Shield tunneling machine cutterhead transmission type cutter head structure

Abstract

The invention discloses a shield tunneling machine cutterhead transmission type cutter head structure, and belongs to the technical field of shield tunneling machine construction. The shield tunneling machine cutterhead transmission type tool bit structure comprises a cutterhead, a plurality of penetrating holes are formed in the cutterhead, tool bits are arranged in the penetrating holes, the shield tunneling machine cutterhead transmission type tool bit structure comprises the cutterhead, a plurality of motors and a plurality of rotating rods, each penetrating hole corresponds to one motor, one rotating rod and two tool bits, the motors are fixed to the back face of the cutterhead, and the rotating rods are fixed to the back face of the cutterhead. An output shaft of the motor is fixedly connected with the middle of the rotating rod, the two ends of the rotating rod are each rotationally connected with one tool bit, the motor has the torque maintaining function, and the motor acts so that the rotating rod can drive the two tool bits to achieve tool changing in the penetrating holes. According to the shield tunneling machine cutter head transmission type cutter head structure, the cutter head can be rapidly replaced, mud cakes on the cutter head can be effectively cleaned, the high temperature problem caused by eccentric wear of a shield tunneling cutter is solved, the mud cake forming problem is further reduced, the problem that the shield tunneling machine needs to be completely shut down to replace the cutter is avoided, and the construction progress is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of shield machine construction, and in particular to a cutter head structure of a shield machine cutter disc transmission type. Background Art

[0002] Shield tunnel boring machine, referred to as shield machine. It is a special engineering machinery for tunnel excavation. Modern shield tunnel boring machine integrates optical, mechanical, electrical, hydraulic, sensor and information technology. It has the functions of excavating and cutting soil, conveying soil ballast, assembling tunnel lining, measuring and guiding deviation correction, etc. It involves multiple disciplines and technologies such as geology, civil engineering, machinery, mechanics, hydraulics, electricity, control, and measurement. It must be designed and manufactured according to different geology, and the reliability requirements are extremely high. Shield tunnel boring machine has been widely used in subway, railway, highway, municipal, hydropower and other tunnel projects.

[0003] The cutterhead of the existing shield machine is the most easily damaged part during operation. When the cutterhead is working, the eccentric wear of the cutter increases the temperature of the cutter itself, making it easy for the cutter to form mud cakes. The existing shield machine solves the above problem by suspending the operation and replacing the cutter, which makes the above operation process complicated, costly, time-consuming, and prolongs the construction period of the shield machine. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and to provide a shield machine cutter head structure that can quickly replace the cutter head, effectively clean the mud cake on the cutter head, which is beneficial to the heat dissipation of the cutter head, solves the high temperature problem caused by eccentric wear of the shield cutter, further reduces the problem of mud cake formation, avoids the need to completely shut down the shield machine to replace the cutter, and speeds up the construction progress.

[0005] The present invention provides a shield machine cutter head structure with a cutter disc drive, including a cutter disc having a plurality of through holes, each of which is provided with a cutter head. The shield machine cutter disc drive cutter head structure includes a cutter disc and also a plurality of motors and a plurality of rotating rods, each of which corresponds to a motor, a rotating rod and two cutter heads, the motor is fixed on the back of the cutter disc, the output shaft of the motor is fixedly connected to the middle part of the rotating rod, and the two ends of the rotating rod are respectively rotatably connected to one of the cutter heads, the motor has a function of maintaining torque, and the motor moves so that the rotating rod drives the two cutter heads to realize tool change in the through holes, the cutter head located in the through holes is a working cutter head, and the cutter head located outside the through holes is an idle cutter head; a plurality of U-shaped cleaning brushes are fixedly provided on the back of the cutter disc, the inner brush surface of each U-shaped cleaning brush surrounds one of the idle cutter heads, and in the process of the idle cutter head driven by the rotating rod to rotate, the U-shaped cleaning brush cleans the mud cake on the idle cutter head.

