A displacement control method for the top anchor drill frame of a tunneling and anchoring combined unit

Abstract

This invention provides a displacement control method for the top anchor drill frame of a tunneling and anchoring combined unit, including assembling a lifting and sliding mechanism and operating the lifting and sliding mechanism. The lifting and sliding mechanism includes a top anchor drill frame and a top drill base located on the same side of the tunneling and anchoring unit frame. A horizontal sliding component is installed on the base of the top drill base. After assembling the lifting and sliding mechanism, the top drill base is moved closer to or further away from the ground by operating the lifting and sliding mechanism. The top anchor drill frame extends and retracts vertically synchronously with the top drill base, and the horizontal sliding component drives the top anchor drill frame to slide horizontally along the top drill base. Horizontal sliding and vertical lifting increase the working freedom of the top anchor drill frame. Horizontal sliding significantly increases the anchoring range, providing a significant anchoring advantage for special roadways with poor roof conditions but requiring vertical drilling. Vertical lifting allows the top drill mechanism to be grounded during operation, transferring most of the drilling force to the ground, greatly reducing the stress on the frame structure and vulnerable parts. Furthermore, the structure is compact and can be adapted to models with limited space.

Description

Technical Field

[0001] This invention belongs to the field of coal mining machinery, and specifically relates to a displacement control method for the top anchor drill frame of a combined tunneling and anchoring unit. Background Technology

[0002] Currently, the top anchoring drill frame of the roadheader-anchor unit in the industry has relatively limited freedom of movement, mostly falling into two types: vertical lifting only or horizontal sliding only. Vertical lifting only severely restricts the anchoring range of the top anchoring drill frame, especially limiting its effectiveness in roadways with poor roof conditions and requiring vertical drilling. Horizontal sliding only results in an overly bulky structure, with the drilling force of the top drill frame borne entirely by the frame, causing excessive damage to the frame structure. The connection between the drill frame base and the frame is particularly vulnerable to damage. Both structures restrict the roadheader-anchor unit's tunneling efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a displacement control method for the top anchor drill frame of a tunneling and anchoring combined unit, so as to overcome the above-mentioned technical defects.

[0004] To solve the above-mentioned technical problems, the present invention provides a displacement control method for the top anchor drill frame of a tunneling and anchoring unit, comprising:

[0005] Assemble the lifting and sliding mechanism:

[0006] Install the top anchor drill frame and the top drill base on the same side of the tunneling and anchoring machine frame. The top drill base is located directly below the top anchor drill frame. Take two vertical lifting cylinders and hinge the fixed end of the vertical lifting cylinder to the tunneling and anchoring machine frame. Hinge the piston rod end of the vertical lifting cylinder to the top drill base. Install a horizontal sliding component on the seat of the top drill base so that the bottom of the top anchor drill frame is fixed to the horizontal sliding component.

[0007] Control the lifting and sliding mechanism:

[0008] Send a vertical rise or fall command to two vertical lifting cylinders. The two vertical lifting cylinders receive the command and control their respective telescopic rods to extend or retract synchronously. When the telescopic rods of the two vertical lifting cylinders extend synchronously, the top drill base gradually approaches the ground. When the telescopic rods of the two vertical lifting cylinders retract synchronously, the top drill base gradually moves away from the ground. The top anchor drill frame extends and retracts vertically synchronously with the top drill base.

[0009] A horizontal sliding command is sent to the horizontal sliding component. The horizontal sliding component receives the command and drives the top anchor drill frame to slide horizontally along the base of the top drill base.

[0010] Furthermore, the horizontal sliding component includes a horizontal sliding cylinder, a slider, and a slide rail arranged sequentially from top to bottom. The cylinder of the horizontal sliding cylinder is fixed to the upper surface of the slider, the slider is slidably mounted on the slide rail and can slide along the slide rail, and the slide rail is fixedly laid on the top drill base.

[0011] Both ends of the piston rod of the horizontal sliding cylinder are fixed to the top drill base by ear plates;

[0012] A support plate is also provided on the upper surface of the slider, and the support plate is fixed to the top anchor drill frame.

[0013] Preferably, the slider includes a first rectangular plate placed horizontally directly above the top drill base. The two long sides of the first rectangular plate extend vertically downward to form two parallel second vertical plates. The two long sides below the second vertical plates extend horizontally to form two third horizontal plates. The two third horizontal plates are located between the two second vertical plates and do not contact each other.

