Sliding frame assembly, power head assembly and rotary drilling rig

Abstract

The present invention relates to the technical field of rotary drilling rigs, and in particular to a slide assembly, a power head assembly and a rotary drilling rig. The slide assembly comprises a slide and a block mechanism; the block mechanism comprises a lower block mechanism and an upper block mechanism both arranged on the slide; along the height direction of the pulley seat, the lower block mechanism and the upper block mechanism are respectively arranged at both ends of the pulley seat; wherein the lower block mechanism is used to abut against one end of the pulley seat; and the upper block mechanism is used to selectively approach the pulley seat to lock the pulley seat on the slide, or to move away from the pulley seat so that the pulley seat can be separated from the slide.

Description

Technical Field

[0001] The invention relates to the technical field of rotary drilling rigs, and in particular to a slide assembly, a power head assembly and a rotary drilling rig. Background Art

[0002] The power head box is connected to the carriage assembly through a connecting plate to form a power head assembly. When the rotary drilling assembly is transferred and disassembled, the power head assembly needs to be disassembled from the mast. Specifically, the carriage and mast of the carriage assembly are disassembled, and the pulley seat and carriage of the carriage assembly are disassembled.

[0003] However, the existing pulley seat and the carriage are fixed by using a through shaft or two half shafts to match with the hole to achieve fixation. The method of this shaft-hole matching is relatively difficult to disassemble and assemble. Summary of the invention

[0004] The objects of the present invention include, for example, providing a slide assembly, a power head assembly and a rotary drilling rig, which can efficiently and quickly complete the disassembly of the pulley seat and the slide, thereby realizing the rapid disassembly of the power head assembly and the mast.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a slide assembly, which is used to cooperate with a pulley seat, comprising:

[0007] A slide and a stopper mechanism; the stopper mechanism comprises a lower stopper mechanism and an upper stopper mechanism both of which are arranged on the slide;

[0008] Along the height direction of the pulley seat, the lower stop mechanism and the upper stop mechanism are respectively arranged at two ends of the pulley seat;

[0009] The lower stop mechanism is used to abut one end of the pulley seat; the upper stop mechanism is used to selectively approach the pulley seat to lock the pulley seat on the slide, or move away from the pulley seat to enable the pulley seat to detach from the slide.

[0010] In an optional embodiment, the upper stop mechanism includes an upper stop block, an elastic member and a push rod;

[0011] The push rod has a wedge-shaped surface, and the upper stopper has a first inclined surface;

[0012] The upper stopper is held against the slide by the elastic member, and the elastic member is used to provide elastic force to make the upper stopper move toward one end of the pulley seat, so as to lock the pulley seat on the slide;

[0013] The wedge-shaped surface of the push rod cooperates with the first inclined surface to move the upper stopper away from the pulley seat so that the pulley seat can be separated from the slide.

[0014] In an optional embodiment, the upper blocking mechanism further includes a slide member;

[0015] The slide member has a first channel with an open end and a second channel for the ejector rod to pass through;

[0016] The upper stopper is movably disposed in the first channel;

[0017] One end of the elastic member is pressed against the inner wall of the first channel, and the other end of the elastic member is connected to the upper stopper.

[0018] In an optional embodiment, the end of the upper stopper has a bayonet, and the bayonet is used to abut against the end of the pulley seat.

[0019] In an optional embodiment, the upper stopper has a recessed portion, and the end of the pulley seat has a protruding portion;

[0020] The recessed portion is plug-fitted with the protruding portion.

[0021] In an optional embodiment, the upper stopper further has a second inclined surface, and the second inclined surface is arranged opposite to the first inclined surface;

[0022] The second inclined surface is used to abut against the push rod so that the upper stopper remains in cooperation with the pulley seat and keeps the pulley seat locked on the slide.

[0023] In an optional embodiment, the push rod has a limiting opening, and the slide assembly further includes a limiting plate movably disposed on the slide;

[0024] The limiting plate is engaged with the limiting opening to keep the push rod in a preset position, so that the upper blocking mechanism keeps locking the pulley seat on the slide.

