Frame-shaped telescopic mechanism type partial-section vertical shaft cutting mechanism and cutting process thereof

Abstract

The invention discloses a frame-shaped telescopic mechanism type partial-section vertical shaft cutting mechanism and a cutting process thereof. The cutting mechanism comprises a swing mechanism, a telescopic mechanism, a cutting head, a swing oil cylinder and a supporting piece. The telescopic mechanism comprises a frame-shaped outer barrel, a telescopic piece and a telescopic oil cylinder, the telescopic piece and the telescopic oil cylinder are matched with the frame-shaped outer barrel, the frame-shaped outer barrel is hinged to the swing mechanism, the telescopic piece is in sliding connection with the frame-shaped outer barrel, and the telescopic oil cylinder is installed on the frame-shaped outer barrel and connected with the telescopic piece; the cutting head is installed at the end, away from the telescopic mechanism, of the telescopic piece. One end of the swing oil cylinder is hinged with the slewing mechanism, and the other end is hinged with the frame-shaped outer cylinder; the supporting piece is installed on the frame-shaped outer cylinder, is far away from the swing mechanism and can abut against the side wall of the telescopic piece. The telescopic structure solves the problem that a telescopic structure of an existing vertical shaft cutting mechanism is low in reliability.

Description

Technical Field

[0001] The present invention belongs to the technical field of underground coal mine transportation equipment, and in particular relates to a frame-shaped telescopic mechanism-type partial-section vertical shaft cutting mechanism and a cutting process thereof. Background Art

[0002] As an important part of coal mine development, the shaft is the throat project for entering underground mining, a safe passage to ensure the transportation or lifting of personnel, equipment, materials, resources, etc., and the primary project for underground coal resource mining. At present, in addition to the conventional drilling and blasting drilling technology, mechanized drilling technology equipment includes reverse drilling rigs, shaft boring machines (such as partial section cutting boring, large diameter rotary table full section boring, caisson boring, etc.), and shaft drilling rigs (such as large diameter shaft drilling first and then expansion, small diameter shaft one-time drilling, etc.). Rock breaking tools include full section disc cutters, reverse drilling rig tooth cutters, and partial section pick cutters. In view of the problems of mud-packed drill bits (cutters), low cutting efficiency, and low reliability of telescopic structures under medium soft rock geological conditions, it is necessary to provide a rectangular telescopic cylinder type partial section shaft cutting mechanism to solve the above problems. Summary of the invention

[0003] The purpose of the present disclosure is to provide a frame-shaped telescopic mechanism-type partial-section shaft cutting mechanism and a cutting process thereof, which can solve at least part of the above-mentioned technical problems.

[0004] A first aspect of the embodiments of the present disclosure provides a frame-shaped telescopic mechanism-type partial cross-section shaft cutting mechanism, the cutting mechanism comprising:

[0005] Rotating mechanism;

[0006] The telescopic mechanism comprises a frame-shaped outer cylinder, a telescopic member adapted to the frame-shaped outer cylinder and a telescopic oil cylinder, wherein the frame-shaped outer cylinder is hinged to the rotary mechanism, the telescopic member and the frame-shaped outer cylinder are slidably connected, and the telescopic oil cylinder is installed on the frame-shaped outer cylinder and connected to the telescopic member;

[0007] A cutting head, mounted on an end of the telescopic member away from the telescopic mechanism;

[0008] A swing cylinder, one end of which is hinged to the rotary mechanism, and the other end of which is hinged to the frame-shaped outer cylinder;

[0009] The support member is installed on the frame-shaped outer cylinder, is far away from the rotary mechanism, and can abut against the side wall of the telescopic member.

[0010] Optionally, there are multiple support members, and the multiple support members are distributed along the circumference of the frame-shaped outer cylinder and can respectively abut against different side walls of the telescopic member.

[0011] Optionally, the support member includes a support seat and a support head; the support seat is fixedly connected to the frame-shaped outer cylinder, and the support head is slidably connected to the support seat, and has a first position that is not in contact with the telescopic member and a second position that abuts the telescopic member; when the sliding distance of the telescopic member relative to the frame-shaped outer cylinder exceeds a predetermined value and the cutting mechanism is in a working state, the support head is located at the second position.

[0012] Optionally, the cutting mechanism further includes a position sensor, which is mounted on the frame-shaped outer cylinder and is used to detect the position of the telescopic member.

