Lap-joint turning device for secondary transportation of heading machine

Abstract

The utility model relates to a secondary transportation lap-joint turning device of a heading machine, and belongs to the technical field of roadway heading processes. Comprising at least two secondary conveying belt conveyors, every two adjacent secondary conveying belt conveyors are connected through a lap joint turning mechanism, each lap joint turning mechanism comprises a hanging frame, each hanging frame is welded to the bottom of a headstock of the previous secondary conveying belt conveyor, each hanging frame is hinged to a rotating frame through a pin shaft A, and each rotating frame can rotate relative to the corresponding hanging frame. A supporting frame for preventing the rotating frame from falling off is arranged at the bottom of the hanging frame, a transverse plate of the rotating frame penetrates through an inner cavity of the supporting frame and is in lap joint with a bottom plate of the supporting frame, and the rotating frame is hinged to a machine tail frame of the next two-way rubber belt conveyor through a pin shaft B. The double-conveying lap-joint turning device has the advantages that the double-conveying lap-joint turning device is used for replacing a raking loader and a side dumping type loader, the problem of coal gangue flow conveying restriction of roadway large-angle turning construction is solved, the continuity of a coal gangue flow system is improved, and the roadway tunneling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a two-way overlapping turning device for a tunneling machine, belonging to the field of tunnel excavation technology. Background Technology

[0002] Tunneling plays a crucial role in the safe production and construction of coal mines. Tunneling efficiency directly affects mine production continuity and output efficiency. Improving tunneling efficiency, particularly the efficiency of tunneling with opening doors and turns, is a key challenge for mine safety. With the increasing mechanization and intelligence of tunneling, fully mechanized tunneling is gradually replacing blasting. Currently, tunneling machines are used for tunneling with opening doors and turns, primarily employing scraper loaders and side-dump loaders in conjunction with the machine. However, due to regulations prohibiting the use of wire rope-traction scraper loaders in coal roadways and semi-coal-rock roadways with coal dust explosion hazards, low coal and gangue transportation efficiency, and the inability to achieve one-time tunneling completion, the overall efficiency of tunneling with opening doors and turns is relatively low under existing construction equipment and processes. Improving the efficiency of tunneling with opening doors and turns while meeting regulatory requirements has become a major challenge that urgently needs to be addressed.

[0003] A search revealed that patent CN201902210U discloses a connection device between a roadheader and a belt conveyor, including a tail section frame. Two horizontally spaced steel rails are installed on the top surface of the tail section frame. A horizontal conveyor belt is installed on the tail section frame between the rails. A traveling roller frame that runs on the rails is installed under the rear bottom surface of the secondary conveyor belt of the roadheader. The rear free end of the tail section frame is connected to a conventional belt conveyor. A rail limiting block is installed on the top surface of the free end of the tail section frame.

[0004] Although the aforementioned patent enables rapid tunneling by using a combination of a roadheader, a secondary conveyor belt, and a tail-end integrated frame to extend the belt operation, the current technology is not comprehensive and has the following drawbacks: In tunneling with opening doors and turning points, it cannot solve the problem of coal and gangue transportation constraints during large-angle tunnel turns, and still requires scraper loaders and side-dump loaders to cooperate with the roadheader, resulting in low tunneling efficiency during tunnel opening doors and turning points. Utility Model Content

[0005] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to use a two-transport overlapping turning device to replace the scraper loader and the side-dump loader, solve the problem of coal and gangue transportation constraints in the construction of roadways with large-angle turns, improve the continuity of the coal and gangue system, and improve the roadway excavation efficiency, so as to provide a two-transport overlapping turning device for a tunneling machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The present invention relates to a tunneling machine secondary conveyor overlapping and turning device, characterized in that it includes at least two secondary conveyor belts, adjacent secondary conveyor belts are connected by an overlapping and turning mechanism, the overlapping and turning mechanism includes a hanging frame, the hanging frame is welded to the bottom of the head frame of the upper secondary conveyor belt, the hanging frame is hinged to a rotating frame by a pin A, the rotating frame can rotate relative to the hanging frame, the bottom of the hanging frame is provided with a support frame to prevent the rotating frame from falling, the horizontal plate of the rotating frame passes through the inner cavity of the support frame and overlaps on the bottom plate of the support frame, the rotating frame is hinged to the tail frame of the lower secondary conveyor belt by a pin B.

