A propeller for use on a low-set anchor carrier

Abstract

This application discloses a propeller for use on a low-profile anchor bolt trolley, comprising a beam and a rock drill assembly. The beam has an mounting groove, within which a propulsion cylinder is installed. The propulsion cylinder includes a movable steel pipe, on which a front sheave and a rear sheave are rotatably mounted. A first pull rope is mounted on the front sheave, one end of which is connected to the rock drill assembly, and the other end passes over the front sheave and is fixed to the beam. A second pull rope is mounted on the rear sheave, one end of which is connected to the rock drill assembly, and the other end passes over the rear sheave and is fixed to the beam. A drill rod is fixedly mounted on the rock drill assembly, and a vertically retractable drill clamping mechanism is installed at the end of the beam. The advantages of this application are: the device is small and compact, allowing installation on low-profile trolleys for vertical drilling in low-profile tunnels; the front and rear sheaves enable the rock drill assembly to achieve twice the sliding distance of the movable steel pipe; and the head of the drill clamping mechanism is retractable, preventing obstruction of the anchor bolt entering the hole.

Description

Technical Field

[0001] This application relates to the field of tunnel support equipment technology, and in particular to a pusher used on a low-profile anchor bolt trolley. Background Technology

[0002] With the advancement of technology, people began to carve tunnels into mountains. Newly excavated tunnels often need to be anchored in the rock face for fixation to prevent collapse during construction. To further improve the speed of anchor installation, anchor trolleys are usually used. Before installing the anchors, a rock drill is transported to the rock face using a pusher, and then the rock drill is used to drill holes in the rock face that match the anchors.

[0003] Currently, in low-lying mine tunnels, due to limited space, drilling is typically done manually. This method suffers from shallow hole depth, poor hole quality, danger, and is time-consuming and labor-intensive. Furthermore, to improve the stability of rock drills during drilling, a clamping mechanism is usually installed at one end of the drill bit to fix its position and prevent significant swaying during operation. However, if a rock drill is used to advance anchor bolts, the clamping mechanism may hinder the bolt's advancement, thus reducing the bolt insertion efficiency. Therefore, it is necessary to improve the existing drill bit technology. Utility Model Content

[0004] One objective of this application is to provide a propulsion device for use on a low-profile anchor trolley that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a propeller for use on a low-profile anchor bolt trolley, comprising a beam and a rock drill assembly. The beam has an mounting groove, and a propulsion cylinder is installed within the mounting groove. The propulsion cylinder includes a movable steel pipe, on which a front sheave and a rear sheave are rotatably mounted. A first pull rope is mounted on the front sheave, one end of which is connected to the rock drill assembly, and the other end passes over the front sheave and is fixed to the beam. A second pull rope is mounted on the rear sheave, one end of which is connected to the rock drill assembly, and the other end passes over the rear sheave and is fixed to the beam. A drill rod is fixedly mounted on the rock drill assembly, and a vertically extendable drill clamping mechanism is installed at the end of the beam, the drill clamping mechanism being used to radially limit the movement of the drill rod.

[0006] With the above setup, when the hydraulic cylinder is in operation, the moving steel pipe can drive the front and rear sheaves to move synchronously. When the moving steel pipe moves forward, the front sheave pulls the first rope. Since the position of the beam remains unchanged, the first rope drives the rock drill assembly forward, ensuring that the rock drill assembly can approach the working point. When the moving steel pipe moves backward, the rear sheave pulls the second rope, which then drives the rock drill assembly backward. The front and rear sheaves allow the rock drill assembly to achieve twice the sliding distance of the moving steel pipe. The retractable clamping mechanism ensures that the anchor rod will not be obstructed from entering the hole during the process of pushing the anchor rod into the hole, thereby improving construction efficiency.

[0007] Preferably, a first mounting plate is installed at the front end of the movable steel pipe, and the front sheave is rotatably mounted on the first mounting plate; a second mounting plate is installed at the rear end of the movable steel pipe, and the rear sheave is rotatably mounted on the second mounting plate. This configuration allows the front and rear sheaves to be mounted on the movable steel pipe using the first and second mounting plates respectively. If either the front or rear sheave malfunctions, the first or second mounting plate can be disassembled and repaired individually, thereby reducing maintenance costs.

