Turntable based on under-pressure operation machine

Abstract

The invention relates to a rotary table based on an under-pressure operation machine, and belongs to the technical field of under-pressure operation machines, the rotary table comprises a rotary table body, a lubricating cavity is formed in the rotary table body, hydraulic oil is injected into the lubricating cavity, a center gear and a driving gear are arranged in the rotary table body and located in the lubricating cavity, and the center gear is used for sleeving a pipe column; the driving gears are located on the periphery of the center gear and engaged with the center gear, a hydraulic motor used for driving the driving gears to rotate is arranged on the rotating disc body, and the multiple driving gears are evenly distributed in the circumferential direction of the center gear; a filtering device is arranged in the lubricating cavity and used for adsorbing impurities in hydraulic oil. The invention has the advantage of ensuring the transmission efficiency of the gear pair.

Description

Technical Field

[0001] The present application relates to the technical field of belt pressure working machines, and in particular to a turntable based on a belt pressure working machine. Background Art

[0002] At present, the scope of pressure drilling has involved: underbalanced drilling, slim hole drilling, side drilling, lifting of tubing under pressure, lifting of casing under pressure, lifting of liner under pressure, pressure drilling cement plug, pressure drilling bridge plug, pressure drilling sand plug, acidizing, fracturing, salvage, milling, cement squeezing or scrapped well operations, etc.

[0003] The rotation operation process of the existing belt pressure operation machine is as follows: first, the mobile slip group is closed, the pipe string is clamped, the fixed slip group is opened, and then the hydraulic pipeline on the mobile slip group is removed. Then the lifting hydraulic cylinder and the turntable are actuated at the same time to drive the mobile slip group and the pipe string to move upward or downward while rotating. After the pipe string moves upward or downward into place, the hydraulic pipeline on the mobile slip is restored, and then the fixed slip group is closed, the pipe string is clamped, and finally the mobile slip group is opened. The lifting hydraulic cylinder drives the mobile slip group to move downward or upward back to its original position, and the above steps are repeated until the rotation operation is completed.

[0004] However, when the turntable drives the pipe string, the hydraulic motor is started, the hydraulic motor drives the gear pair to rotate, the gear pair rotates and drives the pipe string to rotate. The high-speed rotation of the gear pair will cause the temperature to rise and thus affect the transmission efficiency. Summary of the invention

[0005] In order to ensure the transmission efficiency of the gear pair, the present application provides a turntable based on a belt pressure working machine.

[0006] The present application provides a turntable based on a belt pressure working machine adopts the following technical solution: A turntable based on a belt pressure working machine includes a turntable body, a lubrication cavity is opened in the turntable body, the lubrication cavity is used to inject hydraulic oil, a center gear and a drive gear are arranged in the turntable body and in the lubrication cavity, the center gear is used to sleeve the pipe column, the drive gear is located on the periphery of the center gear and meshes with the center gear, a hydraulic motor for driving the drive gear to rotate is arranged on the turntable body, and the drive gear is arranged in multiple numbers and evenly arranged along the circumference of the center gear; a filter device is arranged in the lubrication cavity, and the filter device is used to absorb impurities in the hydraulic oil.

[0007] Optionally, the filtering device includes a rectangular frame arranged in the lubrication cavity and a first magnet arranged in the rectangular frame, the first magnet is cylindrical and rotatably arranged in the rectangular frame, the first magnet is used to absorb metal debris in the hydraulic oil, the filtering device also includes a film rolled up on the first magnet, the metal debris absorbed by the first magnet is attached to the film, and the filtering device also includes a winding member, the winding member is used to roll up the film to wrap the metal debris in the film.

[0008] Optionally, the winding member includes a winding shaft rotatably arranged in a rectangular frame, the winding shaft is located between adjacent first magnets, the length direction and the rotation axis of the winding shaft are parallel to the length direction of the first magnets, and a pulling member is provided on the winding shaft, and the pulling member acts on the end of the film to make the film rolled up on the winding shaft.

