Top-drive horizontal pushing mechanism

Abstract

The invention relates to the technical field of top drive and horizontal pushing, in particular to a top drive and horizontal pushing mechanism which comprises a derrick assembly, a crown block assembly is installed on one side of the upper end of the derrick assembly, a lifting system is arranged on one side of the crown block assembly, and a horizontal pushing tackle assembly is installed in the derrick assembly in a sliding mode. A lifting ring does not need to be inclined forwards to grab the drilling tool; the position locking of the tackle mechanism and the top drive body assembly can be relieved through retraction of the limiting oil cylinder assembly, the flat pushing tackle assembly slides downwards by means of self weight, the connecting rod assembly is pressed to incline forwards gradually from the vertical state, a top drive is pushed to move forwards horizontally, and a drilling tool is grabbed after a main shaft of the top drive coincides with a small mouse hole. After the top drive grabs the drilling tool, the horizontal pushing oil cylinder assembly retracts, the horizontal pushing tackle assembly is pushed to move upwards, the top drive is driven to retreat to the drilling position, the limiting oil cylinder assembly stretches out, and the positions of the horizontal pushing tackle assembly and the top drive are locked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of top drive flat pushing mechanism, and in particular to a top drive flat pushing mechanism. BACKGROUND

[0002] The top drive device is a new type of oil drilling equipment, which brings revolutionary changes to the oil industry, and greatly improves the drilling efficiency and drilling capacity.

[0003] The conventional top drive does not have a flat pushing mechanism, which can realize the functions that the conventional hanging ring tilting mechanism cannot realize. The conventional hanging ring tilting mechanism drives the hanging ring to tilt forward by extending or retracting the oil cylinder, and grabs the drilling tool from the second floor platform, but the forward tilting distance is small, the hoisting weight is small, and heavy objects such as drill collars cannot be lifted, so improvement is needed. SUMMARY

[0004] The present application relates to the technical field of top drive flat pushing mechanism, and in particular to a top drive flat pushing mechanism.

[0005] In order to achieve the above-mentioned purpose, the technical scheme is as follows: A top drive flat pushing mechanism, comprising a derrick assembly, a crown block assembly is installed on one side of the upper end of the derrick assembly, a lifting system is arranged on one side of the crown block assembly, a flat pushing trolley assembly is slidably installed in the derrick assembly, two connecting rod assemblies are rotatably connected in the flat pushing trolley assembly, a connecting seat assembly is rotatably connected at the lower ends of the two connecting rod assemblies, a flat pushing oil cylinder assembly is rotatably connected in the flat pushing trolley assembly, and the piston rod of the flat pushing oil cylinder assembly is rotatably connected to one side of one of the connecting rod assemblies. One side of the connecting seat assembly is detachably connected with a top drive body assembly.

[0006] Compared with the prior art, the present application does not need to use the hanging ring to tilt forward to grab the drilling tool; the limiting oil cylinder assembly can be retracted to release the position locking of the trolley mechanism and the top drive body assembly, the flat pushing trolley assembly slides downward by gravity, the connecting rod assembly is gradually tilted from the vertical state, the top drive is pushed forward horizontally, the top drive spindle coincides with the mouse hole, and the drilling tool is grabbed; after the top drive grabs the drilling tool, the flat pushing oil cylinder assembly is retracted, the flat pushing trolley assembly is pushed upward, the top drive is retreated to the drilling position, the limiting oil cylinder assembly is extended, and the flat pushing trolley assembly and the top drive position are locked.

[0007] Preferably, the derrick assembly comprises a derrick lower body, a derrick upper body is arranged through the top of the derrick lower body, and the derrick upper body and the derrick lower body are detachably connected. Limiting roller assemblies are installed at the upper ends of the four corners of the derrick lower body, and the four limiting roller assemblies respectively abut against the four corners of the derrick upper body.

[0008] Further, the limiting roller assembly can fully limit the stability of the derrick upper body during lifting, and can ensure stable lifting of the derrick upper body. In actual operation, the relative position relationship between the derrick upper body and the derrick lower body can be adjusted as needed to meet the work requirements, and the fixing can be fully performed to ensure the stability of the whole body, thereby ensuring the safety during use and work.

[0009] Preferably, the lifting system comprises a pulley assembly installed on one side of the crown block assembly, the upper end of the top drive body assembly is provided with a trolley, and a steel wire rope is installed between the trolley and the pulley assembly.