[0008] Preferably, the support frame includes two sets of side plates symmetrically arranged at the bottom of the hanging frame, and a bottom plate arranged parallel to the bottom of the two sets of side plates. A through hole B is opened in the middle of the bottom plate. The two sets of side plates are respectively fixed to the two ends of the bottom plate by corresponding columns. The bottom plate, the two sets of columns and the two sets of side plates form the inner cavity of the support frame. The bottom plate supports the horizontal plate, so that the support frame can suspend the rotating frame and prevent the rotating frame from falling.

[0009] Preferably, the secondary conveyor belt consists of two parts, namely a first secondary conveyor and a second secondary conveyor. The first secondary conveyor includes a head frame A and a tail frame A, and the second secondary conveyor includes a head frame B and a tail frame B. The hanging frame is welded to the bottom of the head frame A, and the rotating frame is hinged to the tail frame B through a pin B.

[0010] Preferably, the hanging frame includes two sets of opposing upright plates A, the top ends of the two sets of upright plates A are welded to the bottom of the head frame A, the bottom ends of the two sets of upright plates A are connected by a connecting plate, a through hole A is opened in the middle of the connecting plate, and two sets of side plates are symmetrically welded to both sides of the connecting plate.

[0011] Preferably, the rotating frame includes two sets of opposing vertical plates B, the top ends of the two sets of vertical plates B are connected by a horizontal plate, a through hole C is opened in the middle of the horizontal plate, and a through hole D is opened at the bottom end of each set of vertical plates B. The bottom ends of the two sets of vertical plates B are connected by a pin B, the pin B passes through the hinge seat of the tail frame B and is hinged to the tail frame B, and the two ends of the pin B are connected to the corresponding vertical plate B through the corresponding through hole D.

[0012] Preferably, the through holes A, B, and C are arranged on the same axis and have the same diameter. The pin A passes through the through holes A, C, and B in sequence. The through holes A, C, and B are all fitted with the pin A with a small clearance, so that the rotating frame can rotate around the pin A and the tail frame B can rotate relative to the head frame A, thereby achieving the purpose of overlapping and turning between the first and second secondary transport sections.

[0013] Preferably, the secondary conveyor belt system comprises three parts: a first secondary conveyor, a second secondary conveyor, and a third secondary conveyor. The structure of the third secondary conveyor is the same as that of the first and second secondary conveyors. The first and second secondary conveyors, as well as the second and third secondary conveyors, are connected by corresponding overlapping turning mechanisms, enabling the three secondary conveyor belt systems to overlap and turn. This allows them to work in conjunction with the tunneling machine to perform tunneling operations involving opening and turning in the tunnel, providing advantages in safety and efficiency.

[0014] A coal and gangue transport system for tunneling with opening doors and turning points includes a tunneling machine with a two-way overlapping turning device, as described above. It also includes a tunneling machine, a belt conveyor, and a monorail lifting beam. The hinged seat at the tail end of the tunneling machine is hinged to the hinged seat of the tail frame A via a pin C. The head frame A and head frame B are respectively suspended on the monorail lifting beam via two sets of pulleys connected by chains. The head frame B overlaps with the belt conveyor, forming a coal and gangue transport system with two overlapping two-way belt conveyors, thus improving the working efficiency of tunneling with opening doors and turning points.

