A water hydraulic sealing and locking device

Abstract

A water hydraulic sealing and locking device includes a first, a second, a third, and a fourth base body, a plurality of locking cranks, a pin shaft, a tensioning hydraulic cylinder, an unlocking hydraulic cylinder, and a seal; a plurality of first through holes are provided on the first base body, a pin shaft is arranged therein, and the locking cranks are hinged on the pin shaft. A plurality of second through holes are provided on the second base body, and a plurality of third through holes are provided on the third base body; a first through groove is provided on the top surface of the first base body, and a tensioning hydraulic cylinder is arranged in the first through groove. The telescopic end of the unlocking hydraulic cylinder penetrates through the second base body and is connected to the third base body, and drives the third base body to perform reciprocating telescopic motion; in the application of this design, by contracting the tensioning hydraulic cylinder and rotating the fixing handle to form an obstacle, and then by extending the unlocking hydraulic cylinder, the third and fourth base bodies are brought closer and abutted against the fixing handle, thereby forming a sealing effect. Therefore, this design not only has a high construction efficiency but also has a low pre-tightening difficulty.

Description

Technical Field

[0001] The present invention relates to a locking device, belonging to the field of locking equipment, and particularly to a water hydraulic sealing and locking device. Background Art

[0002] In engineering construction, if two planes need to be sealed, it is generally achieved by means of bolt locking. The two planes are clamped through the pre-tightening of bolts, and then a plane seal is achieved by cooperating with a plane seal. However, for locking and sealing by means of bolt locking, operations such as passing bolts, locking bolts, and applying pre-tightening torque are required to complete the pre-tightening of one bolt. As the area and pressure of the sealing plane increase, the number of bolts will increase accordingly. In the actual construction process, with the compression of the seal due to the force on the seal, the pre-tightening torques will also affect each other, and torque adjustment needs to be carried out one by one, increasing the difficulty of pre-tightening. At the same time, due to the large number of bolts, all bolts need to be removed to separate the sealing surface, resulting in low construction efficiency. Moreover, in some special environments, such as underwater or at high altitude, using bolt locking has high construction risks, high requirements for personnel protection, and the construction scope is limited by the mobility of people.

[0003] A patent application with the application number 201821600351.6 and the application date of September 29, 2018 discloses a double-end face dynamic seal device, which includes a first dynamic ring, a second dynamic ring, and a transmission sleeve. The first dynamic ring and the second dynamic ring are respectively arranged at both ends of the transmission sleeve in opposite directions, and a connecting piece is detachably arranged on the outer side wall of the transmission sleeve; one end of the connecting piece is slidably connected to the first dynamic ring, and the other end is slidably connected to the second dynamic ring; a plurality of spring holes are arranged along the circumferential direction at both ends of the transmission sleeve, and springs are arranged in the spring holes. One end of each spring abuts against the bottom of the spring hole, and the other end abuts against the end of the first dynamic ring or the end of the second dynamic ring. Although this technical solution can achieve sealing, its structure is not suitable for the sealing of plane bodies, and it also does not solve the defects of low construction efficiency and large pre-tightening difficulty existing in the prior art.

[0004] Disclosing the information of this background art section is only intended to increase the understanding of the overall background of the present application, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] The object of the present invention is to overcome the defects and problems of low construction efficiency and large pre-tightening difficulty existing in the prior art, and to provide a water hydraulic sealing and locking device with high construction efficiency and low pre-tightening difficulty.

[0006] To achieve the above object, the technical solution of the present invention is: a water hydraulic sealing and locking device, which includes a first base body, a second base body, a third base body, a fourth base body, a plurality of locking cranks, a pin shaft, a tensioning hydraulic cylinder and an unlocking hydraulic cylinder;

[0007] The first base body and the second base body are arranged vertically, and the second base body, the third base body and the fourth base body are arranged side by side in sequence;

[0008] One end of the top surface of the first base body is provided with a first through groove, and a plurality of second through grooves are arranged at intervals on the side surface of the fourth base body; a plurality of first through holes are arranged at intervals on the side surface of the first base body, and a pin shaft is arranged in each of the first through holes, and a locking crank is hinged to each of the pin shafts. A plurality of second through holes are arranged at intervals on the side surface of the second base body, and a plurality of third through holes are arranged at intervals on the side surface of the third base body;

