A head support extension device, mounting device and mounting method

Abstract

A kind of end support expansion device, by the detachable connection of connecting plate in device with hydraulic support roof, so that support device can better adapt to the environment of downhole superhigh section, device is not hindered when travelling because of the inconsistency of well wall height.The installation device is used to install the end support expansion device described above to the hydraulic support.The installation method is based on the installation method of the end support expansion device described above.

Description

Technical Field

[0001] This invention relates to the field of coal mine roadway support technology, specifically to an end support extension device, installation device, and installation method. Background Technology

[0002] In coal production, roadway support is one of the most important aspects of coal mining. Mining roadways are mostly located at the bottom of the coal seam, and the physical and mechanical properties of the coal seam are relatively poor, making maintenance relatively difficult. During on-site construction, due to abrupt changes in coal and rock strata and construction reasons, the roadway is often over-elevated, resulting in a narrow and tall roadway cross-section, which increases the difficulty of maintenance.

[0003] As the working face advances to the ultra-high section of the fully mechanized mining face, the safety factor is low, making it easy for safety accidents to occur and affecting the working speed. Therefore, it is of great significance to improve the support strength of the ultra-high section of the fully mechanized mining face.

[0004] Chinese patent document CN105134271B discloses a hydraulic support device for ultra-high sections at both ends of a fully mechanized mining face. This device features a separate hydraulic support unit mounted on the support frame, utilizing the telescopic characteristics of the hydraulic support unit to support the ultra-high section, thus avoiding the need for workers to stack timber on top of high beams during canopy construction. However, the hydraulic support unit is fixedly connected to the hydraulic support frame. Even though the hydraulic support unit can retract, the overall height remains high, which is not well adapted to the underground working environment. Inconsistencies in the shaft wall height may cause obstacles during the device's movement, thus affecting its usability. Summary of the Invention

[0005] To address the problem in existing technologies where the fixed connection between the hydraulic support device and the hydraulic support frame prevents the device from moving effectively downhole, this invention provides an end-end support extension device, an installation device, and an installation method. By detachably connecting the connecting plate in the end-end support extension device to the top plate of the hydraulic support frame, the end-end support extension device can better adapt to the ultra-high section environment downhole, and the device will not be hindered by inconsistent well wall heights during its movement.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an end support expansion device, including a first hydraulic cylinder installed on the top plate of a hydraulic support for a fully mechanized mining face, a support plate fixedly connected to the plunger of the first hydraulic cylinder, a connecting plate fixedly connected to the bottom of the first hydraulic cylinder, the connecting plate being detachably connected to the top plate of the hydraulic support, and multiple channels for the first hydraulic cylinder to pass through being provided on the top plate of the hydraulic support.

[0007] As a further optimization of the end support extension device of the present invention: the connecting plate is connected to the top plate of the hydraulic support by bolts.

[0008] As a further optimization of the end support extension device of the present invention: a second hydraulic cylinder and a third hydraulic cylinder are fixedly arranged on both sides of the first hydraulic cylinder, and the plungers of the second hydraulic cylinder and the third hydraulic cylinder can abut against the support plate, and the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder can all pass through the channel.

[0009] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an installation device for installing the above-mentioned end support extension device onto the hydraulic support. The installation device includes a conveyor frame and a hydraulic telescopic support for lifting the conveyor frame. The conveyor frame includes an upper support plate and a lower support plate. A gap is formed between the upper support plate and the lower support plate to accommodate the top plate of the hydraulic support. The connecting plate is slidably connected to the upper support plate. An automatic tightening gun is detachably provided on the lower support plate. A cylinder for pushing the automatic tightening gun to move is provided at the bottom of the automatic tightening gun.

[0010] As a further optimization of the installation device of the present invention: the upper support plate is provided with a slide for the first hydraulic cylinder and the connecting plate to slide through, and a guide strip is provided on the inner wall of the slide. The connecting plate is provided with a groove that matches the slide and the guide strip.

[0011] As a further optimization of the installation device of the present invention: the bottom of the conveyor frame is also provided with a drive mechanism, which includes two self-locking casters, two drive wheels and a motor for driving the drive wheels to rotate.

[0012] As a further optimization of the installation device of the present invention: the upper support plate is provided with a plurality of support rods for supporting the second hydraulic cylinder and the third hydraulic cylinder.

