A hydraulic rock drill impact performance testing device

Abstract

The present invention discloses a hydraulic rock drill impact performance test device and method, comprising a first mounting plate, a rock drill body and a multi-way valve group, wherein a supporting movable guide rail is symmetrically mounted on the inner side of the first mounting plate, a fixed bracket is mounted on the top of the first mounting plate through the supporting movable guide rail, a drill rod is mounted on the output end of the rock drill body, a second mounting plate is mounted on the front of the first mounting plate, a hydraulic pump is mounted on the top of the second mounting plate, a connecting pipe is mounted on the output end of the hydraulic pump, a multi-way valve group is mounted on the output end of the hydraulic pump through the connecting pipe, an oil inlet circuit is mounted on one side of the multi-way valve group, a flow meter and a pressure gauge are installed through the top of the oil inlet circuit, a third mounting plate is mounted on one side of the first mounting plate, and a test computer is mounted on the top of the third mounting plate. The hydraulic control system of the present invention has a simple and reliable principle, and simple pressure and flow regulation.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical performance testing of rock drills, in particular to an impact performance testing device for hydraulic rock drills. Background Art

[0002] The impact performance test of a hydraulic rock drill is mainly composed of a rock drill hydraulic system and a vibration measuring device system. The hydraulic system of the rock drill is mainly controlled by a multi-way valve group, and a motor is used to drive a hydraulic pump to provide power to the hydraulic cylinder of the rock drill, so that the piston of the rock drill impacts the drill rod of the rock drill. When the drill rod of the rock drill impacts the steel plate, its vibration is induced; the vibration measuring device system is mainly a laser vibrometer, which is composed of a reflective label, a Doppler vibration sensor, a fixed bracket, a data acquisition box and a test computer. A hydraulic rock drill impact performance test device can test the velocity value of the drill rod impact, and the impact energy value of the rock drill can be calculated after data processing. The device is simple to operate, and the test experiment is safe and the experimental data reliability is strong.

[0003] The defects of the existing hydraulic rock drill impact performance testing device are:

[0004] 1. The traditional hydraulic rock drill impact performance test device is not convenient for adjusting the pressure and flow. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic rock drill impact performance testing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a hydraulic rock drill impact performance test device, comprising a first mounting plate, a rock drill body and a multi-way valve group, wherein a supporting movable guide rail is symmetrically mounted on the inner side of the first mounting plate, a fixed bracket is mounted on the top of the first mounting plate through the supporting movable guide rail, a drill rod is mounted on the output end of the rock drill body, a second mounting plate is mounted on the front of the first mounting plate, a hydraulic pump is mounted on the top of the second mounting plate, a connecting pipe is mounted on the output end of the hydraulic pump, and a multi-way valve group is mounted on the output end of the hydraulic pump through the connecting pipe;

[0007] An oil inlet circuit is installed on one side of the multi-way valve group, and a flow meter is installed through the top of the oil inlet circuit;

[0008] A third mounting plate is installed on one side of the first mounting plate, a test computer is installed on the top of the third mounting plate, and a support rod is installed on the top of the third mounting plate.

[0009] Preferably, a fixing plate body is symmetrically mounted on the outer side of the first mounting plate, a hydraulic cylinder is mounted on the inner wall of one side of the first mounting plate, a hydraulic rod is mounted on the output end of the hydraulic cylinder, and one end of the hydraulic rod is connected to one side of the fixing bracket.

[0010] Preferably, a cylindrical steel cylinder is symmetrically installed at the bottom of the fixed bracket, and the outer side of the cylindrical steel cylinder is embedded with the inner side of the supporting movable guide rail, a steel plate is installed on the top of the fixed bracket, a rock drill fixing plate is installed on the top of the steel plate, and the top of the rock drill fixing plate is connected to the rock drill body.

[0011] Preferably, a fan-shaped reflective plate is installed on the top of the drill rod, and a reflective label is installed on one side of the fan-shaped reflective plate.