[0010] Further, in actual operation, the steel wire rope is wound or released by the winch to control the distance between the trolley and the pulley assembly, and the winch and the corresponding control components used by the power system of the lifting system are prior art and do not need to be disclosed again.

[0011] Preferably, the both ends of the flat push oil cylinder assembly are provided with a hydraulic control system, and a displacement sensor assembly is installed on the piston rod of the flat push oil cylinder assembly.

[0012] Further, the hydraulic control system can inject corresponding liquid materials into both ends of the flat push oil cylinder assembly as needed, for example, when the piston rod of the flat push oil cylinder assembly needs to be extended, liquid materials can be injected into the injection hole away from the end of the piston rod of the flat push oil cylinder assembly, so as to facilitate extension, and when contraction is needed, liquid materials can be injected into the injection hole close to the end of the piston rod of the flat push oil cylinder assembly, so as to ensure that the flat push oil cylinder assembly can stably extend and contract, or corresponding components can be configured to ensure stable flow of liquid materials.

[0013] Preferably, the derrick assembly is provided with a guide rail assembly, and the guide rail assembly comprises an upper guide rail assembly and a lower guide rail assembly. The flat push trolley assembly comprises four groups of the flat push trolley assembly installed on both sides, and the four groups of the flat push trolley assembly on the same side form a unit, and the two units are connected with the upper guide rail assembly and the lower guide rail assembly, respectively.

[0014] Further, in actual preparation, the roller assembly, the threaded bearing rod, and the nut assembly are composed, the threaded bearing rod penetrates through both sides, corresponding clamping members are arranged on both sides to ensure the stability of the position after connection of the threaded bearing rod and the nut assembly, and the stability of the roller assembly after installation can be ensured by the nut assembly. In actual preparation, the upper guide rail assembly and the lower guide rail assembly are respectively installed in the derrick upper body and the derrick lower body, and the welding is used to ensure the firmness of the connection. And in actual production preparation, the two sides are provided with four rows, each row is provided with a plurality of roller members from top to bottom, the four rows are divided into two units, and the upper guide rail assembly and the lower guide rail assembly are arranged in the two units respectively to effectively resist and ensure the stability of the lifting of the flat push trolley assembly in the derrick assembly.

[0015] Preferably, the two connecting rod assemblies are in parallelogram structure.

[0016] Further, one end of the connecting rod assembly connected with the connecting seat assembly is arranged obliquely, and the cooperation of the connecting seat assembly and the two connecting rod assemblies can ensure that the connecting seat assembly deflects stably, that is, in actual production preparation, the connecting seat assembly is composed of a vertical square plate and an inclined plate, and the cooperation of the two connecting rod assemblies and the connecting seat assembly can ensure that the vertical state of the vertical square plate is fully ensured during movement.

[0017] Preferably, a plurality of bolts are arranged at equal intervals on the side of the connecting seat assembly in contact with the top drive body assembly, and one end of each of the plurality of bolts is screwed into the top drive body assembly.

[0018] Further, the bolts can ensure the firmness of the connection between the connecting seat assembly and the top drive body assembly.

[0019] Preferably, limit oil cylinder assemblies are mounted on both sides of the flat push trolley assembly, and the connecting seat assembly is located between the two limit oil cylinder assemblies.

[0020] Further, the limit oil cylinder assembly is connected with the hydraulic system in the application, so that the hydraulic system can control the operation of the limit oil cylinder assembly. When the limit oil cylinder assembly extends to abut against the connecting seat assembly, the connecting seat assembly is effectively fixed. When the limit oil cylinder assembly retracts, the connecting seat assembly can be moved conveniently.

[0021] Preferably, the flat push oil cylinder assembly is located between the two connecting rod assemblies.

