Emulsion control system for stretching and retracting of belt conveyor

Abstract

The invention discloses an emulsion control system for stretching and retracting of a belt conveyor, which comprises a power source assembly, a transmission filter assembly, a flow direction control assembly, a machine head lifting assembly, a machine head supporting assembly, a machine head deviation adjusting assembly and a machine head deviation assembly. Compared with the prior art, the telescopic mechanical control precision is high, the belt conveyor can rapidly follow the fully mechanized coal mining face coal mining equipment, the coal mining efficiency is improved, the coal mining progress is accelerated, the production efficiency is high, short-distance manual participation is not needed in the whole process, the safety risk is low, the labor intensity is low, and the practicability is high; the method is suitable for wide popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of mining belt conveyor control, in particular to an emulsion control system for belt conveyor telescopic operation. Background Art

[0002] A fully-mechanized mining face refers to a face where the basic processes of coal breaking, coal loading, coal transportation, support and post-mining processing are all mechanized. The belt conveyor used in the fully-mechanized mining face usually needs to be extended and retracted to adapt to the changes in the length of the face and the progress of coal mining, so as to improve the efficiency and safety of coal mining and enhance the flexibility and adaptability of the belt conveyor. At present, the belt conveyor is extended and retracted by manual operation. However, due to the complex geological conditions, harsh environmental conditions, high work intensity and high safety risks of the fully-mechanized mining face, this operation mode has the following shortcomings:

[0003] 1. Low production efficiency: Due to the relatively narrow construction operation space and the existence of coal mining equipment operations, it is impossible to organize large-scale manual operations. Manual operation and extension require a lot of time and energy, and cannot quickly adapt to changes in the length of the working face, affecting the progress and efficiency of coal mining, and seriously restricting the coal mining output of the fully mechanized mining face;

[0004] 2. High safety risk: Since the construction operation space is relatively narrow and the coal mining equipment does not stop, the operator operates between the equipment gaps. During the manual operation and extension process, the operator needs to approach the conveyor for manual adjustment, which is very prone to accidents. At the same time, if the operation is improper, it may also cause conveyor failure or accidents.

[0005] 3. High labor intensity: Since the middle extension section of the belt conveyor contains belts and other devices, it has a large weight. During the disassembly and assembly operation, the operator needs to perform heavy physical labor, which increases the physical burden on the operator;

[0006] 4. Insufficient precision: It is difficult to achieve precise telescopic adjustment by manual operation, which may lead to inaccurate conveyor position, affecting coal mining efficiency and conveyor life.

[0007] Based on the above shortcomings, the telescopic control of the belt conveyor in the existing comprehensive mining working face can no longer meet people's needs and needs to be solved urgently. Summary of the invention

[0008] The present invention provides an emulsion control system for belt conveyor extension and retraction to solve the technical problems that the belt conveyor in the existing comprehensive mining working face is manually operated, has low production efficiency, high safety risk, high labor intensity and insufficient precision.

[0009] According to one aspect of the present invention, there is provided an emulsion control system for a telescopic belt conveyor, wherein the belt conveyor comprises two heads and a telescopic frame arranged between the two heads, and the emulsion control system comprises: a power source assembly for providing and transmitting the emulsion; a transmission and filtering assembly connected to the power source assembly for transmitting and filtering the emulsion; a flow control assembly connected to the transmission and filtering assembly for transmitting and controlling the flow direction of the emulsion; a head lifting assembly connected to the flow control assembly for driving the head to lift and lower vertically, thereby driving the head to approach or move away from a working surface; a head supporting assembly connected to the flow control assembly for driving the support shoe to move, so as to increase or decrease the adhesion of the head, thereby driving the telescopic frame to move relative to the head; a head deflection adjustment assembly connected to the flow control assembly for driving the head to move left and right, so as to adjust the direction of travel of the head; a head pushing assembly connected to the flow control assembly for driving the telescopic frame to move forward and backward relative to the head, or driving the head to move forward and backward relative to the telescopic frame.

[0010] As a further improvement of the above technical solution:

[0011] Furthermore, the machine head lifting assembly includes two lifting parts, which are arranged corresponding to the machine head. The lifting parts include a lifting cylinder for driving the machine head to lift vertically, a first lifting oil circuit respectively connected to the rodless chamber and the flow control assembly of the lifting cylinder, a second lifting oil circuit respectively connected to the rod chamber and the flow control assembly of the lifting cylinder, a lifting regulating valve arranged on the second lifting oil circuit for adjusting the flow of the second lifting oil circuit, and a lifting bidirectional lock respectively connected to the first lifting oil circuit and the second lifting oil circuit for locking the lifting cylinder.