[0012] Preferably, an oil tank is installed on the top of the second mounting plate, and the oil tank is located in front of the hydraulic pump, the oil outlet of the oil tank is connected to the oil inlet end of the hydraulic pump, and a motor is installed on the top of the second mounting plate, and the output end of the motor is connected to the driving end of the hydraulic pump.

[0013] Preferably, one side of the multi-way valve group is installed on the oil return circuit, and the oil return circuit is located behind the oil inlet circuit, a pressure gauge is installed on the top of the oil inlet circuit, and the pressure gauge is located on one side of the flow meter, and the oil inlet circuit and the oil return circuit are respectively connected to the piston chamber and the rotary motor of the rock drill body.

[0014] Preferably, the top of the third mounting plate is mounted on a data acquisition box, and the data acquisition box is located in front of the test computer.

[0015] Preferably, a connecting line is installed on one side of the test computer, and one end of the connecting line is connected to the data acquisition box.

[0016] Preferably, a mounting frame is installed at the top end of the support rod, and a Doppler vibration sensor is installed inside the mounting frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The hydraulic control system of the present invention has a simple and reliable principle, strong operability, simple pressure and flow regulation, and the pressure and flow are regulated by an overflow valve and a speed regulating valve, so the device has high reliability.

[0019] In the present invention, the maximum impact velocity of the rock drill under rated working pressure and flow rate is measured, and the energy of the impact performance of the rock drill can be calculated through relevant data processing.

[0020] 3. All the equipment in the vibration measuring device system of the present invention is easy to operate and data collection is reliable. The velocity value of the impact performance can be directly calculated through signal processing, which reduces the human error in data processing and makes the data more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a first mounting plate of the present invention;

[0023] Figure 3 It is a schematic diagram of the fixing bracket structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the fan-shaped reflector of the present invention;

[0025] Figure 5 It is a schematic structural diagram of a second mounting plate of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the multi-way valve group of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the test computer of the present invention;

[0028] Figure 8 It is a schematic diagram of the support rod structure of the present invention.

[0029] In the figure: 1. first mounting plate; 101. fixed plate body; 102. hydraulic cylinder; 103. hydraulic rod; 104. supporting movable guide rail; 2. fixed bracket; 201. cylindrical steel cylinder; 202. steel plate; 203. rock drill fixed plate; 3. rock drill body; 301. drill rod; 302. fan-shaped reflective plate; 303. reflective label; 4. second mounting plate; 401. oil tank; 402. motor; 403. hydraulic pump; 404. connecting pipe; 5. multi-way valve group; 501. oil inlet circuit; 502. flow meter; 503. pressure gauge; 504. oil return circuit; 6. third mounting plate; 601. data acquisition box; 7. test computer; 701. connecting line; 8. support rod; 801. mounting frame; 802. Doppler vibration sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figure 1-4 , an embodiment provided by the present invention: a hydraulic rock drill impact performance testing device;

