Impact test platform of rock drill oil cylinder

Abstract

An impact test platform for a rock drill oil cylinder effectively solves the problems that an existing test platform can only roughly evaluate the performance of a rock drill and cannot accurately obtain accurate parameter performance and the like. Comprising a supporting frame fixed to the horizontal plane, the supporting frame comprises a low-position frame and a high-position frame which are arranged front and back, the high-position frame is located on the rear side of the low-position frame, a sliding frame is arranged on the top of the low-position frame, a supporting plate sliding front and back is arranged on the sliding frame, and a thrust oil cylinder fixedly connected with the supporting plate is arranged in the sliding frame. A rock drill bit is fixed on the supporting plate; the testing device is ingenious in structure and convenient to use, through the arrangement of the double-rod oil cylinder, the back pressure valve, the impact cylinder sleeve, the containing groove and the like, when the testing rod is located in the containing groove, the thrust oil cylinder is started, the testing rod abuts against the impact cylinder sleeve to move towards one side, and the impact force borne by the thrust oil cylinder and the double-rod oil cylinder is observed and calculated. And obtaining performance parameters such as impact pressure, impact frequency and impact power of the rock drill.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drilling jumbo, in particular to an impact test platform for a rock drill oil cylinder. Background Art

[0002] A rock drilling jumbo (also known as a drilling jumbo) is a rock drilling equipment used in tunneling and underground engineering construction by the drill and blast method. The working mechanism mainly consists of a thruster, a drill boom, a slewing mechanism, and a translation mechanism. Rock drilling jumbos can be divided into heading jumbos for roadway driving, mining jumbos, bolt jumbos, and open-pit rock drilling jumbos, etc.; according to the traveling mechanism of the drill jumbo, they can be divided into rail-wheel, tire, and crawler types.

[0003] Chinese Patent with the application number CN202222275564.9 discloses a factory test platform for a rock drilling jumbo, which includes a test platform arranged in a workshop and a plurality of controllers arranged in a control room. The test platform includes a test device, a hydraulic system, and a cooling system. The test device includes a guiding plate, on which a plurality of guiding devices are evenly arranged. A plurality of slewing test assemblies are erected behind the guiding plate, and a plurality of impact test assemblies are erected behind the slewing test assemblies; the hydraulic system is used for supplying oil and returning oil to the slewing test assemblies and the impact test assemblies; the cooling system is used for cooling and temperature reduction of the impact test assemblies; the controller is used for collecting data and controlling actions. This test platform has complete factory commissioning and testing functions for the rock drilling jumbo, can be reused, can achieve product factory consistency, and can reduce the dependence on technical workers in the commissioning and testing links.

[0004] The existing test devices for rock drilling jumbos still have the following problems:

[0005] 1. Currently, the impact performance test of rock drills generally adopts the method of directly hitting rocks, and is measured by recording the drilling time. It can only roughly evaluate the performance of rock drills, cannot accurately obtain accurate parameter performance, is complex to operate, and at the same time cannot meet the test of rock drill equipment with different powers, and has poor practicability.

[0006] 2. The test platform is fixed with a large number of anchor bolts, and the anchor bolts are installed by embedding. It is necessary to determine the relevant dimensions of the test platform in advance. In actual assembly, there are also factors such as embedding errors, which make it very time-consuming and laborious for workers to install, and the versatility of the equipment is also low. Content of the Utility Model

[0007] In view of the above problems, the present invention provides an impact test platform for a rock drill oil cylinder, which has the advantages of being applicable to the impact force test of different rock drill bits, high equipment versatility, and more portable fixing of the support frame.

[0008] The technical solution it adopts is that the utility model includes a support frame fixed on a horizontal plane. The support frame includes a lower frame and an upper frame arranged front and rear. The upper frame is located at the rear side of the lower frame. A sliding frame is arranged at the top of the lower frame. A support plate that slides back and forth is arranged on the sliding frame. A propulsion oil cylinder fixedly connected to the support plate is arranged inside the sliding frame. A rock drill bit is fixed on the support plate.