[0009] Optionally, a tear notch is provided on the film, and the length direction of the tear notch is perpendicular to the length direction of the film. The tear notch is used to break the film when the film is rolled up by the winding shaft. The pulling member includes a second magnet provided on the film, and the second magnet is in the shape of a long strip. The second magnet is located on one side of the tear notch. An electromagnet is provided on the winding shaft, and the second magnet is adsorbed on the first magnet. After the electromagnet is energized, the second magnet is adsorbed and fixed on the winding shaft.

[0010] Optionally, a first motor is provided on the rectangular frame and the output shaft enters the rectangular frame, the winding shaft is provided on the output shaft of the first motor, the first motor drives the winding shaft to rotate to wind up the film, and when the film is wound up, the outer side of the film is wound on the winding shaft.

[0011] Optionally, a notch is provided on the turntable body, the notch is connected to the lubrication cavity, the notch is located above the turntable body, and after the rectangular frame is inserted into the lubrication cavity through the notch, the upper end surface of the rectangular frame is snapped into the notch to close the notch; a positioning groove is provided on the bottom wall of the lubrication cavity, and the bottom wall of the rectangular frame is snapped into the positioning groove.

[0012] Optionally, a receiving platform is protruding from the lower side of the inner wall of the notch, the peripheral wall of the upper end surface of the rectangular frame is stepped and received on the receiving platform, and a sealing ring is provided on the peripheral wall of the upper end surface of the rectangular frame, and the sealing ring is clamped and deformed between the inner wall of the notch and the upper end surface of the rectangular frame.

[0013] Optionally, liquid guiding hoods are provided on both sides of the rectangular frame, and the outer wall of the liquid guiding hood is fixedly provided on the inner wall of the lubrication cavity. The liquid guiding hood includes a rectangular hood and a rectangular tube provided on the rectangular hood. The rectangular tube is connected to the rectangular hood. There are multiple rectangular tubes, and the rectangular tubes are located between adjacent first magnets. The hydraulic oil enters the rectangular hood and flows through the rectangular tubes to between the first magnets and then flows through between the first magnets to the rectangular tube on the other side.

[0014] Optionally, a compaction roller is provided in the rectangular frame, and the compaction roller is located on one side of the winding shaft. The length direction and the rotation axis of the compaction roller are parallel to the length direction of the winding shaft. The compaction roller is slidably set on the rectangular frame, and a driving member is provided on the rectangular frame for driving the compaction roller to be pressed onto the winding shaft so that the film is compacted on the winding shaft.

[0015] Optionally, an airbag is sleeved on the peripheral wall of the compacting roller, and the airbag is in an expanded state to compact the film onto the winding shaft.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: Inject hydraulic oil into the lubrication cavity, immerse the center gear and the drive gear in the hydraulic oil, start the hydraulic motor, the hydraulic motor drives the drive gear to rotate, the drive gear rotates to drive the center gear, the center gear rotates to drive the pipe column, under the action of the hydraulic oil, the center gear and the drive gear are cooled, which reduces the possibility of high-temperature failure of the center gear and the drive gear, and reduces the possibility of damage to the center gear and the drive gear, thereby ensuring the transmission efficiency of the gear pair; When the center gear and the driving gear run for a long time, the debris on the gears will fall into the hydraulic oil. At this time, under the action of the filtering device, the debris in the hydraulic oil is adsorbed, which reduces the possibility of the debris damaging the gear pair and the pipe column, and ensures the transmission efficiency of the gear pair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a turntable based on a belt pressure working machine according to an embodiment of the present application; Figure 2 It is a cross-sectional view of a turntable based on a belt pressure working machine according to an embodiment of the present application; Figure 3 It is a top view of a turntable based on a belt pressure working machine according to an embodiment of the present application; Figure 4 It is a schematic diagram of the internal structure of a turntable based on a belt pressure working machine according to an embodiment of the present application; Figure 5 It is a schematic diagram of the installation of a rectangular frame and a turntable body in a turntable based on a belt pressure working machine according to an embodiment of the present application; Figure 6It is a schematic diagram of the arrangement of a filtering device in a rotary disk based on a belt pressure working machine according to an embodiment of the present application; Figure 7 It is a schematic diagram of a liquid guide cover and a filter device in a turntable based on a belt pressure working machine according to an embodiment of the present application; Figure 8 It is a structural schematic diagram of a filter device in a rotary disk based on a belt pressure working machine according to an embodiment of the present application; Fig. 9 It is a cross-sectional view of a rectangular frame in a turntable based on a belt pressure working machine according to an embodiment of the present application; Fig.10 It is a structural schematic diagram of a first magnet and a winding shaft in a turntable based on a belt pressure working machine according to an embodiment of the present application.

