A new type of easily replaceable hob cutter system and its installation method

Abstract

The present invention discloses a new type of easily replaceable hob tool system and its installation method, which solves the technical problem that the current disc-shaped hob needs the cooperation of multiple people to disassemble, which is time-consuming and labor-intensive, and it is difficult to realize the automation of tool replacement in this installation method. The present invention includes a tool holder, a tool shaft seat is provided in the tool holder, a hob is provided on the tool shaft seat, and a locking device is provided on the tool shaft seat; the locking device includes a screw and a slider, the upper end of the screw is connected to the slider, and the lower end of the screw is connected to the tool shaft seat. The present invention makes the installation, locking and removal process of the hob simpler, facilitates the automation of tool replacement, and provides technical support for the efficient and safe "machine-for-man" operation mode to realize tool detection and tool changing operations.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction, and in particular to a novel roller cutter system which is easy to replace for a tunnel boring machine and an installation method thereof. Background Art

[0002] During the construction of full-section tunnel boring machines, the consumption of cutting tools is large and the replacement is frequent. The time for cutting tool detection and cutting tool changing accounts for more than 10% of the tunnel construction cycle. The existing cutting tool detection and cutting tool changing work mainly relies on manual operations. Under the construction environment of deep burial and high water pressure, there are great safety hazards in the operation, and major safety accidents such as casualties are prone to occur. According to statistics, nearly 70% of tunnel construction safety accidents are directly related to manual cutting tool changing operations. The international industry problem of "difficult detection and dangerous cutting tool changing" has become a bottleneck restricting the safety and efficiency of tunnel construction under complex geological conditions. The current huge market demand for subway, highway, railway and other tunnels has put forward higher requirements for the construction efficiency and safety of full-section tunneling equipment.

[0003] At present, the disc cutters of shield machines and TBMs are mainly fixed on the cutter holder by C-shaped blocks and bolts. Although this method has high reliability, it requires the cooperation of multiple people to disassemble, which is time-consuming and labor-intensive. In addition, this installation method makes it difficult to realize the automation of cutter replacement. Therefore, it is imperative to realize cutter detection and cutter replacement operations in an efficient and safe "machine-for-man" operation mode. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the current disc cutter needs the cooperation of multiple people to disassemble, which is time-consuming and labor-intensive, and it is difficult to realize the automation of tool replacement with this installation method. A new type of roller cutter system and its installation method which are easy to replace are provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a new type of easily replaceable hob tool system, including a tool seat, a tool shaft seat is provided in the tool seat, a hob is provided on the tool shaft seat, and a locking device is provided on the tool shaft seat; the locking device includes a screw and a slider, the upper end of the screw is connected to the slider, and the lower end of the screw is connected to the tool shaft seat.

[0006] The knife seat is provided with a limit block, and a V-shaped wedge surface is provided on the outer side of the limit block; the knife shaft seat is provided with a knife shaft sliding groove, and the sliding block is arranged in the knife shaft sliding groove.

[0007] The lower end of the screw rod is a spherical surface, a conical surface or a cylindrical surface, and the lower end of the screw rod is connected to the knife shaft seat.

[0008] The sliding block is provided with a wedge-shaped surface No. VI, which matches with the wedge-shaped surface No. V.

[0009] The screw rod is threadably connected to the slider.

[0010] A cylindrical groove is arranged on the upper part of the sliding block, and the upper end of the screw rod passes through the sliding block and extends into the cylindrical groove.

[0011] The two ends of the knife shaft seat are provided with protruding blocks, the outer surface of the protruding block is a wedge-shaped surface No. I, and the upper surface of the protruding block is a wedge-shaped surface No. II.

[0012] The tool holder is a cylindrical tube, and a convex ring is provided on the inner wall of the tool holder, and a limiting groove is formed between the convex ring and the limiting block; the bottom surface of the limiting groove is a wedge-shaped surface No. III, and the upper side surface of the limiting groove is a wedge-shaped surface No. IV; the wedge-shaped surface No. III cooperates with the wedge-shaped surface No. I, and the wedge-shaped surface No. IV cooperates with the wedge-shaped surface No. II.

