Frame type connecting base for forepoling of transportation roadway with super-large mining height

Abstract

The utility model relates to a forepoling frame-type connecting base for a transportation roadway with an ultra-large mining height, and belongs to the technical field of fully-mechanized coal mining support. Comprising two base assembly bodies which are in bilateral symmetry, a left pushing frame and a right pushing frame which are distributed left and right are arranged between the two base assembly bodies, the left pushing frame is connected with the base assembly body on the left side through a pin shaft assembly, the right pushing frame is connected with the base assembly body on the right side through a pin shaft assembly, and the left pushing frame is connected with the right pushing frame. The front end and the rear end of the joint of the left pushing frame and the right pushing frame are each provided with a closed protective cover. The problem that the bottom connection stability of an existing mining transportation roadway advanced hydraulic support is poor is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fully mechanized coal mining support, and particularly relates to a frame-type connecting base for an extra-large mining height roadway advance support. Background Art

[0002] In existing advance hydraulic supports for mine roadways, they are usually arranged in groups of two on both sides of the roadway, with a machine-passing space in the middle, and the pushing method is left-right stepping self-shifting. The structural parts of such supports are small in size and light in weight, which is convenient for transportation and underground installation, and has strong adaptability to the roof. However, they have poor stability, are prone to deviation during the pushing process, and the length of the supporting loader is long, making them inapplicable to the support of roadways in extra-large mining height working faces. Considering the current form of green mining in China, there is a higher demand for resource development efficiency. The construction of extra-large mining height working faces is developing rapidly, and the development of advance hydraulic supports for extra-large mining height roadways is an inevitable trend. Considering the characteristics of roadways in extra-large mining height working faces, it is more reasonable to arrange advance supports for extra-large mining height roadways in groups of two, with front-back stepping self-shifting, stronger inclination adaptability, higher stability, and higher support efficiency. Content of the Utility Model

[0003] The utility model overcomes the deficiencies of the prior art and provides a frame-type connecting base for an extra-large mining height roadway advance support, solving the problem of poor bottom connection stability of existing advance hydraulic supports for mine roadways.

[0004] To achieve the above object, the utility model is realized by the following technical solutions.

[0005] A frame-type connecting base for an extra-large mining height roadway advance support includes two symmetrically arranged base groups on the left and right. Between the two base groups, there are a left pushing frame and a right pushing frame distributed left and right. The left pushing frame is connected to the left base group through a pin shaft assembly, and the right pushing frame is connected to the right base group through a pin shaft assembly. The left pushing frame and the right pushing frame are connected to each other, and at the front and rear ends of the connection between the left pushing frame and the right pushing frame, there is a closed protective cover respectively.

[0006] Furthermore, on the front and rear side end faces of the left pushing frame, a first coal guiding slope is fixedly arranged respectively. The upper end face of the first coal guiding slope is inclined downward at the end far from the left pushing frame and is connected to the lower end face of the first coal guiding slope. At the connection between the upper end face and the lower end face of the first coal guiding slope, a round steel is fixedly arranged. On the side end faces of the front and rear first coal guiding slopes close to the right pushing frame, two symmetrically arranged locking shaft ear plates are fixedly arranged respectively, and a through locking shaft hole is arranged on each locking shaft ear plate.

[0007] Further, a first double-hole rod head is fixedly arranged in the middle of the end face on the side where the left pushing frame is close to the right pushing frame. There are two left-right symmetric first docking holes on the first double-hole rod head, and the first docking holes communicate with the front and rear end faces of the first double-hole rod head.

[0008] Further, a second coal guiding slope is fixedly arranged at the front and rear end faces of the right pushing frame respectively. The upper end face of the second coal guiding slope slopes downward at the end away from the right pushing frame and is connected to the lower end face of the second coal guiding slope. A round steel is fixedly arranged at the connection of the upper end face and the lower end face of the second coal guiding slope; on the side end faces of the front and rear two second coal guiding slopes close to the left pushing frame, two front-rear symmetric locking shaft ear plates are fixedly arranged respectively, and a through locking shaft hole is arranged on each locking shaft ear plate.

[0009] Further, two front-rear symmetric second double-hole rod heads are fixedly arranged on the end face of the right pushing frame close to the left pushing frame. There are two left-right symmetric first docking holes on the second double-hole rod head, and the second docking holes communicate with the front and rear end faces of the second double-hole rod head.

