A roller cutter holder for microwave-assisted rock breaking

Abstract

The application discloses a kind of microwave auxiliary hob rock breaking's hob, belong to tunneling equipment technical field.The seat includes seat body, microwave probe, rotating sleeve, driving device and cover plate, hob is installed inside seat body, microwave probe is set in seat body and corresponding end face is provided with through hole, rotating sleeve one end is connected with microwave probe, the other end is rotatably connected with seat body inner wall, driving device is used to drive rotating sleeve microwave probe moves in first direction and makes it can extend through hole, simultaneously driving cover plate moves in second direction to open or close through hole.The application realizes the extension and contraction of two microwave probes and the opening and closing of through hole synchronously by a set of driving device, compact structure, reliable action, effectively protect microwave probe, improve the operation safety and efficiency of microwave assisted rock breaking.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring equipment technology, specifically to a cutter holder for microwave-assisted rock breaking. Background Technology

[0002] In hard rock tunnel excavation, relying solely on mechanical cutterheads for rock breaking suffers from problems such as rapid cutter wear, low rock breaking efficiency, and high power requirements. Microwave-assisted rock breaking technology utilizes microwaves to selectively heat the rock, inducing thermal stress cracks within the rock, thereby reducing its strength and assisting mechanical cutterheads in rock breaking. This can significantly improve excavation efficiency and extend cutter life. In existing technologies, microwave-assisted rock breaking devices are often independently mounted on the cutterhead and are fixed in place. This fixed installation structure makes the probe susceptible to impact from rock debris and erosion from mud and water. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this application provides a microwave-assisted roller cutter holder for rock breaking, comprising: The tool holder body has a hob inside; A microwave probe is disposed inside the tool holder body, and a through hole is formed on the end face of the tool holder body at the corresponding position. A rotating sleeve is connected at one end to the microwave probe and at the other end to the inner wall of the tool holder body. A driving device is used to drive the rotating sleeve to rotate so that the microwave probe follows the rotating sleeve to move in a first direction and can extend out of the through hole; A cover plate is embedded inside the tool holder body and is driven by the driving device to move along the second direction and can close the through hole; When the driving device drives the microwave probe to extend out of the through hole, it simultaneously moves the cover plate to open the through hole. When the driving device drives the microwave probe to move into the tool holder body, it simultaneously moves the cover plate to close the through hole.

[0004] Furthermore, the tool holder body includes: The hob mounting plate includes two sets arranged opposite to each other, and the hobs are connected to the hob mounting plate; The side plates include two sets arranged opposite to each other, and are respectively connected to both sides of the two sets of hob mounting plates; Each of the side plates is provided with two sets of microwave probes, and the rotating sleeve, the driving device and the cover plate are all provided in the side plate.

[0005] Furthermore, one end of the rotating sleeve is open, and a spiral groove is formed on its side wall. One end of the microwave probe is provided with a base, which is movably disposed inside the rotating sleeve. A limiting shaft is provided on the base, and the limiting shaft is movably disposed inside the spiral groove.

[0006] Furthermore, the driving device includes: Drive motor; The drive shaft is connected to the output end of the drive motor via a belt; A first transmission gear is connected to one end of the transmission shaft, and a driven gear is provided on the rotating sleeve, which meshes with the first transmission gear; A second transmission gear is connected to the other end of the transmission shaft, and a rack is provided on the cover plate, which meshes with the second transmission gear.

[0007] Furthermore, the cover plate includes: A blocking part is used to move to the position of the through hole and close it; A guide portion is provided, wherein a guide groove is formed in the side plate, and the guide portion is movably disposed within the guide groove; A connecting part is provided along the length direction of the cover plate, and the rack is provided on the connecting part.

[0008] Furthermore, the output end of the drive motor is connected to two drive shafts via the belt, wherein two rotating sleeves are provided between the two first drive gears, and the racks on the two cover plates are arranged opposite each other.

[0009] Furthermore, the first direction is perpendicular to the end face of the tool holder body, and the second direction is perpendicular to the first direction.

[0010] Furthermore, it also includes: A cutter shaft has its two ends connected to the hob mounting plate, and the hob is connected to the cutter shaft; A clamping block is connected to the hob mounting plate, and both ends of the cutter shaft are connected to the clamping block to prevent rotation. A locking device is used to fix the cutter shaft.

