CN216966821U

CN216966821U - Coal-winning machine cylinder maintenance upset platform

Info

Publication number: CN216966821U
Application number: CN202220671689.0U
Authority: CN
Inventors: 牛国亮
Original assignee: Shanxi Xinkunlong Technology Co ltd
Current assignee: Shanxi Xinkunlong Technology Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-15
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a maintenance overturning platform for a coal mining machine roller, belongs to the field of coal mining machine manufacturing, particularly relates to overhaul work after the coal mining machine roller is damaged, and mainly solves the problems that the existing coal mining machine roller has low maintenance efficiency and the quality cannot be ensured. The overturning platform is connected with a connecting rod mechanism through a hinge shaft, and the connecting rod mechanism is connected with the lifting oil cylinder. The hydraulic station provides driving force to realize the extension and contraction of the lifting oil cylinder and the rotation of the hydraulic motor. The utility model has good safety and reliability, can effectively reduce the safety accident of overturning the roller by a travelling crane, lightens the labor intensity of workers, improves the maintenance quality of the roller and ensures the normal operation of the roller of the coal mining machine in work.

Description

Coal-winning machine cylinder maintenance upset platform

Technical Field

The utility model belongs to the field of coal mine machinery manufacturing, relates to a cutting system of a coal mining machine, and particularly relates to a roller maintenance overturning platform of the coal mining machine.

Background

The existing roller overhaul method for the coal mining machine is generally characterized in that a travelling crane is manually matched to turn over on a factory floor, and the existing roller overhaul method is characterized in that the overhaul operation is carried out on an operation platform which can be manually rotated on a simple platform.

In general, as long as the roller is not seriously damaged, the roller is simply welded and the wear-resistant layer is repaired, and the simple platform can finish the roller repairing work. But when the drum damage is severe, for example: most toothholders fracture, guide plate excessive wear etc. need carry out the complex situation of changing, adopt the floor operation or when simple and easy platform overhaul operation, because the upset number of times is many, the cutting welding area position angle is changeable, leads to workman intensity of labour high, and the operating efficiency is low, and can not effectively guarantee the quality after the overhaul.

Therefore, how to provide a roller overhaul platform which can be light and fast rotated and can be randomly adjusted at any time according to the required angle of roller overhaul operation so as to improve the working environment of workers, improve the safety coefficient and the working efficiency, improve the product quality and ensure stable and reliable operation is a technical problem which needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a roller maintenance overturning platform of a coal mining machine, which is characterized in that the overturning platform is arranged, a hydraulic lifting connecting rod mechanism is arranged below the platform, maintenance stations suitable for rollers with different specifications are arranged above the platform, a central shaft is arranged on the maintenance stations and driven by a hydraulic motor, the connecting rod mechanism and the hydraulic motor are controlled by the hydraulic station together, and a measurement detection device is arranged on one side of the platform.

In order to achieve the aim, the utility model provides a roller maintenance overturning platform of a coal mining machine, which is characterized by comprising a base, wherein the overturning platform is connected to the base through a hinge shaft, a maintenance station is arranged on the overturning platform, a platform central shaft is arranged at the central position of the maintenance station, a square head convenient for being connected and fixed with a roller is arranged on the platform central shaft, a hydraulic motor is connected below the platform central shaft and arranged at the bottom of the overturning platform, a measurement detection device is arranged at one side of the overturning platform and used for detecting the position of a roller where a pick box is arranged, a link mechanism for driving the platform to overturn is arranged below the overturning platform, the link mechanism is driven by hydraulic pressure, and the overturning platform further comprises a hydraulic station.

Through setting up the frame and setting up the upset platform on the frame, platform center pin and hydraulic motor are equipped with on the upset platform, be equipped with on the platform center pin can with be repaiied the convenient square head of being connected fixedly of cylinder, make things convenient for fixed cylinder, it is rotatory through hydraulic motor, can drive center pin, square head and cylinder uniformly to convenient select reasonable position and angle when the overhaul operation, set up simultaneously and measure detection device and detect the mounted position of cylinder pick, link mechanism controls the rotation angle of upset platform, the hydraulic pressure station makes the motion as actuating system drive hydraulic motor and link mechanism.

Furthermore, the base is of an L-shaped structure, a transverse plate of the base is fixedly connected to the ground and is connected with a connecting rod structure, and a longitudinal plate of the base is connected with the overturning platform through a hinge shaft. The frame is set to be L-shaped, the overturning platform and the frame can be separated by a distance, a connecting rod mechanism is arranged between the overturning platform and the frame, and meanwhile, the overturning platform can be conveniently overturned by 90 degrees.