[0010] Further, the first double-hole rod head of the left pushing frame is inserted between the two second double-hole rod heads of the right pushing frame, and the two first docking holes on the first double-hole rod head are aligned with the two second docking holes on the second double-hole rod head; a fixing pin shaft is inserted between the aligned first docking hole and the second docking hole, so as to connect the left pushing frame and the right pushing frame.

[0011] Further, the pin shaft assembly includes a fixing frame and two single-hole rod heads; the fixing frame is of a square box structure, and the fixing frame is fixedly arranged on the side end face where the two base assemblies are close to each other. There are two front and rear installation grooves on the side end face of the fixing frame close to the other base assembly; on the side end face of the left pushing frame and the right pushing frame close to the same side base assembly, two front and rear single-hole rod heads are fixedly arranged respectively, and a through fixing hole is arranged on each single-hole rod head.

[0012] Further, the two single-hole rod heads on the left pushing frame and the right pushing frame are respectively inserted into the front and rear two installation grooves of the fixing frame on the same side, and two fixing pin shafts are respectively inserted into the fixing holes of the fixing frame and the two single-hole rod heads, so as to connect the two single-hole rod heads and the fixing frame, and further connect the left pushing frame and the right pushing frame with the base assemblies on both sides respectively.

[0013] Further, a closed shield is provided between the first coal guiding slopes on the front side and the second coal guiding slopes; a closed shield is also provided between the first coal guiding slopes on the rear side and the second coal guiding slopes; the closed shield includes a triangular fixing plate located in a vertical plane in the front-rear direction. A third coal guiding slope is fixedly arranged on the inclined surface of the fixing plate. The third coal guiding slope is flush with the first coal guiding slopes and the second coal guiding slopes on both sides. A round steel is fixedly arranged at the lower side edge of the third coal guiding slope; a mounting plate is fixedly arranged at the vertical end surface of the fixing plate. The mounting plate is located in a vertical plane in the left-right direction. An installation hole is respectively arranged at the left and right ends of the mounting plate. The left and right ends of the mounting plate are respectively inserted between two locking shaft ear plates on the first coal guiding slope and the second coal guiding slope, and the installation holes on the mounting plate correspond to the locking shaft holes on the locking shaft ear plates. The mounting plate and the locking shaft ear plates are fixed by passing a locking shaft through the installation holes and the locking shaft holes, so as to fixedly connect the closed shield with the first coal guiding slopes and the second coal guiding slopes on both sides.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows:

[0015] 1. Solve the bottom connection problem of the advanced hydraulic support in the ultra-large mining height transportation roadway;

[0016] 2. Better adapt to the complex floor conditions underground and prevent abnormal deflection of the posture of the self-shifting of the support;

[0017] 3. The left pushing frame and the right pushing frame can be interchangeably installed, with simple structure, high degree of mechanization, and convenient disassembly and assembly;

[0018] 4. The overall design between the two base assemblies is a gradient diversion design and a round steel anti-scouring design at the bottom, which is not easy to be damaged, has good hinge effect, and flexible movement;

[0019] 5. The device has simple structure, high degree of mechanization, low manufacturing cost, simple installation and disassembly, and convenient transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further describes the present utility model in detail with reference to the drawings:

[0021] Figure 1 is the overall structural schematic diagram of the present utility model;

[0022] Figure 2 is the structural schematic diagram of the left pushing frame;

[0023] Figure 3 is the structural schematic diagram of the right pushing frame;

[0024] Figure 4 is the connection schematic diagram between the base assembly and the fixed frame;

[0025] Figure 5It is a schematic structural diagram of a closed shield;

[0026] Among them, 1 is the base assembly, 2 is the left pushing frame, 3 is the right pushing frame, 4 is the pin shaft assembly, 5 is the closed shield, 6 is the first coal guiding slope, 7 is the locking shaft ear plate, 8 is the first double-hole rod head, 9 is the second coal guiding slope, 10 is the second double-hole rod head, 11 is the fixed frame, 12 is the single-hole rod head, 13 is the installation groove, 14 is the third coal guiding slope, 15 is the round steel, and 16 is the installation plate. Specific embodiments

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. The technical solutions of the present utility model will be described in detail below in combination with embodiments and drawings, but the protection scope is not limited by this.