[0018] Description of reference numerals: 1. turntable body; 2. lubrication chamber; 3. central gear; 4. driving gear; 5. hydraulic motor; 6. Filter device; 61. Rectangular frame; 62. First magnet; 63. Film; 64. Winding shaft; 65. Second magnet; 66. Electromagnet; 7. tearing notch; 8. first motor; 9. compaction roller; 10. lead screw; 11. waterproof motor; 12. notch; 13. Liquid-conducting cover; 131. Rectangular cover; 132. Rectangular tube. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 -Attached Fig.10 This application is described in further detail.

[0020] The embodiment of the present application discloses a turntable based on a belt pressure working machine. Figure 1 and Figure 2 The turntable of the belt pressure working machine includes a turntable body 1, a lubrication cavity 2 is provided in the turntable body 1, and the lubrication cavity 2 is used to inject hydraulic oil; Combination Figure 3 and Figure 4A center gear 3 and a driving gear 4 are arranged in the turntable body 1 and in the lubrication cavity 2. The center gear 3 is used for sleeve pipe column. The driving gear 4 is located at the periphery of the center gear 3 and meshes with the center gear 3. A hydraulic motor 5 for driving the driving gear 4 to rotate is arranged on the turntable body 1. A plurality of driving gears 4 are arranged and are evenly arranged along the circumference of the center gear 3. The center gear 3 and the driving gear 4 are immersed in hydraulic oil. The hydraulic motor 5 is started, and the hydraulic motor 5 drives the driving gear 4 to rotate. The driving gear 4 rotates to drive the center gear 3, and the center gear 3 rotates to drive the pipe column. Under the action of the hydraulic oil, the center gear 3 and the driving gear 4 are cooled, thereby reducing the possibility of high-temperature failure of the center gear 3 and the driving gear 4, and at the same time reducing the possibility of damage to the center gear 3 and the driving gear 4, thereby ensuring the transmission efficiency of the gear pair.

[0021] Combination Figure 3 and Figure 4 In the embodiment of the present application, four hydraulic motors 5 are provided, and the four hydraulic motors 5 are evenly arranged. The four hydraulic motors 5 provide a larger torque for the pipe string, which facilitates the rotation of the pipe string.

[0022] Reference Figure 5 and Figure 6 In the embodiment of the present application, a filter device 6 is provided in the lubrication chamber 2, and the filter device 6 is used to absorb impurities in the hydraulic oil; under the action of the filter device 6, the debris in the hydraulic oil is absorbed, thereby reducing the possibility of the debris damaging the gear pair and the pipe column, and ensuring the transmission efficiency of the gear pair.

