Non-stop automatic leveling foundation for underground coal mine equipment

Abstract

The invention provides a non-stop automatic leveling foundation for underground coal mine equipment. The non-stop automatic leveling foundation comprises a foundation pier; a foundation pit used for containing the foundation pier is formed in the foundation, a moving gap is formed between the foundation pier and the foundation pit, and a bottom groove used for containing the hydraulic jack is formed in the bottom face of the foundation pit; and the hydraulic jacks are used for jacking the foundation pier, and the output ends of the hydraulic jacks are located below the foundation pier. The problem that equipment is shut down during deviation rectification, inclination adjustment and leveling of the foundation is solved.

Description

Technical Field

[0001] The invention belongs to the field of engineering construction of equipment foundation deflection, settlement, etc., and specifically relates to a foundation of coal mine underground equipment which can automatically level the foundation without stopping the machine. Background Art

[0002] At present, most coal mining has entered deep mining, the ground stress has increased, the tunnels and chambers have been significantly damaged, the bottom drum phenomenon is serious, and the foundations of related equipment in the tunnels and chambers are generally significantly deflected, which seriously affects the operation of the equipment and the safety of underground production. Due to the tight production of coal mines, the requirement for underground equipment is to try not to shut down. In addition, the foundation of large equipment (such as belt conveyors) often bears a large lateral dynamic load (belt tension), which puts strict requirements on the stability of the equipment foundation. In view of the small underground working space and the requirement that the equipment should not be shut down, when the foundation is inevitably deformed, it is particularly urgent and important to invent a foundation that can automatically level the equipment without stopping.

[0003] At present, the commonly used foundation correction technologies on the ground mainly include foundation pressure correction method, foundation decompression and stiffening method, immersion and pressure correction method, soil excavation correction method, anchor static pressure pile method, pile jacking and soil excavation correction method, high-pressure jet grouting method, etc. These methods have large engineering workloads and require sufficient working space, which affects the normal production underground. Some methods can achieve foundation reinforcement, but cannot solve the lateral stability of the foundation. Therefore, it is urgent to invent a foundation that can automatically monitor, automatically adjust, and is stable and reliable. Summary of the invention

[0004] The purpose of the present invention is to provide a coal mine underground equipment that can automatically level the foundation without stopping, solve the problem of foundation correction, tilting and leveling, and the equipment can run without stopping, and meet the narrow construction space of underground tunnels and chambers, while balancing the strong lateral dynamic load on the foundation, preventing rollover, and ensuring the lateral stability of the foundation. The technical solution adopted is as follows:

[0005] A coal mine underground equipment capable of automatically leveling the foundation without stopping the machine, comprising:

[0006] foundation pier 19;

[0007] A foundation 18, on which a foundation pit is provided for placing a foundation pier 19, a movable gap is formed between the foundation pier 19 and the foundation pit, and a bottom groove 17 for placing a hydraulic jack is provided on the bottom surface of the foundation pit;

[0008] A plurality of hydraulic jacks are used to lift the base pier 19 , and the output ends of the hydraulic jacks are located below the base pier 19 .

[0009] Preferably, an anti-rollover basic component is further included, which is used to prevent the base 19 from flipping around the Z axis during the up and down movement process, and includes:

[0010] A steel baffle 10 is horizontally arranged, one section of which is sleeved on the smooth section of the bolt 9, and the other section of which covers the surface of the base 19;

[0011] The threaded sleeve 11 is used to match the threaded section of the bolt 9 and is anchored on the solid structure of the foundation pit.

[0012] Preferably, the steel baffle 10 is made of C20 steel.

[0013] Preferably, the base 19 is cast by concrete, and the base 19 before casting includes:

[0014] frame;

[0015] Steel meshes 6 are installed on the frame, adjacent steel meshes 6 are distributed along the Y direction, and steel sleeves 13 are arranged between adjacent steel meshes 6;

[0016] A steel bar sleeve 13 is used to place the steel bar 12, and both ends of the sleeve along the Z direction are open;

[0017] And the steel bar 12 is used to limit the base pier 19 along the X direction, which is located in the corresponding steel bar sleeve 13 and its lower end along the Z direction is anchored to the foundation 18.

[0018] Preferably, the steel bar 12 is a hollow structure.

[0019] Preferably, it further comprises a hydraulic pump 15 , which is connected to a corresponding hydraulic jack via a pumping pipeline 16 ; the pumping pipeline 16 is located in a groove on the foundation pit 18 .

[0020] Preferably, a horizontal sensing system is further provided, which includes: a first sensor 21 , a second sensor 22 and a third sensor 23 .

[0021] Preferably, the No. 1 sensor 21 is located in the top groove 4 of the pier 19 and directly above the No. 1 hydraulic jack 1 .

[0022] Preferably, the hydraulic jacks are distributed in a herringbone shape.

[0023] Preferably, the underground coal mine equipment comprises a belt 8 .

