A power head and a rotary drilling rig

Abstract

The present application belongs to the technical field of engineering machinery, and particularly relates to a power head and a rotary drilling rig. The present application comprises a bracket, a driver assembly and a fixing assembly, is connected through sliding between the bracket and the driver assembly, and the relative position of the driver assembly and the bracket is limited by a sliding positioning member, so that the alignment of the driver assembly and the bracket can be quickly and accurately realized, and the bracket and the driver assembly are conveniently fixed. The driver assembly can be automatically rotated under the action of gravity, the alignment of the fixing assembly between the driver assembly and the bracket is facilitated, the telescopic positioning member can be quickly aligned and inserted into a positioning hole, convenient disassembly and assembly are realized, a large amount of maintenance time is saved, the structure is simple, the cost is low and the stability is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering machinery, and in particular relates to a power head and a rotary drilling rig. Background Art

[0002] Rotary drilling rigs are primarily used for bored pile construction. They offer advantages such as rapid drilling speed and high maneuverability. They can be combined with various drilling tools, such as long auger, down-the-hole hammer, and impact hammer, to achieve a variety of construction methods. They are widely used in the construction industry. During operation, a main reel wire rope connected to the drill pipe drives the drill tool, raising and lowering it. A pressure winch provides the power head with upward lifting force or downward pressure along the drill mast slide rail.

[0003] A powerhead typically consists of a bracket and driver assembly assembled together. Existing powerheads often secure the bracket and driver assembly together through assembly. This assembly process requires aligning multiple positioning holes on the bracket and driver assembly simultaneously, then securing them with a pin. This simultaneous alignment of multiple positioning components is difficult, making assembly and disassembly of the powerhead difficult, time-consuming, and challenging to maintain. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention provides a power head and a rotary drilling rig, which can realize rapid disassembly and assembly between a bracket and a driver assembly.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows:

[0006] In the first aspect, the present application provides a power head, including a bracket, a drive assembly and a fixing component, wherein the bracket is slidingly connected to the drive assembly through a sliding positioning member, the sliding positioning member is used to limit the relative position between the drive assembly and the bracket, and the fixing component is used to fix the bracket and the drive assembly.

[0007] Optionally, the sliding positioning member includes a guide groove and a plug-in shaft corresponding to the guide groove; one of the guide groove and the plug-in shaft is set on the bracket, and the other is set on the drive assembly, the plug-in shaft is plugged into the guide groove, and the sliding positioning member is set in at least one group.

[0008] Optionally, the fixing component includes a telescopic positioning member and a positioning hole, one of the telescopic positioning member and the positioning hole is set on the bracket, and the other is set on the drive assembly, the telescopic positioning member is inserted into the positioning hole, and at least one group of the fixing members is set on each side of the bracket.

[0009] Optionally, the sliding positioning members are provided on both sides of the bracket.

[0010] Optionally, the telescopic positioning member is arranged below the guide slot.

[0011] Optionally, the guide chute is open at the top, and the width of the guide chute decreases from top to bottom.

[0012] Optionally, the fixing component includes a bidirectional telescopic rod and a positioning hole, the bidirectional telescopic rod is arranged on a bracket, guide plates are provided on both sides of the bracket, guide holes are provided on the guide plates, and both ends of the bidirectional telescopic rod are inserted into the guide holes on the corresponding sides; a positioning hole is provided on the drive assembly, and the end of the bidirectional telescopic rod extends from the guide hole and is inserted into the positioning hole.

[0013] Optionally, the fixing assembly is arranged on a side of the bracket facing away from the power head slider.

[0014] Optionally, an upper pulley and a lower pulley are provided inside the bracket, the pressurized wire rope of the pressurized winch is wound around the lower pulley, and the lifting wire rope of the first lifting winch is wound around the upper pulley. The bracket is also provided with a double-rate lifting device, and the power wire rope is wound around the double-rate lifting device. One end of the power wire rope is connected to the goose head fixed end of the drill mast, and the other end is connected to the second lifting winch.

[0015] In a second aspect, the present application also provides a rotary drilling rig comprising the above-mentioned power head.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] The present invention utilizes a sliding connection between the bracket and the driver assembly, with the sliding positioning member limiting the relative position of the driver assembly and the bracket. This allows for quick and accurate alignment of the driver assembly and bracket, facilitating securement of the bracket and driver assembly. The driver assembly automatically rotates under the action of gravity, facilitating alignment of the fixed components between the driver assembly and the bracket. This allows for quick alignment and insertion of the telescopic positioning member into the positioning hole, facilitating assembly and disassembly, and significantly reducing maintenance time. The design also features a simple structure, low cost, and excellent stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 Schematic diagram of the connection structure between the bracket and the drive assembly in an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of the driver assembly in the embodiment of the present application;

