bed sliding plate, an 8-upright post, a 9-base testing mechanism, a 10-supporting plate, a 11-base, a 12-hydraulic cylinder, a 13-supporting plate, a 14-hinge, a 15-sliding rail base, a 16-jacking pressure-simulating hydraulic cylinder, a 17-energy accumulator, 18-fastening bolts, a 19-hydraulic cylinder support, a 20-impact hydraulic cylinder, a 21-reverse adjusting cylinder, a 22-pin roll, a 23-forward adjusting cylinder, a 24-supporting cylinder, a 25-swing arm, a 26-pin roll and a 27-sliding rail support.
Detailed Description
Referring to fig. 1 to 6, a specific embodiment of a multifunctional hydraulic support testing device and a testing method provided by the invention will be described.
A multifunctional hydraulic support test device comprises a test bed, a jacking test mechanism 3, a load simulation mechanism 4, a base test mechanism 9 and a height adjusting mechanism, wherein the jacking test mechanism adopts an embedded hydraulic cylinder and can simulate the pressure of a top plate to directly act on a hydraulic support to uniformly distribute load; the load simulation mechanism stores energy through the energy accumulator, the pressure can be maintained after the energy accumulator acts, and impact load is simulated; the base test mechanism is connected with the base through the sliding rail to adjust the width of the base, is suitable for brackets with different types, and can adjust the dip angle according to test requirements to finish the variable dip angle test of the bracket; the height adjusting mechanism can realize the adjustment of the height of the test space, can directly simulate the pressure of the top plate, and has flexible height control.
The test bed comprises a base, a cover plate 5, side branch connecting rods 6, a test bed sliding plate 7 and upright posts 8, wherein the upright posts 8 and the side branch connecting rods 6 are arranged between the base and the cover plate, the planes of the base and the cover plate 5 are arranged in parallel, more than 4 upright posts 8 can be vertically fixed between the base and the cover plate, the lower ends of the side branch connecting rods 6 are arranged in sliding grooves of the base, and the upper ends of the side branch connecting rods are fixedly connected with the cover plate through hinging; the test bed sliding plate 7 is matched with the upright post, and the test bed sliding plate 7 moves up and down along the upright post. The jacking testing mechanism 3 comprises a sliding rail base 15 and a jacking-pressure simulation hydraulic cylinder 16, a sliding rail is arranged on a base flat plate of the sliding rail base 15, a plurality of jacking-pressure simulation hydraulic cylinders 16 are embedded and fixedly arranged on the sliding rail base 15, the embedded jacking-pressure simulation hydraulic cylinders 16 can detect the pressures of different positions of a top plate in real time in a working state, and the jacking-pressure simulation testing mechanism can also be used for simulating the pressures of the top plate, including uniform load and nonuniform load. The base test mechanism 9 comprises a support plate 10, a base 11, hydraulic cylinders 12, a support plate 13 and a hinge 14, wherein the base 11 is provided with a plurality of hydraulic cylinders 12, one ends of the hydraulic cylinders 12 are respectively provided with the support plate 10, the other ends of the hydraulic cylinders 12 are connected with the support plate, and the support plate 13 is connected with the hinge 14; the supporting plate is driven to incline through the hinge 14, and the inclination angle of the base testing mechanism 9 is changed to simulate the supporting condition of the hydraulic support under different inclination angles. The height adjusting mechanism comprises an electrodeless adjusting cylinder 1 and a positioning device 2, wherein the electrodeless adjusting cylinder 1 is arranged between the jacking testing mechanism 3 and the top cover, the positioning device 2 is used for limiting the sliding plate of the test bed, the positioning device 2 comprises a plurality of limiting nuts, the limiting nuts are matched with threads on the upper portion of the upright post 8, and the position of the sliding plate of the test bed is positioned. The load simulation mechanism 4 comprises an energy accumulator 17, a flushing hydraulic cylinder 20, a reverse adjusting cylinder 21, a forward adjusting cylinder 23, a supporting cylinder 24, a swinging arm 25 and a sliding rail support 27, wherein a plurality of flushing hydraulic cylinders 20 are fixedly arranged on the sliding rail support 27, the flushing hydraulic cylinder 20 is connected with the energy accumulator 17, the swinging arm 25 is hinged with a test bed, the supporting cylinder 24 is connected with the swinging arm, the reverse adjusting cylinder 21 and the forward adjusting cylinder 23 are respectively connected with the sliding rail support 27 and the swinging arm 25, and are used for controlling the inclination angle of the sliding rail support 27 and adjusting the fit of the hydraulic cylinders with a shield beam of the hydraulic support.
