A test platform for hydraulic rock drill delivery test

Abstract

The utility model discloses a kind of test platforms for hydraulic rock drill delivery test machine, relate to construction equipment technical field, the test platform for hydraulic rock drill delivery test machine includes: shock-absorbing pedestal assembly, including base, hydraulic damping assembly, limit guide mechanism, base also includes fixed base plate and movable top plate, hydraulic damping assembly is connected with movable top plate, fixed base plate, limit guide mechanism is fixedly connected with fixed base plate and is passed through movable top plate;Deviation clamping component, including positioning assembly, pneumatic jacking assembly and centering deviation correction component, multiple positioning assemblies are symmetrically set along the centerline of movable top plate and are connected with pneumatic jacking assembly, and centering deviation correction component is set in the top surface center of movable top plate.The utility model is fixed in deviation clamping component by placing on shock-absorbing pedestal assembly again to hydraulic rock drill, effectively shock-absorbing is realized in the testing process of hydraulic rock drill, reduce the vibration to test data interference, increase equipment life, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and in particular to a test platform for factory testing of hydraulic rock drills. Background Technology

[0002] A hydraulic rock drill is a type of engineering machinery used for rock drilling, characterized by high-speed impact and high-torque rotation. Powered by high-pressure fluid, it outputs more energy than traditional pneumatic rock drills. During the production and use of hydraulic rock drills, performance testing is necessary. Currently, this is typically done by testing and adjusting the hydraulic rock drill on a test platform to simulate drilling conditions.

[0003] However, in existing hydraulic rock drills, the drilling process is typically simulated by bolting the drill to a test platform, which is also directly connected to the ground via bolts. This method causes the vibrations generated during the testing and debugging of the rock drill to act directly on the machine body, the test platform, and the mounting bolts. Long-term use can lead to displacement, deformation, or even breakage of various components.

[0004] Therefore, a test platform for hydraulic rock drills that can reduce the impact of vibration is needed. Utility Model Content

[0005] The main purpose of this utility model is to provide a test platform for factory testing of hydraulic rock drills, aiming to solve the problem that existing hydraulic rock drill test platforms are easily subject to vibration.

[0006] To achieve the above objectives, the present invention proposes a test platform for factory testing of hydraulic rock drills, comprising:

[0007] A shock-absorbing base assembly includes a base platform, a hydraulic damping component, and a limiting and guiding mechanism. The base platform further includes a fixed base plate and a movable top plate. The fixed base plate is fixedly disposed on the ground, and the movable top plate is movably connected to the fixed base plate. There are multiple hydraulic damping components, which are evenly distributed along the circumference of the fixed base plate. The top of each hydraulic damping component is rotatably connected to the movable top plate via a hinge joint. The limiting and guiding mechanism passes vertically through the movable top plate and is fixedly connected to the fixed base plate. The limiting and guiding mechanism is spaced apart from the hydraulic damping components.

[0008] The alignment clamping assembly includes a positioning assembly, a pneumatic clamping assembly, and a centering and alignment correction assembly. There are multiple positioning assemblies symmetrically arranged along the centerline of the movable top plate. The pneumatic clamping assembly is connected to the positioning assemblies and extends vertically upward. The centering and alignment correction assembly is located at the center of the top surface of the movable top plate.

[0009] Preferably, the base further includes a rotating mechanism, the bottom end of which is fixedly connected to the center of the top surface of the fixed substrate, and the top end of which is connected to the movable top plate. The movable top plate is movably connected to the fixed substrate through the rotating mechanism.

[0010] Preferably, the base further includes a plurality of damping pads, which are circumferentially spaced on the top surface of the fixed base plate around the rotating mechanism, and the top of the damping pads abuts against the movable top plate.

[0011] Preferably, the hydraulic damping assembly includes a piston rod, a damping control module, and a vibration sensor. The piston rod is fixedly disposed on the top surface of the fixed base plate and connected to the bottom surface of the movable top plate. The vibration sensor and the damping control module are both disposed on the bottom of the movable top plate, and the damping control module is signal-connected to the vibration sensor and the piston rod.