[0028] As Figure 1 —5 shows, the present utility model provides a frame-connected base for an extra-large mining height transportation roadway advanced support, which includes two base assemblies 1 that are symmetric left and right. A left pushing frame 2 and a right pushing frame 3 are arranged left and right between the two base assemblies 1. The left pushing frame 2 is connected to the left base assembly 1 through a pin shaft assembly 4, and the right pushing frame 3 is connected to the right base assembly 1 through a pin shaft assembly 4. The left pushing frame 2 and the right pushing frame 3 are connected to each other, and a closed shield 5 is respectively arranged at the front and rear ends of the connection part between the left pushing frame 2 and the right pushing frame 3.

[0029] One side end faces of the two base assemblies 1 close to each other are located in the vertical plane in the front-rear direction.

[0030] The left pushing frame 2 is a horizontally arranged cubic structure. A first coal guiding slope 6 is respectively fixedly arranged at the front and rear side end faces of the left pushing frame 2. The upper end face of the first coal guiding slope 6 is inclined downward at the end far from the left pushing frame 2 and is connected to the lower end face of the first coal guiding slope 6. The front and rear first coal guiding slopes 6 are symmetrically arranged. A round steel 15 is fixedly arranged at the connection part between the upper end face and the lower end face of the first coal guiding slope 6. Two symmetric front and rear locking shaft ear plates 7 are respectively fixedly arranged on the side end faces of the front and rear first coal guiding slopes 6 close to the right pushing frame 3, and a through locking shaft hole is arranged on each locking shaft ear plate 7.

[0031] A first double-hole rod head 8 is fixedly arranged in the middle of the side end face of the left pushing frame 2 close to the right pushing frame 3. The upper end face of the first double-hole rod head 8 is flush with the upper end face of the left pushing frame 2. Two symmetric left and right first docking holes are arranged on the first double-hole rod head 8, and the first docking holes communicate with the front and rear end faces of the first double-hole rod head 8.

[0032] The right shifting frame 3 is a horizontally arranged cubic structure. A second coal guiding slope 9 is fixedly arranged at each of the front and rear end faces of the right shifting frame 3. One end of the upper end face of the second coal guiding slope 9, which is far from the right shifting frame 3, inclines downward and is connected to the lower end face of the second coal guiding slope 9. The front and rear second coal guiding slopes 9 are symmetrically arranged. A round steel 15 is fixedly arranged at the connection between the upper end face and the lower end face of the second coal guiding slope 9. Two symmetric front and rear locking shaft ear plates 7 are fixedly arranged on the side faces of the front and rear second coal guiding slopes 9 close to the left shifting frame 2, and a through locking shaft hole is arranged on each locking shaft ear plate 7.

[0033] Two symmetric front and rear second double-hole rod heads 10 are fixedly arranged on the side face of the right shifting frame 3 close to the left shifting frame 2, and the upper end face of the second double-hole rod head 10 is flush with the upper end face of the right shifting frame 3. Two symmetric left and right first docking holes are arranged on the second double-hole rod head 10, and the second docking holes communicate with the front and rear end faces of the second double-hole rod head 10.

[0034] The first double-hole rod head 8 of the left shifting frame 2 is inserted between the two second double-hole rod heads 10 of the right shifting frame 3, and the two first docking holes on the first double-hole rod head 8 are aligned with the two second docking holes on the second double-hole rod head 10. A fixing pin shaft is inserted between the aligned first docking hole and the second docking hole, thereby connecting the left shifting frame 2 and the right shifting frame 3.

[0035] The pin shaft assembly 4 includes a fixing frame 11 and two single-hole rod heads 12. The fixing frame 11 is a square box structure. The fixing frame 11 is fixedly arranged on the side face of one of the two base assemblies 1 close to the other. Two front and rear mounting grooves 13 are arranged on the side face of the fixing frame 11 close to the other base assembly 1. Two front and rear single-hole rod heads 12 are fixedly arranged on the side faces of the left shifting frame 2 and the right shifting frame 3 close to the same side base assembly 1. The single-hole rod heads 12 are flush with the upper end faces of the left shifting frame 2 and the right shifting frame 3, and a through fixing hole is arranged on each single-hole rod head 12. The two single-hole rod heads 12 on the left shifting frame 2 and the right shifting frame 3 are respectively inserted into the two front and rear mounting grooves 13 of the fixing frame 11 on the same side, and two fixing pin shafts are respectively inserted into the fixing holes of the fixing frame 11 and the two single-hole rod heads 12, thereby connecting the two single-hole rod heads 12 and the fixing frame 11, and further connecting the left shifting frame 2 and the right shifting frame 3 with the base assemblies 1 on both sides respectively.

