CN211844392U - Hydraulic braking system and rotary drilling rig - Google Patents
Hydraulic braking system and rotary drilling rig Download PDFInfo
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- CN211844392U CN211844392U CN202020538377.3U CN202020538377U CN211844392U CN 211844392 U CN211844392 U CN 211844392U CN 202020538377 U CN202020538377 U CN 202020538377U CN 211844392 U CN211844392 U CN 211844392U
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- 238000005553 drilling Methods 0.000 title claims abstract description 33
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 24
- 239000003921 oil Substances 0.000 claims description 82
- 239000010720 hydraulic oil Substances 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application relates to the technical field of braking systems, in particular to a hydraulic braking system and a rotary drilling rig. The hydraulic braking system is used for the rotary drilling rig and comprises a plurality of brakes; the plurality of brakes act on a connecting shaft between a rotary motor and a speed reducer of the rotary drilling rig, one brake is arranged at the rotary motor, and the other brake is arranged at the speed reducer. The hydraulic braking system can provide larger braking torque to guarantee that the rotary drilling rig can effectively brake in telescopic drill rod operation.
Description
Technical Field
The application relates to the technical field of braking systems, in particular to a hydraulic braking system and a rotary drilling rig.
Background
At present, the rotary drilling rig basically adopts a telescopic drill rod for operation. The drilling process of the rotary drilling rig is as follows: and after the bucket of soil is fully drilled, the drill is lifted to the position above the ground, the soil is discharged in a rotary mode, the drill returns to the designated hole position in a reverse mode, and the operations are repeated. In the process, because the speed reducer stops suddenly, the instantaneous kinetic energy is large, and large-torque braking is needed.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a hydraulic braking system and a rotary drilling rig so as to provide larger braking torque and realize effective braking.
The application provides a hydraulic braking system for a rotary drilling rig, which comprises a plurality of brakes;
the plurality of brakes act on a connecting shaft between a rotary motor and a speed reducer of the rotary drilling rig, one brake is arranged at the rotary motor, and the other brake is arranged at the speed reducer.
In the above technical solution, further, the device further comprises a first direction changing valve;
the oil cylinder side of the brake is connected with the first reversing valve;
the first reversing valve can switch the position of a valve core, when the valve core of the first reversing valve is positioned at a first position, the oil cylinder side of the brake is communicated with a pilot oil port, and hydraulic oil can flow into the oil cylinder side of the brake from the pilot oil port so as to enable the brake to release braking;
when the valve core of the first reversing valve is located at the second position, the oil cylinder side of the brake is communicated with the oil discharging port, and hydraulic oil can flow to the oil discharging port from the oil cylinder side so as to brake the brake.
In the above technical solution, further, the first direction valve is a hydraulic direction valve.
In the above technical solution, further, the device further comprises a second direction changing valve;
the second reversing valve is an electromagnetic reversing valve and is arranged between a hydraulic control port of the hydraulic reversing valve and the pilot oil port;
the second reversing valve can switch the position of a valve core, when the valve core of the second reversing valve is positioned at the first position, a hydraulic control port of the hydraulic reversing valve is communicated with the pilot oil port, and hydraulic oil can flow into the hydraulic control port of the hydraulic reversing valve from the pilot oil port;
when the valve core of the second reversing valve is located at the second position, the hydraulic control port of the hydraulic reversing valve is communicated with the oil unloading port, and hydraulic oil can flow from the hydraulic control port of the hydraulic reversing valve to the oil unloading port.
In the above technical solution, further, the timing valve assembly is further included;
the delay valve assembly is located between the cylinder side of the brake and the oil discharge port.
In the above technical solution, further, when the spool of the first direction valve is located at the second position, the cylinder side of the brake is also communicated with the spring side of the brake, and hydraulic oil can flow from the cylinder side of the brake to the spring side of the brake.
The application also provides a rotary drilling rig which comprises the rotary motor, the speed reducer and the hydraulic braking system.
