Extension frame mounting protection device and method for continuous belt conveyor used in roadway excavation

Abstract

The application discloses a roadway tunneling continuous belt conveyor extension frame mounting protection device and method, which comprises an upper protection hanger, a lower protection hanger and a support slide; the upper protection hanger is connected with a last section trolley and cooperates with an upper belt, the upper belt is lifted to make the gap between the upper belt and a lower belt larger to form a mounting space; the lower protection hanger is connected with the upper protection hanger and cooperates with the lower belt to guide the lower belt to isolate the lower belt from an object below; and the support slide is connected with the last section trolley and supports longitudinal beams on the extension frame. The application can effectively solve the demand of installing the roadway tunneling continuous belt conveyor extension frame under the non-stop working condition; meanwhile, the mounting method is reasonable in design and convenient to operate, and can provide help for improving the mine tunneling construction efficiency and safety production.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical manufacturing, and specifically relates to an installation protection device and an installation method for an extended frame of a continuous belt conveyor for roadway tunneling. Background Art

[0002] Adopting advanced technologies and equipment to achieve less manned and unmanned production processes is the only way for the intelligent development of coal mines. Rapidly and efficiently, and safely and economically excavating coal mine roadways has become the most urgent need for the intelligent development of coal production enterprises. Due to the characteristics of long transportation distance, large transportation volume, and high efficiency of the slag discharging system of the continuous belt conveyor for the rear support of TBM / shield, it has gradually been widely used in the tunneling construction of the main shaft roadway of mines.

[0003] During the tunneling construction of the main shaft roadway of a coal mine using TBM / shield, it is necessary to install an extended frame of a continuous belt conveyor behind the last trolley of the TBM / shield. The extended frame includes longitudinal beams and connecting parts, upper idler frames and upper idlers, lower idlers, legs, and connecting fasteners between each component. In order to improve the tunneling efficiency, during the actual construction process, the extended frame is installed under the condition of not stopping the belt conveyor. If the belt conveyor does not stop, since the upper and lower belts are moving and the belt speed is relatively high, the operator needs to cross the space below the lower belt many times during the installation of the frame, carry the frame, etc., which poses a great safety hazard to the operator during the installation of the frame. Since the safe, rapid, and non-stop installation of the extended frame of the continuous belt conveyor for the rear support of TBM / shield is an extremely important link, a practical installation protection device for the extended frame is urgently needed by on-site construction personnel.

[0004] Thus, it can be seen that how to improve the installation efficiency and operation safety of the extended frame of the continuous belt conveyor is a problem to be solved in this field. Summary of the Invention

[0005] Aiming at the technical problem of low efficiency in the installation of the existing extended frame of the continuous belt conveyor, the purpose of the present invention is to provide an installation protection device for the extended frame of a continuous belt conveyor for roadway tunneling, which can meet the requirement of installing the extended frame of the continuous belt conveyor under the condition of not stopping the machine; on this basis, an installation method is also given, which greatly improves the installation efficiency of the extended frame of the continuous belt conveyor and well overcomes the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a protective device for the installation of an extension frame of a continuous belt conveyor used in tunnel excavation, comprising an upper protective hanger, a lower protective hanger, and a support slide; the upper protective hanger is connected to the last section of the trolley and cooperates with the upper conveyor belt, lifting the upper conveyor belt to increase the gap between the upper and lower conveyor belts and form an installation space; the lower protective hanger is connected to the upper protective hanger and cooperates with the lower conveyor belt, guiding the lower conveyor belt to isolate it from objects below; the support slide is connected to the last section of the trolley and supports the longitudinal beams on the extension frame.

[0007] Furthermore, the upper protective hanger is composed of several hanging upper roller groups and a suspension connecting frame; the several hanging upper roller groups are equidistantly arranged below the suspension connecting frame and connected to the suspension connecting frame; the suspension connecting frame is connected to the last section of the trolley.

[0008] Furthermore, the suspension connection frame includes a mounting frame and diagonal braces; the upper protective hanger can be welded to the last section of the trolley through the cooperation of the mounting frame and diagonal braces.

[0009] Furthermore, the mounting frame comprises two channel steel beams and several crossbeams;

[0010] The two channel steel beams are symmetrically arranged, and the several crossbeams are equidistantly arranged between the two channel steel beams and fixedly connected to the channel steel beams, thereby forming an installation frame for suspending the upper roller assembly.

