Hydraulic support deformed side guard plate retracting device and method for retrieving deformed or severely deformed side guard plates

Abstract

The present invention relates to a hydraulic support deformed side guard plate retracting device and a method for retrieving deformed or severely deformed side guard plates. To fill the gap in the prior art, the hydraulic support deformed side guard plate retracting device comprises a bearing base, two height adjustment jacks, two side push jacks and two top push plates, the bearing base is fixed to the tunnel roof through a lifting anchor rod, and suspension columns and hinged seats are respectively provided on both sides of the bearing base, and the suspension columns are provided with multiple pin holes, the upper ends of the two height adjustment jacks are hinged to the two hinged seats through horizontal axes, the cylinder bodies of the two side push jacks are hinged to the lower ends of the two height adjustment jacks, the two top push plates are respectively fixed to the piston rods of the side push jacks, and the cylinder body roots of the side push jacks are respectively fixed to the suspension columns, and the two height adjustment jacks and the side push jacks are respectively connected to the outlet pipe of the underground high-pressure emulsion pump through a hydraulic operating valve. The present invention can conveniently recycle deformed or severely deformed side guard plates, facilitate the transportation and lifting of hydraulic supports, and is suitable for use underground in coal mines.

Description

Technical Field

[0001] The invention relates to a hydraulic support deformed side guard plate retrieving device and a method for retrieving deformed or severely deformed side guard plates. Background Art

[0002] During the coal production process, the hydraulic supports of the fully-mechanized working face of coal mines are prone to deformation of the side guard plates of some hydraulic supports and cannot be retracted due to the harsh underground environment, improper human operation, periodic pressure from the roof, etc. When the working face is removed, if the side guard plates of the hydraulic supports cannot be retracted, it will directly cause the supports to be too wide to be loaded, transported, or lifted, which seriously restricts the progress of the removal construction.

[0003] At present, the side guard plates are mainly pushed by a single jack and retracted by a hand winch. When they cannot be retracted, the side guard plates are removed manually. Using a single jack to push the side guard plates can easily damage the support strength of the two sides of the tunnel, and the single jack is easy to collapse; using a winch to pull can easily cause the winch chain to break, which is a high risk factor; the manual removal of the side guard plates is labor-intensive and has poor safety. Therefore, the existing technology urgently needs a safe and efficient side guard plate forced retraction device. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to fill the above-mentioned gap in the prior art and provide a hydraulic support deformed side guard plate retracting device and a method for retracting deformed or severely deformed side guard plates.

[0005] In order to solve the above technical problems, the hydraulic support deformable side guard plate retracting device includes a bearing base, two height-adjusting jacks, two side push jacks and two push plates. The bearing base is fixed on the matching tunnel top plate through a lifting anchor rod. Two vertical suspension columns are arranged on the bearing base. A plurality of pin holes are sequentially opened on the suspension columns from top to bottom. Two hinged seats are also arranged on the bearing base between the two suspension columns. The upper ends of the two height-adjusting jacks are hinged on the two hinged seats through horizontal axes. The cylinders of the two side push jacks are hinged on the lower ends of the two height-adjusting jacks through horizontal axes one by one. The two push plates are fixed on the outer ends of the piston rods of the two side push jacks one by one. The cylinder roots of the two side push jacks are respectively fixed on a fixed sleeve through a horizontal axis hinge. The two fixed sleeves are respectively sleeved on two suspension columns. Each fixed sleeve has a pin hole. The pin hole on the fixed sleeve coincides with a pin hole on the suspension column, and a pin shaft is also penetrated to achieve fixation. The two height adjustment jacks and the two side push jacks are respectively connected to the outlet pipe of the underground high-pressure emulsion pump through the hydraulic operating valve. All horizontal axes are perpendicular to the longitudinal vertical bisector of the bearing base. With this design, the side guard plate that cannot be normally retracted due to deformation can be pressed back to the top plate of the hydraulic support with the help of the jack.

[0006] As an optimization, the two push plates are respectively provided with two hinged ear plates, each of which has a through hole, and the outer ends of the piston rods of the two side push jacks have hinged holes, which are hinged with the through holes on the hinged ear plates through a horizontal axis. This design facilitates the fit between the push plate and the side guard plate.

[0007] As an optimization, a reinforcing diagonal rod is further provided between the suspension column and the bearing base, and the reinforcing diagonal rod and the suspension column and the bearing base connected thereto form a tripod structure, and two pin holes are provided on each fixing sleeve, and a pin shaft is passed through each pin hole. With this design, the suspension column and the bearing base are more firmly connected and not easily deformed.