[0013] Optionally, a sliding direction between the support head and the support seat is perpendicular to a sliding direction between the frame-shaped outer cylinder and the telescopic member.

[0014] Optionally, the support member includes a hydrostatic cylinder, and the protruding end of the hydrostatic cylinder can abut against the side wall of the telescopic member.

[0015] Optionally, the hydrostatic cylinder includes a cylinder barrel, a cylinder rod, a seal and an oil inlet and return interface; the cylinder rod is slidably mounted on the cylinder barrel, the seal is sealingly arranged between the cylinder barrel and the cylinder rod, and the oil inlet and return interface is arranged on the cylinder barrel and connected to the interior of the cylinder barrel.

[0016] Optionally, the slewing mechanism includes a slewing seat, a slewing motor mounted on the slewing seat, and a first connecting seat and a second connecting seat fixedly connected to the output shaft of the slewing motor; the first connecting seat is hinged to the telescopic mechanism, the second connecting seat is hinged to the swing cylinder, and the slewing motor drives the first connecting seat and the second connecting seat to rotate around its output shaft.

[0017] A second aspect of the disclosed embodiment provides a cutting process of a partial-section shaft cutting mechanism of a frame-shaped telescopic mechanism, wherein the cutting process adopts the cutting mechanism as described above.

[0018] Optionally, the cutting mechanism realizes the movement of the cutting head in the axial direction of the shaft through a telescopic mechanism, realizes the cutting of the cutting head in the axial direction of the shaft through a swing cylinder, and realizes the cutting of the cutting head in the circumferential direction of the shaft through a rotary motor, wherein a slag chute is also provided below the shaft, and the rock cuttings cut off from the shaft slide down into the slag chute along the cutting trajectory and are transported out at the bottom of the slag chute by a belt conveyor or an engineering vehicle, thereby realizing the synchronous matching of efficient rock breaking and slag discharge.

[0019] The main technical effect achieved by the embodiment of the present disclosure is: the embodiment of the present disclosure provides lateral support for the telescopic member by installing a support member on the part of the frame-shaped outer cylinder away from the rotating mechanism, so as to improve the stability and reliability of the telescopic mechanism when it cuts and generates a large torque when reaching an extreme telescopic amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the installation of a frame-shaped telescopic cylinder type partial cross-section shaft cutting mechanism;

[0021] Figure 2 It is a structural schematic diagram of the shaft cutting mechanism;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the telescopic mechanism;

[0023] Figure 4 It is the structural schematic diagram of the static pressure cylinder;

[0024] Figure 5 It is a schematic diagram of the cutting process from a vertical perspective;

[0025] Figure 6 Schematic diagram of the cutting process from a horizontal perspective.

[0026] Explanation of the reference numerals: 1. slewing mechanism; 11. first connecting seat; 12. second connecting seat; 13. pin shaft; 2. swing cylinder; 3. telescopic cylinder; 4. telescopic mechanism; 41. telescopic member; 411. connecting plate; 42. frame-type outer cylinder; 422. dustproof ring; 423. dustproof seat; 424. sliding plate; 425. oil cup; 43. swing ear seat; 44. air filter; 45. telescopic ear seat; 46. static pressure cylinder; 461. cylinder rod; 462. cylinder barrel; 463. sealing member; 464. oil inlet and return interface; 5. horizontal axis milling head; 51. hydraulic motor seat; 52. cutting head; 6. vertical shaft rock formation; 61. blind area to be cut; 7. slag chute. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The modes described in the following exemplary embodiments do not represent all modes consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0028] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantitative limitation, but indicate that there is at least one, and if only "one" is referred to, it will be separately described. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] like Figure 1-6 As shown, an embodiment of the present disclosure provides a frame-shaped telescopic mechanism-type partial-section shaft cutting mechanism, comprising a slewing mechanism 1, a swing cylinder 2, a telescopic mechanism 4 and a transverse axis milling head 5.

[0030] The slewing mechanism 1 realizes continuous rotation around the central axis of the shaft by means of hydraulic pressure or motor. The slewing mechanism 1 includes a slewing seat and a slewing motor installed on the slewing seat. The output shaft of the slewing motor is connected to the central area of ​​the slewing mechanism so that the slewing motor can drive the slewing mechanism to rotate around the output shaft. Specifically, the slewing mechanism 1 also includes a first connecting seat 11, a second connecting seat 12 and a pin 13. The tail of the partial section shaft cutting mechanism of the frame-shaped outer cylinder 42 is connected and installed through the pin 13 and the first connecting seat 11.

