A hydraulic power tongs main tong automatic reversing device

Abstract

The application discloses a hydraulic power tong main tong automatic reversing device, which comprises a ratchet wheel assembly, a pawl assembly and a driving assembly. The ratchet wheel assembly comprises a ratchet wheel and a reset rotary shaft. The driving assembly drives the ratchet wheel and the reset rotary shaft to rotate synchronously. The pawl assembly is matched with the ratchet wheel and enables the ratchet wheel to rotate in one direction. The hydraulic power tong main tong automatic reversing device does not need to change the internal structure of the original hydraulic power tong, and does not affect the manual conversion of the main tong to carry out the buckle loading and unloading operation. The conversion device can realize remote switching of the buckle loading and unloading state of the hydraulic power tong main tong. During the use of the small repair automatic equipment, the reset knob does not need to be manually rotated, the automation degree of the equipment is improved, the safety risk of personnel at the wellhead is reduced, and the operation efficiency can be obviously improved in the automatic installation of a plug valve or automatic sand washing operation.

Description

TECHNICAL FIELD

[0001] The present application relates to a well repair equipment, more particularly to a hydraulic power tong main tong automatic reversing device. BACKGROUND

[0002] At present, the minor repair automation equipment has been widely applied in various oil fields, and the hydraulic power tongs have realized automatic gear shifting, automatic make-up and break-out, automatic opening and closing, and automatic advancing and retreating. However, during the make-up and break-out, most of the hydraulic power tongs still rely on manual rotation of the reset knob by 180° to realize the reversing, and the working efficiency needs to be further improved. SUMMARY

[0003] Therefore, it is necessary to provide a hydraulic power tong main tong automatic reversing device aiming at the above technical problems.

[0004] In order to solve the above technical problems, the present application adopts the technical scheme as follows:

[0005] A hydraulic power tong main tong automatic reversing device, which comprises a ratchet assembly, a pawl assembly and a driving assembly, the ratchet assembly comprises a ratchet and a reset rotary shaft, the driving assembly drives the ratchet and the reset rotary shaft to rotate synchronously, and the pawl assembly cooperates with the ratchet and enables the ratchet to rotate in one direction.

[0006] As a preferred embodiment of the present application, the driving assembly is a pneumatic assembly.

[0007] As a preferred embodiment of the present application, the ratchet assembly comprises a positioning seat, the center of the positioning seat is provided with a positioning center hole, the two sides of the positioning seat are provided with positioning seat fixing holes, the positioning seat fixing holes are fixedly connected with the brake steel plate of the hydraulic power tong through positioning seat screws, the reset rotary shaft is rotatably arranged in the positioning center hole, the top of the reset rotary shaft is provided with a reset knob, the reset knob comprises an elongated knob main body, the center of the knob main body is provided with an annular knob sleeve, the sidewall of the knob sleeve is provided with a sleeve pin hole, the top of the reset rotary shaft is provided with a reset rotary shaft pin hole, the reset rotary shaft pin hole and the sleeve pin hole are connected through a pin, the head of the reset rotary shaft penetrates through the knob sleeve, and the reset rotary shaft and the knob sleeve are fixedly connected, the ratchet is arranged on the upper part of the reset knob, the ratchet comprises a plate-shaped ratchet base plate, the ratchet base plate is weldedly connected with the reset knob, four driving columns are arranged on the ratchet base plate,

[0008] The pawl assembly comprises a pawl base plate, the first base plate hole is fixedly connected with the brake steel plate of the hydraulic power tongs through a pawl screw, the second base plate hole is provided with a pawl screw rod, the pawl screw rod penetrates through the second base plate hole and is fixedly connected with the brake steel plate of the hydraulic power tongs, the top of the pawl screw rod is provided with a rotatable long strip-shaped pawl, the middle part of the pawl is provided with a pawl center hole, one side of the pawl center hole is provided with a pawl side hole, the head of the pawl screw rod penetrates through the pawl center hole and is fixedly connected with a pawl nut, the pawl side hole is provided with a spring fixing screw, and a return spring is arranged between the fixing screw and the spring fixing column,

[0009] The driving assembly comprises a cylinder assembly, and the head of the piston rod of the cylinder assembly is provided with a driving hinge seat.

