An outer telescopic cutting drum for a new type of excavator-anchor

Abstract

The utility model discloses a kind of outer telescopic cutting drum for novel excavating anchor machine, it is related to excavating anchor machine equipment technical field, including cutting mechanism, cutting mechanism side symmetry is equipped with spray assembly, cutting mechanism is composed of middle drum, side drum and cutting drum support, middle drum both sides are connected with side drum transmission by cutting drum support, inside is equipped with driving assembly;Side drum built-in telescopic device, can realize outer telescopic adjustment.The utility model expands cutting range by outer telescopic structure, improves dust removal effect in combination with spray assembly, driving assembly and telescopic device work cooperatively to improve cutting efficiency, solve the problem that traditional cutting drum telescopic is limited, dust removal is insufficient and component connection stability is poor, suitable for complex coal seam tunneling operation.

Description

Technical Field

[0001] This utility model relates to the technical field of tunneling and anchoring equipment, specifically to an external telescopic cutting roller for a new type of tunneling and anchoring machine. Background Technology

[0002] Roadheader-and-anchor (BOMA) machines are high-efficiency underground tunneling equipment in coal mines, integrating tunneling and support. Their cutting drum is a core component that directly participates in coal and rock cutting, and its performance directly affects tunneling efficiency and operational safety. Existing BOMA cutting drums have the following defects: Limited telescopic function: Traditional cutting drums are mostly fixed structures or internal telescopic designs, with a small extension range, making it difficult to adapt to the tunneling needs of roadways of different widths and lacking adjustment flexibility; Poor dust control: A large amount of dust is generated during the cutting process. The existing spraying device has an unreasonable layout, fixed nozzle angle, and limited dust suppression coverage, which affects the working environment and personnel health. Insufficient stability of cutting component connections: The fastening structure of components such as cutting teeth and rock-breaking teeth is prone to loosening due to vibration, which leads to a decrease in cutting efficiency and may even cause equipment failure. Poor coordination between drive and telescopic mechanism: The drive system and telescopic device are controlled independently, resulting in large power transmission losses, which affect the response speed and operating accuracy of the cutting drum. Therefore, an external telescopic cutting drum for a new type of tunneling and anchoring machine is proposed. Utility Model Content

[0003] In view of this, the present invention provides an external telescopic cutting drum for a new type of tunneling and anchoring machine, which aims to solve the problems of limited telescopic range, poor dust removal effect, unstable component connection and insufficient drive coordination of traditional cutting drums, so as to realize flexible adjustment of cutting range, efficient dust reduction, improved cutting efficiency and equipment reliability.

[0004] The technical solution of this utility model embodiment is implemented as follows: an external telescopic cutting roller for a new type of tunneling and anchoring machine includes a cutting mechanism. Spraying components are symmetrically installed on one side of the cutting mechanism. The cutting mechanism includes a middle roller, side rollers and a cutting roller support. The two sides of the middle roller are symmetrically connected to the side rollers through the cutting roller support. The cutting mechanism is equipped with a drive component.

[0005] Further preferred embodiment: The cutting mechanism further includes a tooth base, a pick-shaped cutting tooth, a fastening bolt, a rock-breaking tooth, and a roller support. The tooth base is arranged in a spiral pattern along the surface of the middle roller and the side roller. The pick-shaped cutting tooth is fixedly connected by inserting a spring expansion ring into the wear-resistant sleeve of the tooth base. A roller support is installed at the front end of the cutting roller bracket. The rock-breaking tooth is threadedly connected to the front of the roller support by a fastening bolt.

[0006] A further preferred embodiment: the spray assembly includes a support frame, a water channel connecting pipe, nozzles, and a plug plate. Nozzles are arranged and installed on the top front of the support frame. A water channel connecting pipe is installed inside the support frame. One end of the water channel connecting pipe is connected to the nozzle. The two sides of the support frame are symmetrically connected to the plug plate by hexagonal head screws and spring washers.

[0007] A further preferred embodiment: the drive assembly includes a cutting drum outer rotor motor, a mounting step, a drum shaft, and an adjusting pad. The cutting drum outer rotor motor is installed inside the intermediate drum. The output shaft of the cutting drum outer rotor motor has a mounting step. One end of the drum shaft is connected to one end of the side drum. Adjusting pads are installed at the bottom of the drum shaft.

