A coal mining heading machine cutting arm with quick change heading head

Abstract

The utility model discloses a kind of cutting arms of coal winning heading machine with quick replacement heading head, belong to coal winning equipment technical field, including turntable, stand, several cutting arms and several heading heads, heading head side is fixed with mounting rod, mounting rod other end side is opened with clamping groove, stand other end is opened with first recess, first recess is connected with disc by first motor, disc bottom end is fixed with first ring through several connecting columns, first ring outer arc is fixed with second ring through several connecting rods, and several first racks are fixed to second ring outer arc;Stand other end side is fixed with several bearing plates and is equipped with several moving rods, and the other end side of bearing plate is connected with rotating rod by bearing, and rotating rod other side is fixed with first gear and second gear, and moving rod one end is fixed with clamping block, and one side is fixed with several second racks, and square slot is connected with square rod;Using the cutting arm, heading head can be quickly disassembled, to ensure quick replacement, facilitate to improve its operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to a cutting arm for a coal mining tunneling machine with a quick-change tunneling head. Background Technology

[0002] The cutting arm of a coal mining tunneling machine, as the most core and forward-facing functional actuator and power transmission component of a modern integrated mechanized tunneling machine (referred to as "tunnel boring machine"), can be systematically defined as follows: The cutting arm is the core working unit on the coal mining tunneling machine that undertakes the task of directly breaking coal and rock. Essentially, it is a heavy-duty mechanical cantilever system integrating high-strength structural support, high-power power transmission, complex spatial motion trajectory control, and efficient rock-breaking and cutting functions. Its main structure typically consists of a rigid cantilever cylinder made of high-strength steel plates welded or precision-machined from large alloy castings, forming the core skeleton. The main drive shaft (or housing a hydraulic motor drive system) that transmits enormous torque is arranged throughout this cylinder, and the front end... The cutting head (with densely packed carbide-embedded pick-shaped cutting teeth) that directly performs coal and rock breaking tasks is rigidly connected via a large flange or spline. The rear end is reliably connected to the main frame of the tunneling machine through a heavy-duty slewing bearing (or hinged support) to achieve multiple degrees of freedom (usually at least two basic degrees of freedom: vertical lifting and horizontal swing). In terms of power, the cutting arm is driven by a built-in gearbox (for motor-driven type) or directly by a high-pressure, high-flow hydraulic system (for hydraulic motor-driven type). The power generated by the prime mover (high-power electric motor or hydraulic pump station) of the tunneling machine body is efficiently transmitted to the cutting head after multi-stage reduction and torque amplification, driving it to rotate at a high speed of tens to hundreds of revolutions per minute.

[0003] Currently, the tunneling head is generally connected to the cutting arm using high-strength bolts or hydraulic clamping devices. This connection method takes a long time to operate and can easily affect the user's operation. Therefore, there is an urgent need to design a coal mining tunneling machine cutting arm that can quickly replace the tunneling head to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mining tunneling machine cutting arm with a quick-change tunneling head, so as to solve the problem that the existing coal mining tunneling machine cutting arm is connected to the cutting arm by high-strength bolts or hydraulic clamping devices, which has a long operation time and affects the user's use.

[0005] To solve the above-mentioned technical problems, this utility model provides a cutting arm for a coal mining tunneling machine with a quick-change cutting head, including a turntable. Several cutting arms are fixed to one edge of the turntable, and a column is fixed to the center of one side of the turntable. A cutting head is provided at the other end of the cutting arm. An installation rod is fixed to the side of the cutting head. The installation rod is slidably connected to the cutting arm, and a slot is opened on the other side of the rod. A first groove is opened at the other end of the column. A first motor is installed in the first groove, and its output end is connected to a disc. A first ring is fixed to the bottom edge of the disc through several connecting columns. A second ring is fixed to the outer arc of the first ring through several connecting rods. Several first racks are fixed to the outer arc of the second ring.

[0006] Several bearing plates are fixed to the other side of the column and several moving rods are provided. A bearing is fixed to the other side of the bearing plate, and a rotating rod is connected to the bearing. A first gear and a second gear that meshes with several first racks are fixed to the other side of the rotating rod. A locking block located in the slot is fixed to one end of the moving rod, and a square groove is opened at the other end. Several second racks that mesh with the first gear are fixed to the side of the moving rod near the first gear. A square rod is slidably connected in the square groove, and the other end of the square rod is fixed to the side of the column.