[0025] In an optional embodiment, the lower stop mechanism includes a lower stop block, and the lower stop block extends toward the pulley seat;

[0026] The lower stopper is used to abut against one end of the pulley seat to cooperate with the upper stop mechanism to lock the pulley seat.

[0027] In a second aspect, an embodiment of the present invention provides a power head assembly, the power head assembly comprising a power head housing, a connecting plate and a carriage assembly as described in any of the aforementioned embodiments;

[0028] The power head housing is arranged on the slide of the slide assembly through a connecting plate.

[0029] In a third aspect, an embodiment of the present invention provides a rotary drilling rig, the rotary drilling rig comprising a pulley seat, a mast, a wire rope and the power head assembly described in the above embodiment;

[0030] The slide frame of the power head assembly is slidably arranged on the mast, and the steel wire rope cooperates with the pulley on the pulley seat.

[0031] The beneficial effects of the embodiments of the present invention include, for example:

[0032] The lower stop mechanism of the carriage assembly of the present invention is used to abut against one end of the pulley seat; the upper stop mechanism is used to selectively approach the pulley seat to lock the pulley seat on the carriage, or to move away from the pulley seat so that the pulley seat can be separated from the carriage. In this way, the pulley seat and the carriage can be locked or separated conveniently and quickly through the stop mechanism, thereby facilitating the disassembly of the power head assembly and the mast, and improving the convenience of use of the rotary drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 is a schematic structural diagram of the carriage assembly of this embodiment;

[0035] Figure 2 for Figure 1 A partial schematic diagram of

[0036] Figure 3 for Figure 1 Another partial schematic diagram of;

[0037] Figure 4 for Figure 1 A full cross-sectional diagram of

[0038] Figure 5 for Figure 4 A partial schematic diagram of

[0039] Figure 6 for Figure 4 Another partial schematic diagram of;

[0040] Figure 7 is a schematic structural diagram of the slide member of this embodiment;

[0041] Figure 8 Schematic diagram of the structure of the upper stop mechanism of this embodiment.

[0042] Icons: 10-slide assembly; 11-slide; 12-block mechanism; 100-lower block mechanism; 101-lower block; 102-block cover; 200-upper block mechanism; 201-upper block; 211-first inclined surface; 212-second inclined surface; 213-catchplate; 214-recessed portion; 220-elastic member; 221-guide rod; 222-blocking piece; 230-thrust rod; 231-wedge surface; 232-limiting opening; 240-slide member; 241-first channel; 242-second channel; 243-matching hole; 300-limiting plate; 301-oblique wedge portion; 302-waist-shaped hole; 20-pulley seat; 21-protruding portion. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] 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 invention claimed for protection, 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.

[0045] 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.

[0046] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do 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 present invention.

[0047] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0048] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0049] The power head box is connected to the carriage assembly 10 through a connecting plate to form a power head assembly. When the rotary drilling assembly is transferred and disassembled, the power head assembly needs to be disassembled from the mast. Specifically, the carriage 11 of the carriage assembly 10 is disassembled from the mast, and the pulley seat 20 of the carriage assembly 10 is disassembled from the carriage 11. However, when the existing pulley seat 20 is connected to the carriage 11, a through shaft or two half shafts are used to cooperate with the hole to achieve fixation.

[0050] Or the pulley seat 20 is fixed to the carriage 11, and the pins on the carriage 11, the connecting plate and the power head box need to be disassembled when the drilling rig is transferred to another site and the power head is disassembled.

[0051] The existing power head assembly disassembly solution has the following disadvantages:

[0052] 1) The pin shaft is easily bent when subjected to force, and the shaft hole is difficult to disassemble and assemble.

[0053] 2) The disassembly and assembly of the slide 11 and the pins on the box body or the connecting plate requires a large amount of work and is difficult.

[0054] In order to overcome the above problems, a carriage assembly 10 is provided in the following embodiment.