[0023] Reference Figure 7-10 In the embodiment of the present application, the filtering device 6 includes a rectangular frame 61 arranged in the lubrication chamber 2 and a first magnet 62 arranged in the rectangular frame 61. A plurality of the first magnets 62 are arranged and evenly arranged in the rectangular frame 61. The first magnets 62 are arranged at intervals. The first magnets 62 are cylindrical and rotatably arranged in the rectangular frame 61. The first magnets 62 are used to absorb metal debris in the hydraulic oil. When the metal debris is processed, the hydraulic motor 5 is started, and the hydraulic motor 5 drives the drive gear 4 and the center gear 3 to rotate. The rotation of the center gear 3 drives the hydraulic oil to flow in the lubrication chamber 2. The hydraulic oil passes through the gap between the first magnets 62. The metal debris in the hydraulic oil is adsorbed on the first magnet 62 during the flow process, thereby reducing the metal debris carried in the hydraulic oil and reducing the possibility of damage to the drive gear 4 and the center gear 3. The first magnet 62 is rotatably arranged in the rectangular frame 61, which facilitates the first magnet 62 to change the direction facing the hydraulic oil, and facilitates the metal debris to be adsorbed on the remaining part of the first magnet 62, thereby improving the adsorption effect of the first magnet 62 on the metal debris.

[0024] Reference Figure 7-10Furthermore, the filtering device 6 also includes a film 63 rolled up on the first magnet 62, and the metal debris adsorbed by the first magnet 62 adheres to the film 63; when the first magnet 62 adsorbs the metal debris, the metal debris is adsorbed on the film 63 due to the magnetic field. Under the action of the film 63, the metal debris and the first magnet 62 are relatively separated, thereby facilitating the removal of the metal debris on the first magnet 62 later.

[0025] Reference Figure 7-10 The filtering device 6 also includes a winding piece, which is used to roll up the film 63 and wrap the metal debris in the film 63; when there are a lot of metal debris adsorbed on the film 63, the metal debris hinders the magnetic field generated by the first magnet 62, causing the metal debris to easily fall into the hydraulic oil. Therefore, when there are a lot of metal debris on the film 63, the metal debris is included in the film 63 by the winding piece, thereby reducing the possibility of the metal debris falling into the hydraulic oil again.

[0026] Reference Figure 7-10 In the embodiment of the present application, the winding member includes a winding shaft 64 rotatably arranged in a rectangular frame 61, and the winding shaft 64 is located between adjacent first magnets 62. The length direction and the rotation axis of the winding shaft 64 are parallel to the length direction of the first magnet 62. A pulling member is arranged on the winding shaft 64, and the pulling member acts on the end of the film 63 to make the film 63 rolled up on the winding shaft 64; when the film 63 wraps the metal debris, the pulling member first acts on the end of the film 63 to fix the end of the film 63 on the winding shaft 64, and then the winding shaft 64 rotates, and the winding shaft 64 rotates to roll up the film 63, and the film 63 with the metal debris side is rolled up on the inside, and the metal debris is wrapped in the film 63, and the operation is simple and convenient.

[0027] Reference Figure 7-10 In order to facilitate the film 63 to be rolled up on the winding shaft 64, a tear notch 7 is provided on the film 63. The length direction of the tear notch 7 is perpendicular to the length direction of the film 63. The tear notch 7 is used to break the film 63 when the winding shaft 64 rolls up the film 63. Under the action of the tear notch 7, the film 63 is torn apart when the winding shaft 64 rolls up the film 63, so that the film 63 without metal debris attached is exposed to absorb the metal debris.

[0028] Reference Figure 7-10In the embodiment of the present application, the pulling member includes a second magnet 65 arranged on the film 63, the second magnet 65 is in the shape of a long strip, the second magnet 65 is located on one side of the tear notch 7, an electromagnet 66 is arranged on the winding shaft 64, the second magnet 65 is adsorbed on the first magnet 62, and after the electromagnet 66 is energized, the second magnet 65 is adsorbed and fixed on the winding shaft 64; when the film 63 is wound, the electromagnet 66 is first energized, and the electromagnet 66 is energized to adsorb the second magnet 65, and the second magnet 65 is adsorbed on the electromagnet 66, and the end of the film 63 is fixed on the winding shaft 64, and the operation is simple and convenient.

[0029] Reference Figure 7-10 In the embodiment of the present application, a first motor 8 is provided on the rectangular frame 61 and the output shaft enters the rectangular frame 61, and the winding shaft 64 is provided on the output shaft of the first motor 8. The first motor 8 drives the winding shaft 64 to rotate to wind up the film 63. When the film 63 is wound up, the outer side of the film 63 is wound on the winding shaft 64, and the first motor 8 drives the winding shaft 64 to rotate in a direction opposite to the rotation direction of the first magnet 62.