[0009] A double-rod oil cylinder is fixed at the top of the upper frame. Two symmetrically distributed connecting pipes are arranged on the double-rod oil cylinder. The double-rod oil cylinder is externally connected to a back-pressure valve. The two connecting pipes are respectively connected to the back-pressure valve through pipelines. The front end of the double-rod oil cylinder is coaxially fixed with an impact cylinder sleeve. A placement groove is coaxially opened at the front end of the impact cylinder sleeve. The rock drill bit includes a test rod. The test rod is coaxially arranged with the impact cylinder sleeve and is located in the placement groove.

[0010] A plurality of anchor bolts are arranged on the horizontal plane. The bottom of the support frame is threadedly connected to the anchor bolts.

[0011] Preferably, a connecting frame fixed on the horizontal plane is arranged below the support frame. A rotating shaft is rotatably connected inside the connecting frame. A plurality of equally spaced adjustment cylinders are coaxially fixed on the rotating shaft. A plurality of positioning plates are threadedly connected to the adjustment cylinders. One end of the rotating shaft is coaxially fixed with a motor.

[0012] The rotating shaft is of a hollow structure. A plurality of electromagnetic units matching the adjustment cylinders are arranged inside the rotating shaft. The electromagnetic unit includes a powerful electromagnet coaxially arranged with the rotating shaft. An adsorption plate is arranged on one side of the powerful electromagnet. An annular oil bag is arranged between the powerful electromagnet and the adsorption plate. A plurality of circumferentially evenly distributed positioning holes are opened on the rotating shaft. A plurality of positioning grooves matching the positioning holes are opened on the inner walls of the plurality of adjustment cylinders. At least one positioning block that slides in the positioning holes and the positioning grooves is fixed on the oil bag. The plurality of powerful electromagnets are externally connected to a controller.

[0013] Preferably, a mounting plate is coaxially fixed inside the rotating shaft. The powerful electromagnet is coaxially fixed to the mounting plate. The two sides of the oil bag are respectively fixed to the mounting plate and the adsorption plate. A connecting ring is coaxially fixed inside the rotating shaft on the side of the adsorption plate. The adsorption plate is connected to the connecting ring through a spring.

[0014] Preferably, the thread directions of the adjustment cylinders below the lower frame and the adjustment cylinders below the upper frame are opposite.

[0015] Preferably, two left-right symmetric spring cylinders are respectively arranged on the plurality of positioning plates. A trigger button is coaxially arranged inside the spring cylinder. The trigger button is electrically connected to the powerful electromagnet. A pressing block is slidably connected inside the spring cylinder.

[0016] Preferably, the same pressing plate is fixed to two adjacent pressing blocks on the left and right.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. Through the settings of the double-rod oil cylinder, back-pressure valve, impact cylinder sleeve, and placement groove, etc., the worker only needs to fix the rock drill bit on the support plate, ensure that the test rod is coaxial with the placement groove during installation. When the test rod is located in the placement groove, start the propulsion oil cylinder, and the test rod pushes against the impact cylinder sleeve and moves to one side. By observing and calculating the impact forces received by the propulsion oil cylinder and the double-rod oil cylinder, performance parameters such as the impact pressure, impact frequency, and impact power of the rock drill can be obtained.

[0019] 2. Through the settings of the powerful electromagnet, oil bladder, adsorption plate, and positioning block, etc., when the powerful electromagnet is energized, the adsorption plate is attracted by the electromagnetic force and adsorbed on the powerful electromagnet. At this time, the oil bladder is squeezed and expanded, and the positioning block is inserted into the corresponding positioning groove. At this time, the adjusting cylinder and the rotating shaft rotate synchronously. The advantage of such a setting is that the movement of the positioning plate can be controlled for different types of support frame structures. When one of the positioning plates contacts the support frame, only need to control the corresponding electromagnetic unit to cut off the power. At this time, its corresponding adjusting cylinder and rotating shaft no longer rotate synchronously, and so on, until all the positioning plates are in contact with the support frame. Description of the Drawings

[0020] Figure 1 is the plan view of the present utility model.