[0036] A closed shield 5 is provided between the first coal guiding slope 6 and the second coal guiding slope 9 on the front side, and a closed shield 5 is also provided between the first coal guiding slope 6 and the second coal guiding slope 9 on the rear side. The closed shield 5 includes a triangular fixing plate located in a vertical plane in the front-rear direction. A third coal guiding slope 14 is fixedly arranged on the inclined surface of the fixing plate. The third coal guiding slope 14 is flush with the first coal guiding slopes 6 and the second coal guiding slopes 9 on both sides. A round steel 15 is fixedly arranged at the lower side edge of the third coal guiding slope 14. A mounting plate 16 is fixedly arranged at the vertical end surface of the fixing plate. The mounting plate 16 is located in a vertical plane in the left-right direction. Mounting holes are respectively arranged at the left and right ends of the mounting plate 16. The left and right ends of the mounting plate 16 are respectively inserted between two locking shaft ear plates 7 on the first coal guiding slope 6 and the second coal guiding slope 9, and the mounting holes on the mounting plate 16 correspond to the locking shaft holes on the locking shaft ear plates 7. The mounting plate 16 and the locking shaft ear plates 7 are fixed by passing a locking shaft through the mounting holes and the locking shaft holes, so as to fixedly connect the closed shield 5 with the first coal guiding slopes 6 and the second coal guiding slopes 9 on both sides.

[0037] The inclined surface of the third coal guiding slope 14 of the closed shield 5 is flush with the inclined surfaces of the first coal guiding slope 6 and the second coal guiding slope 9, which can prevent the accumulation of coal slime and crushed gangue inside the roadway when the support moves forward, forming a pushing resistance. The left pushing frame 2 and the right pushing frame 3 can be installed by exchanging positions. The roadway advanced support applicable to the connecting base provided by the present invention is a front-rear structure with two supports in a group, and the pushing method is "front-rear stepping self-shifting".

[0038] A frame-type connecting base for an ultra-large mining height transportation roadway advanced support provided by the present invention combines the actual working conditions of ultra-large mining height, and frames the front-section base of the traditional roadway advanced support to solve the bottom connection problem of the ultra-large mining height transportation roadway advanced hydraulic support, better adapt to the complex floor working conditions underground, and prevent the abnormal deflection of the posture of the support during self-shifting. The left pushing frame 2 and the right pushing frame 3 can be installed by exchanging positions, with simple structure, high mechanization degree, and convenient disassembly and assembly. At the same time, there are also diversion and anti-bottom gouging designs. The device has been actually used in the mine, with strong adaptability, simple and reasonable structure, and convenient disassembly and assembly, and has been recognized by the mine side, providing reference for the design of the roadway advanced support for the ultra-large mining height working face in the future.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An ultra-large mining height advance support frame-type connecting base, characterized in that: It includes two left - and - right symmetric base assemblies (1). Between the two base assemblies (1), there are a left push - frame (2) and a right push - frame (3) distributed left - and - right. The left push - frame (2) is connected to the left - hand base assembly (1) through a pin - shaft assembly (4), and the right push - frame (3) is connected to the right - hand base assembly (1) through a pin - shaft assembly (4). The left push - frame (2) is connected to the right push - frame (3). At the front and rear ends of the connection between the left push - frame (2) and the right push - frame (3), there is a closed shield (5) respectively.

2. The frame connection base of the advanced support for the ultra-large mining height transportation roadway according to claim 1, characterized in that: At the front and rear side end - faces of the left push - frame (2), there is a first coal - guiding slope (6) fixed respectively. One end of the upper - end face of the first coal - guiding slope (6) far from the left push - frame (2) slopes downward and is connected to the lower - end face of the first coal - guiding slope (6). A round steel (15) is fixedly arranged at the connection of the upper - end face and the lower - end face of the first coal - guiding slope (6); on the side end - faces of the front and rear first coal - guiding slopes (6) close to the right push - frame (3), there are two front - and - rear symmetric locking - shaft ear plates (7) fixed respectively. There is a front - and - rear through - hole locking - shaft hole on each locking - shaft ear plate (7).

3. The frame-type connecting base of the advanced support in the super-large mining height transportation roadway according to claim 2, characterized in that: In the middle of the side end - face of the left push - frame (2) close to the right push - frame (3), there is a first double - hole rod - head (8) fixed. There are two left - and - right symmetric first docking holes on the first double - hole rod - head (8). The first docking holes communicate with the front and rear end - faces of the first double - hole rod - head (8).

