A rotary screwing device

Abstract

The present application relates to the field of well logging instrument accessory dismounting mechanical equipment, and particularly relates to a rotary screwing device, which comprises a rotating body and a clamping device installed on the rotating body, the clamping device is a hydraulic clamping device, and the hydraulic clamping device is matched with a rotary oil supply device; the rotary oil supply device comprises an oil supply block fixedly installed on the rotating body, the oil supply block is fixedly installed on the rotating body, a through hole is formed in the center of the oil supply block, an outer annular oil groove is arranged on the inner wall of the through hole, an oil supply inner cylinder is matched and installed on the inner wall of the through hole, the oil supply inner cylinder is fixed in the circumferential direction, the oil supply inner cylinder is provided with an annular inner cavity, the annular inner cavity is provided with an oil supply / back oil channel and a working oil channel, the working oil channel corresponds to the position of the outer annular oil groove, and the outer annular oil groove is in communication with the oil circuit interface of the hydraulic clamping device. The rotating body comprises a hydraulic motor and a planetary gear reducer, the transmission efficiency is high, and the failure rate is low; the hydraulic clamping device is matched and installed with the rotary oil supply device, and 360-degree rotation of the hydraulic clamping device is realized.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment for disassembling and assembling well logging instrument parts, and particularly to a rotary screwing device. Background Technology

[0002] Circular logging instruments, which contain internal cables, circuit boards, and hydraulic circuits, often require repeated disassembly and reassembly to meet pre-shipment performance tests. Larger and heavier instrument kits, with their large-diameter threaded connections, are typically installed vertically. During installation, the inner and outer sleeves must be tightened to ensure the inner rotating thread connects securely with the cylinder thread, thus minimizing manual labor.

[0003] The existing technology has the following defects: During the assembly process of the inner and outer components of the circular logging instrument, when the threads are not perpendicularly matched, there is a problem of thread damage or damage to the circuit board due to small internal gaps. At the same time, it is impossible to test and alarm in real time whether the inner and outer thread stops and guide sleeves are concentric and whether the guidance is smooth. After tightening, there are often problems with power-on, communication and pressure tests failing, resulting in rework with low detection efficiency.

[0004] Because installation and disassembly require prolonged force to rotate the instrument, and the fixed guide sleeve is prone to fatigue, this poses a significant challenge to installation and disassembly. Circular logging instruments require a large torque for disassembly / installation, which was initially done manually. This resulted in uncontrollable assembly quality, unpredictable assembly accuracy, low efficiency, high labor intensity, safety hazards, and high labor costs. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a rotary screwing device that can automatically screw and complete the disassembly and installation of large and heavy instrument kits, eliminate the hidden dangers of manual operation, reduce manpower requirements, ensure safe production, and improve work efficiency.

[0006] The technical solution adopted in this invention is:

[0007] A rotary screwing device includes a rotating body and a clamping device mounted on the rotating body. The clamping device is a radial hydraulic clamping device, and a rotary oil supply device is connected and matched below the hydraulic clamping device. The rotary oil supply device includes an oil supply block fixedly mounted on the rotating body. The oil supply block has a through hole at its center, and an outer annular oil groove is provided on the inner wall of the through hole. An oil supply inner cylinder is matched and installed on the inner wall of the through hole and is circumferentially fixed. The outer annular wall of the oil supply inner cylinder and the outer annular oil groove cooperate to form a closed oil passage. The oil supply inner cylinder also has an annular inner cavity, which has a supply / return oil passage and a working oil passage. The working oil passage is correspondingly connected to the closed oil passage formed by the outer annular wall of the oil supply inner cylinder and the outer annular oil groove. The outer annular oil groove is connected to the oil passage interface of the hydraulic clamping device.