[0012] Preferably, the positioning component includes a positioning block, a slide rail, and a driving component. The slide rail is disposed on the top surface of the movable top plate and symmetrically arranged on both sides of the center line of the movable top plate. There are multiple positioning blocks. The driving component is disposed on one side of the positioning block. The positioning block is slidably connected to the slide rail through the driving component. Multiple pneumatic clamping components are correspondingly disposed on opposite sides of multiple positioning blocks.

[0013] Preferably, the pneumatic clamping assembly includes a lifting rod and a pneumatic gripper. The lifting rod is fixedly disposed on the positioning block on a side away from the centerline of the movable top plate, and the lifting rod extends vertically upward. The pneumatic gripper is disposed at the end of the lifting rod and faces the center of the movable top plate.

[0014] Preferably, the pneumatic clamping assembly further includes a pressure sensor and a PLC controller. The pressure sensor is disposed on the inner side of the pneumatic gripper and is signal-connected to the PLC controller. The PLC controller is disposed on the lifting rod on the side close to the pneumatic gripper.

[0015] Preferably, the centering and correction assembly includes a cross laser emitter and an image sensor. The cross laser emitter is disposed at the center of the top surface of the movable top plate. The positioning block is provided with a laser reflector corresponding to the cross laser emitter. The image sensor is disposed at the top of the cross laser emitter. Both the image sensor and the cross laser emitter are signal connected to the driving component.

[0016] This invention places a hydraulic rock drill in a positioning component within a correction and clamping assembly, and secures it in conjunction with a pneumatic clamping assembly. The pneumatic clamping assembly clamps and secures the hydraulic rock drill during testing, while the centering and correction assembly enables correction and resetting, ensuring testing accuracy. Furthermore, the shock-absorbing base assembly fixed to the ground and the movable top plate further mitigate vibrations, effectively reducing vibration interference with test data, increasing equipment lifespan, and improving testing efficiency during the testing of the hydraulic rock drill. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a test platform for factory testing of a hydraulic rock drill according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a test platform for factory testing of a hydraulic rock drill, according to another embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the ventilation baffle centering and correction assembly according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a pneumatic clamping assembly according to an embodiment of the present invention.

[0022] Explanation of icon numbers:

[0023] label name label name 1000 Test platform for factory testing of hydraulic rock drills 100 Vibration damping base assembly 110 abutment 111 Fixed base plate 112 Active roof 113 Rotating mechanism 114 Damping pad 120 Hydraulic damping components 121 Piston rod 122 Damping control module 123 Vibration sensor 130 Limiting and guiding mechanism 200 Correction clamping components 210 Positioning components 211 Positioning block 212 slide rail 213 Drive components 220 Pneumatic clamping assembly 221 lifting pole 222 pneumatic gripper 230 Centering and correction components 231 Cross laser emitter 232 Image sensor

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figures 1-4 As shown, this utility model proposes a test platform 1000 for factory testing of a hydraulic rock drill, comprising: a shock-absorbing base assembly 100, which includes a base 110, a hydraulic damping assembly 120, and a limiting and guiding mechanism 130. The base 110 further includes a fixed base plate 111 and a movable top plate 112. The fixed base plate 111 is fixedly mounted on the ground, and the movable top plate 112 is movably connected to the fixed base plate 111. Multiple hydraulic damping assemblies 120 are evenly distributed along the circumference of the fixed base plate 111, and the top ends of the hydraulic damping assemblies 120 are hinged to the movable top plate 112. The joint is rotatably connected, and the limiting guide mechanism 130 is vertically inserted through the movable top plate 112 and fixedly connected to the fixed base plate 111. The limiting guide mechanism 130 and the hydraulic damping component 120 are spaced apart. The correction clamping component 200 includes a positioning component 210, a pneumatic clamping component 220 and a centering correction component 230. There are multiple positioning components 210, which are symmetrically arranged along the centerline of the movable top plate 112. The pneumatic clamping component 220 is connected to the positioning component 210 and extends vertically upward. The centering correction component 230 is located at the center of the top surface of the movable top plate 112.

[0029] In this embodiment, the shock-absorbing base assembly 100 consists of a fixed base plate 111 and a movable top plate 112. The fixed base plate 111 is fixed to the ground by anchor bolts. The movable top plate 112 is connected to the fixed base plate 111 by four sets of hydraulic damping assemblies 120. The bottom ends of the four sets of hydraulic damping assemblies 120 are respectively welded to the four diagonal positions of the fixed base plate 111, and the top ends are connected to the movable top plate 112 by ball joints. The limiting guide mechanism 130 consists of four chrome-plated pillars with a diameter of 40mm, which vertically penetrate the movable top plate 112 and slide in contact with the self-lubricating copper sleeve. The bottom ends are welded to the fixed base plate 111.

