Tooth wheel assembly convenient to maintain

Abstract

The cone assembly convenient to maintain comprises a drill cylinder and a plurality of cone assemblies, an annular cutter head is arranged on the outer side of the bottom end of the drill cylinder, a plurality of installation grooves are formed in the annular cutter head, and clamping grooves are formed in the portions, on the two opposite sides of the installation grooves, of the annular cutter head. The multiple cone assemblies are installed in the multiple installation grooves correspondingly, and the multiple cone assemblies are detachably connected with the annular cutter head. According to the technical scheme, when the cone assembly is abraded, the cone assembly is taken out of the mounting groove, so that the cone assembly can be conveniently and quickly replaced or maintained, the maintenance cost is reduced, and the working efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a cone assembly which is easy to maintain. Background Art

[0002] A rotary drilling rig is a construction machine for drilling holes. Its principle is to rely on the power head to drive the drill rod, realize the rotation of the drill bit to cut the rock and soil, and then lift it to the outside of the hole to unload the soil, and repeat the cycle until the hole is formed. Currently, most rotary drilling rigs use a single drill bit to break rocks for drilling. Commonly used drill bits include bucket tooth drill bits, pick drill bits and roller drill bits.

[0003] During construction in rock formations, a roller drill bit is required to perform annular cutting of the rock formation. The rotation of the revolving roller of the drill bit causes grinding and hammering of the rock. After the annular cutting is completed, the drill core is removed. If the drill core cannot be removed, a double-bottom sand bucket pick drill bit is required to perform full-section cutting of the drill core to remove the drill cuttings. The main working principle of the roller is to grind and hammer the rock formation through the rotation of the revolving roller of the drill bit.

[0004] The existing rotary drilling rig drill bits used in rock formations have cones fixed to the drill barrel by welding. The technical defect of this drill bit is that when the cone teeth are worn or broken, they need to be repaired and replaced by cutting or other methods that destroy the connection structure, which is not only difficult to operate, but also has high maintenance costs. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a repairable gear assembly to solve the problem in the prior art that when the gear teeth are worn or broken, they need to be repaired and replaced by cutting or other means of destroying the connection structure.

[0006] The utility model is realized by the following technical solutions:

[0007] A maintenance-friendly roller assembly comprises a drill barrel and a plurality of roller assemblies. An annular cutter disc is arranged on the outer side of the bottom end of the drill barrel. The annular cutter disc is provided with a plurality of mounting grooves. The annular cutter discs on opposite sides of the plurality of mounting grooves are provided with clamping grooves. The plurality of roller assemblies are respectively installed in the plurality of mounting grooves. The plurality of roller assemblies are detachably connected to the annular cutter disc.

[0008] Furthermore, the gear assembly includes a gear, a tooth palm and a mounting block, one end of the tooth palm is rotatably connected to the gear, and the other end is fixedly connected to the mounting block, the mounting block is adapted to the mounting groove, and clamping blocks are connected to the opposite sides of the mounting block, the clamping blocks are adapted to the clamping slot, and matching threaded holes are provided on the annular cutter disc and the clamping slot, the inner threads of the threaded holes are matched with bolts, and nuts are connected to the tops of the bolts.

[0009] Furthermore, it also includes an anti-loosening component, which is installed outside the annular cutter disc and is used to prevent the bolts on the annular cutter disc from loosening.

[0010] Furthermore, the anti-loosening assembly includes a first connecting rod, a return spring and a second connecting rod. The tail end of the first connecting rod is fixedly connected to the top end of the second connecting rod. The first connecting rod and the second connecting rod are slidably matched on the annular cutter disc. An active cavity is opened inside the annular cutter disc. The tail end of the first connecting rod is located in the active cavity. The return spring is sleeved on the first connecting rod. The two ends of the return spring are respectively connected to the top surface of the second connecting rod and the top surface of the inner wall of the active cavity. The first connecting rod and the second connecting rod can slide in a direction close to or away from the nut.

[0011] Furthermore, a mounting hole is provided on the top surface of the annular cutter disc, the mounting hole is located above the threaded hole, the mounting hole is matched with the nut, and a connecting hole matched with the second connecting rod is provided on the side of the nut.

[0012] Furthermore, a pick drill assembly is also provided on the bottom surface of the annular cutter disc, and the pick drill assembly is detachably connected to the bottom surface of the annular cutter disc. The pick drill assembly includes a mounting tube and a pick drill bit. The inner wall of the mounting tube is provided with an internal thread. One end of the pick drill bit is a threaded rod, which is inserted into the mounting tube and connected to the mounting tube through threaded fitting. A screw is provided in the gap between the pick drill bit and the mounting tube.