[0009] A tensioning hydraulic cylinder is arranged in the first through groove, one end of the telescopic rod of the tensioning hydraulic cylinder is hinged to one end of the first through groove through a pin shaft, and one end of the fixed rod of the tensioning hydraulic cylinder penetrates through the other end of the first through groove and is hinged to the top surface of the second base body;

[0010] Each of the plurality of locking cranks includes a fixed side plate, a fixed shaft and a fixed handle. One end of the fixed side plate is hinged to the pin shaft, and the other end of the fixed side plate is fixedly connected to one end of the fixed shaft; the other end of the fixed shaft penetrates through the second through hole, the third through hole and the middle part of the fixed handle and is fixedly connected. The axis of the fixed side plate and the fixed handle is arranged at an angle to form an angle A; one of the fixed side plates of the locking crank is hinged to the telescopic rod of the tensioning hydraulic cylinder;

[0011] The unlocking hydraulic cylinder is fixed on one side of the second base body. The piston rod of the unlocking hydraulic cylinder penetrates through the second base body and is connected to the third base body, and drives the third base body to perform reciprocating telescopic motion.

[0012] The length of the fixed handle is less than the second through groove and greater than the height of the second through groove. The fixed handle penetrates through the second through groove and rotates along the axis of the fixed shaft.

[0013] On the other side of the second base body, a first circular groove is arranged between two adjacent second through holes, and a first groove through hole is opened at the center of the first circular groove; on the other side of the third base body, a second circular groove is arranged between two adjacent third through holes, and a second groove through hole is opened at the center of the second circular groove; an annular fixing member is arranged in the first circular groove, and a piston rod locking cover is arranged in the second circular groove.

[0014] The piston rod locking cover includes an upper cover disc body and a lower cover cylinder body. A plurality of bolt holes are provided on the upper cover disc body, and bolts are arranged in the bolt holes. The upper cover disc body is fixed in the second circular groove by bolts, and the lower cover cylinder body extends into the second groove through hole.

[0015] An unlocking hydraulic cylinder is arranged between every two adjacent locking cranks. The unlocking hydraulic cylinder includes a fixed cylinder, a fixing plate, a guide rod and a piston rod. One end of the fixed cylinder is fixedly connected to the top surface of the fixing plate, one end of the guide rod is fixedly connected to the bottom surface of the fixing plate, and the piston rod is movably arranged in the guide rod and performs reciprocating telescopic motion.

[0016] The bottom surface of the fixing plate is fixedly connected to one side of the second base body. The guide rod penetrates through the first groove through hole and extends into the annular fixing piece, and the piston rod extends into the second groove through hole and is fixedly connected to the lower cover cylinder body.

[0017] A sealing member is arranged between the third base body and the fourth base body. The sealing member is provided with a plurality of third through grooves corresponding to the plurality of second through grooves.

[0018] The sealing member is a strip-shaped rubber member.

[0019] The first base body, the second base body, the third base body and the fourth base body are square strip-shaped base bodies with equal lengths.

[0020] The included angle A is 30° - 60°.

