Hydraulic lifting supporting roof protection device and assembly

Abstract

The invention provides a hydraulic lifting supporting roof protection device and assembly, and the device comprises a hydraulic box which is internally provided with a containing cavity and is provided with an oil inlet and an oil outlet which are communicated with the containing cavity; the plurality of hydraulic lifting columns are respectively fixed on the first surface of the hydraulic box; and one oil injection pipe corresponds to one hydraulic lifting column, the first end of each oil injection pipe penetrates through the hydraulic box and communicates with the containing cavity, and the second end of each oil injection pipe communicates with an oil injection opening of the corresponding hydraulic lifting column. By the adoption of the hydraulic lifting device, hydraulic oil is injected into the hydraulic box, the multiple hydraulic lifting columns can be driven to rise separately, the hydraulic lifting columns are independent of one another and do not interfere with one another, and the hydraulic lifting columns can rise by different heights according to fluctuation of the roadway top plates and make independent contact with the corresponding roadway top plates, so that the hydraulic lifting columns make full contact with the fluctuating top plates, and the contact area is increased; the roadway roof is comprehensively supported, and the roof can be effectively and stably supported.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel roof support, and in particular to a hydraulic lifting support roof protection device and an assembly. Background Art

[0002] The problem of coal mine roadway roof support has always been a key research object. At present, support equipment such as advanced hydraulic supports are the main devices for supporting mining roadways. With the continuous advancement of underground projects, the requirements for roof support technology are increasing.

[0003] The top beam structure of the hydraulic support is mostly flat, while the tunnel roof is mostly uneven. Therefore, when the flat top beam of the hydraulic support contacts the tunnel roof, it only contacts the protruding part. The contact between the two is not sufficient, making it difficult to achieve comprehensive support for the tunnel roof and difficult to effectively support the roof, which increases safety hazards. Summary of the Invention

[0004] In view of this, the present invention provides a hydraulic lifting support roof protection device and assembly to solve the above technical problems.

[0005] The hydraulic lifting support roof protection device provided by the present invention includes:

[0006] A hydraulic box, wherein the hydraulic box is provided with a receiving cavity and is provided with an oil inlet and an oil outlet communicating with the receiving cavity;

[0007] a plurality of hydraulic lifting columns, each of which is fixed on the first surface of the hydraulic box;

[0008] Multiple oil filling pipes, one oil filling pipe corresponds to one hydraulic lifting column, a first end of the oil filling pipe passes through the hydraulic box and is connected to the accommodating cavity, and a second end of the oil filling pipe is connected to the oil filling port of the hydraulic lifting column.

[0009] Optionally, the hydraulic lifting support roof protection device further includes: a fixed plate, the fixed plate is fixedly connected to the first surface of the hydraulic box, and the hydraulic lifting column is fixedly connected to a side of the fixed plate facing away from the hydraulic box.

[0010] Optionally, the fixing plate is formed by splicing a plurality of mounting plates, and one mounting plate corresponds to one hydraulic lifting column.

[0011] Optionally, the mounting plate is detachably connected to the hydraulic box.

[0012] Optionally, the plurality of hydraulic lifting columns are distributed in a rectangular array.

[0013] Optionally, a sealing ring is provided between the outer wall of the oil filling pipe and the inner wall of the oil filling port.

[0014] Optionally, the hydraulic lifting support roof protection device further includes: an outer frame, which is fixedly connected to the first surface of the hydraulic box and surrounds the hydraulic lifting column.

[0015] Optionally, the oil filling pipe is integrally formed with the hydraulic box.

[0016] Optionally, the hydraulic lifting support roof protection device also includes: an oil storage tank, the oil storage tank is provided with an oil delivery port and an oil return port, the oil delivery port is connected to an oil delivery pipe, a first valve and a first oil pump are installed on the oil delivery pipe, the oil return port is connected to an oil return pipe, a second valve and a second oil pump are installed on the oil return pipe, the oil delivery pipe is connected to the oil inlet of the hydraulic box, and the oil return pipe is connected to the oil outlet of the hydraulic box.

[0017] The present invention also provides a hydraulic lifting support roof guard assembly, including a hydraulic support and a hydraulic lifting support roof guard device as described above, wherein the hydraulic box of the hydraulic lifting support roof guard device is fixed to the top beam of the hydraulic support.

[0018] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0019] By adopting the hydraulic lifting support roof protection device and assembly of the present invention, hydraulic oil is injected into the hydraulic box to drive multiple hydraulic lifting columns to rise separately, and the hydraulic lifting columns are independent of each other and do not interfere with each other. They can rise to different heights according to the ups and downs of the tunnel roof and independently contact with their corresponding tunnel roofs, thereby fully contacting the ups and downs of the roof, increasing the contact area, achieving comprehensive support for the tunnel roof, and effectively and stably supporting the roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a hydraulic lifting support roof protection device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection relationship between the hydraulic box and the fixed plate of the hydraulic lifting support roof guard according to one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection relationship between the hydraulic lifting column and the mounting plate of the hydraulic lifting support roof protection device according to one embodiment of the present invention.