[0030] Reference Figure 8 and Fig. 9 In the embodiment of the present application, in order to facilitate fixing the end of the torn film 63 on the winding shaft 64, a compacting roller 9 is arranged in the rectangular frame 61, and the compacting roller 9 is located on one side of the winding shaft 64. The length direction and the rotation axis of the compacting roller 9 are parallel to the length direction of the winding shaft 64. The compacting roller 9 is slidably arranged on the rectangular frame 61, and the sliding direction of the compacting roller 9 is perpendicular to the rectangular frame 61. A driving member for driving the compacting roller 9 to be pressed on the winding shaft 64 so that the film 63 is compacted on the winding shaft 64 is arranged on the rectangular frame 61. The driving member includes a lead screw 10 rotatably arranged in the rectangular frame 61, and mounting members at both ends of the compacting roller 9. The seat is threadedly connected to the screw 10, and a waterproof motor 11 is provided on the rectangular frame 61 for driving the screw 10 to rotate; after the film 63 is rolled up by the winding shaft 64, the end of the film 63 floats in the hydraulic oil, and then the waterproof motor 11 is started, and the waterproof motor 11 drives the screw 10 to rotate. The rotation of the screw 10 drives the compaction roller 9 to move toward the winding shaft 64, so that the compaction roller 9 is compacted on the winding shaft 64. Then, after the first motor 8 is started, the first motor 8 drives the winding shaft 64 to rotate. The rotation of the winding shaft 64 drives the end of the film 63 to pass through the compaction roller 9, and then the end of the film 63 is compacted on the winding shaft 64. The operation is simple and convenient.

[0031] Reference Figure 8 and Fig. 9 In order to reduce the possibility of the compacting roller 9 damaging the film 63, an airbag is sleeved on the peripheral wall of the compacting roller 9. The airbag is in an expanded state and compacts the film 63 onto the winding shaft 64. Under the action of the airbag, on the one hand, the compaction effect of the film 63 is improved, and on the other hand, the possibility of the film 63 being damaged is reduced.

[0032] Reference Figure 5 and Figure 8 In order to facilitate the removal of metal scraps wrapped in the film 63, a notch 12 is provided on the turntable body 1, and the notch 12 is connected to the lubrication chamber 2. The notch 12 is located above the turntable body 1. After the rectangular frame 61 is inserted into the lubrication chamber 2 through the notch 12, the upper end surface of the rectangular frame 61 is clamped in the notch 12 to close the notch 12; a positioning groove is provided on the bottom wall of the lubrication chamber 2, and the bottom wall of the rectangular frame 61 is clamped in the positioning groove; when removing the metal scraps, the rectangular frame 61 is removed from the notch 12, and then the film 63 is removed from the winding shaft 64, and the operation is simple and convenient; when installing the rectangular frame 61, the rectangular frame 61 is inserted into the lubrication chamber 2 from the notch 12, and the bottom of the rectangular frame 61 is inserted into the positioning groove, and the rectangular frame 61 is fixed in the lubrication chamber 2.

[0033] Reference Figure 5 and Figure 8 In order to improve the sealing performance between the rectangular frame 61 and the notch 12, a receiving platform is protruded on the lower side of the inner wall of the notch 12, and the peripheral wall of the upper end surface of the rectangular frame 61 is stepped and received on the receiving platform. A sealing ring is provided on the peripheral wall of the upper end surface of the rectangular frame 61, and the sealing ring is clamped and deformed between the inner wall of the notch 12 and the upper end surface of the rectangular frame 61; under the action of the sealing ring, the possibility of leakage of hydraulic oil through the notch 12 is reduced.

