An impact testing device for hydraulic rock drills

Abstract

The utility model relates to a kind of impact test device for hydraulic rock drill, it is related to hydraulic rock drill testing equipment technical field, including frame, the side surface of the frame is equipped with driving mechanism, and the movable part of driving mechanism is fixed with adjusting frame, the inboard of the frame is fixed with guide rod, adjusting frame is movably connected with guide rod, and adjusting frame is fixedly connected with guide rod by locking mechanism, the movable connection of adjusting frame has live rod, and one end of live rod is fixed with connecting block, spring is sleeved on the live rod, and spring is arranged between connecting block and adjusting frame, the side surface of the connecting block is fixed with impact lever, and impact lever is movably connected with frame, the impact test device for hydraulic rock drill, and the installation and disassembly of its impact head are simple and fast, different types of impact head are replaced according to test demand, by adjusting impact force and impact stroke, the impact state of hydraulic rock drill under different working conditions can be simulated, and test result is more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic rock drill testing equipment, and in particular to an impact testing device for hydraulic rock drills. Background Technology

[0002] Key components of a hydraulic rock drill, such as the piston, cylinder, and front sleeve, not only bear the impact load generated by the high-pressure oil driving them during operation, but also continuously endure the recoil load transmitted back from the rock through the drill rod. This high-frequency reciprocating impact is the main cause of material fatigue, cracking, and even failure. Before leaving the factory or after maintenance, the impact performance of hydraulic rock drills needs to be tested. Existing impact testing devices often suffer from problems such as inconvenient adjustment, inadequate impact force control, and cumbersome impact head replacement, resulting in low testing efficiency and insufficient reliability of test results. For example, some testing devices cannot flexibly adjust the impact stroke and impact force, making it difficult to simulate different working conditions; others have complex impact head fixing methods, making replacement inconvenient and affecting testing efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an impact testing device for hydraulic rock drills. The impact head is easy and quick to install and disassemble, and it is convenient to replace different types of impact heads according to the test requirements. By adjusting the impact force and impact stroke, it can simulate the impact state of hydraulic rock drills under different working conditions, and the test results are more accurate and reliable. It can effectively solve the problems in the background art.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution: An impact testing device for a hydraulic rock drill includes a frame, a drive mechanism mounted on the side of the frame, an adjusting frame fixed on the movable part of the drive mechanism, a guide rod fixed on the inner side of the frame, the adjusting frame being movably connected to the guide rod, and the adjusting frame being fixedly connected to the guide rod via a locking mechanism, a movable rod movably connected to the adjusting frame, a connecting block fixed to one end of the movable rod, a spring sleeved on the movable rod, the spring being disposed between the connecting block and the adjusting frame, an impact rod fixed to the side of the connecting block, the impact rod being movably connected to the frame, and an impact head connected to the end of the impact rod via a positioning unit.

[0005] Furthermore, it also includes a telescopic sleeve, which is connected and fixed between the frame and the adjustment frame.

[0006] Furthermore, the drive mechanism includes a lead screw, a nut, and a servo motor. The servo motor is mounted on the side of the frame, the lead screw is fixed on the output shaft of the servo motor, and the nut is fixed on the bottom of the adjustment frame and threadedly connected to the lead screw.

[0007] Furthermore, the locking mechanism includes bolts and bolt holes, with the bolt holes evenly spaced on the guide rod. The bolts are mounted on the side of the adjusting frame, and the bolts are threadedly connected to the bolt holes.

[0008] Furthermore, the positioning unit includes a positioning strip and a positioning groove. The positioning strip is fixed to the impact head, and the positioning groove is formed on the impact rod. The positioning strip and the positioning groove are inserted into each other.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This impact testing device for hydraulic rock drills has the following advantages: 1. It can control the position of the adjustment frame, thereby adjusting the pre-compression of the spring to control the impact force. The locking mechanism can further fix the adjustment frame to ensure stable position during the test.

[0010] 2. It adopts a positioning unit that connects the positioning strip and the positioning slot, which makes the installation and disassembly of the impact head simple and quick, and facilitates the replacement of different types of impact heads according to test requirements.

[0011] 3. The guide rod and telescopic sleeve ensure the smoothness and straightness of the adjustment frame movement, while protecting the internal mechanism and improving the service life and testing reliability of the device.