[0010] As a preferred embodiment of the present application, the driving hinge seat comprises a pair of first hinge rings, the push block comprises a plate-shaped push plate, the inner side of the push plate is provided with a pair of second hinge rings, the second hinge rings are connected with the first hinge rings through connecting pins, and the connecting pins are provided with push torsional springs and push pins.

[0011] As a preferred embodiment of the present application, the driving assembly further comprises a first adjusting support, a second adjusting support and a third support, the cylinder assembly is arranged on the third support, the first adjusting support is provided with a first adjusting mounting slot, the second adjusting support is provided with a second adjusting mounting slot, and the third support is provided with a third adjusting mounting slot.

[0012] As a preferred embodiment of the present application, the hydraulic power tongs main tongs automatic reversing device further comprises a sensor assembly, and the sensor assembly is used for monitoring the position of the reset knob.

[0013] As a preferred embodiment of the present application, the sensor assembly comprises a sensor mounting support, the sensor mounting support is provided with a pair of sensing probes, and the side wall of the ratchet base plate is provided with a pair of position measuring screws.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] This invention provides an automatic reversing device for the main clamp of a hydraulic power tong. This device requires no alteration to the internal structure of the original hydraulic power tong and does not affect the manual switching of the main clamp's locking and unlocking operations. This switching device enables remote switching of the locking and unlocking states of the hydraulic power tong's main clamp. During the use of automated minor repair equipment, there is no need for manual rotation of the reset knob, improving the automation level of the equipment, reducing safety risks for personnel working at the wellhead, and significantly improving operational efficiency in automatic valve installation or automatic sand flushing operations. Attached Figure Description

[0016] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the automatic reversing device for the main clamp of the hydraulic power clamp according to the present invention.

[0018] Figure 2 for Figure 1 An exploded three-dimensional structural diagram of the automatic reversing device for the main clamp of the hydraulic power clamp.

[0019] Figure 3 for Figure 1 A three-dimensional structural diagram of the ratchet assembly of the automatic reversing device for the main clamp of the hydraulic power clamp.

[0020] Figure 4 for Figure 3 An exploded three-dimensional structural diagram of the ratchet assembly in the image;

[0021] Figure 5 for Figure 1 A three-dimensional structural diagram of the pawl assembly of the automatic reversing device of the hydraulic power pliers master jaw;

[0022] Figure 6 for Figure 5 An exploded view of the three-dimensional structure of the pawl component in the diagram;

[0023] Figure 7 for Figure 1 A three-dimensional structural diagram of the drive assembly of the automatic reversing device for the main clamp of the hydraulic power clamp.

[0024] Figure 8 for Figure 7 A three-dimensional structural diagram of the cylinder assembly of the drive component in the middle;

[0025] Figure 9 for Figure 8A magnified view of the details of region A in the diagram;

[0026] Figure 10 This is a schematic diagram of the operation of the hydraulic power pliers main clamp automatic reversing device of the present invention. At this time, the cylinder assembly is not started.

[0027] Figure 11 for Figure 10 A magnified view of the details of region B in the diagram;

[0028] Figure 12 This is a schematic diagram of the operation of the hydraulic power pliers main clamp automatic reversing device of the present invention. At this time, the cylinder assembly is started.

[0029] Figure 13 for Figure 12 A magnified view of the details of region C in the diagram;

[0030] Figure 14 This is a schematic diagram of the operation of the cylinder assembly of the present invention;

[0031] Figure 15 for Figure 14 A magnified view of the details of region D in the diagram;

[0032] Figure 16 This is a schematic diagram of another embodiment of the present invention;

[0033] Figure 17 for Figure 16 A magnified view showing the details of region E in the diagram. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0035] like Figure 1 and Figure 2 As shown, the hydraulic power pliers master automatic reversing device includes a ratchet assembly S1, a pawl assembly S2, and a drive assembly S3. The drive assembly S3 drives the ratchet assembly S1 to rotate. The pawl assembly S2 cooperates with the ratchet assembly S1, causing the ratchet assembly S1 to rotate in one direction.