[0022] The beneficial effects of the application are: 1. The top drive can be displaced forward by a large distance to grasp a large weight drill. In specific working conditions, the function that cannot be realized by the conventional hanger ring tilting mechanism can be realized. 2. The flat push mechanism can accurately control the flat push position of the top drive body assembly through the displacement sensor assembly. 3. The hydraulic system is provided with a one-way throttle valve to control the pushing speed of the top drive body assembly, which is safe and reliable. 4. The limit oil cylinder assembly is installed, and the position of the flat push trolley assembly and the top drive body assembly can be fixed during drilling or tripping operations. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structural diagram of the application. Figure 2 is the state diagram of the invention after pushing horizontally; Figure 3 is the sectional view of the derrick assembly in the invention; Figure 4 is the front view of the horizontal pushing trolley assembly and the connecting seat assembly in the invention; Figure 5 is the structural diagram of the horizontal pushing oil cylinder assembly and the connecting rod assembly in the invention; Figure 6 is the enlarged view of A in the invention; Figure 2 In the figure: 1 horizontal pushing oil cylinder assembly, 2 connecting rod assembly, 3 horizontal pushing trolley assembly, 4 connecting seat assembly, 5 top drive body assembly, 6 guide rail assembly, 7 limiting oil cylinder assembly, 8 hydraulic control system, 9 displacement sensor assembly, 10 derrick assembly, 1001 lower derrick body, 1002 upper derrick body, 1003 limiting roller assembly, 11 trolley assembly, 12 lifting system, 1201 travelling block, 1202 steel wire rope, 1203 pulley assembly. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the drawings in the embodiments of the invention. Obviously, the described embodiments are only some of the embodiments of the invention, but not all the embodiments of the invention.

[0025] Referring to Figures 1-6 , a top drive horizontal pushing mechanism, comprising a derrick assembly 10, the upper end of the derrick assembly 10 is provided with a trolley assembly 11 on one side, the trolley assembly 11 is provided with a lifting system 12 on one side, the derrick assembly 10 is slidably provided with a horizontal pushing trolley assembly 3, the horizontal pushing trolley assembly 3 is rotatably connected with two connecting rod assemblies 2, the lower ends of the two connecting rod assemblies 2 are rotatably connected with a connecting seat assembly 4, the horizontal pushing trolley assembly 3 is rotatably connected with a horizontal pushing oil cylinder assembly 1, the piston rod of the horizontal pushing oil cylinder assembly 1 is rotatably connected to one side of one of the connecting rod assemblies 2; the horizontal pushing trolley assembly 3 moves up and down along a guide rail assembly 6, a top drive body assembly 5 moves forward and backward, and the connecting rod assemblies 2 rotate; the horizontal pushing oil cylinder assembly 1 is provided with a displacement sensor assembly 9 that can be accurately positioned, when the top drive moves horizontally to a mouse hole position, the horizontal pushing oil cylinder assembly 1 stops returning oil through a solenoid valve, and the top drive body assembly 5 stops moving; the hydraulic system is provided with a one-way throttling valve to prevent the horizontal pushing trolley assembly 3 from falling too fast; one side of the connecting seat assembly 4 is detachably connected with the top drive body assembly 5, which can ensure the firmness of the connection to facilitate assembly.

[0026] In this embodiment, the derrick assembly 10 comprises a lower derrick body 1001, the top of the lower derrick body 1001 is provided with an upper derrick body 1002 that penetrates through, and the upper derrick body 1002 and the lower derrick body 1001 are detachably connected.​ The upper end of the lower body 1001 of the derrick is provided with a limiting roller assembly 1003, and the four limiting roller assemblies 1003 are in abutment with the four corners of the upper body 1002 of the derrick. The relative position relationship between the upper body 1002 of the derrick and the lower body 1001 of the derrick can be adjusted as required to meet the working requirements, and the fixing can be fully performed to ensure the stability of the whole to ensure the safety during use and work.

[0027] In the embodiment, the hoisting system 12 comprises a pulley assembly 1203 installed on one side of the crown block assembly 11, a trolley 1201 installed on the upper end of the top drive body assembly 5, and a steel wire rope 1202 installed between the trolley 1201 and the pulley assembly 1203. In actual operation, the steel wire rope 1202 can be effectively wound or released by installing corresponding power components and winding wheel assemblies in an external winch to control the distance between the trolley 1201 and the pulley assembly 1203. The winding components and corresponding control components of the hoisting system 12 are prior art and do not need to be disclosed again.

[0028] In the embodiment, the hydraulic control system 8 is installed at both ends of the flat push oil cylinder assembly 1, and the displacement sensor assembly 9 is installed on the piston rod of the flat push oil cylinder assembly 1. The hydraulic control system 8 can inject corresponding liquid materials into both ends of the flat push oil cylinder assembly 1 as required. For example, when the piston rod of the flat push oil cylinder assembly 1 needs to be extended, liquid materials can be injected into the injection hole away from one end of the piston rod of the flat push oil cylinder assembly 1 to facilitate extension, and when contraction is needed, liquid materials can be injected into the injection hole close to one end of the piston rod of the flat push oil cylinder assembly 1 to ensure that the flat push oil cylinder assembly 1 can stably extend and contract. The flat push oil cylinder assembly 1 can be configured with corresponding components to ensure the stable flow of liquid materials.