[0012] Furthermore, the head support assembly includes two support members, which are arranged corresponding to the head. The support members include a support cylinder for driving the support shoe to move, a first support oil circuit respectively connected to the rodless chamber and the flow control assembly of the support oil cylinder, a second support oil circuit respectively connected to the rod chamber and the flow control assembly of the support oil cylinder, a support regulating valve arranged on the second support oil circuit for adjusting the flow of the second support oil circuit, and a support bidirectional lock respectively connected to the first support oil circuit and the second support oil circuit for locking the support oil cylinder.

[0013] Furthermore, the machine head deviation adjustment assembly includes two deviation adjustment parts, which are arranged corresponding to the machine head. The deviation adjustment parts include an deviation adjustment cylinder for driving the machine head to move left and right, a first deviation adjustment oil circuit respectively connected to the rodless chamber and the flow control assembly of the deviation adjustment cylinder, a second deviation adjustment oil circuit respectively connected to the rod chamber and the flow control assembly of the deviation adjustment cylinder, an deviation adjustment regulating valve arranged on the second deviation adjustment oil circuit for adjusting the flow of the second deviation adjustment oil circuit, and a deviation adjustment bidirectional lock respectively connected to the first deviation adjustment oil circuit and the second deviation adjustment oil circuit for locking the deviation adjustment cylinder.

[0014] Furthermore, the machine head pushing assembly includes two pushing members, which are arranged corresponding to the machine head. The pushing members include a pushing cylinder for driving the machine head and the telescopic frame to move relative to each other, a first pushing oil circuit respectively connected to the rodless chamber and the flow control assembly of the pushing cylinder, a second pushing oil circuit respectively connected to the rod chamber and the flow control assembly of the pushing cylinder, a pushing regulating valve arranged on the second pushing oil circuit for adjusting the flow of the second pushing oil circuit, and a pushing two-way lock respectively connected to the first pushing oil circuit and the second pushing oil circuit for locking the pushing cylinder.

[0015] Furthermore, the transfer filter assembly includes an oil filter element connected to the power source assembly and the flow direction control assembly respectively for conveying and filtering the emulsion, a safety valve connected to the oil filter element and the power source assembly respectively for controlling the system pressure within a set range, and an oil return element connected to the power source assembly and the flow direction control assembly respectively for reflowing the emulsion.

[0016] Furthermore, the infusion filter comprises an oil pipeline respectively connected to the power source component and the flow direction control component, a ball valve arranged on the oil pipeline for controlling the on-off of the oil pipeline, and a filtering structure arranged on the oil pipeline.

[0017] Furthermore, the filtering structure includes a processing unit for conveying the emulsion and filtering and decompressing the emulsion, a reflux unit connected to the oil return member, a reversing unit connected to the processing unit for controlling the flow direction of the emulsion in the processing unit, a unloading unit respectively connected to the input end and the reflux unit of the processing unit for unloading the processing unit, a decompression unit respectively connected to the output end and the reflux unit of the processing unit for decompressing the processing unit, and a filtering valve body that integrates the processing unit, the reflux unit, the reversing unit, the unloading unit and the decompression unit.

[0018] Furthermore, the flow direction control component includes a plurality of electro-hydraulic reversing valves arranged side by side.

[0019] Furthermore, the power source assembly includes an emulsion tank, an emulsion pump connected to the emulsion tank, and a drive motor connected to the emulsion pump.

[0020] The present invention has the following beneficial effects:

[0021] The emulsion control system for the telescopic belt conveyor of the present invention works through the power source component to provide and transmit the emulsion to the transmission filter component when the belt conveyor is telescopically controlled. The transmission filter component transmits the emulsion to the flow direction control component and filters the emulsion during the transmission process to prevent the micro-solid impurities in the emulsion from accumulating in the execution component; firstly, the telescopic frame is controlled to move, and the flow direction control component first controls the emulsion to flow into the machine head lifting component, and the machine head lifting component drives the machine head to descend vertically to contact the working surface, and then controls the emulsion to flow into the machine head supporting top component to drive the supporting shoe to abut against the top of the coal mining channel to increase the adhesion of the machine head, and then controls the emulsion to flow into the machine head pushing component, using the machine head as the fulcrum to realize driving the telescopic frame to move forward and backward relative to the machine head; then controls the movement of the machine head, and the flow direction control component first controls the emulsion to flow into the machine head supporting top component to bring the belt conveyor into contact with the working surface. The dynamic support shoe is separated from the top of the coal mining channel, and then the emulsion is controlled to flow into the machine head lifting assembly to drive the machine head to rise vertically, so that the machine head is away from the working face. Finally, the emulsion is controlled to flow into the machine head pushing assembly to drive the machine head to move forward and backward relative to the telescopic mechanism. In the process of the machine head movement, the emulsion is controlled to flow into the machine head deviation adjustment assembly to adjust the travel direction of the machine head to ensure that the overall travel direction does not shift. This scheme adopts emulsion as the working medium to control the relative movement of the telescopic frame and the machine head to achieve mechanical control of the telescopic belt conveyor. Compared with the existing technology, the telescopic mechanical control has high precision, which can enable the belt conveyor to quickly follow the coal mining equipment on the comprehensive mining working face, improve the coal mining efficiency, speed up the coal mining progress, and have high production efficiency. There is no need for close human participation in the whole process, with low safety risks, low labor intensity, and strong practicality. It is suitable for wide promotion and application.

