Hydraulic support with anti-skid, early warning and automatic inclination adjusting functions

Abstract

The invention relates to the field of coal mining, in particular to a hydraulic support with anti-skid, early warning and automatic inclination adjusting functions. According to the hydraulic support with the anti-skid, early warning and automatic inclination adjusting functions, inclination adjustment can be automatically conducted on the hydraulic support, operation is easy, the hydraulic support is prevented from inclining or even toppling over, use safety and convenience are improved, the state of the hydraulic support can be monitored in real time, and an early warning signal can be sent out in time. A hydraulic support with anti-skid, early warning and automatic inclination adjusting functions comprises a mounting plate, first limiting frames and the like, and the front first limiting frame and the rear first limiting frame are connected to the upper side of the left portion of the mounting plate. Liquid conveying and liquid returning are conducted on the electro-hydraulic jack through the connecting pipe, then the base is controlled to ascend and descend, the mounting plate is lifted, the electro-hydraulic jack is lowered, the mounting plate is lowered, and the electro-hydraulic jack is lifted, so that the inclination of the device can be automatically adjusted, operation is easy, inclination and even toppling are prevented, and the device is suitable for popularization and application. And the use safety and convenience are improved.

Description

Technical Field

[0001] The invention relates to the field of coal mining, and in particular to a hydraulic support with anti-skid early warning and automatic tilt adjustment functions. Background Art

[0002] With the development and progress of modern coal mining technology, the intensity of coal mining has been continuously increased. The coal resources with good mining conditions in many coal mines have been gradually exhausted. In recent years, many coal enterprises have had to face the mining of coal seams under complex conditions, such as the mining of high-angle coal seams. Under normal circumstances, the inclination angle of high-angle coal seams is generally between 25° and 50°. During the mining process of the working face, the hydraulic support is very likely to slip and tip over, which seriously affects the safe and efficient production of the mine. Due to the close relationship between the positions of the hydraulic supports of the working face, the slip and tipping of one support is easy to form a chain effect, causing other hydraulic supports to tilt or even tip over one after another, bringing huge safety hazards to the control of the working face roof. At present, when mining at a high-angle working face, it is generally necessary to set an anti-skid device to prevent the hydraulic support from sliding or tipping under the action of its own gravity and roof pressure. However, the existing anti-skid device of the hydraulic support has a relatively single function. For example, the single bottom adjustment jack can only realize the posture adjustment after the frame is moved, and the double bottom adjustment jack can only realize the anti-skid problem, which cannot fully meet the needs of complex geological conditions of the coal mining working face.

[0003] Therefore, it is necessary to design a hydraulic support with anti-skid warning and automatic tilt adjustment function that can automatically adjust the tilt of the device, is simple to operate, prevents the device from tilting or even tipping over, improves the safety and convenience of use, and can monitor the status of the device in real time and send out warning signals in time. Summary of the invention

[0004] In order to overcome the shortcomings of the existing hydraulic support anti-skid devices, such as the single bottom adjustment jack can only realize the posture adjustment after the frame is moved, and the double bottom adjustment jack can only realize the anti-skid problem, and cannot fully meet the needs of complex geological conditions of the coal mining face, the present invention provides a hydraulic support with anti-skid warning and automatic tilt adjustment function that can automatically adjust the tilt of the device, is simple to operate, prevents the device from tilting or even tipping over, improves the safety and convenience of use, and can monitor the status of the device in real time and send out warning signals in time.

[0005] The technical solution of the present invention is: a hydraulic support with anti-skid early warning and automatic inclination adjustment function, including a mounting plate, a first limit frame, an anti-sliding block, a supporting mechanism and an adjusting mechanism, the upper left side of the mounting plate is connected to two front and rear first limit frames, the right side of the mounting plate is connected to the anti-sliding block, a supporting mechanism for supporting the coal seam is provided between the mounting plate and the first limit frame, and an adjusting mechanism for automatic inclination adjustment is provided on the mounting plate.

[0006] Furthermore, the first limiting frames are all U-shaped.