[0036] like Figure 3 and Figure 4As shown, the ratchet assembly S1 comprises a positioning seat 3, the center of which is provided with a positioning center hole 31, and the two sides of which are provided with positioning seat fixing holes 32, which are fixedly connected with the brake steel plate 11 of the hydraulic power tongs through positioning seat screws 6. The positioning center hole 31 is provided with a reset rotary shaft 2 which can rotate, the top of which is provided with a reset knob 4, which comprises an elongated knob main body 41, the center of which is provided with an annular knob sleeve 42, the head of the reset rotary shaft 2 penetrates through the knob sleeve 42, and the reset rotary shaft 2 is fixedly connected with the knob sleeve 42. The upper part of the reset knob 4 is provided with a ratchet 5, which comprises a plate-shaped ratchet base plate 51, which is weldedly connected with the reset knob 4, and four driving columns 52 are arranged on the ratchet base plate 51.

[0037] It should be noted that the outer wall of the knob sleeve 42 is provided with a sleeve pin hole 421, and the top of the reset rotary shaft 2 is provided with a reset rotary shaft pin hole 211, which is connected with the sleeve pin hole 421 through a pin, so as to realize the synchronous rotation of the reset rotary shaft 2 and the reset knob 4.

[0038] As shown in Figure 5 and Figure 6 As shown, the pawl assembly S2 comprises a pawl base plate 20, which is provided with a first base plate hole 204, a second base plate hole 201, a spring fixing column 202 and a limiting column 203. The first base plate hole 204 is fixedly connected with the brake steel plate 11 of the hydraulic power tongs through a pawl screw 50. The second base plate hole 201 is provided with a pawl screw rod 40, which penetrates through the second base plate hole 201 and is fixedly connected with the brake steel plate 11 of the hydraulic power tongs. The top of the pawl screw rod 40 is provided with a rotatable elongated pawl 30. The middle part of the pawl 30 is provided with a pawl center hole 301, one side of which is provided with a pawl side hole 302. The head of the pawl screw rod 40 penetrates through the pawl center hole 301 and is fixedly connected with a pawl nut 80. The pawl side hole 302 is provided with a spring fixing screw 60, and the fixing screw 60 and the spring fixing column 202 are provided with a reset spring 70.

[0039] As shown in Figures 7 to 9 As shown, the driving assembly S3 comprises a first adjusting bracket 200, a second adjusting bracket 300 and a third bracket 400, and the third bracket 400 is provided with a pneumatic cylinder assembly 500. The first adjusting bracket 200 is fixed on the hydraulic power tongs main tongs shell through a screw rod.

[0040] The head of the piston rod of the cylinder assembly 500 is provided with a driving hinge seat 501, and the driving hinge seat 501 is provided with a rotatable push block 502. The driving hinge seat 501 comprises a pair of first hinge rings 5011, and the push block 502 comprises a plate-shaped push plate 5021. The inner side of the push plate 5021 is provided with a pair of second hinge rings 5022. The second hinge rings 5022 are connected with the first hinge rings 5011 through a connecting pin 503. The connecting pin 503 is provided with a push torsional spring 504 and a push pin 505.

[0041] It should be noted that the driving assembly S3 is remotely controlled through a pneumatic pipeline. In addition, the piston rod of the cylinder assembly 500 is hexagonal, so that the piston rod cannot rotate circumferentially in the cylinder.

[0042] The working mode of the hydraulic power tong main tong automatic reversing device will be described below. For the convenience of description, the driving column 52A and the driving column 52B are marked respectively.

[0043] As shown in Figure 10 and Figure 11 , in the normal state, the cylinder assembly 500 is in the retracted state.