[0015] A coal and gangue transport system for tunneling with opening doors and turning points includes a tunneling machine with a two-way overlapping turning device, as described above. It also includes a tunneling machine, a belt conveyor, and a monorail lifting beam. The hinged seat at the tail end of the tunneling machine is hinged to the hinged seat of the tail frame A via a pin C. The head frame A, head frame B, and the head frame C of the third two-way conveyor are respectively suspended on the monorail lifting beam via two sets of pulleys connected by chains. The head frame C overlaps with the belt conveyor, forming a coal and gangue transport system with three overlapping belt conveyors, thus improving the working efficiency of tunneling with opening doors and turning points.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention discloses a tunneling machine secondary conveyor overlapping turning device, which sets up multiple secondary conveyor belts and overlapping turning mechanisms. The first secondary conveyor belt is connected to the tunneling machine, and the last secondary conveyor belt is overlapped with the belt conveyor, forming a coal and gangue transportation system, which solves the problem of coal and gangue transportation constraints in the construction of large-angle turns in roadways.

[0018] The present invention provides a tunneling machine two-way overlapping turning device, which replaces the scraper loader and the side-discharge loader, improves the continuity of the coal and gangue flow system, reduces the amount of equipment installation and removal work, and improves the one-time tunneling standard and tunneling efficiency during the tunnel opening and turning period. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is an exploded view of the present invention;

[0022] Figure 3 A schematic diagram of a coal and gangue transport system that allows for tunneling with doors and turns;

[0023] Figure 4 A top-view schematic diagram of a coal and gangue transport system that allows tunneling through turns and opening doors.

[0024] In the diagram: 1. Overlapping turning mechanism; 2. First secondary conveyor; 3. Second secondary conveyor; 4. Head frame A; 5. Tail frame A; 6. Head frame B; 7. Tail frame B; 8. Hanging frame; 9. Pin A; 10. Rotating frame; 11. Pin B; 12. Vertical plate A; 13. Connecting plate; 14. Side plate; 15. Bottom plate; 16. Through hole A; 17. Through hole B; 18. Column; 19. Vertical plate B; 20. Horizontal plate; 21. Through hole C; 22. Through hole D; 23. Tunneling machine; 24. Belt conveyor; 25. Monorail lifting beam; 26. Support frame. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0027] Example 1, as Figure 1-2 As shown, a tunneling machine secondary conveyor overlapping and turning device includes at least two secondary conveyor belts. The two adjacent secondary conveyor belts are connected by an overlapping and turning mechanism 1. The overlapping and turning mechanism 1 includes a hanging frame 8, which is welded to the bottom of the head frame of the upper secondary conveyor belt. The hanging frame 8 is hinged to a rotating frame 10 via a pin A9. The rotating frame 10 can rotate relative to the hanging frame 8. A support frame 26 is provided at the bottom of the hanging frame 8 to prevent the rotating frame 10 from falling. The horizontal plate 20 of the rotating frame 10 passes through the inner cavity of the support frame 26 and overlaps on the bottom plate 15 of the support frame 26, so that the rotating frame 10 is suspended on the support frame 26. The rotating frame 10 is hinged to the tail frame of the next secondary conveyor belt via a pin B11, thereby achieving the purpose of overlapping and turning between the two adjacent secondary conveyor belts.

[0028] Furthermore, the support frame 26 includes two sets of side plates 14 symmetrically arranged at the bottom end of the hanging frame 8, and a bottom plate 15 arranged parallel below the two sets of side plates 14. A through hole B17 is opened in the middle of the bottom plate 15. The two sets of side plates 14 are respectively fixed to the two ends of the bottom plate 15 by corresponding columns 18. The bottom plate 15, the two sets of columns 18 and the two sets of side plates 14 form the inner cavity of the support frame 26. The bottom plate 15 supports the horizontal plate 20, so that the support frame 26 plays a role in suspending the rotating frame 10 and preventing the rotating frame 10 from falling.

