CN116558865B - Hydraulic rock drill buffer device simulation test device - Google Patents
Hydraulic rock drill buffer device simulation test device Download PDFInfo
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- CN116558865B CN116558865B CN202310816686.0A CN202310816686A CN116558865B CN 116558865 B CN116558865 B CN 116558865B CN 202310816686 A CN202310816686 A CN 202310816686A CN 116558865 B CN116558865 B CN 116558865B
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- 239000000872 buffer Substances 0.000 title claims abstract description 116
- 239000011435 rock Substances 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000004088 simulation Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 claims description 27
- 230000003139 buffering effect Effects 0.000 claims description 22
- 238000005553 drilling Methods 0.000 claims description 20
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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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
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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Abstract
The application discloses a hydraulic rock drill buffer device simulation test device, which comprises a mounting frame, an impact piston, a mounting part, a height adjusting part, a drill rod, an object to be chiseled, a hydraulic device, a thrust cylinder, a buffer device and a measuring device, wherein the mounting part is used for mounting the impact piston and releasing the impact piston, and the height adjusting part is used for adjusting the height of the mounting part; the buffer device comprises a cylinder body and a buffer piston, the hydraulic device supplies pressure oil to an oil inlet of the buffer device during simulation test, the pressure oil flowing in from the oil inlet of the thrust cylinder enables the thrust cylinder to keep thrust force on the buffer device during the simulation test, and the measuring device comprises a first detecting device for detecting the pressure and flow of the pressure oil entering the oil inlet of the buffer device, a second detecting device for detecting the pressure and flow of the pressure oil entering the oil inlet of the thrust cylinder, and a third detecting device for detecting the speed of the impact piston when the impact drill rod is hit during the simulation test and detecting the speed of the buffer piston.
Description
Technical Field
The application relates to the field of simulation test devices, in particular to a simulation test device for a buffer device of a hydraulic rock drill.
Background
The hydraulic rock drill is widely applied to the field of rock and soil crushing in mines, hydropower, tunnel traffic and the like, and the establishment of a simulation test device for the performance of the hydraulic rock drill has great significance for the research and development of the rock drill. The test and simulation test devices of the prior hydraulic rock drilling equipment in China are mainly concentrated on the research on the projects of impact energy, impact frequency, impact fluctuation, service life and the like, and lack of simulation test research on the buffering performance of the hydraulic rock drilling machine, and the buffering performance of the hydraulic rock drilling machine has great significance on the design, vibration, overall performance, service life and the like of an anti-reverse-drilling system of the rock drilling machine.
Disclosure of Invention
The application aims to provide a hydraulic rock drill buffer device simulation test device capable of researching the buffer performance of a hydraulic rock drill.
The application discloses a hydraulic rock drill buffer device simulation test device, which comprises a mounting frame, an impact piston, a mounting part, a height adjusting part, a drill rod, an object to be drilled, a hydraulic device, a thrust cylinder, a buffer device and a measuring device, wherein the mounting part is used for mounting the impact piston and releasing the impact piston so that the impact piston freely falls down and hits the drill rod, and the height adjusting part is used for adjusting the height of the mounting part; the buffer device comprises a cylinder body and a hollow buffer piston positioned in the cylinder body, the thrust cylinder is connected between the mounting frame and the cylinder body, the drill rod is arranged in the buffer piston along the vertical direction, the hydraulic device is in fluid connection with an oil inlet and an oil return port of the thrust cylinder and the oil inlet and the oil return port of the buffer device, the hydraulic device provides pressure oil for the oil inlet of the buffer device during simulation test, the pressure oil flowing in from the oil inlet of the buffer device enables the drill rod to be positioned at a drilling preparation position abutting against an object to be drilled through the buffer piston before being hit by the impact piston, and when the drill rod is bounced after being hit by the object to be drilled, the pressure oil flowing in from the oil inlet of the buffer device buffers the drill rod and enables the drill rod to return to the drilling preparation position, the thrust cylinder maintains the thrust force for the buffer device during simulation test, and the measurement device comprises a first pressure oil flow detection device for detecting the pressure oil entering the buffer device, a second pressure oil inlet and a second pressure oil flow detection device for detecting the pressure oil inlet of the buffer cylinder, and a third pressure oil flow detection device for detecting the impact speed of the drill rod during the simulation test.
