Driving hydraulic torque wrench

Abstract

The utility model relates to the technical field of wrenches, in particular to a driving hydraulic torque wrench which comprises a shell, the shell comprises a wrench body, the inner side of the wrench body is movably connected with a hexagonal sleeve, and a hydraulic connector is arranged on the surface of the wrench body. And an adjusting mechanism is arranged on the inner side of the hexagonal sleeve. By rotating the rotating rod, the second conical teeth can drive the screw rod to rotate under the action of the first conical teeth, so that the moving block can drive the connecting plates to move, the distance between the connecting plates is changed, and the connecting plates can adapt to bolts or nuts of different sizes and specifications to be adjusted; the hexagonal sleeve is arranged on the wrench body, so that bolts or nuts of different sizes can be fixed after entering the hexagonal sleeve, the bolts or the nuts are not prone to loosening or falling in the hexagonal sleeve, the screwing effect and stability of the bolts or the nuts can be guaranteed, and the using flexibility and applicability of the wrench body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a driven hydraulic torque wrench. Background Art

[0002] A wrench is a tool used to tighten or loosen nuts and bolts. It is usually made of metal and has a handle and a head for securing the nut or bolt. A hydraulic torque wrench is a tool specifically designed for high-torque applications. It uses a hydraulic system to generate torque and transmits the torque to the nut or bolt through a drive head. The principle is to use the hydraulic pump to generate pressure after startup, and transmit hydraulic oil through the oil pipe to the hydraulic torque wrench, which in turn pushes the piston rod. The piston rod drives the ratchet at the front of the wrench, so that the ratchet drives the drive shaft to complete the pre-tightening and loosening of the bolts. The hydraulic torque wrench can accurately control the torque value to ensure the accuracy and consistency of bolt tightening. It is also suitable for tightening and removing large-sized bolts and can cope with high-intensity working conditions.

[0003] In the prior art, when a bolt or nut is tightened by driving a hydraulic torque wrench, the bolt or nut usually needs to enter the hexagonal socket of the driving hydraulic torque wrench, and a hydraulic system needs to be used to generate torque, and the torque is transmitted to the bolt or nut through a ratchet, so that the tightening can be achieved. Due to the different sizes and specifications of the bolts or nuts, the setting of the hexagonal socket cannot adapt well to the adjustment of bolts or nuts of different sizes, and thus when the bolt or nut is tightened, the bolt or nut cannot be fixed well, so that the bolt or nut is prone to loosening and falling off, which affects the effect of tightening the bolt or nut. Therefore, in order to solve the above problems, a driving hydraulic torque wrench is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a driven hydraulic torque wrench to solve the problem mentioned in the above background technology that due to the different sizes and specifications of bolts or nuts, the setting of the hexagonal socket cannot adapt well to the adjustment of bolts or nuts of different sizes, and thus cannot well fix the bolts or nuts when tightening them, so that the bolts or nuts are prone to loosening and falling off, which affects the effect of tightening the bolts or nuts.

[0005] To achieve the above object, the present invention provides the following technical solution: a driven hydraulic torque wrench, comprising a housing, the housing comprising a wrench body, a hexagonal sleeve movably connected to the inner side of the wrench body, and a hydraulic joint provided on the surface of the wrench body;

[0006] An adjustment mechanism is provided on the inner side of the hexagonal sleeve, and the adjustment mechanism includes a fixed block, which is fixedly connected to the top end of the hexagonal sleeve. A movable groove is provided on the inner side of the fixed block, and a rotating rod is movably connected to the inner side of the movable groove. The bottom end of the rotating rod is fixedly connected to a first conical tooth, and a screw is movably connected to the inner side of the movable groove. The surface of the screw is fixedly connected to a second conical tooth, and the surface of the screw is threadedly connected to a moving block, and the lower surface of the moving block is fixedly connected to a connecting plate.

[0007] Preferably, the adjustment mechanism further includes a limiting rod, the limiting rod is fixedly connected to the inner wall of the movable groove, the movable block is movably connected to the limiting rod, and the rotating rod is movably connected to the fixed block.

[0008] Preferably, the movable grooves are formed into six groups and are opened on the inner side of the fixed block, the screw rods are formed into six groups and are connected to the movable grooves correspondingly, and the movable blocks are formed into six groups and are connected to the screw rods correspondingly.

[0009] Preferably, the movable block moves inside the movable groove, and the connecting plates are in six groups and are connected to the movable blocks accordingly.

[0010] Preferably, a stabilizing mechanism is provided on the surface of the hydraulic joint, and the stabilizing mechanism includes a fixing sleeve, which is fixedly connected to the surface of the hydraulic joint, and a telescopic groove is provided on the inner side of the fixing sleeve, and a spring is fixedly connected to the inner wall of the telescopic groove, and a bump is fixedly connected to the surface of the spring.