[0023] Reference numerals:

[0024] 1: Hydraulic box; 2: Hydraulic lifting column; 3: Oil filling pipe; 4: Fixing plate; 41: Mounting plate; 5: Outer frame. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0026] Figure 1 This is a schematic diagram of a hydraulic lifting support roof protection device according to an embodiment of the present invention. Figure 1 As shown, the hydraulic lifting support and roof protection device includes a hydraulic box 1, multiple hydraulic lifting columns 2, and multiple oil filling pipes 3. The hydraulic box 1 is provided with a storage chamber and has an oil inlet and outlet connected to the storage chamber. The multiple hydraulic lifting columns 2 are respectively fixed to the first surface of the hydraulic box 1. There is one oil filling pipe 3 corresponding to each hydraulic lifting column 2. The first end of the oil filling pipe 3 passes through the hydraulic box 1 and connects to the storage chamber. The second end of the oil filling pipe 3 is connected to the oil filling port of the hydraulic lifting column 2.

[0027] During use, the hydraulic box 1 is fixed to the top beam of the hydraulic support, and the hydraulic support performs the column raising operation. When the hydraulic lifting column 2 approaches the roadway roof, the column raising stops. At this time, hydraulic oil is injected into the hydraulic box 1 through the oil inlet. After the hydraulic box 1 is filled with hydraulic oil, the hydraulic oil is injected into the oil filling port of the hydraulic lifting column 2 through the oil filling pipe 3, thereby raising the hydraulic lifting column 2 until it contacts the roadway roof at the corresponding position and stops rising, thereby effectively supporting the roadway roof. Because the roadway roof is undulating and not a flat surface, the hydraulic lifting columns 2 at different positions are raised to different heights and contact the roadway roof at the corresponding position, thereby achieving effective support for the roadway roof within the entire range corresponding to the top beam of the hydraulic support. When coal mining is complete and the hydraulic support needs to be moved, the hydraulic oil in the hydraulic tank 1 is drained through the oil outlet. The hydraulic oil in the hydraulic lifting columns 2, no longer supported by the hydraulic oil in the hydraulic tank 1, flows back into the hydraulic tank 1 through the oil inlet. As the internal hydraulic oil flows back into the hydraulic tank 1, the hydraulic lifting columns 2 also descend under their own gravity and no longer contact the roadway roof. When all hydraulic lifting columns 2 are no longer in contact with the roadway roof, the hydraulic support can be moved.

[0028] By adopting the hydraulic lifting support roof protection device of the present invention, by injecting hydraulic oil into the hydraulic box 1, multiple hydraulic lifting columns 2 can be driven to rise separately, and the hydraulic lifting columns 2 are independent of each other and do not interfere with each other. They can rise to different heights according to the ups and downs of the tunnel roof and independently contact with their corresponding tunnel roofs, thereby fully contacting the ups and downs of the roof, increasing the contact area, achieving comprehensive support for the tunnel roof, and effectively and stably supporting the roof.

[0029] like Figure 1 As shown, in this embodiment, the hydraulic box 1 is a hollow rectangular parallelepiped with multiple hydraulic lifting columns 2 fixed to its upper surface. Each hydraulic lifting column 2 is independently connected to the hydraulic box 1 without interfering with each other. The lower surface of the hydraulic box 1 is used for fixed connection to the top beam of the hydraulic support. The hydraulic lifting columns 2 include a column body and a cylinder, with an oil filling port at the center of the bottom. The hydraulic lifting columns 2 are mature existing technology, and their specific structure and operating principle will not be detailed here. The specific shape and size of the hydraulic box 1 can be adjusted according to actual application, as can the number of hydraulic lifting columns 2 and their placement on the hydraulic box 1.

[0030] Figure 2 This is a schematic diagram of the connection between the hydraulic box and the fixed plate of the hydraulic lifting support roof protection device according to one embodiment of the present invention. Figure 1 and Figure 2 As shown, the hydraulic lifting support and roof protection device optionally further includes a fixing plate 4, which is fixedly connected to the first surface of the hydraulic box 1, and the hydraulic lifting columns 2 are fixedly connected to the side of the fixing plate 4 facing away from the hydraulic box 1. With the fixing plate 4, all hydraulic lifting columns 2 can be mounted on the fixing plate 4, making the installation process more flexible and easier to operate.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, the fixing plate 4 is configured as a rectangular plate whose cross-section matches that of the hydraulic box 1. The fixing plate 4 is detachably connected to the hydraulic box 1, and the hydraulic lifting column 2 is fixedly connected to the upper surface of the fixing plate 4. The oil filling pipe 3 passes through the fixing plate 4 and connects the oil filling port of the hydraulic box 1 to the hydraulic lifting column 2.