In some embodiments, the hydraulic device further comprises a first detection device, wherein the first detection device comprises a first pressure sensor and a first flow sensor which are connected with the control device in a signal manner and are arranged between the hydraulic device and an oil inlet of the buffer device.
In some embodiments, the second detection device comprises a second pressure sensor and a second flow sensor, which are in signal connection with the control device and are arranged between the hydraulic device and the oil inlet of the propulsion cylinder.
In some embodiments, the control device comprises a computer and a data collector signally connected between the first, second and third detection devices and the computer, the first detection device further comprises a first pressure analyzer signally connected between the first pressure sensor and the data collector and a first flow analyzer signally connected between the first flow sensor and the data collector, and the second detection device further comprises a second pressure analyzer signally connected between the second pressure sensor and the data collector and a second flow analyzer signally connected between the second flow sensor and the data collector.
In some embodiments, the third detection means comprises a velocimeter in signal connection with the control means and a first speed detector in signal connection with the velocimeter for detecting the speed of the impact piston when striking the drill rod and a second speed detector for detecting the speed of the buffer piston.
In some embodiments, the mounting member includes a chuck for mounting the impact piston and a cross bar connected between the height adjustment member and the chuck, the chuck being located directly above the drill rod.
In some embodiments, the buffer device further comprises a bushing which surrounds the buffer piston, is arranged between the buffer piston and the cylinder body and is fixed relative to the cylinder body, and the bushing is provided with an oil inlet channel communicated with an oil inlet of the buffer device and an oil return channel connected with an oil return port of the buffer device; when the drill rod is positioned at the drilling preparation position, a first cavity and a second cavity are formed between the buffer piston and the bushing, the second cavity, the first cavity and the oil return channel are all separated, and the second cavity is communicated with the oil inlet channel; after the drill rod is hit by the impact piston and the buffer piston moves downwards along the height direction, the second cavity is communicated with the first cavity, the oil inlet channel and the oil return channel.
In some embodiments, the drill rod further comprises a spacer bush, hollow end covers and a stop ring, wherein the hollow end covers and the stop ring are respectively arranged at two ends of the cylinder body, the buffer piston extends out of the end covers and is in sliding sealing connection with the end covers, the drill rod comprises a rod body extending out of the end covers, and drill bits connected with the rod body and arranged at two sides of the stop ring, the drill bits are used for chiseling an object to be chiseled, the stop ring limits the rod body and the drill bits of the drill rod at two sides of the stop ring along the axial direction, the drill rod further comprises a spline arranged on the rod body, the buffer piston comprises a skirt-shaped end part, the spacer bush is arranged around the drill rod and is arranged in a cavity of the skirt-shaped end part, and two axial ends of the spacer bush are respectively contacted with step surfaces of the spline and the skirt-shaped end part.
In some embodiments, the stop ring comprises two separable half rings.
According to the simulation test device for the hydraulic rock drill buffer device, provided by the application, the buffer performance of the buffer device when the impact piston of the hydraulic rock drill hits the drill rod can be simulated by arranging the mounting frame, the impact piston, the mounting part, the height adjusting part, the drill rod, the object to be drilled, the hydraulic device, the pushing oil cylinder, the buffer device, the measuring device and other elements and parts, and the buffer performance data of the hydraulic rock drill can be obtained through the measurement of the measuring device, so that the buffer performance of the hydraulic rock drill can be studied.
Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic structural diagram of a hydraulic rock drill buffer device simulation test device according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional structural view of a damping device of the hydraulic rock drill damping device simulation test device of FIG. 1;
FIG. 3 is an enlarged partial schematic view of the structure of FIG. 2;
fig. 4 is a schematic structural view of a part of the structure of the stop ring of the structure shown in fig. 2.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms are not meant to have any special meaning unless otherwise indicated, so that the scope of the present application is not to be construed as being limited.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 3, the hydraulic rock drill buffering device simulation test device of the present embodiment includes a mounting frame 1, an impact piston 4, a mounting part 3, a height adjusting part 8, a drill rod 5, an object to be drilled 6, a hydraulic device, a thrust cylinder 7, a buffering device 2, and a measuring device.