[0055] Please refer to Figure 1 , this embodiment provides a slide assembly 10, which is used to cooperate with a pulley seat 20, including a slide 11 and a block mechanism 12; the block mechanism 12 includes a lower block mechanism 100 and an upper block mechanism 200 both arranged on the slide 11;

[0056] Along the height direction of the pulley seat 20, the lower stop mechanism 100 and the upper stop mechanism 200 are respectively arranged at two ends of the pulley seat 20;

[0057] The lower stop mechanism 100 is used to resist one end of the pulley seat 20; the upper stop mechanism 200 is used to selectively approach the pulley seat 20 to lock the pulley seat 20 on the slide 11, or move away from the pulley seat 20 so that the pulley seat 20 can be separated from the slide 11.

[0058] The lower block mechanism 100 of the carriage assembly 10 of the present solution can be used to resist one end of the pulley seat 20, thereby limiting the position of one end of the pulley seat 20 on the carriage 11; the upper block mechanism 200 is used to selectively approach the pulley seat 20 to lock the pulley seat 20 on the carriage 11, or to move away from the pulley seat 20 so that the pulley seat 20 can be separated from the carriage 11, so that the upper block mechanism 200 cooperates with the lower block mechanism 100 to lock the pulley seat 20 in a preset position, or unlock the pulley seat 20 for easy disassembly. In this way, the locking or separation of the pulley seat 20 and the carriage 11 can be completed conveniently and quickly through the block mechanism 12, thereby facilitating the disassembly of the power head assembly and the mast, and improving the convenience of use of the rotary drilling rig.

[0059] It should be noted that, in this embodiment, the slide 11 is provided with a slideway extending in the height direction of the slide 11, and the pulley seat 20 is slidably arranged in the slideway. The lower gear mechanism is arranged at the lower end of the slide 11, and the upper gear mechanism 200 is arranged at the upper end of the slide 11. It can be understood that the upper and lower ends here are relative concepts. In other embodiments, the lower gear mechanism may be arranged at the upper end, and the upper gear mechanism 200 may be arranged at the lower end.

[0060] Please continue to refer to Figures 1 to 8 , to understand more structural details of the slide assembly 10.

[0061] In this embodiment of the present invention, the upper stop mechanism 200 includes an upper stop block 201, an elastic member 220 and a push rod 230; the push rod 230 has a wedge-shaped surface 231, and the upper stop block 201 has a first inclined surface 211;

[0062] The upper stopper 201 is held against the slide 11 by an elastic member 220, and the elastic member 220 is used to provide an elastic force to move the upper stopper 201 toward one end of the pulley seat 20, so as to lock the pulley seat 20 on the slide 11;

[0063] The wedge-shaped surface 231 of the push rod 230 cooperates with the first inclined surface 211 to move the upper stopper 201 away from the pulley seat 20 so that the pulley seat 20 can be separated from the slide 11 .

[0064] The elastic force provided by the elastic member 220 ensures that the upper block 201 has a tendency to move close to the pulley seat 20, thereby ensuring that the upper block 201 can conveniently lock the pulley seat 20. As can be seen from the figure, in this embodiment, the top rod 230 is along the height direction of the slide 11, and the wedge surface 231 at the bottom of the top rod 230 cooperates with the first inclined surface 211. When the surface of the wedge surface 231 fits the first inclined surface 211, as the top rod 230 continues to move downward, the wedge surface 231 moves toward the bottom of the first inclined surface 211, thereby pushing the upper block 201 to retreat in a direction away from the pulley seat 20, thereby unlocking the pulley seat 20 and the slide 11, which can facilitate the removal of the pulley seat 20.

[0065] Optionally, in this embodiment, the elastic member 220 is a compression spring.

[0066] It can also be seen from the figure that in this embodiment of the present invention, the upper stop block 201 also has a second inclined surface 212, and the second inclined surface 212 is arranged opposite to the first inclined surface 211; the second inclined surface 212 is used to abut against the top rod 230 so that the upper stop block 201 remains in cooperation with the pulley seat 20, and keeps the pulley seat 20 locked on the slide 11.