Furthermore, the turnover platform is provided with maintenance stations suitable for rollers of different specifications, and the maintenance stations comprise large station mounting holes and small station mounting holes. The maintenance of the rollers of different specifications is adapted, and the manufacturing cost of the platform is reduced.

Further, measure detection device and set up in the outside of the vertical board of frame, including flexible graduated flask and scale, the scale setting is on the top of flexible graduated flask, and can move flexible graduated flask relatively, the vertical pole of flexible graduated flask relatively moves, can follow vertical state simultaneously and remove upset to the horizontality. The telescopic measuring rod is in a vertical state when in use, can rotate 90 degrees around a rotating shaft on the base when not in use, is horizontally placed on the side face of the base, and the scale is arranged at the top end of the telescopic measuring rod and used for measuring and determining the angle and the position of the cutting pick and the diameter of the roller.

Furthermore, a limiting device is arranged on the telescopic measuring rod. After the telescopic measuring rod is moved from the vertical position to the horizontal position, the telescopic measuring rod is fixed by the limiting device, and the telescopic measuring rod is prevented from moving.

Further, link mechanism includes main connecting rod, vice connecting rod and lift cylinder, main connecting rod and lift cylinder all connect on the horizontal board of frame through deciding the joint, and vice connecting rod is connected at main connecting rod's end, and the other end of vice connecting rod is connected in the bottom of upset platform, and lift cylinder's piston rod end is connected in the intermediate position of main connecting rod, and above-mentioned connected mode all adopts round pin axle articulated mode. The connecting rod mechanism controls the overturning platform to overturn, when the lifting oil cylinder extends out, the overturning platform rises around the center of the hinge shaft to rotate, the platform rotates at any angle from the horizontal to the vertical, and after the platform is lifted to a proper angle, the roller can be maintained.

Furthermore, an oil return filter is arranged in the hydraulic station to filter hydraulic oil, and a bidirectional hydraulic lock is arranged on the lifting oil cylinder loop. The oil return filter ensures that oil entering the oil pump valve group and the pressure cavity is clean, and the bidirectional hydraulic lock can effectively prevent the lifting oil cylinder from accidentally descending after the lifting oil cylinder reaches a specified position and is fixed, so that safety accidents are avoided.

The utility model has the advantages of simple structure and easy manufacture, effectively reduces safety accidents and quality accidents during working, can effectively control the dimensional precision, the strength of welding seams and guarantee quality, is flexible and convenient to adjust angles and rotate, effectively reduces the defects of tooth base falling, guide plate cracking and the like caused by welding quality, and ensures that the roller can safely, stably and normally work when cutting underground.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a shearer drum maintenance turnover platform provided in the present invention;

FIG. 2 is a side view of the roll-over platform rotated to a vertical position;

fig. 3 is a schematic diagram of the operation of the hydraulic station.

Wherein: 1. a machine base; 2. a telescopic measuring rod; 3. a limiting device; 4. overturning the platform; 5. a scale; 6. a drum; 7. a square head; 8. a platform central axis; 9. a lift cylinder; 10. an auxiliary connecting rod; 11. a hydraulic motor; 12. a main link; 13. fixing a joint; 14. a hinge shaft; 15. a large station mounting hole; 16. a small station mounting hole; 17. a hydraulic station; 101. an oil absorption filter; 102. an oil pump; 103. a motor; 104. a pressure regulating overflow valve; 105. an oil return filter; 106. a pressure gauge; 107. an oil cylinder operating valve; 108. a motor operated valve; 109. an oil return pressure gauge; 110. a bidirectional hydraulic lock; 111. an oil tank; 112. an adjustable throttle valve; 113. an electric cabinet; 114. a cooler.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the full hydraulic turnover platform for overhaul of the coal mining machine roller comprises a base 1, a turnover platform 4, a telescopic measuring rod 2 and a fixed joint 13, wherein the turnover platform 4, the telescopic measuring rod 2 and the fixed joint 13 are arranged on the base, the base 1 is of an L-shaped structure, a transverse plate of the base 1 is connected and fixed on the ground, a longitudinal plate of the base 1 is connected with the turnover platform 4 through a hinge shaft 14, the turnover platform 4 is provided with maintenance stations suitable for rollers of different specifications and comprises a large station installation hole 15 and a small station installation hole 16, a platform central shaft 8 and a hydraulic motor 11 are arranged on the two maintenance stations, the platform central shaft 8 is provided with a square head 7 which can be conveniently connected and fixed with the repaired roller, the platform central shaft 8, the square head 7 and the roller 6 can be uniformly driven to rotate through the rotation of the hydraulic motor 11, the turnover platform 4 is provided with a connecting rod mechanism for driving the platform to turn over and comprises a main connecting rod 12, The lifting machine comprises an auxiliary connecting rod 10 and a lifting oil cylinder 9, wherein the main connecting rod 12 and the lifting oil cylinder 9 are connected to a transverse plate of the machine base 1 through a fixed joint 13, and a hydraulic station 17 for providing driving force for the lifting oil cylinder 9 and a hydraulic motor 11 is arranged beside the overturning platform 4.