[0008] Preferably, the front sheave and the rear sheave are arranged perpendicularly. This arrangement optimizes the overall structural layout and saves space by using mutually perpendicular front and rear sheaves. In addition, it ensures that the tension of the first and second pull ropes acts on the same vertical line, preventing deflection torque during the advance process from causing the rock drill components to deviate.

[0009] Preferably, the first and second pull ropes are steel wire ropes. This configuration further improves the durability of the first and second pull ropes and extends the service life of the thruster.

[0010] Preferably, a slide rail is slidably installed within the mounting groove. The slide rail is fixedly connected to the movable steel pipe, with its front end fixedly connected to the first mounting plate and its rear end fixedly connected to the second mounting plate. This configuration allows the slide rail to cooperate with the mounting groove for support, improving the movement stability of the front and rear sheaves. When the movable steel pipe moves, it synchronously drives the slide rail to move axially along the mounting groove, preventing the first and second mounting plates from causing the movable steel pipe to shift due to their own weight, thereby increasing the service life of the propulsion cylinder.

[0011] Preferably, the beam is provided with a slide rail, and the rock drill assembly and the first mounting plate are slidably mounted on the slide rail. This arrangement, through a two-point cooperating limiting design, ensures that the first mounting plate and the rock drill assembly can slide stably on the slide rail, reducing the probability of the rock drill assembly deviating from the slide rail.

[0012] Preferably, the first mounting plate is provided with a first locking block, and the rock drill assembly is provided with a second locking block; the first locking block is used to limit the movement angle of the first mounting plate, and the second locking block is used to limit the movement angle of the rock drill assembly. This configuration allows the rock drill assembly and the first mounting plate to be stably mounted on the slide rail by the first and second locking blocks, preventing the rock drill assembly from shaking or detaching from the slide rail during movement.

[0013] Preferably, the clamping mechanism includes a base, a telescopic block, and a clamping head. The base is installed at the end of the beam, the telescopic block is telescopically installed on the base, and the clamping head is installed on the upper part of the telescopic block. With this configuration, after drilling is completed, the anchor bolt can be inserted using a pusher. The telescopic block retracts the clamping head into the base, effectively preventing collisions between the anchor bolt and the clamping head during insertion.

[0014] Preferably, the chuck head is provided with two cooperating jaws, which lock or unlock the drill rod by moving on their own. This configuration allows the two jaws to move towards each other and clamp the drill rod after drilling is completed, achieving threaded disassembly between the drill rod and the drill bit of the rock drill assembly.

[0015] Preferably, a front connecting plate and a rear connecting plate for sealing the mounting groove are respectively installed at the front and rear ends of the beam, and the base is fixedly installed on the front connecting plate. This configuration limits the movement range of the rock drill assembly through the front and rear connecting plates, preventing the rock drill assembly from falling off the slide rail; the clamping mechanism can be detachably installed at the end of the beam through the front connecting plate, allowing it to be disassembled individually if it malfunctions.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: This propeller can be installed on a low-profile trolley. The device is short and compact in structure. When the moving steel pipe moves forward, the first pull rope is pulled by the front pulley to move the rock drill assembly forward, ensuring that the rock drill assembly can get close to the working point. When the moving steel pipe moves backward, the rear pulley pulls the second pull rope to move the rock drill assembly backward. The front and rear pulleys can make the rock drill assembly slide twice the distance of the moving steel pipe.

[0017] This invention enables mechanized drilling with high-quality holes and a compact assembly. It allows for vertical drilling in most low-lying mine tunnels and leverages the long sliding distance of the rock drill components to drill deeper holes a second time. Furthermore, a pusher can be used to insert the anchor rod into the hole, reducing manual intervention. During the anchor rod insertion process, the head of the clamping mechanism is retractable, ensuring the anchor rod enters the hole without obstructing its movement and improving insertion efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the thruster in this application.

[0019] Figure 2 This is a schematic diagram of the exploded structure of the thruster in this application.

[0020] Figure 3 This is a schematic diagram of the installation structure of the propulsion cylinder in this application.

[0021] Figure 4 This is a schematic diagram of the installation structure of the front and rear rope pulleys in this application.

[0022] Figure 5 This is a schematic diagram of the rock drill assembly in this application.

