Pressurizing and lifting device of full-automatic rotary drilling machine

Abstract

The utility model discloses a pressurization lifting device of a full-automatic rotary drilling machine, which comprises a drilling frame, an upper fixed pulley and a lower fixed pulley, the rotary power head is used for being connected with the drilling device; the pressurizing lifting oil cylinder comprises a piston rod and a cylinder body, the upper and lower ends of the piston rod are respectively fixed on the drilling frame, the cylinder body can vertically slide along the piston rod, and the upper and lower ends of the cylinder body are respectively provided with an upper movable pulley and a lower movable pulley; the chain winding comprises an upper plate chain and a lower plate chain, the upper plate chain bypasses the upper fixed pulley and the upper movable pulley, two ends of the upper plate chain are respectively connected with the upper end of the rotary power head and the upper end of the drilling frame, the lower plate chain bypasses the lower fixed pulley and the lower movable pulley, and two ends of the lower plate chain are respectively connected with the lower end of the rotary power head and the lower end of the drilling frame; wherein the lower plate chain is connected with the drilling frame through a first chain tensioning mechanism. The pressurization lifting device of the full-automatic rotary drilling machine is high in stability and capable of accurately controlling the position of the rotary power head.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a pressurizing and lifting device for a full-automatic rotary drilling rig. Background Art

[0002] As a key subsystem of the drilling system of a rotary drilling rig, the pressurizing and guiding capabilities of the pressurizing and lifting device directly determine the drilling performance of the rig. At present, the hole depth formed by a single drill pipe of a rotary drilling rig is generally more than 8 meters, and for a high drill rig model, the maximum hole depth of a single drill pipe can reach 21 m. The feed stroke of the corresponding pressurizing and lifting device is mostly 9 - 22 meters, and the pressurizing and lifting device is characterized by a long stroke and a large load. On the other hand, a full-automatic rotary drilling rig can meet the requirements of intelligent mine construction and can significantly improve the comprehensive operation efficiency of the rotary drilling rig, which is the development trend of modern rotary drilling rigs.

[0003] In the prior art, the pressurizing and lifting device usually adopts an oil cylinder driving method to obtain a large enough propulsion force, and cooperates with a wire rope winding or a roller chain winding to reduce the oil cylinder stroke. The main existing problems are as follows: ①Common pressurizing oil cylinders mostly adopt the movement mode of fixing the oil cylinder body and moving the piston rod. Under the condition of a long stroke, due to poor end support conditions, there are problems of poor guiding and stability during operation. ②Common speed-increasing windings can increase the propulsion stroke of the rotary power head of the drill tool to multiple times of the oil cylinder stroke. Due to the space limitation of the drill rig of the rotary drilling rig, a 2-fold speed-increasing winding is adopted. The winding commonly adopts a wire rope winding or a roller chain winding. For the wire rope winding, it has the problems of poor rigidity and large overall length change, and frequent length tensioning maintenance is required, which is not conducive to a full-automatic operation system that needs to accurately control the movement position of the rotary power head. For the roller chain winding, it relies on a toothed sprocket drive, and tooth skipping may occur after the chain and sprocket are worn, and the system stability during operation is poor. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a pressurizing and lifting device for a full-automatic rotary drilling rig, which has high stability and can accurately control the position of the rotary power head.

[0005] The pressurizing and lifting device for a full-automatic rotary drilling rig according to an embodiment of the utility model includes:

[0006] A drill rig, with an upper fixed pulley and a lower fixed pulley provided at the upper and lower ends respectively;

[0007] A rotary power head for connecting a drilling device;

[0008] A pressurizing and lifting oil cylinder, including a piston rod and a cylinder body, the upper and lower ends of the piston rod are respectively fixed to the drill rig, the cylinder body can slide vertically along the piston rod, and an upper movable pulley and a lower movable pulley are respectively provided at the upper and lower ends of the cylinder body;

[0009] The chain winding includes an upper plate chain and a lower plate chain. The upper plate chain bypasses the upper fixed pulley and the upper movable pulley, and both ends of the upper plate chain are respectively connected to the upper end of the rotary power head and the upper end of the drill rig. The lower plate chain bypasses the lower fixed pulley and the lower movable pulley, and both ends of the lower plate chain are respectively connected to the lower end of the rotary power head and the lower end of the drill rig. Wherein, the lower plate chain is connected to the drill rig through a first chain tensioning mechanism.