[0031] The two ends of the swing cylinder 2 are connected through the pin 13 and the second connecting seat 12 and the swing ear seat 43 on the telescopic mechanism 4 to realize the up and down cutting trajectory of the horizontal axis milling head 5 as shown in Figure 5.

[0032] The two ends of the telescopic cylinder 3 are also connected through the pin 13 and the telescopic ear seats 45 at the front and rear ends of the telescopic mechanism 4 to achieve the following Figure 5The cutting trajectories of the transverse axis milling head 5 at different depths are shown.

[0033] The telescopic mechanism 4 includes a frame-type outer cylinder 42, a telescopic member 41, a swinging ear seat 43, an air filter 44 and a telescopic ear seat 45. The telescopic member 41 is welded by a connecting plate 411 and a telescopic member 41, and the frame-type outer cylinder 42 is composed of an outer cylinder, a dust ring 422, a dust seat 423, a sliding plate 424 and an oil cup 425. It should be noted that the frame-type outer cylinder 42 can be a non-circular structure such as a triangular outer cylinder, a rectangular outer cylinder, a pentagonal outer cylinder, a hexagonal outer cylinder, etc. The telescopic member 41 can be a cylindrical structure or an axial structure, and the present disclosure does not limit this.

[0034] The support member is installed on the frame-shaped outer cylinder 42, away from the rotary mechanism, and can abut against the side wall of the telescopic member 41; wherein, there are multiple support members, and the multiple support members are distributed along the circumference of the frame-shaped outer cylinder 42, and can respectively abut against different side walls of the telescopic member 41. The different side walls of the telescopic member 41 are supported by multiple support members, so that the telescopic member 41 can be supported by the multiple support members formed in a circle on the frame-shaped outer cylinder 42 during cutting, thereby ensuring that the telescopic member 41 is uniformly stressed, so as to reduce the influence of the torque increase caused by the increase in the force distance on the stability and reliability of the telescopic mechanism 4. The support member includes a support seat and a support head; the support seat is fixedly connected to the frame-shaped outer cylinder 42, and the support head is slidably connected to the support seat, and has a first position not in contact with the telescopic member 41 and a second position abutting against the telescopic member 41; when the sliding distance of the telescopic member 41 relative to the frame-shaped outer cylinder exceeds a predetermined value, and the cutting mechanism is in a working state, the support head is located at the second position. When the telescopic member 41 slides relative to the frame-shaped outer cylinder, the support head is in the first position where it does not contact the telescopic member 41 , thereby preventing the friction generated by the contact between the telescopic member 41 and the support member from affecting the sliding.

[0035] As an optional embodiment, the support member includes a hydrostatic oil cylinder 46. This is because the reaction force on the telescopic member 41 during cutting by the cutting mechanism is very large. By setting the support member as a hydrostatic oil cylinder 46, it is ensured that the support member can provide a stable and large supporting force to the side wall of the telescopic member 41 during cutting. Specifically, the hydrostatic oil cylinder 46 is composed of a cylinder rod 461, a cylinder barrel 462, a sealing member 463, and an oil inlet and return interface 464.

[0036] The transverse axis milling head 5 is composed of a hydraulic motor seat 51 and a cutting head 52. It should be noted that the cutting head 52 can be a transverse axis cutting head 52 or a longitudinal axis cutting head 52, and the present disclosure does not limit this.