[0022] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a control principle diagram of an emulsion control system for telescopic belt conveyor according to a preferred embodiment of the present invention.

[0025] Legend:

[0026] 10. Power source assembly; 21. Ball valve one; 22. Filter structure; 23. Safety valve; 24. Ball valve two; 30. Flow direction control assembly; 41. Lifting cylinder; 42. Lifting regulating valve; 43. Lifting two-way lock; 51. Top support cylinder; 52. Top support regulating valve; 53. Top support two-way lock; 61. Deviation adjustment cylinder; 62. Deviation adjustment valve; 63. Deviation adjustment two-way lock; 71. Sliding cylinder; 72. Sliding regulating valve; 73. Sliding two-way lock. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0028] like Figure 1 As shown, the emulsion control system for telescopic belt conveyor of this embodiment, the belt conveyor includes two heads and a telescopic frame arranged between the two heads, and the emulsion control system includes: a power source component 10, used to provide and transmit emulsion; a transmission and filtering component, connected to the power source component 10, used to transmit and filter the emulsion; a flow control component 30, connected to the transmission and filtering component, used to transmit and control the flow direction of the emulsion; a head lifting component, connected to the flow control component 30, used to drive the head to lift vertically, and then drive the head to approach or move away from the working surface; a head support component, connected to the flow control component 30, used to drive the support shoe to move, so as to increase or reduce the adhesion of the head, and then drive the telescopic frame to move relative to the head; a head deviation adjustment component, connected to the flow control component 30, used to drive the head to move left and right, so as to adjust the travel direction of the head; a head pushing component, connected to the flow control component 30, used to drive the telescopic frame to move forward and backward relative to the head, or drive the head to move forward and backward relative to the telescopic frame.

[0029] like Figure 1As shown, specifically, the emulsion control system for the telescopic belt conveyor of the present invention works through the power source component 10 to provide and transmit the emulsion to the transmission filter component when the belt conveyor is telescopically controlled. The transmission filter component transmits the emulsion to the flow control component 30, and filters the emulsion during the transmission process to prevent the accumulation of micro-solid impurities in the emulsion in the execution component; first, the telescopic frame is controlled to move, and the flow control component 30 first controls the emulsion to flow into the machine head lifting component, and the machine head lifting component drives the machine head to vertically descend to contact the working surface, and then controls the emulsion to flow into the machine head support component to drive the support shoe to abut against the top of the coal mining channel to increase the adhesion of the machine head, and then controls the emulsion to flow into the machine head pushing component, using the machine head as the fulcrum to drive the telescopic frame to move forward and backward relative to the machine head; then controls the movement of the machine head, and the flow control component 30 first controls the emulsion to flow into the machine head lifting component. The head support top assembly is used to drive the support shoe to separate from the top of the coal mining channel, and then the emulsion is controlled to flow into the machine head lifting assembly to drive the machine head to rise vertically, so that the machine head is away from the working face. Finally, the emulsion is controlled to flow into the machine head pushing assembly to drive the machine head to move forward and backward relative to the telescopic mechanism. In the process of the machine head movement, the emulsion is controlled to flow into the machine head deviation adjustment assembly to adjust the travel direction of the machine head to ensure that the overall travel direction does not shift. This scheme uses emulsion as the working medium to control the relative movement of the telescopic frame and the machine head to achieve mechanical control of the telescopic belt conveyor. Compared with the existing technology, the telescopic mechanical control has high accuracy, which can enable the belt conveyor to quickly follow the coal mining equipment on the comprehensive mining working face, thereby improving coal mining efficiency, accelerating coal mining progress, and having high production efficiency. In addition, the entire process does not require close human participation, has low safety risks, low labor intensity, and strong practicality, and is suitable for wide promotion and application.