[0011] The diagonal brace consists of two connecting beams. One end of each connecting beam is symmetrically positioned on two channel steel beams, and the other end is connected to the last section of the trolley, thus reinforcing the connection between the suspension connecting frame and the last section of the trolley.

[0012] Furthermore, a protective steel mesh is provided under the plurality of suspended roller groups, extending from the head end of the plurality of suspended roller groups to the end end.

[0013] Furthermore, the lower protective hanger consists of an guide roller hanger and a protective chamber, with the guide roller hanger and the protective chamber being connected in cooperation.

[0014] Furthermore, the guide roller hanger is made of four rectangular tubes welded into a frame. The frame has a mounting support for the guide roller at the bottom and four connecting rods at the top, which can be welded to the upper protective hanger.

[0015] Furthermore, the protective cabin is welded together from two side angle steels, an upper platform steel plate, and a lower isolation steel plate; the angle steels are set on both sides of the upper platform steel plate and serve as connecting parts between the protective cabin and the guide roller hanger; the platform steel plate can hold the pre-installed roller hanger; the lower isolation steel plate is set at the bottom of the upper platform steel plate and can separate the protective cabin from the installation area at the bottom.

[0016] Furthermore, the support slide is welded from structural steel, with a section of channel steel with the slot facing upward on each of its left and right sides, which can be used to support the longitudinal beam when installing the extension frame.

[0017] To achieve the above objectives, the present invention provides an installation method for a protective device for the extension frame of a continuous belt conveyor used in tunnel excavation, which is used in conjunction with the aforementioned protective device, and includes:

[0018] First, as the TBM / shield tunnel advances forward, small supports are pre-installed at intervals on the tunnel wall side;

[0019] When the last section of the trolley moves the entire set of installation protective devices forward to below the lower protective hanger, operating space can be freed up.

[0020] Within the operating space, first install the two longitudinal beams, longitudinal beam connectors, and lower support rollers in the extension frame; after installing the longitudinal beams and lower support rollers, place the upper support roller frame on the extension frame onto the storage platform of the lower protective hanger and move it to the first end of the storage platform.

[0021] When the TBM / shield tunnel continues to advance a certain distance, the first set of upper roller support on the longitudinal beam moves to the first end of the lower protective hanger, at which time the first set of upper rollers on the extension frame is installed.

[0022] The TBM / shield tunnel continues to advance. When the small support on the side wall of the tunnel is exposed at the last section of the trolley, the installation of the ground support legs on the extension frame begins.

[0023] When the second set of upper idler roller support on the longitudinal beam moves to the right end of the lower protective hanger, the installation of the second set of upper idler rollers begins. At this point, the installation of a standard extended frame is completed. This process is repeated until the tunnel is completed.

[0024] The present invention provides a protective device and installation method for the extension frame of a continuous belt conveyor for tunnel excavation. By installing an auxiliary protective device and cooperating with the last section of the trolley, it can solve the need for installation of the extension frame of the continuous belt conveyor under non-stop operation, and greatly improve the installation efficiency of the extension frame of the continuous belt conveyor. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a schematic diagram of the installation structure of this protective device;

[0027] Figure 2 This is a side view of the installation structure of this protective device;

[0028] Figure 3 This is a schematic diagram of the overall structure of this protective device;

[0029] Figure 4 This is a schematic diagram of the upper protective hanger in this protective device;

[0030] Figure 5 This is a side view of the upper protective hanger in this protective device;

[0031] Figure 6 This is a side view of the lower protective hanger in this protective device;

[0032] Figure 7 for Figure 6 The structure AA view in the middle;

[0033] Figure 8 This is a schematic diagram of the lower protective hanger in this protective device;

[0034] Figure 9 This is a schematic diagram of the supporting carriage in this protective device;

[0035] Figure 10 A flowchart illustrating the installation method for extending the frame to accommodate this protective device;

[0036] Figure 11 for Figure 10 A schematic diagram of the first step in the installation method;

[0037] Figure 12 for Figure 10 A schematic diagram of the second step in the installation method;

[0038] Figure 13 for Figure 10 A schematic diagram of the third step in the installation method;

[0039] Figure 14 for Figure 10 The diagram shows the fourth step in the installation method.

