A hydraulic support side direction moving platform

Abstract

This invention relates to the field of mining equipment technology, specifically to a hydraulic support lateral movement platform. The platform includes a base plate located at the working face inside the mine, and a translation unit. The base plate is equipped with a translation unit for moving the hydraulic support to be installed from the working face to the installation location. A fixing unit is also provided on the translation unit for securing the moving hydraulic support. An auxiliary movement unit is also provided on the translation unit to prevent excessive shear load on the translation unit. This invention utilizes the coordinated movement of hydraulic cylinders and slide rails, with the top plate sliding based on the base plate. This allows the hydraulic support to be installed to slide smoothly and safely from the working face to the installation location on the top plate. Jacks and limit blocks on the top plate stably fix the hydraulic support on the top plate during its movement, further ensuring the safety and stability of the hydraulic support's movement and transportation.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, specifically to a hydraulic support lateral movement platform. Background Technology

[0002] Hydraulic supports are an important component of fully mechanized mining equipment. They reliably and effectively support and control the roof of the working face, isolate the goaf, and prevent gangue from entering the longwall face and the advance conveyor.

[0003] Hydraulic supports are used in multiple parallel rows to form the roof of the working face for support and control. When installing hydraulic supports, the hydraulic supports to be installed need to be moved closer to the already installed hydraulic supports in sequence inside the mine.

[0004] To prevent collisions during installation that could cause hydraulic supports to overturn and result in production accidents, a safety distance of more than 2 meters must be maintained between the hydraulic supports and the installation location after they are transported to the work site by a transport vehicle or gantry crane. Existing technology requires the use of single-pillar lateral support to move the hydraulic supports from the work site to the installation location by operating a transverse support from a distance. This not only involves high labor intensity and high operational risks, but also carries the risk of the hydraulic supports overturning.

[0005] To address this, a hydraulic support lateral movement platform is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a hydraulic support lateral movement platform. Through the coordinated movement of hydraulic cylinders and slide rails, the top plate slides on the base plate. Jacks and limit blocks set on the top plate can stably fix the hydraulic support on the top plate during the movement of the hydraulic support driven by the top plate. This allows the hydraulic support to be installed to slide smoothly and safely from the working surface to the installation location on the top plate, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A hydraulic support lateral movement platform, comprising:

[0009] The working face inside the mine is equipped with a floor slab.

[0010] Also includes:

[0011] Translation unit, the base plate is provided with a translation unit for moving the hydraulic support to be installed from the working surface to the installation location;

[0012] The translation unit is equipped with a fixing unit for fixing the moving hydraulic support;

[0013] An auxiliary moving unit is provided on the translation unit to assist the translation unit in translation.

[0014] Preferably, the translation unit includes a chute-type slide rail, and slide rails are installed on both sides of the top surface of the base plate. The two slide rails are slidably mounted on the top plate. The sliding part of the top plate is flat and its length is the same as the length of the chute. Hydraulic rods are installed on both side walls of the base plate, and the other ends of the two hydraulic rods are respectively connected to the two sides of the top plate.

[0015] The base plate is fixed at the working surface, the top plate supports the hydraulic support to be installed, the hydraulic rod provides the power for sliding between the top and base plates, and the slide rail structure reduces the degree of freedom of translation between the top and base plates, making the translation between the top and base plates more linear and smooth, and also reducing the axial shear force of the hydraulic rod.

[0016] Preferably, the fixing unit includes a crossbeam mounted on the top plate. The crossbeam is mounted on the side of the top plate that is not connected to the hydraulic rod. The crossbeam is provided with an installation tube parallel to the axis of the hydraulic rod. A jack is provided inside the installation tube. A limiting block is provided on the side of the top plate that is not connected to the hydraulic rod or the crossbeam. The jack and the hydraulic rod share a set of oil pumps, and the oil supply priority of the jack is higher than that of the hydraulic rod.