[0030] It should be understood that in this embodiment, by using emulsion as the working medium to transmit power, the working efficiency and stability of the control system can be improved, while also reducing energy consumption and environmental pollution, effectively transmitting power and control signals, and protecting the control system from damage by oxidation and corrosion, thereby increasing the service life of the control system.

[0031] In this embodiment, the power source component 10 includes an emulsion tank, an emulsion pump connected to the emulsion tank, and a drive motor connected to the emulsion pump. Specifically, the emulsion tank stores the emulsion, and the drive motor drives the emulsion pump to work, so that the emulsion pump extracts and pumps the emulsion in the emulsion tank to transport the emulsion to the outside, thereby providing working power for each component of the control system.

[0032] like Figure 1As shown, in this embodiment, the transfer filter assembly includes an oil filter element connected to the power source assembly 10 and the flow control assembly 30 respectively for conveying and filtering the emulsion, a safety valve 23 connected to the oil filter element and the power source assembly 10 respectively for controlling the system pressure within a set range, and an oil return element connected to the power source assembly 10 and the flow control assembly 30 respectively for reflowing the emulsion.

[0033] like Figure 1 As shown, specifically, the emulsion is transported through the oil filter and the working power is also transmitted. During the transportation process, the emulsion is filtered to prevent subsequent components from being damaged due to impurities. At the same time, the pressure of the oil filter is regulated by the safety valve 23. When the pressure of the oil filter is within the set range, the safety valve 23 does not work; when the pressure of the oil filter exceeds the set range, the safety valve 23 works to allow the emulsion to flow back to the power source component 10, thereby ensuring the stability of the control system pressure; the emulsion after work is returned to the power source component 10 through the oil return component, thereby transmitting the working power through the circulation of the emulsion and realizing mechanical control of the extension and retraction of the belt conveyor.

[0034] like Figure 1 As shown, in this embodiment, the infusion filter comprises an oil pipeline connected to the power source assembly 10 and the flow control assembly 30 respectively, a ball valve 21 arranged on the oil pipeline for controlling the on and off of the oil pipeline, and a filter structure 22 arranged on the oil pipeline. Specifically, when performing telescopic control, the ball valve 21 controls the oil pipeline to be unblocked, and the emulsion pumped by the power source assembly 10 flows into the flow control assembly 30 through the oil pipeline, and is filtered by the filter structure 22 during the transportation process. When the control is stopped, the ball valve 21 closes the oil pipeline to avoid unnecessary losses caused by accidental control.

[0035] like Figure 1 As shown, optionally, the oil return member includes an oil return pipeline respectively connected to the power source assembly 10 and the flow control assembly 30 and a second ball valve 24 arranged on the oil return pipeline. Specifically, when performing telescopic control, the second ball valve 24 controls the return pipeline to be unobstructed, and the emulsion in the flow control assembly 30 can flow back to the power source assembly 10 through the return pipeline.

[0036] In this embodiment, the filtering structure 22 includes a processing unit for conveying the emulsion and filtering and decompressing the emulsion, a reflux unit connected to the oil return part, a reversing unit connected to the processing unit for controlling the flow direction of the emulsion in the processing unit, a unloading unit respectively connected to the input end and the reflux unit of the processing unit for unloading the processing unit, a decompression unit respectively connected to the output end and the reflux unit of the processing unit for decompressing the processing unit, and a filtering valve body that integrates the processing unit, the reflux unit, the reversing unit, the unloading unit and the decompression unit. Specifically, the processing unit, the reflux unit, the reversing unit, the unloading unit and the pressure reducing unit are integrated into a whole through the filter valve body to ensure that the overall size is small, so that it is suitable for the emulsion control system. The emulsion is filtered and processed by the processing unit, and the emulsion is transported to the flow control component 30. The flow direction of the emulsion in the processing unit is controlled by the reversing unit, so that the emulsion in the processing unit flows to the reflux unit, or flows into the flow control component 30, thereby filtering the emulsion and backwashing the processing unit to ensure the processing. The filtering effect of the unit; the processing unit can also perform decompression treatment on the emulsion, and when the pressure at the output end of the processing unit exceeds the set value, the emulsion in the processing unit is made to flow into the reflux unit through the decompression unit to decompress the processing unit, thereby reducing the pressure of the emulsion flowing from the processing unit into the branch, thereby achieving decompression of the subsequent oil circuit and avoiding damage to the components connected with the subsequent oil circuit due to excessive pressure; during maintenance, the emulsion in the processing unit is made to flow into the reflux unit through the unloading unit to unload the processing unit, thereby meeting the maintenance requirements.

[0037] Optionally, the processing unit includes a processing pipeline, a control valve 1, a filter 1 and a pressure reducing valve. The emulsion is transported through the processing pipeline and then flows through the filter 1 and the pressure reducing valve in sequence to be filtered and pressure reduced in sequence.