[0040] The following are the component labels in the attached diagram:

[0041] 100. Last section trolley 200. Protective device 210. Upper protective hanger 211. Hanging upper idler roller group 212. Suspension connecting frame 213. Protective steel mesh 220. Lower protective hanger 221. Connecting rod 222. Flat idler roller 223. Upper placement platform steel plate 224. Angle steel 225. Lower isolation steel plate 230. Support slide 231. Groove 232. Channel steel 300. Extension frame 310. Small bracket 320. Support leg 330. First upper idler roller bracket 340. Second upper idler roller bracket 350. Longitudinal beam 360. Lower idler roller 370. First upper idler roller group 380. Second upper idler roller group 400. Upper conveyor belt 500. Lower conveyor belt. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0043] To address the technical problems of low efficiency and poor safety in the installation of extension frames for continuous belt conveyors used in roadway excavation, this solution provides a protective device for the installation of extension frames for such conveyors. (See attached document.) Figures 1-2 By installing auxiliary protection device 200 and cooperating with the last section trolley 100, it can solve the need to install extension frame 300 under the condition of continuous belt conveyor without stopping the machine, which greatly improves the installation efficiency and operation safety of extension frame 300 of continuous belt conveyor, thereby improving tunneling construction efficiency.

[0044] First, see Figures 12-14 The extension frame 300 includes a longitudinal beam 350 and a longitudinal beam connector, a lower idler roller 360, a first upper idler roller bracket 330, a first upper idler roller group 370, a ground support leg 320, a second upper idler roller bracket 340, and a second upper idler roller group 380.

[0045] The longitudinal beam 350, the first upper roller bracket 330, and the second upper roller bracket 340 are welded together as a single structure, meaning that one longitudinal beam 350 contains two upper roller brackets.

[0046] The first upper roller group 370 and the second upper roller group 380 are respectively mounted on the first upper roller bracket 330 and the second upper roller bracket 340, and the entire extension frame is stably placed on the ground by the ground support leg 320.

[0047] For details, see Figure 3-4 The protective device 200 for the extension frame of the continuous belt conveyor for tunnel excavation provided in this solution includes an upper protective hanger 210, a lower protective hanger 220 and a support slide 230.

[0048] The function of the upper protective bracket 210 is to lift the upper tape 400 in the installation area, so as to maintain a certain installation space between the upper tape 400 and the lower tape 500, and to play a role in safety protection.

[0049] The upper protective hanger 210 is welded to the end of the last section of the trolley 100.

[0050] join Figure 5 The upper protective hanger 210 is composed of several hanging upper roller groups 211, protective steel mesh 213 and suspension connecting frame 212.

[0051] The suspension connecting frame 212 includes a mounting frame and diagonal braces; the upper protective hanger 210 can be welded to the end section trolley 100 by the cooperation of the mounting frame and diagonal braces.

[0052] Furthermore, the mounting frame consists of two channel steel beams and several crossbeams.

[0053] Two channel steel beams are spaced apart; several crossbeams are equidistantly placed between the two channel steel beams and fixedly connected to the channel steel beams, thus forming an installation frame for suspending the upper roller assembly.

[0054] The diagonal brace consists of two connecting beams; one end of each connecting beam is symmetrically positioned on two channel steel beams, and the other end is connected to the last section trolley 100, which can reinforce the connection between the suspension connecting frame 212 and the last section trolley 100.

[0055] Several hanging upper roller groups 211 are used to support the upper conveyor belt 400, lift the upper conveyor belt 400, and maintain a certain installation space between the upper conveyor belt 400 and the lower conveyor belt 500; the several hanging upper roller groups 211 are equidistantly arranged and connected to the suspension connecting frame 212 by bolt assembly.

[0056] To ensure the safety of the suspended roller assembly 211 and the conveyor belt during operation, a protective steel mesh 213 is installed under several suspended roller assemblies 211, extending from the head end to the end end of the several suspended roller assemblies 211.

[0057] After the protective steel mesh 213 is made into a trough shape similar to that of the upper idler assembly, it is connected to the suspended upper idler assembly 211 by bolt assembly, thereby isolating the conveyor belt and the moving parts of the idler from the equipment and personnel below, thus playing a role in safety protection.

[0058] The function of the lower protective hanger 220 is to isolate the lower conveyor belt 500 in the installation area from the operators, so as to prevent the operators from coming into contact with the conveyor belt when working below, thereby ensuring the safety of the personnel.

[0059] See Figures 6-8 The lower protective hanger 220 mainly consists of two parts: the guide roller hanger and the protective chamber.