[0017] The hydraulic support to be installed is placed on the top plate and transported by the sliding movement of the top plate. The jack pushes the hydraulic support on the top plate to the limit block, clamping and fixing the hydraulic support. The jack and the hydraulic rod share a set of oil pumps to avoid the need for an additional power source, reducing the cost of research and development and material management. The oil supply priority of the jack is higher than that of the hydraulic rod. The hydraulic rod will not be activated until the hydraulic support has been fully pushed to the limit block, that is, before the hydraulic support is fixed, reducing the probability of the hydraulic support sliding and becoming unbalanced during movement.

[0018] Preferably, the auxiliary moving unit includes load wheels, and multiple load wheels are installed at the bottom of the top plate.

[0019] Hydraulic supports are heavy, often weighing several tons to tens of tons. The roof supports the hydraulic supports and slides. When the roof extends beyond the base plate under the push of the hydraulic rods, the part of the roof extending beyond the base plate, the contact point between the roof and the slide rail, and the overlapping part of the roof and the slide rail form a lever with the contact point between the roof and the slide rail as the hinge point. This increases the load on the slide rail. The load rollers can contact the ground when the roof extends beyond the base plate to support the roof and reduce the load on the slide rail. The position, number, and size of the load rollers can be determined according to geological conditions. For example, in mines with softer geology, large-diameter and wide load rollers are needed to prevent the load rollers from sinking. In mines with harder geology, smaller and narrower load rollers can reduce equipment costs and reduce friction between the load rollers and the ground, thereby reducing the pressure on the hydraulic rods.

[0020] Preferably, the hydraulic rod is connected to both the base plate and the top plate by a rotatable hinge. A fixing block 1 is fixedly installed on the top plate, and a rotating shaft 1 is rotatably installed on the fixing block 1. A fork rod 1 is fixedly installed at the other end of the rotating shaft 1, and the fork rod 1 is connected to one end of the hydraulic rod. A fixing block 2 is fixedly installed on the base plate, and a rotating shaft 2 is rotatably installed on the fixing block 2. A fork rod 2 is fixedly installed at the other end of the rotating shaft 2, and the fork rod 2 is connected to the other end of the hydraulic rod.

[0021] To ensure smooth sliding, there is a certain gap between the sliding part of the top plate and the slide rail. As the top plate gradually slides away from the bottom plate, the part of the top plate extending out of the bottom plate, the contact point between the top plate and the slide rail, and the overlapping part of the top plate and the slide rail form a force-adding lever with the contact point between the top plate and the slide rail as the hinge point. The top plate and the bottom plate will also undergo a certain degree of elastic deformation due to the large load. Since the hydraulic rod cannot withstand lateral shear load, the hinged connection between the hydraulic rod and the bottom plate and the top plate can provide the hydraulic rod with a certain range of motion, reduce the lateral shear force on the hydraulic rod, and ensure the safe use of the hydraulic rod.

[0022] Preferably, the sliding part of the top plate that cooperates with the slide rail is a sliding pivot, the width of the top plate is less than the distance between the two slide rails, and the top plate is provided with a sliding pivot extending from both sides of the top plate near the crossbeam. The diameter of the sliding pivot is 0.02 mm smaller than the width of the slide rail.

[0023] When the sliding part of the top plate and the slide rail is a sliding shaft, the top plate can rotate at a certain angle around the sliding shaft as the rotation center, thanks to the extension and retraction of the hydraulic rod and the hinge structure between the hydraulic rod and the bottom plate and the top plate. The top plate and the slide rail form a structure similar to a sliding bearing. The diameter of the sliding shaft is 0.02 mm smaller than the width of the slide rail. 0.02 mm is the standard clearance for sliding bearings. If the clearance is too large, it is difficult for an oil film to form, making it difficult to ensure the machine's operating accuracy and causing severe vibration. If the clearance is too small, excessive friction can easily cause the machine to get stuck in the slide rail.