[0021] Figure 3 Schematic diagram of the bracket structure in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the back structure of the bracket in the embodiment of the present application;

[0023] Description of reference numerals:

[0024] 1. Bracket; 2. Drive assembly; 3. Sliding positioning member; 31. Guide groove; 32. Plug-in shaft; 4. Fixing assembly; 41. Telescopic positioning member; 411. Mounting frame; 42. Positioning hole; 5. Guide plate; 51. Guide hole; 6. Pulley block; 7. Double-rate lifting device; 71. Pulley assembly; 72. Fixing pin; 73. Block cover; 74. Block rope; 75. Mounting housing; 8. Power head slider. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use.

[0026] Example 1

[0027] like Figure 1 As shown, a power head includes a bracket 1, a drive assembly 2 and a fixing component 4. The bracket 1 is slidingly connected to the drive assembly 2 through a sliding positioning member 3. The sliding positioning member 3 is used to limit the relative position between the drive assembly 2 and the bracket 1. The fixing component 4 is used to fix the bracket 1 and the drive assembly 2.

[0028] Through the sliding connection between the bracket 1 and the driver assembly 2, the sliding positioning member 3 limits the relative position of the driver assembly 2 and the bracket 1. Under the action of gravity, the driver assembly 2 can automatically rotate to achieve alignment of the fixing component 4 between the driver assembly 2 and the bracket 1. This facilitates the fixing of the bracket 1 and the driver assembly 2 and facilitates assembly and disassembly.

[0029] Example 2

[0030] This embodiment differs from Embodiment 1 in that the sliding positioning member 3 includes a guide groove 31 and a plug-in shaft 32 corresponding to the guide groove 31; one of the guide groove 31 and the plug-in shaft 32 is disposed on the bracket 1, and the other on the drive assembly 2. Alternatively, the guide groove 31 may be disposed on the bracket 1, and the plug-in shaft 32 may be disposed on the drive assembly 2, or the plug-in shaft 32 may be disposed on the bracket 1, the guide groove 31 may be disposed on the drive assembly 2, and the plug-in shaft 32 may be plugged into the guide groove 31. At least one set of sliding positioning members 3 is provided, and a set of sliding positioning members 3 can also limit the relative position between the drive assembly 2 and the bracket 1. In this embodiment, sliding positioning members 3 are provided on both sides of the bracket 1. Specifically, guide slots 31 are fixedly connected to both sides of the bracket 1. Connecting shafts 32 corresponding to the two guide slots 31 are provided on the inner side of the driver assembly 2. By hoisting the driver assembly 2, the connecting shafts 32 are moved above the guide slots 31. Under the action of gravity, the connecting shafts 32 slide along the guide slots 31. A telescopic positioning member 41 is provided below the guide slots 31. Due to the action of gravity, the fixed assembly 4 between the driver assembly 2 and the bracket 1 can be aligned.

[0031] The fixing assembly 4 is arranged on a side of the bracket 1 facing away from the power head slider 8 .

[0032] The guide slot 31 is open at the top, and the width of the guide slot 31 decreases from top to bottom, thereby having a high degree of accommodation for the position requirement of the hoisting drive assembly 2 and facilitating the insertion of the plug-in shaft 32 into the guide slot 31 .

[0033] The fixing assembly 4 includes a telescopic positioning member 41 and a positioning hole 42. One of the telescopic positioning member 41 and the positioning hole 42 is provided on the bracket 1, and the other is provided on the driver assembly 2. The telescopic positioning member 41 is inserted into the positioning hole 42. At least one set of fixing members is provided on each side of the bracket 1. Positioning holes 42 can be provided on both sides of the bracket 1, and corresponding telescopic positioning members 41 are provided on the driver assembly 2. The telescopic positioning member 41 can be a telescopic rod or other structure capable of achieving a telescopic function. When the plug-in shaft 32 slides into the guide slot 31, the telescopic positioning member 41 aligns with the positioning hole 42. The telescopic positioning member 41 extends into the positioning hole 42, thereby securing the driver assembly 2 to the bracket 1.

[0034] Example 3

[0035] This embodiment differs from Embodiment 2 in that: the fixing assembly 4 includes a bidirectional telescopic rod and a positioning hole 42. The middle portion of the bidirectional telescopic rod is fixed to the bracket 1 via a mounting bracket 411. The two ends of the bidirectional telescopic rod bracket 1 can be telescoped. The bracket 1 is provided with guide plates 5 on both sides of the bidirectional telescopic rod. The guide plates 5 are provided with guide holes 51. The two ends of the bidirectional telescopic rod are inserted into the guide holes 51 on the corresponding sides. The driver assembly 2 is provided with positioning holes 42 corresponding to the two ends of the bidirectional telescopic rod. Both ends of the bidirectional telescopic rod pass through the guide holes 51. The end of the bidirectional telescopic rod that passes through the guide hole 51 is inserted into the positioning hole 42. Therefore, when the plug-in shaft 32 slides into the guide slot 31, the telescopic positioning member 41 is aligned with the positioning hole 42. The bidirectional telescopic rod is extended and retracted to the two ends and into the positioning hole 42, thereby achieving fixation between the driver assembly 2 and the bracket 1.