[0011] Furthermore, the clamping block is a C-shaped clamping block, and connecting blocks are respectively provided at both ends of the cutter shaft. The connecting blocks have an arc-shaped part and an anti-rotation part that cooperate with the C-shaped clamping block.

[0012] Furthermore, the locking device includes: The wedge block, the connecting block also having a locking part, the wedge block abutting against the locking part; A locking bolt, one end of which is connected to the wedge block, and the other end of which extends out of the cutter mounting plate; The fixing block is connected to the hob mounting plate and forms a threaded connection with the locking bolt.

[0013] The advantages of this application are as follows: The provided roller cutter holder integrates the microwave probe, rotating sleeve, driving device, and cover plate into the cutter holder body. The rotating sleeve is driven by the same driving device to rotate, causing the microwave probe to move along the first direction to extend or retract through the through hole. At the same time, it drives the cover plate to move along the second direction to open and close the through hole. That is, one drive and two actions are achieved simultaneously to complete the switching of probe extension and orifice protection. The structure is simple and compact, with high reliability. It can be used at any time to protect and isolate the microwave probe during working and non-working periods. It significantly improves the impact resistance and contamination resistance of the microwave probe and is suitable for microwave-assisted rock breaking operations in hard rock under harsh working conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a cutter holder for microwave-assisted rock breaking according to this application; Figure 2 for Figure 1 Schematic diagram of the structure with side panels removed; Figure 3 for Figure 2 Schematic diagram showing the connection between the rotating sleeve, base, and microwave probe; Figure 4 for Figure 3 Diagram showing the connection between the medium microwave probe and the base; Figure 5 for Figure 3 Schematic diagram of the connecting sleeve structure; Figure 6 for Figure 5 Another perspective structural diagram; Figure 7 for Figure 2 Schematic diagram of the connection between the drive shaft and the cover plate; Figure 8 for Figure 7 Schematic diagram of the middle cover plate structure; Figure 9 for Figure 1 Sectional view of the middle side plate; Figure 10 for Figure 1 Diagram showing the connection between the intermediate hob and the hob mounting plate; Figure 11 A schematic diagram showing the connection of the hob mounting plate, C-shaped clamp, and locking device; Figure 12 for Figure 10 Schematic diagram of the middle cutter shaft structure; Figure 13 for Figure 11 Schematic diagram of the locking device.

[0015] The following are labeled in the diagram: 10. Tool holder body; 11. Hob mounting plate; 12. Side plate; 121. Through hole; 122. First mounting chamber; 123. Second mounting chamber; 124. Third mounting chamber; 125. Fourth mounting chamber; 126. Guide groove; 13. Hob; 14. Microwave probe; 15. Rotating sleeve; 151. Helical groove; 152. Rotating hole; 153. Driven gear; 16. Base; 161. Limiting shaft; 17. Drive device; 171. Drive motor, 172, belt, 173, drive shaft, 174, first drive gear, 175, second drive gear, 18, positioning shaft, 19, cover plate, 191, shielding part, 192, guide part, 193, connecting part, 194, rack, 20, cutter shaft, 21, connecting block, 211, arc-shaped part, 212, anti-rotation part, 213, locking part, 22, C-shaped clamping block, 23, locking device, 231, wedge block, 232, locking bolt, 233, fixing block. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0017] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0018] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0019] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] See Figure 1 This embodiment provides a cutter holder for microwave-assisted rock breaking, including a cutter holder body 10. The cutter holder body 10 is formed by two oppositely arranged cutter mounting plates 11 and two oppositely arranged side plates 12. A cutter 13 is arranged between the two cutter mounting plates 11, and two microwave probes 14 are respectively arranged on each side plate 12.

[0023] See Figures 2-6 To enable the extension and retraction of the microwave probe, a rotating sleeve 15 is provided inside the side plate 12. One end of the rotating sleeve 15 is open, and the microwave probe 14 is movably mounted inside the rotating sleeve 15 via the base 16. A through spiral groove 151 is provided on the side wall of the rotating sleeve 15, and a limiting shaft 161 is provided on the base 16. The limiting shaft 161 is movably mounted inside the spiral groove 151. A driving device 17 is also provided inside the side plate to drive the rotating sleeve 15 to rotate. Preferably, a rotating hole 152 is provided on the bottom wall of the rotating sleeve, and a positioning shaft 18 is provided inside the side plate. The rotating hole 152 is sleeved on the outside of the positioning shaft 18 to guide the rotation of the rotating sleeve.