[0007] As a further improvement to the above technical solution:

[0008] Optionally, the number of movable rods and the number of mounting rods are the same and correspond one-to-one.

[0009] Optionally, the cutting arm of the coal mining tunneling machine with quick-change tunneling head also includes a mounting cover, in which a second motor is installed, the output end of which passes through the mounting cover and is connected to the center of the other side of the turntable.

[0010] Optionally, two mounting blocks are also fixed on the side of the mounting cover, and the mounting blocks have mounting holes on their sides.

[0011] Optionally, a guide rod is installed on the side of the tunneling head, and the guide rod is slidably connected to the cutting arm.

[0012] Optionally, the card block is adapted to the card slot.

[0013] In a coal mining tunneling machine cutting arm with a quick-change cutting head provided by this utility model, several cutting arms are fixed to one edge of the turntable, and a column is fixed to the center of one side of the turntable. A cutting head is provided at the other end of each cutting arm. An installation rod is fixed to the side of the cutting head. The installation rod is slidably connected to the cutting arm, and a slot is opened on the side of its other end. A first groove is opened at the other end of the column. A first motor is installed in the first groove, and its output end is connected to a disc. A first ring is fixed to the bottom edge of the disc by several connecting columns. A second ring is fixed to the outer arc of the first ring by several connecting rods. Several first racks are fixed to the outer arc of the second ring. Several bearing plates are fixed to the other side of the column, and several moving rods are provided. A bearing is fixed to the other side of the bearing plate, and a rotating rod is connected to the bearing. A first gear and a second gear meshing with several first racks are fixed to the other side of the rotating rod. A locking block located in the slot is fixed to one end of the moving rod, and a square groove is opened at the other end. Several second racks meshing with the first gear are fixed to the side of the moving rod near the first gear. A square rod is slidably connected in the square groove, and the other end of the square rod is fixed to the side of the column. Using this cutting arm, the tunneling head can be quickly disassembled and assembled to ensure rapid replacement, which is beneficial to improving its operating efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cutting arm structure of a coal mining tunneling machine with a quick-change tunneling head provided by this utility model;

[0015] Figure 2 This is a left view of the cutting arm of a coal mining tunneling machine with a quick-change tunneling head provided by this utility model;

[0016] Figure 3 yes Figure 2 Sectional view of AA. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] This utility model provides a cutting arm for a coal mining tunneling machine with a quick-change tunneling head, the structure of which is as follows: Figures 1-3 As shown, the device includes a turntable 1. Several cutting arms 2 are fixed to one edge of the turntable 1, and a column 6 is fixed to the center of one side of the turntable 1. A tunneling head 3 is provided at the other end of the cutting arm 2. An installation rod 4 is fixed to the side of the tunneling head 3. The installation rod 4 is slidably connected to the cutting arm 2, and a slot 5 is opened on the side of its other end. A first groove 7 is opened at the other end of the column 6. A first motor 8 is installed in the first groove 7, and its output end is connected to a disc 9. A first ring 10 is fixed to the bottom edge of the disc 9 by several connecting columns 10. A second ring 13 is fixed to the outer arc of the first ring 10 by several connecting rods 12. Several first rings 13 are fixed to the outer arc of the second ring 13 by several connecting rods 12. A rack 18; several bearing plates 19 are fixed to the other side of the column 6 and several moving rods 14 are provided. A bearing 20 is fixed to the other side of the bearing plate 19, and a rotating rod 21 is connected to the bearing 20. A first gear 22 and a second gear 23 that meshes with several first racks 18 are fixed to the other side of the rotating rod 21. A locking block 16 located in the locking groove 5 is fixed to one end of the moving rod 14, and a square groove 15 is opened at the other end. Several second racks 24 that mesh with the first gear 22 are fixed to the side of the moving rod 14. A square rod 17 is slidably connected in the square groove 15, and the other end of the square rod 17 is fixed to the side of the column 6. Using a coal mining tunneling machine cutting arm with a quick-change tunneling head, several tunneling heads 3 can be quickly disassembled and assembled to ensure quick replacement, which is beneficial to improving its operating efficiency.

[0021] Furthermore, the number of movable rods and mounting rods 4 are the same and correspond one-to-one.

[0022] Furthermore, the cutting arm of the coal mining tunneling machine with quick-change tunneling head also includes a mounting cover 25, in which a second motor 26 is installed, the output end of which passes through the mounting cover 25 and is connected to the center of the other side of the turntable 1.