[0007] Furthermore, the supporting mechanism includes a first hydraulic cylinder, a rotating frame, a support plate, a second hydraulic cylinder and a baffle. The first limiting frame is rotatably connected to the first hydraulic cylinder, the right part of the mounting plate is rotatably connected to the rotating frame, the rotating frame is rotatably connected to the support plate, the telescopic ends of the first hydraulic cylinder are rotatably connected to the support plate, the left part of the support plate is rotatably connected to the second hydraulic cylinder, the telescopic end of the second hydraulic cylinder is rotatably connected to the baffle, and the baffle is rotatably connected to the support plate.

[0008] Furthermore, the left portion of the baffle is an inclined surface.

[0009] Furthermore, the adjustment mechanism includes a base, an electro-hydraulic jack, an electro-hydraulic controller, a connecting pipe, a displacement monitor, an alarm and an electric push rod. The base is placed on the ground, the base is located at the lower side of the mounting plate, the upper sides of the front and rear parts of the base are connected to the left and right electro-hydraulic jacks, the upper side of the middle part of the base is connected to the electro-hydraulic controller, the front and rear sides of the electro-hydraulic controller are connected to the left and right groups of connecting pipes, each group consists of two connecting pipes, and the tail ends of the connecting pipes in the same group are connected to the adjacent electro-hydraulic jacks, the front and rear sides of the mounting plate are connected to the left and right displacement monitors, the displacement monitor is electrically connected to the electro-hydraulic controller, and the front and rear sides of the support plate are connected to the left and right displacement monitors. The upper left side of the base is connected with an alarm, and the displacement monitor is electrically connected to the alarm. The front and rear electric push rods are connected to the upper left side of the base. The set initial value of the displacement monitor changes, and the changed height after the base is tilted is recorded, so that the alarm sounds an alarm to prompt, thereby realizing anti-slip warning, and the initial value is maintained by the electro-hydraulic controller, and then the electro-hydraulic jack is infused and returned through the connecting pipe, thereby controlling the raising and lowering of the base. When the mounting plate is raised, the height of the electro-hydraulic jack is lowered, and when the mounting plate is lowered, the height of the electro-hydraulic jack is raised, and then the tilt is adjusted, so that the electric push rod starts to push the support plate back.

[0010] Furthermore, it also includes a reinforcing mechanism, which includes a fixed block, a telescopic rod, a stabilizing block, a fixed rod and a top frame. The right part of the base is connected to the fixed block, the front and rear right sides of the fixed block are connected to the telescopic rod, the stabilizing block is connected between the telescopic ends of the telescopic rod, the front and rear parts of the stabilizing block are both slidably and detachably connected to the fixed rod, and the top frame is rotatably connected to the stabilizing block, and the top frame is in contact and cooperate with the fixed block; the fixed rod is in contact with the stabilizing block, so that the stabilizing block is moved and inserted into the ground for fixation. When the device is displaced, it will drive the fixed block to move, causing the telescopic rod to contract, thereby causing the top frame to rotate, and then the fixed block is pushed back.

[0011] Furthermore, the lower parts of the fixing rods are all tapered.

[0012] Furthermore, it also includes a stabilizing mechanism, which includes a sleeve, an arc-shaped member, a rack frame, a second limit frame and a gear. The front and rear sleeves are connected to the left side of the upper part of the rotating frame, and the sleeves are slidably connected with arc-shaped members, and the arc-shaped members pass through the support plate. The rack frames are connected to the arc-shaped members, and the rack frames are in contact with the sleeves on the same side. The front and rear second limit frames are connected to the lower side of the right part of the support plate, and the second limit frames are rotatably connected with gears, and the gears are meshed with the rack frame on the same side. When the support plate tilts, the support plate rotates to move the gear, and the gear and the rack frame mesh with each other to move, so that the rack frame moves, and then drives the arc-shaped member to move along the sleeve, so that the arc-shaped member is inserted into the coal wall for fixation.

[0013] Furthermore, the sleeves are all arc-shaped.