[0013] As a further optimization of the installation device of the present invention: the length of the slide is less than the length of the conveyor frame.

[0014] As a further optimization of the installation device of the present invention: the lower support plate is provided with a receiving cavity for accommodating the automatic tightening gun and the cylinder.

[0015] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an installation method based on the above-mentioned end support extension device, the method comprising the following steps: setting up a hydraulic support for support in the fully mechanized mining face; driving a first hydraulic cylinder from bottom to top through the channel until the connecting plate contacts the top plate of the hydraulic support; connecting the connecting plate to the top plate of the hydraulic support; driving the first hydraulic cylinder to lift the support plate upward until the support plate contacts the roof of the fully mechanized mining face.

[0016] Beneficial effects: This invention installs a first hydraulic cylinder on the top plate of the hydraulic support for the fully mechanized mining face, and the top plate of the hydraulic support has multiple channels for the first hydraulic cylinder to pass through. The plunger of the first hydraulic cylinder is fixedly connected to a support plate, and the bottom of the first hydraulic cylinder is fixedly connected to a connecting plate. The connecting plate is detachably connected to the top plate of the hydraulic support. It can be installed during use and removed after use, so that the support device can better adapt to the ultra-high section environment underground and is easy to move underground. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure after the end support extension device is installed; Figure 2 This is a schematic diagram of the end support extension device in use; Figure 3 This is a top view of the hydraulic support; Figure 4 This is a schematic diagram of the installation device structure; Figure 5 This is a top view of the installation device; Figure 6 This is a schematic diagram of the installation device and hydraulic support combination; The diagram shows the following markings: 1. Hydraulic support, 2. Support plate, 3. First hydraulic cylinder, 4. Second hydraulic cylinder, 5. Third hydraulic cylinder, 6. Support rod, 7. Connecting hole, 8. Channel, 9. Conveyor frame, 901. Upper support plate, 902. Slide rail, 903. Lower support plate, 904. Receiving cavity, 905. Guide bar, 10. Automatic tightening gun, 11. Cylinder, 12. Connecting plate, 13. Hydraulic telescopic support, 14. Drive mechanism, 1401. Self-locking caster wheel, 1402. Drive wheel, 1403. Motor. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of the present invention should be understood as prior art known or should be known by those skilled in the art, such as the model and size of the hydraulic support 1, the size, structure, model and assembly of the self-locking caster wheel 1401 with the lifting conveyor frame 13, the model, size and structure of the drive wheel 1402, the size, structure and internal wiring of the motor 1403, etc.

[0019] like Figure 1-3As shown, an end-support extension device includes a first hydraulic cylinder 3 mounted on the top plate of a hydraulic support 1 for a fully mechanized mining face. A support plate 2 is fixedly connected to the plunger of the first hydraulic cylinder 3, and a connecting plate 12 is fixedly connected to the bottom of the first hydraulic cylinder 3. The connecting plate 12 is detachably connected to the top plate of the hydraulic support 1. Multiple channels 8 are provided on the top plate of the hydraulic support 1 for the passage of the first hydraulic cylinder 3. The first hydraulic cylinder 3 is driven from bottom to top through the channels 8 until the connecting plate 12, fixedly connected to the bottom of the first hydraulic cylinder 3, contacts the top plate of the hydraulic support 1, and then the connecting plate 12 is connected to the top plate of the hydraulic support 1. The first hydraulic cylinder 3 is then driven, using its plunger to lift the support plate 2 upwards until the support plate 2 contacts the roof of the fully mechanized mining face. When disassembly is required, the connecting plate 12 is directly removed from the top plate of the hydraulic support 1, and then the cylinder passes through the channels 8 from top to bottom. The multiple channels 8 provide options for the position of the first hydraulic cylinder 3 on the top plate of the hydraulic support 1 to better adapt to the installation environment.

[0020] Corresponding connecting holes 7 are provided on the sides of multiple channels 8 through which the first hydraulic cylinder 3 passes. A through hole is also provided on the connecting plate 12. When the first hydraulic cylinder 3 passes through one of the channels 8 from bottom to top until the connecting plate 12, which is fixedly connected to the bottom of the first hydraulic cylinder 3, contacts the top plate of the hydraulic support 1, the through hole is connected to the corresponding connecting hole 7 on the side of the channel 8 by bolts. This allows for direct installation during use and easy disassembly when not in use. It also prevents the hydraulic support 1 from touching the uneven roof of the fully mechanized mining face when moved later, thus ensuring proper movement underground.

