CN212657078U - Hydraulic system oil return device and drill jumbo - Google Patents
Hydraulic system oil return device and drill jumbo Download PDFInfo
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- CN212657078U CN212657078U CN202021092099.XU CN202021092099U CN212657078U CN 212657078 U CN212657078 U CN 212657078U CN 202021092099 U CN202021092099 U CN 202021092099U CN 212657078 U CN212657078 U CN 212657078U
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Abstract
The utility model discloses a hydraulic system oil returning device, close a stream block unit, second grade confluence block unit, always close flow tube unit, shunt tubes and frame unit including oil return hose, one-level. The oil return hose is communicated with an oil circuit of the first-stage confluence block, the first-stage confluence block is communicated with an oil circuit of the second-stage confluence block, the second-stage confluence block is communicated with an oil circuit at one end of the total confluence pipe, the shunt pipe is communicated with an oil circuit at the other end of the total confluence pipe, and the total confluence pipe is fixedly arranged on the frame unit. The structure simplifies the layout of the oil way and greatly reduces the backpressure of the hydraulic system.
Description
Technical Field
The utility model relates to a drill jumbo technical field, concretely relates to hydraulic system oil returning device and drill jumbo.
Background
At present, a rock drilling trolley is developing towards a high-power rock drill and a multi-arm frame direction so as to improve the construction efficiency of tunnels and mines and reduce the drilling time of a working face. This also makes the hydraulic system of the rock-drilling rig develop towards very large flows (flows > 1000L/min). If the single-arm flow of the three-arm rock drilling jumbo widely used in the field of tunnel construction at present reaches 362L/min, the total oil return flow reaches 1087L/min, so that the large working flow easily causes the excessive oil return back pressure, which generally reaches 30 bar. But the oil return back pressure of the rock drilling machine generally requires less than 12bar so as to meet the use requirement of the rock drilling machine. Therefore, in practical use, the oil return back pressure (30bar) of the existing ultra-large flow hydraulic system cannot meet the use requirement (12bar) of the rock drilling machine generally, and further the working efficiency of the rock drilling machine is reduced. Therefore, in order to solve the problem that the oil return backpressure of the ultra-large flow hydraulic system of the rock drilling jumbo is high, research on the device is always a hotspot and a difficulty in the industry.
An oil return device of a hydraulic system of an existing ultra-large-flow rock drilling jumbo is shown in figure 1, an arm return oil pipeline a1 is connected to an arm converging block a2 through the right side of a frame d, and then the arm return oil pipeline a3 returns to a radiator after converging. The second arm return pipe b1 is connected to the confluence block b2 through the middle of the frame d, and then after confluence, returns to the radiator through the second arm main return pipe b 3. c1, c2 and c3 are the same except that the pipeline passes through the left side of the frame. The prior art solution has at least the following two problems: firstly, too many pipelines influence pleasing to the eye. Because the oil return confluence block is arranged on the frame tailstock, oil return pipelines of three arms are required to be independently connected to the confluence block, the number of general single-arm oil return confluence pipes is 10, and the total oil return confluence pipelines are 30. In use, the pipelines are seriously crossed, and are difficult to arrange, so that the appearance is influenced. Secondly, the oil return back pressure is large, and the rock drilling efficiency is low. Because the single oil return pipeline extends from the front of the frame to the tail of the frame, the inner diameter of the pipeline of the single oil pipe cannot be too large considering the space size. Therefore, the return oil pressure loss is large, and the efficiency of the rock drill is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic system oil returning device carries out the optimal treatment to current hydraulic system, makes the pipeline more succinct, smooth and easy, greatly reduced system backpressure.
In order to achieve the purpose, the utility model discloses a hydraulic system oil return device, including oil return hose, one-level confluence block unit, second grade confluence block unit, total confluence pipe unit, shunt tubes and frame unit, the oil return hose with the one-level confluence block oil circuit intercommunication, the one-level confluence block with the second grade confluence block oil circuit intercommunication, the second grade confluence block with the one end oil circuit intercommunication of total confluence pipe, the shunt tubes with the other end oil circuit intercommunication of total confluence pipe; the total flow tube is fixedly arranged on the frame unit.
Further, the first-stage confluence block unit comprises at least one first-stage confluence block.