[0014] Furthermore, the upper parts of the arc-shaped parts are all tapered.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention uses a connecting pipe to infuse and return liquid to the electro-hydraulic jack, thereby controlling the raising and lowering of the base. When the mounting plate is raised, the height of the electro-hydraulic jack is lowered, and when the mounting plate is lowered, the height of the electro-hydraulic jack is raised, thereby automatically adjusting the tilt of the device. The operation is simple, preventing the device from tilting or even tipping over, and improving the safety and convenience of use.

[0016] 2. When the device of the present invention topples over, the set initial value of the displacement monitor changes, and the changed height of the base after toppling over is recorded, so that the alarm sounds an alarm to give a prompt, thereby realizing anti-slip warning, so that the status of the device can be monitored in real time and a warning signal can be issued in time.

[0017] 3. The present invention drives the baffle to rotate through the second hydraulic cylinder, so that the baffle contacts the coal wall for support, and the second hydraulic cylinder rotates, thereby supporting the coal seam roof, preventing the roof rock from collapsing and causing danger, and protecting the safety of operators.

[0018] 4. The present invention contacts the stabilizing block through the fixing rod, so that the stabilizing block is moved and inserted into the ground for fixing. When the device is displaced, it will drive the fixing block to move, causing the telescopic rod to contract, thereby causing the top frame to rotate, and then pushing the fixing block back, thereby preventing excessive displacement, strengthening support for the device, and improving the stability of the device.

[0019] 5. In the present invention, when the support plate is tilted, the support plate rotates, causing the gear to move, and the gear and the rack frame mesh with each other to move, causing the rack frame to move, thereby driving the arc-shaped member to move along the sleeve, so that the arc-shaped member is inserted into the coal wall for fixation, thereby being able to fix the support plate when it rotates, for further reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0022] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the support mechanism of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the first part of the adjustment mechanism of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the second part of the adjustment mechanism of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the first part of the reinforcing mechanism of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the second part of the reinforcing mechanism of the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the stabilizing mechanism of the present invention.

[0028] In the accompanying drawings: 1-mounting plate, 2-first limit frame, 3-anti-sliding block, 4-support mechanism, 41-first hydraulic cylinder, 42-rotating frame, 43-support plate, 44-second hydraulic cylinder, 45-baffle, 5-adjustment mechanism, 51-base, 52-electro-hydraulic jack, 53-electro-hydraulic controller, 54-connecting pipe, 55-displacement monitor, 56-alarm, 57-electric push rod, 6-reinforcement mechanism, 61-fixed block, 62-telescopic rod, 63-stabilizing block, 64-fixed rod, 65-top frame, 7-stabilizing mechanism, 70-sleeve, 71-arc-shaped member, 72-rack frame, 73-second limit frame, 74-gear. DETAILED DESCRIPTION

[0029] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0030] A hydraulic support with anti-skid warning and automatic tilt adjustment function, such as Figure 1-Figure 5 As shown, it includes a mounting plate 1, a first limit frame 2, an anti-sliding block 3, a supporting mechanism 4 and an adjusting mechanism 5. The upper left side of the mounting plate 1 is connected to two front and rear first limit frames 2, and the first limit frames 2 are both U-shaped. The anti-sliding block 3 is connected to the right side of the mounting plate 1. A supporting mechanism 4 for supporting the coal seam is provided between the mounting plate 1 and the first limit frame 2, and an adjusting mechanism 5 for automatic inclination adjustment is provided on the mounting plate 1.

[0031] like Figure 1 and Figure 3 As shown, the supporting mechanism 4 includes a first hydraulic cylinder 41, a rotating frame 42, a supporting plate 43, a second hydraulic cylinder 44 and a baffle 45. The first limiting frame 2 is rotatably connected to the first hydraulic cylinder 41, the right part of the mounting plate 1 is rotatably connected to the rotating frame 42, the rotating frame 42 is rotatably connected to the supporting plate 43, the telescopic ends of the first hydraulic cylinder 41 are rotatably connected to the supporting plate 43, the left part of the supporting plate 43 is rotatably connected to the second hydraulic cylinder 44, the telescopic end of the second hydraulic cylinder 44 is rotatably connected to the baffle 45, the baffle 45 is rotatably connected to the supporting plate 43, and the left part of the baffle 45 is an inclined surface.