[0010] The pressure application and lifting device of the full-automatic cone drill according to the embodiment of the present invention has at least the following beneficial effects:

[0011] By setting the pressure application and lifting oil cylinder as a double-rod double-acting oil cylinder, the upper and lower ends of its piston rod are respectively fixed on the drill rig and connected to the drill rig as a whole, while the vertically movable part is the cylinder block. In this way, the overall rigidity of the drill rig can be increased, the stress conditions of the pressure application and lifting oil cylinder under long strokes can be improved, the buckling stability of the piston rod can be enhanced, and the structural stability is high. Therefore, the drill rig and the piston rod can adopt smaller design cross-sections, reducing the size and weight of the equipment. In addition, the chain winding adopts a plate chain with strong rigidity, which can reduce the plastic deformation of the chain under long-term tensile loads. Under the condition of overall length change, combined with the first chain tensioning mechanism at the bottom, the working length of the chain can be ensured to be maintained within the set range, ensuring stable power output. The relative position of the rotary power head connected by the chain winding on the drill rig can be accurately controlled, improving the working stability and reliability during full-automatic control. Furthermore, by setting the upper movable pulley, the lower movable pulley, the upper fixed pulley, and the lower fixed pulley to cooperate with the upper plate chain and the lower plate chain, the above pulleys are all grooved pulleys without chain teeth structures, which can eliminate the uneven force during chain winding and the phenomenon of tooth skipping during the working process. The grooved pulleys with smaller diameters can meet the winding size requirements of the chain, making full use of the stroke of the pressure application and lifting oil cylinder. Under the condition of the same advancing stroke of the rotary power head, the stroke of the pressure application and lifting oil cylinder is smaller, and the height of the drill rig is smaller.

[0012] According to some embodiments of the present invention, the upper plate chain is connected to the drill rig through a second chain tensioning mechanism.

[0013] According to some embodiments of the present invention, the second chain tensioning mechanism includes a tensioning screw and an adjusting nut. The tensioning screw is vertically arranged at the top of the drill rig, and the bottom end of the tensioning screw is connected to the upper plate chain. The adjusting nut is threadedly connected to the tensioning screw and abuts against the upper end face of the drill rig.

[0014] According to some embodiments of the present invention, a washer is sleeved on the tensioning screw. The washer is located below the adjusting nut, and the washer abuts against the upper end face of the drill rig.

[0015] According to some embodiments of the present utility model, a guiding structure is provided between the drill tower and the cylinder block, and the guiding structure is used to define the vertical sliding of the cylinder block along the drill tower.

[0016] According to some embodiments of the present utility model, the guiding structure includes a guide rail and a guide block. The guide rail is vertically arranged on the drill tower, and the guide block is arranged on the cylinder block and is in vertical sliding fit with the guide rail.

[0017] According to some embodiments of the present utility model, the first chain tensioning mechanism includes a tensioning oil cylinder. The fixed end of the tensioning oil cylinder is connected to the drill tower, and the telescopic end of the tensioning oil cylinder is connected to the lower plate chain.

[0018] According to some embodiments of the present utility model, a vertically distributed accommodation space is defined inside the drill tower, and at least part of the rotary power head, the pressurizing and lifting oil cylinder, and the chain winding are located inside the accommodation space.

[0019] According to some embodiments of the present utility model, there are two chain windings, which are respectively located on opposite sides of the pressurizing and lifting oil cylinder.