[0023] Figure 6 This is a schematic diagram of the clamping mechanism in this application.

[0024] In the diagram: 1. Beam; 11. Mounting groove; 12. Slide rail; 100. Rock drill assembly; 101. First locking block; 2. Front sheave; 21. First pull rope; 22. Second locking block; 200. Propulsion cylinder; 201. Moving steel pipe; 3. Rear sheave; 31. Second pull rope; 300. First mounting plate; 4. Chip clamping mechanism; 41. Base; 42. Telescopic block; 43. Chip clamping head; 400. Second mounting plate; 5. Slide rail; 500. Front connecting plate; 501. Rear connecting plate. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] One aspect of this application provides a propeller for use on a low-profile anchor bolt trolley, one preferred embodiment of which is, for example... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the system includes a beam 1 and a rock drill assembly 100. The beam 1 has an installation groove 11, within which a propulsion cylinder 200 is fixedly installed. The propulsion cylinder 200 includes a movable steel pipe 201, which can slide within the installation groove 11 via its extension and retraction. A front sheave 2 and a rear sheave 3 are mounted on the movable steel pipe 201. A first pull rope 21 is mounted on the front sheave 2, with one end fixedly connected to the rock drill assembly 100 and the other end passing over the front sheave 2 and fixed to the beam 1. A second pull rope 31 is mounted on the rear sheave 3, with one end fixedly connected to the rock drill assembly 100 and the other end passing over the rear sheave 3 and fixed to the beam 1. When the hydraulic cylinder 200 is working, the moving steel pipe 201 can drive the front rope wheel 2 and the rear rope wheel 3 to move synchronously. When the moving steel pipe 201 moves forward, the front rope wheel 2 pulls the first pull rope 21. Since the position of the beam 1 remains unchanged, the first pull rope 21 drives the rock drill assembly 100 to move forward to ensure that the rock drill assembly 100 can get close to the working point. When the moving steel pipe 201 moves backward, the rear rope wheel 3 pulls the second pull rope 31, and then the second pull rope 31 drives the rock drill assembly 100 to move backward.

[0030] It should be noted that at present, there is no suitable equipment for anchor bolt support in low mine tunnels. In most cases, holes are drilled manually on the rock wall. The drilling process is dangerous, time-consuming and labor-intensive, and the holes produced are shallow and of low quality.

[0031] This application employs a rock drill assembly 100 for mechanical drilling. The rock drill assembly 100 is mounted on a low-profile trolley with a pusher device. Because the front sheave 2 and rear sheave 3 allow the rock drill assembly 100 to slide twice the distance of the moving steel pipe 201, the pusher can be designed to be shorter and more compact. Utilizing the long sliding distance of the rock drill, deeper holes can be drilled a second time. Furthermore, this device can also be used to push anchor bolts into the borehole during the anchor bolt insertion process, thereby improving overall construction efficiency.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, a drill rod (not shown) for drilling is fixedly installed on the rock drill assembly 100. A drill rod clamping mechanism 4 is provided at the end of the beam 1. During drilling, the drill rod passes through the clamping mechanism 4 and acts on the rock wall. In the initial stage of the rock drill assembly 100, the clamping mechanism 4 can provide a certain clamping force on the drill rod, helping to stabilize the drill rod and start drilling at the predetermined position, thereby improving the drilling success rate. Furthermore, the clamping mechanism 4 can extend and retract vertically. After drilling is completed, the clamping mechanism 4 can retract downwards; during the process of pushing the anchor rod into the hole, it will not hinder the anchor rod from entering the hole, thereby improving construction efficiency.

[0033] It should be noted that the main function of the clamping mechanism 4 in this application is to clamp the drill rod. During the operation of the rock drill assembly 100, the clamping mechanism 4 will not clamp the drill rod to ensure that the drill rod can rotate and vibrate at high speed. After the rock drill assembly 100 finishes working, the clamping mechanism 4 clamps the drill rod to prevent the drill rod from slipping.