[0067] Furthermore, the second inclined surface 212 and the first inclined surface 211 are arranged in opposite directions, that is, the inclined directions of the two are away from each other. When in use, the wedge-shaped surface 231 of the push rod 230 is adjusted to align with the second inclined surface 212, and the upper block 201 can only move in the direction close to the pulley seat 20, but cannot move in the direction away from the pulley seat 20, and the end of the upper block 201 is engaged with the pulley seat 20, so that the block mechanism 12 can ensure the locking state of the pulley seat 20.

[0068] In this embodiment of the present invention, the push rod 230 has a limit opening 232, and the slide assembly 10 also includes a limit plate 300 movably arranged on the slide 11; the limit plate 300 is snap-fitted with the limit opening 232 to maintain the push rod 230 in a preset position so that the upper blocking mechanism 200 keeps the pulley seat 20 locked on the slide 11.

[0069] Optionally, the limiting opening 232 is a triangular opening provided on the upper side of the push rod 230. The limiting plate 300 is a plate member having a wedge-shaped inclined wedge portion 301, and the inclined wedge portion 301 cooperates with the limiting opening 232 to fix the push rod 230. Further, the limiting plate 300 has a waist-shaped hole 302, and a connecting member (optionally, the connecting member is a bolt) passes through the waist-shaped hole 302 to fix the limiting portion on the slide 11. By loosening the connecting member, the limiting plate 300 can move along the waist-shaped hole 302, so that the inclined wedge portion 301 is separated from the limiting opening 232, so that the push rod 230 can move freely; by locking the connecting member, the inclined wedge portion 301 of the limiting plate 300 is engaged with the limiting opening 232, so as to maintain the locking state of the push rod 230 to the upper stopper 201.

[0070] It should be noted that it is understandable that a positioning hole can also be set on the push rod 230, and the positioning hole cooperates with the limit plate 300 to make the wedge surface 231 of the push rod 230 cooperate with the first inclined surface 211, thereby maintaining the unlocked state of the upper stopper 201 and the pulley seat 20.

[0071] Furthermore, in the present embodiment, the upper stop mechanism 200 also includes a slide member 240; the slide member 240 has a first channel 241 with an end opening, and a second channel 242 for the push rod 230 to pass through; the upper stop block 201 is movably arranged in the first channel 241; and one end of the elastic member 220 is abutted against the inner wall of the first channel 241, and the other end of the elastic member 220 is connected to the upper stop block 201.

[0072] The slide member 240 is arranged flatly on the slide 11, and the first channel 241 is perpendicular to the extension direction of the slide and extends horizontally. The opening of the first channel 241 passes through the inner wall of the slide (further, the end of the opening of the first channel 241 of the slide member 240 passes through the inner wall of the slide). The other end of the first channel 241 away from the opening is closed.

[0073] Optionally, the upper stop mechanism 200 further includes a guide rod 221 and a stopper 222. Further, the other end of the first channel 241 away from the opening has a matching hole 243, one end of the guide rod 221 is connected to the upper stopper 201, and the other end of the guide rod 221 can penetrate the matching hole 243. The elastic member 220 is sleeved on the guide rod 221, and one end of the elastic member 220 is abutted against the periphery of the matching hole 243 through the stopper 222, and the other end of the elastic member 220 is abutted against the upper stopper 201.

[0074] It can also be seen from the figure that the ends of the slide groove member 240 and the upper stopper 201 close to the pulley seat 20 are both provided with chamfers. The chamfers are conducive to the convenience of the pulley seat 20 moving along the slideway in the slide 11, thereby facilitating the removal and installation of the pulley seat 20 and the slide 11.

[0075] In this embodiment of the present invention, the end of the upper stopper 201 has a bayonet 213, and the bayonet 213 is used to abut against the end of the pulley seat 20. Further, the bayonet 213 abuts against the end edge of the pulley seat 20, so that the upper stopper 201 and the lower stopper 101 jointly define the pulley seat 20, so that the pulley seat 20 is locked by the stopper mechanism 12.