In the embodiment shown in fig. 1, the mounting 1 is a column and the object 6 to be chiseled is rock. The mounting part 3 is used for mounting the impact piston 4 and releasing the impact piston 4 so that the impact piston 4 freely falls and hits the drill rod 5, i.e. the mounting part 3 can mount the impact piston 4 thereon so that the impact piston 4 maintains a certain height, while the mounting part 3 can also release the impact piston 4 mounted thereon at a certain height so that the impact piston 4 freely falls and hits the drill rod 5 located directly therebelow. The height adjusting member 8 is used to adjust the height of the mounting member 3 so that the height of the impact piston 4 mounted on the mounting member 3 can be adjusted. As shown in fig. 2 and 3, the buffer device 2 includes a cylinder 24 and a hollow buffer piston 22 located in the cylinder 24, the thrust cylinder 7 is connected between the mounting frame 1 and the cylinder 24, the drill rod 5 is disposed in the buffer piston 22 in the vertical direction, and the drill rod 5 is located directly below the impact piston 4. The hydraulic means are in fluid connection with the oil inlet and return opening of the thrust cylinder 7 and with the oil inlet 241 of the buffer means and the return opening 242 of the buffer means. In the simulation test, the hydraulic device provides pressure oil to the oil inlet 241 of the buffer device and the oil inlet of the pushing device, the pressure oil flowing in from the oil inlet 241 of the buffer device enables the drill rod 5 to be positioned at a drilling preparation position for abutting against the object 6 to be drilled through the buffer piston 22 before being hit by the impact piston 4, and when the drill rod 5 is rebounded after drilling the object 6 to be drilled, the pressure oil flowing in from the oil inlet 241 of the buffer device buffers the drill rod 5 and enables the drill rod 5 to be restored to the drilling preparation position; that is, before the drill rod 5 is hit by the impact piston 4, the oil inlet 241 of the buffer device pushes the buffer piston 22 downwards, the buffer piston 22 pushes the drill rod 5 downwards, the drill rod 5 is at a drilling preparation position for pressing the object 6 to be drilled, after the impact piston 4 hits the drill rod 5, the drill rod 5 moves downwards to drill the object 6 to be drilled, then rebound upwards, the drill rod 5 drives the buffer piston 22 to move upwards, and at the moment, pressure oil flowing in from the oil inlet 241 of the buffer device blocks and buffers the upwards movement of the buffer device 2, so that the drill rod 5 is quickly restored to the drilling preparation position for pressing the object 6 to be drilled, and the next impact by the impact piston 4 is prepared. The damping device 2 can simulate the damping device 2 of a hydraulic rock drill. The pressure oil flowing in from the oil inlet of the propulsion oil cylinder 7 enables the propulsion oil cylinder 7 to keep propulsion force on the buffer device 2 in a simulation test, and the structure and the function of the propulsion oil cylinder 7 are similar to those of the propulsion device of the hydraulic rock drill, so that the propulsion oil cylinder 7 can simulate the action effect of the propulsion device in the working process of the hydraulic rock drill. The measuring means comprises first detecting means for detecting the pressure and flow of the pressure oil entering the oil inlet 241 of the buffer means, second detecting means for detecting the pressure and flow of the pressure oil entering the oil inlet of the thrust cylinder 7, and third detecting means for detecting the speed of the impact piston 4 when striking the drill rod 5 and detecting the speed of the buffer piston 22 at the time of the simulation test. The measurement device is arranged to detect the pressure and flow of the pressure oil of the oil inlet 241 of the buffer device, the pressure and flow of the pressure oil of the oil inlet of the pushing cylinder 7, the speed of the impact piston 4 when the drill rod 5 is hit and the speed of the buffer piston 22 in the whole process of drilling the object 6 to be drilled, so that the simulation test data of the hydraulic rock drill buffer device 2 can be obtained.