[0037] The telescopic mechanism 4 in the disclosed embodiment is to install the telescopic member 41 in the telescopic member 41 inside the frame-shaped outer cylinder 42, and the two realize axial forward and backward telescopic movement through two telescopic oil cylinders 3, and the telescopic ear seat 45 is respectively at the rear end of the connecting plate 411 of the telescopic member 41 and the tail end of the frame-shaped outer cylinder 42. The dust seat 423 is fixed inside the front end of the frame-shaped outer cylinder by bolt connection, and the dust ring 422 is installed inside the dust seat 423 to form a closed fit with the outer wall of the telescopic member 41 to prevent dust from entering the telescopic mechanism 4 during the telescopic process. Multiple sliding plates 424 are fixed at the surrounding positions of the inner wall of the frame-shaped outer cylinder by bolt connection and in the space formed by the telescopic member 41. Grease is added through the oil cup 425 installed around the outer wall of the telescopic member 41 to reduce the wear of the sliding plate 424 and the outer wall of the frame-shaped outer cylinder during the telescopic process. In particular, the sliding plate 424 is a composite plate structure, and the part in contact with the outer wall of the frame-shaped outer cylinder is made of wear-resistant material with a small friction coefficient. The air filter 44 is installed at the rear of the frame-shaped outer cylinder, and together with the dust ring 422 at the front end of the frame-shaped outer cylinder, a relatively clean space is formed inside the telescopic mechanism 4 to prevent dust from entering and polluting the internal environment. In addition, the swing ear seat 43 is installed on the left and right sides of the frame-shaped outer cylinder, mainly to cooperate with the installation of the swing cylinder 2 to realize the up and down cutting process of the shaft cutting mechanism. The static pressure cylinder 46 is fixed around the outer wall of the frame-shaped outer cylinder by bolt connection. When the telescopic mechanism 4 is extended (before cutting), the cylinder rod 461 extends to contact the outer wall of the telescopic member 41 to reduce the influence of the increase in torque caused by the increase in force on the stability and reliability of the telescopic mechanism 4.

[0038] The connecting plate 411 in the telescopic member 41 and the hydraulic motor seat 51 of the transverse axis milling head 5 are connected and fixed by stoppers and bolts. The cutting head 52 is installed at both ends of the torque shaft of the hydraulic motor seat 51 and fixed by internal and external spline engagement and end face bolts.

[0039] The frame-shaped telescopic shaft cutting mechanism is connected to the hinge points of the rotary mechanism 1 (the connection hinge point at the tail end of the shaft cutting mechanism and the connection hinge point of the swing cylinder 2), and the rotary mechanism 1 can rotate 360° in a circle. The cutting process is as follows: Figure 5 As shown, the vertical shaft cutting mechanism realizes up and down cutting through the swing cylinder 2, that is, cutting from the inner wall of the vertical shaft (slag chute 7) to the outer wall, and the telescopic mechanism 4 is pushed by the telescopic cylinder 3 to achieve multiple extensions, and the horizontal axis milling head 5 is used to perform multi-layer cutting, and the rock cuttings cut from the vertical shaft rock layer 6 slide down along the cutting trajectory into the slag chute 7, and are transported out at the bottom of the slag chute 7 by a belt conveyor or an engineering vehicle, realizing the synchronous matching of efficient rock breaking and slag discharge. Figure 6As shown, the shaft cutting mechanism is driven by the rotary mechanism 1 to rotate and cut one circle in turn. It should be noted that due to the blind area in the middle of the cutting head 52, a blind area 61 to be cut will appear after cutting the shaft rock layer 6 up and down. It is necessary to rotate again for one circle to cut the blind area 61 to be cut in turn by cutting up and down. After the cycle is completed, the rotary mechanism 1 drives the shaft cutting mechanism to sink to a certain depth, and then a new round of cutting is carried out. The cutting process can improve the cutting efficiency and reduce the labor intensity of the operators through intelligent control operation.

[0040] The cutting head 52 is driven by the hydraulic motor base 51 to rotate and cut by hydraulic pressure.

[0041] The telescopic mechanism 4 pushes the telescopic part 41 to telescope along the axial direction of the frame-shaped outer cylinder 42 through the telescopic oil cylinder 3, wherein the inner side of the frame-shaped outer cylinder contains bolt-connected sliding plates 424 (for easy replacement), and the sliding plates 424 are composite plates, and the contact surface between them and the telescopic part 41 is made of wear-resistant material. A dust ring 422 and a dust seat 423 are installed at the front end of the frame-shaped outer cylinder, and the entry of rock cuttings and dust is reduced during the telescopic process by cooperating with the outer side of the telescopic part 41. The purpose of installing oil cups 425 around the frame-shaped outer cylinder is to add grease to the space formed by multiple sliding plates 424, the telescopic part 41, and the frame-shaped outer cylinder to ensure that there is no jamming during the telescopic process. An air filter 44 is installed at the tail of the frame-shaped outer cylinder 42 to reduce the impact of cutting dust on the inside of the telescopic mechanism 4.

[0042] In order to improve the stability and reliability of the telescopic mechanism 4 when it cuts and generates a large torque when reaching the extreme telescopic amount, in addition to the conventional increase in the wall thickness of the frame-type outer cylinder 42 and the use of high-performance materials, a plurality of static pressure cylinders 46 are installed on the outer walls around the frame-type outer cylinder 42 by bolt connection. During the telescopic process of the telescopic mechanism 4, the cylinder 462 retracts to reduce the resistance during the telescopic process. When the telescopic mechanism 4 is extended and retracted, the cylinder 462 extends out to contact the telescopic part 41, reducing the influence of the large torque generated by the cutting on the force of the frame-type outer cylinder 42.