[0076] Furthermore, in this embodiment, the upper stopper 201 has a recessed portion 214 , and the end of the pulley seat 20 has a protruding portion 21 ; the recessed portion 214 is plug-fitted with the protruding portion 21 .

[0077] Optionally, the recessed portion 214 is a groove extending from the end of the bayonet 213 toward the pulley seat 20 and extending to the edge of the end of the upper stopper 201. The protruding portion 21 is a convex strip provided on the surface of the end of the pulley seat 20. The recessed portion 214 cooperates with the protruding portion 21 to limit the displacement of the upper stopper 201 and the pulley seat 20 in a direction perpendicular to the plate surface of the pulley seat 20, thereby ensuring the stability of the pulley seat 20 and the slide 11.

[0078] Furthermore, in this embodiment of the present invention, the lower stop mechanism 100 includes a lower stop block 101, which extends toward the pulley seat 20; the lower stop block 101 is used to abut against one end of the pulley seat 20 to cooperate with the upper stop mechanism 200 to lock the pulley seat 20.

[0079] It should be noted that the upper end of the lower stopper 101 of this embodiment has an arc surface to receive the falling pulley seat 20 and to smoothly fall against the arc surface. The lower end of the lower stopper 101 has an extension toward the pulley seat 20, and the extension receives the bottom of the pulley seat 20. The connection between the extension and the main body of the lower stopper 101 has an inner concave portion away from the pulley seat 20.

[0080] Optionally, the lower stop mechanism 100 further includes a stopper cover plate 102 disposed on the surface of the lower stopper 101 .

[0081] When in use, before the pulley seat 20 is installed in the slide 11, the push rod 230 is first pressed down through the wedge surface 231 and the first inclined surface 211 to retract the upper stopper 201 into the slide member 240, and the limit plate 300 is used to fix the push rod 230. Then the pulley seat 20 is slid into the body of the slide 11 from top to bottom and contacts the lower stopper 101.

[0082] Then, the push rod 230 is pulled upward, and the upper block 201 is pushed out by the elastic force of the elastic member 220, and the push rod 230 is rotated and reversed to make the wedge surface 231 of the push rod 230 contact the second inclined surface 212 of the upper block 201, so as to prevent the upper block 201 from retreating into the slide member 240 and losing its function. At the same time, the protrusion 21 on the pulley seat 20 cooperates with the concave portion 214 of the upper block 201 to limit the movement of the pulley seat 20 forward, backward, left and right.

[0083] When the power head and the mast are disassembled, the process is similar to the above process. When the pulley seat 20 and the slide 11 are disassembled, the top rod 230 is pulled out upwards, and then inserted and pressed down to the lowest position so that the top rod 230 cooperates with the first inclined surface 211, so that the upper stopper 201 retracts, and the top rod 230 is fixed by the limit plate 300. At this time, the pulley seat 20 and the slide 11 remain unlocked, and the pulley seat 20 can be pulled out, so that the pulley seat 20 and the slide 11 are separated.

[0084] In the second aspect, an embodiment of the present invention provides a power head assembly, which includes a power head housing, a connecting plate and a slide assembly 10 of any one of the aforementioned embodiments; the power head housing is arranged on the slide 11 of the slide assembly 10 through the connecting plate.

[0085] The pulley seat 20 can be easily separated from the slide 11 through the slide assembly 10, and then the locking piece at the bottom of the mast can be removed to smoothly separate the power head assembly (excluding the pulley seat 20) from the mast.

[0086] When the power head assembly is installed with the mast, the pulley seat 20 and the slide 11 are first installed and locked, and then the power head assembly is matched with the mast, thereby completing the connection between the power head assembly and the mast.

[0087] In the third aspect, an embodiment of the present invention provides a rotary drilling rig, which includes a pulley seat 20, a mast, a wire rope and a power head assembly of the aforementioned embodiment; the slide 11 of the power head assembly is slidably arranged on the mast, and the wire rope cooperates with the pulley on the pulley seat 20.