[0038] Optionally, the reversing unit includes a logic reversing valve arranged between control valve 1 and filter 1, a reversing pipeline respectively connected to filter 1 and the logic reversing valve, and a pilot control valve arranged on the reversing pipeline. Under normal working conditions, the pilot control valve does not work. At this time, the logic reversing valve is connected to ball valve 1 21 and filter 1, and the processing unit transports the emulsion to the flow control component 30; when filter 1 needs to be backwashed, control valve 1 is closed, the pilot control valve works, and the emulsion flows into the logic reversing valve through the reversing pipeline and the pilot control valve, so that the logic reversing valve is connected to filter 1 and the reflux unit, so that the emulsion in the processing pipeline flows back through filter 1 and then flows to the reflux unit through the logic reversing valve, thereby realizing backwashing of filter 1.

[0039] Optionally, the pressure reducing unit includes a pressure reducing pipeline respectively connected to the output end of the processing unit and the reflux unit, and a unloading valve arranged on the pressure reducing pipeline. Under normal conditions, the emulsion flowing into the pressure reducing pipeline is blocked by the unloading valve. When the pressure at the output end of the processing unit exceeds a set value, the unloading valve opens to allow the emulsion in the output end of the processing unit to flow into the reflux unit through the unloading valve, thereby achieving unloading and pressure reduction.

[0040] Optionally, the unloading component includes an unloading pipeline respectively connected to the input end of the processing unit and the reflux unit, and a control valve 2 arranged on the unloading pipeline. In the maintenance state, since the emulsion control system belongs to a constant pressure network, at this time, the control valve 1 is closed and the control valve 2 is opened, so that the emulsion flows into the reflux unit through the unloading pipeline and then into the oil return part, so that it can be disassembled for maintenance.

[0041] like Figure 1 As shown, in this embodiment, the flow control component 30 includes a plurality of electro-hydraulic reversing valves arranged side by side. Specifically, the plurality of power reversing valves work together to control the flow direction of the emulsion, and then during operation, the emulsion can be delivered to the corresponding component according to the working requirements.

[0042] like Figure 1 As shown, in this embodiment, the machine head lifting assembly includes two lifting parts, which are arranged corresponding to the machine head. The lifting parts include a lifting cylinder 41 for driving the machine head to lift vertically, a first lifting oil circuit respectively connected to the rodless chamber of the lifting cylinder 41 and the flow control assembly 30, a second lifting oil circuit respectively connected to the rod chamber of the lifting cylinder 41 and the flow control assembly 30, a lifting regulating valve 42 arranged on the second lifting oil circuit for adjusting the flow of the second lifting oil circuit, and a lifting bidirectional lock 43 respectively connected to the first lifting oil circuit and the second lifting oil circuit for locking the lifting cylinder 41.

[0043] It should be understood that, since the belt conveyor has two heads, the lifting and lowering control of the two heads are respectively achieved through two lifting members.

[0044] like Figure 1As shown, specifically, when the emulsion flows into the rodless cavity of the lifting cylinder 41 through the first lifting oil circuit, at this time, the emulsion in the rod cavity of the lifting cylinder 41 flows back to the flow control component 30 through the second lifting oil circuit, and the movable end of the lifting cylinder 41 extends to drive the machine head close to the working surface; when the emulsion flows into the rod cavity of the lifting cylinder 41 through the second lifting oil circuit, at this time, the emulsion in the rodless cavity of the lifting cylinder 41 flows back to the flow control component 30 through the first lifting oil circuit, and the movable end of the lifting cylinder 41 contracts to drive the machine head away from the working surface; and by adjusting the flow of the second lifting oil circuit by the lifting regulating valve 42, the extension and retraction speed of the movable end of the lifting oil circuit can be adjusted to improve the adjustment accuracy; when there is no need to perform lifting adjustment, the lifting two-way lock 43 works to avoid accidental startup of the machine head lifting component, which brings unnecessary harm during the working process.

[0045] like Figure 1 As shown, in this embodiment, the head support assembly includes two support members, which are arranged corresponding to the head. The support members include a support cylinder 51 for driving the support shoe to move, a first support oil circuit respectively connected to the rodless cavity of the support cylinder 51 and the flow control component 30, a second support oil circuit respectively connected to the rod cavity of the support cylinder 51 and the flow control component 30, a support regulating valve 52 arranged on the second support oil circuit for adjusting the flow of the second support oil circuit, and a support bidirectional lock 53 respectively connected to the first support oil circuit and the second support oil circuit for locking the support cylinder 51.