[0013] A method for installing a new type of hob tool system that is easy to replace includes the following steps: ① Installation of the hob: firstly, a tool shaft seat with the hob is installed into the tool seat, and when the tool shaft seat reaches a defined position, the tool shaft seat is rotated until the tool shaft seat is in a clamped state in the tool seat;

[0014] ② Locking of the locking device: Turn the screw on the locking device to move the slider in the tool shaft groove on the tool shaft seat. When the slider is extended and reaches the limited position, it will press against the V-shaped wedge surface on the tool seat, so that the tool shaft seat and the tool seat are in a tight fit.

[0015] When the tool shaft seat described in step ① is in a clamped state in the tool holder, wedge surface No. I on the tool shaft seat is matched with wedge surface No. III on the tool holder, and wedge surface No. II on the tool shaft seat is matched with wedge surface No. IV on the tool holder, until the tool shaft seat is in a clamped state in the tool holder.

[0016] The present invention designs the hob tool system into three parts, namely a tool holder, a tool and a locking device, which completely changes the traditional tool system structure, makes the installation, locking and removal processes of the hob simpler, facilitates the automation of tool replacement, and provides technical support for the efficient and safe "machine-for-people" operation mode to realize tool detection and tool changing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the knife shaft seat and the knife seat matching each other in the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the knife holder of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the knife shaft seat of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the knife shaft seat, the locking device and the knife seat in cooperation with each other in the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the locking device of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the state in which the knife shaft seat of the present invention is installed into the knife seat;

[0024] Figure 8 This is a schematic diagram of the structure of the knife shaft seat in the rotating clamping state of the present invention;

[0025] Fig. 9 It is a structural schematic diagram of the locking device of the present invention when it is clamped into the knife seat. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0027] like Figures 1 to 9 As shown, a new type of hob tool system that is easy to replace includes a tool seat 3, a tool shaft seat 2 is provided in the tool seat 3, a hob 1 is provided on the tool shaft seat 2, and a locking device 4 is provided on the tool shaft seat 2; the locking device 4 includes a screw 401 and a slider 402, the upper end of the screw 401 is connected to the slider 402, and the lower end of the screw 401 is connected to the tool shaft seat 2. The hob 1 is fixedly connected to the tool shaft seat 2, the tool shaft seat 2 is installed in the tool seat 3, and the locking device 4 is inserted into the slot on the tool shaft seat 2 to prevent the tool shaft from rotating. The tool shaft seat is provided with a tool shaft groove, and the tool shaft of the hob extends into the tool shaft groove and is fixed. A chuck is provided at the upper end of the screw 401, and since the screw is turned by the robot end effector, the automatic installation and disassembly of the tool system is convenient.

[0028] The tool seat 3 is provided with a limit block 305 , and a V-shaped wedge surface 303 is provided on the outer side of the limit block 305 ; the tool shaft seat 2 is provided with a tool shaft slide groove 203 , and the slider 402 is arranged in the tool shaft slide groove 203 .

[0029] The lower end of the screw rod 401 is a spherical surface, a conical surface or a cylindrical surface, and the lower end of the screw rod 401 is connected to the cutter shaft seat 2. The lower end of the screw rod 401 is stuck in the cutter shaft seat 2, and the slide block 402 can be driven to slide upward or downward with the cutter shaft seat 2 as the bottom surface.

[0030] The sliding block 402 is provided with a wedge-shaped surface 403 No. VI, which matches with the wedge-shaped surface 303 No. V.

