CN219704914U

CN219704914U - Hydraulic wrench

Info

Publication number: CN219704914U
Application number: CN202320168964.1U
Authority: CN
Inventors: 李俊强
Original assignee: Wuhan Keruichi Intelligent Equipment Co ltd
Current assignee: Wuhan Keruichi Intelligent Equipment Co ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-09-19
Anticipated expiration: 2033-01-19

Abstract

The utility model relates to a hydraulic wrench, which comprises a shell, wherein a through hole penetrating through the shell is formed in the end face of one end of the shell, a positioning cylinder body is rotatably installed in the through hole, an adjustable clamping assembly is arranged on the positioning cylinder body, a ratchet assembly is further arranged on the outer side wall of the positioning sleeve, an electric hydraulic cylinder is arranged at the inner top of the shell, and the output end of the electric hydraulic cylinder is connected to the top of the ratchet assembly; compared with the existing fixing structure, the three-jaw clamping structure can not only avoid the sleeve arranged in the positioning cylinder from falling out, but also be used for disassembling the deformed nut, and has wider application range.

Description

Hydraulic wrench

Technical Field

The utility model relates to the technical field of hydraulic spanner equipment, in particular to a hydraulic spanner.

Background

The hydraulic torque wrench takes hydraulic pressure as power to provide large torque output, is used for a professional bolt tightening tool for installing and detaching bolts, and part of hydraulic torque wrench drives a ratchet mechanism to drive a driving shaft to rotate through a hydraulic cylinder, the driving shaft is connected with the bolts, and the driving shaft drives the bolts to rotate to tighten and loosen the bolts.

However, the end of the driving shaft of the conventional hydraulic torque wrench is generally adapted to a bolt, the use limitation is large, although a part of hydraulic wrench can adjust the internal space, the shape of the hydraulic wrench is fixed into a regular hexagonal hole, and when the nut is corroded, impacted externally or the nut slides to cause deformation of the nut after long-time use, the wrench cannot be used, and the applicability is not high.

Disclosure of Invention

Based on the expression, the utility model provides the hydraulic wrench, which solves the defect that the existing hydraulic wrench can only be applied to regular hexagon bolts or nuts and cannot be fixed and detached frequently for deformed nuts.

The hydraulic wrench comprises a shell, wherein a through hole penetrating through the shell is formed in the end face of one end of the shell, a positioning cylinder body is rotatably installed in the through hole, an adjustable clamping assembly is arranged on the positioning cylinder body, the clamping assembly comprises a rotary table rotatably installed in the positioning cylinder body, and at least three clamping blocks are arranged on the rotary table in a surrounding mode; the positioning cylinder is characterized in that a ratchet wheel assembly is further arranged on the outer side wall of the positioning cylinder body, an electric hydraulic cylinder is arranged at the inner top of the shell, and the output end of the electric hydraulic cylinder is connected to the top of the ratchet wheel assembly.

The utility model is realized by the following technical scheme:

as a preferable technical scheme of the utility model, the end surface of the positioning cylinder body extending to the other surface of the shell is provided with a fixed plate, the fixed plate is provided with a driving motor, and an output shaft of the driving motor is in transmission connection with the turntable.

As a preferable technical scheme of the utility model, at least three strip-shaped grooves are also formed in the inner side wall of the positioning cylinder, one clamping block is correspondingly arranged in one strip-shaped groove, a protruding part is arranged at the bottom of the clamping block, a spiral groove is formed in the surface of the turntable, the protruding part is matched with the spiral groove, and when the turntable rotates, the clamping block moves along with the spiral groove, so that the three clamping blocks are synchronously far away from or near the center of the positioning cylinder.

As a preferable technical scheme of the utility model, one surface of the clamping block facing the center of the through hole is provided with the anti-skid rack, and when the nut or the bolt is fixed, the clamping force of the clamping block can be increased through the anti-skid rack.

As a preferable technical scheme of the utility model, the ratchet wheel assembly comprises a ratchet wheel fixedly arranged on the positioning cylinder body, a connecting piece is arranged at the top of the ratchet wheel and connected with the electric hydraulic cylinder, and a check pawl is further arranged at one side of the ratchet wheel.

As a preferable technical scheme of the utility model, the bottom of the connecting piece is provided with a tooth block and meshed with the ratchet wheel, the center of the top of the connecting piece is vertically provided with a chute, the end part of the output end of the electric hydraulic cylinder is provided with a U-shaped clamping plate, and the U-shaped clamping plate is hinged with the chute through a rivet.

As a preferable technical scheme of the utility model, a fixing groove is formed in the shell, the check pawl is obliquely and fixedly arranged in the fixing groove, and a spring sheet contacted with the check pawl is fixedly arranged in the fixing groove.

Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:

in the utility model, a three-jaw clamping structure is adopted, and in the actual use process, as the clamping block has clamping force to the inside, not only can the sleeve arranged in the positioning cylinder body be prevented from being separated, but also the centering can be automatically carried out, the universality is strong, the nut clamping device can be suitable for various parts, and even if the nut is deformed, the nut clamping device can be directly used, and the stability is strong.