[0020] According to some embodiments of the present utility model, vertically extending slide rails are respectively arranged on the opposite horizontal sides of the drill tower. The rotary power head is provided with sliders corresponding to the slide rails, and the sliders are in vertical sliding fit with the slide rails.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0022] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0023] Figure 1 is an axonometric schematic diagram of the pressurizing and lifting device of the full-automatic cone drill of the embodiment of the present utility model;

[0024] Figure 2 is a side schematic diagram of the pressurizing and lifting device of the full-automatic cone drill of the embodiment of the present utility model;

[0025] Figure 3 is a schematic diagram of the installation structure of the chain winding of the embodiment of the present utility model;

[0026] Figure 4 is a schematic diagram of the structure of the chain winding and the first chain tensioning mechanism of the embodiment of the present utility model;

[0027] Figure 5 is the embodiment of the present utility model Figure 1 magnified schematic diagram at position A in

[0028] Figure 6 is the enlarged schematic view of part B in the embodiment of the present utility model; Figure 1 in the figure;

[0029] Figure 7 is the enlarged schematic view of part C in the embodiment of the present utility model; Figure 1 in the figure.

[0030] Reference numerals in the attached drawings:

[0031] drilling rig 100, upper fixed pulley 110, lower fixed pulley 120, guide rail 130, slide rail 140;

[0032] rotary power head 200, slider 210;

[0033] pressure boosting and lifting oil cylinder 300, piston rod 310, cylinder block 320, upper movable pulley 330, lower movable pulley 340, guide block 350;

[0034] upper plate chain 400, lower plate chain 410;

[0035] first chain tensioning mechanism 500;

[0036] second chain tensioning mechanism 600, tensioning screw 610, adjusting nut 620, washer 630. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc., is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0039] In the description of the present utility model, "a plurality of" means more than two. If the first and second are described, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0040] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0041] Referring to Figures 1 to 7 As shown, a pressure application and lifting device of a full-automatic roller drill of an embodiment of the present utility model includes: a drill rig 100, a rotary power head 200, and a pressure application and lifting oil cylinder 300.

[0042] Upper fixed pulleys 110 and lower fixed pulleys 120 are respectively arranged at the upper and lower ends of the drill rig 100. Specifically, pulley supports are arranged at the upper and lower ends of the drill rig 100 to respectively install the upper fixed pulley 110 and the lower fixed pulley 120. The rotation axes of the upper fixed pulley 110 and the lower fixed pulley 120 are parallel to each other and are both horizontally distributed. The upper fixed pulley 110 and the lower fixed pulley 120 are grooved pulleys without chain teeth structures, that is, annular grooves are provided on the outer peripheral walls of the upper fixed pulley 110 and the lower fixed pulley 120.

[0043] The rotary power head 200 is used to connect a drilling device. Among them, a power output end is arranged at the bottom of the rotary power head 200 to connect the drilling device.

[0044] The pressure application and lifting oil cylinder 300 includes a piston rod 310 and a cylinder block 320. The pressure application and lifting oil cylinder 300 is a double-piston-rod double-acting oil cylinder. The upper and lower ends of its piston rod 310 are respectively fixed to the drill rig 100, and its cylinder block 320 can slide vertically along the piston rod 310. Upper moving pulleys 330 and lower moving pulleys 340 are respectively arranged at the upper and lower ends of the cylinder block 320. Specifically, pulley supports are arranged at the upper and lower ends of the cylinder block 320 to respectively install the upper moving pulley 330 and the lower moving pulley 340. The rotation axes of the upper moving pulley 330 and the lower moving pulley 340 are parallel to each other and are both horizontally distributed. The upper moving pulley 330 and the lower moving pulley 340 are grooved pulleys without chain teeth structures, that is, the upper moving pulley 330 and the lower moving pulley 340 adopt the same structural form as the upper fixed pulley 110 and the lower fixed pulley 120.