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. The foundation correction and inclination adjustment construction can be carried out in the limited and narrow working space underground. The equipment does not need to be shut down during construction, which can ensure the continuous, normal and safe operation of the equipment.

[0026] 2. Compared with the currently commonly used foundation grouting correction method, the present invention is green, environmentally friendly and pollution-free.

[0027] 3. It can realize automatic monitoring and automatic adjustment to reduce work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The structural diagram of the foundation that can be automatically leveled without stopping the underground equipment in the coal mine;

[0029] Figure 2 for Figure 1 Top view of the surface of the middle foundation pier;

[0030] Figure 3 for Figure 1 Top view of the foundation surface.

[0031] Figure 4 This is a schematic diagram of the foundation structure after leveling.

[0032] Among them, 1-No. 1 jack, 2-No. 2 jack, 3-No. 3 jack;

[0033] 4-top groove; 5-sensing wire; 6-steel mesh;

[0034] 7- roller; 8- belt;

[0035] 9-screw, 10-steel baffle; 11-threaded sleeve;

[0036] 12-rebar; 13-rebar sleeve;

[0037] 14- control console; 15- hydraulic pump;

[0038] 16-pumping pipeline; 17-bottom groove;

[0039] 18-foundation; 19-base pier; 20-through hole;

[0040] 21-Sensor No. 1; 22-Sensor No. 2; 23-Sensor No. 3. DETAILED DESCRIPTION

[0041] The following will be described in more detail with reference to the schematic diagram of the present invention, wherein the preferred embodiment of the present invention is shown, and it should be understood that the present invention described herein can be modified by those skilled in the art, while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation of the present invention.

[0042] like Figures 1 to 4 , the coal mine underground equipment can automatically level the foundation without stopping, including:

[0043] foundation pier 19;

[0044] Foundation 18, on which a foundation pit for placing pier 19 is formed, a moving gap is formed between pier 19 and the foundation pit, and a bottom groove 17 for placing a hydraulic jack is formed on the bottom surface of the foundation pit; the bottom groove 17 is rectangular.

[0045] A plurality of hydraulic jacks, which are used to lift pier 19, and the output end of the hydraulic jack is located below pier 19;

[0046] An anti-overturning foundation member, which is used to prevent pier 19 from overturning around the Z-axis during the up and down movement, and includes:

[0047] A steel baffle 10, which is horizontally arranged, one section of which is sleeved on the smooth section of bolt 9, and the other section covers the surface of pier 19; bolt 9 is a high-strength bolt. That is, the through hole 20 on the steel baffle 10 and the smooth section of bolt 9 are in clearance fit, and the steel baffle 10 is always horizontally arranged along the X direction.

[0048] A threaded sleeve 11, which is used to fit with the threaded section of bolt 9 and is anchored to the solid structure of the foundation pit.

[0049] In this embodiment, the number of hydraulic jacks is 3, and they are distributed in a "pin" shape.

[0050] Underground coal mine equipment, including a belt 8 and a roller 7. The roller 7 is rotatably arranged on pier 19.

[0051] In this embodiment, pier 19 is formed by concrete pouring. Before pouring, pier 19 includes:

[0052] A framework;

[0053] A steel bar mesh 6, which is installed in the framework, and adjacent steel bar meshes 6 are distributed in the Y direction, and a steel bar sleeve 13 is arranged between adjacent steel bar meshes 6;

[0054] A steel bar sleeve 13, which is used to place steel bars 12, and both ends of it are open along the Z direction;

[0055] Steel bars 12, which are used to limit pier 19 in the X direction, are located in the corresponding steel bar sleeves 13, and the lower ends of them are anchored to foundation 18 along the Z direction.

[0056] That is, regarding the steel bars 12: There are three steel bars 12 (φ20) anchored at the bottom of the foundation pit in an inverted "pin" shape distribution. The lower ends of the steel bars are fixed ends, anchored in the foundation pit, and the fixed end length is 50 cm. The upper ends are movable ends, passing through the steel bar sleeves 13 in pier 19, and the length of the movable end is shorter than that of the steel bar sleeve 13. On the one hand, it can limit the horizontal movement of the pier, and on the other hand, it can enable the pier to move freely up and down.

[0057] The above structural design is used to improve the strength of pier 19.

[0058] The hydraulic lifting system also includes:

[0059] A hydraulic pump 15 connected to a corresponding hydraulic jack;

[0060] The pumping pipeline 16 is located in a groove on the foundation pit 18 .

[0061] Among them, the hydraulic jack is self-locking, and the specific model can be selected according to the weight of the equipment and the height adjustment.

[0062] In this embodiment, a horizontal sensing system is further provided, which includes: a first sensor 21, a second sensor 22 and a third sensor 23. Among them, the three sensors are all single-axis tilt sensors, and are all connected to the console 14 through a sensor line 5.

[0063] A top groove 4 is provided on the upper surface of the pier 19 just above the hydraulic jack to place three sensors.

