CN219685369U - Hydraulic wrench for stretching stud washer - Google Patents

Abstract

The utility model belongs to the technical field of hydraulic wrenches, and particularly relates to a hydraulic wrench for a stretching stud washer. The utility model provides a hydraulic wrench which can fix a washer and simultaneously apply torque to a nut. The hydraulic wrench comprises a hydraulic wrench body and an inner sleeve, wherein wrench inner teeth are arranged on the hydraulic wrench body, teeth matched with the wrench inner teeth are arranged on the upper portion of the inner sleeve, a limiting space for fixing a nut is arranged in the lower portion of the inner sleeve, a gasket fixing device is arranged outside the inner sleeve, the gasket fixing device comprises an outer gear ring, an outer sleeve, a gasket ring and other mechanisms, and the effect that the gasket is fixed when torque is applied to the nut by the inner sleeve is achieved through a static piece which combines the gasket ring, the outer sleeve, the outer gear ring and the hydraulic wrench body into a whole.

Description

Hydraulic wrench for stretching stud washer

Technical Field

The utility model belongs to the technical field of hydraulic wrenches, and particularly relates to a hydraulic wrench for a stretching stud washer.

Background

In order to realize the multiple disassembly of the nut without scratching the end face of the fastened substrate, the fastening nut stretches the screw rod to form pretightening force. A gasket is arranged between the nut and the end face of the fastened base body, and the gasket is attached to the end face of the fastened base body and kept relatively static. Most of the existing hydraulic wrenches provide single torque, and can not meet the requirement of stretching a stud, and meanwhile, the gasket is kept relatively fixed.

Disclosure of Invention

In order to solve the problems, the utility model provides a hydraulic wrench which can apply torque to a nut while fixing a washer.

In order to achieve the purpose, the hydraulic wrench comprises a hydraulic wrench main body and an inner sleeve, wherein wrench inner teeth are arranged on the hydraulic wrench main body and are matched with teeth arranged on the upper portion of the inner sleeve, a limiting space for fixing a nut is arranged in the lower portion of the inner sleeve, and a gasket fixing device is arranged on the outer side of the inner sleeve.

As a preferable scheme of the utility model, the gasket fixing device comprises an upper wrench tooth and a lower wrench tooth which are arranged on a hydraulic wrench main body, the inner sleeve comprises three sections of cylinders with sequentially enlarged diameters from top to bottom, the limiting space is arranged inside the lower cylinder of the inner sleeve, teeth matched with the inner teeth of the wrench are arranged outside the upper cylinder of the inner sleeve, an outer gear ring is sleeved outside the middle cylinder of the inner sleeve, the outer gear ring comprises an upper gear ring and a lower gear ring, the teeth of the upper gear ring are matched with the upper wrench tooth and the lower wrench tooth, a hollow outer sleeve is sleeved outside the lower cylinder of the inner sleeve, teeth matched with the lower gear ring are arranged inside the upper portion of the outer sleeve, a rectangular through groove is formed in the lower portion of the outer sleeve, a flange is arranged below the rectangular through groove inside the outer sleeve, a clamping ring used for supporting the inner sleeve is arranged inside the rectangular through groove, and a gasket ring is arranged inside the flange.

Further, a process hole for weight reduction is formed in the upper cylinder of the inner sleeve.

Further, the lower gear ring is fixed with the outer sleeve through a set screw.

As another preferred embodiment of the present utility model, the snap ring includes two identical outer ring segments with handles and an inner ring segment for connection therebetween, the outer ring segments being connected to the inner ring segments by pins.

Further, a groove for installing a limit steel wire is formed in the outer side of the inner circular ring section of the clamping ring, and two through holes are formed in the corresponding position of the outer sleeve.

The utility model has the beneficial effects that: according to the utility model, the outer sleeve, the outer gear ring, the clamping ring, the gasket ring and other structures are added on the basis of a common hydraulic wrench, the hydraulic wrench main body, the outer gear ring, the outer sleeve, the gasket ring and the gasket are combined into an integral static piece, the purpose that the gasket is fixed while torque is applied to the nut is achieved, the upper wrench tooth and the lower wrench tooth are arranged on the hydraulic wrench main body, the nut can be screwed or taken down from a stud by only turning the hydraulic wrench upside down, and nuts with different sizes are adapted by adjusting Zhang Kaida of the clamping ring.

Drawings

FIG. 1 is a schematic illustration of an application of the present utility model.

Fig. 2 is a schematic view of a sleeve portion of the present utility model.

Fig. 3 is a top view of a sleeve portion of the present utility model.

Fig. 4 is a bottom view of a sleeve portion of the present utility model.

Fig. 5 is a schematic view of the outer sleeve structure.