[0011] Preferably, one end of the spring is fixedly connected to the telescopic slot, and the other end of the spring is fixedly connected to the protrusion, and the protrusion moves inside the telescopic slot.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By rotating the rotating rod, the second conical teeth can drive the screw to rotate under the action of the first conical teeth, and then the moving block can drive the connecting plate to move, so that the spacing of the connecting plates changes, so that the connecting plates can be adjusted to bolts or nuts of different sizes, and then bolts or nuts of different sizes can be fixed after entering the hexagonal sleeve, so that the bolts or nuts are not easy to loosen or fall off in the hexagonal sleeve, which can ensure the effect and stability of tightening the bolts or nuts, and is conducive to improving the flexibility and applicability of the wrench body.

[0014] 2. By setting the spring, the protrusion can move inside the telescopic groove and exert a certain force on the protrusion. After the hydraulic pump connector and the hydraulic connector are connected, the connector can enter the fixed sleeve and can be abutted by the protrusion. Therefore, the connection between the hydraulic pump connector and the hydraulic connector can be more stable, which can ensure the quality and effect of the connection, and thus facilitate better driving of the wrench body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic front view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model in an exploded front view;

[0017] Figure 3 This is an exploded top view of the structure of the fixing block and the connecting plate of the utility model;

[0018] Figure 4 This is a schematic diagram of a top view and a cross-sectional explosion of the structure of the screw and the connecting plate of the utility model;

[0019] Figure 5 This is a side sectional exploded schematic diagram of the structure of the hydraulic joint and the fixing sleeve of the utility model;

[0020] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1. Wrench body; 11. Hexagonal socket; 12. Hydraulic joint; 2. Fixed block; 21. Movable slot; 22. Rotating rod; 23. First conical tooth; 24. Screw; 25. Second conical tooth; 26. Moving block; 27. Connecting plate; 28. Limiting rod; 3. Fixed sleeve; 31. Telescopic slot; 32. Spring; 33. Bump. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6 , an embodiment provided by the utility model:

[0024] A driven hydraulic torque wrench includes a housing, which includes a wrench body 1. A hexagonal sleeve 11 is movably connected to the inner side of the wrench body 1. A hydraulic joint 12 is provided on the surface of the wrench body 1. The hydraulic joint 12 can be connected to a hydraulic pump, and the hydraulic pump can transmit its internal hydraulic oil to the wrench body 1 through the hydraulic joint 12, so that the hydraulic cylinder of the wrench body 1 can push the piston to generate displacement. The movement of the piston can be converted into rotational force through a transmission component, so that the piston rod can drive the ratchet at the front of the wrench to move, so that the hexagonal sleeve 11 can drive the bolt or nut to rotate under the action of the ratchet.

[0025] An adjusting mechanism is provided on the inner side of the hexagonal sleeve 11, which includes a fixed block 2, which is fixedly connected to the top of the hexagonal sleeve 11, and a movable groove 21 is provided on the inner side of the fixed block 2. A rotating rod 22 is movably connected to the inner side of the movable groove 21, and the bottom end of the rotating rod 22 is fixedly connected to a first conical tooth 23. A screw 24 is movably connected to the inner side of the movable groove 21, and a second conical tooth 25 is fixedly connected to the surface of the screw 24. A movable block 26 is threadedly connected to the surface of the screw 24, and a connecting plate 27 is fixedly connected to the lower surface of the movable block 26. By rotating the rotating rod 22, the first conical tooth 23 can rotate under the action of the rotating rod 22, and then the second conical tooth 25 can drive the screw 24 to rotate under the action of the first conical tooth 23, so that the six groups of movable blocks 26 can simultaneously drive the connecting plate 27 to move, so that the connecting plate 27 can clamp bolts and nuts of different sizes.

[0026] Furthermore, the adjustment mechanism also includes a limit rod 28, which is fixedly connected to the inner wall of the movable groove 21, the movable block 26 and the limit rod 28 are movably connected, and the rotating rod 22 and the fixed block 2 are movably connected. Through the setting of the limit rod 28, the movable block 26 can be limited, and the movable block 26 can be prevented from being offset under the action of the screw 24, so that the movable block 26 can drive the connecting plate 27 to move stably.

[0027] Furthermore, the movable grooves 21 are arranged in six groups on the inner side of the fixed block 2, the screw rods 24 are arranged in six groups and connected to the movable grooves 21, and the movable blocks 26 are arranged in six groups and connected to the screw rods 24. By rotating the screw rods 24, the movable blocks 26 can drive the connecting plate 27 to move, thereby adjusting the position of the connecting plate 27, so that bolts and nuts of different sizes can be fixed after entering the hexagonal sleeve 11, thereby ensuring the stability of the screwing of the bolts and nuts.

[0028] Furthermore, the movable block 26 moves on the inner side of the movable groove 21, and the connecting plates 27 are connected to the movable blocks 26 in six groups. The connecting plates 27 are driven to move by the movable blocks 26, so that the spacing of the connecting plates 27 can be changed, thereby making the setting of the hexagonal sleeve 11 adaptable to bolts or nuts of different sizes.