[0034] In this embodiment, as Figure 4 As shown, a first mounting plate 300 is installed at the front end of the movable steel pipe 201, and the front sheave 2 is rotatably mounted on the first mounting plate 300; a second mounting plate 400 is installed at the rear end of the movable steel pipe 201, and the rear sheave 3 is rotatably mounted on the second mounting plate 400. The front sheave 2 and the rear sheave 3 can be installed on the movable steel pipe 201 through the first mounting plate 300 and the second mounting plate 400 respectively. If the front sheave 2 or the rear sheave 3 fails, the first mounting plate 300 or the second mounting plate 400 can be disassembled and repaired separately, thereby reducing maintenance costs.

[0035] Specifically, such as Figure 4 As shown, the front sheave 2 and the rear sheave 3 are arranged perpendicularly. This arrangement optimizes the overall structural layout and saves space by using the mutually perpendicular front sheave 2 and rear sheave 3. In addition, it ensures that the tension of the first pull rope 21 and the second pull rope 31 acts on the same vertical line, avoiding the deflection torque generated during the advancement process that would cause the rock drill assembly 100 to deviate.

[0036] Additionally, to further improve the service life of the thruster, the first pull rope 21 and the second pull rope 31 are designed as steel wire ropes to enhance their durability. Of course, those skilled in the art can replace the steel wire ropes with other ropes, as long as the first pull rope 21 and the second pull rope 31 possess high strength and wear resistance.

[0037] In this embodiment, as Figure 3 and Figure 4As shown, a slide rail 5 is slidably installed in the mounting groove 11. The slide rail 5 is fixedly connected to the moving steel pipe 201 to ensure that the slide rail 5 can move synchronously with the moving steel pipe 201. The front end of the slide rail 5 is fixedly connected to the first mounting plate 300, and the rear end of the slide rail 5 is fixedly connected to the second mounting plate 400. The side of the slide rail 5 can cooperate with the side of the mounting groove 11 for support, thereby improving the moving stability of the front rope pulley 2 and the rear rope pulley 3. When the moving steel pipe 201 moves, it will synchronously drive the slide rail 5 to move along the axial direction of the mounting groove 11, avoiding the first mounting plate 300 and the second mounting plate 400 from causing the moving steel pipe 201 to deviate due to their own weight, thereby improving the service life of the propulsion cylinder 200.

[0038] Furthermore, such as Figure 3 , Figure 4 and Figure 5 As shown, slide rails 12 are provided on both sides of the beam 1. The rock drill assembly 100 and the first mounting plate 300 are slidably installed on the slide rails 12. The slide 5 connects the rock drill assembly 100 and the first mounting plate 300 in one piece. By increasing the overall length, it can be ensured that the first mounting plate 300 and the rock drill assembly 100 can slide stably on the slide rails 12, reducing the probability of the rock drill assembly 100 deviating from the slide 5.

[0039] Specifically, such as Figure 1 and Figure 3 As shown, a first locking block 101 is provided on the first mounting plate 300, and a second locking block 22 is provided on the rock drill assembly 100. The first locking block 101 engages with the side of the slide rail 12, thereby limiting the movement angle of the first mounting plate 300. The second locking block 22 also engages with the side of the slide rail 12, thereby limiting the movement angle of the rock drill assembly 100. The first locking block 101 and the second locking block 22 stably mount the rock drill assembly 100 and the first mounting plate 300 onto the slide rail 12, preventing the rock drill assembly 100 from shaking or disengaging from the slide rail 12 during movement.

[0040] In this embodiment, as Figure 1 and Figure 6 As shown, the clamping mechanism 4 includes a base 41, a telescopic block 42, and a clamping head 43. The base 41 is fixedly installed at the end of the beam 1, the telescopic block 42 is telescopically installed inside the base 41, and the clamping head 43 is installed on the upper part of the telescopic block 42. After drilling is completed, the anchor rod can be inserted using a pusher. Before inserting the anchor rod, the clamping head 43 is first retracted into the base 41 using the telescopic block 42, which can effectively prevent the anchor rod from colliding with the clamping head 43 during insertion.

[0041] Specifically, such as Figure 6As shown, the chuck head 43 is equipped with two cooperating jaws, which lock or unlock the drill rod by moving on their own. When the rock drill assembly 100 is working, the two jaws move away from each other to ensure that the drill rod can rotate. When the rock drill assembly 100 stops working, the two jaws move towards each other and clamp the drill rod. The threads between the drill rod and the drill tail of the rock drill assembly 100 are disengaged by reversing the rock drill assembly 100.