[0064] Sensor No. 1, sensor No. 2, and sensor No. 3 are located directly above hydraulic jacks No. 1, No. 2, and No. 3, respectively, and sensor No. 1 points in the direction of hydraulic jack No. 3, inclination sensor No. 3 points in the direction of hydraulic jack No. 2, and inclination sensor No. 2 points in the direction of hydraulic jack No. 1.

[0065] After the three inclination sensors transmit the angle signals to the control console 14, the control console determines the lifting height of the jack according to the inclination angle and the distance between the sensors.

[0066] Prioritize adjusting the jack under the sensor with the largest inclination angle, and adjust it in a clockwise direction. Taking sensor No. 1 as an example, raise the No. 1 hydraulic jack when the angle is positive, and raise the No. 3 hydraulic jack when the angle is negative.

[0067] When the pier tilts, the inclination sensor converts the angle signal into an electrical signal and transmits it to the control console. The control console 14 controls the hydraulic pump 15 to realize automatic leveling of the pier by lifting and lowering the jack.

[0068] In this embodiment, the anti-rollover basic component can be freely disassembled.

[0069] The steel baffle 10 is made of C20 steel, 5 cm high, 10 cm wide and 40 cm long;

[0070] The number of steel baffles 10 is determined by the size of the pier 19, and two symmetrical steel baffles are arranged on both sides of the pier every 50 cm.

[0071] The length of the threaded section (ie the height of the threaded sleeve 11) is 50 cm, and the length of the smooth section is the sum of the thickness of the steel baffle 10 and the maximum lifting height of the jack.

[0072] When the foundation is deformed by bottom bulge, the structure after leveling through the above steps is as follows Figure 4 As shown. The final lifting height of the hydraulic jack is consistent with the maximum undulation height of the foundation. After the pier 19 is lifted by the jack, it moves vertically upward along the steel bar 12. The steel baffle 10 moves upward along the high-strength screw 9 with the pier 19 to prevent the pier 19 from tipping over. The rising heights of the steel baffle 10 and the pier 19 are consistent with the maximum undulation height of the foundation.

[0073] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A coal mine underground equipment that can automatically level the foundation without stopping, characterized in that: include: foundation pier(19); A foundation (18) is provided on which a foundation pit is provided for placing a foundation pier (19), a movable gap is formed between the foundation pier (19) and the foundation pit, and a bottom groove (17) is provided on the bottom surface of the foundation pit for placing a hydraulic jack; A plurality of hydraulic jacks are used to lift the base pier (19), and the output ends of the hydraulic jacks are located below the base pier (19).

2. The automatic leveling foundation of the coal mine underground equipment without stopping according to claim 1 is characterized in that: It further comprises an anti-rollover basic component, which is used to prevent the base pier (19) from turning over around the Z axis during the up and down movement process, and comprises: A steel baffle (10) is horizontally arranged, one section of which is sleeved on the smooth section of the bolt (9) and the other section of which covers the surface of the base pier (19); The threaded sleeve (11) is used to match the threaded section of the bolt (9) and is anchored on the solid structure of the foundation pit.

3. The automatic leveling foundation of the coal mine underground equipment without stopping according to claim 2 is characterized in that: The steel baffle (10) is made of C20 steel.

4. The automatic leveling foundation of the underground equipment in coal mines without stopping according to claim 1 is characterized in that: The base pier (19) is cast by concrete, and the base pier (19) before casting comprises: frame; A steel mesh (6) is installed on the frame, adjacent steel meshes (6) are distributed along the Y direction, and steel sleeves (13) are arranged between adjacent steel meshes (6); A steel bar sleeve (13) for placing the steel bar (12), with both ends of the sleeve open along the Z direction; and a steel bar (12) for limiting the base pier (19) along the X direction, which is located in the corresponding steel bar sleeve (13) and anchored to the foundation (18) at the lower end along the Z direction.

5. The automatic leveling foundation of the underground equipment in coal mines without stopping according to claim 4 is characterized in that: The steel bar (12) is a hollow structure.

6. The automatic leveling foundation of the coal mine underground equipment without stopping according to claim 1 is characterized in that: It further comprises a hydraulic pump (15), which is connected to a corresponding hydraulic jack via a pumping pipeline (16); the pumping pipeline (16) is located in a groove on the foundation pit (18).

7. The automatic leveling foundation of the underground equipment in coal mines without stopping according to claim 1 is characterized in that: A level sensing system is further provided, which comprises: a first sensor (21), a second sensor (22) and a third sensor (23).

8. The automatic leveling foundation of underground coal mine equipment without stopping according to claim 1 is characterized in that: The first sensor (21) is located in the top groove (4) of the base (19) and is located directly above the first hydraulic jack (1).

9. The automatic leveling foundation of underground coal mine equipment without stopping according to claim 1 is characterized in that: The hydraulic jacks are distributed in a herringbone shape.

10. The automatic leveling foundation of the coal mine underground equipment without stopping according to claim 1, characterized in that: Coal mine underground equipment includes a belt (8).

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