Transfer chute device for material conveying of rock dumping machine and control method thereof
阅读说明：本技术 一种用于排岩机物料输送的转载溜槽装置及其控制方法 (Transfer chute device for material conveying of rock dumping machine and control method thereof ) 是由 马立峰 姚振强 吴凤彪 李文晋 陈晓斌 王志霞 赵广辉 潘伟桥 于 2020-07-01 设计创作，主要内容包括：本发明属于转载溜槽技术领域,具体涉及一种用于排岩机物料输送的转载溜槽装置及其控制方法,所述溜槽设置在排料臂臂架上,所述溜槽的一侧连接有输送机,所述溜槽另一侧的外壁上焊接有吊挂耳,所述溜槽另一侧的排料臂臂架上固定连接有固定机架,所述旋转铰链穿过固定机架上的通孔与吊挂耳铰接,所述排料臂臂架的底部固定有铰链,所述液压缸与铰链铰接,所述液压缸与活塞杆滑动连接,所述溜槽的外壁上固定有三角架,所述三角架设置在排料臂臂架的下方,所述三角架上固定有转动销轴,所述活塞杆通过转动销轴与三角架铰接。本发明中的溜槽腔型设计成折线型,利用多段斜面的缓冲作用减小岩土对排料臂输送机的冲击。本发明用于排岩机物料输送。(The invention belongs to the technical field of a transfer chute, and particularly relates to a transfer chute device for material conveying of a rock discharging machine and a control method thereof. The chute cavity is designed into a broken line type, and the impact of rock soil on the discharge arm conveyor is reduced by utilizing the buffer action of the multiple sections of inclined planes. The invention is used for conveying materials of the rock dumping machine.)
1. The utility model provides a reprint chute device for rock breaker material is carried which characterized in that: comprises a chute (1), a discharge arm frame (2), a conveyor (3), a hanging lug (5), a rotating hinge (6), a fixed frame (7), a hinge (10), a hydraulic cylinder (11), a piston rod (12), a rotating pin shaft (13) and a tripod (14), wherein the chute (1) is arranged on the discharge arm frame (2), one side of the chute (1) is connected with the conveyor (3), the hanging lug (5) is welded on the outer wall of the other side of the chute (1), the fixed frame (7) is fixedly connected on the discharge arm frame (2) of the other side of the chute (1), a through hole is arranged on the fixed frame (7), the rotating hinge (6) penetrates through the through hole on the fixed frame (7) to be hinged with the hanging lug (5), the hinge (10) is fixed at the bottom of the discharge arm frame (2), and the hydraulic cylinder (11) is hinged with the hinge (10), the hydraulic cylinder (11) is connected with the piston rod (12) in a sliding mode, a tripod (14) is fixed to the outer wall of the chute (1), the tripod (14) is arranged below the arm support (2) of the discharging arm, a rotating pin shaft (13) is fixed to the tripod (14), the piston rod (12) is hinged to the tripod (14) through the rotating pin shaft (13), and the piston rod (12) can rotate around the rotating pin shaft (13).
2. The transfer chute apparatus for rock quarrying machine material handling as claimed in claim 1 wherein: a rolling bearing (8) is arranged between the rotating hinge (6) and the hanging lug (5), and a locking sealing ring (9) is arranged at one end of the fixed rack (7).
3. The transfer chute apparatus for rock quarrying machine material handling as claimed in claim 1 wherein: the end of piston rod (12) is equipped with axle sleeve column structure (15), tubulose force transducer (16) are installed to the end of piston rod (12), tubulose force transducer (16) are installed on the inner wall of axle sleeve column structure (15) through adjusting screw (17), it establishes in axle sleeve column structure (15) to rotate round pin axle (13) cover.
4. The transfer chute apparatus for rock quarrying machine material handling as claimed in claim 1 wherein: the chute (1) is of a multi-section broken line type cavity type, the chute (1) comprises a first section chute (1.1), a second section chute (1.2) and a third section chute (1.3), the bottom of the first section chute (1.1) is connected with the top of the second section chute (1.2), the bottom of the second section chute (1.2) is connected with the top of the third section chute (1.3), and slopes of the first section chute (1.1), the second section chute (1.2) and the third section chute (1.3) are reduced in sequence.
