Connecting structure for wear-resisting plate of shovel plate raking claw of heading machine

Abstract

The utility model relates to the technical field of heading machines, in particular to a connecting structure for a wear-resisting plate of a heading machine shovel plate and a raking claw, which comprises a heading machine shovel plate, the raking claw and the wear-resisting plate, the raking claw is fixedly arranged at the front end of the heading machine shovel plate through a bolt, and the wear-resisting plate is movably connected to the inner side of the end part of the raking claw. The front end of each raking claw is provided with a wear-resisting plate fixing structure convenient to disassemble and assemble, and the two sides of each raking claw are provided with raking claw reinforcing and connecting structures. According to the connecting structure for the wear-resisting plate of the shovel plate raking claw of the heading machine, the wear-resisting plate is designed to be of an inverted-U-shaped structure, one side of the wear-resisting plate can be inserted into an inserting groove to be spliced and matched, after the wear-resisting plate is inserted, a mounting screw can be driven into a lifted screw hole, and then the wear-resisting plate can be fixed through the mounting screw; by means of the inserting and abutting mounting mode, dismounting and mounting are more convenient, time is saved, and the working efficiency of the heading machine is improved through the connecting structure for the wear-resisting plate of the shovel plate raking claw of the heading machine.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machines, in particular to a connection structure for wear-resistant plates of a shovel plate and rake claw of a tunnel boring machine. Background Art

[0002] Because the claws on the roadheader's blade constantly come into contact with coal and other materials during operation, the primary contact surfaces of the claw tips are subject to significant wear. Currently, manufacturers employ two main methods to increase the wear resistance of claws: the optimal method is to use bolts and nuts to connect the wear plate to the claws.

[0003] For example, the authorization announcement number "CN204200235U" is named as a connection structure for the wear-resistant plate of a tunnel boring machine shovel plate and rake claw. After connection, the end face of the screw is flush with the wear-resistant plate, and the screw will fall off only when the wear-resistant plate is almost completely worn, which greatly improves the service life of the rake claw and the continuity of the operation of the tunnel boring machine loading mechanism. However, the existing connection structure of the wear-resistant plate of the tunnel boring machine shovel plate and rake claw adopts an embedded screw combined with a welding fixed installation method to achieve the fixation of the rake claw wear-resistant plate. However, every time the tunnel boring machine shovel plate is working, the front end wear-resistant plate is in contact with the soil and rock layers and the wear is most severe. Therefore, each time the tunnel boring machine completes work, the wear-resistant plate basically needs to be replaced with a new one before it can continue to work. Therefore, the tunnel boring machine startup process requires multiple wear-resistant plate replacement processes. Therefore, each disassembly time after welding the embedded screws is relatively troublesome, and in order to ensure that the installation position of the wear-resistant plate is accurate enough, it is also necessary to measure and then install and replace it, which greatly affects the working speed of the tunnel boring machine, so that the connection structure of the wear-resistant plate of the tunnel boring machine shovel plate and rake claw affects the working efficiency of the tunnel boring machine. Utility Model Content

[0004] The utility model aims to solve the problem of low working efficiency of the existing connection structure of the wear-resistant plate of the shovel plate and rake claw of the tunnel boring machine, and proposes a connection structure for the wear-resistant plate of the shovel plate and rake claw of the tunnel boring machine.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A connection structure for the wear-resistant plate of a tunnel boring machine shovel plate and rake claw is designed, which includes a tunnel boring machine shovel plate, a rake claw and a wear-resistant plate. The rake claw is fixedly installed on the front end of the tunnel boring machine shovel plate by bolts, and the wear-resistant plate is movably connected to the inner side of the end of the rake claw. The front end of the rake claw is provided with a wear-resistant plate to facilitate the disassembly and installation of the fixing structure, and rake claw reinforcement connection structures are provided on both sides of the rake claw.

[0007] Preferably, the wear-resistant plate is easy to disassemble and install, and the fixing structure includes a screw hole and a plug-in slot. The plug-in slot is fixedly opened inside the rake claw, and the inner top end of the plug-in slot is movably connected to a tightening plate. The two screw holes are fixedly opened above the outer wall of the rake claw, and the inner sides of the two screw holes are rotatably connected to mounting screws. The top ends of the two mounting screws are fixedly connected to a twisting head, and a reinforcement layer is fixedly installed on the front end of the outer wall of the wear-resistant plate.