[0029] Example 2, as Figure 1-4 As shown, a tunneling machine secondary conveyor overlapping and turning device includes at least two secondary conveyor belts. The two adjacent secondary conveyor belts are connected by an overlapping and turning mechanism 1. The overlapping and turning mechanism 1 includes a hanging frame 8, which is welded to the bottom of the head frame of the upper secondary conveyor belt. The hanging frame 8 is hinged to a rotating frame 10 via a pin A9. The rotating frame 10 can rotate relative to the hanging frame 8. A support frame 26 is provided at the bottom of the hanging frame 8 to prevent the rotating frame 10 from falling. The horizontal plate 20 of the rotating frame 10 passes through the inner cavity of the support frame 26 and overlaps on the bottom plate 15 of the support frame 26, so that the rotating frame 10 is suspended on the support frame 26. The rotating frame 10 is hinged to the tail frame of the next secondary conveyor belt via a pin B11, thereby achieving the purpose of overlapping and turning between the two adjacent secondary conveyor belts.

[0030] Furthermore, the support frame 26 includes two sets of side plates 14 symmetrically arranged at the bottom end of the hanging frame 8, and a bottom plate 15 arranged parallel below the two sets of side plates 14. A through hole B17 is opened in the middle of the bottom plate 15. The two sets of side plates 14 are respectively fixed to the two ends of the bottom plate 15 by corresponding columns 18. The bottom plate 15, the two sets of columns 18 and the two sets of side plates 14 form the inner cavity of the support frame 26. The bottom plate 15 supports the horizontal plate 20, so that the support frame 26 plays a role in suspending the rotating frame 10 and preventing the rotating frame 10 from falling.

[0031] Furthermore, the secondary conveyor belt consists of two parts, namely the first secondary conveyor 2 and the second secondary conveyor 3. The first secondary conveyor 2 includes a head frame A4 and a tail frame A5, and the second secondary conveyor 3 includes a head frame B6 and a tail frame B7. The hanging frame 8 is welded to the bottom of the head frame A4, and the rotating frame 10 is hinged to the tail frame B7 through a pin B11.

[0032] Furthermore, the hanging frame 8 includes two sets of opposing upright plates A12. The top ends of the two sets of upright plates A12 are welded to the bottom of the head frame A4. The bottom ends of the two sets of upright plates A12 are connected by a connecting plate 13. A through hole A16 is opened in the middle of the connecting plate 13. Two sets of side plates 14 are symmetrically welded to both sides of the connecting plate 13, making the structure more stable.

[0033] Furthermore, the rotating frame 10 includes two sets of opposing upright plates B19. The top ends of the two sets of upright plates B19 are connected by a horizontal plate 20. A through hole C21 is opened in the middle of the horizontal plate 20. A through hole D22 is opened at the bottom end of each set of upright plates B19. The bottom ends of the two sets of upright plates B19 are connected by a pin B11. The pin B11 passes through the hinge seat of the tail frame B7 and is hinged to the tail frame B7. The two ends of the pin B11 are connected to the corresponding upright plate B19 through the corresponding through hole D22.

[0034] Furthermore, the through holes A16, B17, and C21 are coaxially arranged and have the same diameter. The pin A9 passes through the through holes A16, C21, and B17 in sequence. The through holes A16, C21, and B17 are all fitted with the pin A9 with a small clearance, so that the rotating frame 10 can rotate around the pin A9 and the tail frame B7 can rotate relative to the head frame A4, thereby achieving the purpose of overlapping and turning between the first secondary transport 2 and the second secondary transport 3.

[0035] A coal and gangue transport system for tunneling with opening doors and turning points includes a tunneling machine 23, a belt conveyor 24, and a monorail lifting beam 25. The hinged seat at the tail end of the tunneling machine 23 is hinged to the hinged seat of the tail frame A5 via a pin C. The head frame A4 and head frame B6 are respectively suspended on the monorail lifting beam 25 via two sets of pulleys and connecting chains. The head frame B6 overlaps with the belt conveyor 24, forming a coal and gangue transport system with two overlapping belt conveyors, which improves the working efficiency of tunneling with opening doors and turning points.