[0013] Furthermore, a slag guide bar is arranged outside the drill barrel. The slag guide bar is a spiral structure wound around the outside of the drill barrel. An opening is arranged on the annular cutter head. A slag collecting plate is fixedly connected to one side of the opening. The upper end of the slag collecting plate is connected to one end of the slag guide bar.

[0014] The beneficial effects of the utility model are:

[0015] The easy-to-maintain cone assembly can be taken out of the mounting groove when the cone assembly is worn, so that the cone assembly can be quickly replaced or repaired, thereby reducing maintenance costs and improving work efficiency.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of the utility model (first viewing angle);

[0018] Figure 2 It is a three-dimensional diagram of the utility model (second viewing angle);

[0019] Figure 3 It is an exploded view of the annular cutter disc and the cone assembly of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the anti-loosening component of the utility model.

[0021] In the figure:

[0022] 1. Drill barrel; 2. Annular cutter head; 3. Connector;

[0023] 4. Gear assembly; 401. Gear; 402. Gear palm; 403. Mounting block;

[0024] 5. Mounting slot; 6. Card slot; 7. Card block; 8. Threaded hole; 9. Mounting hole; 10. Bolt; 11. Nut;

[0025] 12. Anti-loosening assembly; 1201. First connecting rod; 1202. Second connecting rod; 1203. Return spring; 1204. Active cavity; 1205. Connecting hole;

[0026] 13. pick drill assembly; 1301. mounting tube; 1302. pick drill bit; 1303. screw;

[0027] 14. Slag guide bar; 15. Slag collecting plate; 16. Opening; 17. Air vent. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0033] See also Figure 1-4 The utility model provides a technical solution: a maintenance-friendly roller assembly, comprising a drill tube 1 and a plurality of roller assemblies 4, an annular cutter disc 2 is arranged on the outer side of the bottom end of the drill tube 1, a plurality of mounting grooves 5 are arranged on the annular cutter disc 2, a plurality of mounting grooves 5 are arranged on the annular cutter disc 2 on both sides opposite to each other, a plurality of the roller assemblies 4 are respectively installed in the plurality of the mounting grooves 5, and a plurality of the roller assemblies 4 are detachably connected to the annular cutter disc 2.

[0034] In this solution, the drill barrel 1 is a cylindrical structure as a whole, with a connecting head 3 at the top of the drill barrel 1 and an air vent 17 on the side. The air vent 17 is used to prevent the drill barrel 1 from being over-pressured during the drilling process and can effectively release the excessive pressure in the barrel without causing damage or deformation to the barrel body; the two ends of a number of gear assemblies 4 are respectively connected to the slots 6.

[0035] When in use, the connecting head 3 at the top of the drill barrel 1 is connected to the square head of the drill rod on the rotary drilling rig. During installation, the square head of the drill rod is inserted into the connecting head 3. When it reaches the specified position, the pin is inserted and fixed to achieve installation and connection (the rotary drilling rig, the square head of the drill rod and the pin are all prior art, so they are not shown in the drawings of this application, and will not be described in detail in this application. Please refer to the patent No. 202220952616.9). The rotary drilling rig controls the rotation of the drill rod to drive the drill barrel 1 and the cone assembly 4 to rotate and perform annular cutting of the rock formation. When the cone assembly 4 is worn, the cone assembly 4 is removed from the installation groove 5, which is convenient for quick replacement or maintenance of the cone assembly 4, which not only reduces maintenance costs but also improves work efficiency.

[0036] In this embodiment: the gear assembly 4 includes a gear 401, a tooth palm 402 and a mounting block 403, one end of the tooth palm 402 is rotatably connected to the gear 401, and the other end is fixedly connected to the mounting block 403, the mounting block 403 is adapted to the mounting groove 5, and the mounting block 403 is connected to the opposite sides with a clamping block 7, the clamping block 7 is adapted to the clamping groove 6, and the annular cutter disc 2 and the clamping groove 6 are provided with matching threaded holes 8, the inner thread of the threaded hole 8 is matched with a bolt 10, and the top of the bolt 10 is connected with a nut 11.

[0037] When installing the gear assembly 4, place the mounting block 403 in the mounting groove 5, and slide the clamping blocks 7 at both ends of the mounting block 403 into the clamping grooves 6 on both sides of the inner wall of the mounting groove 5, until the annular cutter disc 2 is aligned with the threaded hole 8 on the clamping groove 6, and the threaded part of the bolt 10 is matched with the threaded hole 8 on the annular cutter disc. By rotating the nut 11, the bolt 10 is gradually penetrated into the threaded hole 8 to complete the installation and fixation of the gear assembly 4.