[0021] A third through groove is provided on the top surface of the other end of the first base body. A second tensioning hydraulic cylinder is arranged in the third through groove. The second tensioning hydraulic cylinder is symmetrically arranged with the tensioning hydraulic cylinder. The second telescopic rod of the second tensioning hydraulic cylinder is hinged to the fixed side plate of one of the locking cranks.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In a water hydraulic sealing and locking device of the present invention, it includes first, second, third, and fourth bases, multiple locking cranks, pin shafts, a tensioning hydraulic cylinder, an unlocking hydraulic cylinder, and a seal; the first and second bases are arranged vertically, and the second, third, and fourth bases are arranged side by side in sequence; multiple first through holes are arranged at intervals on the side of the first base, pin shafts are arranged in the first through holes, and locking cranks are hingedly connected to the pin shafts; multiple second through holes are arranged at intervals on the side of the second base, and multiple third through holes are arranged at intervals on the side of the third base; a first through groove is formed on the top surface at one end of the first base, and multiple second through grooves are arranged at intervals on the side of the fourth base; a tensioning hydraulic cylinder is arranged in the first through groove, one end of the tensioning hydraulic cylinder is hingedly connected to one end of the first through groove through a pin shaft, and the other end of the tensioning hydraulic cylinder penetrates through the other end of the first through groove and is hingedly connected to the top surface of the second base; each of the multiple locking cranks includes a fixed side plate, a fixed shaft, and a fixed handle. One end of the fixed side plate is hingedly connected to the pin shaft, and the other end of the fixed side plate is fixedly connected to one end of the fixed shaft; the other end of the fixed shaft penetrates through the second through hole, the third through hole, and is fixedly connected to the middle of the fixed handle. The axes of the fixed side plate and the fixed handle form an included angle A; the fixed side plate of one of the locking cranks is hingedly connected to one end of the tensioning hydraulic cylinder; the unlocking hydraulic cylinder is fixed on one side of the second base, and the telescopic end of the unlocking hydraulic cylinder penetrates through the second base and is connected to the third base, driving the third base to perform reciprocating telescopic motion; in the application of this design, by contracting the tensioning hydraulic cylinder and rotating the fixed handle to make the fixed handle become an obstacle, and then by extending the unlocking hydraulic cylinder to bring the third base and the fourth base closer and abut the fourth base against the fixed handle, thereby forming a sealing effect. Conversely, in the locking and unlocking processes, the locking and unlocking operations can be quickly completed through the telescopic cooperation of the tensioning hydraulic cylinder and the unlocking hydraulic cylinder, improving the construction efficiency, and there is no need to adjust the torque one by one, reducing the difficulty of pre-tightening. Therefore, the present invention not only has a high construction efficiency but also a low pre-tightening difficulty.

[0024] 2. In a water hydraulic sealing and locking device of the present invention, the length of the fixed handle is less than the length of the second through groove and greater than the height of the second through groove. The fixed handle penetrates through the second through groove and rotates along the axis of the fixed shaft; in the application of this design, the design of the fixed handle enables it to pass through the second through groove and not be able to withdraw after rotation. Cooperating with the unlocking hydraulic cylinder and the tensioning hydraulic cylinder, a good sealing effect can be formed without repeatedly adjusting the pre-tightening force. In an extreme environment such as underwater or at high altitude, the fewer the operation steps, the lower the construction risk and the higher the safety of the construction personnel. Therefore, the present invention not only has a high construction efficiency but also a high safety.

[0025] 3. In a water hydraulic sealing and locking device of the present invention, a third through groove is provided on the top surface of the other end of the first base body. A second tensioning hydraulic cylinder is arranged in the third through groove. The second tensioning hydraulic cylinder is symmetrically arranged with the tensioning hydraulic cylinder. The second telescopic rod of the second tensioning hydraulic cylinder is hinged to the fixed side plate of one of the locking cranks. In the application of this design, by arranging the symmetric second tensioning hydraulic cylinder and the tensioning hydraulic cylinder to cooperate with each other, the efficiency of rotating the fixed handle can be further improved, and at the same time, the unilateral force is reduced, making the overall force of the device more uniform and beneficial to improving the service life. Therefore, the present invention not only has a high construction efficiency but also a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the structural explosion diagram of the present invention.

[0027] Figure 2 is the structural diagram of the first circular groove in the present invention.

[0028] Figure 3 is the structural diagram of the second circular groove in the present invention.

[0029] Figure 4 is the structural diagram of the piston rod locking cover in the present invention.

[0030] Figure 5 is the structural diagram of the locking crank in the present invention.

[0031] Figure 6 is the schematic diagram of the included angle A in the present invention.

[0032] Figure 7 is the structural diagram of the unlocking hydraulic cylinder in the present invention.

[0033] Figure 8 is the structural diagram of the second tensioning hydraulic cylinder in the present invention.

[0034] Figure 9 is the reference diagram of the locking state of the present invention.

[0035] Figure 10 is the reference diagram of the unlocking state of the present invention.