[0046] It should be understood that, since the belt conveyor has two heads, the two heads are respectively ensured to have sufficient adhesion through the two top supporting members.

[0047] like Figure 1 As shown, specifically, when the emulsion flows into the rodless cavity of the top supporting cylinder 51 through the first top supporting oil circuit, at this time, the emulsion in the rod cavity of the top supporting cylinder 51 flows back to the flow direction control component 30 through the second top supporting oil circuit, and the movable end of the top supporting cylinder 51 extends to drive the support shoe to press against the top of the coal mining channel; when the emulsion flows into the rod cavity of the top supporting cylinder 51 through the second top supporting oil circuit, at this time, the emulsion in the rodless cavity of the top supporting cylinder 51 flows back to the flow direction control component 30 through the first top supporting oil circuit, and the movable end of the top supporting cylinder 51 contracts to drive the support shoe away from the top of the coal mining channel; and by adjusting the flow of the second top supporting oil circuit by the top supporting regulating valve 52, the extension and retraction speed of the movable end of the top supporting oil circuit can be adjusted to improve the adjustment accuracy; when there is no need to perform top supporting adjustment, the top supporting two-way lock 53 works to avoid accidental startup of the head top supporting assembly, which may cause unnecessary harm during the working process.

[0048] like Figure 1As shown, in this embodiment, the machine head deviation adjustment assembly includes two deviation adjustment parts, which are arranged corresponding to the machine head. The deviation adjustment parts include an deviation adjustment cylinder 61 for driving the machine head to move left and right, a first deviation adjustment oil circuit respectively connected to the rodless chamber of the deviation adjustment cylinder 61 and the flow control assembly 30, a second deviation adjustment oil circuit respectively connected to the rod chamber of the deviation adjustment cylinder 61 and the flow control assembly 30, an deviation adjustment regulating valve 62 arranged on the second deviation adjustment oil circuit for adjusting the flow of the second deviation adjustment oil circuit, and a deviation adjustment bidirectional lock 63 respectively connected to the first deviation adjustment oil circuit and the second deviation adjustment oil circuit for locking the deviation adjustment cylinder 61.

[0049] It should be understood that, since the belt conveyor has two heads, the travel directions of the two heads are controlled respectively by two deviation adjusting members.

[0050] like Figure 1 As shown, optionally, in one embodiment, the head deviation adjustment assembly includes four deviation adjustment parts, and the four adjustment pieces are arranged in a rectangular shape.

[0051] like Figure 1 As shown, specifically, when the emulsion flows into the rodless cavity of the deviation adjusting cylinder 61 through the first deviation adjusting oil circuit, at this time, the emulsion in the rod cavity of the deviation adjusting cylinder 61 flows back to the flow control component 30 through the second deviation adjusting oil circuit, and the movable end of the deviation adjusting cylinder 61 extends to adjust the machine head to move in the first direction; when the emulsion flows into the rod cavity of the deviation adjusting cylinder 61 through the second deviation adjusting oil circuit, at this time, the emulsion in the rodless cavity of the deviation adjusting cylinder 61 flows back to the flow control component 30 through the first deviation adjusting oil circuit, and the movable end of the deviation adjusting cylinder 61 contracts to drive the machine head to move in the second direction; and by adjusting the flow of the second deviation adjusting oil circuit by the deviation adjusting regulating valve 62, the extension and retraction speed of the movable end of the deviation adjusting oil circuit can be adjusted to improve the adjustment accuracy; when there is no need to perform deviation adjustment, the deviation adjustment two-way lock 63 works to avoid accidental startup of the machine head deviation adjustment component, which brings unnecessary harm during the working process.

[0052] It should be understood that the head deviation adjustment assembly is connected to the corresponding head deviation adjustment mechanism on the belt conveyor so as to adjust the head deviation adjustment mechanism and thus adjust the travel direction of the head.

[0053] like Figure 1 As shown, in this embodiment, the machine head pushing assembly includes two pushing members, which are arranged corresponding to the machine head. The pushing members include a pushing cylinder 71 for driving the machine head and the telescopic frame to move relative to each other, a first pushing oil circuit respectively connected to the rodless cavity of the pushing cylinder 71 and the flow control assembly 30, a second pushing oil circuit respectively connected to the rod cavity of the pushing cylinder 71 and the flow control assembly 30, a pushing regulating valve 72 arranged on the second pushing oil circuit for adjusting the flow of the second pushing oil circuit, and a pushing two-way lock 73 respectively connected to the first pushing oil circuit and the second pushing oil circuit for locking the pushing cylinder 71.

[0054] It should be understood that, since the belt conveyor has two heads, the relative movement of the two heads and the telescopic frame is achieved through two pushing members, so as to increase the pushing force and ensure stable operation.