[0032] like Figure 1 , Figure 4 and Figure 5 As shown, the adjustment mechanism 5 includes a base 51, an electro-hydraulic jack 52, an electro-hydraulic controller 53, a connecting pipe 54, a displacement monitor 55, an alarm 56 and an electric push rod 57. The base 51 is placed on the ground and is located at the lower side of the mounting plate 1. The upper sides of the front and rear parts of the base 51 are connected to the left and right electro-hydraulic jacks 52, the upper side of the middle part of the base 51 is connected to the electro-hydraulic controller 53, the front and rear sides of the electro-hydraulic controller 53 are connected to the left and right groups of connecting pipes 54, each group is composed of two connecting pipes 54, and the tail ends of the connecting pipes 54 in the same group are connected to the adjacent electro-hydraulic jacks 52, the front and rear sides of the mounting plate 1 are connected to the left and right displacement monitors 55, the displacement monitor 55 is electrically connected to the electro-hydraulic controller 53, the front and rear sides of the support plate 43 are connected to the alarm 56, the displacement monitor 55 is electrically connected to the alarm 56, and the upper side of the left part of the base 51 is connected to the front and rear electric push rods 57.

[0033] When support is needed for coal seam mining, this device can be used. This device can be brought to the place where coal seam mining is needed, so that the base 51 contacts the ground, and then the first hydraulic cylinder 41 is started. The first hydraulic cylinder 41 drives the support plate 43 to move and contact the top wall of the mine, so that the rotating frame 42 rotates, and the first hydraulic cylinder 41 rotates along the first limit frame 2. The first limit frame 2 is all U-shaped. The second hydraulic cylinder 44 is started, and the baffle 45 is driven to rotate by the second hydraulic cylinder 44. The left part of the baffle 45 is an inclined surface, so that the baffle 45 contacts the coal wall for support, and the second hydraulic cylinder 44 rotates, so that the coal seam roof can be supported to prevent the top rock from collapsing and causing danger, and protect the safety of the operator. When this device topples over, the set initial value of the displacement monitor 55 changes, and the changed height of the base 51 after the topples over is recorded, so that the alarm 56 sends an alarm to prompt, thereby achieving Anti-slip warning, so that the status of the device can be monitored in real time, and a warning signal can be issued in time, the initial value is maintained through the electro-hydraulic controller 53, and then the electro-hydraulic jack 52 is infused and returned through the connecting pipe 54, so as to control the raising and lowering of the base 51. When the mounting plate 1 is raised, the height of the electro-hydraulic jack 52 is lowered, and when the mounting plate 1 is lowered, the height of the electro-hydraulic jack 52 is raised, so that the device can be automatically tilted, and the operation is simple, which can prevent the device from tilting or even tipping over, and improve the safety and convenience of use, so that the electric push rod 57 is started to push back the support plate 43. After the automatic tilt adjustment is completed, the electro-hydraulic controller 53 stops running. After use, the first hydraulic cylinder 41 is started to operate in reverse, so that the support plate 43 and the rotating frame 42 rotate and reset, and the second hydraulic cylinder 44 is started to operate in reverse, so that the baffle 45 rotates and resets and separates from the coal wall, and then the device can be taken away.

[0034] like Figure 1 , Figure 6 and Figure 7 As shown, a reinforcing mechanism 6 is also included, and the reinforcing mechanism 6 includes a fixed block 61, a telescopic rod 62, a stabilizing block 63, a fixed rod 64 and a top frame 65. The right part of the base 51 is connected to the fixed block 61, and the right sides of the front and rear parts of the fixed block 61 are both connected to the telescopic rod 62, and the stabilizing block 63 is connected between the telescopic ends of the telescopic rod 62. The front and rear parts of the stabilizing block 63 are both slidably and detachably connected to the fixed rod 64, and the lower part of the fixed rod 64 is conical for easy insertion into the ground. The top frame 65 is rotatably connected to the stabilizing block 63, and the top frame 65 is in contact with the fixed block 61.