[0008] The hydraulic clamping device has at least three sets and is evenly distributed circumferentially on the oil supply block. The hydraulic clamping device includes a hydraulic cylinder, a slider, a guide rail, and a clamping block. The edge of the oil supply block includes an outwardly protruding boss. The guide rail includes a first guide rail and a second guide rail fixedly installed on the boss. The hydraulic cylinder is fixedly installed between the first guide rail and the second guide rail. The piston rod of the hydraulic cylinder is connected to the slider. The slider and the guide rail form a sliding connection. The slider can move back and forth along the guide rail. The clamping block is fixed on the slider.

[0009] The upper end of the hydraulic clamping device is fitted with an annular synchronous turntable. The edge of the synchronous turntable includes outwardly extending protrusions, the number of which is equal to that of the hydraulic clamping device. Arc-shaped holes are opened on the protrusions, and rollers are installed in the arc-shaped holes. The rollers are installed on the upper end face of the slider of the hydraulic clamping device through screws. The rollers slide in fit with the arc-shaped holes, and the synchronous turntable rotates in a circular motion with the linear sliding of the slider, with its axis as the rotation axis.

[0010] The outer annular oil groove includes a first outer annular oil groove and a second outer annular oil groove. The oil supply block is radially provided with a first oil groove channel and a second oil groove channel that are respectively connected to the first outer annular oil groove and the second outer annular oil groove.

[0011] The oil supply block is also equipped with a sensing device, which includes a mounting block, a friction drive wheel, an encoder, and a fixed support component. The fixed support component includes a support shaft and a rotating arm disposed on the top of the support shaft. The bottom of the support shaft is mounted on the edge of the horizontal mounting plate of the rotary bracket via the mounting block. The friction drive wheel and the encoder are coaxially disposed at the other end of the rotating arm. The support shaft causes the friction drive wheel to elastically abut against the outer wall of the oil supply block.

[0012] The oil supply block is equipped with a guide wheel assembly, which includes a guide wheel and a guide wheel mounting base. The guide wheel is installed in contact with the outer edge of the synchronous turntable. The mounting surface of the guide wheel mounting base is provided with several adjustment holes, and the guide wheel is installed in any one of the adjustment holes.

[0013] The clamping block has an arc-shaped clamping surface on the side near the object being clamped, which is adapted to the outer surface of the object being clamped, and the clamping surface has a knurled groove.

[0014] The clamping block has an arc-shaped clamping surface on the side near the object being clamped, which is adapted to the outer surface of the object being clamped. A friction plate is movably installed on one side of the clamping surface, and the friction plate has a knurled groove.

[0015] The beneficial effects of this invention are:

[0016] This invention discloses a rotary screwing device integrating a rotating body, a hydraulic clamping device, a synchronous turntable, and a sensing device. The rotating body includes a hollow turntable and a geared motor, achieving high transmission efficiency and low failure rate. The hydraulic clamping device is mounted on the rotating body, and its matched rotary oil supply device enables 360° rotation. The output clamping block of the hydraulic clamping device can clamp a circular assembly, achieving clamping stability. The synchronous turntable on the hydraulic clamping device ensures that each group of hydraulic clamping devices operates in unison, achieving synchronous opening and closing. The synchronous turntable has internal rollers and external guide wheel assemblies, providing simultaneous internal and external guidance to ensure stable operation. The sensing device reads the rotational torque through an encoder and transmits it to a data platform. The data platform monitors the torque in real time, controls various parameters of the rotating body, and ensures the assembly parameters during the inner and outer sleeve assembly process of the circular detector. It also performs real-time testing and alarm verification of thread perpendicularity, internal and external thread stops, concentricity of the guide sleeve, and smooth guidance. This reduces the likelihood of failures in power-on, communication, and pressure testing after tightening, thereby improving work efficiency, reducing labor intensity, lowering labor costs, and eliminating safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the application of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 A cross-sectional installation diagram of the oil supply inner cylinder, rotating body, and oil supply block of the present invention;

[0020] Figure 4 This is a top view of the present invention;

[0021] Figure 5 This is a schematic diagram of the clamping device structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the clamping block of the clamping device of the present invention, which is movably mounted with a friction plate.