[0029] Furthermore, a stabilizing mechanism is provided on the surface of the hydraulic joint 12, which includes a fixing sleeve 3, which is fixedly connected to the surface of the hydraulic joint 12, and a telescopic groove 31 is provided on the inner side of the fixing sleeve 3, and a spring 32 is fixedly connected to the inner wall of the telescopic groove 31, and a protrusion 33 is fixedly connected to the surface of the spring 32. By setting the protrusion 33 and coordinating with the elastic properties of the spring 32, after the joint of the hydraulic pump is connected to the hydraulic joint 12, the protrusion 33 can abut against the joint, thereby making the connection between the joint and the hydraulic joint 12 more stable, thereby ensuring the stable driving of the wrench body 1.

[0030] Furthermore, one end of the spring 32 is fixedly connected to the telescopic slot 31, and the other end of the spring 32 is fixedly connected to the protrusion 33. The protrusion 33 moves on the inner side of the telescopic slot 31. Through the setting of the spring 32, the protrusion 33 can move on the inner side of the telescopic slot 31, thereby facilitating the tightening of the joint of the hydraulic pump through the protrusion 33.

[0031] Working principle: When in use, the rotating rod 22 is rotated, and the first conical teeth 23 will rotate under the action of the rotating rod 22, and then the second conical teeth 25 will rotate under the action of the first conical teeth 23 and drive the screw 24 to rotate. The moving block 26 is limited by the limiting rod 28 and will move inside the movable groove 21 under the action of the screw 24, thereby enabling the connecting plate 27 to move accordingly, so that the position of the connecting plate 27 can be adjusted to the size of the bolt or nut, and then after bolts or nuts of different sizes enter the hexagonal sleeve 11, they can be fixed by the connecting plate 27;

[0032] When the connector of the hydraulic pump is connected to the hydraulic connector 12, the connector of the hydraulic pump will enter the fixed sleeve 3, and the protrusion 33 will be squeezed by the connector of the hydraulic pump and will move toward the inside of the telescopic groove 31, causing the spring 32 to deform. At the same time, the spring 32 will exert a certain force on the protrusion 33, so that the protrusion 33 can be pressed against the surface of the connector of the hydraulic pump, thereby strengthening the connection between the connector of the hydraulic pump and the hydraulic connector 12.

[0033] The above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A driven hydraulic torque wrench, comprising a housing, the housing comprising a wrench body (1), a hexagonal sleeve (11) movably connected to the inner side of the wrench body (1), and a hydraulic joint (12) provided on the surface of the wrench body (1); It is characterized by: An adjusting mechanism is provided on the inner side of the hexagonal sleeve (11), and the adjusting mechanism comprises a fixed block (2), the fixed block (2) is fixedly connected to the top end of the hexagonal sleeve (11), a movable groove (21) is provided on the inner side of the fixed block (2), a rotating rod (22) is movably connected to the inner side of the movable groove (21), a first conical tooth (23) is fixedly connected to the bottom end of the rotating rod (22), a screw rod (24) is movably connected to the inner side of the movable groove (21), a second conical tooth (25) is fixedly connected to the surface of the screw rod (24), a movable block (26) is threadedly connected to the surface of the screw rod (24), and a connecting plate (27) is fixedly connected to the lower surface of the movable block (26).

2. A driving hydraulic torque wrench according to claim 1, characterized in that: The regulating mechanism further comprises a limiting rod (28), wherein the limiting rod (28) is fixedly connected to the inner wall of the movable groove (21), the movable block (26) and the limiting rod (28) are movably connected, and the rotating rod (22) and the fixed block (2) are movably connected.

3. The driving hydraulic torque wrench according to claim 1, characterized in that: The movable grooves (21) are arranged in six groups on the inner side of the fixed block (2); the screw rods (24) are arranged in six groups and are connected to the movable grooves (21) in correspondence; and the movable blocks (26) are arranged in six groups and are connected to the screw rods (24) in correspondence.

4. A driven hydraulic torque wrench according to claim 1, characterized in that: The movable block (26) moves inside the movable groove (21), and the connecting plates (27) are in six groups and correspondingly connected to the movable blocks (26).

5. The driving hydraulic torque wrench according to claim 1, characterized in that: The surface of the hydraulic joint (12) is provided with a stabilizing mechanism, the stabilizing mechanism comprising a fixing sleeve (3), the fixing sleeve (3) being fixedly connected to the surface of the hydraulic joint (12), a telescopic groove (31) being provided on the inner side of the fixing sleeve (3), a spring (32) being fixedly connected to the inner wall of the telescopic groove (31), and a bump (33) being fixedly connected to the surface of the spring (32).

6. A driven hydraulic torque wrench according to claim 5, characterized in that: One end of the spring (32) is fixedly connected to the telescopic slot (31), and the other end of the spring (32) is fixedly connected to the convex block (33), and the convex block (33) moves inside the telescopic slot (31).

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