[0060] See Figure 8 The guide roller hanger is made of four rectangular tubes welded into a frame. The bottom of the frame is equipped with a mounting support for the guide flat roller 222. The top of the frame is equipped with four connecting rods 221 for welding the frame to the upper protective hanger 210.

[0061] A set of flat rollers 222 are installed below the front end of the protective chamber to guide the lower conveyor belt 500 smoothly into the protective chamber.

[0062] See Figure 8 The protective cabin is welded from steel profiles and steel plates. Its left side in the figure is welded to the guide roller hanger as a whole. Two connecting rods 221 are provided at the top. Together with the four connecting rods 221 above the guide roller hanger, they can be used to weld with the upper protective hanger 210, so that the lower protective hanger 220 is suspended below the upper protective hanger 210.

[0063] See Figures 7-8 The protective cabin is welded together from two angle steels 224 on both sides, an upper platform steel plate 223, and a lower isolation steel plate 225. The angle steels 224 are set on both sides of the upper platform steel plate 223 and serve as the connecting parts between the protective cabin and the guide roller hanger. The platform steel plate 223 can hold the pre-installed roller hanger. The lower isolation steel plate 225 is set at the bottom of the upper platform steel plate 223 and is used to separate the protective cabin from the installation area at the bottom.

[0064] The lower conveyor belt 500 can enter from the left end of the protective cabin shown in the diagram and exit from the right end. At this point, the lower conveyor belt 500 is surrounded by the protective cabin within the installation area, ensuring that operators do not come into contact with the lower conveyor belt 500 and guaranteeing operational safety.

[0065] The support carriage 230 is arranged below the lower protective hanger 220, and its lower end face is welded and fixed to the horizontal platform of the last section trolley 100.

[0066] See Figure 9 The support slide 230 is welded from steel profiles, and each of its left and right sides is provided with a short channel steel 232 with an upward groove 231, which can be used to support the longitudinal beams on both sides when the extension frame 300 is installed.

[0067] The above-described scheme provides a protective device 200 for the extension frame of the continuous belt conveyor. This scheme also provides an installation method for the protective device 200 when it is used in conjunction with the extension frame 300 of the continuous belt conveyor. See [link to relevant documentation]. Figure 10 The specifics are as follows:

[0068] Because the distance between the TBM / shield tunneling machine head and the last trolley section 100 is very long, the small supports 310 on the tunnel wall side can be installed in advance according to the designed spacing (equal to the length of the longitudinal beam). The small supports 310 are fixed to the tunnel wall with expansion bolts. See also Figure 11 During the forward excavation of the TBM / shield tunnel, when the last section of the trolley 100 moves the entire set of protective devices 200 forward a certain distance, that is, when there is enough operating space under the lower protective hanger 220, the installation of the extension frame 300 begins.

[0069] See Figure 12 At this point, the operator first installs the left and right longitudinal beams 350, the longitudinal beam connectors, and the lower support roller 360 into place. After installing the longitudinal beams 350 and the lower support roller 360, the upper support roller frame is placed on the storage platform 223 of the lower protective hanger 220 and moved to the right end of the storage platform 223.

[0070] See Figure 13 When the TBM / shield tunnel continues to advance a certain distance, the first set of upper roller supports 330 on the longitudinal beam 350 moves to the right end of the lower protective hanger 220, at which point the first set of upper rollers is installed.

[0071] See Figure 14 The TBM / shield tunnel continues to advance. When the small support 310 on the tunnel wall is exposed at the end section of the trolley 100, the installation of the ground support leg 320 begins.

[0072] When the second set of upper idler roller brackets 340 on the longitudinal beam moves to the right end of the lower protective hanger 220, the installation of the second set of upper idler rollers begins. At this point, the installation of a standard extended frame is completed. This cycle continues until the tunnel is completed.