[0008] The method for recovering a deformed side guard plate of the present invention comprises the following steps:

[0009] ①. Drag the hydraulic support with deformed side guard plate withdrawn from the working surface to the bottom of the aforementioned hydraulic support deformed side guard plate retracting device by a winch;

[0010] ②. Adjust the two fixing sleeves to the height corresponding to the side guard plate to be recovered, align the pin hole on the fixing sleeve with the nearest pin hole on the suspension column, and fix them together with the pin shaft, and then adjust the two height adjustment jacks to keep the two side push jacks level;

[0011] ③. Start the two side push jacks at the same time, so that the push plates at the front end of their piston rods push the opposite side guard plates from both sides at the same time, and press the guard plates on both sides into the normal retracted position.

[0012] This design is suitable for recycling side guards with medium to slight deformation.

[0013] The method for recovering a severely deformed side guard plate of the present invention comprises the following steps:

[0014] ①. Drag the hydraulic support with deformed side guard plate withdrawn from the working surface to the bottom of the aforementioned hydraulic support deformed side guard plate retracting device by a winch;

[0015] ②. Adjust the two fixing sleeves to the height corresponding to the side guard plate to be recovered, align the pin hole on the fixing sleeve with the nearest pin hole on the suspension column, and fix them together with the pin shaft, and then adjust the two height adjustment jacks to keep the two side push jacks level;

[0016] ③. Start the two side push jacks at the same time, so that the push plates at the front end of their piston rods push the opposite side guard plates from both sides at the same time.

[0017] When the side guard plate is blocked from retracting or tends to deform more severely, it is handled in two situations: 1. If the outer part of the plug plate of the side guard plate is bent downward, the hydraulic operating valve is operated while the two side push jacks are started to contract the height adjustment jacks on the same side, thereby applying an upward pulling force to the corresponding side guard plate until the guard plates on both sides are pressed into a normal retracted position; 2. If the outer part of the plug plate of the side guard plate is bent upward, the hydraulic operating valve is operated while the two side push jacks are started to extend the height adjustment jacks on the same side, thereby applying downward pressure to the corresponding side guard plate to guide the side guard plate to retract.

[0018] The side guard plate is severely deformed and cannot retract normally, which is mainly manifested by the downward bending of the plug plate (a few are bent upward). If it is squeezed from both sides to the middle, it may cause more serious deformation. In this design, when the side push jack is started to squeeze the middle, the jack is raised, and a downward pressure or upward pulling force is applied to it according to the bending and deformation of the plug plate of the side guard plate to guide the bending part to recover so that the side push jack can press the side guard plate back into the top plate of the hydraulic rack.

[0019] The hydraulic support deformed side guard plate retracting device and the method for retrieving deformed or severely deformed side guard plates of the present invention can conveniently recycle deformed or severely deformed side guard plates, facilitate the transportation and hoisting of the hydraulic support, and are suitable for use in underground coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a further description of the device for recovering the deformed side guard plate of the hydraulic support and the method for recovering the deformed or severely deformed side guard plate of the present invention in conjunction with the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the use status of the deformable side guard plate retracting device of the hydraulic support (I);

[0022] Figure 2 This is a schematic diagram of the use status of the deformable side guard plate retracting device of the hydraulic support (II);

[0023] Figure 3 This is a schematic diagram of the use status of the deformable side guard plate retracting device of the hydraulic support (III).

[0024] In the figure: 1 is a bearing base, 2 is a height adjustment jack, 3 is a side push jack, 4 is a push plate, 5 is a lifting anchor rod, 6 is a tunnel roof, 7 is a suspension column, 8 is a pin hole, 9 is an articulated seat, 10 is a horizontal axis, 11 is a fixed sleeve, 12 is a pin shaft, 13 is a hydraulic operating valve, 14 is a downhole high-pressure emulsion pump, 15 is an articulated ear plate, 16 is a reinforcing diagonal rod, 17 is a side guard plate, 171 is a plug plate, and 18 is a hydraulic support. DETAILED DESCRIPTION

