Round shed heading machine

Abstract

The utility model discloses a round shed heading machine which comprises a body portion, a cutting portion is fixedly arranged at the front end of the body portion, and a walking portion is arranged on the lower portion of the body portion. The cutting part comprises a speed reducer, the speed reducer is fixedly connected with a motor sleeve through a bolt, and two first oil cylinders are fixedly installed between the motor sleeve and the motor frame and used for adjusting the distance between the motor sleeve and the motor frame; the rear end of the speed reducer is connected with a cutting motor, a sealing end cover is installed at the bottom of the cutting head, and a wear-resistant welding block is arranged on the side face of the tail of the cutting head and protrudes out of the sealing end cover. According to the utility model, the cutting head is in a relatively sealed operation environment, the rotation speed state of the cutting head is improved by utilizing the connectivity of the bearing and the main shaft, the direct entry of dust is reduced, the stability of the whole telescopic part is stronger, the labor is saved, the working efficiency is improved, the economic benefit is increased, and the whole is firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machines, in particular to a round shed tunnel boring machine. Background Art

[0002] In the construction of coal mines, highway tunnels, metal mines, railway tunnels, subways, etc., roadheaders have been widely used because they can cut and transport materials. At present, in mine tunnel excavation projects, in order to alleviate the stress concentration of the bottom plate, the circular cross-section tunnel bottom plate backfill mining process is generally used instead of the original flat bottom plate tunnel excavation process. The whole machine of the roadheader is mainly divided into: cutting part, shovel part, transportation part, main body, walking part, rear support part, etc. When working, the cutting head of the cutting part cuts on the tunnel section, the shovel part collects the material, and the transportation part transports the broken material.

[0003] However, when the tunnel boring machine in the prior art is in use, the multiple cutting blades fixed on the outer surface of the cutting head are subjected to excessive stress and are easily broken, affecting the processing efficiency. In addition, there is a large amount of dust in the operating environment of the tunnel boring machine in the prior art, and the dust enters the interior of the components, increasing the wear of the components and reducing the service life of the components.

[0004] At the same time, the tail of the telescopic cutting head of the traditional tunnel boring machine is open. During the cutting operation, coal dust can easily enter the sealing part from the open tail end. During the rotation process, the coal dust is brought into the seal and damaged. If it is not discovered in time, it will cause damage to the bearing, thereby preventing the tunneling work from proceeding smoothly. The cutting head needs to be removed for oiling, which affects work efficiency and increases labor costs and safety hazards. Utility Model Content

[0005] The purpose of this utility model is to solve the above problems in the prior art. This device places the cutting head in a relatively sealed operating environment, utilizes the connectivity of the bearing and the main shaft to increase the rotational speed of the cutting head, and reduces the direct entry of dust through the sealed end cover design at the tail of the cutting head. The optimized design and manufacturing of the telescopic part of the tunnel boring machine pay more attention to the humanized design, and make the overall telescopic part more stable. While saving manpower, it improves work efficiency, increases economic benefits, and is more reliable as a whole.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The round shed tunnel boring machine comprises: a main body, a cutting part is fixedly provided at the front end of the main body, and a walking part is provided at the lower part of the main body; the cutting part comprises a reducer, the reducer is fixedly connected to the motor sleeve bolt, and two oil cylinders are fixedly installed between the motor sleeve and the motor frame for adjusting the distance between the motor sleeve and the motor frame; the rear end of the reducer is connected to the cutting motor, and a telescopic arm is fixedly provided at the front end of the reducer, and an oil filling port is provided on the surface of the telescopic outer cylinder of the telescopic arm, and a bearing is fixedly provided in the inner ring of the bearing, and a main shaft is fixedly provided at the front end of the main shaft, and a cutting head is fixedly provided at the bottom of the cutting head with a sealing end cover, and a wear-resistant welding block is provided on the side of the tail of the cutting head, and the wear-resistant welding block is fixed at the connection position between the bottom of the cutting head and the sealing end cover, and the wear-resistant welding block protrudes from the sealing end cover.

[0008] The walking part includes multiple groups of positioning pins, and a pressure plate is fixedly provided on the outer side of each group of positioning pins; a pushing frame is provided at the front lower part of the main body, and the pushing frame is connected to the pushing arm, and two oil cylinders are fixedly installed between the pushing frame and the pushing arm.

[0009] A push frame is fixedly installed on one side of the outer wall of the main body, and a shovel plate part is connected to the front end of the push frame, wherein the shovel plate part includes a front transport groove, and the front transport groove is opened inside the shovel plate part. An operating table, a hydraulic system and an electrical system are fixedly arranged on the main body.

[0010] A walking part is fixedly installed on the lower part of the main body, and a rear support frame is provided on the walking part and the rear part of the main body. A lubrication system is distributed on the rear support frame. A transport part is fixedly installed on one side of the outer wall of the main body, wherein the transport part also includes a rear transport groove, which is opened inside the transport part. A high-strength bolt hinge is fixedly inserted on the inner surface wall of the rear transport groove, and a second transport connecting frame is movably sleeved on the outer surface wall of the high-strength bolt hinge.