[0024] Preferably, both the top plate and the bottom plate are interlocking structures with multiple notches on the splicing surfaces of the top plate and the bottom plate. Each notch is fitted with an insert plate, the thickness of which is half the thickness of the splicing surface material, the area of ​​which is twice the size of the notch, and the protruding shape of the insert plate is consistent with the shape of the notch. Each insert plate has multiple mounting holes.

[0025] The top and bottom plates are made of multiple panels. Without changing the top and bottom plates on the left and right sides, only adding different numbers or replacing the middle inserts of different widths can adjust the width of the top and bottom plates to meet the handling needs of hydraulic supports of different sizes and models. After the insert-type splicing structure is completed, the multiple panels fit tightly together and the thickness at the splicing position is consistent, which is beneficial for the arrangement of other equipment and components.

[0026] Preferably, the top plate is equipped with a sensor for monitoring the tilt angle of the top plate, and the sensor is electrically connected to the oil pump of the hydraulic rod.

[0027] Because the roof supports the hydraulic supports, when the geological conditions inside the mine are unstable, even with the auxiliary support of load wheels, the load wheels exert great pressure on the ground due to the large weight of the hydraulic supports and the small bearing area of ​​the load wheels. The load wheels are prone to sinking, and the roof is prone to tilting at an angle exceeding the safe range. When the tilt angle of the roof is too large, there is a risk of the hydraulic supports overturning. The sensor is used to detect the tilt angle during the movement of the roof. When the tilt angle of the roof is too large, the sensor sends a signal to remind the workers and stop the movement of the hydraulic rods.

[0028] Preferably, a lubrication system is provided on the two slide rails. The lubrication system includes multiple oil holes vertically opened on the top wall of the two slide rails. A pressurized oil chamber is provided on the top of the two slide rails and connected to each oil hole. The switch of the pressurized oil chamber and the switch of the hydraulic rod are electrically connected.

[0029] The lubrication system is used to lubricate the sliding motion between the top plate and the slide rail. On the one hand, it protects the sliding structure of the top plate and the slide rail from oxidation and corrosion. On the other hand, it lubricates the sliding structure of the top plate and the slide rail, forming an oil film similar to that of a sliding bearing, reducing sliding friction, reducing the pressure of the hydraulic rod, and making the sliding of the top plate smoother. This prevents the top plate from getting stuck during movement, which could cause the hydraulic support on the top plate to tilt.

[0030] The switch for the pressurized oil tank and the switch for the hydraulic rod are electrically connected. The oil tank can be opened intermittently when the hydraulic rod is started, spraying lubricating materials such as grease onto the surface of the sliding structure between the top plate and the slide rail.

[0031] Preferably, a brush-type baffle is installed on one side of the slide rail groove, and the bristles of the baffle are vertically oriented from top to bottom.

[0032] Brush-type baffles prevent debris from entering the track chute during operation. When the roof is not passing over the baffle, the bristles form a barrier separating the inside and outside of the track chute. As the roof passes over the baffle, the bristles are pushed aside, and the baffle does not affect the roof's movement. The bristles also clean the roof, absorbing some lubricant. When the bristles come into contact with the moving roof, they further enhance the lubrication between the roof and the track.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] 1. The top plate and bottom plate move in coordination with the hydraulic cylinder and slide rail. The top plate slides on the bottom plate as a base, allowing the hydraulic support to be installed to slide smoothly and safely from the working surface to the installation location. The jacks and limit blocks set on the top plate can stably fix the hydraulic support on the top plate during the movement of the hydraulic support driven by the top plate, further ensuring the safety and stability of the hydraulic support movement and transportation.

[0035] 2. The hydraulic rods are connected to the base plate and the top plate by rotating hinges, which allows the hydraulic rods to have a certain degree of movement at the hinge points, reducing the lateral shear force on the hydraulic rods. Combined with the lubrication system on the slide rails, this makes the sliding of the top plate smoother, preventing friction-induced jamming during the movement of the top plate and reducing the possibility of inertial tilting of the hydraulic supports on the top plate due to movement jamming.