[0034] Embodiment 1 includes a first mounting plate 1, a fixed bracket 2, a rock drill body 3 and a second mounting plate 4, a rock drill body 3 and a multi-way valve group 5. A support movable guide rail 104 is symmetrically installed on the inner side of the first mounting plate 1, and a fixed plate body 101 is symmetrically installed on the outer side of the first mounting plate 1. A hydraulic cylinder 102 is installed on the inner wall of one side of the first mounting plate 1, and a hydraulic rod 103 is installed at the output end of the hydraulic cylinder 102, and one end of the hydraulic rod 103 is connected to one side of the fixed bracket 2. The first mounting plate 1 plays a supporting role, which is used to support the weight of the top, and the fixed plate body 101 plays a fixing role, which is used to fix the first mounting plate 1. The hydraulic cylinder 102 can convert hydraulic energy into kinetic energy to drive the hydraulic rod 103 to move The hydraulic rod 103 can move the fixed bracket 2 by moving, and the support movable guide rail 104 provides space for the sliding of the cylindrical steel cylinder 201. The top of the first mounting plate 1 is installed with the fixed bracket 2 through the support movable guide rail 104. The bottom of the fixed bracket 2 is symmetrically installed with the cylindrical steel cylinder 201, and the outer side of the cylindrical steel cylinder 201 is embedded with the inner side of the support movable guide rail 104. The top of the fixed bracket 2 is installed with a steel plate 202, and the top of the steel plate 202 is installed with a rock drill fixing plate 203, and the top of the rock drill fixing plate 203 is connected to the rock drill body 3. The fixed bracket 2 provides an installation position for the cylindrical steel cylinder 201 so that it can be installed. The cylindrical steel cylinder 201 plays a guiding role for the movement of the fixed bracket 2 Provide function, a steel plate 202 is welded below the rock drill fixing plate 203, and the steel plate 202 is fixed on the fixing bracket 2. The fixing bracket 2 has two rock drill fixing supports and two cylindrical steel cylinders 201, which are used to cooperate with the supporting movable guide rail 104 on the first mounting plate 1 to facilitate the position movement of the rock drill body 3. A drill rod 301 is installed at the output end of the rock drill body 3, and a fan-shaped reflective plate 302 is installed on the top of the drill rod 301. A reflective label 303 is installed on one side of the fan-shaped reflective plate 302. After the rock drill body 3 obtains hydraulic power, the piston inside the rock drill body 3 impacts the object to be measured, inducing the vibration of the rock drill rod 301, so that it generates an impact signal, and the fan-shaped reflective plate 302 provides an installation position for the reflective label 303, so that the reflective The label 303 can be installed, and the reflective label 303 is used to provide a detection position for the Doppler vibration sensor 802. The second mounting plate 4 is installed on the front of the first mounting plate 1, and the hydraulic pump 403 is installed on the top of the second mounting plate 4. The output end of the hydraulic pump 403 is installed with a connecting pipe 404. The top of the second mounting plate 4 is installed with an oil tank 401, and the oil tank 401 is located in front of the hydraulic pump 403. The oil outlet of the oil tank 401 is connected to the oil inlet end of the hydraulic pump 403. The top of the second mounting plate 4 is installed with a motor 402, and the output end of the motor 402 is connected to the driving end of the hydraulic pump 403. The second mounting plate 4 provides an installation position for the hydraulic mechanism on the top. The motor 402 can convert electrical energy into kinetic energy after being powered on.The hydraulic pump 403 can be driven to provide power for the hydraulic cylinder 102 of the rock drill body 3, so that the piston of the rock drill body 3 impacts the drill rod 301 of the rock drill body 3. When the rock drill rod 301 impacts the object to be measured, the drill rod 301 on the rock drill body 3 is induced to vibrate. The oil tank 401 is used to store hydraulic oil and provide a storage location for it. The connecting pipe 404 plays a connecting role, and the hydraulic oil can enter the multi-way valve group 5. The output end of the hydraulic pump 403 is installed with the multi-way valve group 5 through the connecting pipe 404.

[0035] See also Figure 6 , an embodiment provided by the present invention: a hydraulic rock drill impact performance testing device;

[0036] Embodiment 2 includes a multi-way valve group 5, an oil inlet circuit 501 is installed on one side of the multi-way valve group 5, a flow meter 502 is installed on the top of the oil inlet circuit 501, one side of the multi-way valve group 5 is installed on the oil return circuit 504, and the oil return circuit 504 is located behind the oil inlet circuit 501, a pressure gauge 503 is installed on the top of the oil inlet circuit 501, and the pressure gauge 503 is located on one side of the flow meter 502, and the oil inlet circuit 501 and the oil return circuit 504 are respectively connected to the piston of the rock drill body 3. The multi-way valve group 5 is connected to the rotary motor, and a plurality of hydraulic valves and relief valves are integrated. The control output end of the multi-way valve group 5 is connected to the hydraulic cylinder 102 and the rock drill body 3. The oil inlet circuit 501 and the oil return circuit 504 of the rotary motor and the piston chamber inside the rock drill body 3 are respectively connected in series with a pressure gauge 503. The oil inlet circuit 501 and the oil return circuit 504 of the rotary motor and the piston chamber of the rock drill body 3 are also connected in series with a flow meter 502 for measuring the pressure and flow values ​​in the circuit.