[0011] This device places the cutting head in a relatively sealed operating environment and utilizes the connectivity between the bearing and the main shaft to increase the rotational speed of the cutting head. The sealing end cover design at the tail of the cutting head on the outer wall of the telescopic arm reduces the direct entry of dust. The optimized design and manufacturing of the telescopic part of the tunnel boring machine pay more attention to humanized design, and make the overall telescopic part more stable. While saving manpower, it improves work efficiency, increases economic benefits, and is more reliable as a whole.

[0012] This device adds multiple diameters of positioning pins on both sides and multiple light holes on the front, which are connected with bolts and nuts. This makes the walking part and the main body fit more firmly and will not shear the connecting bolts. This brings great convenience to the maintenance personnel of the tunnel boring machine, thereby ensuring the safety of the maintenance personnel and ensuring safe production. After the transformation, it not only saves a lot of energy of the maintenance personnel, but also effectively improves work efficiency, which extends the service life of the equipment and reduces operating costs.

[0013] By increasing the telescopic amount and the lying amount of the cutting part of the tunnel boring machine, the cutting rate is improved, the telescopic amount of the shovel part is realized, and the shipment volume is increased in conjunction with the increase in the telescopic amount of the cutting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0016] Figure 3-1 This is a schematic diagram of the cross-sectional structure of the cutting portion of the utility model;

[0017] Figure 3-2 This is a partial cross-sectional structural diagram of the cutting portion of the utility model;

[0018] Figure 4 This is an enlarged schematic diagram of the sealing portion of the cutting part of the utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the main body and the walking part of the utility model;

[0020] Figure 6 This is a schematic diagram of the telescopic shovel of the utility model.

[0021] Legend: 1. Cutting part; 2. Shovel part; 3. Main body; 4. Travel part; 5. Operating table; 6. Hydraulic system; 7. Electrical system; 8. Lubrication system; 9. Rear support frame; 10. Transport part; 1011. Rear trough of transport one; 1012. Connecting frame of transport two; 21. Front trough of transport one; 101. Reducer; 102. Spindle; 103. Bearing; 104. Wear-resistant welding block; 105. Sealing end cover; 106. Oil filling port; 107. Cylinder one; 108. Telescopic arm; 109. Cutting head; 110. Cutting motor; 111. Telescopic sleeve; 112. Motor frame; 401. Positioning pin; 402. Press plate; 501. Sliding frame; 502. Cylinder two; 503. Push arm. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1, as Figure 1 As shown, the utility model includes a main body 3, a cutting part 1 is fixedly provided at the front end of the main body 3, and a walking part 4 is provided at the lower part of the main body 3;

[0025] The cutting part 1 includes a reducer 101, which is fixedly connected to the motor sleeve 111 with bolts. Two oil cylinders 107 are fixedly installed between the motor sleeve 111 and the motor frame 112 for adjusting the distance between the motor sleeve 111 and the motor frame 112; the motor is sheathed with an inner cylinder 114, which is also sheathed on the outside of the reducer 101; the motor frame 112 is sheathed on the outside of the inner cylinder 114, and the inner cylinder 114 can slide relative to the motor frame 112.

[0026] The rear end of the reducer 101 is connected to a cutting motor 110. The front end of the reducer 101 is fixedly provided with a telescopic arm 108. The telescopic outer cylinder surface of the telescopic arm 108 is provided with an oil filling port 106. The inner cavity of the telescopic arm 108 is fixedly provided with a bearing 103. The inner ring of the bearing 103 is fixedly provided with a main shaft 102. The front end of the main shaft 102 is fixed with a cutting head 109. The bottom of the cutting head 109 is installed with a sealing end cover 105. The tail side of the cutting head 109 is provided with a wear-resistant welding block 104, which protrudes from the sealing end cover 105. The sealing end cover 105 is fixed to the bottom of the cutting head 109 by screws, and the wear-resistant welding block 104 is fixed to the connection between the bottom of the cutting head 109 and the sealing end cover 105 by welding.

[0027] The overall effect achieved by the cutting part 1 is that this device places the cutting head 109 in a relatively sealed operating environment, utilizes the connectivity of the bearing 103 and the main shaft 102, and increases the rotational speed of the cutting head 109, thereby reducing the direct entry of dust into the tunnel boring machine. While saving manpower, it improves work efficiency, increases economic benefits, and is more reliable overall.