The jacking testing mechanism 3 is detachably and fixedly connected with the test bed sliding plate 7, the jacking testing mechanism can be replaced according to test requirements, and the hydraulic support is suitable for being used for testing hydraulic supports of different types. The embedded hydraulic cylinder can detect the pressure of different positions of the top plate in real time in the working state, can also be used for simulating the pressure of the top plate, is embedded into the support when closed, and can directly act on the support to uniformly distribute load; the sliding guide rail is convenient for positioning and mounting the mechanism, and can be adjusted at any time according to the position of the support top beam. The jacking testing mechanism can be specifically installed through positioning of a sliding guide rail structure, and can be adjusted at any time according to the position of a support top beam, and the base testing mechanism is detachably and fixedly connected with the base. The jacking testing mechanism with various types is manufactured according to test requirements, the jacking testing mechanism is convenient to replace, the jacking simulation hydraulic cylinders with different measuring ranges are arranged, the loading range of the jacking testing mechanism can be adjusted, the jacking testing mechanism not only ensures loading flexibility, but also facilitates test operation of different hydraulic supports.
The two ends of the stepless regulating cylinder 1 are respectively and fixedly connected between the cover plate 5 and the test bed sliding plate 7, and a plurality of stepless regulating cylinders 1 which synchronously stretch out and draw back are arranged between the cover plate 5 and the test bed sliding plate 7. The height adjusting mechanism can randomly adjust the test space of the test bed through the stepless adjusting cylinder 1, and can directly realize pressurization to simulate the pressure of the top plate. The positioning device avoids the height fluctuation of the test bed possibly caused by the pressurization of the jacking testing mechanism, and ensures the test precision.
The base and the side branch connecting rod 6 are fixed with the ground, and the base is horizontally arranged, so that the accuracy of inclination adjustment is ensured, and the equipment is convenient to assemble. The base test mechanism is provided with 2, and base test mechanism parallel arrangement has made things convenient for the hydraulic support side to place on the base, and adaptability is stronger. The hydraulic cylinders are uniformly arranged along the length direction of the base. Spherical hinge is arranged between the hydraulic oil cylinder and the supporting plate, so that the vertical loading of the hydraulic oil cylinder is ensured. And the variable dip angle supporting plates are controlled by a plurality of groups of rigid chain lifting mechanisms, so that the variable dip angle test of the bracket is realized.
The impact hydraulic cylinder 20 is fixed on the slide rail bracket 27 through a hydraulic cylinder support, and a displacement monitoring sensor is arranged on the hydraulic cylinder support to accurately monitor the displacement change in the test process; the top pressure analog hydraulic cylinder 16 is also provided with a pressure sensor and a displacement sensor, and displacement and stress are monitored in real time.
The test device can simulate the top plate pressure borne by the hydraulic support by arranging the top pressure test mechanism, and can directly act on uniformly distributed loads by arranging the simulation hydraulic cylinders in an embedded mode, and the sliding guide rail is convenient for combination, installation and maintenance of the device and convenient for position adjustment; the load simulation mechanism can simulate impact load, the hydraulic cylinder is controlled by the energy accumulator to output larger acting force in a short time, and the reverse adjusting cylinder and the forward adjusting cylinder are mutually matched to adjust the inclination angle of the sliding rail bracket, so that the hydraulic bracket can be attached to a shield beam of the hydraulic bracket; in addition, the slide rail support can flexibly adjust the position of the simulation mechanism. The base test mechanism of the test device is matched with the test bed, the disassembly and assembly are convenient, and the width of the base is adjusted by the sliding rails on the two sides, so that the test requirements of different types of hydraulic supports can be met, and the safety is improved; the base test mechanism realizes the test of the variable dip angle through the matching of the supporting plate and the hinge; the height adjustment mechanism realizes stepless adjustment of the height of the test bed through the two hydraulic cylinders, and can directly simulate and apply the pressure of the top plate, and the positioning device can control the height of the test bed and limit the height of the test bed so as to ensure the test precision.