[0036] In the figure: first base body 1, first through slot 11, first through hole 12, third through slot 13, second tensioning hydraulic cylinder 14, second telescopic rod 141, second base body 2, second through hole 21, second through slot 22, first circular groove 23, first groove through hole 231, annular fixing member 24, third base body 3, third through hole 31, second circular groove 32, second groove through hole 321, piston rod locking cover 33, upper cover disc body 331, lower cover column body 332, bolt hole 333, bolt 334, fourth base body 4, multiple locking cranks 5, fixed side plate 51, fixed shaft 52, fixed handle 53, included angle A54, pin shaft 6, tensioning hydraulic cylinder 7, telescopic rod 71, fixed rod 72, unlocking hydraulic cylinder 8, fixed hydraulic cylinder 81, fixed plate 82, guide rod 83, piston rod 84, seal 9, third through slot 91. Detailed implementation mode

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and the detailed implementation mode.

[0038] See Figure 1 — Figure 7 , a water hydraulic seal locking device, the locking device includes a first base body 1, a second base body 2, a third base body 3, a fourth base body 4, multiple locking cranks 5, a pin shaft 6, a tensioning hydraulic cylinder 7 and an unlocking hydraulic cylinder 8;

[0039] The first base body 1 and the second base body 2 are arranged up and down, and the second base body 2, the third base body 3 and the fourth base body 4 are arranged side by side in sequence;

[0040] One end top surface of the first base body 1 is provided with a first through slot 11, and the side surface of the fourth base body 4 is provided with a plurality of second through slots 22 at intervals; a plurality of first through holes 12 are arranged on the side surface of the first base body 1 at intervals, a pin shaft 6 is arranged in each of the first through holes 12, a locking crank 5 is hinged to each of the pin shafts 6, a plurality of second through holes 21 are arranged on the side surface of the second base body 2 at intervals, and a plurality of third through holes 31 are arranged on the side surface of the third base body 3 at intervals;

[0041] A tensioning hydraulic cylinder 7 is arranged in the first through slot 11, one end of the telescopic rod 71 of the tensioning hydraulic cylinder 7 is hinged to one end of the first through slot 11 through a pin shaft 6, and one end of the fixed rod 72 of the tensioning hydraulic cylinder 7 penetrates through the other end of the first through slot 11 and is hinged to the top surface of the second base body 2;

[0042] The multiple locking cranks 5 each include a fixed side plate 51, a fixed shaft 52 and a fixed handle 53. One end of the fixed side plate 51 is hinged to the pin shaft 6, and the other end of the fixed side plate 51 is fixedly connected to one end of the fixed shaft 52; the other end of the fixed shaft 52 passes through the second through hole 21, the third through hole 31 and is fixedly connected to the middle part of the fixed handle 53. The axes of the fixed side plate 51 and the fixed handle 53 are arranged at an angle to form an angle A54; the fixed side plate 51 of one of the locking cranks 5 is hinged to the telescopic rod 71 of the tensioning hydraulic cylinder 7.

[0043] The unlocking hydraulic cylinder 8 is fixed to one side of the second base 2. The piston rod 84 of the unlocking hydraulic cylinder 8 passes through the second base 2 and is connected to the third base 3, and drives the third base 3 to perform reciprocating telescopic movement.

[0044] The length of the fixed handle 53 is less than the length of the second through slot 22 and greater than the height of the second through slot 22. The fixed handle 53 passes through the second through slot 22 and rotates along the axis of the fixed shaft 52.

[0045] On the other side of the second base 2, between two adjacent second through holes 21, there are first circular grooves 23 provided. At the axis center of the first circular groove 23, there is a first groove through hole 231 opened; on the other side of the third base 3, between two adjacent third through holes 31, there are second circular grooves 32 provided. At the axis center of the second circular groove 32, there is a second groove through hole 321 opened; in the first circular groove 23, there is an annular fixing member 24 provided, and in the second circular groove 32, there is a piston rod locking cover 33 provided.

[0046] The piston rod locking cover 33 includes an upper cover disc body 331 and a lower cover cylinder body 332. On the upper cover disc body 331, there are a number of bolt holes 333 provided. In each of the bolt holes 333, there is a bolt 334 provided. The upper cover disc body 331 is fixed in the second circular groove 32 through the bolt 334, and the lower cover cylinder body 332 extends into the second groove through hole 321.

