CN110640665A

CN110640665A - Hydraulic spanner

Info

Publication number: CN110640665A
Application number: CN201810665303.3A
Authority: CN
Inventors: 朱文军; 黄静
Original assignee: Taizhou Yinggewei Pml Precision Mechanism Ltd
Current assignee: Taizhou Yinggewei Pml Precision Mechanism Ltd
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2020-01-03

Abstract

The invention discloses a hydraulic wrench, which comprises an oil cylinder and a claw disc, wherein the claw disc comprises an annular claw disc main body and an arc-shaped claw disc arm, the side wall of the claw disc main body is provided with a pair of sliding square holes, the outer sides of the sliding square holes are respectively provided with a connecting channel and a nut groove, a slidable pawl and a pawl spring are respectively arranged in the sliding square holes, a locking nut is arranged in the nut groove, the center of the claw disc main body is provided with an annular lining ring, the lining ring is provided with a rotatable ratchet wheel, the center of the ratchet wheel is provided with an inner hexagonal hole, and the outer wall of the ratchet wheel is provided with a plurality of ratchets. When the ratchet wheel is used, the inner hexagonal hole of the ratchet wheel is sleeved on the rusted nut, and the top block of the pawl is used for ejecting the ratchet of the ratchet wheel. Then, the oil cylinder is started, the claw disc rotates, meanwhile, the ratchet wheel rotates, the rusted nut is unscrewed, and the effect is obvious.

Description

Hydraulic spanner

Technical Field

The present invention relates to a tool, and more particularly, to a hydraulic wrench.

Background

Many large-scale nuts on the valve are difficult to detach because of corrosion, and great troubles are brought to the disassembly and assembly.

Disclosure of Invention

The invention mainly solves the technical problems in the prior art, and provides a hydraulic wrench.

The technical problem of the invention is mainly solved by the following technical scheme:

a hydraulic wrench is characterized in that the hydraulic wrench comprises an oil cylinder and a claw disc, the claw disc is rotatably arranged at the head of the oil cylinder, the head of a rod body of the oil cylinder is provided with a pair of fixing flanges, the fixing flanges are respectively provided with a connecting round hole, the claw disc comprises an annular claw disc main body and an arc claw disc arm, the tail end of the claw disc arm is provided with an arm hole, a connecting pin respectively penetrates through the connecting round hole and the arm hole, the side wall of the claw disc main body is provided with a pair of sliding square holes, the outer sides of the sliding square holes are respectively provided with a connecting channel and a nut groove, the sliding square holes are respectively provided with a slidable pawl and a pawl spring, the nut groove is internally provided with a locking nut, the center of the claw disc main body is provided with an annular lining ring, and the lining ring is provided with a rotatable ratchet wheel, the center of the ratchet wheel is provided with an inner hexagonal hole, and the outer wall of the ratchet wheel is provided with a plurality of ratchets.

In a preferred embodiment of the present invention, the pawl includes a wedge-shaped top block and a rod-shaped pawl rod, the pawl rod penetrates through the pawl spring, and the lock nut is disposed on the pawl rod.

The hydraulic wrench has the following advantages: when the ratchet wheel is used, the inner hexagonal hole of the ratchet wheel is sleeved on the rusted nut, and the top block of the pawl is used for ejecting the ratchet of the ratchet wheel. Then, the oil cylinder is started, the claw disc rotates, and meanwhile, the ratchet wheel rotates to unscrew the rusted nut. The hydraulic wrench is simple in structure, obvious in effect, low in cost and strong in practicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a hydraulic wrench according to the present invention;

FIG. 2 is an exploded perspective view of the hydraulic wrench of FIG. 1;

FIG. 3 is an enlarged detail view of area A of the hydraulic wrench of FIG. 2;

FIG. 4 is an enlarged detail view of area B of the hydraulic wrench of FIG. 2;