[0014] The slide rail is a T-shaped structure with a longitudinal cross-section that is spliced ​​or integrally formed by an upper horizontal rectangular plate and a lower horizontal rectangular plate. The upper horizontal rectangular plate is embedded in a cavity formed by the lower surface of a first rectangular plate, two second vertical plates and two third horizontal plates. The lower horizontal rectangular plate is sandwiched between the two third horizontal plates, and the lower surface of the lower horizontal rectangular plate is fixed to the top drill base.

[0015] The slider is driven by a horizontal sliding cylinder to move along the slide rail.

[0016] Furthermore, two parallel support plates are provided on the upper surface of the slider. Each support plate is perpendicular to the first rectangular plate, and multiple windows are provided on the surface of each support plate.

[0017] The two support plates are symmetrically arranged about the horizontal sliding cylinder.

[0018] Furthermore, the bottom of the top anchor drill frame is fixed to the top end face of the two support plates, and the horizontal sliding cylinder is placed in the space formed by the bottom of the top anchor drill frame, the two support plates and the first rectangular plate, and the horizontal sliding cylinder does not contact the top anchor drill frame.

[0019] Furthermore, two parallel grooves are formed on the upper surface of the upper horizontal rectangular plate, and a wear-resistant strip is fixedly embedded in each groove. The upper surface of the wear-resistant strip contacts the lower surface of the first rectangular plate, and the lower surface of the first rectangular plate does not contact the upper surface of the upper horizontal rectangular plate.

[0020] Preferably, the two vertical lifting cylinders are arranged symmetrically about the center line of the top drill base.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention increases the working freedom of the top anchor drill frame by realizing horizontal sliding and vertical lifting. Horizontal sliding significantly increases the anchoring range, providing a significant anchoring advantage for special roadways with poor roof conditions but requiring vertical drilling. Vertical lifting allows the top drilling mechanism to be grounded during operation, transferring most of the drilling force to the ground, greatly reducing the stress on the frame structure and vulnerable parts, protecting them, and its compact structure makes it suitable for models with limited space.

[0023] To make the above description of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is an isometric drawing of the lifting and sliding mechanism of the top anchor drill frame of the tunneling and anchoring combined unit.

[0025] Figure 2 This is a side view of the lifting and sliding mechanism applicable to the top anchor drill frame of a tunneling and anchoring combined unit.

[0026] Figure 3 This is a structural schematic diagram of a horizontal sliding component.

[0027] Figure 4 This is a side view of the horizontal sliding component.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Tunneling and anchoring machine frame; 2. Top anchor drill frame; 3. Top drill base; 4. Vertical lifting cylinder; 5. Horizontal sliding component;

[0030] 501. Horizontal sliding cylinder; 502. Slider; 503. Slide rail; 504. Upper horizontal rectangular plate; 505. Support plate; 506. First rectangular plate; 507. Second vertical plate; 508. Third horizontal plate; 509. Lower horizontal rectangular plate; 510. Window; 511. Wear-resistant strip. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0032] It should be noted that, in this invention, the upper, lower, left, and right in the figure are regarded as the upper, lower, left, and right of the displacement control method of the top anchor drill frame of the tunneling and anchoring combined unit described in this specification.

[0033] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0034] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0035] This embodiment relates to a displacement control method for the top anchor drill frame of a tunneling and anchoring combined unit, including:

[0036] Assemble the lifting and sliding mechanism:

[0037] Reference Figure 1 On the same side of the tunneling and anchoring machine frame 1, a top anchoring drill frame 2 and a top drill base 3 are installed, wherein the top drill base 3 is located directly below the top anchoring drill frame 2. Two vertical lifting cylinders 4 are taken, and the fixed end of the vertical lifting cylinder 4 is hinged to the tunneling and anchoring machine frame 1. The piston rod end of the vertical lifting cylinder 4 is hinged to the top drill base 3. A horizontal sliding component 5 is installed on the seat of the top drill base 3 so that the bottom of the top anchoring drill frame 2 is fixed to the horizontal sliding component 5.

[0038] Control the lifting and sliding mechanism:

[0039] Send a vertical rise or fall command to the two vertical lifting cylinders 4. The two vertical lifting cylinders 4 receive the command and control their respective telescopic rods to extend or retract synchronously. When the telescopic rods of the two vertical lifting cylinders 4 extend synchronously, the top drill base 3 gradually approaches the ground. When the telescopic rods of the two vertical lifting cylinders 4 retract synchronously, the top drill base 3 gradually moves away from the ground. The top anchor drill frame 2 extends and retracts vertically synchronously with the top drill base 3. The extension and retraction amount is determined according to the command.

[0040] A horizontal sliding command is sent to the horizontal sliding component 5. The horizontal sliding component 5 receives the command and drives the top anchor drill frame 2 to slide horizontally along the base of the top drill base 3. The displacement value of the horizontal sliding is determined by the command, that is, the sliding stops when the preset value is reached.