[0008] Preferably, the inner side of the insertion groove is movably connected to one end of the wear-resistant plate, the side wall of the clamping plate is movably connected to the outer wall of the wear-resistant plate, and the inner wall of the wear-resistant plate is slidably connected to the front end of the outer wall of the rake claw.

[0009] Preferably, the rake claw reinforcement connection structure includes a first connecting beam and a second connecting beam, the two second connecting beams are fixedly installed on both sides of the outer wall of the tunnel boring machine shovel plate, the two first connecting beams are fixedly installed on both sides of the outer wall of the rake claw, the lower ends of the two first connecting beams are fixedly connected to connecting columns, the other ends of the two connecting columns are fixedly connected to the top of the second connecting beam, and the outer walls of the two first connecting beams and the second connecting beams are fixedly connected to multiple reinforcement blocks.

[0010] Preferably, the inner sides of the plurality of reinforcement blocks are fixedly connected to the side walls of the rake claw.

[0011] The utility model proposes a connection structure for the wear-resistant plate of the shovel and rake claw of a tunnel boring machine, which has the beneficial effect that: the wear-resistant plate is designed as an inverted U-shaped structure, and one side of the wear-resistant plate can be inserted into the inside of the plug-in groove for splicing and matching. After the wear-resistant plate is plugged in, the installation screws can be driven into the screw holes opened by lifting, and then the installation screws can fix the wear-resistant plate. The disassembly and installation method of plug-in and tight installation is more convenient and time-saving, so that the connection structure for the wear-resistant plate of the shovel and rake claw of the tunnel boring machine improves the working efficiency of the tunnel boring machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0013] Figure 2 for Figure 1 A front cross-sectional schematic diagram of ;

[0014] Figure 3 for Figure 1 A schematic diagram of a right side view of FIG.

[0015] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0016] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0017] Figure 6 for Figure 3 Enlarged cross-sectional view of part C in the middle.

[0018] In the figure: 1. Tunnel boring machine shovel plate, 2. Rake claw, 3. Wear-resistant plate, 4. Wear-resistant plate is convenient for disassembly and installation of fixed structure, 41. Screw hole, 42. Twist head, 43. Mounting screw, 44. Plug slot, 45. Clamping plate, 46. Reinforcement layer, 5. Rake claw reinforcement connection structure, 51. First connecting beam, 52. Second connecting beam, 53. Connecting column, 54. Reinforcement block. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Example 1:

[0021] See also Figure 1-6 In this embodiment, a connection structure for the wear-resistant plate of a tunnel boring machine shovel plate and rake claw is provided, comprising a tunnel boring machine shovel plate 1, a rake claw 2 and a wear-resistant plate 3. The rake claw 2 is fixedly mounted on the front end of the tunnel boring machine shovel plate 1 by bolts, and the rear end of the tunnel boring machine shovel plate 1 is fixedly mounted on the tunnel boring machine's excavation head by multiple bolts. The wear-resistant plate 3 is movably connected to the inner side of the end of the rake claw 2. The rake claw 2 extends at the front end of the tunnel boring machine shovel plate 1 for contacting the soil and rock layers to realize the excavation function. A wear-resistant plate is provided at the front end of the rake claw 2 for facilitating the disassembly and installation of a fixing structure 4, and a rake claw reinforcement connection structure 5 is provided on both sides of the rake claw 2.

[0022] The wear-resistant plate is easy to disassemble and install. The fixing structure 4 includes a screw hole 41 and a plug-in slot 44. The plug-in slot 44 is fixedly opened inside the rake claw 2. The size and diameter of the plug-in slot 44 are consistent with the rear end part of the wear-resistant plate 3. The wear-resistant plate 3 is made of high-strength carbon steel material. The wear-resistant plate 3 is designed as an inverted U-shaped structure. One side of the wear-resistant plate 3 can be inserted into the plug-in slot 44 for splicing and matching. The inner top end of the plug-in slot 44 is movably connected with a clamping plate 45. The clamping plate 45 is made of aluminum alloy plate. The clamping plate 45 can be knocked into the gap between the wear-resistant plate 3 and the plug-in slot 44. In this way, the clamping plate 45 uses outward tension to strengthen the force of the wear-resistant plate 3 against the plug-in slot 44, thereby achieving a more secure installation.