In the above technical solution, further, a first safety valve group and a second safety valve group are arranged between an oil inlet and an oil outlet of the rotary motor;
the first safety valve group comprises a first overflow valve and a first check valve which are connected in series, and the second safety valve group comprises a second overflow valve and a second check valve which are connected in series;
the flow directions of the first overflow valve and the second overflow valve are opposite; the first one-way valve and the second one-way valve are opposite in flow direction.
In the above technical solution, further, input sides of the first check valve and the second check valve communicate with an oil supply port.
In the above technical solution, further, a first anti-reverse valve and a second anti-reverse valve are further disposed between an oil inlet and an oil outlet of the rotary motor, and flow directions of the first anti-reverse valve and the second anti-reverse valve are opposite.
Compared with the prior art, the beneficial effect of this application is:
the hydraulic braking system is used for the rotary drilling rig and comprises a plurality of brakes; the plurality of brakes act on a connecting shaft between a rotary motor and a speed reducer of the rotary drilling rig, one brake is arranged at the rotary motor, and the other brake is arranged at the speed reducer.
Particularly, the hydraulic braking system that this application provided includes a plurality of brakers, includes speed reducer stopper and motor brake in a plurality of brakers, and in the rotary system including slewing motor and speed reducer, speed reducer stopper and motor brake can provide braking torque simultaneously, have increased the slewing braking torque of whole car for the upper truck body of rotary drilling rig can be locked. The multiple brakes work simultaneously, can also guarantee that the rig slewing positioning is accurate to solve the rig and go up under the automobile body locking state in the construction, the horizontal hunting problem that appears easily, and after the implementation, do not have the influence to other systems, reduced the transformation cost.
The hydraulic braking system can provide larger braking torque to guarantee that the rotary drilling rig can effectively brake in telescopic drill rod operation.
The application also provides a rotary drilling rig which comprises the hydraulic braking system in the scheme. Based on the analysis, the rotary drilling rig also has the beneficial effects, and the details are not repeated.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a hydraulic brake system provided herein;
fig. 2 is a schematic structural diagram of the rotary drilling rig provided in the present application.
In the figure: 101-a brake; 102-a rotary motor; 103-a speed reducer; 104-a first directional valve; 105-a pilot oil port; 106-oil discharge port; 107-a second reversing valve; 108-a time delay valve assembly; 109-a first overflow valve; 110-a first one-way valve; 111-a second relief valve; 112-a second one-way valve; 113-oil supplementing port; 114-a first anti-reversal valve; 115-second anti-reversal valve.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example one
Referring to fig. 1 and 2, the hydraulic braking system provided by the present application is used for a rotary drilling rig, and includes a plurality of brakes 101; the plurality of brakes 101 act on a connecting shaft between a rotary motor 102 and a speed reducer 103 of the rotary drilling rig, wherein one brake 101 is arranged at the rotary motor 102, and one brake 101 is arranged at the speed reducer 103.
Specifically, the hydraulic braking system provided by the application comprises a plurality of brakes 101, the plurality of brakes 101 comprise speed reducer brakes and motor brakes, and in a slewing system comprising a slewing motor 102 and a speed reducer 103, the speed reducer brakes and the motor brakes can provide braking torque at the same time, so that the slewing braking torque of the whole vehicle is increased, and the vehicle-mounted body of the rotary drilling rig can be locked. The plurality of brakes 101 work simultaneously, can also guarantee that the rig gyration location is accurate to solve the rig and go up under the locking state of automobile body in the construction, the left and right hunting problem that appears easily, and after the implementation, do not have the influence to other systems, reduced the transformation cost.
The application provides a hydraulic braking system through a plurality of brakes 101 to provide bigger braking moment, in order to guarantee that rotary drilling rig can effectively brake in telescopic drilling rod operation.