[0006] After the cutter disc has been working continuously, the temperature of the working cutter head in the perforation increases, and mud cakes are adhered to the surface. After the cutter disc is controlled to stop working, each motor is started, and the motor drives the rotating rod to rotate. After the rotating rod rotates, the position of the working cutter head and the idle cutter head are swapped, and when the working cutter head is replaced in the U-shaped cleaning brush, the U-shaped cleaning brush removes the mud cakes on the working cutter head, the working cutter head cools down, and becomes a new idle cutter head. After the original idle cutter head is replaced in the perforation, it becomes a new working cutter head, so that the motor maintains the torque and controls the cutter disc to work again. The cutter head transmission structure of the shield machine cutter disc can quickly replace the cutter head, can effectively clean the mud cakes on the cutter head, is conducive to the heat dissipation of the cutter head, solves the high temperature problem caused by the eccentric wear of the shield cutter, further reduces the problem of mud cake formation, avoids the problem of the shield machine needing to completely shut down to replace the cutter, and speeds up the construction progress.

[0007] Preferably, a plurality of brackets are fixedly provided on the back side of the cutter disc, each bracket corresponds to one of the through holes, a rotating shaft is rotatably provided on the bracket, the rotating shaft is fixedly connected to the middle part of the rotating rod, and the end of the rotating shaft is fixedly connected to the output shaft of the motor.

[0008] The bracket can reduce the force on the motor and make the cutter head work more stably.

[0009] Preferably, the bracket includes sub-brackets respectively arranged on both sides of the rotating rod, each of the sub-brackets is provided with a rotating hole, and the inner wall of each rotating hole is rotatably connected to the rotating shaft.

[0010] The forces on both sides of the shaft are balanced, making the cutter head work more stably.

[0011] Preferably, both end surfaces of the rotating rod are provided with U-shaped grooves, and the two opposite side surfaces of the U-shaped groove are rotatably connected with a cutter head shaft, and the cutter head shaft is fixedly connected to the cutter head.

[0012] Preferably, the cross-sectional trajectory of the perforation on the cutter disc is an arc, the center of the arc coincides with the axis of the rotating shaft, and the maximum distance between the edge of the cutter head and the rotating shaft is less than the radius of the arc.

[0013] The purpose is to ensure that the two cutter heads can smoothly enter and exit the perforation during the rotation of the rotating rod, thereby avoiding friction between the cutter heads and the inner wall of the perforation.

[0014] Preferably, the motor is fixedly arranged on a motor seat, and the motor seat is fixedly connected to the cutter disc.

[0015] Preferably, the inner brush surface of the U-shaped cleaning brush has a plurality of steel brush wires, and the ends of the steel brush wires are used to brush off the mud cake on the idle cutter head.

[0016] Preferably, some of the rotating shafts on the cutter disc are coaxially fixedly connected, so that one motor can simultaneously drive multiple rotating rods and the cutter heads on the rotating rods to rotate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] After the cutter disc has been working continuously, the temperature of the working cutter head in the perforation increases, and mud cakes are adhered to the surface. After the cutter disc is controlled to stop working, each motor is started, and the motor drives the rotating rod to rotate. After the rotating rod rotates, the position of the working cutter head and the idle cutter head are swapped, and when the working cutter head is replaced in the U-shaped cleaning brush, the U-shaped cleaning brush removes the mud cakes on the working cutter head, the working cutter head cools down, and becomes a new idle cutter head. After the original idle cutter head is replaced in the perforation, it becomes a new working cutter head, so that the motor maintains the torque and controls the cutter disc to work again. The cutter head transmission structure of the shield machine cutter disc can quickly replace the cutter head, can effectively clean the mud cakes on the cutter head, is conducive to the heat dissipation of the cutter head, solves the high temperature problem caused by the eccentric wear of the shield cutter, further reduces the problem of mud cake formation, avoids the problem of the shield machine needing to completely shut down to replace the cutter, and speeds up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A diagram showing the positional relationship between the perforation and the cutter head of the present invention;

[0020] Figure 2 It is an assembly diagram of the present invention;

[0021] Figure 3 It is a stereogram of the present invention.

[0022] Description of reference numerals:

[0023] 1. Cutter disc, 2. Perforation, 3. Cutter head, 4. Motor, 5. Rotating rod, 6. U-shaped cleaning brush, 7. Rotating shaft, 8. Sub-bracket, 9. Motor base. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] The drawings in the present invention are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams of the structures.