[0038] In this embodiment, an anti-loosening component 12 is also included. The anti-loosening component 12 is installed outside the annular cutter disc 2. The anti-loosening component 12 is used to prevent the bolts 10 from loosening on the annular cutter disc 2.

[0039] Since the gear assembly 4 rotates at high speed during operation, the bolt 10 may be easily loosened due to vibration, thereby causing the gear assembly 4 to loosen on the annular cutter disc 2. The gear assembly 4 working in a loose state is prone to wear. Therefore, the bolt 10 is fixed to the annular cutter disc 2 through the anti-loosening assembly 12 to prevent the bolt 10 from loosening and affecting the operation of the gear assembly 4.

[0040] In this embodiment: the anti-loosening component 12 includes a first connecting rod 1201, a reset spring 1203 and a second connecting rod 1202. The tail end of the first connecting rod 1201 is fixedly connected to the top end of the second connecting rod 1202. The first connecting rod 1201 and the second connecting rod 1202 are slidably matched on the annular cutter disc 2. An active cavity 1204 is provided inside the annular cutter disc 2. The tail end of the first connecting rod 1201 is located in the active cavity 1204. The reset spring 1203 is sleeved on the first connecting rod 1201. The two ends of the reset spring 1203 are respectively connected to the top surface of the second connecting rod 1202 and the top surface of the inner wall of the active cavity 1204. The first connecting rod 1201 and the second connecting rod 1202 can slide in a direction close to or away from the nut 11.

[0041] In this solution, a fixing block is connected to the head end of the first connecting rod 1201 , and the first connecting rod 1201 and the second connecting rod 1202 can be controlled to slide in a direction close to or away from the nut 11 by holding the fixing block.

[0042] When the gear assembly 4 is fixed to the annular cutter disc 2 by the bolt 10, hold the fixing block and pull it outward to make the first connecting rod 1201 and the second connecting rod 1202 slide in the direction away from the nut 11, and the reset spring 1203 changes from a freely extended state to a compressed state until the tail end of the second connecting rod 1202 is retracted into the inner wall of the annular cutter disc 2. When the bolt 10 gradually penetrates into the threaded hole 8 until the lower end of the nut 11 abuts against the annular cutter disc 2, loosen the fixing block, and the reset spring 1203 changes from a compressed state to a freely extended state to clamp the nut 11, which can prevent the bolt 10 from loosening due to vibration.

[0043] In this embodiment: a mounting hole 9 is opened on the top surface of the annular cutter disc 2, and the mounting hole 9 is located above the threaded hole 8. The mounting hole 9 is adapted to the nut 11, and a connecting hole 1205 adapted to the second connecting rod 1202 is opened on the side of the nut 11.

[0044] In this solution, a plurality of connection holes 1205 are provided, and the plurality of connection holes 1205 are evenly arranged around the side of the bolt 10 , which can improve the probability of the clamping connection between the second connection rod 1202 and the nut 11 .

[0045] When replacing a new gear assembly 4, engage the block 7 with the slot 6 to align the threaded hole 8 on the block 7 with the threaded hole 8 on the annular cutter disc 2, then pull the fixing block outward to retract the tail end of the second connecting rod 1202 into the inner wall of the mounting hole 9, then fit the threaded portion of the bolt 10 with the threaded hole 8 on the annular cutter disc, and rotate the nut 11 to gradually penetrate the threaded hole 8 until the lower end of the nut 11 is located in the mounting hole 9, then loosen the fixing block, and the tail end of the second connecting rod 1202 pops out of the movable cavity 1204 and enters one of the connecting holes 1205 on the nut 11, thereby preventing the bolt 10 from loosening due to the high-speed rotation of the gear assembly 4.

[0046] In the present embodiment: a pick drill assembly 13 is also provided on the bottom surface of the annular cutter disc 2, and the pick drill assembly 13 is detachably connected to the bottom surface of the annular cutter disc 2. The pick drill assembly 13 includes a mounting tube 1301 and a pick drill bit 1302. The inner wall of the mounting tube 1301 is provided with an internal thread. One end of the pick drill bit 1302 is a threaded rod, which is inserted into the mounting tube 1301 and connected to the mounting tube 1301 through threaded fitting. A screw 1303 is provided between the pick drill bit 1302 and the mounting tube 1301.

[0047] By evenly distributing the pick drill bit 1302 and the cone 401 on the bottom surface of the annular cutter disc, a wedge-shaped free surface is formed in the broken rock mass, and the cone 401 breaks the annular wedge-shaped rock mass. The pick and the cone 401 interact with the rock mass, thereby improving the crushing and ring cutting efficiency of the pick drill bit 1302 and reducing the wear of the cone 401.