In an alternative of this embodiment, the hydraulic brake system further includes a first direction valve 104; the cylinder side of the brake 101 is connected to a first direction change valve 104; the first direction changing valve 104 can switch the spool position, when the spool of the first direction changing valve 104 is located at the first position, the cylinder side of the brake 101 is communicated with the pilot oil port 105, and hydraulic oil can flow into the cylinder side of the brake 101 from the pilot oil port 105 to release the brake of the brake 101; when the spool of the first direction valve 104 is located at the second position, the cylinder side of the brake 101 communicates with the oil discharge port 106, and hydraulic oil can flow from the cylinder side to the oil discharge port 106 to brake the brake 101.
In this embodiment, the first direction change valve 104 functions to switch the oil path, and when the cylinder side of the brake 101 communicates with the pilot oil port 105, the pilot oil port 105 injects hydraulic oil to the cylinder side, and the brake 101 releases the connecting shaft between the swing motor 102 and the reduction gear 103, thereby releasing the braking action on the swing motor 102 and the reduction gear 103; when the cylinder side of the brake 101 is communicated with the oil discharge port 106, hydraulic oil on the cylinder side flows into the oil tank from the oil discharge port 106 to release pressure on the cylinder side, and the elastic force generated by the spring side of the brake 101 pushes the piston to move towards the cylinder side, so that the connection shaft between the rotary motor 102 and the speed reducer 103 is braked.
In an alternative to this embodiment, the first direction valve 104 is a hydraulically operated direction valve.
Since the movement of the spool of the first direction valve 104 relative to the valve body requires an external force manipulation to achieve, in this embodiment, the first direction valve 104 functions to switch the oil passage by controlling the position of the spool relative to the valve body by hydraulic pilot.
In an alternative of this embodiment, the hydraulic brake system further includes a second direction switching valve 107; the second reversing valve 107 is arranged between the hydraulic control port of the hydraulic reversing valve and the pilot oil port 105; the second reversing valve 107 can switch the position of a valve core, when the valve core of the second reversing valve 107 is positioned at the first position, the hydraulic control port of the hydraulic reversing valve is communicated with the pilot oil port 105, and hydraulic oil can flow into the hydraulic control port of the hydraulic reversing valve from the pilot oil port 105; when the spool of the second directional valve 107 is located at the second position, the hydraulic control port of the hydraulic directional valve is communicated with the oil discharge port 106, and hydraulic oil can flow from the hydraulic control port of the hydraulic directional valve to the oil discharge port 106.
In this embodiment, the second direction valve 107 is an electromagnetic direction valve, and when braking is required or the braking is released, an operator can quickly switch the electromagnetic direction valve, so that the rotary motor 102 and the speed reducer 103 can be braked in time. Specifically, before giving a command, the spool of the second directional valve 107 is in the second position, at this time, the hydraulic control port of the hydraulic directional valve is not under oil pressure, the spool of the first directional valve 104 is in the second position, and the brake 101 is in a braking state; when a command is given, the spool of the second switching valve 107 is switched to the first position to communicate the pilot oil port 105 with the hydraulic control port of the hydraulically operated switching valve, the spool of the first switching valve 104 whose hydraulic control port is at the same oil pressure as the hydraulic control port of the hydraulically operated switching valve is switched to the first position, hydraulic oil flows into the cylinder side, and the brake 101 is released from braking.
In an alternative version of this embodiment, the hydraulic brake system further includes a delay valve assembly 108; a time delay valve assembly 108 is located between the cylinder side of the brake 101 and the oil discharge port 106.
In this embodiment, the delay valve assembly 108 is a combination valve formed by connecting a throttle valve for adjusting the flow rate therethrough and a constant-differential pressure reducing valve for automatically compensating the influence of load variation so that the differential pressure before and after the throttle valve is a constant value, thereby eliminating the influence of load variation on the flow rate. The pressure in front of and behind the throttle valve is respectively led to two ends of a valve core of the pressure reducing valve, when the load pressure is increased, the hydraulic pressure acting on one end of the pressure reducing valve core is increased, the valve core moves towards the other end, a pressure reducing port is increased, and the pressure drop is reduced, so that the pressure difference of the throttle valve is kept unchanged; and vice versa. This keeps the flow rate of the delay valve assembly 108 constant (independent of load). The delay valve assembly 108 is located between the cylinder side of the brake 101 and the oil discharge port 106, and when oil is returned, the time for resetting the brake 101 is reduced through the throttling function of the throttle valve, so that delay braking is realized.