[0034] Reference Figure 6 and Figure 7 In order to reduce the obstruction of the first magnet 62 and the winding shaft 64 to the flow of hydraulic oil, in the embodiment of the present application, a liquid guide cover 13 is provided on both sides of the rectangular frame 61, and the outer wall of the liquid guide cover 13 is fixedly provided on the inner wall of the lubrication chamber 2. The liquid guide cover 13 includes a rectangular cover 131 and a rectangular tube 132 provided on the rectangular cover 131. The rectangular tube 132 is connected to the rectangular cover 131. There are multiple rectangular tubes 132. The rectangular tubes 132 are located between adjacent first magnets 62. The hydraulic oil enters the rectangular cover 131 and flows through the rectangular tubes 132 to the first magnets 62 and then flows through the first magnets 62 to the rectangular tubes 132 on the other side. When the hydraulic oil flows driven by the central gear 3 and the driving gear 4, the hydraulic oil enters the rectangular cover 131 and then moves out through the rectangular tube 132. The hydraulic oil flowing out of the rectangular tube 132 enters between the first magnets 62, thereby reducing the obstruction of the first magnet 62 to the hydraulic oil, thereby facilitating the flow of the hydraulic oil.

[0035] The implementation principle of a turntable based on a belt pressure working machine in the embodiment of the present application is: Inject hydraulic oil into the lubrication chamber 2, immerse the center gear 3 and the drive gear 4 in the hydraulic oil, start the hydraulic motor 5, and the hydraulic motor 5 drives the drive gear 4 to rotate. The rotation of the drive gear 4 drives the center gear 3 to rotate, and the rotation of the center gear 3 drives the pipe column to rotate. Under the action of the hydraulic oil, the center gear 3 and the drive gear 4 are cooled, thereby reducing the possibility of high-temperature failure of the center gear 3 and the drive gear 4, and at the same time reducing the possibility of damage to the center gear 3 and the drive gear 4, thereby ensuring the transmission efficiency of the gear pair; When processing metal debris, start the hydraulic motor 5, which drives the drive gear 4 and the center gear 3 to rotate. The rotation of the center gear 3 drives the hydraulic oil to flow in the lubrication chamber 2. The hydraulic oil passes through the gap between the first magnets 62. The metal debris in the hydraulic oil is adsorbed on the first magnet 62 during the flow, thereby reducing the metal debris carried in the hydraulic oil and reducing the possibility of damage to the drive gear 4 and the center gear 3.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A turntable based on a belt pressure working machine, characterized in that: The invention comprises a turntable body (1), wherein a lubrication cavity (2) is provided in the turntable body (1), wherein the lubrication cavity (2) is used to inject hydraulic oil, wherein a central gear (3) and a driving gear (4) are arranged in the turntable body (1) and in the lubrication cavity (2), wherein the central gear (3) is used to sleeve a pipe column, wherein the driving gear (4) is located outside the central gear (3) and meshes with the central gear (3), wherein a hydraulic motor (5) is arranged on the turntable body (1) for driving the driving gear (4) to rotate, wherein a plurality of driving gears (4) are arranged and are evenly arranged along the circumference of the central gear (3); and wherein a filtering device (6) is arranged in the lubrication cavity (2), wherein the filtering device (6) is used to absorb impurities in the hydraulic oil.

2. A turntable based on a belt pressure working machine according to claim 1, characterized in that: The filtering device (6) comprises a rectangular frame (61) arranged in the lubrication cavity (2) and a first magnet (62) arranged in the rectangular frame (61); the first magnet (62) is cylindrical and rotatably arranged in the rectangular frame (61); the first magnet (62) is used to absorb metal debris in the hydraulic oil; the filtering device (6) also comprises a film (63) rolled up on the first magnet (62); the metal debris absorbed by the first magnet (62) adheres to the film (63); the filtering device (6) also comprises a winding member; the winding member is used to roll up the film (63) and wrap the metal debris in the film (63).