[0036] Example 3 differs from Example 2 in that, in the aforementioned tunneling machine secondary conveyor overlapping and turning device, the secondary conveyor belts consist of three parts: a first secondary conveyor 2, a second secondary conveyor 3, and a third secondary conveyor. The structure of the third secondary conveyor is the same as that of the first and second secondary conveyor belts 2 and 3. The first secondary conveyor 2 and the second secondary conveyor 3, as well as the second secondary conveyor 3 and the third secondary conveyor, are connected by corresponding overlapping and turning mechanisms 1, enabling the three secondary conveyor belts to overlap and turn. This allows the tunneling machine 23 to perform tunneling work with opening and turning in the tunnel, providing advantages of safety and high efficiency.

[0037] A coal and gangue transport system for tunneling with opening doors and turning points includes a tunneling machine 23, a belt conveyor 24, and a monorail beam 25. The hinged seat at the tail end of the tunneling machine 23 is hinged to the hinged seat of the tail frame A5 via a pin C. The head frame A4, head frame B6, and the head frame C of the third secondary conveyor are respectively suspended on the monorail beam 25 via two sets of pulleys and connecting chains. The head frame C overlaps with the belt conveyor 24 to form a coal and gangue transport system with three secondary conveyor belts overlapping, which improves the working efficiency of tunneling with opening doors and turning points.

[0038] The working principle of this utility model:

[0039] Before carrying out tunnel opening and turning excavation work, the secondary haulage overlapping turning device can be reasonably selected according to the size of the tunnel opening and turning angle, such as the selection of the installation length of a single secondary haulage device, the selection of the monorail lifting beam during turning (installation design parameters of straight beam and curved beam), and the number of secondary haulage devices installed.

[0040] Then, the coal and gangue transport system for the tunnel opening and turning excavation is assembled. The tail end of the tunneling machine is hinged to the tail frame of the first secondary conveyor belt. Adjacent secondary conveyor belts are connected to each other through corresponding overlapping turning mechanisms. The head frame of each secondary conveyor belt is suspended on the monorail beam by two sets of pulleys and connecting chains. The last secondary conveyor belt is connected to the belt conveyor to form the coal and gangue transport system for the tunnel opening and turning excavation work.

[0041] After excavating 30m through the tunnel with a door opening and turning, the tunneling machine's secondary conveyor overlapping turning device is replaced with a secondary conveyor belt (the first secondary conveyor belt is retained, and the redundant secondary conveyor belts and overlapping turning mechanisms are removed), transitioning to a mode where "the tail end of the tunneling machine is hinged to the tail frame of the first secondary conveyor belt, and the head frame of the first secondary conveyor belt is overlapped with the belt conveyor," to cooperate with the tunneling machine for rapid excavation.

[0042] The present invention discloses a tunneling machine secondary conveyor overlapping turning device, which sets up multiple secondary conveyor belts and overlapping turning mechanisms. The first secondary conveyor belt is connected to the tunneling machine, and the last secondary conveyor belt is overlapped with the belt conveyor, forming a coal and gangue transportation system, which solves the problem of coal and gangue transportation constraints in the construction of large-angle turns in roadways.