[0028] A push frame 501 is provided on one side of the outer wall of the main body 3, and the front end of the push frame 501 is connected to the shovel plate 2; a push arm 503 and a second oil cylinder 502 are provided between the push frame 501 and the main body 3;

[0029] The shovel plate part 2 includes a pre-transport groove 21, which is opened inside the shovel plate part 2. An operating platform 5, a hydraulic system 6 and an electrical system 7 are fixedly installed on the main body part 3. The walking part 4 is fixedly installed on the lower part of the main body part 3. The walking part 4 and the rear of the main body part 3 are both provided with a rear support frame 9. The lubrication system 8 is distributed on the rear support frame 9. The cutting part 1 is installed at the front end of the main body part 3. Four positioning pins 401 are installed at the connection between the main body part 3 and the walking part 4. The diameter of the four positioning pins 401 is 50 cm. A pressure plate 402 is fixedly provided on one side of the outer wall of each of the four positioning pins 401.

[0030] like Figure 1 As shown, a transport portion 10 is fixedly installed on one side of the outer wall of the main body 3, wherein the transport portion 10 also includes a rear transport groove 1011, the rear transport groove 1011 is opened inside the transport portion 10, a high-strength bolt hinge is fixedly inserted into the inner surface wall of the rear transport groove 1011, and the outer surface wall of the high-strength bolt hinge is movably sleeved with a second transport connecting frame 1012.

[0031] The effect achieved by the entire transport part 10 is: when the cutting motor 110 drives the cutting head 109 to rotate and cut, the telescopic arm 108 pushes the cutting head 109 forward, increasing the cutting range and lying depth of the tunnel boring machine, and the main shovel plate on the shovel plate part 2 and the first transport front trough 21 are connected by fixed parts and telescopic parts on the walking part 4, so that the upper shovel plate and the conveyor can move forward and backward synchronously, so as to cooperate with the telescopic movement of cutting, complete the smooth and complete shipment after crushing, and will not affect the working efficiency of the tunnel boring machine due to cutting inventory. The second transport connecting frame 1012 completely breaks the existing design method, and is hingedly connected to the first transport rear trough 1011 with high-strength bolts. Moreover, the structural design greatly shortens the distance of the rotation center of the second transport connecting frame 1012, thereby reducing the circumferential range of the drop point of the transport part 10, and better solving the stability problem of the drop.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A round shed tunnel boring machine, characterized by: include: The invention relates to a main body (3), wherein a cutting part (1) is fixedly provided at the front end of the main body (3), and a walking part (4) is provided at the lower part of the main body (3); the cutting part (1) comprises a reducer (101), the reducer (101) is fixedly connected to a motor sleeve (111) by bolts, and two oil cylinders (107) are fixedly installed between the motor sleeve (111) and the motor frame (112) for adjusting the distance between the motor sleeve (111) and the motor frame (112); the rear end of the reducer (101) is connected to a cutting motor (110), and the front end of the reducer (101) is fixedly provided with a telescopic arm (108). ), an oil filling port (106) is provided on the surface of the telescopic outer cylinder of the telescopic arm (108), a bearing (103) is fixedly provided in the inner cavity of the telescopic arm (108), a main shaft (102) is fixedly provided on the inner ring of the bearing (103), a cutting head (109) is fixedly provided at the front end of the main shaft (102), a sealing end cover (105) is installed at the bottom of the cutting head (109), a wear-resistant welding block (104) is provided on the side of the tail of the cutting head (109), the wear-resistant welding block is fixed at the connection portion between the bottom of the cutting head (109) and the sealing end cover (105), and the wear-resistant welding block (104) protrudes from the sealing end cover (105).

2. The round shed tunnel boring machine according to claim 1, characterized in that: The walking portion (4) includes a plurality of groups of positioning pins (401), and a pressure plate (402) is fixedly provided on the outer side of each group of positioning pins (401); a push frame (501) is provided at the front lower part of the main body (3), and the push frame (501) is connected to a push arm (503); and two oil cylinders (502) are fixedly installed between the push frame (501) and the push arm (503).

3. The round shed tunnel boring machine according to claim 1, characterized in that: A push frame is fixedly mounted on one side of the outer wall of the main body (3), and a shovel plate portion (2) is connected to the front end of the push frame, wherein the shovel plate portion (2) includes a front transport groove (21), and the front transport groove (21) is opened inside the shovel plate portion (2). An operating table (5), a hydraulic system (6) and an electrical system (7) are fixedly arranged on the main body (3).

4. The round shed tunnel boring machine according to claim 1, characterized in that: A walking portion (4) is fixedly mounted on the lower portion of the main body (3), and a rear support frame (9) is provided at the rear of the walking portion (4) and the main body (3), and a lubrication system (8) is distributed at the rear support frame (9). A transport portion (10) is fixedly mounted on one side of the outer wall of the main body (3), wherein the transport portion (10) further comprises a rear transport groove (1011), the rear transport groove (1011) is provided inside the transport portion (10), and a high-strength bolt hinge is fixedly inserted into the inner surface wall of the rear transport groove (1011), and a second transport connecting frame (1012) is movably sleeved on the outer surface wall of the high-strength bolt hinge.

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