[0042] Furthermore, such as Figure 1 and Figure 2 As shown, a front connecting plate 500 and a rear connecting plate 501 for sealing the mounting groove 11 are respectively installed at the front and rear ends of the beam 1. The base 41 is fixedly installed on the front connecting plate 500. When the clamping mechanism 4 malfunctions, it can be disassembled and repaired separately. In addition, the front connecting plate 500 and the rear connecting plate 501 can limit the movement range of the rock drill assembly 100 to prevent the rock drill assembly 100 from falling off the slide rail 12.

[0043] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A thruster for use on a low-profile rock bolt trolley, comprising a beam (1) and a rock drill assembly (100), characterized in that, The beam (1) is provided with an installation groove (11), and a propulsion cylinder (200) is installed in the installation groove (11). The propulsion cylinder (200) includes a movable moving steel pipe (201). A front rope wheel (2) and a rear rope wheel (3) are rotatably installed on the moving steel pipe (201). A first pull rope (21) is installed on the front rope wheel (2). One end of the first pull rope (21) is connected to the rock drill assembly (100), and the other end passes around the front rope wheel (2) and is fixed to the beam (1). A second pull rope (31) is installed on the rear rope wheel (3). One end of the second pull rope (31) is connected to the rock drill assembly (100), and the other end passes around the rear rope wheel (3) and is fixed to the beam (1). A drill rod is fixedly installed on the rock drill assembly (100). A vertically extendable drill clamping mechanism (4) is installed at the end of the beam (1). The drill clamping mechanism (4) is used to limit the radial movement of the drill rod.

2. The propeller for use on a low-profile anchor bolt trolley as described in claim 1, characterized in that, The front end of the movable steel pipe (201) is equipped with a first mounting plate (300), and the front rope wheel (2) is rotatably mounted on the first mounting plate (300); the rear end of the movable steel pipe (201) is equipped with a second mounting plate (400), and the rear rope wheel (3) is rotatably mounted on the second mounting plate (400).

3. The propeller for use on a low-profile anchor bolt trolley as described in claim 1, characterized in that, The front sheave (2) is perpendicular to the rear sheave (3).

4. The propeller for use on a low-profile anchor bolt trolley as described in claim 1, characterized in that, The first pull rope (21) and the second pull rope (31) are steel wire ropes.

5. The propeller for use on a low-profile anchor bolt trolley as described in claim 2, characterized in that, A slide rail (5) is slidably installed in the mounting groove (11). The slide rail (5) is fixedly connected to the movable steel pipe (201). The front end of the slide rail (5) is fixedly connected to the first mounting plate (300), and the rear end of the slide rail (5) is fixedly connected to the second mounting plate (400).

6. The propeller for use on a low-profile anchor bolt trolley as described in claim 5, characterized in that, A slide rail (12) is provided on the beam (1), and the rock drill assembly (100) and the first mounting plate (300) are slidably mounted on the slide rail (12).

7. The propeller for use on a low-profile anchor bolt trolley as described in claim 6, characterized in that, The first mounting plate (300) is provided with a first locking block (101), and the rock drill assembly (100) is provided with a second locking block (22); the first locking block (101) is used to limit the movement angle of the first mounting plate (300), and the second locking block (22) is used to limit the movement angle of the rock drill assembly (100).

8. The propeller for use on a low-profile anchor bolt trolley as described in claim 1, characterized in that, The clamping mechanism (4) includes a base (41), a telescopic block (42), and a clamping head (43). The base (41) is installed at the end of the beam (1), the telescopic block (42) is telescopically installed on the base (41), and the clamping head (43) is installed on the upper part of the telescopic block (42).

9. The propeller for use on a low-profile anchor bolt trolley as described in claim 8, characterized in that, The clamping head (43) is provided with two cooperating jaws, which lock or unlock the rod by moving themselves.

10. The propeller for use on a low-profile anchor bolt trolley as described in claim 9, characterized in that, The front and rear ends of the beam (1) are respectively equipped with a front connecting plate (500) and a rear connecting plate (501) for sealing the mounting groove (11), and the base (41) is fixedly installed on the front connecting plate (500).

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