Furthermore, the first-stage confluence block comprises a connector, a one-way valve and a confluence block which are sequentially connected from top to bottom, and an oil port connector is arranged on the confluence block.
Further, the second-stage confluence block unit comprises a second-stage connecting flange, a second-stage confluence pipe, a mounting seat and a frame mounting plate I, wherein the second-stage connecting flange is connected with one end of the second-stage confluence pipe through a bolt, the mounting seat is fixed on a pipe body of the second-stage confluence pipe, and the frame mounting plate I is connected with the mounting seat through a bolt; the standby plugs are uniformly distributed on the tube body of the secondary confluence tube.
Further, the cross section of the second-stage confluence pipe is rectangular.
Furthermore, the total flow tube unit comprises a total flow tube, a front end connecting flange, a rear end connecting flange, a front end cover plate and a rear end cover plate, wherein the total flow tube is divided into a front end and a rear end and is respectively sealed with the rear end cover plate through the front end cover plate, the front end connecting flange is fixedly arranged on the side surface of the front end of the total flow tube, and the front end connecting flange and the front end cover plate are arranged at a certain angle; the rear end mounting flange is positioned on the front surface and the rear surface of the rear end of the total flow combining pipe.
Further, total confluence flow tube unit still includes mounting bar second mount pad and frame mounting panel II, the second mount pad is fixed to be set up on the pipe shaft of total confluence flow tube, the mounting bar with second mount pad bolted connection will the frame mounting panel fastening is in the centre, the second mount pad is greater than along total confluence flow tube length direction's two screw holes's interval frame mounting panel II's width.
Furthermore, the included angle between the front end connecting flange and the front end cover plate is 45 degrees.
Further, the cross section of the total flow tube is rectangular.
The utility model also discloses a drill jumbo, including above-mentioned hydraulic system oil returning device.
The utility model has the advantages that:
firstly, the pipeline is succinct pleasing to the eye, and assembly and maintenance are protected portably. Nearly 30 oil return hoses are completely converged into a rectangular steel pipe in front of the frame and then returned to the tail of the frame through the rectangular steel pipe. Therefore, the number of pipelines can be greatly reduced (the number of the pipelines is reduced from 30 to 1), the optimization processing of the pipelines is realized, and the attractiveness of the pipeline is greatly improved. And secondly, the oil return back pressure is small, and the rock drilling efficiency is improved. The rectangular steel pipe is adopted to replace a hydraulic rubber pipe, the oil return flow area of the hydraulic system can be greatly increased by improving the height size of the rectangular steel pipe, the oil return on-way pressure loss is further reduced, the oil return back pressure of the hydraulic system is reduced, and the efficiency of the rock drill is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an exploded view of a one-stage confluence block;
FIG. 3 is an exploded view of a two-stage confluence block unit;
FIG. 4 is an exploded view of the manifold unit;
FIG. 5 is a schematic diagram of a prior art configuration;
in the figure, 1-oil return hose, 2-first-stage confluence block unit, 2.1-first-stage confluence block, 2.1.1-connector, 2.1.2-one-way valve, 2.1.3-confluence block, 2.1.4-oil port connector, 3-second-stage confluence block unit, 3.1-second-stage connecting flange, 3.2-second-stage confluence pipe, 3.3-first mounting seat, 3.4-frame mounting plate I, 3.5-spare plug, 4-total confluence pipe unit, 4.1-total confluence pipe, 4.2-front end connecting flange, 4.3-rear end connecting flange, 4.4-front end cover plate, 4.5-rear end cover plate, 4.6-mounting strip, 4.7-second mounting seat, 4.8-frame mounting plate II, 5-shunt pipe, a 1-first-arm oil return pipe, a 2-first arm confluence block, a 3-first arm total pipe, b 1-second arm oil return pipeline, b 2-second arm flow combining block, b 3-second arm total oil return pipe, c 1-third arm oil return pipeline, c 2-third arm flow combining block and c 3-third arm total oil return pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, an oil return device of a hydraulic system comprises an oil return hose 1, a first-stage confluence block unit 2, a second-stage confluence block unit 3, a total confluence pipe unit 4 and a shunt pipe 5, wherein the oil return hose 1 is communicated with an oil path of the first-stage confluence block unit 2, the first-stage confluence block unit 2 is communicated with an oil path of the second-stage confluence block unit 3, the second-stage confluence block unit 3 is communicated with an oil path at one end of the total confluence pipe 4, and the shunt pipe 5 is communicated with an oil path at the other end of the total confluence pipe unit 4. Wherein, one-level confluence piece unit 2 includes at least one-level confluence piece 2.1, is equipped with three one-level confluence pieces 2.1 in this embodiment, is used for the arm No. one, the arm No. two and the arm No. three respectively. Compared with the prior art, the oil return device of the hydraulic system optimizes the design of an oil circuit system in the prior art, nearly 30 oil return hoses 1 from the first arm to the third arm are totally converged into a rectangular steel pipe in front of a frame, and then the rectangular steel pipe returns to the tail of the frame, so that the number of pipelines is greatly reduced, the spatial layout is optimized, and the oil circuit is more smooth and reasonable.