[0024] Specifically, the drive device 17 includes a drive motor 171. The output end of the drive motor 171 is connected to two drive shafts 173 via a belt 172 (synchronous belt). The two drive shafts 173 are located on the outside of the two microwave probes 14. A first drive gear 174 is provided at the bottom of the drive shaft, and a driven gear 153 is provided at the bottom of the rotating sleeve 15. The driven gear 153 and the first drive gear 174 are meshed together. The drive motor drives the belt to rotate, and then the rotation of the two first drive gears drives the rotating sleeve to rotate. During the rotation of the rotating sleeve, since the positioning shaft 18 restricts its overall axial and radial displacement, the rotational motion of the sleeve is converted into the linear extension and retraction motion of the base 16 and the microwave probes 14 on it along the axial direction by the pushing action of the contour surface of the spiral groove 151 on the limiting shaft 161. At the same time, a through hole 121 is opened on the side plate 12 for the microwave probe to pass through.

[0025] See Figure 9 More specifically, the side plate 12 is provided with a first mounting chamber 122, a second mounting chamber 123 and a third mounting chamber 124 respectively. The first mounting chamber 122 is used to install the drive motor 171, the second mounting chamber 123 is used to install the drive shaft 173, and the third mounting chamber 124 is used to install the rotating sleeve 15 and the microwave probe 14. The bottom end of the drive shaft 173 extends out of the side plate and is connected to the belt 172.

[0026] See Figures 7-9 When the microwave probe is not working, in order to seal the through hole 121, a fourth mounting chamber 125 is provided in the side plate below the through hole 121. The fourth mounting chamber 125 has a certain length and is provided with a cover plate 19. The cover plate 19 specifically includes a shielding part 191, a guide part 192 and a connecting part 193. A guide groove 126 is provided inward along the side wall of the fourth mounting chamber. The guide part 192 is movably disposed in the guide groove 126. The shielding part 191 is located in the fourth mounting chamber. A second transmission gear 175 is provided at the upper end of the transmission shaft 173. A rack 194 is provided on the connecting part 193. The rack 194 and the second transmission gear 175 form a meshing connection, converting the rotation of the transmission shaft into the linear motion of the cover plate.

[0027] Since the movement of the two cover plates is also driven by the same drive motor, and the two cover plates open outwards, the racks 194 of the two cover plates 19 mesh with the outer sides of the two second transmission gears 175 in a relatively parallel manner. This allows the two cover plates 19 to move in opposite directions in a linear motion when the transmission shaft 173 rotates, thus opening or closing the cover plates. The direction of movement of the cover plates is perpendicular to the direction of movement of the microwave probe.

[0028] See Figures 10-13In this embodiment, the hob holder further optimizes the installation structure of the hob 13. The hob 13 is connected to the hob mounting plates 11 on both sides through the cutter shaft 20. The end of the cutter shaft 20 is provided with a connecting block 21. The hob mounting plate 11 is provided with a C-shaped clamping block 22. The connecting block 21 is provided with an arc-shaped part 211 and an anti-rotation part 212 that cooperate with the C-shaped clamping block. The anti-rotation part is a plane. The two are combined to realize the circumferential anti-rotation connection of the cutter shaft and prevent the hob from rotating unexpectedly.

[0029] In addition, a locking device 23 is provided to further fix the cutter shaft, specifically including a wedge 231, a locking bolt 232, and a fixing block 233. A locking part 213 is also formed on the connecting block 21. The locking part 213 is an inclined surface. The inclined surface on the wedge 231 abuts against the locking part 213 to apply axial or radial locking force to the cutter shaft 20. One end of the locking bolt 232 is connected to the wedge 231, and the other end passes through and is threaded into the fixing block 233 fixed on the hob mounting plate 11. When the locking bolt is tightened, the wedge presses against the locking part to achieve detachable rigid fixation of the cutter shaft, which facilitates the replacement and maintenance of the hob.