[0021] To improve the support effect, a second hydraulic cylinder 4 and a third hydraulic cylinder 5 are fixedly installed on both sides of the first hydraulic cylinder 3, respectively. The plungers of the second hydraulic cylinder 4 and the third hydraulic cylinder 5 can abut against the support plate 2. The first hydraulic cylinder 3, the second hydraulic cylinder 4, and the third hydraulic cylinder 5 can all pass through the channel 8. When the first hydraulic cylinder 3 is driven from bottom to top through the channel 8, the second hydraulic cylinder 4 and the third hydraulic cylinder 5, which are fixed on both sides of the first hydraulic cylinder 3, pass through the channel 8 together with the first hydraulic cylinder 3. The plungers of the second hydraulic cylinder 4 and the third hydraulic cylinder 5 can also abut against the support plate 2, thus supporting the roof of the longwall mining face.

[0022] The mounting device is used to install the aforementioned end support extension device onto the hydraulic support 1, such as... Figure 4-6As shown, the installation device includes a conveyor frame 9 and a hydraulic telescopic support 13 for lifting the conveyor frame 9. The conveyor frame 9 includes an upper support plate 901 and a lower support plate 903, with a gap between the upper support plate 901 and the lower support plate 903 to accommodate the top plate of the hydraulic support 1. The connecting plate 12 is slidably connected to the upper support plate 901. An automatic tightening gun 10 is detachably mounted on the lower support plate 903, and a cylinder 11 for pushing the automatic tightening gun 10 to move is provided at the bottom of the automatic tightening gun 10. A receiving cavity 904 is provided on the lower support plate 903 to accommodate the automatic tightening gun 10 and the cylinder 11.

[0023] The first hydraulic cylinder 3, the second hydraulic cylinder 4, and the third hydraulic cylinder 5 in the support device can all pass through the channel 8. Then, the connecting plate 12 of the first hydraulic cylinder 3 can be connected to the connecting hole 7 on the side of the channel 8 by bolts. However, the distance from the top plate of the hydraulic support 1 to the ground is still too high, and the support device is heavy. When construction personnel disassemble and install the end support extension device, they still need to be at a high position above the ground, which is unsafe and troublesome. Therefore, an installation device is set up to directly install the end support extension device onto the hydraulic support 1.

[0024] The hydraulic telescopic support 13 in the installation device can transport the conveyor frame 9 to the channel 8 and corresponding connection hole 7 to be installed. A gap is formed between the upper support plate 901 and the lower support plate 903 of the conveyor frame 9 to accommodate the top plate of the hydraulic support 1. During installation, the hydraulic telescopic support 13 moves the conveyor frame 9 along the width direction of the top plate of the hydraulic support 1, so that the top plate of the hydraulic support 1 is placed between the upper support plate 901 and the lower support plate 903. The connecting plate 12 is slidably connected to the upper support plate 901, and a receiving cavity 904 is provided on the lower support plate 903 to accommodate the automatic tightening gun 10 and the cylinder 11. In this way, the automatic tightening gun 10 on the lower support plate 903 can directly bolt the connecting plate 12 to the top plate of the hydraulic support 1 under the push of the cylinder 11. After installation, the hydraulic telescopic support 13 moves out towards the middle of the fully mechanized mining face along the length direction of the top plate of the hydraulic support 1, and then descends to the original position through the telescopic movement of the hydraulic telescopic support 13.

[0025] Since the second hydraulic cylinder 4 and the third hydraulic cylinder 5 are also fixedly installed on both sides of the first hydraulic cylinder 3, in order to ensure the stability of the installation, a plurality of support rods 6 are provided on the upper support plate 901 to support the second hydraulic cylinder 4 and the third hydraulic cylinder 5.