[0030] Specifically, the operator places the hydraulic rock drill on the positioning component 210. The centering and correction component 230 automatically detects the axial deviation and adjusts the positioning component 210 to the predetermined position. Simultaneously, the pneumatic clamping component 220 is activated to clamp and fix the hydraulic rock drill around its perimeter. During the test, the clamping force is automatically adjusted to prevent overpressure damage to the equipment. After the hydraulic rock drill starts testing, it generates vibration. The hydraulic damper dynamically adjusts the damping force accordingly to absorb high-frequency vibrations and avoid stress concentration caused by rigid connections. After the test is completed, the pneumatic clamping component 220 automatically releases, and the positioning component 210 returns to its initial position, ready for the next cycle.

[0031] It is understood that in this utility model, the hydraulic damping component 120 and the limiting guide mechanism 130 work together to absorb the vibration of the rock drill, avoid the distortion of test data and the risk of equipment damage caused by long-term vibration. At the same time, the ball joint allows the movable top plate 112 to deflect at a small angle, eliminates local stress concentration caused by installation errors, and extends the equipment life.

[0032] In one embodiment, the base 110 further includes a rotating mechanism 113. The bottom end of the rotating mechanism 113 is fixedly connected to the center of the top surface of the fixed base plate 111, and the top end of the rotating mechanism 113 is connected to a movable top plate 112. The movable top plate 112 is movably connected to the fixed base plate 111 through the rotating mechanism 113.

[0033] In this embodiment, the rotating mechanism 113 adopts a slewing bearing. The outer ring is welded to the center of the top surface of the fixed base plate 111, and the inner ring is fixed to the movable top plate 112 by bolts. The slewing bearing allows the movable top plate 112 to rotate ±15° around the central axis. The rotation angle is monitored in real time by the encoder and displayed on the control panel.

[0034] Understandably, the movable top plate 112 can simulate downhole operating angles (such as inclined drilling conditions), test the performance of the rock drill in a non-horizontal state, and eliminate local stress concentrations caused by installation errors.

[0035] In one embodiment, the base 110 further includes a damping pad 114. There are multiple damping pads 114, which are circumferentially spaced on the top surface of the fixed base plate 111 around the rotation mechanism 113, and the top of the damping pad 114 abuts against the movable top plate 112.

[0036] In this embodiment, the damping pads 114 are made of high-damping rubber, and there are twelve damping pads 114 arranged in a circular matrix around the rotating mechanism 113 at uniform intervals, and fixedly connected to the movable top plate 112 and the fixed base plate 111. The compression of the rubber pads is controlled at 10%-15% to ensure that the attenuation rate is ≥70% under low-frequency vibration. The matrix of damping pads 114 absorbs the large-amplitude low-frequency vibration generated by the rock drill impact, complementing the high-frequency vibration suppression of the hydraulic damping component 120, further extending the equipment life.

[0037] In one embodiment, the hydraulic damping assembly includes a piston rod 121, a damping control module 122, and a vibration sensor 123. The piston rod 121 is fixedly disposed on the top surface of the fixed base plate 111 and connected to the bottom surface of the movable top plate 112. The vibration sensor 123 and the damping control module 122 are both disposed on the bottom of the movable top plate 112, and the damping control module 122 is signal-connected to the vibration sensor 123 and the piston rod 121.

[0038] In this embodiment, the bottom end of the piston rod 121 is fixed to the fixed base plate 111, and the top end is connected to the movable top plate 112 via a ball joint. The vibration sensor 123 is a piezoelectric accelerometer, installed at the four corners of the movable top plate 112. The vibration sensor 123 transmits the vibration signal to the damping control module 122 (PLC integrated PID algorithm), which adjusts the stroke of the piston rod 121 in real time. This allows the operator to dynamically adjust the damping according to the vibration frequency (e.g., increasing the damping force to 8kN for high-frequency vibrations above 50Hz), thus suppressing the energy of the hydraulic rock drill's vibration in specific frequency bands.