[0008] A further preferred embodiment: the side roller is equipped with a telescopic device, which includes a connecting support, a telescopic hydraulic cylinder, a universal coupling, seals, and a cutting disc. The telescopic hydraulic cylinder is fixedly connected to the outer wall of the connecting support by hexagonal head screws and anti-loosening self-locking washers. The piston rod of the telescopic hydraulic cylinder is connected to the universal coupling, and the other end of the universal coupling is connected to the cutting disc. Seals are installed around the universal coupling.

[0009] A further preferred embodiment: the fastening bolt includes a shear bushing, a washer, a hex socket head cap screw, and a locking washer, wherein the hex socket head cap screw passes sequentially through the interior of the shear bushing, the washer, and the locking washer and is threadedly connected to the roller support.

[0010] Further preferred embodiments: the pick-shaped cutting teeth are arranged in a checkerboard or cross pattern, the wear-resistant sleeve of the tooth base is made of high-chromium cast iron, and the tips of the pick-shaped cutting teeth are made of tungsten carbide alloy.

[0011] This utility model has the following beneficial effects: 1. This utility model achieves external extension and retraction through the built-in telescopic device of the side roller, with a maximum extension and retraction stroke of 600mm, which can flexibly adapt to coal seam tunneling with a width of 5.4-6.0 m, without the need to replace the roller, thus reducing operating costs; 2. This utility model uses a multi-angle nozzle design in the spray assembly to cover the cutting area. Combined with a high-pressure water source, the dust concentration is reduced by more than 60%, improving the working environment. 3. The pick-shaped cutting teeth of this utility model adopt tungsten carbide tooth tips and checkerboard arrangement, and the rock-breaking teeth assist in breaking hard rock. Combined with the high power output of the drive component, the cutting efficiency is increased by 30%; the wear-resistant sleeve and shear bushing design extend the service life of the components. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a side view of the present invention. Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This utility model Figure 4 A schematic diagram of the enlarged structure of I.

[0014] Figure label: 10. Cutting mechanism; 101. Intermediate roller; 102. Side roller; 103. Tooth seat; 104. Pick-shaped cutting tooth; 105. Fastening bolt; 106. Rock breaking tooth; 107. Roller support; 108. Cutting roller bracket; 20. Spray assembly; 201. Support frame; 202. Water channel connecting pipe; 203. Nozzle; 204. Blocking plate; 30. Drive assembly; 301. Cutting drum outer rotor motor; 302. Mounting step; 303. Drum shaft; 304. Adjusting shim; 40. Telescopic device; 401. Connecting support; 402. Telescopic hydraulic cylinder; 403. Universal coupling; 404. Seal; 405. Cutting disc. Detailed Implementation

[0015] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive. Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0016] Example 1 like Figures 1-5 As shown, this utility model embodiment provides an external telescopic cutting roller for a novel roadheader, including a cutting mechanism 10, a spraying assembly 20, a drive assembly 30, and a telescopic device 40, with the specific structure as follows: The cutting mechanism 10, as the core working component, includes an intermediate roller 101, a side roller 102, a tooth seat 103, a pick-shaped cutting tooth 104, a fastening bolt 105, a rock-breaking tooth 106, a roller support 107, and a cutting roller bracket 108.

[0017] The middle drum 101 is connected to the side drum 102 on both sides through the cutting drum support 108, forming a symmetrical wide cutting structure that is suitable for tunneling in wide coal seams. The tooth base 103 is arranged in a spiral pattern along the surface of the intermediate roller 101 and the side roller 102. The pick-shaped cutting teeth 104 are fixed in the wear-resistant sleeve of the tooth base 103 by hexagonal head screws and spring washers. They are arranged in a checkerboard or cross pattern to ensure uniform cutting. The wear-resistant sleeve is made of high-chromium cast iron, and the tips of the pick-shaped cutting teeth 104 are coated with a tungsten carbide alloy layer to improve wear resistance. The front end of the cutting drum support 108 is provided with a drum support 107, which is connected to the rock-breaking teeth 106 by fastening bolts 105. The rock-breaking teeth 106 assist in breaking hard rock or coal blocks and enhance the cutting capacity.