Drawings

Fig. 1 is a schematic view of the structure of the inside of a housing in the present embodiment;

FIG. 2 is a schematic cross-sectional view of the clamping assembly according to the present embodiment;

FIG. 3 is a schematic view of the structure of the positioning cylinder and the clamping block in the present embodiment;

FIG. 4 is a schematic view of the structure of the turntable and the clamping blocks in the present embodiment;

wherein: 1. a housing; 2. positioning a cylinder; 3. a turntable; 4. clamping blocks; 5. a fixing plate; 6. a driving motor; 7. an anti-slip rack; 8. a ratchet wheel; 9. a connecting piece; 10. a check pawl; 11. an electro-hydraulic cylinder; 12. u-shaped clamping plates; 13. and the elastic sheet.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Embodiments of the utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1-4, a hydraulic wrench, comprising:

the shell 1 provides stable installation positions for other components, a through hole penetrating through the shell 1 is formed in the end face of one end of the shell 1, and the positioning cylinder 2 is rotatably installed in the through hole;

the clamping assembly is fixedly arranged in the positioning cylinder body 2 and is mainly used for fixing parts in the positioning cylinder body 2 so as to facilitate the subsequent torque application;

the ratchet wheel 8 component is used for driving the positioning cylinder body 2 to directionally rotate and has a non-return function;

the electric hydraulic cylinder 11 drives the ratchet wheel 8 to deflect in a hydraulic telescopic mode, so that the telescopic force of the hydraulic cylinder is converted into torque applied to a bolt or a nut fixed in the positioning cylinder body 2.

Further, a fixed plate 5 is arranged on the end surface of the positioning cylinder body 2 extending to the other surface of the shell body 1, a driving motor 6 is arranged on the fixed plate 5, and an output shaft of the driving motor 6 is in transmission connection with the turntable 3.

Further, still be equipped with at least three bar groove on the inside wall of location barrel 2, a clamp splice 4 corresponds to set up in a bar inslot, and the bottom of clamp splice 4 is equipped with the bellying, and carousel 3's surface is equipped with the vortex groove, bellying and vortex groove looks adaptation, and when carousel 3 rotated, clamp splice 4 also can remove along with its vortex groove to make the center of three clamp splice 4 keep away from or be close to location barrel 2 in step.

Further, the clamping block 4 is provided with an anti-slip rack 7 on one surface facing the center of the through hole, and when the nut or the bolt is fixed, the clamping force of the clamping block 4 can be increased through the anti-slip rack 7.

Further, the ratchet 8 subassembly includes the ratchet 8 of fixed mounting on the positioning cylinder 2, the top of ratchet 8 is equipped with connecting piece 9 and connects in electric hydraulic cylinder 11, one side of ratchet 8 still is equipped with non return pawl 10, the bottom of connecting piece 9 is equipped with the tooth piece and meshes with ratchet 8, the top center department of connecting piece 9 is vertical to be equipped with the spout, the tip of electric hydraulic cylinder 11 output is equipped with U-shaped splint 12, U-shaped splint 12 passes through the rivet and articulates with the spout, casing 1 inside is equipped with the fixed slot, non return pawl 10 slope fixed mounting is in the fixed slot, and still fixed mounting has shell fragment 13 with non return pawl 10 contact in the fixed slot.

Compared with the existing fixing structure, the three-jaw clamping structure can not only avoid the sleeve arranged in the positioning cylinder body 2 from falling out, but also automatically perform centering, and in the use process, only the nut or the bolt is directly sleeved into the positioning cylinder body to be fixed, so that the nut can be directly used even if deformed, and the use is more convenient.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present utility model.

Claims

1. The hydraulic wrench is characterized by comprising a shell (1), wherein a through hole penetrating through the shell (1) is formed in the end face of one end of the shell (1), a positioning cylinder body (2) is rotatably installed in the through hole, an adjustable clamping assembly is arranged on the positioning cylinder body (2), the clamping assembly comprises a rotary table (3) rotatably installed in the positioning cylinder body (2), and at least three clamping blocks (4) are circumferentially arranged on the rotary table (3); the positioning cylinder is characterized in that a ratchet wheel (8) assembly is further arranged on the outer side wall of the positioning cylinder body (2), an electric hydraulic cylinder (11) is arranged at the inner top of the shell (1), and the output end of the electric hydraulic cylinder (11) is connected to the top of the ratchet wheel (8) assembly.

2. The hydraulic wrench as claimed in claim 1, wherein a fixing plate (5) is provided on an end surface of the positioning cylinder (2) extending to the other surface of the housing (1), a driving motor (6) is provided on the fixing plate (5), and an output shaft of the driving motor (6) is in transmission connection with the turntable (3).

3. The hydraulic wrench as claimed in claim 1, wherein the inner side wall of the positioning cylinder (2) is further provided with at least three grooves, one clamping block (4) is correspondingly arranged in one groove, the bottom of the clamping block (4) is provided with a protruding portion, the surface of the turntable (3) is provided with a spiral groove, and the protruding portion is matched with the spiral groove.

4. A hydraulic wrench as claimed in claim 1, wherein the side of the clamping block (4) facing the centre of the through hole is provided with a non-slip rack (7).

5. A hydraulic wrench as claimed in claim 1, wherein the ratchet wheel (8) assembly comprises a ratchet wheel (8) fixedly mounted on the positioning cylinder (2), the top of the ratchet wheel (8) is provided with a connecting piece (9) and is connected with an electro-hydraulic cylinder (11), and one side of the ratchet wheel (8) is further provided with a non-return pawl (10).

6. The hydraulic wrench as claimed in claim 5, wherein the bottom of the connecting member (9) is provided with a tooth block and is engaged with the ratchet wheel (8), a chute is vertically provided at the center of the top of the connecting member (9), and a U-shaped clamping plate (12) is provided at the end of the output end of the electro-hydraulic cylinder (11), and the U-shaped clamping plate (12) is hinged with the chute by means of a rivet.

7. The hydraulic wrench as claimed in claim 5, wherein a fixing groove is formed in the housing (1), the check pawl (10) is obliquely and fixedly installed in the fixing groove, and a spring plate (13) contacting with the check pawl (10) is fixedly installed in the fixing groove.