[0023] Figure 7 This is a top view of the oil supply block of the present invention;

[0024] Figure 8 for Figure 7 Cross-sectional view at point AA;

[0025] Figure 9 This is a cross-sectional installation diagram of the oil supply inner cylinder and oil supply block of the present invention;

[0026] Figure 10 This is a schematic diagram of the oil circuit structure of the oil supply inner cylinder, oil supply block, and clamping device of the present invention;

[0027] Figure 11 This is a partial cross-sectional schematic diagram of the oil supply block of the present invention;

[0028] Figure 12 This is a schematic diagram of the sensing device structure of the present invention.

[0029] In the diagram: 1-Rotating bracket; 2-Inner oil supply cylinder; 201-First oil port; 202-Second oil port; 203-First oil supply / return channel; 204-Second oil supply / return channel; 205-First working oil passage; 206-Second working oil passage; 207-Plug; 208-Pipe connector; 3-Rotating body; 301-Hollow turntable; 302-Gear motor; 4-Oil supply block; 401-Through hole; 402-Limiting groove; 403-First oil groove channel; 404-Second oil groove channel; 405-First outer annular oil groove; 406-Second outer annular oil groove; 407-Dustproof ring; 408-Dustproof ring pressure block; 409-First sealing ring; 410-Guide belt; 411-Second sealing ring; 412-Third sealing ring; 413 - Baffle; 414 Oil pipe connector; 415 Boss; 5 Sensor; 501 Mounting block; 502 Support shaft; 503 Rotating arm; 504 Friction drive wheel; 505 Encoder; 6 Hydraulic clamping device; 601 Hydraulic cylinder; 602 First guide rail; 603 Second guide rail; 604 Slider; 605 Clamping block; 6051 Knurled groove; 606 First connector; 607 Upper mounting plate; 608 Second connector; 609 Friction plate; 7 Synchronous turntable; 701 Raised edge; 702 Arc hole; 8 Roller; 801 Screw; 9 Guide wheel assembly; 901 Guide wheel; 902 Guide wheel mounting seat; 903 Adjustment hole; 10 Tool table; 11 Circular kit. Detailed Implementation

[0030] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, this invention will be further described in detail. It should be understood that the specific embodiments described herein are only for explaining this invention and are not intended to limit this invention.

[0031] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0032] like Figure 1-5As shown, a rotary screwing device includes a rotary support 1, a rotating body 3, a clamping device, and a sensing device 5. The rotary support 1 is a plate assembly, composed of a horizontal mounting plate and a vertical mounting plate. A set of mounting ribs is provided on each side of the lower end of the horizontal mounting plate for reinforcement. The rotating body 3 is mounted on the rotary support 1. The rotating body 3 includes a hollow turntable 301 and a reduction motor 302, which drives the hollow turntable 301 to rotate. The clamping device is mounted on the rotating body 3 and is a radial hydraulic clamping device 6. A rotary oil supply device is connected and matched below the hydraulic clamping device 6. The rotary oil supply device includes an oil supply block 4 fixedly mounted on the rotating body 3. The oil supply block 4 has a through hole 401 at its center, and an outer annular oil groove is provided on the inner wall of the through hole 401. An oil supply inner cylinder 2 is matched and installed on the inner wall of the through hole 401 and is circumferentially fixed. The outer annular wall of the inner oil supply cylinder 2 cooperates with the outer annular oil groove to form a closed oil passage. The inner oil supply cylinder 2 is also provided with an annular inner cavity, which is provided with a supply / return oil passage and a working oil passage. The working oil passage is correspondingly connected to the closed oil passage formed by the cooperation of the outer annular wall of the inner oil supply cylinder 2 and the outer annular oil groove. The outer annular oil groove is connected to the oil passage interface of the hydraulic clamping device 6. The oil supply block 4 is a moving part, which is set on the hollow turntable 301 of the rotating body 3 and can rotate with the hollow turntable 301. The inner oil supply cylinder 2, which is matched and installed in the through hole 401 of the oil supply block 4, passes through the hollow turntable 301 and is fixedly installed on the horizontal mounting plate of the rotary support 1. The oil supply block 4 is also equipped with a sensing device 5, which includes an encoder 505 and its mounting accessories, for taking the rotation torque and controlling the rotation parameters of the rotating body.

