Power head and rotary drilling rig

Abstract

The invention belongs to the technical field of engineering machinery, and particularly relates to a power head and a rotary drilling rig. The device comprises the bracket, the driver assembly and the fixing assembly, the bracket is in sliding connection with the driver assembly, the sliding positioning piece limits the relative position of the driver assembly and the bracket, alignment of the driver assembly and the bracket can be rapidly and accurately achieved, and fixing of the bracket and the driver assembly is facilitated. Under the action of gravity, the driver assembly can automatically rotate, alignment of the driver assembly and the fixing assembly between the bracket is facilitated, and therefore the telescopic positioning piece can be quickly aligned and inserted into the positioning hole, disassembly and assembly are convenient, a large amount of maintenance time is saved, the structure is simple, cost is low, and stability is good.

Description

Technical Field

[0001] The 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 mostly used for bored pile construction. They have the advantages of fast hole-forming speed and strong mobility. They can be used with different drilling tools such as long spirals, down-the-hole hammers, and impact hammers to achieve a variety of construction methods. They are widely used in the construction industry. During the construction of the rotary drilling rig, the main reel wire rope is connected to the drill rod to drive the drill tool to achieve lifting and lowering, and the pressurized winch provides the power head with upward lifting force or downward pressure along the drill mast slide rail.

[0003] The power head generally includes a bracket and a driver assembly assembled together. Existing power heads mostly fix the bracket and the driver assembly by assembly. The assembly process requires aligning multiple positioning holes on the bracket and the driver assembly at the same time, and then locking them with a pin. It is very difficult to align multiple positioning components at the same time, which makes the disassembly and assembly of the power head difficult, the cycle is long, and the maintenance is difficult. 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 object, the technical solution provided by the present invention is as follows:

[0006] In a first aspect, the present application provides a power head, comprising a bracket, a drive assembly and a fixing assembly, wherein the bracket is slidingly connected to the drive assembly via 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 assembly 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 arranged on the bracket, and the other is arranged on the drive assembly, the plug-in shaft is plugged into the guide groove, and the sliding positioning member is arranged 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 arranged on the bracket, and the other is arranged on the drive assembly, the telescopic positioning member is inserted into the positioning hole, and at least one group of the fixing members is arranged 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 slot is open at the top, and the width of the guide slot 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 arranged on both sides of the bracket, guide holes are arranged 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 arranged 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, the lifting wire rope of the first lifting winch is wound around the upper pulley, and a double-rate lifting device is also provided on the bracket, 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 uses a sliding connection between the bracket and the driver assembly, and the sliding positioning member limits the relative position of the driver assembly and the bracket, so that the driver assembly and the bracket can be aligned quickly and accurately, and the bracket and the driver assembly can be fixed conveniently. The driver assembly can rotate automatically under the action of gravity, which facilitates the alignment of the driver assembly and the fixed component between the bracket, so that the telescopic positioning member can be quickly aligned and inserted into the positioning hole, which is convenient for disassembly and assembly, and saves a lot of maintenance time. It has a simple structure, low cost and good 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0019] Figure 1 Schematic diagram of the connection structure between the bracket and the drive assembly in the 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 the 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 slide 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 shell; 8. Power head slider. DETAILED DESCRIPTION

[0025] The following will be combined with the 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 described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and 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 via 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 the alignment of the fixed component 4 between the driver assembly 2 and the bracket 1. It is convenient to fix the bracket 1 and the driver assembly 2, and it is easy to disassemble and assemble.

[0029] Example 2

[0030] The difference between this embodiment and the first embodiment is that the sliding positioning member 3 includes a guide slot 31 and a plug-in shaft 32 corresponding to the guide slot 31; one of the guide slot 31 and the plug-in shaft 32 is arranged on the bracket 1, and the other is arranged on the drive assembly 2. The guide slot 31 may be arranged on the bracket 1, and the plug-in shaft 32 may be arranged on the drive assembly 2, or the plug-in shaft 32 may be arranged on the bracket 1, the guide slot 31 may be arranged on the drive assembly 2, and the plug-in shaft 32 may be plugged into the guide slot 31. At least one group of sliding positioning members 3 is arranged, and one group 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 arranged on both sides of the bracket 1. Specifically, the two sides of the bracket 1 are fixedly connected to the guide slots 31, and the inner side of the driver assembly 2 is provided with a plug-in shaft 32 corresponding to the two guide slots 31. By hoisting the driver assembly 2, the plug-in shaft 32 is moved above the guide slots 31, and under the action of gravity, the plug-in shaft 32 slides along the guide slots 31. The telescopic positioning member 41 is arranged below the guide slots 31, and due to the action of gravity, the alignment of the fixed component 4 between the driver assembly 2 and the bracket 1 can be achieved.