[0029] In the embodiment, the guide rail assembly 6 is installed in the derrick assembly 10, and the guide rail assembly 6 comprises an upper guide rail assembly and a lower guide rail assembly. The flat push trolley assembly 3 comprises 301, and four groups of 302 are installed on both sides of 301. The four groups of 302 on the same side are a unit, and the two units 302 are connected with the upper guide rail assembly and the lower guide rail assembly, respectively. In actual preparation, 302 is composed of a roller assembly, a threaded bearing rod, and a nut assembly. The threaded bearing rod can penetrate through both sides of 301, and corresponding clamping members are arranged to ensure the stability of the position of the threaded bearing rod and 301 after connection, and the stability of the roller assembly after installation can be ensured through the nut assembly. In actual preparation, the upper guide rail assembly and the lower guide rail assembly are installed in the upper body 1002 of the derrick and the lower body 1001 of the derrick, respectively, and the connection firmness is ensured by welding. And in actual production preparation, the two sides of 301 are provided with four rows of 302, each row of 302 is provided with a plurality of roller members from top to bottom, the four rows of 302 are divided into two units, and the upper guide rail assembly and the lower guide rail assembly are arranged in the two units 302 respectively to effectively resist and ensure the stability of the lifting of the flat push trolley assembly 3 in the derrick assembly 10.

[0030] In the embodiment, the two connecting rod assemblies 2 are in parallelogram structure, and the parallelogram structure of the two connecting rod assemblies 2 can enable the connecting seat assembly 4 to move stably.

[0031] In the embodiment, a plurality of bolts are arranged at equal intervals on the side of the connecting seat assembly 4 in contact with the top drive body assembly 5, and one end of each of the plurality of bolts is screwed into the top drive body assembly 5. In actual operation, the bolts can fully ensure the firmness of the connection between the connecting seat assembly 4 and the top drive body assembly 5, and prevent loosening.

[0032] In the embodiment, the two sides of the flat push trolley assembly 3 are provided with limiting oil cylinder assemblies 7, and the connecting seat assembly 4 is located between the two limiting oil cylinder assemblies 7. In actual production preparation, the limiting oil cylinder assemblies 7 are connected with the hydraulic system in the application, and can provide power for the extension and retraction of the limiting oil cylinder assemblies 7. When it is necessary to deflect the connecting seat assembly 4 and the top drive body assembly 5, the staff can control the limiting oil cylinder assemblies 7 to retract, so that they do not resist the connecting seat assembly 4. When the limiting oil cylinder assemblies 7 extend and resist the connecting seat assembly 4, their positions are fixed.

[0033] In the embodiment, the flat push oil cylinder assembly 1 is located between the two connecting rod assemblies 2. The flat push oil cylinder assembly 1 can push one of the connecting rod assemblies 2 to deflect, and the connecting rod assembly 2 can drive the other connecting rod assembly 2 to deflect through the connecting seat assembly 4. The action of the two connecting rod assemblies 2 can ensure that the connecting seat assembly 4 deflects stably, that is, it can fully ensure that the vertical plate in the connecting seat assembly 4 always maintains a vertical state.

[0034] In the embodiment, the guide rail assembly 6 is welded in the derrick assembly 10.

[0035] The flat push trolley assembly 3 is sleeved on the guide rail assembly 6 through the rollers, and can move up and down, but cannot move forward and backward or left and right.

[0036] The flat push oil cylinder assembly 1 is connected with the flat push trolley assembly 3 and the connecting rod assembly 2 respectively. When the top drive body assembly 5 is pushed out, the oil cylinder extends, and the rod cavity needs to limit the oil return speed to prevent the flat push trolley assembly 3 from falling too fast. The flat push oil cylinder assembly 1 has a rod cavity to supply oil, and the top drive body assembly 5 is retracted.

[0037] The connecting rod assembly 2 is connected with the flat push trolley assembly 3 and the connecting seat assembly 4 respectively, and is in parallelogram structure.

[0038] The connecting seat assembly 4 is fixedly installed on the top drive body assembly 5.

[0039] The top drive body assembly 5.