[0033] At least three sets of hydraulic clamping devices 6 shall be provided. Figure 4 , 5 As shown, this embodiment has three sets of hydraulic clamping devices 6. These three sets of hydraulic clamping devices 6 can simultaneously clamp towards the center, ensuring the axial accuracy of the clamped object and the stability of the clamping state. In practical applications, the number of hydraulic clamping devices 6 can be adapted to the shape of the product being clamped and the required clamping degree.

[0034] like Figure 4 , 5As shown, the edge of the oil supply block 4 in this embodiment includes outwardly protruding bosses 415, the number of which is the same as the number of hydraulic clamping devices 6; a limiting groove 402 is provided on the bosses 415, the limiting groove 402 is provided to securely install the hydraulic clamping device 6. Three sets of hydraulic clamping devices 6 are evenly distributed around the boss 415 of the oil supply block 4. The hydraulic clamping device 6 includes a hydraulic cylinder 601, a slider 604, a first guide rail 602 and a second guide rail 603, and a clamping block 605. The first guide rail 602 and the second guide rail 603 are fixedly installed in the limiting groove 402 of the boss 415. The hydraulic cylinder 601 is fixedly installed between the first guide rail 602 and the second guide rail 603. An upper mounting plate 607 is provided on the top of the hydraulic cylinder 601. The upper mounting plate 607 is installed and fixed on the upper end surface of the first guide rail 602 and the second guide rail 603. A first connector 606 and a second connector 608 are also provided on the cylinder body of the hydraulic cylinder 601. The piston rod of the hydraulic cylinder is connected to the slider 604. The slider 604 forms a sliding connection with the first guide rail 602 and the second guide rail 603. The slider 604 can move back and forth along the guide rail. The clamping block 605 is fixed on the slider 604. The clamping block 605 has an arc-shaped clamping surface on the side near the object being clamped, which matches the curvature of the outer surface of the object being clamped. The clamping surface has a longitudinal knurled groove 6051. Furthermore, in order to maintain the clamping friction of the knurled groove 6051 on the clamping surface of the clamping block 605, a friction plate 609 is movably installed on one side of the clamping surface of the clamping block 605. The friction plate 609 has a longitudinal knurled groove 6051.

[0035] like Figure 2 , 4 As shown, an annular synchronous turntable 7 is matched and installed at the upper end of the hydraulic clamping device 6. The inner diameter of the turntable 7 is larger than the diameter of the object being clamped. The edge of the synchronous turntable 7 includes outwardly extending protruding edges 701. The number of protruding edges 701 is equivalent to that of the hydraulic clamping device 6, with three sets. Arc-shaped holes 702 are opened on the protruding edges 701, and rollers 8 are installed in the arc-shaped holes 702. The rollers 8 are installed on the upper end face of the slider 605 of the hydraulic clamping device 6 through screws 801. The rollers 8 are slidably engaged with the arc-shaped holes 702, and the synchronous turntable 7 can rotate around its axis as it slides linearly with the slider to make circular motion.

[0036] like Figure 2 , 4 As shown, the oil supply block 4 is provided with a guide wheel assembly 9, which includes a guide wheel 901 and a guide wheel mounting base 902. The guide wheel 901 is installed in contact with the outer edge of the synchronous turntable 7. The upper mounting surface of the guide wheel mounting base 902 is provided with several adjustment holes 903, and the guide wheel is installed in any one of the adjustment holes 903.