4. The frame - type connecting base of the advanced support in the ultra - large mining - height haulage roadway according to claim 3, characterized in that: At the front and rear side end - faces of the right push - frame (3), there is a second coal - guiding slope (9) fixed respectively. One end of the upper - end face of the second coal - guiding slope (9) far from the right push - frame (3) slopes downward and is connected to the lower - end face of the second coal - guiding slope (9). A round steel (15) is fixedly arranged at the connection of the upper - end face and the lower - end face of the second coal - guiding slope (9); on the side end - faces of the front and rear second coal - guiding slopes (9) close to the left push - frame (2), there are two front - and - rear symmetric locking - shaft ear plates (7) fixed respectively. There is a front - and - rear through - hole locking - shaft hole on each locking - shaft ear plate (7).

5. The frame - type connecting base of the advanced support in the ultra - large mining - height haulage roadway according to claim 4, characterized in that: On the side end - face of the right push - frame (3) close to the left push - frame (2), there are two front - and - rear symmetric second double - hole rod - heads (10) fixed. There are two left - and - right symmetric first docking holes on the second double - hole rod - heads (10). The second docking holes communicate with the front and rear end - faces of the second double - hole rod - heads (10).

6. The frame - type connecting base of the advanced support in the ultra - large mining - height haulage roadway according to claim 5, characterized in that: The first double - hole rod - head (8) of the left push - frame (2) is inserted between the two second double - hole rod - heads (10) of the right push - frame (3). The two first docking holes on the first double - hole rod - head (8) are aligned with the two second docking holes on the second double - hole rod - heads (10); A fixed pin - shaft is inserted between the aligned first docking holes and second docking holes, thereby connecting the left push - frame (2) and the right push - frame (3).

7. An ultra-large mining height advance support frame-type connecting base according to claim 6, characterized in that: The pin shaft assembly (4) includes a fixed frame (11) and two single-hole rod heads (12); the fixed frame (11) is of a square box structure, and the fixed frame (11) is fixedly arranged on one side end face of the two base assemblies (1) close to each other. On one side end face of the fixed frame (11) close to the other base assembly (1), there are two installation grooves (13) arranged front and back; on one side end face of the left push frame (2) and the right push frame (3) close to the same side base assembly (1), there are two single-hole rod heads (12) fixedly arranged front and back respectively, and a fixing hole penetrating up and down is arranged on each single-hole rod head (12).

8. The frame-type connecting base of the advanced support in the ultra-large mining height transportation roadway according to claim 7, characterized in that: The two single-hole rod heads (12) on the left push frame (2) and the right push frame (3) are respectively inserted into the front and back two installation grooves (13) of the fixed frame (11) on the same side, and two fixed pin shafts are respectively inserted into the fixing holes of the fixed frame (11) and the two single-hole rod heads (12), so as to connect the two single-hole rod heads (12) with the fixed frame (11), and further connect the left push frame (2) and the right push frame (3) with the base assemblies (1) on both sides respectively.

9. The frame connection base of the advanced support in the ultra-large mining height transportation roadway according to claim 6, characterized in that: A closed shield (5) is arranged between the front first coal guiding slope (6) and the second coal guiding slope (9), and a closed shield (5) is also arranged between the rear first coal guiding slope (6) and the second coal guiding slope (9); the closed shield (5) includes a triangular fixing plate, the fixing plate is located in the vertical plane in the front-back direction, a third coal guiding slope (14) is fixedly arranged on the inclined surface of the fixing plate, the third coal guiding slope (14) is flush with the first coal guiding slopes (6) and the second coal guiding slopes (9) on both sides, and a round steel (15) is fixedly arranged at the lower side edge of the third coal guiding slope (14); a mounting plate (16) is fixedly arranged at the vertical end face of the fixing plate, the mounting plate (16) is located in the vertical plane in the left-right direction, mounting holes are arranged at the left and right ends of the mounting plate (16) respectively, the left and right ends of the mounting plate (16) are respectively inserted between two locking shaft ear plates (7) on the first coal guiding slope (6) and the second coal guiding slope (9), and the mounting holes on the mounting plate (16) correspond to the locking shaft holes on the locking shaft ear plates (7). The mounting plate (16) is fixed to the locking shaft ear plates (7) by passing a locking shaft through the mounting holes and the locking shaft holes, so as to fixedly connect the closed shield (5) with the first coal guiding slopes (6) and the second coal guiding slopes (9) on both sides.

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