[0047] Between two adjacent locking cranks 5, there is an unlocking hydraulic cylinder 8 provided. The unlocking hydraulic cylinder 8 includes a fixed oil cylinder 81, a fixed plate 82, a guide rod 83 and a piston rod 84; one end of the fixed oil cylinder 81 is fixedly connected to the top surface of the fixed plate 82, one end of the guide rod 83 is fixedly connected to the bottom surface of the fixed plate 82, and the piston rod 84 is movably arranged in the guide rod 83 and performs reciprocating telescopic movement;

[0048] The bottom surface of the fixed plate 82 is fixedly connected to one side of the second base 2. The guide rod 83 passes through the first groove through hole 231 and extends into the annular fixing member 24, and the piston rod 84 extends into the second groove through hole 321 and is fixedly connected to the lower cover cylinder body 332.

[0049] A sealing member 9 is disposed between the third substrate 3 and the fourth substrate 4 , and a plurality of third through grooves 91 corresponding to the plurality of second through grooves 22 are disposed on the sealing member 9 .

[0050] The sealing member 9 is a long sheet of rubber.

[0051] The first substrate 1 , the second substrate 2 , the third substrate 3 and the fourth substrate 4 are square strip substrates with equal lengths.

[0052] The angle A54 is between 30° and 60°.

[0053] A third through groove 13 is formed on the top surface of the other end of the first base body 1, and a second tensioning hydraulic cylinder 14 is arranged in the third through groove 13. The second tensioning hydraulic cylinder 14 is symmetrically arranged with the tensioning hydraulic cylinder 7, and a second telescopic rod 141 of the second tensioning hydraulic cylinder 14 is hingedly connected to a fixed side plate 51 of one of the locking cranks 5.

[0054] The principle of the present invention is described as follows:

[0055] In this design, the locking and locking force control are achieved through the T-shaped structure of the locking crank 5 and the tensioning hydraulic cylinder 7 and the unlocking hydraulic cylinder 8. By presetting the cylinder pressure of the unlocking hydraulic cylinder 8, rapid sealing and releasing under specific requirements can be achieved.

[0056] Embodiment 1:

[0057] See also Figure 1 — Figure 7, a water hydraulic sealing and locking device, the locking device comprising a first base body 1, a second base body 2, a third base body 3, a fourth base body 4, a plurality of locking cranks 5, a pin shaft 6, a tensioning hydraulic cylinder 7 and an unlocking hydraulic cylinder 8; the first base body 1 and the second base body 2 are arranged up and down, and the second base body 2, the third base body 3 and the fourth base body 4 are arranged side by side in sequence; a plurality of first through holes 12 are arranged at intervals on the side surface of the first base body 1, pin shafts 6 are arranged in the first through holes 12, and locking cranks 5 are hinged to the pin shafts 6; a plurality of second through holes 21 are arranged at intervals on the side surface of the second base body 2, and a plurality of third through holes 31 are arranged at intervals on the side surface of the third base body 3; a first through groove 11 is formed in the top surface of one end of the first base body 1, and a plurality of second through grooves 22 are arranged at intervals on the side surface of the fourth base body 4; a tensioning hydraulic cylinder 7 is arranged in the first through groove 11, one end of the tensioning hydraulic cylinder 7 is hinged to one end of the first through groove 11 through a pin shaft 6, and the other end of the tensioning hydraulic cylinder 7 penetrates through the other end of the first through groove 11 and is hinged to the top surface of the second base body 2; each of the plurality of locking cranks 5 comprises a fixed side plate 51, a fixed shaft 52 and a fixed handle 53, one end of the fixed side plate 51 is hinged to the pin shaft 6, and the other end of the fixed side plate 51 is fixedly connected to one end of the fixed shaft 52; the other end of the fixed shaft 52 penetrates through the second through hole 21, the third through hole 31 and is fixedly connected to the middle of the fixed handle 53, and an included angle A54 is formed between the axis of the fixed side plate 51 and the axis of the fixed handle 53; the length of the fixed handle 53 is less than the length of the second through groove 22 and greater than the height of the second through groove 22, and the fixed handle 53 penetrates through the second through groove 22 and rotates along the axis of the fixed shaft 52; one end of the fixed side plate 51 of one of the locking cranks 5 is hinged to one end of the tensioning hydraulic cylinder 7; the unlocking hydraulic cylinder 8 is fixed to one side of the second base body 2, and a piston rod 84 of the unlocking hydraulic cylinder 8 penetrates through the second base body 2 and is connected to the third base body 3, and drives the third base body 3 to perform reciprocating telescopic motion.