[0032] Figure 3 This is a schematic diagram of the connection between the hydraulic lifting column and the mounting plate of the hydraulic lifting support roof guard device according to one embodiment of the present invention. Figure 2 and Figure 3 As shown, optionally, the fixing plate 4 is composed of multiple mounting plates 41, and one mounting plate 41 corresponds to one hydraulic lifting column 2. This arrangement facilitates that when a mounting plate 41 at a certain position is damaged, the mounting plate 41 can be independently removed and replaced without affecting the mounting plates 41 at other positions.

[0033] like Figure 2 and Figure 3 As shown, in this embodiment, mounting plates 41 are configured as square plates, each connected to the upper surface of the hydraulic box 1. The edges of adjacent mounting plates 41 are parallel and in contact, forming a fixed plate 4. A hydraulic lifting column 2 is secured to the center of each mounting plate 41, and an oil injection pipe 3 extends through the center of each mounting plate 41. The specific number and shape of mounting plates 41 can be adjusted according to actual application.

[0034] Optionally, the mounting plate 41 is detachably connected to the hydraulic box 1. The detachable connection facilitates rapid disassembly and installation when the mounting plate 41 is damaged.

[0035] In this embodiment, the mounting plate 41 is bolted to the hydraulic box 1. Other detachable connection methods may also be used depending on actual application conditions.

[0036] Optionally, the plurality of hydraulic lifting columns 2 are arranged in a rectangular array. This arrangement allows the plurality of hydraulic lifting columns 2 to cover the entire surface of the hydraulic box 1 to the greatest extent possible, thereby maximizing the contact area with the tunnel roof and achieving more effective and stable support for the tunnel roof.

[0037] like Figure 1 As shown, in this embodiment, there are fifteen rows and four columns, with a total of sixty hydraulic lifting columns 2, which are neatly arranged on the hydraulic box 1, without wasting the upper surface area of ​​the hydraulic box 1 or space. More hydraulic lifting columns 2 are arranged within a limited range on the upper surface of the hydraulic box 1, so that when hydraulic oil is injected into the hydraulic box 1, more hydraulic lifting columns 2 can be raised, thereby increasing the contact support area with the tunnel roof to a greater extent.

[0038] Optionally, a sealing ring is provided between the outer wall of the oil filling pipe 3 and the inner wall of the oil filling port. This seals the gap between the oil filling pipe 3 and the oil filling port of the hydraulic lifting column 2, preventing the hydraulic oil injected into the hydraulic lifting column 2 from falling back into the hydraulic tank 1 through this gap and affecting the lifting process of the hydraulic lifting column 2, thereby ensuring the stability of the hydraulic lifting column 2's support of the roof. Depending on the actual application, the sealing ring can be fixed to the inner wall of the oil filling port or can be installed around the outer wall of the oil filling pipe 3.

[0039] Optionally, the hydraulic lift support and roof guard device further includes an outer frame 5, which is fixedly connected to the first surface of the hydraulic box 1 and encloses the hydraulic lift columns 2. This arrangement further limits the hydraulic lift columns 2 with the help of the outer frame 5, preventing the connection between the hydraulic lift columns 2 and the hydraulic box 1 from failing, causing the hydraulic lift columns 2 to move horizontally or even fall off the hydraulic box 1.

[0040] like Figure 1As shown, in this embodiment, the outer frame 5 is configured in a rectangular ring shape and is fixedly connected to the edge of the upper surface of the hydraulic box 1. The hydraulic lifting columns 2 are all fixed to the upper surface of the hydraulic box 1 within the outer frame 5, and the hydraulic lifting columns 2 around their outer edges abut against the inner wall of the outer frame 5. If the hydraulic lifting columns 2 lose connection with the upper surface of the hydraulic box 1, they will not shake relative to the hydraulic box 1 and will not fall off the upper surface of the hydraulic box 1 due to the restraining effect of the outer frame 5.

[0041] Optionally, the oil filling pipe 3 is integrally formed with the hydraulic box 1. The use of an integral forming process simplifies the manufacturing process and saves time in connecting the oil filling pipe 3 with the hydraulic box 1.

[0042] like Figure 2 As shown, the oil filling pipe 3 is integrally formed with the hydraulic box 1. When a mounting plate 41 is provided, a hole is pre-opened at the position of the mounting plate 41 corresponding to the oil filling pipe 3. When the mounting plate 41 is laid on the upper surface of the hydraulic box 1, the oil filling pipe 3 passes through the pre-opened hole on the mounting plate 41 and is connected to the oil filling port of the hydraulic lifting column 2 fixed to the mounting plate 41.