[0018] The spray assembly 20 is symmetrically installed on one side of the cutting mechanism 10, including a support frame 201, a water channel connecting pipe 202, a nozzle 203, and a blocking plate 204.

[0019] The nozzles 203 are installed at equal intervals on the top front of the support frame 201. The nozzles 203 are tilted at an angle of 30°~45° to cover the cutting area. The support frame 201 is equipped with a water channel connecting pipe 202, one end of which is connected to the nozzle 203, and the other end is connected to an external high-pressure water source to achieve continuous spraying; The support frame 201 is secured to the blocking plate 204 on both sides by hexagonal head screws and spring washers to prevent dust from entering and blocking the internal channels.

[0020] The drive assembly 30 is installed inside the cutting mechanism 10 and includes a cutting drum outer rotor motor 301, a mounting step 302, a drum shaft 303, and an adjusting shim 304.

[0021] The intermediate roller 101 has a built-in cutting roller outer rotor motor 301 with a power of 150~200kW and an explosion-proof design. The motor drives the side roller 102 to rotate. The bottom of the roller shaft 303 is equipped with an adjustment shim 304 with a thickness of 5~10mm and made of Q345B, which is used to compensate for installation errors and ensure smooth transmission.

[0022] The telescopic device 40 is built inside the side roller 102 and includes a connecting support 401, a telescopic hydraulic cylinder 402, a universal coupling 403, a seal 404, and a cutting disc 405.

[0023] The telescopic hydraulic cylinder 402 is fixed on the outside of the connecting support 401 by internal hexagonal head screws and anti-loosening self-locking washers. The cylinder diameter is 100~150mm and the stroke is 200~300mm. The piston rod is connected to the universal coupling 403. The universal coupling 403 is rigidly connected to the cutting disc 405, which drives the side roller 102 to extend and retract axially. The universal coupling 403 is surrounded by a sealing element 404 made of nitrile rubber to prevent dust and water from entering the interior. The telescopic action is linked with the drive component 30, and the telescopic speed and cutting speed are matched by the control system. The telescopic speed is 0.1~0.3m / s, and the cutting speed is 30~50r / min.

[0024] The fastening bolt 105 consists of a shear bushing, a washer, a hex socket head cap screw, and a locking washer. The screw passes through each component in sequence and is threaded into the roller support 107. The shear bushing breaks first under overload to protect the rock-breaking teeth 106 and the roller support 107, and the locking washer prevents the bolt from loosening due to vibration.

[0025] Example 2 An external telescopic cutting drum for a new type of roadheader and anchor cutter. The middle drum 101 of the cutting mechanism 10 has a diameter of 1500 mm and a length of 1.2 m, while the two side drums 102 have a diameter of 1500 mm and an initial length of 0.8 m, and are connected by a cutting drum bracket 108. The tooth base 103 is arranged along the surface of the drum in a right-hand spiral with a pitch of 300 mm. The pick-shaped cutting teeth 104 are arranged in a checkerboard pattern, and the tungsten carbide layer at the tooth tip is 5 mm thick. The rock-breaking teeth 106 are made of hard alloy and are fixed by fastening bolts 105. The bolt shearing bushing is made of No. 45 steel.

[0026] The support frame 201 of the spray assembly 20 is 1.5m long and has 6 nozzles 203 with an orifice diameter of 2mm and an angle of 35°. The water channel connecting pipe 202 has a diameter of 20mm and is connected to an external 1.2MPa high-pressure water source.

[0027] The cutting drum outer rotor motor 301 of the drive assembly 30 has a power of 180kW, the drum shaft 303 has a diameter of 120mm, and the adjusting shim 304 has a thickness of 8mm.

[0028] The telescopic device 40 has a telescopic hydraulic cylinder 402 with a cylinder diameter of 125mm and a stroke of 600mm. The universal coupling 403 is 1m long. The seal 404 is a nitrile rubber O-ring. The cutting disc 405 is made of Q690D high-strength steel.

[0029] During operation, the outer rotor motor 301 of the cutting drum drives the intermediate drum 101 and the side drum 102 of the outer rotor motor of the cutting drum to rotate at a speed of 40 r / min. The telescopic hydraulic cylinder 402 pushes the side drum 102 to extend outward along the universal coupling 403 at a speed of 0.2 m / s to adjust the cutting width. The spray assembly 20 sprays synchronously, and the nozzle 203 covers the cutting area. The rock-breaking teeth 106 assist in breaking hard rock. The shear bushing of the fastening bolt 105 breaks under overload to protect the main structure.