[0058] In application, the third base body 3 and the fourth base body 4 of the locking device need to be welded and fixed to two plane bodies to be sealed respectively;

[0059] See Figure 9, when performing the locking operation, at this time the tensioning hydraulic cylinder 7 is in the extended state, the fixed handle 53 and the second through slot 22 are in a horizontal state. The fixed handle 53 is passed through the second through slot 22 to the outside of the fourth base body 4, and then the tensioning hydraulic cylinder 7 is adjusted to contract. The contraction of the tensioning hydraulic cylinder 7 drives a fixed side plate 51 connected thereto to move to the other side, and at the same time pushes the first base body 1 to move to the other side. Furthermore, all the locking cranks 5 are driven by the first base body 1 to move to the other side, and the fixed handle 53 is driven to rotate, so that the fixed handle 53 and the second through slot 22 become perpendicular. Then the piston rod 84 of the unlocking hydraulic cylinder 8 extends, and the third base body 3 is moved closer to the fourth base body 4. Since the fixed handle 53 and the second through slot 22 are in a perpendicular state, the movement of the third base body 3 closer to the fourth base body 4 is blocked by the fixed handle 53, so that the third base body 3 and the fourth base body 4 are abutted against the fixed handle 53, forming a clamping and sealing effect, thereby completing the sealing operation of the two planar bodies.

[0060] See Figure 10 , when performing the unlocking operation, first, the tensioning hydraulic cylinder 7 is adjusted to extend. The tensioning hydraulic cylinder 7 drives a plurality of locking cranks 5 to move to one side, and drives the fixed handle 53 to rotate, so that the fixed handle 53 and the second through slot 22 change from a perpendicular state to a horizontal state. Then the piston rod 84 of the unlocking hydraulic cylinder 8 contracts, so that the third base body 3 moves away from the fourth base body 4, thereby completing the unlocking operation.

[0061] Embodiment 2:

[0062] The basic content is the same as that of Embodiment 1, the difference is that:

[0063] On the other side of the second base body 2, first circular grooves 23 are provided between every two adjacent second through holes 21. A first groove through hole 231 is formed at the axis center of the first circular groove 23. On the other side of the third base body 3, second circular grooves 32 are provided between every two adjacent third through holes 31. A second groove through hole 321 is formed at the axis center of the second circular groove 32. An annular fixing member 24 is arranged in the first circular groove 23, and a piston rod locking cover 33 is arranged in the second circular groove 32. The piston rod locking cover 33 includes an upper cover disc body 331 and a lower cover column body 332. A plurality of bolt holes 333 are formed in the upper cover disc body 331, and bolts 334 are arranged in the bolt holes 333. The upper cover disc body 331 is fixed in the second circular groove 32 through the bolts 334, and the lower cover column body 332 extends into the second groove through hole 321. An unlocking hydraulic cylinder 8 is arranged between every two adjacent locking cranks 5. The unlocking hydraulic cylinder 8 includes a fixed oil cylinder 81, a fixing plate 82, a guide rod 83 and a piston rod 84. One end of the fixed oil cylinder 81 is fixedly connected to the top surface of the fixing plate 82. One end of the guide rod 83 is fixedly connected to the bottom surface of the fixing plate 82. The piston rod 84 is movably arranged in the guide rod 83 and performs reciprocating telescopic motion. The bottom surface of the fixing plate 82 is fixedly connected to one side of the second base body 2. The guide rod 83 penetrates through the first groove through hole 231 and extends into the annular fixing member 24. The piston rod 84 extends into the second groove through hole 321 and is fixedly connected to the lower cover column body 332.