According to the simulation test device for the hydraulic rock drill buffer device, the buffer performance of the buffer device 2 when the impact piston 4 of the hydraulic rock drill hits the drill rod 5 can be simulated through the installation of the installation frame 1, the impact piston 4, the installation component 3, the height adjusting component 8, the drill rod 5, the object to be drilled 6, the hydraulic device, the pushing oil cylinder 7, the buffer device 2, the measuring device and other elements and components, and the buffer performance data of the hydraulic rock drill can be obtained through the measurement of the measuring device, so that the buffer performance of the hydraulic rock drill can be studied. The relation between the motion track of the buffer piston 22 and the buffer propelling force and the buffer performance under the specific buffer pressure and flow conditions can be obtained through data acquisition and analysis. By analyzing the relation between the motion trajectory of the damping piston 22 and the damping capacity of the damping propulsion force, the impact frequency, impact energy etc. of the impact piston 4 can be better adapted to achieve an optimal damping capacity of the hydraulic rock drill.
In some embodiments, as shown in fig. 1, the hydraulic rock drill buffering device simulation test device further comprises a control device, and the first detection device comprises a first pressure sensor 111 and a first flow sensor 121 which are connected with the control device in a signal manner and are arranged between the hydraulic device and an oil inlet 241 of the buffering device.
In some embodiments, as shown in fig. 1, the second detection means comprises a second pressure sensor 112 and a second flow sensor 122, which are in signal connection with the control means, provided between the hydraulic means and the oil inlet of the thrust cylinder 7.
In some embodiments, as shown in fig. 1, the control device includes a computer 18 and a data collector 17 signally connected between the first, second and third detection devices and the computer 18, the data collector 17 collecting and communicating detection data of the first, second and third detection devices to the computer. The first detection means further comprises a first pressure analyzer 131 signally connected between the first pressure sensor 111 and the data collector 17 and a first flow analyzer 141 signally connected between the first flow sensor 121 and the data collector 17, and the second detection means further comprises a second pressure analyzer 132 signally connected between the second pressure sensor 112 and the data collector 17 and a second flow analyzer 142 signally connected between the second flow sensor 122 and the data collector 17.
In some embodiments, the third detection means comprise a tachometer 16 in signal connection with the control means and a first speed detector 10 in signal connection with the tachometer 16 for detecting the speed of the impact piston 4 when striking the drill rod 5 and a second speed detector 9 for detecting the speed of the buffer piston 22. The tachometer comprises a radar tachometer or a laser tachometer, and when the tachometer 16 comprises a laser tachometer, the first speed detector 10 and the second speed detector 9 are laser transmitters, respectively the impulse piston 4 and the buffer piston 22 are provided with reflecting means for reflecting laser light.
In some embodiments, as shown in fig. 1, the mounting part 3 comprises a chuck for mounting the impact piston 4 and a cross bar connected between the height adjustment part 8 and the chuck, the chuck being located directly above the drill rod 5. When the impact piston 4 is mounted on the mounting member 3, the chuck is tightened to fix the impact piston 4, and when the chuck is loosened, the impact piston 4 is released.
In some embodiments, as shown in fig. 2 and 3, the hydraulic rock drill buffering device simulation test device further comprises a bushing 25 surrounding the buffering piston 22 and arranged between the buffering piston 22 and the cylinder 24 and fixed relative to the cylinder 24, wherein an oil inlet channel 243 communicated with an oil inlet 241 of the buffering device and an oil return channel 244 connected with an oil return opening 242 of the buffering device are arranged on the bushing 25. In the illustrated embodiment, an oil inlet chamber 245 and an oil return chamber 247 are formed between the outer side surface of the buffer piston 22 and the cylinder 24, the oil inlet channel 243 communicates with the oil inlet 241 of the buffer device through the oil inlet chamber 245, and the oil return channel 244 communicates with the oil return opening 242 of the buffer device through the oil return chamber 247. When the drill rod 5 is in the drilling preparation position, a first cavity 248 and a second cavity 246 are also formed between the buffer piston 22 and the bushing 25, and the second cavity 246, the first cavity 248 and the oil return channel 244 are all isolated, i.e. the second cavity 246, the first cavity 248 and the oil return channel 244 are not in fluid communication at this time, and the second cavity 246 is communicated with the oil inlet channel 243. After the buffer piston 22 moves down in the height direction after the drill rod 5 is struck by the impact piston 4, the second chamber 246 is communicated with the first chamber 248, the oil inlet channel 243 and the oil return channel 244, at this time, the pressure oil entering from the second chamber 246 charges the first chamber 248 with oil, and the pressure oil also returns from the oil return channel 244, the buffer piston 22 can smoothly move down together with the drill rod 5 to chisel an object to be chisel. When the drill rod 5 rebounds, the buffer piston 22 moves upwards along with the drill rod 5, the second cavity 246 is separated from the oil return channel 244, and the oil in the first cavity 248 blocks and buffers the upward movement of the buffer piston 22, so that the drill rod 5 can be quickly and stably restored to the drilling preparation position.
