Rock drill supporting leg buffering structure with overload protection assembly

Abstract

The utility model belongs to the technical field of rock drill supporting leg buffering structures, and particularly relates to a rock drill supporting leg buffering structure with an overload protection assembly, which comprises a hydraulic cylinder, a rock drill supporting leg body is arranged on one side of the hydraulic cylinder, and the end of the rock drill supporting leg body is connected with a rock drill body. The hydraulic cylinder is rotationally connected to the surface of the rock drill supporting leg body, a pressure sensor and an electromagnetic valve are installed on the surface of the hydraulic cylinder, and the pressure sensor is connected with the electromagnetic valve. According to the utility model, the filter box made of the transparent material is arranged on the oil pipe of the hydraulic cylinder through the flange, so that an operator can clearly and intuitively observe the state of hydraulic oil by virtue of the transparent filter box. Due to the design, an operator can master the actual condition of the hydraulic oil in time, so that the hydraulic oil can be conveniently replaced at a proper time, the influence on normal use of the supporting leg buffer structure of the rock drill due to excessive impurities in the hydraulic oil is effectively avoided, and stable and efficient operation of the rock drill is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rock drill supporting leg buffer structure technical field, concretely relates to a rock drill supporting leg buffer structure with overload protection component. BACKGROUND

[0002] Rock drill supporting leg buffer structure is the key component of guaranteeing rock drill stable operation, and its design type is various and function is different, mainly includes mechanical buffer structure, single buffer chamber buffer structure and double buffer chamber buffer structure. In the working process of rock drill, the impact piston will carry out high frequency reciprocating motion to impact the drill tail, at this moment, the buffer structure needs to continuously absorb the rebound kinetic energy generated by the collision of piston and drill tail. Among them, the double buffer chamber structure realizes energy absorption through oil pressure change, thereby reducing the damage of vibration to the internal structure of rock drill. In addition, the structure can also prevent the impact wave reflected from the rock from transmitting back and forth in the drill rod, and after the impact piston hits the drill to break the rock, the drill is quickly pressed against the rock. Rock drill supporting leg buffer structure is usually installed on the supporting leg of rock drill, and the buffer function is realized through the circulation of hydraulic oil.

[0003] However, the current rock drill supporting leg buffer structure exposes some problems in actual use. Since the hydraulic oil continuously circulates in the pipeline during long-term use, some impurities will inevitably be mixed. However, the problem is that the flow of hydraulic oil in the pipeline is affected by the pipeline wall, and the operator cannot directly observe its state. Once the impurity content in the hydraulic oil is too high, these impurities are easy to cause wear or blockage to the hydraulic cylinder, thereby affecting the normal work of the hydraulic cylinder, ultimately damaging the overall performance of the rock drill, and shortening its service life. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a rock drill supporting leg buffer structure with overload protection component, which aims at solving the problem that the existing technology is mixed with some impurities due to the continuous circulation of hydraulic oil in the pipeline during long-term use. However, the problem is that the flow of hydraulic oil in the pipeline is affected by the pipeline wall, and the operator cannot directly observe its state. Once the impurity content in the hydraulic oil is too high, these impurities are easy to cause wear or blockage to the hydraulic cylinder, thereby affecting the normal work of the hydraulic cylinder, ultimately damaging the overall performance of the rock drill, and shortening its service life.

[0005] To achieve the above object, the utility model provides the following technical scheme: A rock drill support leg buffer structure with overload protection assembly, including hydraulic cylinder, one side of hydraulic cylinder is provided with rock drill support leg body, the end of rock drill support leg body is connected with rock drill body, hydraulic cylinder rotation is connected on the surface of rock drill support leg body, the surface of hydraulic cylinder is equipped with pressure sensor and electromagnetic valve, pressure sensor is connected with electromagnetic valve, the pipeline is connected between electromagnetic valve and hydraulic cylinder, the surface of pipeline is equipped with filter box, the inside of filter box is inserted with filter screen, the front end of filter box is provided with fixed plate, the inner wall of fixed plate is equipped with sliding slot, the inside of sliding slot is connected with sliding block, sliding block is connected with filter screen.

[0006] As the utility model a kind of rock drill support leg buffer structure with overload protection assembly preferably, the filter box is PVC transparent material, the filter screen is metal material.