5. A control method of a transfer chute device for material conveying of a rock dumping machine is characterized by comprising the following steps: comprises the following steps:
s1, when the chute does not rotate, the chute is in an initial state, the rotation angle alpha is 0, and the stress on the tail end of the piston rod in an unloaded state is as follows:
the gravity center of the chute when the chute does not rotate is as follows:
the G is1Is the chute gravity, S3Is the distance between the hinge and the chute, S2Is the length of a right-angle side of the tripod, H3The distance between the tail end of the piston rod and the straight line of the hanging lug is LhThe length is the normal length of the chute, and L is the sum of the lengths of the hydraulic cylinder and the piston rod;
s2, when the rock dumping machine works normally, the chute rotates anticlockwise by an angle alpha, the chute is more gentle, and the upper limit height of rock soil accumulation is set, namely the minimum distance h between the upper surface of the piled material and the inlet of the chuteminThen, the maximum force applied to the end of the piston rod at the moment can be calculated:
the G is0maxIs the maximum weight of the stack of material,said H2Is the distance between the hinge and the arm support of the discharging arm, d is the width of the chute, and L is1Is the length of the first section chute, said theta1Is the included angle between the first section of chute and the vertical direction, rho is the density of rock soil, g is the acceleration of gravity, L2Is the length of the second section of the chute, L3The length of the chute at the third section is shown, and the alpha is the anticlockwise rotation angle of the chute;
s3, when the density and viscosity of rock soil are increased, the belt speed of the conveyor is increased, the rock soil begins to be accumulated in the chute, and the stress at the tail end of the piston rod at any point is as follows:
the gravity center of the chute at any point is as follows:
x0＝(S2+Lh)cos(θ3+α)
theta is described3Is the included angle between the third section of the chute and the vertical direction, G0Is the gravity of the stockpileH is the distance between the upper surface of the stockpile and the inlet of the chute;
s4, setting detection time t0When the load cell detects FLValue exceeding FLmaxThe timer starts counting time at t0If the detected value F is at a certain moment in timeLLess than FLmaxThe timer is reset to zero until the next FLValue exceeding FLmaxAt time t, the timer is restarted, if at t0Within time FLValue always greater than FLmaxIf so, the material is judged to be piled, the industrial personal computer feeds back to the hydraulic loop at the moment, the piston rod is controlled to move, the rotation angle alpha is reduced to zero, the chute is restored to the initial position, the angle between the chute outlet and the conveying belt is increased, the chute inclined plane is steeper, the piled material is moved, and the phenomenon of piling is relieved;
s5, the chute is restored to the initial position, the rock discharging machine still performs the rock discharging work, and even if the stacking problem is solved, rock soil still exists in the chute during the transfer, so that the calculated piston rod stress value F of the chute in the no-load state is calculatedL0Should be properly amplified as a detection standard, i.e. FLmin＝SFL0The value range of S is 1.2-1.5, and when the chute is restored to the initial position, the detection value F is detectedLFrom FLmaxGradually decreases when the measured value of the force sensor decreases to a set value FLminThen the control system judges that the stacking problem is solved, and controls the chute to be kept at the initial position t1After time, the control system controls the hydraulic circuit to work, so that the chute rotates by an angle alpha and returns to the working position before stacking.
Technical Field
The invention belongs to the technical field of transfer chutes, and particularly relates to a transfer chute device for material conveying of a rock discharging machine and a control method thereof.
Background
The rock dumping machine is continuous and efficient dumping equipment in the strip mining process, is responsible for dumping wastes mined from strip mines into a dumping yard, and is an important part of the strip mining process equipment. Rock soil discharged from the crushing station is conveyed to a material receiving arm of a rock discharging machine, conveyed to a transshipment position through a material receiving arm conveyor, falls onto a material discharging arm conveyor through a transshipment chute and is conveyed to a soil discharging field through the material discharging arm conveyor. At present, the chute simple structure of most rock discharging machine reprint department, the chamber type is mostly the linear type, and the material is almost vertical drop down to the conveyer belt on, leads to the material great to the impact vibration that row material arm conveyer produced, and is big to row material arm conveyer impact damage. And the material is vertical to fall on the conveyer belt, does not divide the speed on the horizontal direction, then can produce the windrow in the transshipment department, makes the conveyer belt produce great deformation, and the aggravation conveyer belt is lax, also can damage equipment, influences production efficiency.
Disclosure of Invention
Aiming at the technical problems that the chute is linear and stockpiling is easy to occur at the chute transshipment position, the invention provides the transshipment chute device for material conveying of the rock dumping machine and the control method thereof, wherein the transshipment chute device is multi-section broken line type, high in efficiency and high in automation degree.