[0035] When the device moves to a specified position, the fixing rod 64 contacts the stabilizing block 63, so that the stabilizing block 63 moves and is inserted into the ground for fixation. The lower part of the fixing rod 64 is tapered, which is convenient for insertion into the ground. When the device is displaced, it will drive the fixing block 61 to move, so that the telescopic rod 62 contracts, and then the top frame 65 rotates, and then the fixing block 61 is pushed back, so that the fixing block 61 can be pushed back to prevent excessive displacement, strengthen the support of the device, and improve the stability of the device. After use, the fixing rod 64 can be pulled out.

[0036] like Figure 1 and Figure 8 As shown, a stabilizing mechanism 7 is also included. The stabilizing mechanism 7 includes a sleeve 70, an arc-shaped member 71, a rack frame 72, a second limit frame 73 and a gear 74. The left side of the upper portion of the rotating frame 42 is connected to two front and rear sleeves 70. The sleeves 70 are all arc-shaped. The sleeves 70 are slidably connected with arc-shaped members 71. The arc-shaped members 71 all pass through the support plate 43. The upper portions of the arc-shaped members 71 are all tapered for easy insertion into the coal wall. The arc-shaped members 71 are connected with rack frames 72. The rack frames 72 are in contact with the sleeves 70 on the same side. The lower side of the right portion of the support plate 43 is connected to two front and rear second limit frames 73. The second limit frames 73 are rotatably connected with gears 74. The gears 74 are meshed with the rack frames 72 on the same side.

[0037] When the support plate 43 is tilted, the support plate 43 rotates, causing the gear 74 on the second limit frame 73 to move, and the gear 74 and the rack frame 72 mesh with each other to move, causing the rack frame 72 to move, thereby driving the arc member 71 to move along the sleeve 70. The sleeve 70 is all arc-shaped, so that the arc member 71 is inserted into the coal wall for fixation. The upper part of the arc member 71 is all conical, which is convenient for insertion into the coal wall, so that it can be fixed when the support plate 43 rotates, and further reinforced. After use, the gear 74 is rotated in the opposite direction by hand to make the rack frame 72 move in the opposite direction, thereby driving the arc member 71 to move in the opposite direction and separate from the coal wall.

[0038] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

Claims

1. A hydraulic support with anti-skid warning and automatic tilt adjustment function, characterized in that: The invention comprises a mounting plate (1), a first limiting frame (2), an anti-sliding block (3), a supporting mechanism (4) and an adjusting mechanism (5); the upper left side of the mounting plate (1) is connected to two front and rear first limiting frames (2); the right side of the mounting plate (1) is connected to the anti-sliding block (3); a supporting mechanism (4) for supporting the coal seam is provided between the mounting plate (1) and the first limiting frame (2); and an adjusting mechanism (5) for automatically adjusting the inclination is provided on the mounting plate (1).

2. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 1, characterized in that: The first limiting frames (2) are all U-shaped.

3. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 2, characterized in that: The support mechanism (4) comprises a first hydraulic cylinder (41), a rotating frame (42), a support plate (43), a second hydraulic cylinder (44) and a baffle (45); the first limit frame (2) is rotatably connected to the first hydraulic cylinder (41); the right part of the mounting plate (1) is rotatably connected to the rotating frame (42); the rotating frame (42) is rotatably connected to the support plate (43); the telescopic end of the first hydraulic cylinder (41) is rotatably connected to the support plate (43); the left part of the support plate (43) is rotatably connected to the second hydraulic cylinder (44); the telescopic end of the second hydraulic cylinder (44) is rotatably connected to the baffle (45); the baffle (45) is rotatably connected to the support plate (43).

4. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 3, characterized in that: The left portion of the baffle plate (45) is an inclined plane.

5. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 4, characterized in that: The adjustment mechanism (5) comprises a base (51), an electro-hydraulic jack (52), an electro-hydraulic controller (53), a connecting pipe (54), a displacement monitor (55), an alarm (56) and an electric push rod (57). The base (51) is placed on the ground and is located at the lower side of the mounting plate (1). The upper sides of the front and rear parts of the base (51) are connected to the left and right electro-hydraulic jacks (52). The upper side of the middle part of the base (51) is connected to the electro-hydraulic controller (53). The front and rear sides of the electro-hydraulic controller (53) are connected to the left and right groups of connecting pipes (54), each group consists of two connecting pipes (54), and the tail ends of the connecting pipes (54) in the same group are connected to the adjacent electro-hydraulic jacks (52). The front and rear sides of the mounting plate (1) are connected to the left and right displacement monitors (55). The displacement monitor (55) and the electro-hydraulic controller (53) are electrically connected. The support plate (43) is connected to an alarm (56) on both the front and rear sides. The displacement monitor (55) is electrically connected to the alarm (56). The upper left side of the base (51) is connected to two front and rear electric push rods (57). The initial value of the displacement monitor (55) changes, and the height change after the base (51) is tilted is recorded, so that the alarm (56) issues an alarm to prompt, thereby realizing anti-skid early warning. The initial value is maintained by the electro-hydraulic controller (53), and the electro-hydraulic jack (52) is infused and returned through the connecting pipe (54), thereby controlling the base (51) to rise and fall. When the mounting plate (1) is raised, the height of the electro-hydraulic jack (52) is lowered. When the mounting plate (1) is lowered, the height of the electro-hydraulic jack (52) is raised, and then the tilt is adjusted, so that the electric push rod (57) starts to push the support plate (43) back.

6. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 5, characterized in that: The invention also comprises a reinforcing mechanism (6), which comprises a fixed block (61), a telescopic rod (62), a stabilizing block (63), a fixed rod (64) and a top frame (65). The right part of the base (51) is connected with the fixed block (61). The front and rear right sides of the fixed block (61) are both connected with the telescopic rod (62). The stabilizing block (63) is connected between the telescopic ends of the telescopic rod (62). The front and rear parts of the stabilizing block (63) are both connected with the fixed rod (64) in a sliding and detachable manner. The top frame (65) is rotatably connected to the top of the stabilizing block (63). The top frame (65) is in contact with the fixed block (61); the fixed rod (64) contacts the stabilizing block (63), so that the stabilizing block (63) moves and is inserted into the ground for fixing. When the device is displaced, the fixed block (61) is driven to move, so that the telescopic rod (62) contracts, and the top frame (65) is rotated, so as to push the fixed block (61) in reverse.

7. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 6, characterized in that: The lower part of the fixing rod (64) is tapered.

8. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 7, characterized in that: The invention also comprises a stabilizing mechanism (7), which comprises a sleeve (70), an arc-shaped member (71), a rack frame (72), a second limiting frame (73) and a gear (74). The left side of the upper part of the rotating frame (42) is connected to two sleeves (70) at the front and rear ends, and the sleeves (70) are all slidably connected to the arc-shaped members (71). The arc-shaped members (71) pass through the support plate (43). The rack frames (72) are all connected to the arc-shaped members (71). The rack frames (72) are in contact with the sleeves (70) on the same side. The right side of the support plate (43) is connected to the sleeves (70) at the rear end. The lower side of the support plate (43) is connected with two front and rear second limit frames (73), and the second limit frames (73) are rotatably connected with gears (74), and the gears (74) are meshed with the rack frames (72) on the same side; when the support plate (43) is tilted, the support plate (43) rotates, so that the gears (74) move, and the gears (74) and the rack frames (72) mesh with each other, so that the rack frames (72) move, and then drive the arc-shaped member (71) to move along the sleeve (70), so that the arc-shaped member (71) is inserted into the coal wall for fixation.

9. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 8, characterized in that: The sleeves (70) are all arc-shaped.

10. A hydraulic support with anti-skid warning and automatic tilt adjustment function according to claim 9, characterized in that: The upper part of the arc-shaped member (71) is tapered.

Images