[0036] 3. Two sliding structures are provided. When the sliding part of the roof plate is flat, it only needs to be used with a small number of ordinary load wheels, which can be applied in mine environments with flat and hard geological conditions. The overall equipment cost is low, and the movement of the roof plate is efficient and stable. When the sliding part of the roof plate is a pivot type, it is used with hydraulic rods and a hinged connection between the roof plate and the bottom plate. It can be used in geological conditions with poor hardness and rigidity, or when there is a certain angle between the mine bottom wall and the bottom plate. It is used with a large number of widened load wheels, and the overall equipment cost is higher. Under the action of hydraulic rods, the roof plate can also slowly pass under the support of the load wheels. The sensor continuously detects the tilt angle of the roof plate until the hydraulic support is transported to the designated position. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0038] Figure 2 for Figure 1 Enlarged view of part A;

[0039] Figure 3 This is a structural diagram showing that the base plates are all of a plug-in splicing structure.

[0040] Figure 4 This is a schematic diagram of the load wheel's operation.

[0041] Figure 5 Diagram showing the working range of the sliding shaft of the top plate;

[0042] Figure 6 This is a schematic diagram of the sliding pivot structure of the top plate.

[0043] In the diagram: 1. Base plate; 2. Top plate; 3. Slide rail; 4. Hydraulic rod; 5. Crossbeam; 6. Mounting pipe; 7. Jack; 8. Limiting block; 9. Load wheel; 10. Fixing block one; 11. Rotating shaft one; 12. Fork rod one; 13. Fixing block two; 14. Rotating shaft two; 15. Fork rod two; 16. Sliding rotating shaft; 17. Notch; 18. Insert plate; 19. Mounting hole; 20. Sensor; 21. Oil hole; 22. Curtain; 23. Hydraulic support. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be further described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, and not all embodiments. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0045] Working principle of the invention: The top plate 2 and the bottom plate 1 move in coordination with the hydraulic cylinder and the slide rail 3. The top plate 2 slides on the bottom plate 1. The jack 7 and the limiting block 8 set on the top plate 2 can stably fix the hydraulic support 23 on the top plate 2 during the movement of the top plate 2 and drive the hydraulic support 23. This allows the hydraulic support 23 to be installed to slide smoothly and safely from the working surface to the installation location on the top plate 2.

[0046] Please see Figures 1 to 6 This invention provides a hydraulic support lateral movement platform, the technical solution of which is as follows:

[0047] Before use, determine the specific form of the sliding part of the roof plate 2 and the type of the load wheel 9 according to the geological conditions. The roof plate 2 and the bottom plate 1 are spliced ​​together by the plug-in splicing structure, and the roof plate 2 and the bottom plate 1 are fixed as a whole by using countersunk bolts through the mounting holes 19. Then, the bottom plate 1 is fixed to the ground inside the mine. The hydraulic support 23 to be installed is placed on the roof plate 2. The equipment is started, and the oil pumps of the hydraulic rod 4 and the jack 7 are started. Since the oil supply priority of the jack 7 is higher than that of the hydraulic rod 4, the jack 7 extends and pushes the hydraulic support 23 until the hydraulic support 23 is pushed against the limit block 8 of the roof plate 2.

[0048] Example 1:

[0049] Working conditions: The ground inside the mine is relatively flat and has good bearing capacity.

[0050] Equipment conditions: The sliding part of the top plate 2 is a flat plate type, using a small-diameter, low-width load wheel 9, and limiting the alarm value of the sensor 20 to the stress yield point of the top plate 2 material, generally 3 to 5 degrees.