[0044] As shown in Figure 12 and Figure 13 , when it is necessary to switch the make-up and break-out directions, the hydraulic power tong of the minor repair automation device has been automatically aligned with the opening, that is, the main tong jaw plate frame opening is aligned with the main tong gear opening, and the main tong gear opening is aligned with the main tong housing opening. The cylinder assembly 500 is started, and the push block 502 starts to contact the driving column 52A. The piston rod continues to be pushed out, and the push block 502 pushes the driving column 52A, so that the entire ratchet base plate 51 rotates counterclockwise by 90° along the direction F1. In the process of counterclockwise rotation of the ratchet base plate 51, the driving column 52B contacts the pawl 30 and presses the pawl 30, so that the pawl 30 rotates clockwise by a small angle along the direction F2, and at the same time, the reset spring 70 is stretched. When the driving column 52B slides through the pawl 30 and is separated from the pawl 30, under the action of the reset spring 70, the pawl 30 is quickly reset and again abuts against the limiting column 203.

[0045] Then, the piston rod of the cylinder assembly 500 is retracted in turn, and the above-mentioned action is repeated. The push block 502 pushes the driving column 52B, and the ratchet base plate 51 rotates counterclockwise by 90° along the direction F1 again. At this time, the entire ratchet base plate 51 rotates by 180°.

[0046] Since the ratchet base plate 51 synchronously drives the reset knob 4 and the reset rotating shaft 2, the reset knob 4 also rotates by 180°. Therefore, through the two extension and retraction actions of the cylinder assembly 500, the reset knob 4 is rotated by 180°, thereby achieving the purpose of switching the make-up and break-out directions.

[0047] Need to explain, as Figure 14 and Figure 15 As shown in the process of retraction of the piston rod, push block 502 will be turned up, so that the push block 502 will not be blocked by the drive column 52B. After the piston rod retraction, the entire drive assembly S3 is not in the rotation range of the main tongs rotating part, the drive assembly S3 does not affect the main tongs, unloading buckle.

[0048] As Figure 16 and 17 As shown in another embodiment of the application.

[0049] The hydraulic power tongs main tongs automatic reversing device further comprises a sensor assembly 33 arranged on the tongs head cover.

[0050] The sensor assembly 33 is used to monitor the position of the reset knob 4. In this way, the up and unloading buckle state of the hydraulic tongs can be automatically identified, and this signal can be written into the control program of the small repair automation equipment, so that the automatic installation of the stop valve and the automatic sand washing operation are more intelligent and the process switching is more smooth. Specifically, the sensor assembly 33 comprises a sensor mounting bracket 331, and a pair of sensing probes 332 are arranged on the sensor mounting bracket 331. A pair of position measuring screws 53 are arranged on the side wall of the ratchet base plate 51, and the sensing probes 332 are matched with the position measuring screws 53.

[0051] The hydraulic power tongs main tongs automatic reversing device does not need to change the internal structure of the original hydraulic power tongs, and does not affect the manual conversion of the up and unloading buckle operation of the main tongs. The conversion device can realize remote switching of the up and unloading buckle state of the hydraulic power tongs main tongs, and does not need to manually rotate the reset knob during the use of the small repair automation equipment, thereby improving the automation degree of the equipment, reducing the safety risk of personnel in the wellhead operation, and significantly improving the operation efficiency in the automatic installation of the stop valve or the automatic sand washing operation.

[0052] Not limited to this, any changes or replacements not thought of through creative labor should be covered within the protection scope of the application. Therefore, the protection scope of the application should be limited by the protection scope defined in the claims.