[0021] Figure 2 is the top view of the present utility model.

[0022] Figure 3 is the schematic view of the back-pressure valve in the present utility model.

[0023] Figure 4 is the three-dimensional view of the present utility model.

[0024] Figure 5 is the schematic view of the connection frame and the connecting piece in the present utility model.

[0025] Figure 6 is the cross-sectional view of the electromagnetic unit in the present utility model.

[0026] Figure 7 is the three-dimensional cross-sectional view of the spring cylinder in the present utility model.

[0027] Explanation of the reference numerals in the schematic views:

[0028] 1. Support frame; 2. Low-position frame; 3. High-position frame; 4. Sliding frame; 5. Support plate; 6. Propulsion oil cylinder; 7. Rock drill bit; 8. Double-rod oil cylinder; 9. Back-pressure valve; 10. Impact cylinder sleeve; 11. Placing groove; 12. Test rod; 13. Anchor bolt; 14. Connection frame; 15. Rotating shaft; 16. Adjusting cylinder; 17. Positioning plate; 18. Motor; 19. Strong electromagnet; 20. Adsorption plate; 21. Oil bladder; 22. Positioning hole; 23. Positioning groove; 24. Positioning block; 25. Mounting plate; 26. Connection ring; 27. Spring cylinder; 28. Trigger button; 29. Extrusion block; 30. Extrusion plate. Detailed implementation mode

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Given by Figures 1 to 4 It includes a support frame 1 fixed on a horizontal plane. The support frame 1 includes a front and rear low-position frame 2 and a high-position frame 3. The high-position frame 3 is located at the rear of the low-position frame 2. The top of the low-position frame 2 is provided with a sliding frame 4. The sliding frame 4 is provided with a support plate 5 that slides back and forth. The sliding frame 4 is internally provided with a propulsion oil cylinder 6 fixedly connected to the support plate 5 to provide power for the movement of the support plate 5. The support plate 5 is fixedly provided with a rock drill bit 7, and the rock drill bit 7 is in a state to be tested;

[0031] Currently, the impact performance test of rock drills generally adopts the method of directly hitting the rock and calculates by recording the drilling time. This method can only roughly evaluate the performance of the rock drill, cannot accurately obtain accurate parameter performance, is complex to operate, and at the same time cannot meet the test of rock drill equipment with different powers, so its practicability is not strong. A double-rod oil cylinder 8 is fixed on the top of the high-position frame 3. There are two symmetrically distributed connecting pipes on the double-rod oil cylinder 8. The double-rod oil cylinder 8 is externally connected to a back-pressure valve 9. The two connecting pipes are respectively connected to the back-pressure valve 9 through pipelines. The front end of the double-rod oil cylinder 8 is coaxially fixed with an impact cylinder sleeve 10. A placement groove 11 is coaxially opened at the front end of the impact cylinder sleeve 10. The rock drill bit 7 includes a test rod 12. The test rod 12 is coaxially arranged with the impact cylinder sleeve 10 and is located in the placement groove 11. Through the settings of the double-rod oil cylinder 8, the back-pressure valve 9, the impact cylinder sleeve 10, the placement groove 11, etc., the worker only needs to fix the rock drill bit 7 on the support plate 5 and ensure that the test rod 12 is coaxial with the placement groove 11 during installation. When the test rod 12 is located in the placement groove 11, start the propulsion oil cylinder 6. The test rod 12 pushes against the impact cylinder sleeve 10 and moves to one side. By observing and calculating the impact forces received by the propulsion oil cylinder 6 and the double-rod oil cylinder 8, performance parameters such as the impact pressure, impact frequency, and impact power of the rock drill can be obtained;

[0032] Considering that the support frame 1 needs to bear a large lateral load and the stability of the support frame 1 needs to be ensured, a plurality of anchor bolts 13 are arranged on the horizontal plane. The bottom of the support frame 1 is threadedly connected to the anchor bolts 13.