The hydraulic support test method utilizes the multifunctional hydraulic support test device, and comprises the following steps:
s1, adjusting the height of a sliding plate of the test bed in a telescopic manner by the stepless adjusting cylinder. The hydraulic support is tested by determining the proper test space height and the test scheme according to the model and the height of the test hydraulic support.
S2, installing a base test mechanism, arranging the base test mechanism according to the model of the bracket, wherein the base test mechanism can adjust the width and the dip angle in the test process.
When the tilting floor simulation test is performed, the pallet is lifted up to a set tilt angle by the hinge in step S2.
S3, installing a jacking testing mechanism, lifting and attaching the hydraulic support to the lower surface of the jacking testing mechanism after installing, and arranging a jacking-pressure analog hydraulic cylinder and a top beam of the hydraulic support relatively. The roof pressure testing mechanism monitors the roof specific pressure, or uses the stepless regulating cylinder to cooperate with the test bed sliding plate to simulate the roof load.
S4, fixing the sliding plate of the limit test bed through the positioning device.
S5, adjusting the load simulation mechanism to be close to the shield beam, and adjusting and controlling the hydraulic cylinder support to be parallel to the shield beam of the hydraulic support by the reverse adjusting cylinder and the forward adjusting cylinder.
S6, controlling the energy accumulator to pressurize, pushing the analog hydraulic cylinder to apply load, and monitoring in real time.
S7, after the hydraulic support is stably supported, the pressure of the energy accumulator is released, the impact hydraulic cylinder impacts the shield beam, and the pressure, the posture and the displacement of the hydraulic support are monitored.
Specifically, when impact load test is carried out, the stepless adjusting cylinder is contracted to drive the test bed sliding plate to lift, when the test bed sliding plate is lifted to the highest point, the hydraulic support is stably placed on the base testing mechanism with the variable dip angle, and when the inclined base plate simulation test is carried out, the variable dip angle supporting plate of the base testing mechanism with the variable dip angle is lifted to a preset angle. The stepless regulating cylinder extends out, the sliding plate of the test bed is lowered to a preset height, and the top beam of the hydraulic support is lifted until the lower surface of the top pressure testing mechanism is attached to the upper surface of the top beam. If the jacking testing mechanism is not used, the jacking testing mechanism can be disassembled, the support is lifted up until the sliding plate of the test bed is attached to the top surface of the top beam, and the top beam loading is directly carried out by the stepless regulating cylinder. And the top pressure testing mechanism is moved to enable the hydraulic cylinder to be opposite to the top beam of the test hydraulic support, and then the positioning device limits the sliding plate of the test bed. The support cylinder contracts to enable the load simulation mechanism to be close to the shield beam of the hydraulic support, the reverse adjusting cylinder and the forward adjusting cylinder are adjusted to enable the lower surface of the hydraulic cylinder support to be parallel to the shield beam of the hydraulic support through the distance monitoring sensor on the sliding rail support, and the energy accumulator is pressurized. After the hydraulic support is placed and positioned, an embedded top pressure simulation hydraulic cylinder in the detachable top pressure testing mechanism is pressurized, the top beam pressure and displacement are monitored in real time through pressure and displacement sensors, after the top plate pressure reaches a preset value and the support is stable, the pressure in the energy accumulator is released, the lower cylinder body of the impact hydraulic cylinder impacts the shield beam, the pressure in the hydraulic cylinder is continuously maintained, the pressure sensor monitors the dynamic change of impact load in real time, and the pressure, the gesture and the displacement data on each sensor are analyzed, so that a support test is completed.