Claims

1. A hydraulic power tong main tong automatic reversing device, characterized in that, The hydraulic power tongs main tongs automatic reversing device contains a ratchet assembly (S1), a pawl assembly (S2) and a driving assembly (S3), The ratchet assembly (S1) contains a ratchet (5) and a reset rotary shaft (2), the driving assembly (S3) drives the ratchet (5) and reset rotary shaft (2) to rotate synchronously, The pawl assembly (S2) is matched with the ratchet (5), and the ratchet (5) is made to rotate in one direction, The driving assembly (S3) is a pneumatic assembly, The ratchet assembly (S1) contains a positioning seat (3), the center of the positioning seat (3) is provided with a positioning center hole (31), both sides of the positioning seat (3) are provided with positioning seat fixing holes (32), the positioning seat fixing holes (32) are fixedly connected with the brake steel plate (11) of the hydraulic power tongs through positioning seat screws (6), the reset rotary shaft (2) is rotatably arranged in the positioning center hole (31), the top of the reset rotary shaft (2) is provided with a reset knob (4), the reset knob (4) contains an elongated knob main body (41), the center of the knob main body (41) is provided with an annular knob sleeve (42), the sidewall of the knob sleeve (42) is provided with a sleeve pin hole (421), the top of the reset rotary shaft (2) is provided with a reset rotary shaft pin hole (211), the reset rotary shaft pin hole (211) and the sleeve pin hole (421) are connected through a pin, the head of the reset rotary shaft (2) penetrates through the knob sleeve (42), and the reset rotary shaft (2) and the knob sleeve (42) are fixedly connected, the ratchet (5) is arranged on the upper portion of the reset knob (4), the ratchet (5) contains a plate-shaped ratchet base plate (51), the ratchet base plate (51) is weldedly connected with the reset knob (4), and four driving columns (52) are arranged on the ratchet base plate (51). The pawl assembly (S2) comprises a pawl base plate (20), the first base plate hole (204) is fixedly connected with the brake steel plate (11) of the hydraulic power tongs through the pawl screw (50), the second base plate hole (201) is provided with the pawl screw rod (40), the pawl screw rod (40) penetrates the second base plate hole (201) and is fixedly connected with the brake steel plate (11) of the hydraulic power tongs, the top of the pawl screw rod (40) is provided with the rotatable long strip-shaped pawl (30), the middle part of the pawl (30) is provided with the pawl center hole (301), one side of the pawl center hole (301) is provided with the pawl side hole (302), the head of the pawl screw rod (40) penetrates the pawl center hole (301) and is fixedly connected with the pawl nut (80), the spring fixing screw (60) is arranged in the pawl side hole (302), the reset spring (70) is arranged between the fixing screw (60) and the spring fixing column (202), The driving assembly (S3) comprises a cylinder assembly (500), the head of the piston rod of the cylinder assembly (500) is provided with a driving hinge seat (501), and the driving hinge seat (501) is provided with a rotatable push block (502).

2. The hydraulic power tongs main jaw automatic reversing device according to claim 1, characterized in that, The driving hinge seat (501) comprises a pair of first hinge rings (5011), the push block (502) comprises a plate-shaped push plate (5021), the inner side of the push plate (5021) is provided with a pair of second hinge rings (5022), the second hinge rings (5022) are connected with the first hinge rings (5011) through connecting pins (503), and the connecting pins (503) are provided with push torsional springs (504) and push pins (505).

3. The hydraulic power tongs main jaw automatic reversing device according to claim 1, characterized in that, The driving assembly (S3) further comprises a first adjusting support (200), a second adjusting support (300) and a third support (400), the cylinder assembly (500) is arranged on the third support (400), the first adjusting support (200) is provided with a first adjusting mounting slot (2001), the second adjusting support (300) is provided with a second adjusting mounting slot (3001), and the third support (400) is provided with a third adjusting mounting slot (5001).

4. The hydraulic power tong master tong reversing device of claim 1, wherein, The hydraulic power tongs main jaw automatic reversing device further comprises a sensor assembly (33), and the sensor assembly (33) is used for monitoring the position of the reset knob (4).

5. The hydraulic power tong master tong reversing device of claim 4, wherein, The sensor assembly (33) comprises a sensor mounting bracket (331) provided with a pair of inductive probes (332), and the side wall of the ratchet base plate (51) is provided with a pair of position measuring screws (53) matched with the inductive probes (332).

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