[0043] Optionally, the hydraulic lifting support roof protection device also includes an oil storage tank (not shown), which is provided with an oil delivery port and an oil return port, the oil delivery port is connected to an oil delivery pipe, on which a first valve and a first oil pump are installed, the oil return port is connected to an oil return pipe, on which a second valve and a second oil pump are installed, the oil delivery pipe is connected to the oil inlet of the hydraulic box 1, and the oil return pipe is connected to the oil outlet of the hydraulic box 1.

[0044] When the hydraulic lifting column 2 needs to be raised, the first valve and the first oil pump are opened, and the hydraulic oil in the oil storage tank is transported through the oil delivery pipe to the hydraulic box 1, and further to the hydraulic lifting column 2, driving the hydraulic lifting column 2 to rise. When the support provided by the hydraulic lifting column 2 is no longer needed, the first valve and the first oil pump are closed, and the second valve and the second oil pump are opened, and the hydraulic oil in the hydraulic box 1 is transported back to the oil storage tank through the oil return pipe. Then, the hydraulic oil in the hydraulic lifting column 2 also falls back into the hydraulic box 1 and is further transported back to the oil storage tank, so that the hydraulic lifting column 2 falls back and no longer supports the roof.

[0045] The present invention also provides a hydraulic lifting support roof guard assembly, including a hydraulic support and a hydraulic lifting support roof guard device described in any of the above embodiments, wherein the hydraulic box 1 of the hydraulic lifting support roof guard device is fixed to the top beam of the hydraulic support.

[0046] By adopting the hydraulic lifting support roof protection assembly of the present invention, hydraulic oil is injected into the hydraulic box 1, which can drive multiple hydraulic lifting columns 2 to rise separately. The hydraulic lifting columns 2 are independent of each other and do not interfere with each other. They can rise to different heights according to the ups and downs of the tunnel roof and independently contact with their corresponding tunnel roofs, thereby fully contacting the ups and downs of the roof, increasing the contact area, achieving comprehensive support for the tunnel roof, and effectively and stably supporting the roof.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic lifting support roof protection device, characterized in that: include: A hydraulic box, wherein the hydraulic box is provided with a receiving cavity and is provided with an oil inlet and an oil outlet communicating with the receiving cavity; a plurality of hydraulic lifting columns, each of which is fixed on the first surface of the hydraulic box; Multiple oil filling pipes, one oil filling pipe corresponds to one hydraulic lifting column, a first end of the oil filling pipe passes through the hydraulic box and is connected to the accommodating cavity, and a second end of the oil filling pipe is connected to the oil filling port of the hydraulic lifting column.

2. The hydraulic lifting support roof protection device according to claim 1 is characterized in that: Also includes: A fixed plate is fixedly connected to the first surface of the hydraulic box, and the hydraulic lifting column is fixedly connected to a side of the fixed plate facing away from the hydraulic box.

3. The hydraulic lifting support roof protection device according to claim 2 is characterized in that: The fixing plate is formed by splicing a plurality of mounting plates, and one mounting plate corresponds to one hydraulic lifting column.

4. The hydraulic lifting support roof protection device according to claim 3 is characterized in that: The mounting plate is detachably connected to the hydraulic box.

5. The hydraulic lifting support roof protection device according to any one of claims 1 to 4, characterized in that: The plurality of hydraulic lifting columns are distributed in a rectangular array.

6. The hydraulic lifting support roof protection device according to any one of claims 1 to 4, characterized in that: A sealing ring is provided between the outer wall of the oil filling pipe and the inner wall of the oil filling port.

7. The hydraulic lifting support roof protection device according to any one of claims 1 to 4, characterized in that: Also includes: An outer frame is fixedly connected to the first surface of the hydraulic box and surrounds the hydraulic lifting column.

8. The hydraulic lifting support roof protection device according to any one of claims 1 to 4, characterized in that: The oil filling pipe is integrally formed with the hydraulic box.

9. The hydraulic lifting support roof protection device according to any one of claims 1 to 4, characterized in that: Also includes: An oil storage tank is provided with an oil delivery port and an oil return port, the oil delivery port is connected to an oil delivery pipe, a first valve and a first oil pump are installed on the oil delivery pipe, the oil return port is connected to an oil return pipe, a second valve and a second oil pump are installed on the oil return pipe, the oil delivery pipe is connected to the oil inlet of the hydraulic box, and the oil return pipe is connected to the oil outlet of the hydraulic box.

10. A hydraulic lifting support roof assembly, comprising a hydraulic support, characterized in that: It also includes the hydraulic lifting support roof protection device according to any one of claims 1 to 9, wherein the hydraulic box of the hydraulic lifting support roof protection device is fixed to the top beam of the hydraulic support.

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