Further, still be provided with in one side of upset platform and measure detection device, measure detection device and set up in the outside of the vertical board of frame 1, including flexible graduated flask 2 and scale 5, scale 5 sets up on the top of flexible graduated flask 2, and can move flexible graduated flask 2 relatively, flexible graduated flask 2 can move vertically of frame 1 relatively, can follow vertical state rotation to horizontality simultaneously.

When the maintenance cylinder, arrange required maintenance cylinder 6 in on upset platform 4, select different station mounting holes according to cylinder specification size, then through platform center pin 8 and square head 7, be connected fixedly with upset platform 4 with the bolt, cylinder 6 is placed fixed back, will stretch out and draw back graduated flask 2 by horizontal position rotation to vertical position, fix with stop device 3, adjust flexible graduated flask 2 and scale 5, confirm the angle of pick, after position and diameter size accord with technical requirement, it is fixed to spot weld. When the welding is reinforced, the limiting device of the telescopic measuring rod 2 is loosened, and the telescopic measuring rod 2 is rotated to the horizontal position. The hydraulic station 17 is started, the hydraulic station 17 drives the lifting oil cylinder 9 to drive the overturning platform 4 to overturn around the center of the hinge shaft 14, different overturning angle adjustments can be carried out according to the maintenance requirements, the maximum overturning angle can reach 90 degrees, meanwhile, the hydraulic station 17 drives the hydraulic motor 11 to drive the platform center shaft 8 and the maintained roller 6 to rotate, different plane adjustments of the roller 6 guide plate can be in a basically horizontal state, and the roller 6 can be maintained in multiple directions and multiple angles.

Further, the present invention provides the hydraulic driving force of the lift cylinder 9 and the hydraulic motor 11 by using the hydraulic station 17, as shown in fig. 3, wherein the hydraulic station 17 includes: an oil suction filter 101, an oil pump 102, a motor 103, a pressure regulating overflow valve 104 and an oil return filter 105; the working pressure gauge 106, the oil cylinder operating valve 107, the motor operating valve 108, the oil return pressure gauge 109, the bidirectional hydraulic lock 110, the oil tank 111, the adjustable throttle valve 112, the electric cabinet 113 and the cooler 114, and the working principle is as follows:

the hydraulic station is provided with an electric cabinet 113 for controlling the system in the whole hydraulic station 17, hydraulic oil is used as a transmission medium and stored in an oil tank 111, the motor 103 is used as power to drive the oil pump 102 to rotate, the rotational kinetic energy of the motor 103 is converted into the pressure driving function of the hydraulic oil, the lifting oil cylinder 9 is pushed to do linear motion and the hydraulic motor 11 is pushed to do rotational motion, and stepless speed regulation can be realized between 0 and rated speed.

The hydraulic station 17 divides the pressure oil output by the oil pump 102 into two paths, wherein one path is used for the extension and contraction of the lifting oil cylinder 9 to push the overturning platform 4 to be lifted to 90 degrees and to be lowered to the horizontal position, and any angle required can be adjusted in the range according to the actual operation requirement. The other path is used for driving the hydraulic motor 11 to rotate so as to drive the central shaft of the platform to rotate. The space positions of the roller 6 at different angles of inclination, horizontal and vertical can be conveniently adjusted, and the cutting and welding operations at different angles and positions of the tooth holder are convenient.