[0012] 4. By adjusting the impact force and impact stroke, the impact state of a hydraulic rock drill under different working conditions can be simulated, and the test results are more accurate and reliable. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 A magnified structural diagram at point A; Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 4 This utility model Figure 3 A magnified structural diagram at point B.

[0014] In the diagram: 1-Frame, 2-Telescopic sleeve, 3-Locking mechanism, 31-Bolt, 32-Bolt hole, 4-Drive mechanism, 41-Lead screw, 42-Nut, 43-Servo motor, 5-Positioning unit, 51-Positioning strip, 52-Positioning groove, 6-Impact rod, 7-Impact head, 8-Adjusting frame, 9-Guide rod, 10-Live rod, 11-Spring, 12-Connecting block. Detailed Implementation

[0015] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0016] Please see Figure 1-4 This embodiment provides a technical solution: an impact testing device for a hydraulic rock drill, including a frame 1, a drive mechanism 4 mounted on the side of the frame 1, an adjustment frame 8 fixed on the movable part of the drive mechanism 4, a guide rod 9 fixed on the inner side of the frame 1, the adjustment frame 8 being movably connected to the guide rod 9, and the adjustment frame 8 being fixedly connected to the guide rod 9 through a locking mechanism 3, a movable rod 10 being movably connected to the adjustment frame 8, a connecting block 12 being fixed to one end of the movable rod 10, a spring 11 being sleeved on the movable rod 10, the spring 11 being disposed between the connecting block 12 and the adjustment frame 8, an impact rod 6 being fixed to the side of the connecting block 12, the impact rod 6 being movably connected to the frame 1, and an impact head 7 being connected to the end of the impact rod 6 through a positioning unit 5.

[0017] It also includes a telescopic sleeve 2, which is connected and fixed between the frame 1 and the adjusting frame 8. When the adjusting frame 8 moves, the telescopic sleeve 2 extends and retracts accordingly, effectively protecting the internal drive mechanism and guide rods and other components, preventing the intrusion of foreign objects such as dust and chips, and extending the service life of the device.

[0018] The drive mechanism 4 includes a lead screw 41, a nut 42, and a servo motor 43. The servo motor 43 is mounted on the side of the frame 1. The lead screw 41 is fixed to the output shaft of the servo motor 43. The nut 42 is fixed to the bottom of the adjusting frame 8 and is threadedly connected to the lead screw 41. The hydraulic rock drill under test is fixed in a suitable position on the frame 1, aligning its impact part with the impact head 7. According to the test requirements, the servo motor 43 is started, driving the lead screw 41 to rotate. The lead screw 41 is threadedly driven to the adjusting frame 8, and the adjusting frame 8 moves along the guide rod 9, thereby changing the pre-compression of the spring 11 and adjusting the magnitude of the impact force. After adjustment, the adjusting frame 8 is locked by the locking mechanism 3. During the test, the impact force generated by the hydraulic rock drill is transmitted to the connecting block 12 through the impact head 7 and the impact rod 6. The connecting block 12 compresses the spring 11 and drives the movable rod 10 to move. By using data from relevant sensors on the hydraulic rock drill, parameters such as impact energy can be calculated, thus completing the test of the impact performance of the hydraulic rock drill. When replacing the impact head 7, it can be quickly disassembled and assembled using the positioning unit 5.

[0019] It can control the position of the adjustment frame 8, thereby adjusting the pre-compression of the spring 11 to control the impact force. The locking mechanism 3 can further fix the adjustment frame 8 to ensure the stability of the position during the test.

[0020] The positioning unit 5, which uses positioning strip 51 and positioning groove 52 for insertion, makes the installation and disassembly of the impact head 7 simple and quick, and facilitates the replacement of different types of impact heads 7 according to test requirements.

[0021] The guide rod 9 and the telescopic sleeve 2 ensure the smoothness and straightness of the movement of the adjustment frame 8, while protecting the internal mechanism and improving the service life and testing reliability of the device.

[0022] By adjusting the impact force and impact stroke, the impact state of a hydraulic rock drill under different working conditions can be simulated, resulting in more accurate and reliable test results.