It should be noted that, in some systems, the delay valve assembly 108 may be eliminated, and the delay control is realized by an electronic control system, that is, the pilot oil is directly controlled by a brake solenoid valve to enter and return oil. Compared with the electric control delay, the hydraulic control delay is more stable because the brake 101 is slowly released.
In an alternative of this embodiment, when the spool of the first direction change valve 104 is located at the second position, the cylinder side of the brake 101 is also communicated with the spring side of the brake 101, and hydraulic oil can flow from the cylinder side of the brake 101 to the spring side of the brake 101.
In this embodiment, the hydraulic oil can flow from the cylinder side of the brake 101 to the spring side of the brake 101, that is, the hydraulic oil generated by the hydraulic oil can be used for auxiliary braking, and the resultant force of the hydraulic oil generated by the hydraulic oil and the elastic force generated by the spring side acts, so that the braking effect is better.
Example two
The second embodiment of the application provides a rotary drilling rig, which comprises a rotary motor, a speed reducer and the hydraulic braking system of the first embodiment, so that all beneficial technical effects of the hydraulic braking system of the first embodiment are achieved, and the detailed description is omitted.
In an optional scheme of the embodiment, a first safety valve bank and a second safety valve bank are arranged between an oil inlet and an oil outlet of the rotary motor 102; the first safety valve group comprises a first overflow valve 109 and a first check valve 110 which are connected in series, and the second safety valve group comprises a second overflow valve 111 and a second check valve 112 which are connected in series; the flow directions of the first relief valve 109 and the second relief valve 111 are opposite; the first one-way valve 110 and the second one-way valve 112 flow in opposite directions.
In this embodiment, the oil inlet and the oil outlet of the rotary motor 102 can be switched. As shown in fig. 2, the rotary motor 102 can feed oil in left rotation (Fa1) or right rotation (Fb1), and the oil in the other path returns oil, and the rotary motor 102 drives the upper vehicle to rotate through the speed reducer 103.
Specifically, first safety valve group and second safety valve group correspond the condition of rotary motor 102 left gyration (Fa1) and right gyration (Fb1) oil feed respectively, and at the start-stop in-process, first safety valve group and second safety valve group can improve the buffer characteristic that steps up, reduce the impact, guarantee the safe operation of equipment.
In an alternative to this embodiment, the input sides of the first check valve 110 and the second check valve 112 communicate with the oil replenishment port 113.
In this embodiment, the first check valve 110 and the second check valve 112 correspond to the oil inlet condition of the rotary motor 102 during left rotation (Fa1) and right rotation (Fb1), respectively, and when the rotary motor 102 is not in time to supply oil, oil is replenished through the first check valve 110 and the second check valve 112 to avoid causing suction.
In an alternative scheme of the embodiment, a first anti-reverse rotation valve 114 and a second anti-reverse rotation valve 115 are further arranged between the oil inlet and the oil outlet of the rotary motor 102, and the flow directions of the first anti-reverse rotation valve 114 and the second anti-reverse rotation valve 115 are opposite.
In this embodiment, the first anti-reverse valve 114 and the second anti-reverse valve 115 correspond to the situation that the oil is fed in the left rotation (Fa1) and the right rotation (Fb1) of the rotation motor 102, and when the pressure on one side of the first anti-reverse valve 114 or the second anti-reverse valve 115 is too high, the pressure on the high pressure end can be released to the low pressure end to prevent the swing during the rotation.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application. Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments.