[0040] The limiting oil cylinder assembly 7 controls the extension of the push oil cylinder assembly 1, and the limiting oil cylinder assembly 7 is retracted to release the limiting and fixing of the push trolley assembly 3 and the top drive body assembly 5; when the pushing action is completed, the limiting oil cylinder assembly 7 is extended to fix the relative position of the push trolley assembly 3 and the top drive body assembly 5.

[0041] The hydraulic control system 8 controls the extension or retraction of the push oil cylinder assembly 1 and the limiting oil cylinder assembly 7, and controls the extension speed of the push oil cylinder assembly 1.

[0042] The displacement sensor assembly 9 is installed in the push oil cylinder assembly 1. When the push oil cylinder assembly 1 acts, the displacement sensor assembly 9 provides a position signal to the hydraulic control system 8 to automatically control the action of the push oil cylinder assembly 1.

[0043] During the action of the pushing mechanism, the push trolley assembly 3 moves up and down along the guide rail assembly 6, the top drive body assembly 5 moves forward and backward, and the connecting rod assembly 2 rotates. The push oil cylinder assembly 1 is installed with the displacement sensor assembly 9 which can accurately position, when the top drive body assembly 5 moves horizontally to the mouse hole position, the push oil cylinder assembly 1 stops returning oil through the electromagnetic valve, and the top drive body assembly 5 stops moving; the hydraulic system is installed with a one-way throttle valve to prevent the push trolley assembly 3 from falling too fast during the falling process.

[0044] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A top drive push mechanism comprising a derrick assembly (10), characterized by: The upper end side of the derrick assembly (10) is provided with a crown block assembly (11), one side of the crown block assembly (11) is provided with a lifting system (12), the derrick assembly (10) is slidably provided with a flat push trolley assembly (3), two connecting rod assemblies (2) are rotatably connected in the flat push trolley assembly (3), the lower ends of the two connecting rod assemblies (2) are rotatably connected with a connecting seat assembly (4), a flat push oil cylinder assembly (1) is rotatably connected in the flat push trolley assembly (3), and the piston rod of the flat push oil cylinder assembly (1) is rotatably connected to one side of one of the connecting rod assemblies (2). One side of the connecting seat assembly (4) is detachably connected with a top drive body assembly (5).

2. A top drive push mechanism as claimed in claim 1, wherein: The derrick assembly (10) comprises a derrick lower body (1001), a derrick upper body (1002) penetrating the top of the derrick lower body (1001), and the derrick upper body (1002) and the derrick lower body (1001) are detachably connected. The upper end of the derrick lower body (1001) is provided with a limiting roller assembly (1003) at each corner, and the four limiting roller assemblies (1003) respectively abut the four corners of the derrick upper body (1002).

3. A top drive push mechanism as defined in claim 1, wherein: The lifting system (12) comprises a pulley assembly (1203) mounted on one side of the crown block assembly (11), a trolley (1201) mounted on the upper end of the top drive body assembly (5), and a steel wire rope (1202) jointly mounted between the trolley (1201) and the pulley assembly (1203).

4. A top drive push mechanism as defined in claim 1, wherein: The two ends of the flat push oil cylinder assembly (1) are provided with a hydraulic control system (8), and a displacement sensor assembly (9) is mounted on the piston rod of the flat push oil cylinder assembly (1).

5. A top drive push mechanism as defined in claim 1, wherein: The derrick assembly (10) is provided with a guide rail assembly (6), and the guide rail assembly (6) comprises an upper guide rail assembly and a lower guide rail assembly. The flat push trolley assembly (3) comprises (301), four groups (302) are mounted on both sides of the (301), and the four groups (302) on the same side form a unit, and two units (302) are connected with the upper guide rail assembly and the lower guide rail assembly, respectively.

6. A top drive push mechanism as defined in claim 1, wherein: The two connecting rod assemblies (2) are in a parallelogram structure.

7. A top drive push mechanism as defined in claim 1, wherein: The side of the connecting seat assembly (4) in contact with the top drive body assembly (5) is provided with a plurality of bolts at equal intervals, and one end of each of the plurality of bolts is screwed into the top drive body assembly (5).

8. A top drive push mechanism as defined in claim 1, wherein: The two sides of the flat push trolley assembly (3) are provided with limiting oil cylinder assemblies (7), and the connecting seat assembly (4) is located between the two limiting oil cylinder assemblies (7).

9. A top drive push mechanism as defined in claim 1, wherein: The flat push oil cylinder assembly (1) is located between the two connecting rod assemblies (2).

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