[0033] Reference Figures 5 to 7 As shown, what needs to be further improved is that a large number of anchor bolts 13 are used to fix the test platform. The anchor bolts 13 are installed by embedding. The relevant dimensions of the test platform need to be determined in advance. In actual assembly, there are also factors such as embedding errors, which make it very time-consuming and laborious for workers during installation, and the versatility of the equipment is also low. A connecting frame 14 fixed on the horizontal plane is arranged below the support frame 1. A rotating shaft 15 is rotatably connected in the connecting frame 14. A plurality of equally spaced adjusting cylinders 16 are coaxially fixed on the rotating shaft 15. A plurality of positioning plates 17 are threadedly connected to the adjusting cylinders 16. A limiting groove is opened on the inner wall of the connecting frame 14. A limiting block matching the limiting groove is arranged on the positioning plate 17. One end of the rotating shaft 15 is coaxially fixed with a motor 18. Through the settings of the connecting frame 14, the rotating shaft 15, the positioning plate 17, and the motor 18, after the motor 18 is started, the rotating shaft 15 drives the adjusting cylinder 16 to rotate, and the positioning plate 17 slides back and forth on the adjusting cylinder 16. When the positioning plate 17 contacts the support frame 1, the motor 18 stops. A large number of anchor bolts 13 are discarded, but bolts fixedly connected to the horizontal plane are also arranged at the bottom of the support frame 1, which mainly bear all the vertical loads and part of the horizontal loads;

[0034] Considering that there may be deviations in the contact time of multiple positioning plates 17 with the support frame 1, especially for different structures of the support frame 1, to further supplement the movement mode of the positioning plate 17, the rotating shaft 15 is of a hollow structure, and a plurality of electromagnetic units matching the adjusting cylinder 16 are arranged inside the rotating shaft 15. The electromagnetic unit includes a powerful electromagnet 19 coaxially arranged with the rotating shaft 15. An adsorption plate 20 is arranged on one side of the powerful electromagnet 19. An annular oil bag 21 is arranged between the powerful electromagnet 19 and the adsorption plate 20. A plurality of circumferentially evenly distributed positioning holes 22 are formed in the rotating shaft 15. A plurality of positioning grooves 23 matching the positioning holes 22 are formed in the inner walls of the plurality of adjusting cylinders 16. At least one positioning block 24 sliding in the positioning holes 22 and the positioning grooves 23 is fixed on the oil bag 21. The plurality of powerful electromagnets 19 are externally connected to a controller. Through the settings of the powerful electromagnet 19, the oil bag 21, the adsorption plate 20 and the positioning block 24, when the powerful electromagnet 19 is energized, the adsorption plate 20 is attracted by the electromagnetic force and adsorbed on the powerful electromagnet 19. At this time, the oil bag 21 is squeezed and expanded, and the positioning block 24 is inserted into the corresponding positioning groove 23. At this time, the adjusting cylinder 16 and the rotating shaft 15 rotate synchronously. This is the usage mode when the powerful electromagnet 19 is energized for a long time. Further, it needs to be supplemented that the adsorption plate 20 can be replaced with a permanent magnet plate. When the powerful electromagnet 19 is energized, the adsorption plate 20 moves away from the powerful electromagnet 19. This is the usage mode when the powerful electromagnet 19 is energized for a short time. The advantage of such a setting is that the movement of the positioning plate 17 can be controlled for different types of support frame 1 structures. After one of the positioning plates 17 contacts the support frame 1, only the corresponding electromagnetic unit needs to be powered off. At this time, the corresponding adjusting cylinder 16 and the rotating shaft 15 no longer rotate synchronously, and so on until all the positioning plates 17 are in contact with the support frame 1.