As shown in fig. 2, the first-stage confluence block 2.1 includes a connector 2.1.1, a check valve 2.1.2, and a confluence block 2.1.3 connected in sequence from top to bottom, and an oil port connector 2.1.4 is arranged on the confluence block 2.1.3. The function of the check valve 2.1.2 is that when the first arm is out of order and needs to be repaired, the oil return check valve sequence 2.1.2 of the first arm can prevent the return oil of the second arm and the third arm from flowing into the first-stage confluence block unit 2 of the first arm.
As shown in fig. 3, the second-stage confluence block unit 3 includes a second-stage connecting flange 3.1, a second-stage confluence pipe 3.2, a first mounting seat 3.3, a frame mounting plate I3.4 and a spare plug 3.5, the connecting flange 3.1 is connected with one end of the second-stage confluence pipe 3.2 by a bolt, the first mounting seat 3.3 is fixed on the pipe body of the second-stage confluence pipe 3.2, and the frame mounting plate I3.4 is connected with the first mounting seat 3.3 by a bolt; spare plugs 3.5 are uniformly distributed on the tube body of the second-stage confluence tube 3.2.
The cross section of the second-stage confluence pipe 3.2 is rectangular, namely a square pipe. The square tube can be made of standard cold-drawn square steel tube, and has low cost and convenient purchase.
As shown in fig. 4, the total flow combining pipe unit 4 includes a total flow combining pipe 4.1, a front end connecting flange 4.2, a rear end connecting flange 4.3, a front end cover plate 4.4, a rear end cover plate 4.5, a second mounting seat 4.6, a frame mounting plate II4.7, and a frame mounting plate II4.8, wherein the total flow combining pipe 4.1 is divided into a front end and a rear end, and is respectively sealed with the rear end cover plate 4.5 through the front end cover plate 4.4, the front end connecting flange 4.2 is fixedly arranged on the side surface of the front end of the total flow combining pipe 4.1, and the front end connecting flange 4.2 and the front end cover plate 4.4 are set up at a certain angle; the rear end mounting flange 4.3 is positioned on the front and rear surfaces of the rear end of the total flow combining pipe 4.1; the frame mounting plate II4.8 is fixedly arranged on the pipe body of the total flow pipe 4.1, and is fixedly connected with the second mounting seat 4.6 and the frame mounting plate II 4.8. Preferably, the angle between the front end connecting flange 4.2 and the front end cover plate 4.4 is 45 degrees. The cross section of the total flow combining pipe 4.1 is rectangular, and the square pipe also adopts a cold-drawn rectangular steel pipe. In addition, the rectangular square pipe can greatly improve the flow area, increase the flow capacity and effectively reduce the oil return back pressure by increasing the height of the rectangular pipe. And secondly, the cold-drawn rectangular steel pipe is adopted, so that the straightness is very good, the welding deformation caused by the tailor welding of the welding plates is avoided, and the cold-drawn rectangular steel pipe is very suitable for long-distance use. Front end flange 4.2 forms certain contained angle, especially 45 degrees angles with front end apron 4.4, can make its easier assembly, and secondly, the oblique 45 degrees angles make the hydraulic oil return of 3 second grade confluence units of preface smooth and easy, reduce the pressure loss.