The method for testing by using the device is more in line with the actual stress environment of the hydraulic support, the method can be suitable for simulating tests of hydraulic supports of different types, the load simulating mechanism simulates impact load born by the hydraulic support, the method monitors the pressure, the gesture and the displacement of the hydraulic support in the test, thereby ensuring the precision of the test result, and in addition, the method has the advantages of convenient test operation, high safety and the like.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. The multifunctional hydraulic support testing device is characterized by comprising a testing table, a jacking testing mechanism, a load simulation mechanism, a base testing mechanism and a height adjusting mechanism, wherein the testing table comprises a base, a cover plate, a side branch connecting rod, a testing table sliding plate and a stand column, the stand column and the side branch connecting rod are arranged between the base and the cover plate, and the testing table sliding plate is matched with the stand column; the jacking testing mechanism comprises a sliding rail base and a jacking analog hydraulic cylinder, a sliding rail is arranged on a base plate of the sliding rail base, and a plurality of jacking analog hydraulic cylinders are embedded and fixedly arranged on the sliding rail base; the base test mechanism comprises a support plate, a base, hydraulic cylinders, a support plate and a hinge, wherein a plurality of hydraulic cylinders are arranged on the base, one ends of the hydraulic cylinders are respectively provided with the support plate, the other ends of the hydraulic cylinders are connected with the support plate, and the support plate is connected with the hinge; the height adjusting mechanism comprises an electrodeless adjusting cylinder and a positioning device, wherein the electrodeless adjusting cylinder is arranged between the test bed sliding plate and the top cover, and the positioning device limits the test bed sliding plate; the load simulation mechanism comprises an energy accumulator, a punching hydraulic cylinder, a reverse regulating cylinder, a forward regulating cylinder, a supporting cylinder, a swing arm and a sliding rail bracket, wherein a plurality of punching hydraulic cylinders are fixedly arranged on the sliding rail bracket, the punching hydraulic cylinder is connected with the energy accumulator, the swing arm is hinged with the test bed, the supporting cylinder is connected with the swing arm, and the reverse regulating cylinder and the forward regulating cylinder are respectively connected with the sliding rail bracket and the swing arm; the impact hydraulic cylinder is fixed on the sliding rail support through a hydraulic cylinder support, and a displacement monitoring sensor is arranged on the hydraulic cylinder support; the top pressure analog hydraulic cylinder is also provided with a pressure sensor and a displacement sensor.
2. The multifunctional hydraulic support testing device according to claim 1, wherein the top pressure testing mechanism is detachably and fixedly connected with the test bed sliding plate, and the base testing mechanism is detachably and fixedly connected with the base.
3. The multifunctional hydraulic support testing device according to claim 1, wherein two ends of the stepless adjusting cylinder are fixedly connected between the top cover and the test bed sliding plate respectively, and a plurality of stepless adjusting cylinders which stretch and retract synchronously are arranged between the top cover and the test bed sliding plate.
4. The multifunctional hydraulic support testing device according to claim 1, wherein the base and the side branch connecting rods are fixed with the ground, and the base is horizontally arranged.
5. The multifunctional hydraulic support test device according to claim 1, wherein the number of the base test mechanisms is 2, the base test mechanisms are arranged on the base in parallel, and the plurality of hydraulic cylinders are uniformly arranged along the length direction of the base; spherical hinge is arranged between the hydraulic cylinder and the supporting plate.
6. A hydraulic bracket testing method using a multifunctional hydraulic bracket testing apparatus according to any one of claims 1 to 5, comprising the steps of: s1, adjusting the height of a sliding plate of a test bed in a telescopic manner by an electrodeless adjusting cylinder; s2, installing a base test mechanism, and arranging the base test mechanism according to the model of the bracket; s3, installing a jacking testing mechanism, lifting and attaching the hydraulic support to the lower surface of the jacking testing mechanism after installing, and arranging a jacking-pressure analog hydraulic cylinder and a top beam of the hydraulic support relatively; s4, fixing the sliding plate of the limit test bed through a positioning device; s5, adjusting the load simulation mechanism to be close to the shield beam, and adjusting and controlling the hydraulic cylinder support to be parallel to the shield beam of the hydraulic support by the reverse adjusting cylinder and the forward adjusting cylinder; s6, controlling the energy accumulator to pressurize, pushing the analog hydraulic cylinder to apply load, and monitoring in real time; s7, after the hydraulic support is stably supported, the pressure of the energy accumulator is released, the impact hydraulic cylinder impacts the shield beam, and the pressure, the posture and the displacement of the hydraulic support are monitored.
7. The hydraulic mount testing method according to claim 6, wherein the pallet is lifted to a set inclination by the hinge in step S2 when the inclined floor simulation test is performed.
8. The hydraulic support testing method according to claim 6, wherein the roof pressure testing mechanism monitors the roof pressure or simulates the roof load by using stepless adjusting cylinders in cooperation with the test bed sliding plate.
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