Figure 6 is a schematic view of the inner sleeve structure.

Figure 7 is a top view of the inner sleeve.

Figure 8 is a bottom view of the inner sleeve.

Fig. 9 is a schematic view of a gasket ring structure.

Fig. 10 is a schematic diagram of a snap ring structure.

Fig. 11 is a schematic view of the structure of the outer gear ring.

Fig. 12 is a view of the exterior of the sleeve portion.

In the drawing, 1 is a hydraulic wrench main body, 2 is an inner sleeve, 3 is a wrench inner tooth, 4 is a washer fixing device, 5 is a wrench upper tooth, 6 is a wrench lower tooth, 7 is a limiting space, 8 is an outer tooth ring, 9 is an upper tooth ring, 10 is a lower tooth ring, 11 is an outer sleeve, 12 is a rectangular through groove, 13 is a flange, 14 is a snap ring, 15 is a washer ring, 16 is a washer, 17 is a process hole, 18 is a set screw, 19 is an outer ring section, 20 is an inner ring section, 21 is a groove, 22 is a through hole, 23 is a limiting steel wire, 24 is a nut, and 25 is a stud.

Detailed Description

The hydraulic wrench comprises a hydraulic wrench body 1 and an inner sleeve 2, wherein wrench inner teeth 3 are arranged on the hydraulic wrench body 1, the wrench inner teeth 3 are matched with teeth arranged on the upper portion of the inner sleeve 2, a limiting space 7 for fixing a nut 24 is arranged in the lower portion of the inner sleeve 2, the limiting space 7 can be designed to be hexagonal with the same outline as that of a hexagonal nut, a gasket fixing device 4 is arranged on the outer side of the inner sleeve 2, the wrench inner teeth 3 and the limiting space 7 in the inner sleeve 2 are used for transmitting torque to the inner sleeve 2, the limiting space 7 in the inner sleeve 2 is used for fixing and transmitting torque to the nut 24, so that the nut 24 is screwed or taken down from a stud 25, and a gasket is fixed through the gasket fixing device 4.

As a preferred scheme of the utility model, the washer fixing device 4 comprises an upper wrench tooth 5 and a lower wrench tooth 6 which are arranged on the hydraulic wrench main body 1, the inner sleeve 2 comprises three sections of cylinders with sequentially enlarged diameters from top to bottom, the limiting space 7 is arranged in the lower cylinder of the inner sleeve 2, teeth matched with the inner wrench tooth 3 are arranged on the outer side of the upper cylinder of the inner sleeve 2, an outer gear ring 8 is sleeved outside the middle cylinder of the inner sleeve 2, the outer gear ring 8 comprises an upper gear ring 9 and a lower gear ring 10, the teeth of the upper gear ring 9 are matched with the upper wrench tooth 5 and the lower wrench tooth 6, the outer cylinder of the inner sleeve 2 is sleeved with a hollow outer sleeve 11, the inner side of the upper portion of the outer sleeve 11 is provided with teeth matched with the lower gear ring 10, the lower portion of the outer sleeve 11 is provided with a rectangular through groove 12, a flange 13 is arranged below the rectangular through groove 12 on the inner side of the outer sleeve 11, a clamping ring 14 used for supporting the inner sleeve 2 is arranged in the rectangular through groove 12, a washer 15 is arranged in the flange 13, the inner teeth of the inner washer 15 are matched with 16, the thickness of the outer ring 15 is smaller than 16, the thickness of the ring 15 is equal to the thickness of the inner ring 15, the inner ring 15 is matched with the outer teeth of the inner ring 16, the inner ring 15, the inner ring 14 is convenient to be arranged as a static support member, and the two-shaped washer is convenient to be arranged, and a static member, and is arranged, and is a stationary, and a supporting member.

The internal tooth 3 of the hydraulic wrench body 1 rotates to transmit torque to the internal sleeve 2, the limiting space 7 in the internal sleeve 2 is fixed and transmits torque to the nut 24, and the lower wrench teeth 6 or the upper wrench teeth 5, the external tooth ring 8, the external sleeve 11, the gasket ring 15 and the gasket 16 on the hydraulic wrench body 1 are sequentially matched and combined into a whole to be in a static state.

Further, a process hole 17 for weight reduction is arranged on the upper cylinder of the inner sleeve 2.

Further, the lower gear ring 10 is fixed to the outer sleeve 11 by a set screw 18, and the upper and lower degrees of freedom of the lower gear ring 10 and the outer sleeve 11 are limited.