[0007] As the utility model a kind of rock drill support leg buffer structure with overload protection assembly preferably, the filter screen is slidably detachably connected with fixed plate by sliding block and sliding slot.

[0008] As the utility model a kind of rock drill support leg buffer structure with overload protection assembly preferably, the filter screen is insertedly fixedly connected with filter box by fixed plate.

[0009] As the utility model a kind of rock drill support leg buffer structure with overload protection assembly preferably, the sidewall of filter box is connected with fixed block, the surface of fixed block is screw-threaded and connected with fixed bolt, the fixed bolt is screw-threaded and connected with the outer wall of fixed block and fixed plate.

[0010] As the utility model a kind of rock drill support leg buffer structure with overload protection assembly preferably, the other sidewall of filter box, away from fixed block, is connected with locking block, the inside of locking block is inserted with pull rod, the pull rod is sleeved with spring.

[0011] As the utility model a kind of rock drill support leg buffer structure with overload protection assembly preferably, the pull rod is elastically telescopic connected with locking block by spring, the pull rod is connected with the outer wall of locking block and fixed plate.

[0012] Compared with prior art, the utility model has the beneficial effects that:

[0013] A transparent filter box is installed on the hydraulic cylinder's oil pipe via a flange, allowing operators to clearly and intuitively observe the hydraulic oil's condition. This design enables operators to promptly grasp the actual hydraulic oil level, facilitating timely oil replacement and effectively preventing excessive impurities in the hydraulic oil from affecting the normal operation of the rock drill's outrigger buffer structure, thus ensuring the rock drill's stable and efficient operation.

[0014] Through the cooperation of the fixed plate, slide groove, and slider, combined with the action of fixing bolts, fixing blocks, locking blocks, tie rods, and springs, the filter screen can be easily installed and removed. As the hydraulic oil flows from the hydraulic cylinder into the filter box through the oil pipe, the filter screen effectively filters the hydraulic oil. Furthermore, when the filter screen becomes clogged due to long-term use, its easy installation and removal allow operators to quickly disassemble and replace it, ensuring the continuous effectiveness of the hydraulic oil filtration function, guaranteeing the stable operation of the rock drill's outrigger buffer structure, and reducing equipment failures and maintenance costs caused by excessive impurities in the hydraulic oil. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the connection structure of the rock drill's outrigger buffer structure according to this utility model;

[0017] Figure 2 This is a schematic diagram of the rock drill outrigger buffer structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter box of this utility model;

[0019] Figure 4 This is a top view of the cross-sectional structure of the filter box of this utility model;

[0020] Figure 5 This utility model Figure 4 A magnified structural diagram at point A in the diagram.

[0021] In the diagram: 1. Hydraulic cylinder; 2. Pipeline; 3. Pressure sensor; 4. Solenoid valve; 5. Rock drill support leg body; 6. Rock drill body; 7. Filter box; 8. Filter screen; 9. Fixing plate; 10. Slide groove; 11. Slider; 12. Fixing block; 13. Fixing bolt; 14. Locking block; 15. Tie rod; 16. Spring. Detailed Implementation

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides the following technical scheme: a rock drill support leg buffer structure with an overload protection assembly, comprising a hydraulic cylinder 1, one side of the hydraulic cylinder 1 is provided with a rock drill support leg body 5, the end of the rock drill support leg body 5 is connected with a rock drill body 6, the hydraulic cylinder 1 is rotationally connected on the surface of the rock drill support leg body 5, the surface of the hydraulic cylinder 1 is installed with a pressure sensor 3 and a solenoid valve 4, the pressure sensor 3 is connected with the solenoid valve 4, the solenoid valve 4 is connected with the pipeline 2 between the hydraulic cylinder 1, the surface of the pipeline 2 is installed with a filter box 7, the filter box 7 is inserted with a filter screen 8 in the inside, the front end of the filter box 7 is provided with a fixed plate 9, the inner wall of the fixed plate 9 is provided with a sliding groove 10, the sliding groove 10 is slidably connected with a sliding block 11 in the inside, the sliding block 11 is connected with the filter screen 8.