[0051] Specific usage:

[0052] After the hydraulic support 23 is fixed by the jack 7 and the limiting block 8, the oil pump starts to supply oil to the hydraulic rod 4. The hydraulic rod 4 extends, causing the roof plate 2 to gradually slide away from the bottom plate 1. Since the ground inside the mine is relatively flat and has good bearing capacity, the load wheel 9 on the roof plate 2 gradually contacts the ground and shares the weight of the hydraulic support 23 with the sliding part of the roof plate 2. Even if the ground is slightly uneven, the elasticity of the roof plate 2 itself can compensate for the displacement of the uneven parts. The rotating shaft 11 and the rotating shaft 2 14 will also rotate at a certain angle, so that the load direction on the hydraulic rod 4 is the same as the extension and retraction direction of the hydraulic rod 4, thus ensuring that the hydraulic rod 4 always only bears axial load, reducing the lateral shear load on the hydraulic rod 4. The hydraulic rod 4 continues to extend, holding The top plate 2 continues to slide until it reaches the set position and then automatically stops. Because the switch of the pressurized oil tank and the switch of the hydraulic rod 4 are electrically connected, the oil tank can be opened intermittently when the hydraulic rod 4 is started, intermittently spraying lubricating materials such as grease onto the sliding structure surface of the top plate 2 and the slide rail 3. If the ground is dented by the load wheel 9 due to excessive load during the movement, the sliding part of the top plate 2 is flat at this time, and the allowable deformation angle of the top plate 2 is small and cannot exceed the stress yield point of the top plate 2 material. Otherwise, the top plate 2 material will undergo permanent plastic deformation and fail. When the tilt angle of the top plate 2 exceeds the set value, the sensor 20 sends a signal to remind the operator and stops the action of the hydraulic rod 4. The operator can then carry out subsequent emergency handling according to the actual situation.

[0053] Example 2:

[0054] Working conditions: The ground inside the mine is relatively rugged and has poor bearing capacity.

[0055] Equipment conditions: The sliding part of the top plate 2 is a pivot shape, using a large-diameter and wide load wheel 9, limiting the alarm value of the sensor 20 to the critical angle at which the hydraulic support 23 tilts from the top plate 2, generally 15 to 20 degrees.

[0056] Specific usage instructions:

[0057] After the hydraulic support 23 is fixed by the jack 7 and the limiting block 8, the oil pump starts to supply oil to the hydraulic rod 4. The hydraulic rod 4 extends, causing the top plate 2 to gradually slide away from the bottom plate 1. During this process, the load wheel 9 on the top plate 2 will continue to contact the ground. Compared with the first embodiment, a larger diameter and wider load wheel 9 is used at this time. At this time, the load wheel 9 and the sliding part of the top plate 2 jointly bear the weight of the hydraulic support 23, resulting in less pressure on the ground and making it more difficult to collapse. The sliding grooves of the top plate 2 and the bottom plate 1 form a hinged structure. When the hydraulic rod 4 pushes the top plate 2, even if the ground is relatively rough, the top plate 2 can rotate at a certain angle around the sliding pivot 16 in the slide rail 3 to bypass obstacles. During this period, pivot 11 and pivot 2 14 will also rotate. A certain angle of rotation makes the load direction of the hydraulic rod 4 the same as the extension and retraction direction of the hydraulic rod 4, so that the hydraulic rod 4 always only bears axial load, reducing the lateral shear load on the hydraulic rod 4. The hydraulic rod 4 continues to extend, continuously driving the top plate 2 to slide until the top plate 2 slides to the set position and then automatically stops. Since the switch of the pressurized oil tank and the switch of the hydraulic rod 4 are electrically connected, the oil tank can be opened intermittently when the hydraulic rod 4 is started, intermittently spraying lubricating materials such as grease onto the sliding structure surface of the top plate 2 and the slide rail 3. If the load wheel 9 climbs or falls beyond the set tilting critical angle during the movement, the sensor 20 sends a signal to remind the operator and stops the action of the hydraulic rod 4. The operator can then carry out subsequent emergency handling according to the actual situation.