[0055] like Figure 1 As shown, specifically, when the emulsion flows into the rodless cavity of the push cylinder 71 through the first push oil circuit, at this time, the emulsion in the rod cavity of the push cylinder 71 flows back to the flow control component 30 through the second push oil circuit, and the movable end of the push cylinder 71 extends to adjust the machine head to move in the first direction; when the emulsion flows into the rod cavity of the push cylinder 71 through the second push oil circuit, at this time, the emulsion in the rodless cavity of the push cylinder 71 flows back to the flow control component 30 through the first push oil circuit, and the movable end of the push cylinder 71 contracts to drive the machine head to move in the second direction; and by adjusting the flow of the second push oil circuit by the push regulating valve 72, the extension and retraction speed of the movable end of the push oil circuit can be adjusted to improve the adjustment accuracy; when there is no need for push adjustment, the push two-way lock 73 works to avoid accidental startup of the machine head push component, which brings unnecessary harm during the working process.

[0056] like Figure 1 As shown, in this embodiment, the working principle of the emulsion control system is:

[0057] Open ball valve 1 21 and ball valve 2 24, drive the motor to drive the emulsion pump to work, and then extract the emulsion from the emulsion tank and transport it to the oil pipeline. After the emulsion flows through ball valve 1 21, filter structure 22 and safety valve 23, it is divided into two paths, one path flows into the control system, and the other path is blocked by safety valve 23. When the pressure of the oil pipeline is within the set range, the safety valve 23 does not work. When the oil pipeline exceeds the set range, the safety valve 23 works, and the emulsion flows into the emulsion tank through the safety valve 23 to ensure the stability of the control system pressure.

[0058] The electro-hydraulic reversing valve works to control the emulsion to flow into the first lifting oil circuit, and then enter the rodless cavity of the lifting cylinder 41 after flowing through the lifting two-way lock 43, so that the machine head contacts the working surface; then the emulsion is controlled to flow into the first top supporting oil circuit, and enter the rodless cavity of the top supporting cylinder 51 after flowing through the top supporting two-way lock 53, so that the support shoe can be extended and contact with the top of the coal mining working surface, ensuring that the machine head has sufficient adhesion to remain stable; after the above actions are completed, the emulsion is controlled to flow into the machine head pushing assembly, and enter the rodless cavity of the pushing cylinder 71 after flowing through the pushing two-way lock 73, so as to drive the telescopic frame to move forward, and stop after moving to the set working position.

[0059] The electro-hydraulic reversing valve works to control the emulsion to flow into the second top supporting oil circuit, and then enter the rod chamber of the top supporting cylinder 51 after flowing through the top supporting two-way lock 53, so as to retract the supporting shoe; then the emulsion is controlled to flow into the second lifting oil circuit, and then enter the rod chamber of the lifting cylinder 41 after flowing through the lifting two-way lock 43, so as to separate the machine head from the working surface; after the above actions are completed, the emulsion is controlled to flow into the machine head pushing assembly to drive the machine head to move forward.

[0060] When the telescopic frame or the head is moved backward, the opposite operation can be performed, so no further details will be given.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An emulsion control system for telescopic belt conveyor, the belt conveyor comprising two heads and a telescopic frame arranged between the two heads, characterized in that: Emulsion control system includes: A power source assembly (10) for providing and transmitting an emulsion; A transfer and filtering component connected to the power source component (10) and used for transferring and filtering the emulsion; A flow direction control component (30) connected to the transmission and filtering component, used for transmitting and controlling the flow direction of the emulsion; A machine head lifting assembly is connected to the flow direction control assembly (30) and is used to drive the machine head to lift vertically, thereby driving the machine head to approach or move away from the working surface; The head support assembly is connected to the flow direction control assembly (30) and is used to drive the support shoe to move so as to increase or reduce the adhesion of the head, thereby driving the telescopic frame to move relative to the head; The machine head deviation adjustment component is connected to the flow direction control component (30) and is used to drive the machine head to move left and right to adjust the travel direction of the machine head; The head pushing component is connected to the flow direction control component (30) and is used to drive the telescopic frame to move forward and backward relative to the head, or to drive the head to move forward and backward relative to the telescopic frame.

2. The emulsion control system for belt conveyor extension and retraction according to claim 1, characterized in that: The machine head lifting assembly includes two lifting parts, which are arranged corresponding to the machine head. The lifting parts include a lifting cylinder (41) for driving the machine head to lift vertically, a first lifting oil circuit respectively connected to the rodless chamber of the lifting cylinder (41) and the flow control component (30), a second lifting oil circuit respectively connected to the rod chamber of the lifting cylinder (41) and the flow control component (30), a lifting regulating valve (42) arranged on the second lifting oil circuit for adjusting the flow of the second lifting oil circuit, and a lifting bidirectional lock (43) respectively connected to the first lifting oil circuit and the second lifting oil circuit for locking the lifting cylinder (41).