[0031] The screw rod 401 is threadedly connected to the slider 402. The screw rod 401 on the locking device 4 is connected to the slider 402 through a thread, and the screw rod 401 on the locking device 4 is connected to the tool shaft seat 2 through a bottom rotating surface such as a spherical surface, a conical surface, a cylindrical surface, etc., and the screw rod 401 rotates, and the slider moves in the tool shaft slide groove 203 and extends out of the tool shaft slide groove 203; after the tool shaft slide groove 203 extends out, it abuts against the V-shaped wedge surface 303, thereby preventing the tool shaft seat 2 from axially rotating.

[0032] The upper part of the slider 402 is provided with a cylindrical groove 404, and the upper end of the screw rod 401 passes through the slider 402 and then extends into the cylindrical groove 404. The upper end of the screw rod 401 does not extend out of the cylindrical groove 404 to prevent affecting the installation of the knife shaft seat. When the screw rod is turned, the turning device needs to extend into the cylindrical groove and contact the upper end of the screw rod.

[0033] The two ends of the knife shaft seat 2 are provided with protruding blocks 204, the outer surface of the protruding block 204 is a wedge-shaped surface 201 No. I, and the upper surface of the protruding block 204 is a wedge-shaped surface 202 No. II.

[0034] The knife seat 3 is a cylindrical tube, and a convex ring 304 is provided on the inner wall of the knife seat 3, and a limiting slide groove 306 is formed between the convex ring 304 and the limiting block 305; the bottom surface of the limiting slide groove 306 is a wedge surface 301 of number III, and the upper side surface of the limiting slide groove 306 is a wedge surface 302 of number IV; the wedge surface 301 of number III matches with the wedge surface 201 of number I, and the wedge surface 302 of number IV matches with the wedge surface 202 of number II. After the knife shaft seat is installed in the knife seat, it slides in the limiting slide groove with the convex ring 304 as support.

[0035] A method for installing a new type of hob tool system that is easy to replace includes the following steps: ① Installation of the hob: first, insert the tool shaft seat 2 with the hob into the tool seat 3, and rotate the tool shaft seat 2 when reaching a limited position until the tool shaft seat 2 is in a clamping state in the tool seat 3; Figure 7 and Figure 8 shown.

[0036] ② Locking of the locking device 4: Turn the screw 401 on the locking device 4 to move the slider 402 in the tool shaft slot 203 on the tool shaft seat 2. When the slider 402 is extended and reaches the limited position, it will abut against the V-shaped wedge surface 303 on the tool seat 3, so that the tool shaft seat 2 and the tool seat 3 are in a tight fit state, such as Fig. 9 shown.

[0037] When the tool shaft seat 2 described in step ① is in a clamped state in the tool seat 3, the wedge surface No. I 201 on the tool shaft seat 2 is matched with the wedge surface No. III 301 on the tool seat 3, and the wedge surface No. II 202 on the tool shaft seat 2 is matched with the wedge surface No. IV 302 on the tool seat 3, until the tool shaft seat 2 is in a clamped state in the tool seat 3.

[0038] The disassembly process of the hob tool system of the present invention is opposite to the above-mentioned installation process: when disassembling the tool system, firstly twist the screw 401 in the tool locking device 4 to separate the inclined surface on the slider 402 from the V-shaped wedge surface 303 on the tool holder 3 until the slider 402 is retracted into the tool shaft seat 2; then rotate the tool shaft seat 2 to loosen the fit between it and the tool holder 3 and take out the assembly of the tool shaft seat 2 and the hob 1.