The oil suction pipe is provided with an oil suction filter 101 for filtering impurities in oil to ensure cleanness of the oil entering the oil pump valve bank and the pressure cavity, the pressure regulating overflow valve 104 is provided with a pressure gauge 106 for regulating the output pressure of the oil pump 102, and regulating the pressure and various pressure values in the working process. The pressure-regulating overflow valve 104 timely releases redundant pressure when the working machine is unloaded and static through the indication of the pressure gauge 106, and the system is protected from overload and damage. A loop of a lifting oil cylinder 9 on the overturning platform 4 is provided with a bidirectional hydraulic lock 110 so as to control the overturning platform 4 not to fall freely to cause accidents after stopping the operation of an oil pump 102 during the tilting operation, and an oil cylinder operating valve 107 is arranged in front of the bidirectional hydraulic lock 110 so as to control the lifting speed of the lifting oil cylinder 9; a bidirectional adjustable throttle valve 112 is arranged on the oil path of the hydraulic motor 11, and the required flow and the motor rotation speed can be obtained by adjusting the adjustable throttle valve 112. Meanwhile, the speed of the hydraulic motor 11 can be adjusted by operating the motor control valve 108 to reach the speed and the rotation angle required by the rotation of the roller 6, the oil return filter 105 and the oil return pressure gauge 109 are arranged in the oil return system, when the oil return is normal and smooth, the oil return pressure gauge 109 indicates that the position is lower or close to 0, when the oil return is polluted and the oil return filter 105 is not smooth or blocked, the indicated value of the oil return pressure on the oil return pressure gauge 109 is increased, which indicates that the oil return filter 105 is not smooth, and the oil return filter needs to be cleaned and replaced in time to ensure the normal work of the hydraulic station 17. Meanwhile, a cooler 114 is arranged on the oil return pipeline, so that the temperature of hydraulic oil can be cooled, and the normal work of the hydraulic station 17 is guaranteed.

Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that the utility model has been described in detail with reference to preferred embodiments, and that those skilled in the art will be able to understand that all modifications and equivalent arrangements not described in detail in the embodiment of the utility model are within the scope of the appended claims.

Claims

1. A maintenance and turnover platform for a roller of a coal mining machine is characterized by comprising a machine base (1), the overturning platform (4) is connected on the machine base (1) through a hinge shaft (14), a maintenance station is arranged on the overturning platform (4), a platform central shaft (8) is arranged at the central position of the maintenance station, a square head (7) which is convenient to be connected and fixed with the roller (6) is arranged on the platform central shaft (8), a hydraulic motor (11) is connected below the platform central shaft (8), the hydraulic motor (11) is arranged at the bottom of the overturning platform (4), a measurement and detection device is arranged at one side of the overturning platform (4), the position of the roller (6) is detected, a connecting rod mechanism for driving the platform to overturn is arranged below the overturning platform (4), the link mechanism is driven by hydraulic pressure, and the overturning platform (4) further comprises a hydraulic station (17).

2. The roller maintenance turnover platform of the coal mining machine as claimed in claim 1, characterized in that the machine base (1) is of an L-shaped structure, the transverse plates of the machine base (1) are fixedly connected to the ground and are connected with a connecting rod structure, and the longitudinal plates of the machine base (1) are connected with the turnover platform (4) through hinge shafts (14).

3. The roller maintenance turning platform for the coal mining machine as claimed in claim 1, characterized in that maintenance stations suitable for rollers (6) of different specifications are arranged on the turning platform (4) and comprise large station mounting holes (15) and small station mounting holes (16).

4. The roller maintenance turnover platform of the coal mining machine as claimed in claim 2, wherein the measurement detection device is arranged outside a longitudinal plate of the base (1) and comprises a telescopic measuring rod (2) and a scale (5), the scale (5) is arranged at the top end of the telescopic measuring rod (2) and can move relative to the telescopic measuring rod (2), and the telescopic measuring rod (2) can move relative to the longitudinal rod of the base (1) and can move from a vertical state to a horizontal state.

5. The shearer drum maintenance turning platform according to claim 4, characterized in that the telescopic metering rod (2) is provided with a limiting device (3).

6. The turnover platform for maintaining the drum of the coal mining machine according to claim 2, wherein the link mechanism comprises a main link (12), an auxiliary link (10) and a lift cylinder (9), the main link (12) and the lift cylinder (9) are connected to a transverse plate of the machine base (1) through a fixed joint (13), the auxiliary link (10) is connected to the tail end of the main link (12), the other end of the auxiliary link (10) is connected to the bottom of the turnover platform (4), the end of a piston rod of the lift cylinder (9) is connected to the middle position of the main link (12), and the connection modes are all pin connection modes.

7. The shearer drum maintenance turning platform according to claim 6, characterized in that an oil return filter (105) is provided in the hydraulic station (17) to filter hydraulic oil, while a bi-directional hydraulic lock (110) is provided on the lift cylinder (9) circuit.