[0037] See also Figure 5 , Figure 7 and Figure 8 , an embodiment provided by the present invention: a hydraulic rock drill impact performance testing device;

[0038] Embodiment 3 includes a third mounting plate 6, a test computer 7 and a support rod 8. The third mounting plate 6 is installed on one side of the first mounting plate 1. The top of the third mounting plate 6 is installed on the data acquisition box 601, and the data acquisition box 601 is located in front of the test computer 7. The data acquisition box 601 can process relevant data signals by connecting with the test computer 7. The third mounting plate 6 provides an installation position for the test computer 7 and the support rod 8 at the top so that they can be installed. The test computer 7 is installed on the top of the third mounting plate 6. A connecting line 701 is installed on one side of the test computer 7, and one end of the connecting line 701 is connected to the data acquisition box 601. The test computer 7 plays a computing role, and the connecting line 701 plays a connecting role, so that the test computer 7 can be connected to the data acquisition box 601. A support rod 8 is installed on the top of the third mounting plate 6, and a mounting frame 801 is installed on the top of the support rod 8. A Doppler vibration sensor 802 is installed inside the mounting frame 801. The support rod 8 provides an installation position for the mounting frame 801 so that the mounting frame 801 can be installed. The mounting frame 801 provides an installation position for the Doppler vibration sensor 802, which is used to fix the Doppler vibration sensor 802. The light emitted by the Doppler vibration sensor 802 is aligned with the reflective label 303, which can play a vibration measurement role.