[0023] Furthermore, two mounting blocks 27 are fixed on the side of the mounting cover 25, and mounting holes 28 are opened on the side of the mounting blocks 27.

[0024] Furthermore, a guide rod 29 is installed on the side of the tunneling head 3, and the guide rod 29 is slidably connected to the cutting arm 2.

[0025] Furthermore, the card block 16 is compatible with the card slot 5.

[0026] Operating procedures

[0027] When replacing the tunneling head, the first motor 8 is started to drive the disc 9 to rotate, which in turn drives the connecting column 10, the first ring 11, and the connecting rod 12 to move, forcing the first rack 18 on the second ring 13 to move synchronously in a circular motion; the first rack 18 drives the second gear 23 to rotate, which in turn drives the first gear 22 to rotate through the rotating rod 21; the first gear 22 meshes with the second rack 24 on the moving rod 14, pushing all the moving rods 14 to slide radially outward along the square rod 17, so that the locking block 16 completely exits from the slot 5 of the installation rod 4 of the tunneling head 3; at this time, the second motor 26 is started, driving the turntable 1 and the cutting arm 2 to rotate to the maintenance position, and the old tunneling head 3 is pulled out of the slide groove of the cutting arm 2 along with the installation rod 4; after the new tunneling head 3 is inserted, the first motor 8 rotates in reverse, and the moving rod 14 moves inward through the rack-gear reverse transmission, and the locking block 16 is re-wedged into the slot 5 to complete the mechanical locking; the guide rod 29 restrains the axial swing of the tunneling head 3 throughout the entire process.

[0028] Beneficial effects

[0029] This invention fundamentally solves the safety and efficiency problems of replacing the underground tunneling head. Through the linkage mechanism driven by the first motor 8, all the locking blocks 16 are simultaneously disengaged from the locking slot 5. Unlocking can be completed without personnel contacting the cutting arm, completely avoiding high-risk operations in narrow spaces.

[0030] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A quick-changeable heading head for a coal heading machine cutting arm, comprising a turntable (1), characterized in that, The turntable (1) has several cutting arms (2) fixed on one side edge and a column (6) fixed at one side center. The cutting arm (2) has a tunneling head (3) at the other end. The tunneling head (3) has an installation rod (4) fixed on the side. The installation rod (4) is slidably connected to the cutting arm (2) and has a slot (5) on the other side. The column (6) has a first groove (7) at the other end. A first motor (8) is installed in the first groove (7). Its output end is connected to a disc (9). The bottom edge of the disc (9) is fixed with a first ring (11) by several connecting columns (10). The outer arc of the first ring (11) is fixed with a second ring (13) by several connecting rods (12). The outer arc of the second ring (13) is fixed with several first racks (18). Several bearing plates (19) are fixed to the other side of the column (6) and several moving rods (14) are provided. A bearing (20) is fixed to the other side of the bearing plate (19). A rotating rod (21) is connected to the bearing (20). A first gear (22) and a second gear (23) meshing with several first racks (18) are fixed to the other side of the rotating rod (21). A locking block (16) located in the slot (5) is fixed to one end of the moving rod (14) and a square slot (15) is opened at the other end. Several second racks (24) meshing with the first gear (22) are fixed to the side of the moving rod (14). A square rod (17) is slidably connected in the square slot (15). The other end of the square rod (17) is fixed to the side of the column (6).

2. A quick-change heading head for a coal mining heading machine cutting arm as claimed in claim 1, characterised in that, The number of movable rods and the number of mounting rods (4) are the same and they correspond one-to-one.

3. A quick-change heading head for a coal mining heading machine cutting arm as claimed in claim 1, characterised in that, The cutting arm of the coal mining tunneling machine with quick-change tunneling head also includes a mounting cover (25), in which a second motor (26) is installed, the output end of which passes through the mounting cover (25) and is connected to the center of the other side of the turntable (1).

4. A quick-change heading head for a coal mining heading machine cutting arm as claimed in claim 3 wherein, The mounting cover (25) also has two mounting blocks (27) fixed on its side, which are positioned opposite each other. The mounting blocks (27) have mounting holes (28) on their sides.

5. A quick-change heading head for a coal mining heading machine cutting arm as claimed in claim 1, characterised in that, The tunneling head (3) is equipped with a guide rod (29) on its side, and the guide rod (29) is slidably connected to the cutting arm (2).

6. A quick-change heading head for a coal mining heading machine cutting arm as claimed in claim 1, characterised in that, The card block (16) is adapted to the card slot (5).

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