The utility model discloses a drill jumbo, including the aforesaid hydraulic system oil returning device. Of course, this type of hydraulic system is also suitable for use in other work machines.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes that can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art can be made within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a hydraulic system oil return device which characterized in that: flow block unit (2), second grade confluence block unit (3), total flow tube unit (4), shunt tubes (5) are closed including oil return hose (1), one-level, oil return hose (1) with one-level closes flow block unit (2) oil circuit intercommunication, one-level confluence block unit (2) with second grade confluence block unit (3) oil circuit intercommunication, second grade confluence block unit (3) with total one end oil circuit intercommunication of flow tube unit (4), shunt tubes (5) with total other end oil circuit intercommunication of flow tube unit (4).
2. The oil return device of the hydraulic system according to claim 1, wherein: the primary stream combining block unit (2) comprises at least one primary stream combining block (2.1).
3. The oil return device of the hydraulic system according to claim 2, wherein: the primary flow combining block (2.1) comprises a connector (2.1.1), a one-way valve (2.1.2) and a flow combining block (2.1.3) which are sequentially connected from top to bottom, and an oil port connector (2.1.4) is arranged on the flow combining block (2.1.3).
4. The oil return device of the hydraulic system according to claim 1, wherein: the second-stage confluence block unit (3) comprises a second-stage connecting flange (3.1), a second-stage confluence pipe (3.2), a first mounting seat (3.3), a frame mounting plate I (3.4) and a spare plug (3.5), wherein the second-stage connecting flange (3.1) is in bolt connection with one end of the second-stage confluence pipe (3.2), the first mounting seat (3.3) is fixed on a pipe body of the second-stage confluence pipe (3.2), and the frame mounting plate I (3.4) is in bolt connection with the first mounting seat (3.3); the standby plugs (3.5) are uniformly distributed on the tube body of the second-stage confluence tube (3.2).
5. The oil return device of the hydraulic system according to claim 4, wherein: the cross section of the second-stage confluence pipe (3.2) is rectangular.
6. The oil return device of the hydraulic system according to claim 1, wherein: the total flow tube combination unit (4) comprises a total flow tube (4.1), a front end connecting flange (4.2), a rear end connecting flange (4.3), a front end cover plate (4.4) and a rear end cover plate (4.5), wherein the total flow tube (4.1) is divided into a front end and a rear end and is respectively sealed with the rear end cover plate (4.5) through the front end cover plate (4.4), the front end connecting flange (4.2) is fixedly arranged on the side surface of the front end of the total flow tube (4.1), and the front end connecting flange (4.2) and the front end cover plate (4.4) are arranged at a certain angle; the rear end connecting flanges (4.3) are positioned on the front and rear surfaces of the rear end of the main flow combining pipe (4.1).
7. The oil return device of the hydraulic system according to claim 1, wherein: always close flow tube unit (4) and still include mounting bar (4.6), second mount pad (4.7) and frame mounting panel II (4.8), second mount pad (4.7) are fixed to be set up always close on the pipe shaft of flow tube (4.1), mounting bar (4.6) with second mount pad (4.7) bolted connection will frame mounting panel II (4.8) fastening is in the centre, second mount pad (4.7) are followed always close the interval of two screw holes of flow tube (4.1) length direction and are greater than the width of frame mounting panel II (4.8).
8. The oil return device of the hydraulic system according to claim 6, wherein: the included angle between the front end connecting flange (4.2) and the front end cover plate (4.4) is 45 degrees.
9. The oil return device of the hydraulic system according to claim 6, wherein: the cross section of the total flow combining pipe (4.1) is rectangular.
10. A drill jumbo, its characterized in that: comprising the hydraulic system oil return apparatus of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021092099.XU CN212657078U (en) | 2020-06-15 | 2020-06-15 | Hydraulic system oil return device and drill jumbo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021092099.XU CN212657078U (en) | 2020-06-15 | 2020-06-15 | Hydraulic system oil return device and drill jumbo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212657078U true CN212657078U (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021092099.XU Active CN212657078U (en) | 2020-06-15 | 2020-06-15 | Hydraulic system oil return device and drill jumbo |
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| Country | Link |
|---|---|
| CN (1) | CN212657078U (en) |
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- 2020-06-15 CN CN202021092099.XU patent/CN212657078U/en active Active
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