[0041] The instructions can be signal transmissions or manual control, without restriction.

[0042] The aforementioned tunneling and anchoring frame 1 refers to the frame of the tunneling and anchoring combined unit. The tunneling and anchoring frame 1 is relatively stationary. The synchronous extension and retraction of the two vertical lifting cylinders 4 can drive the synchronous extension and retraction of the top drill base 3. The top anchoring drill frame 2 and the top drill base 3 form a whole. When the top drill base 3 extends and retracts, the top anchoring drill frame 2 also extends and retracts accordingly, thereby realizing the vertical lifting and lowering of the top anchoring drill frame 2.

[0043] The two vertical lifting cylinders 4 can achieve synchronous lifting through a synchronizing valve.

[0044] If the stroke of the vertical lifting cylinder 4 is selected to be 290mm, then the maximum lifting distance of the top drill base 3 can be 170mm from the ground, and the maximum lowering distance can reach 120mm from the ground. The adjustment range of 120mm from the ground is relatively friendly to soft, uneven or partially collapsed ground conditions, which greatly reduces the stress on the frame structure and vulnerable parts.

[0045] The bottom of the top anchor drill frame 2 is fixed to the horizontal sliding component 5. The horizontal sliding component 5 drives the top anchor drill frame 2 to slide horizontally on the top drill base 3 in the horizontal direction. The horizontal sliding can significantly increase the anchoring range, which has a great anchoring advantage for special roadways with poor roof conditions but which must be drilled vertically.

[0046] It should be noted that the lifting and sliding mechanism can independently achieve vertical lifting and horizontal sliding, and can also achieve both vertical lifting and horizontal sliding at the same time. Moreover, vertical lifting only requires two vertical lifting cylinders 4, while the horizontal sliding component 5 is placed in the space formed by the top anchor drill frame 2 and the top drill base 3. The structure is compact and can be adapted to models with limited space.

[0047] Reference Figure 3 The horizontal sliding component 5 includes a horizontal sliding cylinder 501, a slider 502 and a slide rail 503 arranged sequentially from top to bottom. The cylinder of the horizontal sliding cylinder 501 is fixed to the upper surface of the slider 502. The slider 502 is slidably mounted on the slide rail 503 and can slide along the slide rail 503. The slide rail 503 is fixedly laid on the top drill base 3.

[0048] The horizontal sliding cylinder 501 can be a cylinder with a stroke of 310mm or a cylinder with other strokes.

[0049] It should be noted that the piston rod of the horizontal sliding cylinder 501 is fixed, while the cylinder barrel slides along the piston rod. Therefore, if... Figure 3 As shown, both ends of the piston rod of the horizontal sliding cylinder 501 are fixed to the top drill base 3 via ear plates.

[0050] like Figure 3As shown, a support plate 505 is also provided on the upper surface of the slider 502. The support plate 505 is fixed to the top anchor drill frame 2. The function of the support plate 505 is to bear the weight of the top anchor drill frame 2. In order to distribute the force evenly and maintain balance during sliding, the two support plates 505 are symmetrically arranged about the horizontal sliding cylinder 501. The shape of the support plate 505 is not limited and can be any shape. Figure 3 The rectangle shape can also be other forms or shapes.

[0051] The structure of slider 502 can vary, but considering the limited space and the need to achieve a compact structure, the preferred structure of slider 502 in this embodiment is as follows:

[0052] See Figure 4 The slider 502 includes a first rectangular plate 506 placed horizontally directly above the top drill base 3. The two long sides of the first rectangular plate 506 extend vertically downward to form two parallel second vertical plates 507. The two long sides below the second vertical plates 507 extend horizontally to form two third horizontal plates 508. The two third horizontal plates 508 are located between the two second vertical plates 507 and do not contact each other. In other words, from the perspective of longitudinal section, the slider 502 is an axisymmetric structure. The slider 502 can be integrally formed or spliced ​​together.

[0053] The cylinder barrel of the horizontal sliding cylinder 501 is fixed to the upper surface of the first rectangular plate 506. However, it should be noted that the cylinder barrel does not directly contact the first rectangular plate 506, but is mounted on the first rectangular plate 506 through a support. The purpose of this design is to facilitate the disassembly, maintenance, repair and replacement of the horizontal sliding cylinder 501.

[0054] In other words, the cylinder barrel and slider 502 of the horizontal sliding cylinder 501 are integrated, and the two slide synchronously after becoming a whole.