[0039] In one embodiment, the positioning component 210 includes a positioning block 211, a slide rail 212, and a drive member 213. The slide rail 212 is disposed on the top surface of the movable top plate 112 and symmetrically arranged on both sides of the center line of the movable top plate 112. There are multiple positioning blocks 211. The drive member 213 is disposed on one side of the positioning block 211. The positioning block 211 is slidably connected to the slide rail 212 through the drive member 213. Multiple pneumatic clamping components 220 are correspondingly disposed on opposite sides of the multiple positioning blocks 211.

[0040] In this embodiment, the driving component 213 is a ball screw driven by a servo motor. The screw nut is fixedly connected to the bottom of the positioning block 211. The slide rail 212 adopts a double-row ball linear guide rail, symmetrically arranged on both sides of the center line of the movable top plate 112. The positioning block 211 is connected to the guide rail through a slider, and the moving speed is adjustable from 0-100mm / s. The servo motor and the ball screw work together to realize the synchronous opposite movement of multiple positioning blocks 211, which can be used to adapt to rock drills of different diameters, facilitate the reset of the positioning blocks 211 in multiple test cycles, and reduce the operation difficulty for operators.

[0041] In one embodiment, the pneumatic clamping assembly 220 includes a lifting rod 221 and a pneumatic gripper 222. The lifting rod 221 is fixedly mounted on the positioning block 211 on the side away from the centerline of the movable top plate 112. The lifting rod 221 extends vertically upward, and the pneumatic gripper 222 is located at the end of the lifting rod 221 and faces the center of the movable top plate 112.

[0042] In this embodiment, the lifting rod 221 is a pneumatic telescopic column. The bottom of the lifting rod 221 is fixed to the outside of the positioning block 211 via a flange. A pneumatic gripper 222 is installed at the top of the lifting rod 221. The pneumatic gripper 222 is a parallel opening and closing type, and a polyurethane buffer layer is attached to the inner side of the gripper. The clamping surface of the pneumatic gripper 222 matches the contour of the rock drill shell. It can be understood that the operator can replace the pneumatic gripper 222 according to the actual shape of the hydraulic rock drill. Through the pneumatic lifting of the lifting rod 221, the height of the gripper can be quickly adjusted to adapt to the installation reference surface of different models of rock drills. At the same time, the polyurethane buffer layer reduces the contact stress of the clamping surface and avoids surface scratches on the hydraulic rock drill.

[0043] In one embodiment, the pneumatic clamping assembly 220 further includes a pressure sensor and a PLC controller. The pressure sensor is disposed inside the pneumatic gripper 222 and is signal-connected to the PLC controller. The PLC controller is disposed on the lifting rod 221 on the side close to the pneumatic gripper 222.

[0044] In this embodiment, the pressure sensor is a thin-film type and is embedded inside the pneumatic gripper 222. It is connected to a PLC controller installed on the side wall of the lifting rod 221 via a shielded cable. The PLC presets a clamping force threshold (e.g., 300±10N). When the sensor reports an over-limit, it adjusts the output power of the pneumatic gripper 222 to automatically alarm and stop the machine when the limit is exceeded, thereby improving testing safety and preventing deformation of the rock drill housing due to overpressure.

[0045] In one embodiment, the centering and correction component 230 includes a cross laser emitter 231 and an image sensor 232. The cross laser emitter 231 is disposed on the center positioning block 211 on the top surface of the movable top plate 112. A laser reflector is provided on the cross laser emitter 231. The image sensor 232 is disposed on the top of the cross laser emitter 231. Both the image sensor 232 and the cross laser emitter 231 are signal connected to the drive component 213.

[0046] In this embodiment, the cross laser emitter 231 is installed at the center of the movable top plate 112, and a laser reflector (including but not limited to a diffuse reflective aluminum plate) is welded to one side of the positioning block 211 corresponding to the cross laser emitter 231. The image sensor 232 is fixedly installed above the cross laser emitter 231, and calculates the offset between the center of the laser cross and the marked point on the reflector through an image processing algorithm. This drives the servo motor to adjust the position of the positioning block 211. Non-contact measurement avoids human error and reduces axis alignment error during repetition.