[0064] In application, the unlocking hydraulic cylinder 8 is fixed to one side of the second base body 2. The guide rod 83 penetrates through the first groove through hole 231 and is fixed by the annular fixing member 24. The piston rod 84 penetrates through the second groove through hole 321 and is fixedly connected to the lower cover column body 332. When the piston rod 84 performs reciprocating telescopic motion, the third base body 3 is driven to perform synchronous reciprocating telescopic motion.

[0065] Embodiment 3:

[0066] The basic content is the same as that of Embodiment 2, and the difference lies in:

[0067] A sealing member 9 (preferably a strip-shaped rubber member) is arranged between the third base body 3 and the fourth base body 4. A plurality of third through grooves 91 corresponding to the plurality of second through grooves 22 are arranged on the sealing member 9.

[0068] In application, the sealing member 9 is arranged between the third base body 3 and the fourth base body 4. When locking, the third base body 3 and the fourth base body 4 are clamped more tightly, providing a better sealing effect.

[0069] Embodiment 4:

[0070] The basic content is the same as that of Embodiment 3, except that:

[0071] The included angle A54 is 30° - 60° (preferably 45°).

[0072] In application, the rotation of the fixed handle 53 is controlled by the telescopic movement of the tensioning hydraulic cylinder 7. Therefore, there must be a certain angle between the fixed side plate 51 and the fixed handle 53, so that the rotation can be completed within a shorter telescopic stroke, improving the construction efficiency. Moreover, when the fixed handle 53 and the second through groove 22 are perpendicular to each other, the force-bearing effect of the fixed handle 53 is the best.

[0073] Embodiment 5:

[0074] The basic content is the same as that of Embodiment 4, except that:

[0075] Refer to Figure 8 , a third through groove 13 is provided on the top surface of the other end of the first base body 1, a second tensioning hydraulic cylinder 14 is arranged in the third through groove 13, the second tensioning hydraulic cylinder 14 is symmetrically arranged with the tensioning hydraulic cylinder 7, and the second telescopic rod 141 of the second tensioning hydraulic cylinder 14 is hinged to the fixed side plate 51 of one of the locking cranks 5.

[0076] In application, the second tensioning hydraulic cylinder 14 can be symmetrically arranged and cooperate with the tensioning hydraulic cylinder 7. When the tensioning hydraulic cylinder 7 extends, the second tensioning hydraulic cylinder 14 contracts, and vice versa. In this way, not only can the state of the fixed handle 53 be changed more quickly, but also the overall structure is more evenly stressed during the bilateral coordinated operation, which is beneficial to improving the service life of the device.

[0077] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those of ordinary skill in the art according to the disclosure of the present invention shall be included in the protection scope recorded in the claims.

Claims

1. A water hydraulic seal locking device, characterized in that: The locking device includes a first base body (1), a second base body (2), a third base body (3), a fourth base body (4), a plurality of locking cranks (5), a pin shaft (6), a tensioning hydraulic cylinder (7) and an unlocking hydraulic cylinder (8); The first base body (1) and the second base body (2) are arranged up and down, and the second base body (2), the third base body (3) and the fourth base body (4) are arranged side by side in sequence; One end of the top surface of the first base body (1) is provided with a first through groove (11), and a plurality of second through grooves (22) are arranged at intervals on the side surface of the fourth base body (4); a plurality of first through holes (12) are arranged at intervals on the side surface of the first base body (1), a pin shaft (6) is arranged in each of the first through holes (12), and a locking crank (5) is hinged to each of the pin shafts (6), a plurality of second through holes (21) are arranged at intervals on the side surface of the second base body (2), and a plurality of third through holes (31) are arranged at intervals on the side surface of the third base body (3); A tensioning hydraulic cylinder (7) is arranged in the first through groove (11), one end of the telescopic rod (71) of the tensioning hydraulic cylinder (7) is hinged to one end of the first through groove (11) through a pin shaft (6), and one end of the fixed rod (72) of the tensioning hydraulic cylinder (7) penetrates through the other end of the first through groove (11) and is hinged to the top surface of the second base body (2); Each of the plurality of locking cranks (5) includes a fixed side plate (51), a fixed shaft (52) and a fixed handle (53). One end of the fixed side plate (51) is hinged to the pin shaft (6), and the other end of the fixed side plate (51) is fixedly connected to one end of the fixed shaft (52); the other end of the fixed shaft (52) penetrates through the second through hole (21), the third through hole (31) and the middle part of the fixed handle (53) and is fixedly connected, and an included angle A (54) is formed by arranging the axes of the fixed side plate (51) and the fixed handle (53) at an included angle; one end of the fixed side plate (51) of one of the locking cranks (5) is hinged to the telescopic rod (71) of the tensioning hydraulic cylinder (7); The unlocking hydraulic cylinder (8) is fixed on one side of the second base body (2), and the piston rod (84) of the unlocking hydraulic cylinder (8) penetrates through the second base body (2) and is connected to the third base body (3), and drives the third base body (3) to perform reciprocating telescopic motion.