3. A turntable based on a belt pressure working machine according to claim 2, characterized in that: The winding member comprises a winding shaft (64) rotatably arranged in a rectangular frame (61), the winding shaft (64) being located between adjacent first magnets (62), the length direction and the rotation axis of the winding shaft (64) being parallel to the length direction of the first magnet (62), and a pulling member being arranged on the winding shaft (64), the pulling member acting on the end of the film (63) so that the film (63) is wound on the winding shaft (64).

4. A turntable based on a belt pressure working machine according to claim 3, characterized in that: The film (63) is provided with a tear notch (7), the length direction of the tear notch (7) is perpendicular to the length direction of the film (63), and the tear notch (7) is used to break the film (63) when the film (63) is rolled up by the winding shaft (64). The pulling member comprises a second magnet (65) arranged on the film (63), the second magnet (65) is in the shape of a long strip, and the second magnet (65) is located on one side of the tear notch (7). The winding shaft (64) is provided with an electromagnet (66), and the second magnet (65) is adsorbed on the first magnet (62). When the electromagnet (66) is energized, it adsorbs the second magnet (65) and is fixed on the winding shaft (64).

5. A turntable based on a belt pressure working machine according to claim 4, characterized in that: A first motor (8) is arranged on the rectangular frame (61) and the output shaft enters the rectangular frame (61); the winding shaft (64) is arranged on the output shaft of the first motor (8); the first motor (8) drives the winding shaft (64) to rotate to wind up the film (63); when the film (63) is wound up, the outer side of the film (63) is wound up on the winding shaft (64).

6. A turntable based on a belt pressure working machine according to claim 5, characterized in that: The turntable body (1) is provided with a notch (12), the notch (12) being in communication with the lubrication cavity (2), the notch (12) being located above the turntable body (1), and after the rectangular frame (61) is inserted into the lubrication cavity (2) through the notch (12), the upper end surface of the rectangular frame (61) is engaged in the notch (12) to close the notch (12); the bottom wall of the lubrication cavity (2) is provided with a positioning groove, and the bottom wall of the rectangular frame (61) is engaged in the positioning groove.

7. A turntable based on a belt pressure working machine according to claim 6, characterized in that: A receiving platform is protruded from the lower side of the inner wall of the notch (12); the peripheral wall of the upper end surface of the rectangular frame (61) is stepped and received on the receiving platform; a sealing ring is provided on the peripheral wall of the upper end surface of the rectangular frame (61); the sealing ring is clamped and deformed between the inner wall of the notch (12) and the upper end surface of the rectangular frame (61).

8. The turntable based on the belt pressure working machine according to claim 2, characterized in that: Liquid-conducting covers (13) are arranged on both sides of the rectangular frame (61); the outer wall of the liquid-conducting cover (13) is fixedly arranged on the inner wall of the lubrication cavity (2); the liquid-conducting cover (13) comprises a rectangular cover (131) and a rectangular tube (132) arranged on the rectangular cover (131); the rectangular tube (132) is connected to the rectangular cover (131); a plurality of the rectangular tubes (132) are arranged; the rectangular tubes (132) are located between adjacent first magnets (62); hydraulic oil enters the rectangular cover (131) and flows through the rectangular tubes (132) to between the first magnets (62), and then flows through between the first magnets (62) to the rectangular tube (132) on the other side.

9. The turntable based on the belt pressure working machine according to claim 3, characterized in that: A compacting roller (9) is arranged in the rectangular frame (61), and the compacting roller (9) is located on one side of the winding shaft (64). The length direction and the rotation axis of the compacting roller (9) are parallel to the length direction of the winding shaft (64). The compacting roller (9) is slidably arranged on the rectangular frame (61), and a driving member is arranged on the rectangular frame (61) for driving the compacting roller (9) to be pressed onto the winding shaft (64) so ​​that the film (63) is compacted on the winding shaft (64).

10. A turntable based on a belt pressure working machine according to claim 9, characterized in that: The peripheral wall of the compacting roller (9) is sleeved with an air bag, and the air bag is in an expanded state to compact the film (63) onto the winding shaft (64).

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