[0023] Two screw holes 41 are fixedly opened above the outer wall of the rake claw 2. When the wear-resistant plate 3 is inserted, the mounting screws 43 can be driven into the opened screw holes 41, and then the mounting screws 43 can fix the wear-resistant plate 3. The inner sides of the two screw holes 41 are rotatably connected with the mounting screws 43, and the top ends of the two mounting screws 43 are fixedly connected with the twisting heads 42. The front end of the outer wall of the wear-resistant plate 3 is fixedly installed with a reinforcement layer 46. The reinforcement layer 46 is made of a nickel-containing alloy plated on the outermost side of the wear-resistant plate 3. The hardness and rigidity of the reinforcement layer 46 are relatively good, which can also increase the service life of the wear-resistant plate 3 when the tunnel boring machine is excavating.

[0024] The inner side of the plug-in groove 44 is movably connected to one end of the wear-resistant plate 3, the side wall of the abutting plate 45 is movably connected to the outer wall of the wear-resistant plate 3, and the inner wall of the wear-resistant plate 3 is slidably connected to the front end of the outer wall of the rake claw 2;

[0025] The size diameter of the plug-in slot 44 is consistent with the rear end part of the wear-resistant plate 3. The wear-resistant plate 3 is made of high-strength carbon steel material. The wear-resistant plate 3 is designed as an inverted U-shaped structure. One side of the wear-resistant plate 3 can be inserted into the plug-in slot 44 for splicing and matching. After the wear-resistant plate 3 is plugged in, the installation screw 43 can be driven into the screw hole 41 that has been opened. Then the installation screw 43 can fix the wear-resistant plate 3. The reinforcement layer 46 is made of nickel-containing alloy plated on the outermost side of the wear-resistant plate 3. The hardness and rigidity of the reinforcement layer 46 are relatively good, which can also increase the service life of the wear-resistant plate 3 when the tunnel boring machine is excavating. The installation method of plugging and tightening is more convenient to disassemble and install and saves time, so that the wear-resistant plate connection structure of the tunnel boring machine shovel and rake claw improves the working efficiency of the tunnel boring machine.

[0026] The rake claw reinforcement connection structure 5 includes a first connecting beam 51 and a second connecting beam 52. The two second connecting beams 52 are fixedly installed on both sides of the outer wall of the tunnel boring machine shovel 1. The first connecting beam 51 is welded to both sides of the rake claw 2, and the second connecting beam 52 is welded to the outside of the tunnel boring machine shovel 1. The first connecting beam 51 and the second connecting beam 52 are fixed by welding through the connecting column 53. The first connecting beam 51 can straighten the position of the rake claw 2 on both sides and reduce the stress deformation of the climbing claw 2 to both sides.

[0027] The two first connecting beams 51 are fixedly installed on both sides of the outer wall of the rake claw 2. The lower ends of the two first connecting beams 51 are fixedly connected to the connecting columns 53. The other ends of the two connecting columns 53 are fixedly connected to the top of the second connecting beam 52. The outer walls of the two first connecting beams 51 and the second connecting beams 52 are fixedly connected with multiple reinforcing blocks 54. The reinforcing blocks 54 are made of multiple metal iron rings that are sleeved on the outside of the first connecting beams 51 and the second connecting beams 52 to improve the firmness and strength of the first connecting beams 51 and the second connecting beams 52. The inner sides of the multiple reinforcing blocks 54 are fixedly connected to the side walls of the rake claw 2.