[0048] In this embodiment: a slag guide bar 14 is arranged outside the drill tube 1, and the slag guide bar 14 is a spiral structure wound around the outside of the drill tube 1, an opening 16 is arranged on the annular cutter head 2, and a slag collecting plate 15 is fixedly connected to one side of the opening 16, and the upper end of the slag collecting plate 15 is connected to one end of the slag guide bar 14.

[0049] During the annular cutting of the rock formation by the roller assembly 4, a large amount of crushed stone particles and rock powder will be generated. The crushed stone particles and rock powder generated during the drilling process are scooped up by the slag collecting plate 15 and directed to the slag guiding bar 14 through each slag collecting plate 15, which can reduce the accumulation of crushed stone particles and rock powder around the roller assembly 4 and increase the probability of the roller assembly 4 crushing the rock formation.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A maintenance-friendly cone assembly, comprising a drill barrel (1) and a plurality of cone assemblies (4), characterized in that: An annular cutter disc (2) is arranged on the outer side of the bottom end of the drill tube (1), and a plurality of mounting grooves (5) are arranged on the annular cutter disc (2). The annular cutter discs (2) on opposite sides of the plurality of mounting grooves (5) are each provided with a clamping groove (6), and a plurality of the tooth wheel assemblies (4) are respectively installed in the plurality of the mounting grooves (5), and the plurality of the tooth wheel assemblies (4) are detachably connected to the annular cutter disc (2).

2. The repairable gear assembly according to claim 1, characterized in that: The gear assembly (4) comprises a gear (401), a tooth palm (402) and a mounting block (403); one end of the tooth palm (402) is rotatably connected to the gear (401), and the other end is fixedly connected to the mounting block (403); the mounting block (403) is matched with the mounting groove (5); two opposite sides of the mounting block (403) are connected with clamping blocks (7); the clamping blocks (7) are matched with the clamping groove (6); the annular cutter disc (2) and the clamping groove (6) are both provided with matching threaded holes (8); the inner thread of the threaded hole (8) is matched with a bolt (10); the top of the bolt (10) is connected with a nut (11).

3. The repairable gear assembly according to any one of claims 1 to 2, characterized in that: It also includes an anti-loosening component (12), which is installed outside the annular cutter disc (2) and is used to prevent the bolts (10) from loosening on the annular cutter disc (2).

4. The repairable gear assembly according to claim 3, characterized in that: The anti-loosening component (12) includes a first connecting rod (1201), a return spring (1203) and a second connecting rod (1202). The tail end of the first connecting rod (1201) is fixedly connected to the top end of the second connecting rod (1202). The first connecting rod (1201) and the second connecting rod (1202) are slidably matched on the annular cutter disc (2). An active cavity (1204) is provided inside the annular cutter disc (2). The tail end of the first connecting rod (1201) is located in the active cavity (1204). The return spring (1203) is sleeved on the first connecting rod (1201). The two ends of the return spring (1203) are respectively connected to the top surface of the second connecting rod (1202) and the top surface of the inner wall of the active cavity (1204). The first connecting rod (1201) and the second connecting rod (1202) can slide in a direction close to or away from the nut (11).

5. The repairable gear assembly according to claim 4, characterized in that: The top surface of the annular cutter disc (2) is provided with a mounting hole (9), the mounting hole (9) is located above the threaded hole (8), the mounting hole (9) is matched with the nut (11), and the side surface of the nut (11) is provided with a connecting hole (1205) matched with the second connecting rod (1202).

6. The repairable gear assembly according to claim 1, characterized in that: The bottom surface of the annular cutter disc (2) is also provided with a pick drill assembly (13), and the pick drill assembly (13) is detachably connected to the bottom surface of the annular cutter disc (2). The pick drill assembly (13) comprises a mounting tube (1301) and a pick drill bit (1302). The inner wall of the mounting tube (1301) is provided with an internal thread. One end of the pick drill bit (1302) is a threaded rod, which is inserted into the mounting tube (1301) and connected to the mounting tube (1301) through threaded engagement. A screw (1303) is provided to provide clearance between the pick drill bit (1302) and the mounting tube (1301).

7. The repairable gear assembly according to claim 1, characterized in that: A slag guide bar (14) is arranged outside the drill tube (1), and the slag guide bar (14) is a spiral structure wound around the outside of the drill tube (1). An opening (16) is arranged on the annular cutter head (2), and a slag collecting plate (15) is fixedly connected to one side of the opening (16), and the upper end of the slag collecting plate (15) is connected to one end of the slag guide bar (14).

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