[0036] In this embodiment, a pulley group 6 is provided inside the bracket 1, and the pulley group 6 is fixed to the inside of the bracket 1 main body by bolt fasteners, and has the function of lifting and pulling down, and the lifting force is 400-500kN; the pulley group 6 includes an upper pulley and a lower pulley, and the pressurized steel wire rope of the pressurized winch is wound around the lower pulley, and the lifting wire rope of the first lifting winch is wound around the upper pulley. The structure of the pulley group 6 on the bracket 1 is a conventional design, and its connection and use methods are no longer repeated. In response to the situation of insufficient power, the prior art often adds a double-rate lifting device 7 separately. In order to increase the lifting force of the power head, this application provides a double-rate lifting device 7 on the bracket 1, and the power steel wire rope is wound around the double-rate lifting device 7. One end of the power steel wire rope is connected to the fixed end of the goose head of the drill mast, and the other end is connected to the second lifting winch. The double-rate lifting device 7 is integrated with the bracket 1, which greatly saves space. The double-rate lifting device 7 includes a pulley assembly 71, and a mounting shell 75 is provided above the bracket 1. The pulley assembly 71 is connected to the mounting object through a fixing pin 72. A baffle 73 is provided on one side of the mounting shell 75, and a rope block 74 is provided on the other side. The baffle 73 and the rope block 74 have the function of preventing interference between the wire rope and the hydraulic pipeline.

[0037] In order to enhance the bearing capacity of the guide slot 31 , a reinforcing rib and a reinforcing rib are provided on the bracket 1 on the side where the guide slot 31 is located.

[0038] The present application also provides a rotary drilling rig, comprising the above-mentioned power head.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A power head, characterized in that: It includes a bracket, a driver assembly and a fixing assembly. The bracket is slidingly connected to the driver assembly through a sliding positioning member. The sliding positioning member is used to limit the relative position between the driver assembly and the bracket. The fixing assembly is used to fix the bracket and the driver assembly. The fixing assembly includes a telescopic positioning member and a positioning hole, one of the telescopic positioning member and the positioning hole is provided on the bracket, and the other is provided on the drive assembly, the telescopic positioning member is inserted into the positioning hole, and at least one set of the fixing assembly is provided on each side of the bracket; The drive assembly is slidable along the bracket until the drive assembly is aligned with the fixed component between the bracket.

2. The power head according to claim 1, characterized in that: The sliding positioning member includes a guide groove and a plug-in shaft corresponding to the guide groove; one of the guide groove and the plug-in shaft is set on the bracket, and the other is set on the drive assembly, the plug-in shaft is plugged into the guide groove, and the sliding positioning member is set in at least one group.

3. The power head according to claim 1, characterized in that: The sliding positioning members are provided on both sides of the bracket.

4. A power head according to claim 2, characterized in that: The telescopic positioning member is arranged below the guide sliding groove.

5. The power head according to claim 2, characterized in that: The guide chute is open at the top, and the width of the guide chute decreases from top to bottom.

6. The power head according to claim 1, characterized in that: The fixing component includes a bidirectional telescopic rod and a positioning hole. The bidirectional telescopic rod is arranged on a bracket. Guide plates are provided on both sides of the bracket. Guide holes are provided on the guide plates. The two ends of the bidirectional telescopic rod are inserted into the guide holes on the corresponding sides; a positioning hole is provided on the drive assembly, and the end of the bidirectional telescopic rod extends from the guide hole and is inserted into the positioning hole.

7. The power head according to claim 1, characterized in that: The fixing assembly is arranged on a side of the bracket away from the power head slider.

8. The power head according to claim 1, characterized in that: An upper pulley and a lower pulley are provided inside the bracket, the pressurized steel wire rope of the pressurized winch is wound around the lower pulley, and the lifting steel wire rope of the first lifting winch is wound around the upper pulley. The bracket is also provided with a double-rate lifting device, and the power steel wire rope is wound around the double-rate lifting device. One end of the power steel wire rope is connected to the goose head fixed end of the drill mast, and the other end is connected to the second lifting winch.

9. A rotary drilling rig, characterized in that: The invention comprises a power head according to any one of claims 1 to 8.

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