[0037] like Figure 7 , 8As shown, the inner wall of the through hole 401 in the center of the oil supply block 4 is provided with a dustproof ring pressure block 408, a dustproof ring 407, a first sealing ring 409, a first outer annular oil groove 405, a guide strip 410, a second sealing ring 411, a second outer annular oil groove 406, a third sealing ring 412, and a baffle 413 from top to bottom; three sets of bosses 415 are evenly provided on the outer side of the cylinder, and a limit groove 402 is provided on the bosses 415 for fixing and installing the hydraulic clamping device 6.

[0038] like Figure 8 , Figure 10 , Figure 11 As shown, the outer annular oil groove provided on the inner wall of the through hole 401 at the center of the oil supply block 4 includes a first outer annular oil groove 405 and a second outer annular oil groove 406. The oil supply block 4 is radially provided with a first oil groove channel 403 communicating with the first outer annular oil groove 405. An oil pipe connector 414 is provided at the outer end of the first oil groove channel 403. The oil supply block 4 is also radially provided with a second oil groove channel 404 communicating with the second outer annular oil groove 406. An oil pipe connector 414 is also provided at the outer end of the second oil groove channel 404. Three sets of the first oil groove channel 403 and the second oil groove channel 404 are each provided radially along the circumference of the oil supply block 4 and are located between the two bosses 415.

[0039] like Figure 9 As shown, the oil supply inner cylinder 2 has an inverted T-shaped cylindrical cross-section and an annular inner cavity. The annular inner cavity is provided with a first oil port 201, a second oil port 202, a first oil supply / return channel 203, a second oil supply / return channel 204, a first working oil passage 205, a second working oil passage 206, a plug 207, and a pipe joint 208. The first oil supply / return channel 203 and the second oil supply / return channel 204 are machined axially along the annular inner cavity and are symmetrically arranged. The first working oil passage 205 and the second working oil passage 206 are arranged radially along the inner cavity of the annular cavity wall and are respectively arranged corresponding to the first outer annular oil groove 405 and the second outer annular oil groove 406. The first working oil passage 205 is connected to the first oil supply / return channel 203, and the second working oil passage 206 is connected to the second oil supply / return channel 204. A first oil port 201 and a second oil port 202 are provided on the outer side of the bottom of the oil supply inner cylinder 2. The first oil port 201 is connected to the first oil supply / return channel 203, and the second oil port 202 is connected to the second oil supply / return channel 204. Pipe joints 208 are connected to the first oil port 201 and the second oil port 202, which are connected to the oil supply tank by hoses. Each oil supply / return channel is vertically opened through the upper axis of the oil supply inner cylinder 2, and plugs 207 are provided at the upper and lower ends respectively.

[0040] like Figure 9 , Figure 10As shown, the two sets of supply / return oil channels provided in the annular cavity wall of the inner oil supply cylinder 2 are connected to the two sets of outer annular oil grooves provided in the oil supply block 4, forming two circulation routes for hydraulic oil: one route controls the extension of the hydraulic cylinder 601: hydraulic oil enters the first supply / return oil channel 203 from the first oil port 201 of the inner oil supply cylinder 2, enters the first outer annular oil groove 405 of the oil supply block 4 through the first working oil passage 205, enters the first oil groove channel 403, and enters the cavity of the hydraulic cylinder 601 of the hydraulic clamping device 6 through the pipeline connected to the hose by the oil pipe joint 414. After the hydraulic oil is injected into this line, the hydraulic cylinder 601 can output. The shaft extends; one control oil circuit controls the retraction of the hydraulic cylinder 601: hydraulic oil enters the second supply / return oil channel 204 from the second oil port 202 of the inner oil supply cylinder 2, enters the first outer annular oil groove 406 of the oil supply block through the second working oil passage 206, enters the first oil groove channel 404, and enters the cavity of the hydraulic cylinder 601 of the hydraulic clamping device 6 through the pipeline connected to the hose by the oil pipe joint 414. After the hydraulic oil is injected into this pipeline, the output shaft of the hydraulic cylinder 601 can be retracted; by changing the direction of hydraulic oil feed in the two oil circuits, the extension and retraction of the hydraulic cylinder 601 can be realized, thereby realizing the clamping and releasing of the hydraulic clamping device 6.