Claims

1. A new type of hob tool system that is easy to replace, characterized by: The tool holder (3) comprises a tool shaft seat (2) disposed inside the tool holder (3), a roller (1) disposed on the tool shaft seat (2), and a locking device (4) disposed on the tool shaft seat (2); the locking device (4) comprises a screw rod (401) and a slider (402); the upper end of the screw rod (401) is connected to the slider (402), and the lower end of the screw rod (401) is connected to the tool shaft seat (2); The knife seat (3) is provided with a limit block (305), and a V-shaped wedge surface (303) is provided on the outer side of the limit block (305); the knife shaft seat (2) is provided with a knife shaft slide groove (203), and the slide block (402) is arranged in the knife shaft slide groove (203); The two ends of the knife shaft seat (2) are provided with protruding blocks (204), the outer surface of the protruding block (204) is a wedge-shaped surface No. I (201), and the upper surface of the protruding block (204) is a wedge-shaped surface No. II (202); A convex ring (304) is provided on the inner wall of the knife seat (3), and a limiting slide groove (306) is formed between the convex ring (304) and the limiting block (305); the bottom surface of the limiting slide groove (306) is a wedge-shaped surface No. III (301), and the upper side surface of the limiting slide groove (306) is a wedge-shaped surface No. IV (302); the wedge-shaped surface No. III (301) matches with the wedge-shaped surface No. I (201), and the wedge-shaped surface No. IV (302) matches with the wedge-shaped surface No. II (202); When the tool shaft seat (2) is in a clamped state in the tool seat (3), the wedge surface No. I (201) on the tool shaft seat (2) is matched with the wedge surface No. III (301) on the tool seat (3), and the wedge surface No. II (202) on the tool shaft seat (2) is matched with the wedge surface No. IV (302) on the tool seat (3), until the tool shaft seat (2) is in a clamped state in the tool seat (3); The locking device (4) is locked by rotating the screw (401) on the locking device (4) to move the slider (402) in the tool shaft slot (203) on the tool shaft seat (2). When the slider (402) is extended and reaches a limited position, it will abut against the V-shaped wedge surface (303) on the tool seat (3), so that the tool shaft seat (2) and the tool seat (3) are in a tight fit.

2. The new easily replaceable hob cutter system according to claim 1, characterized in that: The lower end of the screw rod (401) is a spherical surface, a conical surface or a cylindrical surface, and the lower end of the screw rod (401) is connected to the knife shaft seat (2).

3. The new easily replaceable hob tool system according to claim 1, characterized in that: The sliding block (402) is provided with a wedge-shaped surface No. VI (403), and the wedge-shaped surface No. VI (403) matches with the wedge-shaped surface No. V (303).

4. The new easily replaceable hob cutter system according to claim 3 is characterized in that: The screw rod (401) is threadedly connected to the slider (402).

5. The new easily replaceable hob cutter system according to claim 1, characterized in that: A cylindrical groove (404) is provided on the upper portion of the slider (402), and the upper end of the screw rod (401) passes through the slider (402) and then extends into the cylindrical groove (404).

6. The new easily replaceable hob cutter system according to claim 1, characterized in that: The knife seat (3) is a cylindrical tube.

7. A method for installing a new type of easily replaceable hob tool system according to any one of claims 1 to 6, characterized in that The following steps are involved: ① Installation of the hob: First, install the cutter shaft seat (2) with the cutter shaft into the cutter seat (3), and when the cutter shaft seat (2) reaches a defined position, rotate the cutter shaft seat (2) until the cutter shaft seat (2) is in a clamped state in the cutter seat (3); ② Locking of the locking device (4): The screw (401) on the locking device (4) is rotated to move the slider (402) in the tool shaft groove (203) on the tool shaft seat (2). When the slider (402) is extended and reaches a limited position, it will abut against the V-shaped wedge surface (303) on the tool seat (3), so that the tool shaft seat (2) and the tool seat (3) are in a tight fit.

8. The method for installing the new easily replaceable hob cutter system according to claim 7, characterized in that: When the tool shaft seat (2) described in step ① is in a clamped state in the tool seat (3), the wedge surface No. I (201) on the tool shaft seat (2) is matched with the wedge surface No. III (301) on the tool seat (3), and the wedge surface No. II (202) on the tool shaft seat (2) is matched with the wedge surface No. IV (302) on the tool seat (3), until the tool shaft seat (2) is in a clamped state in the tool seat (3).

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