[0025] Implementation method 1: Figures 1 to 3As shown, the hydraulic support deformable side guard plate retracting device includes a bearing base 1, two height-adjusting jacks 2, two side push jacks 3 and two push plates 4. The bearing base 1 is fixed on the matching tunnel top plate 6 through a lifting anchor rod 5. The bearing base 1 is provided with two vertical suspension columns 7. The suspension columns 7 are sequentially provided with a plurality of pin holes 8 from top to bottom. The bearing base 1 between the two suspension columns 7 is also provided with two hinged seats 9. The upper ends of the two height-adjusting jacks 2 are hinged on the two hinged seats 9 through a horizontal shaft 10. The cylinders of the two side push jacks 3 are hinged on the lower ends of the two height-adjusting jacks 2 through the horizontal shaft 10 one by one. The two push plates 4 The outer ends of the piston rods of the two side thrust jacks 3 are fixed one by one, and the roots of the cylinders of the two side thrust jacks 3 are respectively hinged and fixed on a fixing sleeve 11 through a horizontal axis 10. The two fixing sleeves 11 are respectively sleeved on the two suspension columns 7. Each fixing sleeve 11 is provided with a pin hole 8, and the pin hole 8 on the fixing sleeve 11 coincides with a pin hole 8 on the suspension column 7, and a pin shaft 12 is also penetrated to achieve fixation. The two height adjustment jacks 2 and the two side thrust jacks 3 are respectively connected to the outlet pipe of the underground high-pressure emulsion pump 14 through the hydraulic operating valve 13, and all the horizontal axes 10 are perpendicular to the longitudinal vertical bisector of the bearing base 1.

[0026] Figure 1-3 Only two pins 12 are drawn in each figure, and the remaining pins 12 are omitted in the figure, and the pins 12 are all "T"-shaped pins. The arrows in the figure indicate the running direction of the height adjustment jack 2 or the side push jack 3.

[0027] The two push plates 3 are respectively provided with two hinged ear plates 15, each hinged ear plate 15 has a through hole, and the outer ends of the piston rods of the two side thrust jacks 3 are provided with hinged holes, which are hinged together with the through holes on the hinged ear plates 15 through the horizontal axis 10.

[0028] A reinforcing diagonal rod 16 is further provided between the suspension column 7 and the bearing base 1. The reinforcing diagonal rod 16 and the suspension column 7 and the bearing base 1 connected thereto form a tripod structure. Two pin holes 8 are formed on each fixing sleeve 11, and a pin shaft 12 is passed through each pin hole 8.

[0029] The method for recovering a deformed side guard plate of the present invention comprises the following steps:

[0030] ① will be withdrawn from the working surface, the side guard plate 17 deformed hydraulic support 18, with a winch (not shown) to the bottom of the hydraulic support deformation side guard plate retracting device described in embodiment 1;

[0031] ②. Adjust the two fixing sleeves 11 to the corresponding height of the side guard plate 17 to be recovered, align the pin hole 8 on the fixing sleeve 11 with the nearest pin hole 8 on the suspension column 7, and fix them together with the pin shaft 12, and then adjust the two height adjustment jacks 2 to keep the two side push jacks 3 level;

[0032] ③. Simultaneously start the two side push jacks 3, so that the push plates 4 at the front end of their piston rods push the side guard plates 17 opposite to them from both sides at the same time, and press the guard plates 17 on both sides into the normal retracted position. Figure 1 shown.

[0033] The method for recovering a severely deformed side guard plate of the present invention comprises the following steps:

[0034] ① will be withdrawn from the working surface, the side guard plate 17 deformed hydraulic support 18, with a winch (not shown) to the bottom of the hydraulic support deformation side guard plate retracting device described in embodiment 1;

[0035] ②. Adjust the two fixing sleeves 11 to the corresponding height of the side guard plate 17 to be recovered, align the pin hole 8 on the fixing sleeve 11 with the nearest pin hole 8 on the suspension column 7, and fix them together with the pin shaft 12, and then adjust the two height adjustment jacks 2 to keep the two side push jacks 3 level;

[0036] ③. Simultaneously start the two side push jacks 3, so that the push plates 4 at the front end of their piston rods push the opposite side guard plates 17 from both sides at the same time.

[0037] When the side guard plate 17 is blocked from retracting or tends to deform more, two situations are handled: 1. If the outer part of the plug plate 171 of the side guard plate 17 is bent downward, while starting the two side push jacks 3, the hydraulic operating valve 13 is operated to shrink the height adjustment jack 2 on the same side, so as to apply an upward pulling force to the corresponding side guard plate 17, such as Figure 2 As shown, until the two side guard plates 17 are pressed into the normal retracted position.