[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 its width decreases from top to bottom, so that the position requirement of the hoisting drive assembly 2 is high, and the plug-in shaft 32 is convenient to be plugged 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, respectively. The telescopic positioning member 41 is provided on the driver assembly 2 accordingly. The telescopic positioning member 41 can be a telescopic rod or other structure capable of realizing a telescopic function. 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 driver assembly 2 and the bracket 1 can be fixed by extending the telescopic positioning member 41 into the positioning hole 42.

[0034] Example 3

[0035] The difference between this embodiment and embodiment 2 is that: the fixing assembly 4 includes a two-way telescopic rod and a positioning hole 42, the middle of the two-way telescopic rod is fixed to the bracket 1 through a mounting frame 411, and the two ends of the two-way telescopic rod bracket 1 can be telescoped, and the bracket 1 is provided with guide plates 5 on both sides of the two-way telescopic rod, and the guide plates 5 are provided with guide holes 51, and the two ends of the two-way telescopic rod are inserted into the guide holes 51 on the corresponding side; the driver assembly 2 is provided with positioning holes 42 corresponding to the two ends of the two-way telescopic rod, and both ends of the two-way telescopic rod pass through the guide holes 51, and the end of the two-way telescopic rod passing 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, and the driver assembly 2 and the bracket 1 can be fixed by the two-way telescopic rod extending and retracting to the two ends into the positioning hole 42.

[0036] In this embodiment, a pulley block 6 is provided inside the bracket 1, and the pulley block 6 is fixed inside the main body of the bracket 1 by bolt fasteners. It has the function of lifting and pulling down, and the lifting force is 400-500kN; the pulley block 6 includes an upper pulley and a lower pulley, 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 structure of the pulley block 6 on the bracket 1 is a conventional design, and its connection and use methods are no longer repeated. In view of the situation of insufficient power, a double-rate lifting device 7 is often added separately in the prior art. In order to increase the lifting force of the power head, the present 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. A mounting shell 75 is arranged above the bracket 1. The pulley assembly 71 is connected to the mounting object through a fixing pin 72. A baffle 73 is arranged on one side of the mounting shell 75, and a rope block 74 is arranged 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 force bearing capacity of the guide slot 31 , reinforcing ribs and reinforcing ribs 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 clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0040] The above is only a preferred implementation 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 component. The bracket is slidingly connected to the driver assembly through a sliding positioning piece. The sliding positioning piece is used to limit the relative position between the driver assembly and the bracket. The fixing component is used to fix the bracket and the driver assembly.

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

3. The power head according to claim 1, characterized in that: The fixing component includes a telescopic positioning member and a positioning hole, one of the telescopic positioning member and the positioning hole is arranged on the bracket, and the other is arranged on the driver assembly, the telescopic positioning member is inserted into the positioning hole, and at least one group of the fixing members is arranged on each side of the bracket.

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

5. A power head according to claim 1, characterized in that: The telescopic positioning member is arranged below the guide sliding groove.

6. 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.

7. 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 arranged on both sides of the bracket. Guide holes are arranged on the guide plates. Both ends of the bidirectional telescopic rod are inserted into the guide holes on the corresponding sides. The driver assembly is provided with a positioning hole. The end of the bidirectional telescopic rod extends out from the guide hole and is inserted into the positioning hole.

8. 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.

9. The power head according to claim 1, characterized in that: An upper pulley and a lower pulley are arranged inside the bracket, the pressurized steel wire rope of the pressurized winch is wound around the lower pulley, the lifting steel wire rope of the first lifting winch is wound around the upper pulley, and a double-rate lifting device is also arranged on the bracket, 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.

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

Images