[0088] Such a rotary drilling rig can conveniently disassemble the power head assembly, thereby facilitating the replacement of the power head assembly and facilitating the transfer and use of the rotary drilling rig.

[0089] In summary, the embodiment of the present invention provides a slide assembly 10, a power head assembly and a rotary drilling rig, which have at least the following advantages:

[0090] 1. When the power head assembly is separated from the mast, the pulley seat 20 is separated from the slide 11, and the disassembly and assembly workload is small.

[0091] 2. Change the connection mode of the carriage 11 and the pulley seat 20 from the shaft hole connection to the block connection. The line contact of the shaft hole connection is changed to the surface contact. When there is a gap in the surface contact, it will still be a surface contact, which allows a certain amount of gap to exist and facilitates disassembly and assembly.

[0092] 3. Large operating space and easy disassembly and assembly.

[0093] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A carriage assembly, used to cooperate with a pulley seat, characterized in that: include: A slide and a stopper mechanism; the stopper mechanism comprises a lower stopper mechanism and an upper stopper mechanism both of which are arranged on the slide; along the height direction of the pulley seat, the lower stopper mechanism and the upper stopper mechanism are respectively arranged at two ends of the pulley seat; wherein the lower stopper mechanism is used to abut against one end of the pulley seat; the upper stopper mechanism is used to selectively approach the pulley seat to lock the pulley seat on the slide, or to move away from the pulley seat so that the pulley seat can be separated from the slide; The upper stop mechanism comprises an upper stopper, an elastic member and a push rod; the push rod has a wedge-shaped surface, and the upper stopper has a first inclined surface; the upper stopper is abutted against the slide by the elastic member, and the elastic member is used to provide an elastic force to make the upper stopper move toward one end of the pulley seat to lock the pulley seat on the slide; the wedge-shaped surface of the push rod cooperates with the first inclined surface to make the upper stopper move away from the pulley seat so that the pulley seat can be separated from the slide; The lower stop mechanism comprises a lower stop block, which extends toward the pulley seat; the lower stop block is used to abut against one end of the pulley seat to cooperate with the upper stop mechanism to lock the pulley seat.

2. The carriage assembly according to claim 1, characterized in that: The upper blocking mechanism also includes a slide member; The slide member has a first channel with an open end and a second channel for the ejector rod to pass through; The upper stopper is movably disposed in the first channel; One end of the elastic member is pressed against the inner wall of the first channel, and the other end of the elastic member is connected to the upper stopper.

3. The carriage assembly according to claim 1, characterized in that: The end of the upper stopper is provided with a bayonet, and the bayonet is used for abutting against the end of the pulley seat.

4. The carriage assembly according to claim 1, wherein: The upper stopper has a recessed portion, and the end of the pulley seat has a protruding portion; The recessed portion is plug-fitted with the protruding portion.

5. The carriage assembly according to claim 1, characterized in that: The upper stopper also has a second inclined surface, and the second inclined surface is arranged opposite to the first inclined surface; The second inclined surface is used to abut against the push rod so that the upper stopper remains in cooperation with the pulley seat and keeps the pulley seat locked on the slide.

6. The carriage assembly according to claim 1, characterized in that: The push rod has a limiting opening, and the slide assembly further includes a limiting plate movably arranged on the slide; The limiting plate is engaged with the limiting opening to keep the push rod in a preset position, so that the upper blocking mechanism keeps locking the pulley seat on the slide.

7. A power head assembly, characterized in that: The power head assembly comprises a power head housing, a connecting plate and a carriage assembly as described in any one of claims 1 to 6; The power head housing is arranged on the slide of the slide assembly through a connecting plate.

8. A rotary drilling rig, characterized in that: The rotary drilling rig comprises a pulley seat, a mast, a wire rope and the power head assembly according to claim 7; The slide frame of the power head assembly is slidably arranged on the mast, and the steel wire rope cooperates with the pulley on the pulley seat.

Images