[0047] This invention places a hydraulic rock drill within a positioning component of a centering and clamping assembly, secured by a pneumatic clamping component. The pneumatic clamping component holds the hydraulic rock drill in place during testing, while the centering and centering component enables correction and resetting, ensuring testing accuracy. Furthermore, a shock-absorbing base assembly fixed to the ground and a movable top plate further mitigate vibrations. When the rock drill experiences lateral vibrations due to load eccentricity, this invention maintains its fixation through dynamic pressure adjustment, effectively mitigating vibrations during testing, reducing interference with test data, shortening installation and correction time, increasing equipment lifespan, and improving testing efficiency.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A test platform for hydraulic rock drill commissioning, characterized in that, include: A shock-absorbing base assembly includes a base platform, a hydraulic damping component, and a limiting and guiding mechanism. The base platform further includes a fixed base plate and a movable top plate. The fixed base plate is fixedly disposed on the ground, and the movable top plate is movably connected to the fixed base plate. There are multiple hydraulic damping components, which are evenly distributed along the circumference of the fixed base plate. The top of each hydraulic damping component is rotatably connected to the movable top plate via a hinge joint. The limiting and guiding mechanism passes vertically through the movable top plate and is fixedly connected to the fixed base plate. The limiting and guiding mechanism is spaced apart from the hydraulic damping components. The alignment clamping assembly includes a positioning assembly, a pneumatic clamping assembly, and a centering and alignment correction assembly. There are multiple positioning assemblies symmetrically arranged along the centerline of the movable top plate. The pneumatic clamping assembly is connected to the positioning assemblies and extends vertically upward. The centering and alignment correction assembly is located at the center of the top surface of the movable top plate.

2. A test platform for hydraulic rock drill commissioning test as claimed in claim 1, characterized in that, The base also includes a rotating mechanism, the bottom end of which is fixedly connected to the center of the top surface of the fixed base plate, and the top end of which is connected to the movable top plate. The movable top plate is movably connected to the fixed base plate through the rotating mechanism.

3. A test platform for hydraulic rock drill commissioning test as claimed in claim 2, characterized in that, The base also includes a plurality of damping pads, which are circumferentially spaced on the top surface of the fixed base plate around the rotating mechanism, and the top of the damping pads abuts against the movable top plate.

4. The test platform for hydraulic rock drill commissioning test as claimed in claim 3, characterized in that, The hydraulic damping assembly includes a piston rod, a damping control module, and a vibration sensor. The piston rod is fixedly mounted on the top surface of the fixed base plate and connected to the bottom surface of the movable top plate. The vibration sensor and the damping control module are both located at the bottom of the movable top plate, and the damping control module is signal-connected to the vibration sensor and the piston rod.

5. The test platform for hydraulic rock drill commissioning test as claimed in claim 1, wherein, The positioning component includes a positioning block, a slide rail, and a driving component. The slide rail is disposed on the top surface of the movable top plate and symmetrically arranged on both sides of the center line of the movable top plate. There are multiple positioning blocks. The driving component is disposed on one side of the positioning block. The positioning block is slidably connected to the slide rail through the driving component. Multiple pneumatic clamping components are correspondingly disposed on opposite sides of multiple positioning blocks.

6. A test platform for commissioning hydraulic rock drills according to claim 5, characterized in that, The pneumatic clamping assembly includes a lifting rod and a pneumatic gripper. The lifting rod is fixedly mounted on the positioning block on a side away from the centerline of the movable top plate, and the lifting rod extends vertically upward. The pneumatic gripper is located at the end of the lifting rod and faces the center of the movable top plate.

7. A test platform for hydraulic rock drill commissioning test as claimed in claim 6, characterized in that, The pneumatic clamping assembly also includes a pressure sensor and a PLC controller. The pressure sensor is located inside the pneumatic gripper and is connected to the PLC controller via a signal. The PLC controller is located on the lifting rod on the side close to the pneumatic gripper.

8. The test platform for hydraulic rock drill commissioning test as claimed in claim 5, characterized in that, The centering and correction assembly includes a cross laser emitter and an image sensor. The cross laser emitter is located at the center of the top surface of the movable top plate. The positioning block is provided with a laser reflector corresponding to the cross laser emitter. The image sensor is located at the top of the cross laser emitter. Both the image sensor and the cross laser emitter are signal connected to the driving component.

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