[0043] The present invention provides a tunneling machine two-way overlapping turning device, which replaces the scraper loader and the side-discharge loader, improves the continuity of the coal and gangue flow system, reduces the amount of equipment installation and removal work, and improves the one-time tunneling standard and tunneling efficiency during the tunnel opening and turning period.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0045] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A two-way overlapping turning device for a roadheader, characterized in that: The invention comprises at least two two-way belt conveyors, wherein the two adjacent two-way belt conveyors are connected via an overlapping turning mechanism (1), wherein the overlapping turning mechanism (1) comprises a hanging frame (8), wherein the hanging frame (8) is welded to the bottom of a head frame of an upper two-way belt conveyor, wherein the hanging frame (8) is hinged to a rotating frame (10) via a pin A (9), wherein the rotating frame (10) can rotate relative to the hanging frame (8), wherein a supporting frame (26) is provided at the bottom of the hanging frame (8) to prevent the rotating frame (10) from falling, wherein a transverse plate (20) of the rotating frame (10) passes through an inner cavity of the supporting frame (26) and is overlapped on a bottom plate (15) of the supporting frame (26), and wherein the rotating frame (10) is hinged to a tail frame of a lower two-way belt conveyor via a pin B (11).

2. A tunnel boring machine double-operation overlapping turning device according to claim 1, characterized in that: The support frame (26) comprises two groups of side panels (14) symmetrically arranged at the bottom end of the hanging frame (8); a bottom plate (15) is arranged parallel to the bottom of the two groups of side panels (14); a through hole B (17) is opened in the middle of the bottom plate (15); the two groups of side panels (14) are respectively fixed to the two ends of the bottom plate (15) through corresponding columns (18); the bottom plate (15), the two groups of columns (18) and the two groups of side panels (14) enclose an inner cavity of the support frame (26).

3. A tunnel boring machine double-operation overlapping turning device according to claim 2, characterized in that: The two-carriage belt conveyor comprises two parts, namely a first two-carriage (2) and a second two-carriage (3). The first two-carriage (2) comprises a head frame A (4) and a tail frame A (5), and the second two-carriage (3) comprises a head frame B (6) and a tail frame B (7). The hanging frame (8) is welded to the bottom of the head frame A (4), and the rotating frame (10) is hinged to the tail frame B (7) through a pin shaft B (11).

4. The double-operation overlapping turning device for a roadheader according to claim 3, characterized in that: The hanging frame (8) comprises two groups of vertical plates A (12) arranged opposite to each other, the top ends of the two groups of vertical plates A (12) are welded to the bottom of the machine head frame A (4), the bottom ends of the two groups of vertical plates A (12) are connected by a connecting plate (13), a through hole A (16) is opened in the middle of the connecting plate (13), and the two groups of side plates (14) are symmetrically welded to the two sides of the connecting plate (13).

5. The double-operation overlapping turning device for a roadheader according to claim 4, characterized in that: The rotating frame (10) comprises two groups of vertical plates B (19) arranged opposite to each other, the top ends of the two groups of vertical plates B (19) are connected by a horizontal plate (20), a through hole C (21) is opened in the middle of the horizontal plate (20), and the bottom ends of the two groups of vertical plates B (19) are opened with a through hole D (22). The bottom ends of the two groups of vertical plates B (19) are connected by a pin shaft B (11), the pin shaft B (11) passes through the hinge seat of the tail frame B (7) and is hinged to the tail frame B (7), and the two ends of the pin shaft B (11) are connected to the corresponding vertical plates B (19) through the corresponding through holes D (22).

6. The double-operation overlapping turning device for a roadheader according to claim 5, characterized in that: The through hole A (16), the through hole B (17) and the through hole C (21) are coaxially arranged and have the same hole diameter. The pin shaft A (9) passes through the through hole A (16), the through hole C (21) and the through hole B (17) in sequence. The through hole A (16), the through hole C (21) and the through hole B (17) are all fitted with a small clearance with the pin shaft A (9).

7. The double-operation overlapping turning device for a roadheader according to claim 6, characterized in that: The two-carriage belt conveyor comprises three parts, namely a first two-carriage (2), a second two-carriage (3) and a third two-carriage. The structure of the third two-carriage is the same as that of the first two-carriage (2) and the second two-carriage (3). The first two-carriage (2) and the second two-carriage (3) are connected to each other, and the second two-carriage (3) and the third two-carriage are connected to each other via corresponding overlapping turning mechanisms (1).

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