[0023] The locking mechanism 3 includes bolts 31 and bolt holes 32. The bolt holes 32 are evenly distributed on the guide rod 9. The bolts 31 are mounted on the side of the adjusting frame 8. The bolts 31 are threadedly connected to the bolt holes 32. When the adjusting frame 8 moves to the target position, the bolts 31 are tightened so that their ends are inserted into the bolt holes 32 on the guide rod 9, which can securely lock the adjusting frame 8 and prevent displacement during the test.

[0024] The positioning unit 5 includes a positioning strip 51 and a positioning groove 52. The positioning strip 51 is fixed on the impact head 7, and the positioning groove 52 is formed on the impact rod 6. The positioning strip 51 and the positioning groove 52 are inserted into each other. During installation, the positioning strip 51 on the impact head 7 is aligned with the positioning groove 52 on the impact rod 6 and inserted. During disassembly, the impact head 7 is pulled out directly. This structure is not only easy to install and disassemble, but also ensures the coaxiality between the impact head 7 and the impact rod 6, making the impact force transmission more efficient and avoiding test errors or equipment damage caused by off-center loading.

[0025] The working principle of the impact testing device for a hydraulic rock drill provided by this utility model is as follows: The hydraulic rock drill to be tested is fixed in an appropriate position on the frame 1, aligning its impact part with the impact head 7. According to the test requirements, the servo motor 43 is started, driving the lead screw 41 to rotate. The lead screw 41 is threadedly driven with the adjusting frame 8, and the adjusting frame 8 moves along the guide rod 9, thereby changing the pre-compression of the spring 11 and adjusting the magnitude of the impact force. After adjustment, the adjusting frame 8 is locked by the locking mechanism 3. During the test, the impact force generated by the hydraulic rock drill is transmitted to the connecting block 12 through the impact head 7 and the impact rod 6. The connecting block 12 compresses the spring 11 and drives the movable rod 10 to move. By using the data from the relevant sensors on the hydraulic rock drill, parameters such as impact energy can be calculated, thus completing the test of the impact performance of the hydraulic rock drill. When replacing the impact head 7, it can be quickly disassembled and assembled using the positioning unit 5.

[0026] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0028] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. An impact testing device for a hydraulic rock drill, comprising a frame (1), characterized in that: A drive mechanism (4) is installed on the side of the frame (1). An adjustment frame (8) is fixed on the movable part of the drive mechanism (4). A guide rod (9) is fixed on the inner side of the frame (1). The adjustment frame (8) is movably connected to the guide rod (9). The adjustment frame (8) is fixedly connected to the guide rod (9) through a locking mechanism (3). A movable rod (10) is movably connected to the adjustment frame (8). A connecting block (12) is fixed at one end of the movable rod (10). A spring (11) is sleeved on the movable rod (10). The spring (11) is set between the connecting block (12) and the adjustment frame (8). An impact rod (6) is fixed on the side of the connecting block (12). The impact rod (6) is movably connected to the frame (1). An impact head (7) is connected to the end of the impact rod (6) through a positioning unit (5).

2. The impact testing device for a hydraulic rock drill according to claim 1, characterized in that: It also includes a telescopic sleeve (2), which is connected and fixed between the frame (1) and the adjustment frame (8).

3. The impact testing device for a hydraulic rock drill according to claim 1, characterized in that: The drive mechanism (4) includes a lead screw (41), a nut (42) and a servo motor (43). The servo motor (43) is mounted on the side of the frame (1). The lead screw (41) is fixed on the output shaft of the servo motor (43). The nut (42) is fixed on the bottom of the adjustment frame (8) and is threadedly connected to the lead screw (41).

4. The impact testing device for a hydraulic rock drill according to claim 1, characterized in that: The locking mechanism (3) includes a bolt (31) and a bolt hole (32). The bolt holes (32) are evenly distributed on the guide rod (9). The bolt (31) is mounted on the side of the adjusting frame (8). The bolt (31) is threadedly connected to the bolt hole (32).

5. The impact testing device for a hydraulic rock drill according to claim 1, characterized in that: The positioning unit (5) includes a positioning strip (51) and a positioning groove (52). The positioning strip (51) is fixed on the impact head (7), and the positioning groove (52) is opened on the impact rod (6). The positioning strip (51) and the positioning groove (52) are inserted into each other.

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