[0039] Working principle and method: The hydraulic control system of the rock drill is composed of the rock drill body 3, the hydraulic cylinder 102, the multi-way valve group 5, the motor 402, and the hydraulic pump 403. The hydraulic system of the rock drill uses the motor 402 to drive the hydraulic pump 403 to provide hydraulic power, and the multi-way valve group 5 controls the operation of the hydraulic cylinder 102 and the rock drill. The hydraulic cylinder 102 moves the rock drill body 3 to the working position. After the rock drill body 3 obtains the hydraulic power, the piston inside the rock drill body 3 impacts the object to be measured, inducing the rock drill to drill. The vibration of the rod 301 generates an impact signal. The vibration measuring device system is composed of a reflective label 303, a Doppler vibration sensor 802, a data acquisition box 601 and a test computer 7. First, the reflective label 303 is pasted on the drill rod 301, and the Doppler vibration sensor 802 is fixed and connected to the data acquisition box 601 to achieve normal signal transmission. The data acquisition box 601 is connected to the test computer 7 to process the relevant data signals and transmit the Doppler vibration sensor 802 to the test computer 7. The light is aligned with the reflective label 303. Before the experiment, the mass of the piston of the rock drill body 3 is measured first, and the fan-shaped reflector 302 is vertically fixed on the drill rod 301, 100mm to 300mm away from the end of the drill tail; the laser beam is adjusted to directly hit the fan-shaped reflector 302, and it is ensured that the signal power received by the vibration meter is greater than 50% of the transmitted signal, and the hydraulic control system of the rock drill body 3 is driven to make it work normally. The drill rod 301 of the rock drill body 3 can realize the impact movement. When the rock drill rod 301 impacts the impact object, the vibration measuring device system works synchronously to measure the signal information when impacting the impact object. After the test computer 7 performs data output, the speed at the time of impact is obtained, and the maximum impact speed of the piston of the rock drill body 3 under the rated working pressure and flow rate is respectively determined. The test is repeated 5 times, and the arithmetic mean of the maximum impact speed is taken. Finally, data processing is performed, and the impact energy of the rock drill body 3 is calculated according to the formula. After data processing, the important parameters of the impact energy and impact performance of the hydraulic rock drill body 3 can be calculated.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A hydraulic rock drill impact performance testing device, comprising a first mounting plate (1), a rock drill body (3) and a multi-way valve group (5), characterized in that: A supporting movable guide rail (104) is symmetrically mounted on the inner side of the first mounting plate (1); a fixed bracket (2) is mounted on the top of the first mounting plate (1) via the supporting movable guide rail (104); a drill rod (301) is mounted on the output end of the rock drill body (3); a second mounting plate (4) is mounted on the front of the first mounting plate (1); a hydraulic pump (403) is mounted on the top of the second mounting plate (4); a connecting pipe (404) is mounted on the output end of the hydraulic pump (403); and a multi-way valve group (5) is mounted on the output end of the hydraulic pump (403) via the connecting pipe (404); An oil inlet circuit (501) is installed on one side of the multi-way valve assembly (5), and a flow meter (502) and a pressure gauge (503) are installed through the top of the oil inlet circuit (501); A third mounting plate (6) is mounted on one side of the first mounting plate (1), a test computer (7) is mounted on the top of the third mounting plate (6), and a support rod (8) is mounted on the top of the third mounting plate (6); A cylindrical steel cylinder (201) is symmetrically mounted on the bottom of the fixed bracket (2), and the outer side of the cylindrical steel cylinder (201) is engaged with the inner side of the supporting movable guide rail (104); a steel plate (202) is mounted on the top of the fixed bracket (2), a rock drill fixing plate (203) is mounted on the top of the steel plate (202), and the top of the rock drill fixing plate (203) is connected to the rock drill body (3); A fan-shaped reflective plate (302) is installed on the top of the drill rod (301), and a reflective label (303) is installed on one side of the fan-shaped reflective plate (302); One side of the multi-way valve group (5) is installed on the oil return circuit (504), and the oil return circuit (504) is located behind the oil inlet circuit (501). A pressure gauge (503) is installed on the top of the oil inlet circuit (501), and the pressure gauge (503) is located on one side of the flow meter (502). The oil inlet circuit (501) and the oil return circuit (504) are respectively connected to the piston chamber and the rotary motor of the rock drill body (3); A mounting frame (801) is mounted on the top end of the support rod (8), and a Doppler vibration sensor (802) is mounted inside the mounting frame (801).

2. A hydraulic rock drill impact performance testing device according to claim 1, characterized in that: A fixing plate body (101) is symmetrically mounted on the outer side of the first mounting plate (1), a hydraulic cylinder (102) is mounted on an inner wall of one side of the first mounting plate (1), a hydraulic rod (103) is mounted on the output end of the hydraulic cylinder (102), and one end of the hydraulic rod (103) is connected to one side of the fixing bracket (2).

3. A hydraulic rock drill impact performance testing device according to claim 1, characterized in that: An oil tank (401) is installed on the top of the second mounting plate (4), and the oil tank (401) is located in front of the hydraulic pump (403), the oil outlet of the oil tank (401) is connected to the oil inlet end of the hydraulic pump (403), and a motor (402) is installed on the top of the second mounting plate (4), and the output end of the motor (402) is connected to the drive end of the hydraulic pump (403).

4. A hydraulic rock drill impact performance testing device according to claim 1, characterized in that: The top of the third mounting plate (6) is mounted on a data acquisition box (601), and the data acquisition box (601) is located in front of the test computer (7).

5. A hydraulic rock drill impact performance testing device according to claim 1, characterized in that: A connecting line (701) is installed on one side of the test computer (7), and one end of the connecting line (701) is connected to the data acquisition box (601).

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