[0027] The shield machine cutter head structure provided by the present invention is as follows: Figure 1 to Figure 3 The utility model comprises a cutter disc 1, which has a plurality of through holes 2, each of which is provided with a cutter head 3. The cutter disc transmission cutter head structure of the shield machine also comprises a plurality of motors 4 and a plurality of rotating rods 5, each of which corresponds to a motor 4, a rotating rod 5 and two cutter heads 3. The motor 4 is fixed on the back of the cutter disc 1, and the output shaft of the motor 4 is fixedly connected to the middle part of the rotating rod 5. The two ends of the rotating rod 5 are respectively rotatably connected to one of the cutter heads 3. The motor 4 has the function of maintaining torque. The motor 4 moves so that the rotating rod 5 drives the two cutter heads 3 to realize tool change in the through holes 2. The cutter head 3 located in the through holes 2 is a working cutter head, and the cutter head 3 located outside the through holes 2 is an idle cutter head. A plurality of U-shaped cleaning brushes 6 are fixedly provided on the back of the cutter disc 1, and the inner brush surface of each U-shaped cleaning brush 6 surrounds one of the idle cutter heads. When the idle cutter head is driven to rotate by the rotating rod 5, the U-shaped cleaning brush 6 cleans the mud cake on the idle cutter head.

[0028] After the cutter disc 1 has been working continuously, the temperature of the working cutter head in the perforation 2 increases, and mud cakes are adhered to the surface. The cutter disc 1 is controlled to stop working, and each motor 4 is started. The motor 4 drives the rotating rod 5 to rotate. After the rotating rod 5 rotates, the position of the working cutter head and the idle cutter head are swapped. When the working cutter head is replaced in the U-shaped cleaning brush 6, the U-shaped cleaning brush 6 brushes off the mud cakes on the working cutter head, and the working cutter head cools down and becomes a new idle cutter head. The original idle cutter head becomes a new working cutter head after being replaced in the perforation 2, so that the motor 4 maintains the torque and controls the cutter disc 1 to work again. The cutter head transmission structure of the shield machine cutter disc can quickly replace the cutter head, can effectively clean the mud cakes on the cutter head, is conducive to the heat dissipation of the cutter head, solves the high temperature problem caused by the eccentric wear of the shield cutter, further reduces the problem of mud cake formation, avoids the problem of the shield machine needing to completely stop to replace the cutter, and speeds up the construction progress.

[0029] In this embodiment, Figure 2-3A plurality of brackets are fixedly provided on the back of the cutter disc 1, each bracket corresponds to one of the through holes 2, a rotating shaft 7 is rotatably provided on the bracket, the rotating shaft 7 is fixedly connected to the middle part of the rotating rod 5, and an end of the rotating shaft 7 is fixedly connected to the output shaft of the motor 4.

[0030] The bracket can reduce the stress on the motor, making the cutter head 3 work more stably.

[0031] In this embodiment, Figure 2-3 The bracket includes sub-brackets 8 respectively arranged on both sides of the rotating rod 5 , each of the sub-brackets 8 is provided with a rotating hole, and the inner wall of each rotating hole is rotatably connected to the rotating shaft 7 .

[0032] The forces on both sides of the rotating shaft 7 are balanced, so that the cutter head 3 works more stably.

[0033] In this embodiment, Figure 2-3 Both end surfaces of the rotating rod 5 are provided with U-shaped grooves, and the two opposite side surfaces of the U-shaped groove are rotatably connected with a cutter head shaft, and the cutter head shaft is fixedly connected to the cutter head 3.

[0034] In this embodiment, Figure 1 The cross-sectional trajectory of the perforation 2 on the cutter disc 1 is an arc, the center of the arc coincides with the axis of the rotating shaft 7, and the maximum distance between the edge of the cutter head 3 and the rotating shaft 7 is less than the radius of the arc.

[0035] The purpose is to ensure that the two cutter heads 3 can smoothly enter and exit the through hole 2 during the rotation of the rotating rod 5, thereby avoiding friction between the cutter heads 3 and the inner wall of the through hole 2.

[0036] In this embodiment, Figure 2 The motor 4 is fixedly arranged on a motor base 9 , and the motor base 9 is fixedly connected to the cutter head 1 .

[0037] In this embodiment, Figure 2 The inner brush surface of the U-shaped cleaning brush 6 has a plurality of steel brush wires, and the ends of the steel brush wires are used to brush off the mud cake on the idle cutter head.

[0038] In this embodiment, some of the rotating shafts 7 on the cutter disc 1 are coaxially fixedly connected, so that one motor 4 can simultaneously drive multiple rotating rods 5 and the cutter heads 3 on the rotating rods 5 to rotate.