[0026] The upper support plate 901 has a slide rail 902 for the first hydraulic cylinder 3 and the connecting plate 12 to slide through. A guide strip 905 is provided on the inner wall of the slide rail 902. The connecting plate 12 has a groove that matches the slide rail 902 and the guide strip 905. When installing the first hydraulic cylinder 3, the construction personnel directly mate the groove of the connecting plate 12 with the guide strip 905 of the upper support plate 901, allowing it to slide along the slide rail 902. The guide strip 905 can limit the length of the first hydraulic cylinder 3, preventing it from falling off the slide rail 902. To prevent the first hydraulic cylinder 3 from detaching along the length of the slide rail 902, the length of the slide rail 902 is less than the length of the conveyor frame 9.

[0027] To facilitate the movement of the conveyor frame 9 to a suitable position, a drive mechanism 14 is also provided at the bottom of the conveyor frame 9. The drive mechanism 14 includes two self-locking casters 1401, two drive wheels 1402, and a motor 1403 for driving the drive wheels 1402 to rotate. After the drive wheels 1402 move the conveyor frame 9 to a suitable position under the drive of the motor 1403, the self-locking casters 1401 can lock themselves to prevent the drive wheels 1402 from continuing to move and causing the entire installation device to move.

[0028] The installation method, based on the aforementioned end support extension device, includes the following steps: setting up a hydraulic support 1 for support in the fully mechanized mining face;

[0029] Drive the first hydraulic cylinder 3 from bottom to top through the channel 8 until the connecting plate 12 contacts the top plate of the hydraulic support 1;

[0030] Connect the connecting plate 12 to the top plate of the hydraulic support 1;

[0031] Drive the first hydraulic cylinder 3 to lift the support plate 2 upwards until the support plate 2 contacts the roof of the fully mechanized mining face.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An installation device for installing an end support extension device onto a hydraulic support (1), the end support extension device comprising a first hydraulic cylinder (3) disposed on the top plate of the hydraulic support (1) for supporting the longwall mining face, the piston of the first hydraulic cylinder (3) being fixedly connected to a support plate (2), the bottom of the first hydraulic cylinder (3) being fixedly connected to a connecting plate (12), the connecting plate (12) being detachably connected to the top plate of the hydraulic support (1), and the top plate of the hydraulic support (1) being provided with multiple channels (8) for the first hydraulic cylinder (3) to pass through, characterized in that: The installation device includes a conveyor frame (9) and a hydraulic telescopic support (13) for lifting the conveyor frame (9). The conveyor frame (9) includes an upper support plate (901) and a lower support plate (903). A gap is formed between the upper support plate (901) and the lower support plate (903) to accommodate the top plate of the hydraulic support (1). The connecting plate (12) is slidably connected to the upper support plate (901). The lower support plate (903) is detachably equipped with an automatic tightening gun (10). The bottom of the automatic tightening gun (10) is equipped with a cylinder (11) for pushing the automatic tightening gun (10) to move. The connecting plate (12) is connected to the top plate of the hydraulic support (1) by bolts.

2. The installation device as described in claim 1, characterized in that: The first hydraulic cylinder (3) is fixedly provided with a second hydraulic cylinder (4) and a third hydraulic cylinder (5) on both sides respectively, and the plungers of the second hydraulic cylinder (4) and the third hydraulic cylinder (5) can abut against the support plate (2). The first hydraulic cylinder (3), the second hydraulic cylinder (4) and the third hydraulic cylinder (5) can all pass through the channel (8).

3. The installation device as described in claim 2, characterized in that: The upper support plate (901) has a slide (902) through which the first hydraulic cylinder (3) and the connecting plate (12) slide. A guide strip (905) is provided on the inner wall of the slide (902). The connecting plate (12) has a groove that matches the slide (902) and the guide strip (905).

4. The installation device as described in claim 2, characterized in that: The bottom of the conveyor frame (9) is also provided with a drive mechanism (14), which includes two self-locking casters (1401), two drive wheels (1402) and a motor (1403) for driving the drive wheels (1402) to rotate.

5. The installation device as described in claim 2, characterized in that: The upper support plate (901) is provided with a plurality of support rods (6) for supporting the second hydraulic cylinder (4) and the third hydraulic cylinder (5).

6. The installation device as described in claim 3, characterized in that: The length of the slide (902) is less than the length of the conveyor frame (9).

7. The installation device as described in claim 3, characterized in that: The lower support plate (903) has a receiving cavity (904) for accommodating the automatic tightening gun (10) and the cylinder (11).

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