[0038] 2. If the outer side of the insert plate 171 of the side guard plate 17 is bent upward, then while starting the two side push jacks 3, the hydraulic operating valve 13 is operated to extend the height adjustment jack 12 on the same side, thereby applying downward pressure to the corresponding side guard plate 17, such as Figure 3 As shown, the guide side guard plate 17 is retracted.

Claims

1. A hydraulic support deformable side guard plate retracting device, characterized in that: It includes a bearing base, two height-adjusting jacks, two side-thrust jacks and two push plates. The bearing base is fixed on the matching tunnel roof through a lifting anchor rod. Two vertical suspension columns are arranged on the bearing base. A plurality of pin holes are sequentially opened on the suspension columns from top to bottom. Two hinged seats are also arranged on the bearing base between the two suspension columns. The upper ends of the two height-adjusting jacks are hinged on the two hinged seats through horizontal axes. The cylinders of the two side-thrust jacks are hinged on the lower ends of the two height-adjusting jacks through horizontal axes one by one. The two push plates are fixed one by one. The outer ends of the piston rods of the two side thrust jacks are fixed, and the roots of the cylinders of the two side thrust jacks are respectively hinged and fixed on a fixing sleeve through a horizontal axis. The two fixing sleeves are respectively sleeved on two suspension columns. Each fixing sleeve is provided with a pin hole, and the pin hole on the fixing sleeve coincides with a pin hole on the suspension column, and a pin shaft is also penetrated at the same time to achieve fixation. The two height adjustment jacks and the two side thrust jacks are respectively connected to the outlet pipe of the high-pressure emulsion pump used underground through a hydraulic operating valve, and all horizontal axes are perpendicular to the longitudinal vertical bisector of the bearing base.

2. The hydraulic support deformable side guard plate retracting device according to claim 1 is characterized in that: The two push plates are respectively provided with two hinged ear plates, each of which is provided with a through hole, and the outer ends of the piston rods of the two side push jacks are provided with hinged holes, which are hinged with the through holes on the hinged ear plates through a horizontal axis.

3. The hydraulic support deformable side guard plate retracting device according to claim 1 is characterized in that: A reinforcing diagonal rod is also arranged between the suspension column and the bearing base. The reinforcing diagonal rod and the suspension column and the bearing base connected therewith form a tripod structure. Two pin holes are opened on each fixing sleeve, and a pin shaft is penetrated in each pin hole.

4. A method for recovering a deformed side guard plate, comprising the following steps: ①. The hydraulic support with deformed side guard plates withdrawn from the working surface is towed by a winch to the bottom of the hydraulic support deformed side guard plate retracting device according to any one of claims 1 to 3; ②. Adjust the two fixing sleeves to the height corresponding to the side guard plate to be recovered, and align the pin hole on the pin fixing sleeve with the nearest pin hole on the suspension column, and fix them together with the pin, and then adjust the two height adjustment jacks to keep the two side push jacks level; ③. Start the two side push jacks at the same time, so that the push plates at the front end of their piston rods push the opposite side guard plates from both sides at the same time, and press the guard plates on both sides into the normal retracted position.

5. A method for recovering a severely deformed side guard plate, comprising the following steps: ①. The hydraulic support with deformed side guard plates withdrawn from the working surface is towed by a winch to the bottom of the hydraulic support deformed side guard plate retracting device according to any one of claims 1 to 3; ②. Adjust the two fixing sleeves to the height corresponding to the side guard plate to be recovered, and align the pin hole on the pin fixing sleeve with the nearest pin hole on the suspension column, and fix them together with the pin, and then adjust the two height adjustment jacks to keep the two side push jacks level; ③. Start the two side push jacks at the same time, so that the push plates at the front end of their piston rods push the opposite side guard plates from both sides at the same time. When the side guard plate is blocked from retracting or tends to deform more severely, it is handled in two situations:

1. If the outer part of the plug plate of the side guard plate is bent downward, the hydraulic operating valve is operated while the two side push jacks are started to contract the height adjustment jacks on the same side, thereby applying an upward pulling force to the corresponding side guard plate until the guard plates on both sides are pressed into a normal retracted position; 2. If the outer part of the plug plate of the side guard plate is bent upward, the hydraulic operating valve is operated while the two side push jacks are started to extend the height adjustment jacks on the same side, thereby applying downward pressure to the corresponding side guard plate to guide the side guard plate to retract.

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