[0041] like Figure 12 As shown, the sensing device 5 includes a mounting block 501, a friction drive wheel 504, an encoder 505, and a fixed support component. The fixed support component includes a support shaft 502 and a rotating arm 503 disposed on the top of the support shaft 502. The bottom of the support shaft 502 is mounted on the edge of the horizontal mounting plate of the rotary bracket 1 via the mounting block 501. The friction drive wheel 504 and the encoder 505 are coaxially disposed at the other end of the rotating arm 503. The shaft causes the friction drive wheel 504 to elastically abut against the outer wall of the oil supply block 4. The sensing device 5 collects and feeds back the displacement data of the oil supply block 4 to the data platform, controls the operation of the motor of the rotating body 3, ensures the safe and effective disassembly of the circular kit, and completes the disassembly work.

[0042] In this embodiment, the hydraulic clamping device 6 is provided in three sets. Therefore, the first outer annular oil groove 405 and the second outer annular oil groove 406 in the oil supply block 4 are each provided in three sets, corresponding to the two sets of oil inlets of the hydraulic cylinder 601 in the hydraulic clamping device 6. The number of the first outer annular oil groove 405 and the second outer annular oil groove 406 in the oil supply block 4 corresponds to the number of hydraulic clamping devices 6.

[0043] like Figure 1As shown, in this embodiment, the rotary screwing device is mounted on the vertical mounting bracket of the tool table 10. The circular kit 11 passes through the rotary screwing device and is fixedly mounted on the horizontal workbench of the tool table 10 at the bottom. When the hydraulic clamping device 6 is activated, the extended oil path in the circulation route of the hydraulic oil between the oil supply block 4 and the oil supply inner cylinder 2 is activated, pushing the output shaft of the hydraulic cylinder 601 of the hydraulic clamping device 6 out, and the clamping block 605 is pushed out. The three sets of hydraulic clamping devices 6 operate simultaneously. Under the control of the synchronous turntable 7, the synchronicity of the clamping blocks 605 can be guaranteed. The clamping blocks 605 clamp the circular kit 11, and the hydraulic clamping device 6 stops operating. The rotating body 3 is activated, the hollow turntable 301 rotates, and the reduction motor 302 controls the forward or reverse rotation of the hollow turntable 301, driving the oil supply block 4 to rotate forward or reverse, thus completing the tightening or loosening of the circular kit 11. The rotary screwing device in this embodiment is also equipped with a sensor 5 responsible for collecting and feeding back the displacement data of the oil supply block 4 to the data platform, controlling the operation of the motor of the rotating body 3, ensuring the safe and effective disassembly of the circular kit 11, and completing the disassembly work. The rotating body 3 stops moving, the hydraulic clamping device 6 is started, the retraction oil circuit in the circulation route of the hydraulic oil between the oil supply block 4 and the oil supply inner cylinder 2 is started, the output shaft of the hydraulic cylinder 601 of the hydraulic clamping device 6 retracts, and the clamping block 605 retracts; under the control of the synchronous turntable 7, the three sets of hydraulic clamping devices 6 operate simultaneously, the clamping block 605 releases the circular kit 11, and the operation of the clamping device 6 stops; the circular kit 11 is removed from the tool table 10.