In some embodiments, as shown in fig. 2 and 3, the hydraulic rock drill buffering device simulation test device further comprises a spacer 26, and hollow end caps 23 and stop rings 27 respectively positioned at two ends of the cylinder 24, wherein the end caps 23 and the stop rings 27 are mounted at two ends of the cylinder 24 through screws. The buffer piston 22 extends out of the end cover 23 and is in sliding sealing connection with the end cover 23, the drill rod 5 comprises a rod body extending out of the end cover 23 and drill bits connected with the rod body and located on two sides of the stop ring 27, the drill bits are used for chiseling the object 6 to be chiseled, the stop ring 27 limits the rod body and the drill bits of the drill rod 5 on two sides of the stop ring 27 in the axial direction, the drill rod 5 further comprises a spline 51 arranged on the rod body, the buffer piston 22 comprises a skirt-shaped end 221, the spacer 26 is arranged around the drill rod 5 and located in a cavity of the skirt-shaped end 221, and two axial ends of the spacer 26 are respectively contacted with the spline 51 and step surfaces of the skirt-shaped end 221. Before the impact piston 4 hits the drill rod 5, the pressure oil entering from the oil inlet 241 of the buffering means presses down the buffering piston 22 in the height direction, the buffering piston 22 presses down one end face of the spacer 26 through the step face of the skirt-shaped end 221, and the other end face of the spacer 26 presses down the spline 51, thereby pressing the drill rod 5 against the object to be chiseled.
In some embodiments, as shown in fig. 4, the stop ring 27 comprises two separable half rings 271.
In some embodiments, the hydraulic device comprises a tank 15 and a first and a second hydraulic pump 101, 102 for supplying oil to the buffer device 2 and the propulsion cylinders 7, respectively, as shown in fig. 1.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; while the application has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present application or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the application, it is intended to cover the scope of the application as claimed.
Claims (9)
1. The hydraulic rock drill buffer device simulation test device is characterized by comprising a mounting frame, an impact piston, a mounting part, a height adjusting part, a drill rod, an object to be drilled, a hydraulic device, a thrust cylinder, a buffer device and a measuring device, wherein the mounting part is used for mounting the impact piston and releasing the impact piston so that the impact piston freely falls down and hits the drill rod, and the height adjusting part is used for adjusting the height of the mounting part; the buffer device comprises a cylinder body and a hollow buffer piston positioned in the cylinder body, the thrust cylinder is connected between the mounting frame and the cylinder body, the drill rod is arranged in the buffer piston along the vertical direction, the hydraulic device is in fluid connection with an oil inlet and an oil return port of the thrust cylinder and the oil inlet and the oil return port of the buffer device, the hydraulic device provides pressure oil for the oil inlet of the buffer device during simulation test, the pressure oil flowing in from the oil inlet of the buffer device enables the drill rod to be positioned at a drilling preparation position abutting against an object to be drilled through the buffer piston before being hit by the impact piston, and when the drill rod is bounced after being hit by the object to be drilled, the pressure oil flowing in from the oil inlet of the buffer device buffers the drill rod and enables the drill rod to return to the drilling preparation position, the thrust cylinder maintains the thrust force for the buffer device during simulation test, and the measurement device comprises a first pressure oil flow detection device for detecting the pressure oil entering the buffer device, a second pressure oil inlet and a second pressure oil flow detection device for detecting the pressure oil inlet of the buffer cylinder, and a third pressure oil flow detection device for detecting the impact speed of the drill rod during the simulation test.