[0055] Depend on Figure 4 It can be seen that the horizontal sliding cylinder 501 is arranged in the center of the upper surface of the first rectangular plate 506, and the two support plates 505 are symmetrically arranged about the horizontal sliding cylinder 501. This is to ensure uniform force distribution and to ensure the balance of the top anchor drill frame 2 during horizontal sliding.

[0056] The horizontal sliding principle of the lifting and sliding mechanism is as follows:

[0057] When the horizontal sliding cylinder 501 is activated, the cylinder barrel of the horizontal sliding cylinder 501 moves to the left or right along the piston rod (towards...). Figure 3 The slider 502 moves in the direction shown. Since the cylinder of the horizontal sliding cylinder 501 is fixed on the first rectangular plate 506 of the slider 502, the slider 502 slides accordingly, and the slider 502 moves along the slide rail 503.

[0058] It is worth mentioning that during the horizontal sliding process, the two third horizontal plates 508 do not contact the top drill base 3, that is, the two third horizontal plates 508 are suspended in the air, in order to reduce friction and achieve smooth sliding.

[0059] like Figure 4 As shown, the slide rail 503 is a T-shaped structure with a longitudinal cross-section formed by splicing or integrally forming an upper horizontal rectangular plate 504 and a lower horizontal rectangular plate 509. The upper horizontal rectangular plate 504 is embedded in the cavity formed by the lower surface of the first rectangular plate 506, two second vertical plates 507 and two third horizontal plates 508. The lower horizontal rectangular plate 509 is sandwiched between the two third horizontal plates 508, and the lower surface of the lower horizontal rectangular plate 509 is fixed to the top drill base 3.

[0060] The T-shaped structure of the slide rail 503 and the slotted form of the slider 502 combine to form a compact structure, making full use of the space between the top anchor drill frame 2 and the top drill base 3, which is particularly suitable for models with limited space.

[0061] Two parallel support plates 505 are provided on the upper surface of the slider 502. Each support plate 505 is perpendicular to the first rectangular plate 506. Multiple windows 510 are provided on the surface of each support plate 505. The windows 510 can be evenly distributed on the support plate 505. The functions of the windows 510 are to reduce weight and to facilitate the wiring of the hydraulic cylinder oil circuit.

[0062] The bottom plate of the top anchor drill frame 2 is fixed to the top end face of the two support plates 505. The horizontal sliding cylinder 501 is placed in the box-shaped space formed by the bottom plate of the top anchor drill frame 2, the two support plates 505 and the first rectangular plate 506. The horizontal sliding cylinder 501 does not contact the top anchor drill frame 2 to avoid damage to the cylinder by heavy pressure.

[0063] The space formed by the bottom plate of the top anchor drill frame 2, the two support plates 505, and the first rectangular plate 506 can also be called a box structure. This box structure can still be drilled after being lifted by the vertical lifting cylinder. It can adjust the height of the top drill anchor and make the overall machine height more coordinated with the height of the high anchor. It should be noted that the top anchor drill frame 2 can be fixed to the upper surface of the bottom plate, and the lower surface of the bottom plate is fixed to the two support plates 505, thus forming a solid box structure.

[0064] See Figure 4 Two parallel grooves are formed on the upper surface of the upper horizontal rectangular plate 504. A wear-resistant strip 511 is fixedly embedded in each groove. The upper surface of the wear-resistant strip 511 contacts the lower surface of the first rectangular plate 506, and the lower surface of the first rectangular plate 506 does not contact the upper surface of the upper horizontal rectangular plate 504. Specifically:

[0065] The slider 502 slides along the slide rail 503 and along the wear-resistant strip 511. Only the upper surfaces of the two wear-resistant strips 511 contact the lower surface of the first rectangular plate 506, which can reduce friction. Moreover, the wear-resistant strips 511 are easier to replace, which facilitates the maintenance of the system.

[0066] In order to ensure that the top drill base 3 remains horizontal and does not tilt after being raised and lowered, this embodiment preferably arranges two vertical lifting cylinders 4 symmetrically about the center line of the top drill base 3.