In order to solve the technical problems, the invention adopts the technical scheme that:
a transshipment chute device for material conveying of a rock discharging machine comprises a chute, a discharge arm frame, a conveyor, a hanging lug, a rotating hinge, a fixed frame, a hinge, a hydraulic cylinder, a piston rod, a rotating pin shaft and a triangular frame, wherein the chute is arranged on the discharge arm frame, one side of the chute is connected with the conveyor, the hanging lug is welded on the outer wall of the other side of the chute, the fixed frame is fixedly connected on the discharge arm frame of the other side of the chute, a through hole is formed in the fixed frame, the rotating hinge penetrates through the through hole in the fixed frame and is hinged with the hanging lug, the hinge is fixed at the bottom of the discharge arm frame, the hydraulic cylinder is hinged with the hinge, the hydraulic cylinder is connected with the piston rod in a sliding manner, the triangular frame is fixed on the outer wall of the chute, the triangular frame is arranged below the discharge arm frame, and the rotating pin shaft, the piston rod is hinged with the tripod through a rotating pin shaft and can rotate around the rotating pin shaft.
A rolling bearing is arranged between the rotary hinge and the hanging lug, and a locking sealing ring is arranged at one end of the fixed rack.
The tail end of the piston rod is provided with a shaft sleeve-shaped structure, the tail end of the piston rod is provided with a tubular force sensor, the tubular force sensor is arranged on the inner wall of the shaft sleeve-shaped structure through an adjusting screw, and the rotating pin is arranged in the shaft sleeve-shaped structure in a shaft sleeve-shaped mode.
The chute is of a multi-section broken line type cavity type and comprises a first section chute, a second section chute and a third section chute, wherein the bottom of the first section chute is connected with the top of the second section chute, the bottom of the second section chute is connected with the top of the third section chute, and the slopes of the first section chute, the second section chute and the third section chute are sequentially reduced.
A control method of a transfer chute device for material conveying of a rock dumping machine comprises the following steps:
s1, when the chute does not rotate, the chute is in an initial state, the rotation angle alpha is 0, and the stress on the tail end of the piston rod in an unloaded state is as follows:
the gravity center of the chute when the chute does not rotate is as follows:
the G is1Is the chute gravity, S3Is the distance between the hinge and the chute, S2Is the length of a right-angle side of the tripod, H3The distance between the tail end of the piston rod and the straight line of the hanging lug is LhThe length is the normal length of the chute, and L is the sum of the lengths of the hydraulic cylinder and the piston rod;
s2, when the rock dumping machine works normally, the chute rotates anticlockwise by an angle alpha, the chute is more gentle, and the upper limit height of rock soil accumulation is set, namely the minimum distance h between the upper surface of the piled material and the inlet of the chuteminThen, the maximum force applied to the end of the piston rod at the moment can be calculated:
the G is0maxIs the maximum weight of the stack of material,
s3, when the density and viscosity of rock soil are increased, the belt speed of the conveyor is increased, the rock soil begins to be accumulated in the chute, and the stress at the tail end of the piston rod at any point is as follows:
the gravity center of the chute at any point is as follows:
x0＝(S2+Lh)cos(θ3+α)
theta is described3Is the included angle between the third section of the chute and the vertical direction, G0Is the gravity of the stockpileH is the distance between the upper surface of the stockpile and the inlet of the chute;
s4, setting detection time t0When the load cell detects FLValue exceeding FLmaxThe timer starts counting time at t0If the detected value F is at a certain moment in timeLLess than FLmaxThe timer is reset to zero until the next FLValue exceeding FLmaxAt time t, the timer is restarted, if at t0Within time FLValue always greater than FLmaxIf so, the material is judged to be piled, the industrial personal computer feeds back to the hydraulic loop at the moment, the piston rod is controlled to move, the rotation angle alpha is reduced to zero, the chute is restored to the initial position, the angle between the chute outlet and the conveying belt is increased, the chute inclined plane is steeper, the piled material is moved, and the phenomenon of piling is relieved;
s5, the chute is restored to the initial position, the rock discharging machine still performs the rock discharging work, and even if the stacking problem is solved, rock soil still exists in the chute during the transfer, so that the calculated piston rod stress value F of the chute in the no-load state is calculatedL0Should be properly amplified as a detection standard, i.e. FLmin＝SFL0The value range of S is 1.2-1.5, and when the chute is restored to the initial position, the detection value F is detectedLFrom FLmaxGradually decreases when the measured value of the force sensor decreases to a set value FLminThen the control system judges that the stacking problem is solved, and controls the chute to be kept at the initial position t1After time, the control system controls the hydraulic circuit to work, so that the chute rotates by an angle alpha and returns to the working position before stacking.