Claims

1. A rotary screwing device, comprising a rotating body (3) and a clamping device mounted on the rotating body (3), characterized in that: The clamping device is a radial hydraulic clamping device (6), and a rotary oil supply device is connected and matched below the hydraulic clamping device (6); the rotary oil supply device includes an oil supply block (4) fixedly installed on the rotating body (3); the oil supply block (4) has a through hole (401) in the center, and an outer annular oil groove is provided on the inner wall of the through hole (401). An oil supply inner cylinder (2) is matched and installed on the inner wall of the through hole (401), and the oil supply inner cylinder (2) is circumferentially fixed; the outer annular wall of the oil supply inner cylinder (2) and the outer annular oil groove cooperate to form a closed oil passage; the oil supply inner cylinder (2) is also provided with an annular inner cavity, and the annular inner cavity is provided with a supply / return oil passage and a working oil passage. The working oil passage is connected to the... The outer ring wall of the inner oil supply cylinder (2) and the outer ring oil groove form a closed oil passage corresponding to each other. The outer ring oil groove is connected to the oil passage interface of the hydraulic clamping device (6). The hydraulic clamping device (6) has at least three sets and is evenly distributed around the oil supply block (4). The hydraulic clamping device (6) includes a hydraulic cylinder (601), a slider (604), a guide rail, and a clamping block (605). The edge of the oil supply block (4) includes an outwardly protruding boss (415). The guide rail includes a first guide rail (602) and a second guide rail (603) fixedly installed on the boss (415). The hydraulic cylinder (601) is fixedly installed on the first guide rail (602) and the second guide rail (603). Between the rails (603), the piston rod of the hydraulic cylinder (601) is connected to the slider (604), the slider (604) and the guide rail form a sliding connection, the slider (604) can move back and forth along the guide rail, and the clamping block (605) is fixed on the slider (604); the upper end of the hydraulic clamping device (6) is matched with an annular synchronous turntable (7), the edge of the synchronous turntable (7) includes outwardly extending protrusions (701), the number of protrusions (701) is equal to that of the hydraulic clamping device (6), the protrusions (701) are provided with arc-shaped holes (702), and rollers (8) are provided in the arc-shaped holes (702); the rollers (8) are connected by screws The rod (801) passes through the upper end face of the slider (604) of the hydraulic clamping device (6); the roller (8) is slidably engaged with the arc-shaped hole (702); the synchronous turntable (7) rotates around its axis as the linear sliding of the slider (604); the oil supply block (4) is provided with a guide wheel assembly (9); the guide wheel assembly (9) includes a guide wheel (901) and a guide wheel mounting seat (902); the guide wheel (901) is abutted against the outer edge of the synchronous turntable (7); the mounting surface of the guide wheel mounting seat (902) is provided with several adjustment holes (903); the guide wheel (901) is installed in any one of the adjustment holes (903).

2. The rotary screwing device according to claim 1, characterized in that: The outer annular oil groove includes a first outer annular oil groove (405) and a second outer annular oil groove (406). The oil supply block (4) is radially provided with a first oil groove channel (403) and a second oil groove channel (404) that are respectively connected to the first outer annular oil groove (405) and the second outer annular oil groove (406).

3. The rotary screwing device according to claim 1, characterized in that: The oil supply block (4) is also equipped with a sensing device (5), which includes a mounting block (501), a friction drive wheel (504), an encoder (505), and a fixed support component. The fixed support component includes a support shaft (502) and a rotating arm (503) disposed on the top of the support shaft (502). The bottom of the support shaft (502) is mounted on the edge of the horizontal mounting plate of the rotary bracket (1) through the mounting block (501). The friction drive wheel (504) and the encoder (505) are coaxially disposed at the other end of the rotating arm (503). The support shaft (502) causes the friction drive wheel (504) to elastically abut against the outer wall of the oil supply block (4).

4. The rotary screwing device according to claim 1, characterized in that: The clamping block (605) has an arc-shaped clamping surface on the side near the object being clamped, and is adapted to the outer surface of the object being clamped. The clamping surface is provided with a knurled groove (6051).

5. A rotary screwing device according to claim 1, characterized in that: The clamping block (605) has an arc-shaped clamping surface on the side near the object being clamped, and is adapted to the outer side of the object being clamped. A friction plate (609) is movably installed on one side of the clamping surface, and the friction plate (609) has a knurled groove (6051).

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