2. The hydraulic rock drill buffering device simulation test device according to claim 1, further comprising a control device, wherein the first detection device comprises a first pressure sensor and a first flow sensor which are connected with the control device in a signal manner and are arranged between the hydraulic device and an oil inlet of the buffering device.
3. The hydraulic rock drill buffering device simulation test device according to claim 2, wherein the second detection device comprises a second pressure sensor and a second flow sensor which are connected with the control device in a signal manner and are arranged between the hydraulic device and an oil inlet of the propulsion cylinder.
4. A hydraulic rock drill buffering means simulation test apparatus according to claim 3, wherein the control means comprises a computer and a data collector signally connected between the first, second and third detection means and the computer, the first detection means further comprises a first pressure analyser signally connected between the first pressure sensor and the data collector and a first flow analyser signally connected between the first flow sensor and the data collector, the second detection means further comprises a second pressure analyser signally connected between the second pressure sensor and the data collector and a second flow analyser signally connected between the second flow sensor and the data collector.
5. A hydraulic rock drill buffering means simulation test apparatus according to claim 2, characterized in that the third detection means comprises a velocimeter in signal connection with the control means and a first speed detector in signal connection with the velocimeter for detecting the speed of the impact piston when striking the drill rod and a second speed detector for detecting the speed of the buffering piston.
6. A hydraulic rock drill buffering device simulation test apparatus according to claim 1, wherein the mounting means comprises a chuck for mounting an impact piston and a cross bar connected between the height adjusting means and the chuck, the chuck being located directly above the drill rod.
7. The hydraulic rock drill buffer device simulation test device according to claim 1, further comprising a bushing which surrounds the buffer piston, is arranged between the buffer piston and the cylinder and is fixed relative to the cylinder, wherein an oil inlet channel communicated with an oil inlet of the buffer device and an oil return channel connected with an oil return port of the buffer device are arranged on the bushing; when the drill rod is positioned at the drilling preparation position, a first cavity and a second cavity are formed between the buffer piston and the bushing, every two parts of the second cavity, the first cavity and the oil return channel are separated, and the second cavity is communicated with the oil inlet channel; after the drill rod is hit by the impact piston and the buffer piston moves downwards in the height direction, the second cavity is communicated with the first cavity, the oil inlet channel and the oil return channel in pairs.
8. The hydraulic rock drill buffer simulation test device according to claim 7, further comprising a spacer sleeve, hollow end covers and stop rings respectively positioned at two ends of the cylinder body, wherein the buffer piston extends out of the end covers and is in sliding sealing connection with the end covers, the drill rod comprises a rod body extending out of the end covers and drill bits connected with the rod body and positioned at two sides of the stop rings, the drill bits are used for drilling the object to be drilled, the rod body and the drill bits of the drill rod are limited at two sides of the stop rings along the axial direction by the stop rings, the drill rod further comprises splines arranged on the rod body, the buffer piston comprises skirt-shaped ends, the spacer sleeve is arranged around the drill rod and is positioned in a cavity of the skirt-shaped ends, and two axial ends of the spacer sleeve are respectively contacted with the splines and step surfaces of the skirt-shaped ends.
9. The hydraulic rock drill cushioning device simulation test apparatus of claim 8 wherein the stop ring includes two separable half rings.
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| CN202310816686.0A CN116558865B (en) | 2023-07-05 | 2023-07-05 | Hydraulic rock drill buffer device simulation test device |
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| CN202310816686.0A CN116558865B (en) | 2023-07-05 | 2023-07-05 | Hydraulic rock drill buffer device simulation test device |
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| CN116558865B true CN116558865B (en) | 2023-09-22 |
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| CN115356142A (en) * | 2022-10-21 | 2022-11-18 | 北京科技大学 | System and method for detecting performance of hydraulic rock drill |
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| CN2100483U (en) * | 1990-10-31 | 1992-04-01 | 宜春风动工具厂 | Operating test bench for diesel drills |
| CN105275382A (en) * | 2015-10-23 | 2016-01-27 | 山河智能装备股份有限公司 | Hydraulic rock drill double-buffer device |
| CN108367419A (en) * | 2015-12-24 | 2018-08-03 | 古河凿岩机械有限公司 | Hydraulic impact device |
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