2. The water hydraulic sealing locking device according to claim 1, wherein: The length of the fixed handle (53) is less than the length of the second through groove (22), and the length of the fixed handle (53) is greater than the height of the second through groove (22). The fixed handle (53) penetrates through the second through groove (22) and rotates along the axis of the fixed shaft (52).

3. The water hydraulic sealing locking device according to claim 2, wherein: On the other side of the second base body (2), a first circular groove (23) is provided between every two adjacent second through holes (21), and a first groove through hole (231) is provided at the axis center of the first circular groove (23); on the side of the third base body (3) facing the fourth base body (4), a second circular groove (32) is provided between every two adjacent third through holes (31), and a second groove through hole (321) is provided at the axis center of the second circular groove (32); an annular fixing member (24) is arranged in the first circular groove (23), and a piston rod locking cover (33) is arranged in the second circular groove (32).

4. A water hydraulic sealing and locking device according to claim 3, wherein: The piston rod locking cover (33) comprises an upper cover disc body (331) and a lower cover column body (332). A plurality of bolt holes (333) are provided on the upper cover disc body (331), bolts (334) are arranged in the bolt holes (333), the upper cover disc body (331) is fixed in the second circular groove (32) through the bolts (334), and the lower cover column body (332) extends into the second groove through hole (321).

5. A water hydraulic sealing and locking device according to claim 4, wherein: An unlocking hydraulic cylinder (8) is arranged between every two adjacent locking cranks (5). The unlocking hydraulic cylinder (8) comprises a fixed oil cylinder (81), a fixing plate (82), a guide rod (83) and a piston rod (84); one end of the fixed oil cylinder (81) is fixedly connected to the top surface of the fixing plate (82), one end of the guide rod (83) is fixedly connected to the bottom surface of the fixing plate (82), and the piston rod (84) is movably arranged in the guide rod (83) and performs reciprocating telescopic movement; The bottom surface of the fixing plate (82) is fixedly connected to one side of the second base body (2), the guide rod (83) penetrates through the first groove through hole (231) and extends into the annular fixing member (24), and the piston rod (84) extends into the second groove through hole (321) and is fixedly connected to the lower cover column body (332).

6. A water hydraulic sealing and locking device according to any one of claims 1-5, wherein: A sealing member (9) is arranged between the third base body (3) and the fourth base body (4), and the sealing member (9) is provided with a plurality of third through grooves corresponding to a plurality of second through grooves (22).

7. A water hydraulic sealing and locking device according to claim 6, wherein: The sealing member (9) is a strip-shaped rubber member.

8. A water hydraulic sealing and locking device according to any one of claims 1-5, wherein: The first base body (1), the second base body (2), the third base body (3) and the fourth base body (4) are square strip-shaped base bodies with equal lengths.

9. A water hydraulic sealing and locking device according to any one of claims 1-5, wherein: The included angle A (54) is 30°-60°.

10. A water hydraulic sealing and locking device according to any one of claims 1-5, characterized in that: A third through groove is formed in the top surface of the other end of the first base body (1), a second tensioning hydraulic cylinder (14) is arranged in the third through groove, the second tensioning hydraulic cylinder (14) is symmetrically arranged with the tensioning hydraulic cylinder (7), and a second telescopic rod (141) of the second tensioning hydraulic cylinder (14) is hinged to a fixed side plate (51) of one of the locking cranks (5).

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