[0067] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A method for displacement control of the top anchor drill frame of a tunneling and anchoring combined unit, characterized in that, include: Assemble the lifting and sliding mechanism: Install a top anchor drill frame (2) and a top drill base (3) on the same side of the anchoring machine frame (1), wherein the top drill base (3) is located directly below the top anchor drill frame (2). Take two vertical lifting cylinders (4), hinge the fixed end of the vertical lifting cylinder (4) to the anchoring machine frame (1), and hinge the piston rod end of the vertical lifting cylinder (4) to the top drill base (3). Install a horizontal sliding component (5) on the seat of the top drill base (3) so that the bottom of the top anchor drill frame (2) is fixed to the horizontal sliding component (5). Control the lifting and sliding mechanism: Send a vertical rise or vertical fall command to the two vertical lifting cylinders (4). The two vertical lifting cylinders (4) receive the command and control their respective telescopic rods to extend or retract synchronously. When the telescopic rods of the two vertical lifting cylinders (4) extend synchronously, the top drill base (3) gradually approaches the ground. When the telescopic rods of the two vertical lifting cylinders (4) retract synchronously, the top drill base (3) gradually moves away from the ground. The top anchor drill frame (2) extends and retracts vertically synchronously with the top drill base (3). Send a horizontal sliding command to the horizontal sliding component (5), the horizontal sliding component (5) receives the command and drives the top anchor drill frame (2) to slide horizontally along the seat of the top drill base (3); The lifting and sliding mechanism can independently achieve vertical lifting and horizontal sliding, or it can simultaneously achieve both vertical lifting and horizontal sliding. The horizontal sliding component (5) includes a horizontal sliding cylinder (501), a slider (502) and a slide rail (503) arranged sequentially from top to bottom. The cylinder of the horizontal sliding cylinder (501) is fixed to the upper surface of the slider (502). The slider (502) is slidably mounted on the slide rail (503) and can slide along the slide rail (503). The slide rail (503) is fixedly laid on the top drill base (3). The piston rod of the horizontal sliding cylinder (501) is fixed to the top drill base (3) at both ends by ear plates; A support plate (505) is also provided on the upper surface of the slider (502), and the support plate (505) is fixed to the top anchor drill frame (2); The slider (502) includes a first rectangular plate (506) placed horizontally directly above the top drill base (3). The two long sides of the first rectangular plate (506) extend vertically downward to form two parallel second vertical plates (507). The two long sides below the second vertical plates (507) extend horizontally to form two third horizontal plates (508). The two third horizontal plates (508) are located between the two second vertical plates (507) and do not contact each other. When the horizontal sliding cylinder (501) is activated, the cylinder barrel of the horizontal sliding cylinder (501) moves to the left or right along the piston rod. Since the cylinder barrel of the horizontal sliding cylinder (501) is fixed on the first rectangular plate (506) of the slider (502), the slider (502) slides accordingly, and the slider (502) moves along the slide rail (503). During the horizontal sliding process, the two third horizontal plates (508) do not contact the top drill base (3); The slide rail (503) is a T-shaped structure with a longitudinal cross section of T, formed by splicing or integrally forming an upper horizontal rectangular plate (504) and a lower horizontal rectangular plate (509). The upper horizontal rectangular plate (504) is embedded in a cavity formed by the lower surface of the first rectangular plate (506), two second vertical plates (507) and two third horizontal plates (508). The lower horizontal rectangular plate (509) is sandwiched between the two third horizontal plates (508), and the lower surface of the lower horizontal rectangular plate (509) is fixed to the top drill base (3). The horizontal sliding cylinder (501) drives the slider (502) to move along the slide rail (503).

2. The displacement control method for the top anchor drill frame of the tunneling and anchoring combined unit as described in claim 1, characterized in that, Two parallel support plates (505) are provided on the upper surface of the slider (502). Each support plate (505) is perpendicular to the first rectangular plate (506), and multiple windows (510) are provided on the surface of each support plate (505). Two support plates (505) are symmetrically arranged about the horizontal sliding cylinder (501).

3. The displacement control method for the top anchor drill frame of the tunneling and anchoring combined unit as described in claim 2, characterized in that: The bottom of the top anchor drill frame (2) is fixed to the top end face of the two support plates (505). The horizontal sliding cylinder (501) is placed in the space formed by the bottom of the top anchor drill frame (2), the two support plates (505) and the first rectangular plate (506), and the horizontal sliding cylinder (501) does not contact the top anchor drill frame (2).

4. The displacement control method for the top anchor drill frame of the tunneling and anchoring combined unit as described in claim 1, characterized in that: Two parallel grooves are provided on the upper surface of the upper horizontal rectangular plate (504), and a wear-resistant strip (511) is fixedly embedded in each groove. The upper surface of the wear-resistant strip (511) contacts the lower surface of the first rectangular plate (506), and the lower surface of the first rectangular plate (506) does not contact the upper surface of the upper horizontal rectangular plate (504).

5. The displacement control method for the top anchor drill frame of the tunneling and anchoring combined unit as described in any one of claims 1 to 4, characterized in that: The two vertical lifting cylinders (4) are arranged symmetrically about the center line of the top drill base (3).

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