Claims (10)
1. A hydraulic braking system is used for a rotary drilling rig and is characterized by comprising a plurality of brakes;
the plurality of brakes act on a connecting shaft between a rotary motor and a speed reducer of the rotary drilling rig, one brake is arranged at the rotary motor, and the other brake is arranged at the speed reducer.
2. The hydraulic brake system of claim 1, further comprising a first directional control valve;
the oil cylinder side of the brake is connected with the first reversing valve;
the first reversing valve can switch the position of a valve core, when the valve core of the first reversing valve is positioned at a first position, the oil cylinder side of the brake is communicated with a pilot oil port, and hydraulic oil can flow into the oil cylinder side of the brake from the pilot oil port so as to enable the brake to release braking;
when the valve core of the first reversing valve is located at the second position, the oil cylinder side of the brake is communicated with the oil discharging port, and hydraulic oil can flow to the oil discharging port from the oil cylinder side so as to brake the brake.
3. The hydraulic brake system of claim 2, wherein the first direction valve is a hydraulically operated direction valve.
4. The hydraulic brake system of claim 3, further comprising a second directional valve;
the second reversing valve is an electromagnetic reversing valve and is arranged between a hydraulic control port of the hydraulic reversing valve and the pilot oil port;
the second reversing valve can switch the position of a valve core, when the valve core of the second reversing valve is positioned at the first position, a hydraulic control port of the hydraulic reversing valve is communicated with the pilot oil port, and hydraulic oil can flow into the hydraulic control port of the hydraulic reversing valve from the pilot oil port;
when the valve core of the second reversing valve is located at the second position, the hydraulic control port of the hydraulic reversing valve is communicated with the oil unloading port, and hydraulic oil can flow from the hydraulic control port of the hydraulic reversing valve to the oil unloading port.
5. The hydraulic brake system of claim 2, further comprising a time delay valve assembly;
the delay valve assembly is located between the cylinder side of the brake and the oil discharge port.
6. The hydraulic brake system of claim 2, wherein when the spool of the first directional valve is in the second position, the cylinder side of the brake is also in communication with the spring side of the brake, and hydraulic oil is able to flow from the cylinder side of the brake to the spring side of the brake.
7. A rotary drilling rig characterized by comprising a rotary motor, a speed reducer and a hydraulic braking system according to any one of claims 1 to 6.
8. The rotary drilling rig according to claim 7, wherein a first safety valve bank and a second safety valve bank are arranged between an oil inlet and an oil outlet of the rotary motor;
the first safety valve group comprises a first overflow valve and a first check valve which are connected in series, and the second safety valve group comprises a second overflow valve and a second check valve which are connected in series;
the flow directions of the first overflow valve and the second overflow valve are opposite; the first one-way valve and the second one-way valve are opposite in flow direction.
9. The rotary drilling rig according to claim 8, wherein input sides of the first one-way valve and the second one-way valve are communicated with an oil supplementing port.
10. The rotary drilling rig according to claim 7, wherein a first anti-reverse valve and a second anti-reverse valve are further arranged between the oil inlet and the oil outlet of the rotary motor, and the flow directions of the first anti-reverse valve and the second anti-reverse valve are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020538377.3U CN211844392U (en) | 2020-04-13 | 2020-04-13 | Hydraulic braking system and rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020538377.3U CN211844392U (en) | 2020-04-13 | 2020-04-13 | Hydraulic braking system and rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211844392U true CN211844392U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020538377.3U Expired - Fee Related CN211844392U (en) | 2020-04-13 | 2020-04-13 | Hydraulic braking system and rotary drilling rig |
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| Country | Link |
|---|---|
| CN (1) | CN211844392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301368A (en) * | 2020-04-13 | 2020-06-19 | 三一重机有限公司 | Hydraulic braking system and rotary drilling rig |
-
2020
- 2020-04-13 CN CN202020538377.3U patent/CN211844392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301368A (en) * | 2020-04-13 | 2020-06-19 | 三一重机有限公司 | Hydraulic braking system and rotary drilling rig |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |