Large-torque hydraulic wrench for underwater operation

Abstract

The invention relates to an underwater operation tool, and discloses an underwater operation large-torque hydraulic wrench which comprises a large-torque hydraulic wrench top cover and a large-torque hydraulic wrench base, and the top end of the large-torque hydraulic wrench base is provided with the large-torque hydraulic wrench top cover. A pressure gauge, a pressure compensator, a first hydraulic driving assembly and a second hydraulic driving assembly are fixedly installed at the top end of the large-torque hydraulic wrench top cover. According to the large-torque hydraulic wrench for underwater operation, a user can conveniently hold the wrench through the connecting rod and the grip, illumination can be provided for underwater construction through the arrangement of the submersible lamp, smooth construction is assisted, torque change can be achieved through the wrench assembly on the lower portion of the rotating shaft, the wrench can be used in different environments, and the sleeve head is convenient to replace; the top cover and the base of the large-torque hydraulic wrench are locked through the upper inserting column and the lower inserting column by the locking bolt, the inserting ring and the adaptive groove are matched with the sealing strip and the sealing groove, positioning and sealing are achieved, operation is easy and convenient, and maintenance is convenient.

Description

Technical Field

[0001] The invention relates to an underwater working tool, in particular to an underwater working high-torque hydraulic wrench. Background Art

[0002] The underwater operation high torque hydraulic wrench is a professional tool specially used in underwater environment. It uses hydraulic power source to provide high torque output to achieve bolt installation and removal. In the construction and maintenance of offshore oil platforms, wind power platforms, etc., it is used to tighten and remove a large number of high-strength bolts, such as connecting bolts of platform structures, equipment installation bolts, etc.

[0003] The existing large-torque hydraulic wrenches for underwater operations have only one torque form. When operating underwater, the torque can only be changed by replacing the equipment, which is difficult to operate. In addition, the existing large-torque hydraulic wrenches for underwater operations are not equipped with diving lights, so lighting cannot be achieved during underwater operations, which has great limitations. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a large-torque hydraulic wrench for underwater operations, aiming to solve the problem that the existing large-torque hydraulic wrench for underwater operations is inconvenient to operate.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A large torque hydraulic wrench for underwater operation comprises a large torque hydraulic wrench top cover and a large torque hydraulic wrench base, wherein a large torque hydraulic wrench top cover is arranged at the top end of the large torque hydraulic wrench base, a pressure gauge, a pressure compensator, a first hydraulic drive assembly and a second hydraulic drive assembly are fixedly installed at the top end of the large torque hydraulic wrench top cover, a plug-in ring is fixedly installed at the lower part of the large torque hydraulic wrench top cover, a sealing strip is fixedly installed at the lower part of the plug-in ring, an adaption groove and a sealing groove are provided on the inner diameter surface of the large torque hydraulic wrench base, a main rotating shaft, a connecting shaft, a first slave rotating shaft and a second slave rotating shaft are rotatably installed inside the large torque hydraulic wrench base, a main gear is fixedly installed on the outer side of the main rotating shaft, a first connecting gear and a second connecting gear are sequentially installed on the outer side of the connecting shaft from bottom to top, a slave gear is fixedly installed on the outer side of the first slave rotating shaft, a controller is fixedly installed at the top end of the large torque hydraulic wrench top cover, and a wrench assembly is fixedly installed at the lower ends of the first slave rotating shaft and the second slave rotating shaft.

[0007] Preferably, a fixing seat is provided at the top of the high torque hydraulic wrench top cover, a connecting rod is fixedly installed at the top of the high torque hydraulic wrench top cover through the fixing seat, and grips are provided at both ends of the connecting rod. Through the above technical solution, the user stands on the underwater platform, and the design of the connecting rod and the grip facilitates the user to hold the underwater high torque hydraulic wrench.

[0008] Preferably, the first hydraulic drive assembly and the second hydraulic drive assembly have the same structure, the first hydraulic drive assembly includes a drive member housing, a hydraulic cylinder housing is arranged on the side of the drive member housing, a hydraulic pipe connection port is arranged on the outer side of the hydraulic cylinder housing, a piston is arranged inside the hydraulic cylinder housing, a connecting column is arranged at the end of the piston away from the hydraulic cylinder housing, a connecting head is fixedly installed at the end of the connecting column away from the piston, an internal wrench is rotatably installed inside the drive member housing, a rotating rod is arranged between the internal wrench and the connecting head, a through groove designed to penetrate is opened at the top of the internal wrench, a ratchet column is rotatably installed inside the internal wrench, a pawl is arranged on the inner side of the through groove, an alignment block is inserted and installed on the ratchet column, two identical alignment blocks are arranged, and the two alignment blocks are respectively fixedly connected to the first slave rotating shaft and the second slave rotating shaft.

[0009] Through the above technical solution, when in use, the piston moves forward and backward to drive the connecting column and the connecting head to move forward and backward, and the connecting head drives the inner wrench to rotate around the ratchet column. When the inner wrench moves forward, it drives the pawl to rotate around the ratchet column, and the pawl also rotates with the ratchet column. When the inner wrench rotates backward, the force of the pawl on the ratchet column disappears. At this time, the inner wrench returns to its initial position, and the above process is repeated to realize the ratchet column driving the alignment block, thereby realizing the rotation of the first slave rotation shaft and the second slave rotation shaft.

[0010] Preferably, a lamp holder is fixedly installed at the lower part of the high torque hydraulic wrench base, a damping shaft is rotatably installed inside the lamp holder, a bracket is fixedly installed at the lower part of the damping shaft, and a diving light is fixedly installed at the lower part of the damping shaft through the bracket. Through the above technical solution, through the design of the lamp holder, the damping shaft, the bracket and the diving light, the diving light can provide lighting for underwater construction, facilitating underwater construction.

[0011] Preferably, an upper plug-in column is provided on one side of the high-torque hydraulic wrench top cover close to the high-torque hydraulic wrench base, a lower plug-in column is fixedly installed on the bottom of the high-torque hydraulic wrench base, and a locking bolt is provided between the upper plug-in column and the lower plug-in column.

[0012] Preferably, the upper plug-in column and the lower plug-in column are plug-in mounted, the number of the upper plug-in column and the lower plug-in column is the same, and the locking bolt passes through the high-torque hydraulic wrench top cover and extends to the interior of the lower plug-in column. Through the above technical solution, in the process of assembling the high-torque hydraulic wrench top cover and the high-torque hydraulic wrench base, the upper plug-in column is inserted into the interior of the lower plug-in column until the upper plug-in column completely enters the interior of the lower plug-in column, and then the locking bolt is used to lock it, and the installation of the high-torque hydraulic wrench top cover and the high-torque hydraulic wrench base can be completed. Through the cooperation of the plug-in ring, the sealing strip, the adapter groove and the sealing groove, the plug-in ring is inserted into the interior of the adapter groove, the sealing strip is inserted into the interior of the sealing groove, the plug-in ring and the adapter groove are positioned and installed, and the sealing strip and the sealing groove are sealed.

[0013] Preferably, the main gear is meshed with the second connecting gear, the first connecting gear is meshed with the slave gear, the ratio of the number of teeth of the second connecting gear to the number of teeth of the main gear is 2:1, the ratio of the number of teeth of the first connecting gear to the number of teeth of the main gear is 1:6, the number of teeth of the slave gear is the same as the number of teeth of the second connecting gear, and the speed ratio of the main rotating shaft to the first slave rotating shaft is 1:12. Through the above technical solution, in the process of using the device, using the wrench assembly at the bottom of the first slave rotating shaft or the wrench assembly at the bottom of the second slave rotating shaft, the torque can be changed to meet the use in different environments.

[0014] Preferably, the wrench assembly includes a transmission seat, a plug-in hole, a secondary plug-in column, a socket head, a pin hole and a nail pin, the lower ends of the first slave rotating shaft and the second slave rotating shaft are fixedly installed with a transmission seat, the bottom end of the transmission seat is provided with a plug-in hole, the inside of the plug-in hole is plug-installed with a secondary plug-in column, the lower part of the secondary plug-in column is fixedly installed with a socket head, the outer sides of the transmission seat and the secondary plug-in column are provided with pin holes, and the inner sides of the pin holes are plug-installed with nail pins.

[0015] Preferably, the cross-sections of the plug hole and the secondary plug-in column are both "hexagonal" structures, the center lines of the secondary plug-in column and the transmission seat are located on the same vertical line, and the pin passes through the transmission seat and extends to the interior of the secondary plug-in column.

[0016] Through the above technical solution, during the installation of the socket head, the secondary plug-in column at the lower part of the socket head is aligned with the plug-in hole and inserted until the secondary plug-in column completely enters the interior of the plug-in hole, and then the pin is inserted into the interior of the pin hole until the secondary plug-in column and the transmission seat are completely locked, and the installation of the socket head is completed.

[0017] Preferably, the connecting column, the connecting head, the inner wrench, the rotating rod, the pawl and the ratchet column are all located inside the driving member housing, and the inner wrench is rotatably connected to the connecting head via the rotating rod. According to the above technical solution, the positioning block is driven to rotate by the ratchet column, and the positioning block can drive the first slave rotating shaft and the second slave rotating shaft to rotate, thereby realizing the screwing of the bolt.

[0018] The large-torque hydraulic wrench for underwater operations provided by the present invention is convenient for users to hold the large-torque hydraulic wrench for underwater operations through the design of the connecting rod and the handle. The design of the lamp holder, the damping shaft, the bracket and the diving light can provide lighting for underwater construction, making underwater construction convenient. By using the first wrench assembly at the bottom of the rotating shaft or the second wrench assembly at the bottom of the rotating shaft, torque changes can be achieved to meet the use in different environments.

[0019] The underwater operation high torque hydraulic wrench provided by the present invention is to align the auxiliary plug-in column at the lower part of the sleeve head with the plug-in hole and insert it until the auxiliary plug-in column is completely inserted into the interior of the plug-in hole, and then insert the pin into the interior of the pin hole until the auxiliary plug-in column and the transmission seat are completely locked, so that the installation of the sleeve head can be completed, which is convenient for replacing the sleeve head;

[0020] The underwater operation high-torque hydraulic wrench provided by the present invention is to insert the upper plug-in column into the interior of the lower plug-in column until the upper plug-in column completely enters the interior of the lower plug-in column, and then use the locking bolt to lock it, so as to complete the installation of the high-torque hydraulic wrench top cover and the high-torque hydraulic wrench base. Through the cooperation of the plug-in ring, the sealing strip, the adapter groove and the sealing groove, the plug-in ring is inserted into the adapter groove, the sealing strip is inserted into the sealing groove, the plug-in ring and the adapter groove are positioned and installed, the sealing strip and the sealing groove are sealed, and the operation is simple and maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the underwater operation high torque hydraulic wrench of the present invention from the first perspective;

[0022] Figure 2 The second perspective stereoscopic structure of the underwater high torque hydraulic wrench of the present invention is shown Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the disassembled structure of the underwater operation high torque hydraulic wrench in the present invention;

[0024] Figure 4 This is a schematic diagram of the split structure of the wrench assembly in the present invention;

[0025] Figure 5 It is a schematic diagram from the first viewing angle of the gear installation structure in the present invention;

[0026] Figure 6 It is a schematic diagram from a second viewing angle of the gear mounting structure in the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the first hydraulic drive assembly in the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the first hydraulic drive assembly in the present invention;

[0029] Fig. 9 It is a schematic diagram of the pawl installation structure in the present invention.

[0030] Among them: 1. Top cover of large torque hydraulic wrench; 2. Base of large torque hydraulic wrench; 3. Fixed seat; 4. Connecting rod; 5. Handle; 6. Pressure gauge; 7. Pressure compensator; 8. Lamp holder; 9. Damping shaft; 10. Bracket; 11. Diving light; 12. Upper plug-in column; 13. Lower plug-in column; 14. Locking bolt; 15. First hydraulic drive assembly; 1501. Drive part housing; 1502. Hydraulic cylinder housing; 1503. Hydraulic pipe connection port; 1504. Piston; 1505. Connecting column; 1506. Connector; 1507. Internal wrench; 1508. Rotating rod; 1509. Through slot ; 1510, pawl; 1511, ratchet column; 1512, alignment block; 16, second hydraulic drive assembly; 17, main rotating shaft; 18, main gear; 19, connecting shaft; 20, first connecting gear; 21, second connecting gear; 22, first slave rotating shaft; 23, slave gear; 24, controller; 25, second slave rotating shaft; 26, wrench assembly; 2601, transmission seat; 2602, plug-in hole; 2603, secondary plug-in column; 2604, socket head; 2605, pin hole; 2606, nail pin; 27, plug-in ring; 28, sealing strip; 29, adapter groove; 30, sealing groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] like Figure 1-6 As shown, a specific example structure of the underwater operation high torque hydraulic wrench in this example is given.

[0034] Based on the diagram, the underwater high-torque hydraulic wrench in this example specifically includes a high-torque hydraulic wrench top cover 1 and a high-torque hydraulic wrench base 2. The high-torque hydraulic wrench top cover 1 is provided at the top of the high-torque hydraulic wrench base 2. A pressure gauge 6, a pressure compensator 7, a first hydraulic drive component 15 and a second hydraulic drive component 16 are fixedly installed on the top of the high-torque hydraulic wrench top cover 1. A plug-in ring 27 is fixedly installed at the bottom of the plug-in ring 27. A sealing strip 28 is fixedly installed at the bottom of the plug-in ring 27. An adapter groove 2 is provided on the inner diameter surface of the high-torque hydraulic wrench base 2. 9 and sealing groove 30, the main rotating shaft 17, the connecting shaft 19, the first slave rotating shaft 22 and the second slave rotating shaft 25 are rotatably installed inside the high-torque hydraulic wrench base 2, the main gear 18 is fixedly installed on the outer side of the main rotating shaft 17, the first connecting gear 20 and the second connecting gear 21 are installed on the outer side of the connecting shaft 19 from bottom to top, the slave gear 23 is fixedly installed on the outer side of the first slave rotating shaft 22, the controller 24 is fixedly installed on the top end of the high-torque hydraulic wrench top cover 1, and the wrench assembly 26 is fixedly installed on the lower ends of the first slave rotating shaft 22 and the second slave rotating shaft 25.

[0035] As a further explanation, in this example, a fixing seat 3 is provided at the top of the high torque hydraulic wrench top cover 1, a connecting rod 4 is fixedly mounted on the top of the high torque hydraulic wrench top cover 1 through the fixing seat 3, and grips 5 are provided at both ends of the connecting rod 4. In this way, when a user stands on the underwater platform, the design of the connecting rod 4 and the grip 5 facilitates the user to hold the underwater high torque hydraulic wrench.

[0036] As a further explanation, in this example, a lamp holder 8 is fixedly installed at the lower part of the high torque hydraulic wrench base 2, a damping shaft 9 is rotatably installed inside the lamp holder 8, a bracket 10 is fixedly installed at the lower part of the damping shaft 9, and a diving light 11 is fixedly installed at the lower part of the damping shaft 9 through the bracket 10. In this way, through the design of the lamp holder 8, the damping shaft 9, the bracket 10 and the diving light 11, the diving light 11 can provide lighting for underwater construction and facilitate underwater construction.

[0037] As further explanation, in this example, an upper plug-in column 12 is provided on one side of the high-torque hydraulic wrench top cover 1 close to the high-torque hydraulic wrench base 2, a lower plug-in column 13 is fixedly installed at the bottom of the high-torque hydraulic wrench base 2, and a locking bolt 14 is provided between the upper plug-in column 12 and the lower plug-in column 13.

[0038] Embodiment 2:

[0039] Based on the solution of embodiment 1, this example further provides optimization and specific solutions for the component structure thereof.

[0040] like Figure 3As shown, in this example, the matching structure between the upper plug-in column 12 and the lower plug-in column 13 is set to be plug-in installed, the number of the upper plug-in column 12 and the lower plug-in column 13 are the same, and the locking bolt 14 passes through the top cover 1 of the high-torque hydraulic wrench and extends to the interior of the lower plug-in column 13.

[0041] In this way, during the process of assembling the high-torque hydraulic wrench top cover 1 and the high-torque hydraulic wrench base 2, the upper plug-in column 12 is inserted into the interior of the lower plug-in column 13 until the upper plug-in column 12 completely enters the interior of the lower plug-in column 13, and then the locking bolt 14 is used to lock it, and the installation of the high-torque hydraulic wrench top cover 1 and the high-torque hydraulic wrench base 2 can be completed. Through the cooperation of the plug-in ring 27, the sealing strip 28, the adapter groove 29 and the sealing groove 30, the plug-in ring 27 is inserted into the adapter groove 29, and the sealing strip 28 is inserted into the sealing groove 30. The plug-in ring 27 and the adapter groove 29 are positioned and installed, and the sealing strip 28 and the sealing groove 30 are sealed.

[0042] See also Figures 4 to 6 In this example, the main gear 18 is meshed with the second connecting gear 21, the first connecting gear 20 is meshed with the slave gear 23, the ratio of the number of teeth of the second connecting gear 21 to the number of teeth of the main gear 18 is 2:1, the ratio of the number of teeth of the first connecting gear 20 to the number of teeth of the main gear 18 is 1:6, the number of teeth of the slave gear 23 is the same as the number of teeth of the second connecting gear 21, and the speed ratio of the main rotating shaft 17 to the first slave rotating shaft 22 is 1:12.

[0043] In this way, when using the device, the torque can be changed by using the first wrench assembly 26 at the lower portion of the rotating shaft 22 or the second wrench assembly 26 at the lower portion of the rotating shaft 25 to meet the use in different environments.

[0044] Embodiment three:

[0045] Based on the solutions of Example 1 and Example 2, this example further provides optimization and specific solutions for the components and structures therein.

[0046] See Figures 5 to 9 In this example, the first hydraulic drive assembly 15 and the second hydraulic drive assembly 16 adopt the same structure.

[0047] The first hydraulic drive assembly 15 includes a drive housing 1501, a hydraulic cylinder housing 1502 is arranged on the side of the drive housing 1501, a hydraulic pipe connection port 1503 is arranged on the outer side of the hydraulic cylinder housing 1502, a piston 1504 is arranged inside the hydraulic cylinder housing 1502, a connecting column 1505 is arranged at one end of the piston 1504 away from the hydraulic cylinder housing 1502, a connector 1506 is fixedly installed at one end of the connecting column 1505 away from the piston 1504, and the internal rotation of the drive housing 1501 is realized. An internal wrench 1507 is installed, and a rotating rod 1508 is arranged between the internal wrench 1507 and the connecting head 1506. A through slot 1509 with a penetrating design is opened at the top of the internal wrench 1507. A ratchet column 1511 is installed for internal rotation of the internal wrench 1507. A pawl 1510 is arranged on the inner side of the through slot 1509. An alignment block 1512 is installed on the ratchet column 1511. Two identical alignment blocks 1512 are arranged, and the two alignment blocks 1512 are fixedly connected to the first slave rotating shaft 22 and the second slave rotating shaft 25 respectively.

[0048] When the first hydraulic drive assembly constructed in this way is in use, the piston 1504 moves forward and backward to drive the connecting column 1505 and the connecting head 1506 to move forward and backward. The connecting head 1506 drives the inner wrench 1507 to rotate around the ratchet column 1511. When the inner wrench 1507 moves forward, it drives the pawl 1510 to rotate around the ratchet column 1511. At the same time, the pawl 1510 also rotates with the ratchet column 1511. When the inner wrench 1507 rotates backward, the force of the pawl 1510 on the ratchet column 1511 disappears. At this time, the inner wrench 1507 returns to its initial position. Repeating the above process can realize that the ratchet column 1511 drives the alignment block 1512, thereby realizing the rotation of the first slave rotating shaft 22 and the second slave rotating shaft 25.

[0049] As a further explanation, in this example, the connecting column 1505 , the connecting head 1506 , the inner wrench 1507 , the rotating rod 1508 , the pawl 1510 and the ratchet column 1511 are all located inside the driving member housing 1501 , and the inner wrench 1507 is rotatably connected to the connecting head 1506 via the rotating rod 1508 .

[0050] With such arrangement, the alignment block 1512 is driven to rotate by the ratchet column 1511 , and the alignment block 1512 can drive the first slave rotating shaft 22 and the second slave rotating shaft 25 to rotate, thereby realizing the tightening of the bolt.

[0051] Embodiment 4:

[0052] Based on the solutions of Embodiments 1 to 3, this example further provides optimization and specific solutions for the components and structures therein.

[0053] See Figure 4In this example, a specific configuration scheme is provided for the wrench assembly 26 .

[0054] The wrench assembly 26 specifically includes a transmission seat 2601 , a plug hole 2602 , a secondary plug column 2603 , a socket head 2604 , a pin hole 2605 and a pin 2606 .

[0055] Among them, the lower ends of the first slave rotating shaft 22 and the second slave rotating shaft 25 are fixedly installed with a transmission seat 2601, the bottom end of the transmission seat 2601 is provided with a plug-in hole 2602, the inside of the plug-in hole 2602 is plugged with a secondary plug-in column 2603, the lower part of the secondary plug-in column 2603 is fixedly installed with a socket head 2604, the outer sides of the transmission seat 2601 and the secondary plug-in column 2603 are provided with pin holes 2605, and the inner side of the pin hole 2605 is plugged with a nail pin 2606.

[0056] Furthermore, the cross-sections of the plug hole 2602 and the secondary plug-in column 2603 are both "hexagonal" structures, the center lines of the secondary plug-in column 2603 and the transmission seat 2601 are located on the same vertical line, and the pin 2606 penetrates the transmission seat 2601 and extends to the interior of the secondary plug-in column 2603.

[0057] With the wrench assembly 26 thus configured, during the process of installing the socket head 2604, the secondary plug-in column 2603 at the lower part of the socket head 2604 is aligned with the plug-in hole 2602 and inserted until the secondary plug-in column 2603 completely enters the interior of the plug-in hole 2602, and then the pin 2606 is inserted into the interior of the pin hole 2605 until the secondary plug-in column 2603 is completely locked with the transmission seat 2601, thereby completing the installation of the socket head 2604, which is simple to operate.

[0058] The following further illustrates the use of the underwater operation high torque hydraulic wrench formed based on the above-mentioned example solution.

[0059] Combination Figures 1 to 9 As shown, when the underwater operation high torque hydraulic wrench is in use, the user stands on the underwater platform. The design of the connecting rod 4 and the handle 5 makes it convenient for the user to hold the underwater operation high torque hydraulic wrench; through the design of the lamp holder 8, the damping shaft 9, the bracket 10 and the diving light 11, the diving light 11 can provide lighting for underwater construction.

[0060] During operation, the output shaft of the first hydraulic drive assembly 15 drives the main rotating shaft 17 to rotate, and the main rotating shaft 17 drives the wrench assembly 26 to rotate through the main gear 18, the connecting shaft 19, the first connecting gear 20, the second connecting gear 21, the first slave rotating shaft 22 and the slave gear 23. The output shaft of the second hydraulic drive assembly 16 drives the second slave rotating shaft 25 to rotate, and the second slave rotating shaft 25 drives the lower wrench assembly 26 to rotate. Through the design of the second hydraulic drive assembly 16 and the first hydraulic drive assembly 15, the piston 1504 moves back and forth to drive the connecting column 1505 and the connecting head 1506 to move back and forth, and the connecting head 1506 drives the inner wrench 1507 to rotate around the ratchet column 1511 rotates, and the inner wrench 1507 moves forward, driving the pawl 1510 to rotate around the ratchet column 1511, and at the same time, the pawl 1510 also rotates with the ratchet column 1511. When the inner wrench 1507 rotates backward, the force of the pawl 1510 on the ratchet column 1511 disappears. At this time, the inner wrench 1507 returns to its initial position, and the above process is repeated to realize the ratchet column 1511 driving the alignment block 1512, thereby realizing the rotation of the first slave rotating shaft 22 and the second slave rotating shaft 25. The wrench assembly 26 at the bottom of the first slave rotating shaft 22 or the wrench assembly 26 at the bottom of the second slave rotating shaft 25 can realize torque changes to meet the use in different environments.

[0061] On this basis, align the secondary plug-in column 2603 at the bottom of the sleeve head 2604 with the plug-in hole 2602 and insert it until the secondary plug-in column 2603 completely enters the interior of the plug-in hole 2602, and then insert the pin 2606 into the pin hole 2605 until the secondary plug-in column 2603 and the transmission seat 2601 are completely locked, and the installation of the sleeve head 2604 is completed.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-torque hydraulic wrench for underwater operation, comprising a high-torque hydraulic wrench top cover (1) and a high-torque hydraulic wrench base (2), characterized in that: The top of the high-torque hydraulic wrench base (2) is provided with a high-torque hydraulic wrench top cover (1), the top of which is fixedly mounted a pressure gauge (6), a pressure compensator (7), a first hydraulic drive assembly (15) and a second hydraulic drive assembly (16), the lower part of the high-torque hydraulic wrench top cover (1) is fixedly mounted with a plug-in ring (27), the lower part of the plug-in ring (27) is fixedly mounted with a sealing strip (28), the inner diameter surface of the high-torque hydraulic wrench base (2) is provided with an adapting groove (29) and a sealing groove (30), the internal rotating device of the high-torque hydraulic wrench base (2) is fixedly mounted with a plug-in ring (27), and the lower part of the plug-in ring (27) is fixedly mounted with a sealing strip (28), the inner diameter surface of the high-torque hydraulic wrench base (2) is provided with an adapting groove (29) and a sealing groove (30), and the internal rotating device of the high-torque hydraulic wrench base (2) is fixedly mounted with a plug-in ring (27). A main rotating shaft (17), a connecting shaft (19), a first slave rotating shaft (22) and a second slave rotating shaft (25) are installed. A main gear (18) is fixedly installed on the outer side of the main rotating shaft (17). A first connecting gear (20) and a second connecting gear (21) are installed on the outer side of the connecting shaft (19) in sequence from bottom to top. A slave gear (23) is fixedly installed on the outer side of the first slave rotating shaft (22). A controller (24) is fixedly installed on the top end of the internal part of the high-torque hydraulic wrench top cover (1). A wrench assembly (26) is fixedly installed on the lower ends of the first slave rotating shaft (22) and the second slave rotating shaft (25).

2. The underwater operation high torque hydraulic wrench according to claim 1, characterized in that: A fixing seat (3) is arranged at the top end of the high-torque hydraulic wrench top cover (1), a connecting rod (4) is fixedly mounted on the top end of the high-torque hydraulic wrench top cover (1) via the fixing seat (3), and handles (5) are arranged at both ends of the connecting rod (4).

3. The underwater operation high torque hydraulic wrench according to claim 1, characterized in that: The first hydraulic drive assembly (15) and the second hydraulic drive assembly (16) have the same structure. The first hydraulic drive assembly (15) comprises a drive member housing (1501). A hydraulic cylinder housing (1502) is arranged on the side of the drive member housing (1501). A hydraulic pipe connection port (1503) is arranged on the outer side of the hydraulic cylinder housing (1502). A piston (1504) is arranged inside the hydraulic cylinder housing (1502). A connecting column (1505) is arranged at one end of the piston (1504) away from the hydraulic cylinder housing (1502). A connecting head (1506) is fixedly installed at one end of the connecting column (1505) away from the piston (1504). An internal wrench (1507) is rotatably installed inside the housing (1501), a rotating rod (1508) is arranged between the internal wrench (1507) and the connecting head (1506), a through slot (1509) designed to penetrate is provided at the top of the internal wrench (1507), a ratchet column (1511) is rotatably installed inside the internal wrench (1507), a pawl (1510) is arranged on the inner side of the through slot (1509), an alignment block (1512) is inserted and installed on the ratchet column (1511), two identical alignment blocks (1512) are arranged, and the two alignment blocks (1512) are respectively fixedly connected to the first slave rotating shaft (22) and the second slave rotating shaft (25).

4. The underwater operation high torque hydraulic wrench according to claim 1, characterized in that: A lamp holder (8) is fixedly mounted on the lower part of the high-torque hydraulic wrench base (2); a damping shaft (9) is rotatably mounted on the inner side of the lamp holder (8); a bracket (10) is fixedly mounted on the lower part of the damping shaft (9); and a diving lamp (11) is fixedly mounted on the lower part of the damping shaft (9) via the bracket (10).

5. The underwater operation high torque hydraulic wrench according to claim 1, characterized in that: An upper plug-in column (12) is arranged on a side of the high-torque hydraulic wrench top cover (1) close to the high-torque hydraulic wrench base (2), a lower plug-in column (13) is fixedly installed at the bottom of the high-torque hydraulic wrench base (2), and a locking bolt (14) is arranged between the upper plug-in column (12) and the lower plug-in column (13).

6. The underwater operation high torque hydraulic wrench according to claim 5, characterized in that: The upper plug-in column (12) and the lower plug-in column (13) are plug-connected and installed, the number of the upper plug-in column (12) and the number of the lower plug-in column (13) are the same, and the locking bolt (14) passes through the top cover (1) of the high-torque hydraulic wrench and extends to the interior of the lower plug-in column (13).

7. The underwater operation high torque hydraulic wrench according to claim 1, characterized in that: The main gear (18) is meshedly connected to the second connecting gear (21), the first connecting gear (20) is meshedly connected to the slave gear (23), the ratio of the number of teeth of the second connecting gear (21) to the number of teeth of the main gear (18) is 2:1, the ratio of the number of teeth of the first connecting gear (20) to the number of teeth of the main gear (18) is 1:6, the number of teeth of the slave gear (23) is the same as the number of teeth of the second connecting gear (21), and the speed ratio of the main rotating shaft (17) to the first slave rotating shaft (22) is 1:

12.

8. The underwater operation high torque hydraulic wrench according to claim 1, characterized in that: The wrench assembly (26) comprises a transmission seat (2601), a plug hole (2602), a secondary plug column (2603), a sleeve head (2604), a pin hole (2605) and a nail pin (2606); the lower ends of the first slave rotating shaft (22) and the second slave rotating shaft (25) are fixedly mounted with a transmission seat (2601); a plug hole (2602) is provided at the bottom end of the transmission seat (2601); a secondary plug column (2603) is plugged and installed inside the plug hole (2602); a sleeve head (2604) is fixedly mounted at the lower part of the secondary plug column (2603); pin holes (2605) are provided on the outer sides of the transmission seat (2601) and the secondary plug column (2603); and a nail pin (2606) is plugged and installed inside the pin hole (2605).

9. The underwater operation high torque hydraulic wrench according to claim 8, characterized in that: The cross-sections of the plug hole (2602) and the secondary plug post (2603) are both "hexagonal" structures. The center lines of the secondary plug post (2603) and the transmission seat (2601) are located on the same vertical line. The pin (2606) passes through the transmission seat (2601) and extends to the inside of the secondary plug post (2603).

10. The underwater operation high torque hydraulic wrench according to claim 3, characterized in that: The connecting column (1505), the connecting head (1506), the inner wrench (1507), the rotating rod (1508), the pawl (1510) and the ratchet column (1511) are all located inside the driving member housing (1501), and the inner wrench (1507) is rotatably connected to the connecting head (1506) via the rotating rod (1508).

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