[0030] Example 3 The difference from Example 2 is that: the initial length of the side roller 102 is 1m and the telescopic stroke is 200mm; the pick-shaped cutting teeth 104 are arranged in a cross pattern; the nozzle 203 of the spray assembly 20 has an angle of 45° and a high-pressure water source pressure of 1.5MPa; the power of the cutting roller outer rotor motor 301 is 200kW and the cutting speed is 35r / min.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions should be included within the protection scope of this utility model.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An external telescopic cutting roller for a novel roadheader, comprising a cutting mechanism (10), characterized in that: The cutting mechanism (10) has spray components (20) symmetrically installed on one side. The cutting mechanism (10) includes a middle roller (101), a side roller (102) and a cutting roller support (108). The two sides of the middle roller (101) are symmetrically connected to the side roller (102) through the cutting roller support (108). The cutting mechanism (10) has a drive assembly (30) installed inside.

2. The telescopic cutting roller for a novel roadheader according to claim 1, characterized in that: The cutting mechanism (10) further includes a tooth seat (103), a pick-shaped cutting tooth (104), a fastening bolt (105), a rock-breaking tooth (106), and a roller support (107). The tooth seat (103) is arranged in a spiral pattern along the surface of the middle roller (101) and the side roller (102). The pick-shaped cutting tooth (104) is fixedly connected to the wear-resistant sleeve of the tooth seat (103) by inserting a spring expansion ring. The front end of the cutting roller bracket (108) is equipped with a roller support (107). The front side of the roller support (107) is threadedly connected to the rock-breaking tooth (106) by a fastening bolt (105).

3. The telescopic cutting roller for a novel roadheader according to claim 1, characterized in that: The spray assembly (20) includes a support frame (201), a water channel connecting pipe (202), a nozzle (203), and a plug plate (204). The nozzle (203) is arranged and installed on the top front of the support frame (201). The water channel connecting pipe (202) is installed inside the support frame (201). One end of the water channel connecting pipe (202) is connected to the nozzle (203). The plug plates (204) are symmetrically connected to both sides of the support frame (201) by internal hexagonal head screws and spring washers.

4. The telescopic cutting roller for a novel roadheader according to claim 2, characterized in that: The drive assembly (30) includes a cutting drum outer rotor motor (301), a mounting step (302), a drum shaft (303), and an adjusting pad (304). The cutting drum outer rotor motor (301) is installed inside the intermediate drum (101). The output shaft of the cutting drum outer rotor motor (301) has a mounting step (302). The drum shaft (303) is connected to one end of the side drum (102). The bottom of the drum shaft (303) is equipped with an adjusting pad (304).

5. The telescopic cutting roller for a novel roadheader according to claim 1, characterized in that: The side roller (102) is equipped with a telescopic device (40). The telescopic device (40) includes a connecting support (401), a telescopic hydraulic cylinder (402), a universal coupling (403), a seal (404), and a cutting disc (405). The outer wall of the connecting support (401) is fixedly connected to the telescopic hydraulic cylinder (402) by an internal hexagonal head screw and a self-locking washer. The piston rod of the telescopic hydraulic cylinder (402) is connected to the universal coupling (403). The other end of the universal coupling (403) is connected to the cutting disc (405). Seals (404) are installed around the universal coupling (403).

6. The telescopic cutting roller for a novel roadheader according to claim 2, characterized in that: The fastening bolt (105) includes a shear bushing, a washer, an internal hexagonal head screw, and a locking washer. The internal hexagonal head screw passes through the interior of the shear bushing, the washer, and the locking washer in sequence and is threadedly connected to the roller support (107).

7. The telescopic cutting roller for a novel roadheader according to claim 6, characterized in that: The pick-shaped cutting teeth (104) are arranged in a checkerboard or cross pattern. The wear-resistant sleeve of the tooth base (103) is made of high-chromium cast iron, and the tooth tip of the pick-shaped cutting teeth (104) is made of tungsten carbide alloy layer.

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