CN205297587U - TBM combined material hobbing cutter girff - Google Patents

Abstract

The utility model discloses a TBM combined material hobbing cutter girff, including the blade holder, the blade holder is equipped with connecting piece and lower connecting piece from top to bottom respectively, is equipped with the enhancement backup pad between the lower connecting piece, be connected through fixing bolt between connecting piece and the blade holder down. The utility model discloses the blade holder uses the material that the hardenability is good, welding nature is good to make respectively with connecting piece about it, improved with the hardness of hobbing cutter knife rest contact, with cutter connection's reliability, increased the ability of shocking resistance, combatting earthquake and moving of whole girff, improved its life.

Description

TBM Composite Hob Cutter Box

technical field

The utility model relates to the technical field of shield machine hobs, in particular to a TBM composite material hob cutter box.

Background technique

During the rock-breaking process of the hob, the rock-breaking pressure of the hob and the tangential force of the rotation of the hob are transmitted to the tool seat through the shaft, end cover, bracket or block of the hob, and then through The tool holder is transferred to the cutter head.

During the excavation process, especially in the excavation of the full-face hard rock formation, according to the rock-breaking mechanism of the hob, under the action of the hob to break the rock, a large impact and vibration are generated, and the impact and vibration pass through the cutter shaft of the hob Parts such as end caps, brackets or blocks are transferred to the tool holder, and then transferred to the cutter head through the tool holder.

The contact surface between the cutter shaft, end cover, bracket or block and other parts of the hob and the cutter holder has been used for a long time under high frequency, heavy load, shock and vibration conditions. In order to improve the service life of these parts, generally It improves the deformation and fatigue life of the material under high frequency, heavy load, impact and vibration by improving its surface hardness.

The material of the hob's cutter shaft, end cover, bracket or block and other parts are all heat-treated to achieve ideal hardness and toughness, and all are replaceable wearing parts, which can meet engineering needs. However, the hob tool holder is generally connected to the cutter head by welding, and is a non-replaceable part. The selection of hob cutter box material should consider not only the welding performance of the material, but also the heat treatment performance of the material. The weldability and heat treatability of materials are a pair of contradictions. Materials with good weldability have poor hardenability. Materials with good hardenability have poor weldability, and a single material cannot meet the requirements of the tool holder.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a TBM composite material hob cutter box, which is made of materials with good hardenability and weldability, and at the same time enhances its weldability and hardness, and improves the The reliability of the hob connection.

In order to achieve the above purpose, the technical solution of the utility model is: a TBM composite material hob cutter box, including a knife seat, an upper connecting piece and a lower connecting piece are respectively arranged on the upper and lower sides of the knife seat, and a strengthening support is provided between the lower connecting pieces plate; the lower connecting piece and the knife seat are connected by fixing bolts.

The upper connecting piece and the lower connecting piece are made of materials with good weldability, and the upper connecting piece and the lower connecting piece are provided with triangular welding seams.

The knife seat is made of a material with good hardenability, and the inner surface of the knife seat is subjected to high-frequency quenching treatment.

An acute angle is formed between the upper part and the lower part of one end of the knife seat, and the upper part of one end of the knife seat is perpendicular to the lower part.

The lower connecting piece and the knife seat are provided with reserved bolt holes for connecting the hob knife holder.

The tool holder and its upper and lower connecting parts of the utility model are respectively made of materials with good hardenability and good weldability, which improves the hardness of the contact with the hob tool holder, the reliability of the connection with the cutter head, and increases the stability of the entire knife box. The ability of anti-shock and anti-vibration improves its service life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the structure of the utility model connected with the hob and the cutter head.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 and 2, a TBM composite material hob cutter box includes a knife seat 1, an upper connecting piece 5 and a lower connecting piece 2 are respectively arranged on the upper and lower sides of the knife seat 1, and a reinforcement is provided between the lower connecting pieces 2. support plate 3. Since the whole device is U-shaped, the setting of the reinforced support plate 3 is to prevent the deformation of the knife seat 1. After the welding of the knife box is completed, the hob knife rest 7 is balanced on the knife seat 1 and the reinforced support plate 3 can be removed. .

The upper connector 5 and the lower connector 2 are connectors made of Q345D, a material with good weldability, and the joints of the tool holder 1 and the upper connector 5 and the lower connector 2 are welded on the circumference. Both the upper connecting piece 5 and the lower connecting piece 2 are provided with a weld seam 6 with a triangular cross section, and the welding seam 6 is arranged on the upper edge of the upper connecting piece 5 and the lower edge of the lower connecting piece 2 . The welding seam 6 can be conveniently connected to the cutter head 10 . The lower connecting piece 2 and the knife seat 1 are connected by fixing bolts 4, which further strengthens the reliability of the connection between the lower connecting piece 2 and the knife seat 1, and prevents the lower connecting piece 2 and the knife seat 1 from falling off due to power when the hob swings. .

The knife seat 1 is made of 42CRMo material with good hardenability. The inner surface of the knife seat 1 is subjected to high-frequency quenching treatment, which improves the quality of the knife seat 1 and the hob's shaft, end cover, bracket or block. The hardness of the contact surface improves the service life of the contact surface of the tool holder 1 under the working conditions of high frequency, heavy load, impact and vibration, so as to meet the construction needs. An acute angle is formed between the upper part and the lower part of one end of the tool holder 1 for supporting the hob tool holder 7 . The upper part of the other end of the knife seat 1 is vertical to the lower part, and is used for supporting and connecting the hob knife holder 7 . The lower connecting piece 2 and the knife holder 1 are provided with a reserved bolt hole 8 for connecting the hob holder 7, through which the block next to the hob holder 7 can be connected to facilitate adjustment of the knife holder 1 and the hob holder. Connection of knife holder 7.

After the entire knife box is welded, it is annealed to remove the welding stress, and then machined as a whole. After the entire tool holder 1 is processed, it is then welded to the cutter head 10. The material of the cutter head 10 body is the same as that of the knife box, so the weldability is very good and the welding quality can be guaranteed.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model.

Claims (5)

1. A TBM composite material hob cutter box is characterized in that it comprises a knife seat (1), the knife seat (1) is respectively provided with an upper connector (5) and a lower connector (2), and the lower connector ( 2) There is a reinforced support plate (3) between them; the lower connecting piece (2) and the knife seat (1) are connected by fixing bolts (4). 2. The TBM composite material hob cutter box according to claim 1, characterized in that, the upper connector (5) and the lower connector (2) are connectors made of materials with good weldability, and the upper Triangular welds (6) are provided on the connecting piece (5) and the lower connecting piece (2). 3. The TBM composite material hob cutter box according to claim 1, characterized in that, the knife seat (1) is made of a material with good hardenability, and the inner surface of the knife seat (1) is subjected to high Frequency quenching treatment. 4. The TBM composite material hob cutter box according to claim 1, characterized in that an acute angle is formed between the upper part and the lower part of one end of the tool seat (1), and the upper part of one end of the tool seat (1) is perpendicular to the lower part. 5. The TBM composite material hob cutter box according to claim 1, characterized in that, the lower connecting piece (2) and the cutter seat (1) are provided with a reservation for connecting the hob cutter holder (7) Bolt holes (8).