Compared with the prior art, the invention has the following beneficial effects:
1. the chute cavity is not linear any more, and is designed into a broken line section with gradually increasing slope, the slope of the cavity gradually becomes smaller and gradually tends to be gentle from the top of the chute to the chute outlet, a variable resistance surface interval is formed on the material, the kinetic energy of the material is reduced through the multi-section broken line type cavity, the large material and the small material can play a speed reduction effect, the vibration impact on the conveying belt is reduced, and the service life of the conveying belt is prolonged;
2. the chute can realize the angle adjustment of the discharge port and the conveying belt through a hydraulic system and a hinge, can adjust the angle appropriately according to parameters such as material types, granularity, motion accumulation conditions and the like, indirectly adjust the horizontal component speed of the material, can adjust the material to a small angle when the material transfer speed is too high, and buffer the material to the outlet conveying belt at a low inertia, thereby reducing the impact of the material on the conveying belt;
3. the invention is provided with a monitoring system, establishes the stockpiling height h and the stress F of the tail end of the piston rodLThe function model can judge whether materials are stacked according to the model, the stacking height can be set according to rock-soil parameters and the working environment, the acting force applied to the tail end of the piston rod is measured through the tubular force sensor to judge whether the materials are stacked, when the stacking standard is reached, the industrial personal computer controls the hydraulic loop to work, the chute inclination angle is increased, the rock-soil transfer is accelerated, and the stacking phenomenon is delayed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is another schematic structural view of the present invention;
FIG. 3 is a schematic structural view of a hydraulic cylinder and a tripod according to the present invention;
FIG. 4 is a schematic view of the end of the piston rod of the present invention;
FIG. 5 is a simplified diagram of the no-load theory of the present invention;
FIG. 6 is a simplified diagram of the rotation theory of the present invention;
wherein: the device comprises a
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
A transshipment chute device for material conveying of a rock discharging machine is disclosed, as shown in figures 1 and 2, and comprises a
Furthermore, a rolling
Further, the tail end of the
Further, preferably, the
A control method of a transfer chute device for material conveying of a rock dumping machine comprises the following steps:
s1, when the chute does not rotate, the chute is in an initial state, the rotation angle alpha is 0, and the stress on the tail end of the piston rod in an unloaded state is as follows:
the gravity center of the chute when the chute does not rotate is as follows:
G1is the chute gravity, S3Is the distance between the hinge and the chute, S2Is the length of the right-angle side of the tripod, H3The distance L between the end of the piston rod and the straight line of the hanging lughThe length of the chute is normal, and L is the sum of the lengths of the hydraulic cylinder and the piston rod;
s2, when the rock dumping machine works normally, the chute rotates anticlockwise by an angle alpha, the chute is more gentle, and the upper limit height of rock soil accumulation is set, namely the minimum distance h between the upper surface of the piled material and the inlet of the chuteminThen, the maximum force applied to the end of the piston rod at the moment can be calculated:
G0maxis the maximum weight of the stack of material,H2is the distance between the hinge and the arm support of the discharging arm, d is the width of the chute, L1Is the length of the first section chute, theta1Is the included angle between the first section of chute and the vertical direction, rho is the density of rock soil, g is the acceleration of gravity, and L is2Is the length of the second section chute, L3The length of the chute in the third section is shown, and alpha is the anticlockwise rotation angle of the chute;
s3, when the density and viscosity of rock soil are increased, the belt speed of the conveyor is increased, the rock soil begins to be accumulated in the chute, and the stress at the tail end of the piston rod at any point is as follows:
the gravity center of the chute at any point is as follows:
x0＝(S2+Lh)cos(θ3+α)
θ3is the included angle between the third section of chute and the vertical direction G0In order to be the gravity of the stockpile, h is the distance between the upper surface of the stockpile and the inlet of the chute;
s4, setting detection time t0When the load cell detects FLValue exceeding FLmaxThe timer starts counting time at t0If the detected value F is at a certain moment in timeLLess than FLmaxThe timer is reset to zero until the next FLValue exceeding FLmaxAt time t, the timer is restarted, if at t0Within time FLValue always greater than FLmaxIf so, the material is judged to be piled, and the industrial personal computer feeds back to the hydraulic loopThe piston rod is controlled to move, so that the rotation angle alpha is reduced to zero, the chute is restored to the initial position, the angle between the chute outlet and the conveying belt is increased, the chute inclined plane is steeper, the stacked materials move, and the stacking phenomenon is relieved;
s5, the chute is restored to the initial position, the rock discharging machine still performs the rock discharging work, and even if the stacking problem is solved, rock soil still exists in the chute during the transfer, so that the calculated piston rod stress value F of the chute in the no-load state is calculatedL0Should be properly amplified as a detection standard, i.e. FLmin＝SFL0The value range of S is 1.2-1.5, and when the chute is restored to the initial position, a detection value F is obtainedLFrom FLmaxGradually decreases when the measured value of the force sensor decreases to a set value FLminThen the control system judges that the stacking problem is solved, and controls the chute to be kept at the initial position t1After time, the control system controls the hydraulic circuit to work, so that the chute rotates by an angle alpha and returns to the working position before stacking.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
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