[0043] As an optional embodiment, the cutting mechanism further includes a position sensor, which is mounted on the frame-shaped outer cylinder 42. The position sensor is used to detect the position of the telescopic member 41. When the sliding distance of the telescopic member 41 relative to the frame-shaped outer cylinder exceeds a predetermined value and the cutting mechanism is in a working state, the position sensor sends a signal to make the support head located at the second position, that is, to inject oil into the static pressure cylinder 46.

[0044] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism, characterized in that: The cutting mechanism comprises: Rotating mechanism; The telescopic mechanism comprises a frame-shaped outer cylinder, a telescopic member adapted to the frame-shaped outer cylinder and a telescopic oil cylinder, wherein the frame-shaped outer cylinder is hinged to the rotary mechanism, the telescopic member and the frame-shaped outer cylinder are slidably connected, and the telescopic oil cylinder is installed on the frame-shaped outer cylinder and connected to the telescopic member; A cutting head, mounted on an end of the telescopic member away from the telescopic mechanism; A swing cylinder, one end of which is hinged to the rotary mechanism, and the other end of which is hinged to the frame-shaped outer cylinder; The support member is installed on the frame-shaped outer cylinder, is far away from the rotary mechanism, and can abut against the side wall of the telescopic member.

2. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to claim 1, characterized in that: There are a plurality of the support members, which are distributed along the circumference of the frame-shaped outer cylinder and can respectively abut against different side walls of the telescopic member.

3. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to claim 1, characterized in that: The support member includes a support seat and a support head; the support seat is fixedly connected to the frame-shaped outer cylinder, and the support head is slidably connected to the support seat, and has a first position that is not in contact with the telescopic member and a second position that abuts against the telescopic member; when the sliding distance of the telescopic member relative to the frame-shaped outer cylinder exceeds a predetermined value and the cutting mechanism is in a working state, the support head is located at the second position.

4. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to any one of claims 1 to 3, characterized in that: The cutting mechanism further comprises a position sensor, and the position sensor is mounted on the frame-shaped outer cylinder.

5. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to claim 3, characterized in that: The sliding direction of the support head and the support seat is perpendicular to the sliding direction of the frame-shaped outer cylinder and the telescopic member.

6. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to any one of claims 1 to 3, characterized in that: The support member comprises a static pressure oil cylinder, and the extended end of the static pressure oil cylinder can abut against the side wall of the telescopic member.

7. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to claim 6, characterized in that: The hydrostatic cylinder comprises a cylinder barrel, a cylinder rod, a seal and an oil inlet and return interface; the cylinder rod is slidably mounted on the cylinder barrel, the seal is sealingly arranged between the cylinder barrel and the cylinder rod, and the oil inlet and return interface is arranged on the cylinder barrel and connected to the interior of the cylinder barrel.

8. A frame-shaped telescopic mechanism type partial cross-section shaft cutting mechanism according to claim 1, characterized in that: The slewing mechanism includes a slewing seat, a slewing motor installed on the slewing seat, and a first connecting seat and a second connecting seat fixedly connected to the output shaft of the slewing motor. The first connecting seat is hinged to the telescopic mechanism, and the second connecting seat is hinged to the swing cylinder. The slewing motor drives the first connecting seat and the second connecting seat to rotate around its output shaft.

9. A cutting process of a partial cross-section shaft cutting mechanism of a frame-shaped telescopic mechanism, characterized in that: The cutting process adopts the cutting mechanism as described in any one of claims 1-8.

10. The cutting process of the frame-shaped telescopic mechanism type partial section shaft cutting mechanism according to claim 9, characterized in that: The cutting mechanism realizes the movement of the cutting head in the axial direction of the shaft through a telescopic mechanism, the cutting head in the axial direction of the shaft through a swing cylinder, and the cutting head in the circumferential direction of the shaft through a rotary motor. A slag chute is also provided below the shaft. The rock cuttings cut from the shaft slide down into the slag chute along the cutting trajectory and are transported out at the bottom of the slag chute by a belt conveyor or an engineering vehicle, thereby realizing the synchronous matching of efficient rock breaking and slag discharge.

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