[0039] The method of using the shield machine cutter head structure of the present invention is as follows:

[0040] After the cutter disc 1 has been working continuously, the temperature of the working cutter head in the perforation 2 increases, and mud cakes are adhered to the surface. After the cutter disc 1 is controlled to stop working, each motor 4 is started, and the motor 4 drives the rotating rod 5 to rotate. After the rotating rod 5 rotates, the position of the working cutter head and the idle cutter head are swapped, and when the working cutter head is replaced in the U-shaped cleaning brush 6, the U-shaped cleaning brush 6 brushes off the mud cakes on the working cutter head, the working cutter head cools down, and becomes a new idle cutter head. After the original idle cutter head is replaced in the perforation 2, it becomes a new working cutter head, so that the motor 4 maintains the torque and controls the cutter disc 1 to work again. The cutter head transmission structure of the shield machine cutter disc can quickly replace the cutter head, can effectively clean the mud cakes on the cutter head, is conducive to the heat dissipation of the cutter head, solves the high temperature problem caused by the eccentric wear of the shield cutter, further reduces the problem of mud cake formation, avoids the problem of the shield machine needing to completely stop to replace the cutter, and speeds up the construction progress.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shield machine cutter head structure, comprising a cutter head (1), the cutter head (1) having a plurality of through holes (2), each through hole (2) being provided with a cutter head (3), characterized in that: It also comprises a plurality of motors (4) and a plurality of rotating rods (5), each perforation (2) corresponds to a motor (4), a rotating rod (5) and two cutter heads (3), the motor (4) is fixed on the back of the cutter disc (1), the output shaft of the motor (4) is fixedly connected to the middle part of the rotating rod (5), and the two ends of the rotating rod (5) are respectively rotatably connected to one of the cutter heads (3), the motor (4) has a function of maintaining torque, the motor (4) moves so that the rotating rod (5) drives the two cutter heads (3) to realize tool change in the perforation (2), the cutter head (3) located in the perforation (2) is a working cutter head, and the cutter head (3) located outside the perforation (2) is an idle cutter head; A plurality of U-shaped cleaning brushes (6) are fixedly provided on the back of the cutter disc (1), and the inner brush surface of each U-shaped cleaning brush (6) surrounds one of the idle cutter heads. When the idle cutter head is driven to rotate by the rotating rod (5), the U-shaped cleaning brush (6) cleans the mud cake on the idle cutter head.

2. The shield machine cutter head structure according to claim 1, characterized in that: A plurality of brackets are fixedly provided on the back of the cutter disc (1), each bracket corresponding to one of the through holes (2), a rotating shaft (7) is rotatably provided on the bracket, the rotating shaft (7) is fixedly connected to the middle part of the rotating rod (5), and the end of the rotating shaft (7) is fixedly connected to the output shaft of the motor (4).

3. The shield machine cutter head structure according to claim 2, characterized in that: The bracket comprises sub-brackets (8) respectively arranged on both sides of the rotating rod (5), each of the sub-brackets (8) is provided with a rotating hole, and the inner wall of each rotating hole is rotatably connected to the rotating shaft (7).

4. The shield machine cutter head structure according to claim 1, characterized in that: Both end surfaces of the rotating rod (5) are provided with U-shaped grooves, and the two opposite side surfaces of the U-shaped groove are rotatably connected to a cutter head shaft, and the cutter head shaft is fixedly connected to the cutter head (3).

5. The shield machine cutter head structure according to claim 2, characterized in that: The cross-sectional trajectory of the perforation (2) on the cutter disc (1) is an arc, the center of the arc coincides with the axis of the rotating shaft (7), and the maximum distance between the edge of the cutter head (3) and the rotating shaft (7) is less than the radius of the arc.

6. The shield machine cutter head structure according to claim 1, characterized in that: The motor (4) is fixedly arranged on a motor seat (9), and the motor seat (9) is fixedly connected to the cutter disc (1).

7. The shield machine cutter head structure according to claim 1, characterized in that: The inner brush surface of the U-shaped cleaning brush (6) has a plurality of steel brush wires, and the ends of the steel brush wires are used to brush off the mud cake on the idle cutter head.

8. The shield machine cutter head structure according to claim 2, characterized in that: Some of the rotating shafts (7) on the cutter disc (1) are coaxially fixedly connected, so that one motor (4) can simultaneously drive a plurality of rotating rods (5) and the cutter heads (3) on the rotating rods (5) to rotate.

Images