3. The emulsion control system for belt conveyor extension and retraction according to claim 1, characterized in that: The machine head supporting assembly comprises two supporting members, which are arranged corresponding to the machine head, and the supporting members comprise a supporting oil cylinder (51) for driving the supporting shoe to move, a first supporting oil circuit respectively connected to the rodless cavity of the supporting oil cylinder (51) and the flow control component (30), a second supporting oil circuit respectively connected to the rod cavity of the supporting oil cylinder (51) and the flow control component (30), a supporting regulating valve (52) arranged on the second supporting oil circuit for regulating the flow of the second supporting oil circuit, and a supporting bidirectional lock (53) respectively connected to the first supporting oil circuit and the second supporting oil circuit for locking the supporting oil cylinder (51).

4. The emulsion control system for belt conveyor extension and retraction according to claim 1, characterized in that: The machine head deviation adjustment component includes two deviation adjustment parts, which are arranged corresponding to the machine head. The deviation adjustment parts include a deviation adjustment cylinder (61) for driving the machine head to move left and right, a first deviation adjustment oil circuit respectively connected to the rodless chamber of the deviation adjustment cylinder (61) and the flow control component (30), a second deviation adjustment oil circuit respectively connected to the rod chamber of the deviation adjustment cylinder (61) and the flow control component (30), a deviation adjustment regulating valve (62) arranged on the second deviation adjustment oil circuit for adjusting the flow of the second deviation adjustment oil circuit, and a deviation adjustment bidirectional lock (63) respectively connected to the first deviation adjustment oil circuit and the second deviation adjustment oil circuit for locking the deviation adjustment cylinder (61).

5. The emulsion control system for belt conveyor extension and retraction according to claim 1, characterized in that: The machine head pushing assembly comprises two pushing members, which are arranged corresponding to the machine head. The pushing members comprise a pushing cylinder (71) for driving the machine head and the telescopic frame to move relative to each other, a first pushing oil circuit respectively connected to the rodless chamber of the pushing oil cylinder (71) and the flow control assembly (30), a second pushing oil circuit respectively connected to the rod chamber of the pushing oil cylinder (71) and the flow control assembly (30), a pushing regulating valve (72) arranged on the second pushing oil circuit for regulating the flow of the second pushing oil circuit, and a pushing bidirectional lock (73) respectively connected to the first pushing oil circuit and the second pushing oil circuit for locking the pushing oil cylinder (71).

6. The emulsion control system for belt conveyor telescopic operation according to any one of claims 1 to 5, characterized in that: The transmission filter assembly comprises an oil delivery filter element connected to the power source assembly (10) and the flow direction control assembly (30) for delivering and filtering the emulsion, a safety valve (23) connected to the oil delivery filter element and the power source assembly (10) for controlling the system pressure within a set range, and an oil return element connected to the power source assembly (10) and the flow direction control assembly (30) for returning the emulsion.

7. The emulsion control system for belt conveyor extension and retraction according to claim 6, characterized in that: The liquid infusion filter comprises an oil pipeline respectively connected to a power source component (10) and a flow direction control component (30), a ball valve (21) arranged on the oil pipeline for controlling the on-off of the oil pipeline, and a filtering structure (22) arranged on the oil pipeline.

8. The emulsion control system for belt conveyor extension and retraction according to claim 7, characterized in that: The filtering structure (22) comprises a processing unit for conveying an emulsion and filtering and decompressing the emulsion, a reflux unit connected to an oil return member, a reversing unit connected to the processing unit for controlling the flow direction of the emulsion in the processing unit, a unloading unit connected to an input end of the processing unit and a reflux unit for unloading the processing unit, a decompression unit connected to an output end of the processing unit and a reflux unit for decompressing the processing unit, and a filtering valve body on which the processing unit, the reflux unit, the reversing unit, the unloading unit and the decompression unit are integrally mounted.

9. The emulsion control system for belt conveyor telescopic operation according to any one of claims 1 to 5, characterized in that: The flow direction control component (30) comprises a plurality of electro-hydraulic reversing valves arranged side by side.

10. The emulsion control system for belt conveyor extension and retraction according to any one of claims 1 to 5, characterized in that: The power source component (10) comprises an emulsion tank, an emulsion pump connected to the emulsion tank, and a drive motor connected to the emulsion pump.

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