[0035] Reference Figures 6 to 7 As shown, to further supplement the structure of the movement of the adsorption plate 20, a mounting plate 25 is coaxially fixed inside the rotating shaft 15. The powerful electromagnet 19 is coaxially fixed with the mounting plate 25. The two sides of the oil bag 21 are respectively fixed to the mounting plate 25 and the adsorption plate 20. A connecting ring 26 is coaxially fixed inside the rotating shaft 15 on one side of the adsorption plate 20. The adsorption plate 20 is connected to the connecting ring 26 through a spring. In this embodiment, the oil bag 21 is sleeved on the powerful electromagnet 19. When the adsorption plate 20 is adsorbed on the powerful electromagnet 19, the oil bag 21 is in a full and expanded state. When the powerful electromagnet 19 is powered off, the adsorption plate 20 resets under the action of the spring. At this time, the oil bag 21 is in a relaxed state, and the positioning block 24 is separated from the positioning groove 23.

[0036] Reference Figures 5 to 6As shown, considering that the impact force directions borne by the low-position frame 2 and the high-position frame 3 are different, the thread directions of the adjusting cylinders 16 below the low-position frame 2 and the adjusting cylinders 16 below the high-position frame 3 are opposite, and the moving directions of the positioning plates 17 below the low-position frame 2 and the high-position frame 3 are opposite.

[0037] Reference Figure 7 As shown, further supplementing the way of step-by-step controlling the electromagnetic unit is that two symmetric spring cylinders 27 are respectively arranged on each of the plurality of positioning plates 17. A trigger button 28 is coaxially arranged inside the spring cylinder 27. The trigger button 28 is electrically connected to the powerful electromagnet 19. A pressing block 29 is slidably connected inside the spring cylinder 27. When the pressing block 29 on the positioning plate 17 is pressed and contracts into the spring cylinder 27, after contracting to a certain extent, the trigger button 28 contacts the pressing block 29 and sends an electrical signal into the corresponding powerful electromagnet 19, and so on, until all the positioning plates 17 contact the support frame 1.

[0038] Reference Figure 7 As shown, further supplementing the structure of the pressing block 29 is that two adjacent pressing blocks 29 on the left and right are fixed to the same pressing plate 30. Only after both contact buttons on the same positioning plate 17 are triggered, the corresponding powerful electromagnet 19 will act.

[0039] When the present utility model is in use:

[0040] First, the worker only needs to fix the rock drill bit 7 on the support plate 5, and ensure that the test rod 12 is coaxial with the placement groove 11 during installation. When the test rod 12 is located in the placement groove 11;

[0041] Then, start the propulsion oil cylinder 6. The test rod 12 pushes against the impact cylinder sleeve 10 and moves to one side. By observing and calculating the impact forces borne by the propulsion oil cylinder 6 and the double-rod oil cylinder 8, performance parameters such as the impact pressure, impact frequency, and impact power of the rock drill are obtained;

[0042] Secondly, when fixing the support frame 1, connect the bottom of the support frame 1 to the horizontal plane through a plurality of bolts. Start the motor 18. The rotating shaft 15 drives the adjusting cylinder 16 to rotate. The positioning plate 17 slides back and forth on the adjusting cylinder 16. When the positioning plate 17 contacts the support frame 1, the motor 18 stops;