[0045] The chain winding includes an upper plate chain 400 and a lower plate chain 410. The upper plate chain 400 bypasses the upper fixed pulley 110 and the upper movable pulley 330, and both ends of the upper plate chain 400 are respectively connected to the upper end of the rotary power head 200 and the upper end of the drill rig 100. The lower plate chain 410 bypasses the lower fixed pulley 120 and the lower movable pulley 340, and both ends of the lower plate chain 410 are respectively connected to the lower end of the rotary power head 200 and the lower end of the drill rig 100. In this way, when the cylinder block 320 moves vertically along the piston rod 310, it can drive the upper movable pulley 330 and the lower movable pulley 340 to move vertically synchronously, so as to drive the rotary power head 200 to move vertically through the upper plate chain 400 and the lower plate chain 410. Among them, the lower plate chain 410 is connected to the drill rig 100 through the first chain tensioning mechanism 500. By setting the first chain tensioning mechanism 500, the tightness of the lower plate chain 410 can be adjusted, and during long-term operation, the working length of the lower plate chain 410 can be ensured to be maintained within the set range, ensuring stable power output.

[0046] In the pressure application and lifting device of the full-automatic cone drill of the embodiment of the present utility model, by setting the pressure application and lifting oil cylinder 300 as a double-piston-rod double-acting oil cylinder, the upper and lower ends of its piston rod 310 are respectively fixed on the drill rig 100 and connected to the drill rig 100 as a whole, while the vertically movable component is the cylinder block 320. In this way, the overall rigidity of the drill rig 100 can be increased, the stress condition of the pressure application and lifting oil cylinder 300 under long stroke can be improved, the buckling stability of the piston rod 310 can be improved, and the structural stability is high. Therefore, the drill rig 100 and the piston rod 310 can adopt a smaller design cross-section, reducing the size and weight of the equipment. In addition, the chain winding adopts a plate chain with strong rigidity, which can reduce the plastic deformation of the chain under long-term tensile load. Under the change of the overall length, combined with the first chain tensioning mechanism 500 at the bottom, the working length of the chain can be ensured to be maintained within the set range, ensuring stable power output. The relative position of the rotary power head 200 connected by the chain winding on the drill rig 100 can be accurately controlled, improving the working stability and reliability during full-automatic control. Furthermore, by setting the upper movable pulley 330, the lower movable pulley 340, the upper fixed pulley 110, the lower fixed pulley 120 to cooperate with the upper plate chain 400 and the lower plate chain 410, the above-mentioned pulleys are all grooved pulleys without chain teeth structures, which can eliminate the uneven force during chain winding and the phenomenon of tooth skipping during the working process. The grooved pulley can meet the winding size requirements of the chain with a smaller diameter, making full use of the stroke of the pressure application and lifting oil cylinder 300. Under the same advancing stroke of the rotary power head 200, the stroke of the pressure application and lifting oil cylinder 300 is smaller, and the height of the drill rig 100 is smaller.

[0047] In some specific embodiments of the present utility model, such as Figure 1 and Figure 4As shown, the first chain tensioning mechanism 500 includes a tensioning oil cylinder, the tensioning load of which is adjusted by a hydraulic system. The fixed end of the tensioning oil cylinder is connected to the drill rig 100, and the telescopic end of the tensioning oil cylinder is connected to the lower plate chain 410. By telescoping the tensioning oil cylinder, the tightness of the chain can be dynamically adjusted. By limiting the pressure of the hydraulic system, the maximum tensile load of the chain can be restricted, effectively improving the chain life and reducing chain wear, and reducing the maintenance work on the chain length. At the same time, under the action of impact vibration, for the instant when the set load is exceeded, the chain length can be relaxed, further improving the system stability under impact vibration load.