Claims

1. A hydraulic support side orientation mobile platform, comprising: The base plate (1) is provided on the working face inside the mine; characterized in that it further includes: a translation unit, wherein the base plate (1) is provided with a translation unit for moving the hydraulic support (23) to be installed from the working face to the installation location; a fixing unit, wherein the translation unit is provided with a fixing unit for fixing the moving hydraulic support (23); and an auxiliary movement unit, wherein the translation unit is provided with an auxiliary movement unit for preventing the shear load of the translation unit from being too large. The translation unit includes a grooved slide rail (3). Both sides of the top surface of the base plate (1) are equipped with grooved slide rails (3). The two grooved slide rails (3) are slidably mounted on the top plate (2). The sliding part of the top plate (2) is the same length as the groove of the grooved slide rail (3). Hydraulic rods (4) are installed on both sides of the base plate (1). The other ends of the two hydraulic rods (4) are respectively connected to the two sides of the top plate (2). The hydraulic rod (4) is connected to the bottom plate (1) and the top plate (2) by a rotating hinge. A fixing block (10) is installed on the top plate (2). A rotating shaft (11) is rotatably installed on the fixing block (10). A fork rod (12) is fixedly installed at the other end of the rotating shaft (11). The fork rod (12) is connected to one end of the hydraulic rod (4). A fixing block (13) is installed on the bottom plate (1). A rotating shaft (14) is rotatably installed on the fixing block (13). A fork rod (15) is fixedly installed at the other end of the rotating shaft (14). The fork rod (15) is connected to the other end of the hydraulic rod (4). The sliding part of the top plate (2) that cooperates with the sliding rail (3) is a sliding pivot (16). The width of the top plate (2) is less than the distance between the two sliding rails (3). The top plate (2) is provided with a sliding pivot (16) extending from both sides of the top plate (2) on the side near the crossbeam (5). The diameter of the sliding pivot (16) is 0.02 mm smaller than the width of the sliding rail (3). The top plate (2) and the bottom plate (1) are both plug-in splicing structures. The splicing surfaces of the top plate (2) and the bottom plate (1) are provided with multiple notches (17). Each notch (17) is equipped with a plug plate (18). The thickness of the plug plate (18) is half the thickness of the splicing surface material. The area of ​​the plug plate (18) is twice that of the notch (17). The protruding shape of the plug plate (18) is consistent with the shape of the notch (17). Each plug plate (18) is provided with multiple mounting holes (19).

2. The hydraulic support side direction moving platform according to claim 1, characterized in that: The fixing unit includes a crossbeam (5) installed on the top plate (2). The crossbeam (5) is installed on one side of the top plate (2) where the hydraulic rod (4) is not connected. The crossbeam (5) is provided with an installation pipe (6) parallel to the axis of the hydraulic rod (4). A jack (7) is provided inside the installation pipe (6). A limiting block (8) is provided on one side of the top plate (2) where the hydraulic rod (4) or the crossbeam (5) is not connected. The jack (7) and the hydraulic rod (4) share an oil pump, and the oil supply priority of the jack (7) is higher than that of the hydraulic rod (4).

3. The hydraulic support side direction moving platform according to claim 1, characterized in that: The auxiliary moving unit includes load wheels (9), and multiple load wheels (9) are fixedly installed on the bottom of the top plate (2), with the lowest point of the load wheels (9) being flush with the bottom wall of the bottom plate (1).

4. The hydraulic support side direction moving platform according to claim 1, characterized in that: The top plate (2) is equipped with a sensor (20) for monitoring the tilt angle of the top plate (2), and the sensor (20) is electrically connected to the oil pump of the hydraulic rod (4).

5. The hydraulic support side direction moving platform according to claim 1, characterized in that: A lubrication system is provided on the two grooved slide rails (3). The lubrication system includes multiple oil holes (21) vertically opened on the top wall of the two grooved slide rails (3). A pressurized oil chamber is provided on the top of the two grooved slide rails (3) and connected to each oil hole (21). The switch of the pressurized oil chamber is electrically connected to the switch of the hydraulic rod (4).

6. The hydraulic support side direction moving platform according to claim 1, characterized in that: A brush-type curtain (22) is installed on one side of the groove-type slide rail (3) in the groove direction, and the bristles of the brush-type curtain (22) are vertical from top to bottom.

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