[0028] Working principle:

[0029] When the wear-resistant plate connection structure of the roadheader shovel claw is used, the climbing claw 2 is installed at the front end of the roadheader shovel, and then when the roadheader starts and drives the shovel to rotate, it can cut and excavate the rock layer;

[0030] The rake claw 2 is fixedly mounted on the front end of the tunnel boring machine shovel 1 by bolts, and the rear end of the tunnel boring machine shovel 1 is fixed to the tunnel boring machine's excavation head by multiple bolts. The rake claw 2 extends from the front end of the tunnel boring machine shovel 1 to contact the soil and rock layers to achieve the excavation function;

[0031] The size diameter of the plug-in slot 44 is consistent with the rear end portion of the wear-resistant plate 3. The wear-resistant plate 3 is made of high-strength carbon steel material. The wear-resistant plate 3 is designed as an inverted U-shaped structure. One side of the wear-resistant plate 3 can be inserted into the plug-in slot 44 for splicing and matching. After the wear-resistant plate 3 is plugged in, the mounting screw 43 can be driven into the screw hole 41 opened by lifting. Then, the mounting screw 43 can fix the wear-resistant plate 3. The reinforcement layer 46 is made of a nickel-containing alloy plated on the outermost side of the wear-resistant plate 3. The hardness and rigidity of the reinforcement layer 46 are relatively good, which can also increase the service life of the wear-resistant plate 3 during excavation by the roadheader. The disassembly and installation method of plug-in and tight installation is more convenient and saves time.

[0032] The first connecting beam 51 is welded on both sides of the rake claw 2, and the second connecting beam 52 is welded on the outside of the tunnel boring machine shovel 1. The first connecting beam 51 and the second connecting beam 52 are fixed by welding through the connecting column 53. The first connecting beam 51 can straighten the position of the rake claw 2 on both sides and reduce the stress deformation of the climbing claw 2 to both sides. The outer walls of the two first connecting beams 51 and the second connecting beams 52 are fixedly connected with multiple reinforcement blocks 54. The reinforcement blocks 54 use multiple metal iron rings that are sleeved on the outside of the first connecting beam 51 and the second connecting beam 52 to improve the firmness and strength of the first connecting beam 51 and the second connecting beam 52.

[0033] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A connecting structure for a wear plate of a roadheader shovel and a rake claw, comprising a roadheader shovel (1), a rake claw (2) and a wear plate (3), wherein the rake claw (2) is fixedly mounted on the front end of the roadheader shovel (1) by bolts, and the wear plate (3) is movably connected to the inner side of the end of the rake claw (2), characterized in that: The front end of the rake claw (2) is provided with a wear-resistant plate for facilitating the disassembly and installation of a fixing structure (4), and both sides of the rake claw (2) are provided with a rake claw reinforcement connection structure (5). The wear-resistant plate for facilitating the disassembly and installation of a fixing structure (4) includes a screw hole (41) and a plug-in slot (44), the plug-in slot (44) is fixedly opened inside the rake claw (2), and the inner top end of the plug-in slot (44) is movably connected to a tightening plate (45), two of the screw holes (41) are fixedly opened above the outer wall of the rake claw (2), the inner sides of the two screw holes (41) are rotatably connected to mounting screws (43), and the top ends of the two mounting screws (43) are fixedly connected to a twisting head (42), and the outer front end of the wear-resistant plate (3) is fixedly installed with a reinforcement layer (46).

2. The connection structure for the wear-resistant plate of the roadheader blade and rake claw according to claim 1 is characterized in that: The inner side of the insertion groove (44) is movably connected to one end of the wear-resistant plate (3), the side wall of the abutting plate (45) is movably connected to the outer wall of the wear-resistant plate (3), and the inner wall of the wear-resistant plate (3) is slidably connected to the front end of the outer wall of the rake claw (2).

3. The connection structure for the wear-resistant plate of the roadheader blade and rake claw according to claim 2, characterized in that: The rake claw reinforcement connection structure (5) comprises a first connection beam (51) and a second connection beam (52), wherein the two second connection beams (52) are fixedly mounted on both sides of the outer wall of the excavator shovel plate (1), and the two first connection beams (51) are fixedly mounted on both sides of the outer wall of the rake claw (2), the lower ends of the two first connection beams (51) are fixedly connected to connection columns (53), the other ends of the two connection columns (53) are fixedly connected to the top ends of the second connection beams (52), and the outer walls of the two first connection beams (51) and the second connection beams (52) are fixedly connected to a plurality of reinforcement blocks (54).

4. The connection structure for the wear-resistant plate of the roadheader blade and rake claw according to claim 3 is characterized in that: The inner sides of the plurality of reinforcement blocks (54) are fixedly connected to the side walls of the rake claw (2).

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