[0048] Referring to Figures 1 to 4 As shown, in some embodiments of the present invention, the upper plate chain 400 is connected to the drill rig 100 through a second chain tensioning mechanism 600. By providing the second chain tensioning mechanism 600, the tightness of the upper plate chain 400 can be adjusted. Specifically, the second chain tensioning mechanism 600 includes a tensioning screw 610 and an adjusting nut 620. The tensioning screw 610 is vertically provided at the top of the drill rig 100, and the bottom end of the tensioning screw 610 is connected to the upper plate chain 400. The adjusting nut 620 is threadedly connected to the tensioning screw 610 and abuts against the upper end face of the drill rig 100. By screwing the adjusting nut 620, the tensioning screw 610 can move vertically, thereby adjusting the tightness of the upper plate chain 400. Obviously, the second chain tensioning mechanism 600 adopts a manual adjustment structure form. When the equipment stops running, it can be adjusted and maintained through the second chain tensioning mechanism 600 to ensure the accuracy of the vertical movement position of the rotary power head 200 when the subsequent equipment works. It can be imagined that in order to prevent the upper plate chain 400 from being twisted and deformed during tensioning adjustment, a limiting structure can be provided to limit the vertical movement of the tensioning screw 610 only. The specific form of the limiting structure can be various, which is a conventional technical means, so it will not be specifically described here. In a further embodiment, a washer 630 is sleeved on the tensioning screw 610. The washer 630 is located below the adjusting nut 620, and the washer 630 abuts against the upper end face of the drill rig 100, that is, the adjusting nut 620 abuts against the upper end face of the drill rig 100 through the washer 630 to prevent damage to the drill rig 100 when screwing the adjusting nut 620. It can be understood that in order to improve the structural strength, multiple adjusting nuts 620 can be provided.

[0049] Referring to Figure 1 and Figure 2As shown, in some embodiments of the present utility model, a guiding structure is provided between the drill rig 100 and the cylinder block 320. The guiding structure is used to define the vertical sliding of the cylinder block 320 along the drill rig 100, thereby preventing the cylinder block 320 from twisting, eliminating the deflection and bending of the pressurizing and lifting oil cylinder 300 under the pressurizing and lifting load and the vibration load, and increasing the stability during the movement process. Specifically, the guiding structure includes a guide rail 130 and a guide block 350. The guide rail 130 is vertically arranged on the drill rig 100, and the guide block 350 is arranged on the cylinder block 320 and is in vertical sliding fit with the guide rail 130 to achieve the vertical sliding guidance of the cylinder block 320.

[0050] Referring to Figure 1 As shown, in some embodiments of the present utility model, a vertically distributed accommodation space is defined within the drill rig 100. The rotary power head 200, the pressurizing and lifting oil cylinder 300, and the chain winding are all at least partially located within the accommodation space. In this way, the overall structural compactness of the equipment is ensured, and the space utilization rate is guaranteed.

[0051] Referring to Figure 1 and Figure 4 As shown, in some embodiments of the present utility model, there are two chain windings, which are respectively located on the opposite sides of the pressurizing and lifting oil cylinder 300. By providing two chain windings, the stability of the vertical movement of the rotary power head 200 is ensured; it should be noted that a set of upper moving pulleys 330, lower moving pulleys 340, upper fixed pulleys 110, and lower fixed pulleys 120 are respectively provided for the two chain windings.

[0052] Referring to Figure 1 and Figure 5 As shown, in some embodiments of the present utility model, vertically extending sliding rails 140 are respectively provided on the horizontal opposite sides of the drill rig 100. The rotary power head 200 is provided with sliders 210 corresponding to the sliding rails 140. The sliders 210 are in vertical sliding fit with the sliding rails 140 to provide guidance for the vertical sliding of the rotary power head 200 and ensure the smooth lifting and lowering of the rotary power head 200.

[0053] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0054] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant technical field.