[0030] In the non-operating state, the four microwave probes on the two side plates are retracted, and the cover plate closes the through hole. When the microwave probes need to be extended for operation, the drive motor drives the two transmission shafts to rotate simultaneously via a belt. The first transmission gear drives the driven gear to rotate the rotating sleeve, and the helical groove forces the limiting shaft and base to move upward, allowing the microwave probes to extend out of the through hole. At the same time, the second transmission gear at the other end of the transmission shaft drives the rack to move the cover plate horizontally, opening the through hole to allow the microwave probes to extend. When the drive motor reverses, the microwave probes retract, and the cover plate resets to close the through hole, protecting the probes. This linkage method achieves one-drive-two-action, reducing independent drive components and improving the synchronization and reliability of the operation.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A microwave-assisted roller cutter holder for rock breaking, characterized in that, include: The tool holder body has a hob inside; A microwave probe is disposed inside the tool holder body, and a through hole is formed on the end face of the tool holder body at the corresponding position. A rotating sleeve is connected at one end to the microwave probe and at the other end to the inner wall of the tool holder body. A driving device is used to drive the rotating sleeve to rotate so that the microwave probe follows the rotating sleeve to move in a first direction and can extend out of the through hole; A cover plate is embedded inside the tool holder body and is driven by the driving device to move along the second direction and can close the through hole; When the driving device drives the microwave probe to extend out of the through hole, it simultaneously moves the cover plate to open the through hole. When the driving device drives the microwave probe to move into the tool holder body, it simultaneously moves the cover plate to close the through hole.

2. The cutter holder for microwave-assisted rock breaking according to claim 1, characterized in that, The tool holder body includes: The hob mounting plate includes two sets arranged opposite to each other, and the hobs are connected to the hob mounting plate; The side plates include two sets arranged opposite to each other, and are respectively connected to both sides of the two sets of hob mounting plates; Each of the side plates is provided with two sets of microwave probes, and the rotating sleeve, the driving device and the cover plate are all provided in the side plate.

3. The cutter holder for microwave-assisted rock breaking as described in claim 2, characterized in that: The rotating sleeve is open at one end and has a spiral groove on its side wall. A base is provided at one end of the microwave probe. The base is movably disposed inside the rotating sleeve. A limiting shaft is provided on the base and is movably disposed inside the spiral groove.

4. The cutter holder for microwave-assisted rock breaking according to claim 3, characterized in that, The driving device includes: Drive motor; The drive shaft is connected to the output end of the drive motor via a belt; A first transmission gear is connected to one end of the transmission shaft, and a driven gear is provided on the rotating sleeve, which meshes with the first transmission gear; A second transmission gear is connected to the other end of the transmission shaft, and a rack is provided on the cover plate, which meshes with the second transmission gear.

5. A microwave-assisted roller cutter holder for rock breaking according to claim 4, characterized in that, The cover plate includes: A blocking part is used to move to the position of the through hole and close it; A guide portion is provided, wherein a guide groove is formed in the side plate, and the guide portion is movably disposed within the guide groove; A connecting part is provided along the length direction of the cover plate, and the rack is provided on the connecting part.

6. A microwave-assisted roller cutter holder for rock breaking according to claim 5, characterized in that: The output end of the drive motor is connected to the two drive shafts via the belt. Two rotating sleeves are provided between the two first drive gears, and the racks on the two cover plates are arranged opposite each other.

7. A microwave-assisted roller cutter holder for rock breaking according to claim 6, characterized in that: The first direction is perpendicular to the end face of the tool holder body, and the second direction is perpendicular to the first direction.

8. A microwave-assisted roller cutter holder for rock breaking according to claim 2, characterized in that, Also includes: A cutter shaft has its two ends connected to the hob mounting plate, and the hob is connected to the cutter shaft; A clamping block is connected to the hob mounting plate, and both ends of the cutter shaft are connected to the clamping block to prevent rotation. A locking device is used to fix the cutter shaft.

9. A microwave-assisted roller cutter holder for rock breaking according to claim 8, characterized in that: The clamping block is a C-shaped clamping block, and connecting blocks are respectively provided at both ends of the cutter shaft. The connecting blocks have an arc-shaped part and an anti-rotation part that cooperate with the C-shaped clamping block.

10. A microwave-assisted roller cutter holder for rock breaking according to claim 9, characterized in that, The locking device includes: The wedge block, the connecting block also having a locking part, the wedge block abutting against the locking part; A locking bolt, one end of which is connected to the wedge block, and the other end of which extends out of the cutter mounting plate; The fixing block is connected to the hob mounting plate and forms a threaded connection with the locking bolt.

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