[0043] Finally, according to the structures of different support frames 1, the positioning plate 17 is controlled step by step. When the powerful electromagnet 19 is energized, the adsorption plate 20 is attracted by the electromagnetic force and adsorbed on the powerful electromagnet 19. At this time, the oil bag 21 is squeezed and expanded, and the positioning block 24 is inserted into the corresponding positioning groove 23. At this time, the adjusting cylinder 16 rotates synchronously with the rotating shaft 15. When the powerful electromagnet 19 is powered off, the adsorption plate 20 resets under the action of the spring. At this time, the oil bag 21 is in a relaxed state, and the positioning block 24 is disengaged from the positioning groove 23.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impact test platform for a rock drill cylinder, comprising a support frame (1) fixed on a horizontal plane, characterized in that: The support frame (1) comprises a low frame (2) and a high frame (3) arranged front and rear, the high frame (3) being located at the rear side of the low frame (2), a sliding frame (4) being arranged on the top of the low frame (2), a supporting plate (5) sliding back and forth being arranged on the sliding frame (4), a propulsion cylinder (6) fixedly connected to the supporting plate (5) being arranged in the sliding frame (4), and a rock drill bit (7) being fixed on the supporting plate (5); A double-rod oil cylinder (8) is fixed on the top of the high-position frame (3), and two symmetrically distributed connecting pipes are arranged on the double-rod oil cylinder (8). The double-rod oil cylinder (8) is externally connected to a back pressure valve (9), and the two connecting pipes are respectively connected to the back pressure valve (9) through pipelines. An impact cylinder sleeve (10) is coaxially fixed to the front end of the double-rod oil cylinder (8), and a placement groove (11) is coaxially opened at the front end of the impact cylinder sleeve (10). The rock drill bit (7) includes a test rod (12), and the test rod (12) is coaxially arranged with the impact cylinder sleeve (10) and is located in the placement groove (11); A plurality of anchor bolts (13) are arranged on the horizontal plane, and the bottom of the support frame (1) is threadedly connected to the anchor bolts (13).

2. The impact test platform for a rock drill cylinder according to claim 1, characterized in that: A connecting frame (14) fixed on a horizontal plane is arranged below the support frame (1), a rotating shaft (15) is rotatably connected inside the connecting frame (14), a plurality of equally spaced adjusting cylinders (16) are coaxially fixed on the rotating shaft (15), a plurality of positioning plates (17) are threadedly connected to the adjusting cylinder (16), and a motor (18) is coaxially fixed to one end of the rotating shaft (15); The rotating shaft (15) is a hollow structure. A plurality of electromagnetic units matching the adjusting cylinder (16) are arranged inside the rotating shaft (15). The electromagnetic units include a strong electromagnet (19) coaxially arranged with the rotating shaft (15). An adsorption plate (20) is arranged on one side of the strong electromagnet (19). An annular oil bag (21) is arranged between the strong electromagnet (19) and the adsorption plate (20). A plurality of circumferentially evenly distributed positioning holes (22) are provided on the rotating shaft (15). A plurality of positioning grooves (23) matching the positioning holes (22) are provided on the inner walls of the plurality of adjusting cylinders (16). At least one positioning block (24) sliding in the positioning hole (22) and the positioning groove (23) is fixed on the oil bag (21). The plurality of strong electromagnets (19) are externally connected to a controller.

3. The impact test platform for a rock drill cylinder according to claim 2, characterized in that: A mounting plate (25) is coaxially fixed inside the rotating shaft (15), the strong electromagnet (19) is coaxially fixed to the mounting plate (25), two sides of the oil bag (21) are respectively fixedly connected to the mounting plate (25) and the adsorption plate (20), a connecting ring (26) located on one side of the adsorption plate (20) is coaxially fixed inside the rotating shaft (15), and the adsorption plate (20) and the connecting ring (26) are connected via a spring.

4. The impact test platform for a rock drill cylinder according to claim 3, characterized in that: The screw thread direction of the adjusting cylinder (16) below the low-position frame (2) and the screw thread direction of the adjusting cylinder (16) below the high-position frame (3) are opposite.

5. The impact test platform for a rock drill cylinder according to claim 4, characterized in that: Two left-right symmetrical spring tubes (27) are respectively arranged on the plurality of positioning plates (17), a trigger button (28) is coaxially arranged inside the spring tube (27), the trigger button (28) is electrically connected to the strong electromagnet (19), and an extrusion block (29) is slidably connected inside the spring tube (27).

6. The impact test platform for a rock drill cylinder according to claim 5, characterized in that: The two adjacent extrusion blocks (29) on the left and right are fixed with the same extrusion plate (30).

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