As another preferred solution of the present utility model, the snap ring 14 includes two identical outer ring segments 19 with handles and an inner ring segment 20 with a middle for connection, the three segments form an open concentric outer ring segment 19 and the inner ring segment 20 are connected by a pin, two ends of the inner ring segment 20 are rounded corners and are provided with middle grooves at two ends, a flange is provided at a middle position of one end of the outer ring segment 19, a root of the flange is an oblique angle, and a head of the flange is rounded corners. The heads of the grooves and the flanges are respectively provided with a pin shaft for connection, the rotatable angle of the flanges is not less than 30 degrees after the flanges are anastomosed and installed with the grooves, and after the three circular ring sections are connected, the handles on the two outer circular ring sections 19 are splayed outwards.

Further, a groove 21 for installing a limit steel wire 23 is arranged on the outer side of the inner ring section 20 of the snap ring 14, two through holes 22 are arranged on the corresponding position of the outer sleeve 11, and two ends of the limit steel wire extend out of the two through holes 22.

When the nut is screwed down by using the hydraulic wrench, firstly, the gasket ring 15 is sleeved on the gasket 16, the sleeve part of the hydraulic wrench is assembled, the clamping ring 14 is opened, the nut 24 stretches into the inner sleeve 2, the nut 24 is clamped by the inner sleeve 2 and the clamping ring 14, the wrench inner teeth 3 of the hydraulic wrench main body 1 are aligned with teeth on a cylinder on the inner sleeve 2, the wrench lower teeth 6 are aligned with the upper gear ring 9, the hydraulic wrench is started, the wrench inner teeth 3 rotate to drive the inner sleeve 2 to rotate, the nut 24 fixed by the inner sleeve 2 can be screwed down along with the rotation of the inner sleeve 2, and the wrench lower teeth 6, the outer tooth ring 8, the outer sleeve 11, the gasket ring 15 and the gasket 16 are combined into a whole and are stationary; the nut 24 is unscrewed by only turning the hydraulic wrench up and down to enable the wrench upper teeth 5 to be matched with the upper gear ring 9, and the turning back of the wrench inner teeth 3 is opposite in rotation direction to drive the nut 24 to rotate in the loosening direction.

It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.

Claims (6)

1. The utility model provides a hydraulic spanner for tensile double-screw bolt packing ring, includes hydraulic spanner main part (1) and inner skleeve (2), is provided with spanner internal tooth (3) on hydraulic spanner main part (1), spanner internal tooth (3) with set up in the tooth cooperation on inner skleeve (2) upper portion, be provided with spacing space (7) that are used for fixation nut (24) in inner skleeve (2) lower part, its characterized in that, inner skleeve (2) outside is provided with packing ring fixing device (4).

2. The hydraulic wrench for a pull stud bolt washer according to claim 1, wherein the washer fixing device (4) comprises an upper wrench tooth (5) and a lower wrench tooth (6) which are arranged on the hydraulic wrench main body (1), the inner sleeve (2) comprises three sections of cylinders with sequentially larger diameters from top to bottom, the limiting space (7) is arranged inside the lower cylinder of the inner sleeve (2), the outer side of the upper cylinder of the inner sleeve (2) is provided with teeth matched with the inner wrench tooth (3), the middle cylinder of the inner sleeve (2) is sleeved with an outer ring gear (8), the outer ring gear (8) comprises an upper gear ring (9) and a lower gear ring (10), the teeth of the upper gear ring gear (9) are matched with the upper wrench tooth (5) and the lower wrench tooth (6), the outer side of the lower cylinder of the inner sleeve (2) is sleeved with a hollow outer sleeve (11), the inner side of the upper part of the outer sleeve (11) is provided with teeth matched with the lower gear ring gear (10), the lower part of the outer sleeve (11) is provided with a rectangular through groove (12), the inner sleeve (11) is provided with a rectangular through groove (12) below the inner side rectangular through groove (12), the inner sleeve (11) is provided with a rectangular through groove (13), the inner ring (13) is provided with a through flange (13), the inner teeth of the gasket ring (15) are engaged with the outer teeth of the gasket (16).

3. A hydraulic wrench for a pull stud bolt washer according to claim 2, wherein the upper cylinder of the inner sleeve (2) is provided with a process hole (17) for weight reduction.

4. A hydraulic wrench for a draw stud washer according to claim 2, wherein the lower gear ring (10) is fixedly connected to the outer sleeve (11) by means of set screws (18).

5. A hydraulic wrench for a draw stud washer according to claim 2, wherein the snap ring (14) comprises two identical handled outer ring segments (19) and an intermediate inner ring segment (20) for connection, the outer ring segments (19) being connected to the inner ring segments (20) by pins.

6. The hydraulic wrench for the draw stud washer according to claim 5, wherein a groove (21) for installing a limit wire (23) is formed on the outer side of an inner circular section (20) of the snap ring (14), and two through holes (22) are formed in corresponding positions of the outer sleeve (11).