Claims

1. A pressurizing and lifting device for a fully automatic rotary drill, characterized in that: include: The drilling frame (100) is provided with an upper fixed pulley (110) and a lower fixed pulley (120) at the upper and lower ends respectively; A rotary power head (200) for connecting to a drilling device; A pressurized lifting oil cylinder (300) comprises a piston rod (310) and a cylinder body (320), wherein the upper and lower ends of the piston rod (310) are respectively fixed to the drilling frame (100), and the cylinder body (320) can slide vertically along the piston rod (310), and the upper and lower ends of the cylinder body (320) are respectively provided with an upper movable pulley (330) and a lower movable pulley (340); The chain winding comprises an upper plate chain (400) and a lower plate chain (410), wherein the upper plate chain (400) passes around the upper fixed pulley (110) and the upper movable pulley (330), and the two ends of the upper plate chain (400) are respectively connected to the upper end of the rotary power head (200) and the upper end of the drilling rig (100), and the lower plate chain (410) passes around the lower fixed pulley (120) and the lower movable pulley (340), and the two ends of the lower plate chain (410) are respectively connected to the lower end of the rotary power head (200) and the lower end of the drilling rig (100); wherein the lower plate chain (410) is connected to the drilling rig (100) via a first chain tensioning mechanism (500).

2. The pressurizing and lifting device for a fully automatic rotary drill according to claim 1 is characterized in that: The upper plate chain (400) is connected to the drilling frame (100) via a second chain tensioning mechanism (600).

3. The pressurizing and lifting device for a fully automatic rotary drill according to claim 2 is characterized in that: The second chain tensioning mechanism (600) comprises a tensioning screw (610) and an adjusting nut (620); the tensioning screw (610) is vertically arranged at the top of the drilling frame (100), and the bottom end of the tensioning screw (610) is connected to the upper plate chain (400); the adjusting nut (620) is threadedly connected to the tensioning screw (610) and abuts against the upper end surface of the drilling frame (100).

4. The pressurizing and lifting device for a fully automatic rotary drill according to claim 3 is characterized in that: A washer (630) is sleeved on the tensioning screw (610), and the washer (630) is located at the lower side of the adjusting nut (620). The washer (630) abuts against the upper end surface of the drilling frame (100).

5. The pressurizing and lifting device for a fully automatic rotary drill according to claim 1 is characterized in that: A guide structure is provided between the drilling frame (100) and the cylinder body (320), and the guide structure is used to limit the cylinder body (320) to slide vertically along the drilling frame (100).

6. The pressurizing and lifting device for a fully automatic rotary drill according to claim 5 is characterized in that: The guide structure comprises a guide rail (130) and a guide block (350); the guide rail (130) is vertically arranged on the drilling frame (100); and the guide block (350) is arranged on the cylinder body (320) and vertically slidably cooperates with the guide rail (130).

7. The pressurizing and lifting device for a fully automatic rotary drill according to claim 1 is characterized in that: The first chain tensioning mechanism (500) comprises a tensioning oil cylinder, a fixed end of the tensioning oil cylinder is connected to the drilling frame (100), and a telescopic end of the tensioning oil cylinder is connected to the lower plate chain (410).

8. The pressurizing and lifting device for a fully automatic rotary drill according to claim 1 is characterized in that: A vertically distributed accommodation space is defined in the drilling frame (100), and the rotary power head (200), the pressurized lifting cylinder (300) and the chain winding are at least partially located in the accommodation space.

9. The pressurizing and lifting device for a fully automatic rotary drill according to claim 1, characterized in that: The chain windings are provided with two, which are respectively located on opposite sides of the pressurized lifting cylinder (300).

10. The pressurizing and lifting device for a fully automatic rotary drill according to claim 1, characterized in that: The horizontally opposite sides of the drilling frame (100) are respectively provided with vertically extending slide rails (140), and the rotary power head (200) is provided with a sliding block (210) corresponding to the sliding rail (140), and the sliding block (210) is vertically slidably matched with the sliding rail (140).

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