[0024] Specifically, the rock drill support leg buffer structure mainly comprises a hydraulic cylinder 1, a pipeline 2, a pressure sensor 3 and a solenoid valve 4. The hydraulic cylinder 1 is installed on the rock drill support leg body 5 to realize the activity function of the rock drill support leg body 5. When the rock drill support leg body 5 is adjusted to the required position by means of the hydraulic cylinder 1, the rock drill body 6 starts to work. During the working process, the rock drill body 6 will vibrate and cause impact on the rock drill support leg body 5. At this time, the piston in the hydraulic cylinder 1 will move correspondingly to push the hydraulic oil to flow in the hydraulic cylinder 1. During this process, the compression and flow resistance of the hydraulic oil can absorb and buffer the impact energy, effectively reducing the damage of vibration to the internal structure of the rock drill body 6.

[0025] The pressure sensor 3 and the solenoid valve 4 play an important role in the buffering process. When the hydraulic oil pressure exceeds the set threshold, the pressure sensor 3 will sense in time and transmit the signal to the solenoid valve 4, and the solenoid valve 4 automatically cuts off the hydraulic circuit, thereby protecting the buffer structure and the whole rock drill from being damaged and realizing the overload protection of the rock drill.

[0026] Preferably, the filter box 7 is made of PVC transparent material, and the filter screen 8 is made of metal material. The filter screen 8 is connected to the fixed plate 9 in a sliding dismounting manner through the sliding block 11 and the sliding groove 10. The filter screen 8 is connected to the filter box 7 in a plug-in fixed manner through the fixed plate 9. The sidewall of the filter box 7 is connected with a fixed block 12. The surface of the fixed block 12 is threadedly connected with a fixed bolt 13. The fixed bolt 13 is threadedly connected with the outer wall of the fixed plate 9 through the fixed block 12. The other sidewall of the filter box 7 away from the fixed block 12 is connected with a locking block 14. The locking block 14 is internally plugged with a pull rod 15. The pull rod 15 is sleeved with a spring 16. The pull rod 15 is connected to the outer wall of the fixed plate 9 through the locking block 14 in an elastic telescopic manner through the spring 16.

[0027] In specific use, the filter box 7 is made of PVC transparent material, which facilitates the operator to visually observe the internal condition. The filter screen 8 is made of metal material to ensure that it has sufficient strength and durability. The filter screen 8 is connected to the fixed plate 9 in a sliding dismounting manner through the cooperation of the sliding block 11 and the sliding groove 10. When the filter screen 8 is blocked, the operator can separate the filter screen 8 from the fixed plate 9 by dismounting the fixed plate 9, thereby facilitating the replacement of the filter screen 8.

[0028] In addition, when the filter screen 8 is connected to the fixed plate 9 and is plugged into the filter box 7 together, the filter screen 8 will not shake or shift because it is limited by the inner wall of the filter box 7. At the same time, a sealing ring is arranged at the connection between the filter screen 8 and the filter box 7, which effectively avoids the risk of hydraulic oil leakage and does not affect the compression and flow resistance of the hydraulic oil, thereby ensuring that the hydraulic oil can still normally absorb and buffer impact energy.

[0029] In terms of fixation, the fixed bolt 13 cooperates with the fixed block 12 to firmly fix the sidewall of the fixed plate 9. At the same time, the locking block 14, the pull rod 15 and the spring 16 also work together. The pull rod 15 can pass through the locking block 14 and be connected to the outer wall of the fixed plate 9, thereby further reinforcing the sidewall of the fixed plate 9. Such design ensures the fixation stability of the fixed plate 9 and also guarantees the stability of the installation of the filter screen 8.