[0073] The protective device and installation method for the extension frame of the continuous belt conveyor used for roadway excavation, which constitutes the above scheme, can effectively solve the need for installation of the extension frame of the continuous belt conveyor used for roadway excavation under non-stop operation conditions; at the same time, the installation method is reasonably designed and easy to operate, which can help improve the efficiency of mine excavation construction and safe production.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention 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 the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for installing the extended frame of a continuous belt conveyor used for tunnel excavation, characterized in that, It includes an upper protective hanger, a lower protective hanger, and a support carriage; the upper protective hanger is connected to the last section of the trolley and cooperates with the upper conveyor belt, lifting the upper conveyor belt to increase the gap between the upper and lower conveyor belts and create an installation space; the lower protective hanger is connected to the upper protective hanger and cooperates with the lower conveyor belt, guiding the lower conveyor belt to isolate it from objects below; the support carriage is connected to the last section of the trolley and supports the longitudinal beams on the extension frame; First, as the TBM / shield tunnel advances forward, small supports are pre-installed at intervals on the tunnel wall side; When the last section of the trolley moves the entire set of installation protective devices forward to below the lower protective hanger, operating space can be freed up. Within the operating space, first install the two longitudinal beams, longitudinal beam connectors, and lower support rollers in the extension frame; after installing the longitudinal beams and lower support rollers, place the upper support roller frame on the extension frame onto the storage platform of the lower protective hanger and move it to the first end of the storage platform. When the TBM / shield tunnel continues to advance a certain distance, the first set of upper roller support on the longitudinal beam moves to the first end of the lower protective hanger, at which time the first set of upper rollers on the extension frame is installed. The TBM / shield tunnel continues to advance. When the small support on the side wall of the tunnel is exposed at the last section of the trolley, the installation of the ground support legs on the extension frame begins. When the second set of upper idler roller support on the longitudinal beam moves to the first end of the lower protective hanger, the installation of the second set of upper idler rollers begins. At this point, the installation of a standard extended frame is completed. This process is repeated until the tunnel is completed.

2. The protective device for installing the extended frame of a continuous belt conveyor for tunnel excavation according to claim 1, characterized in that, The upper protective frame consists of several hanging upper roller groups and a suspension connecting frame; the several hanging upper roller groups are equidistantly arranged below the suspension connecting frame and connected to the suspension connecting frame; the suspension connecting frame is connected to the last section of the trolley.

3. The protective device for installing the extended frame of a continuous belt conveyor for roadway excavation according to claim 2, characterized in that, The suspension connection frame includes a mounting frame and diagonal braces; the upper protective hanger can be welded to the last section of the trolley by the cooperation of the mounting frame and diagonal braces.

4. The protective device for installing the extended frame of a continuous belt conveyor for roadway excavation according to claim 3, characterized in that, The mounting frame consists of two channel steel beams and several crossbeams; The two channel steel beams are symmetrically arranged, and the several crossbeams are equidistantly arranged between the two channel steel beams and fixedly connected to the channel steel beams, thereby forming an installation frame for suspending the upper roller assembly. The diagonal brace consists of two connecting beams. One end of each connecting beam is symmetrically positioned on two channel steel beams, and the other end is connected to the last section of the trolley, thus reinforcing the connection between the suspension connecting frame and the last section of the trolley.

5. The protective device for installing the extended frame of a continuous belt conveyor for roadway excavation according to claim 2, characterized in that, The suspended roller groups are provided with protective steel mesh underneath, extending from the head end to the end end of the suspended roller groups.

6. The protective device for installing the extended frame of a continuous belt conveyor for tunnel excavation according to claim 1, characterized in that, The lower protective hanger consists of an guide roller hanger and a protective chamber, with the guide roller hanger and the protective chamber being connected in conjunction.

7. The protective device for installing the extended frame of a continuous belt conveyor for tunnel excavation according to claim 6, characterized in that, The guide roller hanger is made of four rectangular tubes welded into a frame. The bottom of the frame is equipped with a mounting bracket for the guide roller, and the top of the frame is equipped with four connecting rods, which can be welded to the upper protective hanger.

8. The protective device for installing the extended frame of a continuous belt conveyor for roadway excavation according to claim 6, characterized in that, The protective cabin is welded together from two side angle steels, an upper platform steel plate, and a lower isolation steel plate. The angle steels are located on both sides of the upper platform steel plate and serve as the connecting parts between the protective cabin and the guide roller hanger. The platform steel plate can hold the pre-installed roller hanger. The lower isolation steel plate is located at the bottom of the upper platform steel plate and can separate the protective cabin from the installation area at the bottom.

9. The protective device for installing the extended frame of a continuous belt conveyor for tunnel excavation according to claim 1, characterized in that, The support slide is welded from steel profiles, with a section of channel steel with the slot facing upward on each of its left and right sides, which can be used to support the longitudinal beams when installing the extension frame.

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