[0030] Working principle: the operator first connects the filter screen 8 to the fixed plate 9 along the sliding groove 10 through the sliding block 11. Then, pull the pull rod 15 outward, and the pull rod 15 extrudes the spring 16 during the pulling process, so that the spring 16 shrinks, and the pull rod 15 gradually retracts into the inside of the locking block 14. Next, the operator inserts the fixed plate 9 together with the filter screen 8 into the inside of the filter box 7. After insertion, release the pull rod 15, which is automatically reset under the elastic force of the spring 16 and tightly connected with the fixed plate 9 through the locking block 14. Then, the operator removes the fixed bolt 13 and rotates it into the inside of the fixed block 12 and connects it with the fixed plate 9, thereby completing the installation of the filter screen 8. When the device is in use, the operator connects the filter box 7 to the pipeline 2 through the flange. Since the filter box 7 is made of transparent material, the operator can clearly and intuitively observe the state of the hydraulic oil. This design enables the operator to timely grasp the actual situation of the hydraulic oil, facilitating the replacement of the hydraulic oil at the appropriate time, effectively avoiding the impact of excessive impurities in the hydraulic oil on the normal use of the rock drill leg buffer structure, and thus ensuring the stable and efficient operation of the rock drill. At the same time, the filter screen 8 can effectively filter the hydraulic oil during the process of the hydraulic oil in the hydraulic cylinder 1 flowing into the filter box 7 through the oil pipe. At the same time, when the filter screen 8 is blocked due to long-term use, since it is easy to disassemble and replace, the operator can quickly disassemble and replace it, thereby ensuring the continuous and effective filtering function of the hydraulic oil, ensuring the stable operation of the rock drill leg buffer structure, and reducing equipment failures and maintenance costs caused by excessive impurities in the hydraulic oil.

[0031] It is worth noting that when the filter screen 8 is blocked, the operator does not need to disconnect the filter box 7 from the pipeline 2. Only by rotating the fixed bolt 13 out of the connection with the fixed plate 9 and then pulling the pull rod 15 to separate it from the fixed plate 9, the fixed plate 9 can be removed. After the fixed plate 9 is removed, it will drive the filter screen 8 to move out of the inside of the filter box 7. At this time, the operator can use the cooperation of the sliding groove 10 and the sliding block 11 to slide the fixed plate 9 and the old filter screen 8 apart and replace the new filter screen 8. Finally, connecting the fixed plate 9 with the filter box 7 again can complete the replacement of the filter screen 8.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements of some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rock drill boom damping structure with an overload protection assembly, comprising a hydraulic cylinder (1), characterized in that: One side of the hydraulic cylinder (1) is provided with a rock drill leg body (5), the end of the rock drill leg body (5) is connected with a rock drill body (6), the hydraulic cylinder (1) is rotatably connected on the surface of the rock drill leg body (5); The surface of the hydraulic cylinder (1) is mounted with a pressure sensor (3) and a solenoid valve (4), the pressure sensor (3) is connected with the solenoid valve (4), the solenoid valve (4) and the hydraulic cylinder (1) are connected with a pipeline (2), the surface of the pipeline (2) is mounted with a filter box (7), the inside of the filter box (7) is inserted with a filter screen (8), the front end of the filter box (7) is provided with a fixed plate (9), the inner wall of the fixed plate (9) is provided with a sliding groove (10), the inside of the sliding groove (10) is slidably connected with a sliding block (11), the sliding block (11) is connected with the filter screen (8).

2. A jumbo leg bumper structure having an overload protection assembly according to claim 1, characterised in that: The filter box (7) is made of PVC transparent material, and the filter screen (8) is made of metal material.

3. A jumbo leg bumper assembly having an overload protection assembly according to claim 1, characterised in that: The filter screen (8) is slidably connected with the fixed plate (9) through the sliding block (11) and the sliding groove (10).

4. A jumbo leg bumper assembly having an overload protection assembly according to claim 1, characterised in that: The filter screen (8) is fixedly connected with the filter box (7) through the fixed plate (9).

5. A jumbo leg bumper assembly having an overload protection assembly according to claim 1, characterised in that: The side wall of the filter box (7) is connected with a fixed block (12), the surface of the fixed block (12) is threadedly connected with a fixed bolt (13), and the fixed bolt (13) is threadedly connected with the outer wall of the fixed plate (9) through the fixed block (12).

6. A jumbo leg bumper assembly having an overload protection assembly according to claim 1, characterised in that: The other side wall of the filter box (7) away from the fixed block (12) is connected with a locking block (14), the inside of the locking block (14) is inserted with a pull rod (15), and the pull rod (15) is sleeved with a spring (16).

7. A jumbo leg bumper assembly having an overload protection assembly according to claim 6, characterised in that: The pull rod (15) is elastically connected with the locking block (14) through the spring (16), and the pull rod (15) is connected with the outer wall of the fixed plate (9) through the locking block (14).

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