FIG. 5 is a cross-sectional view of the jaw plate of the hydraulic wrench of FIG. 1;

wherein the content of the first and second substances,

1. a hydraulic wrench; 2. an oil cylinder; 21. a rod body; 22. for the fixed flange; 23. the connecting circular hole; 3. a claw disk; 31. a pawl tray body; 311. a liner ring; 312. for the sliding square hole; 313. a connecting channel; 314. a nut groove; 32. a claw disk arm; 33. the tail end is provided with an arm hole; 4. a ratchet wheel; 41. an inner hexagonal hole; 42. a plurality of ratchets are arranged on the outer wall; 5. a connecting pin; 6. a pawl; 61. a claw rod; 62. a top block; 7. a pawl spring; 8. and locking the nut.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.

As shown in fig. 1 to 5, the hydraulic wrench 1 includes a cylinder 2 and a jaw 3, the jaw 3 is rotatably disposed at a head of the cylinder 2, a pair of fixing flanges 22 is disposed at a head of a rod body 21 of the cylinder 2, a connecting circular hole 23 is disposed on each of the fixing flanges 22, the jaw 3 includes an annular jaw main body 31 and an arc-shaped jaw arm 32, an arm hole 33 is disposed at a distal end of the jaw arm 32, a connecting pin 5 penetrates the connecting circular hole 23 and the arm hole 33, a pair of sliding square holes 312 are disposed on a side wall of the jaw main body 31, a connecting passage 313 and a nut groove 314 are disposed at outer sides of the sliding square holes 312, a slidable pawl 6 and a pawl spring 7 are disposed in each sliding square hole 312, a locking nut 8 is disposed in each nut groove 314, an annular bushing ring 311 is disposed at a center of the jaw main body 31, a rotatable ratchet 4 is disposed on the bushing ring 311, the center of the ratchet wheel 4 is provided with an inner hexagonal hole 41, and the outer wall of the ratchet wheel 4 is provided with a plurality of ratchet teeth 42.

The pawl 6 comprises a wedge-shaped top piece 62 and a rod-shaped pawl rod 61, the pawl rod 61 penetrates through the pawl spring 7, and the lock nut 8 is disposed on the pawl rod 61.

When the ratchet wheel is used, the inner hexagonal hole 41 of the ratchet wheel 4 is sleeved on the rusted nut, and at the moment, the top block 62 of the pawl 6 is used for jacking the ratchet teeth 42 of the ratchet wheel 4. Then, the oil cylinder 2 is started, the claw disc 3 rotates, and meanwhile, the ratchet wheel 4 rotates to unscrew the rusted nut.

The hydraulic wrench is simple in structure, obvious in effect, low in cost and strong in practicability.

Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. A hydraulic wrench is characterized in that the hydraulic wrench (1) comprises an oil cylinder (2) and a claw disc (3), the claw disc (3) is rotatably arranged at the head of the oil cylinder (2), the head of a rod body (21) of the oil cylinder (2) is provided with a pair of fixing flanges (22), the fixing flanges (22) are respectively provided with a connecting round hole (23), the claw disc (3) comprises an annular claw disc main body (31) and an arc-shaped claw disc arm (32), the tail end of the claw disc arm (32) is provided with an arm hole (33), a connecting pin (5) respectively penetrates through the connecting round hole (23) and the arm hole (33), the side wall of the claw disc main body (31) is provided with a pair of sliding square holes (312), the outer side of the sliding square holes (312) is respectively provided with a connecting channel (313) and a nut groove (314), the novel ratchet wheel is characterized in that a slidable pawl (6) and a pawl spring (7) are arranged in the sliding square hole (312) respectively, a locking nut (8) is arranged in a nut groove (314), an annular lining ring (311) is arranged at the center of the pawl disc main body (31), a rotatable ratchet wheel (4) is arranged on the lining ring (311), a hexagon socket hole (41) is arranged at the center of the ratchet wheel (4), and a plurality of ratchet teeth (42) are arranged on the outer wall of the ratchet wheel (4).

2. A hydraulic wrench as claimed in claim 1, characterised in that the pawl (6) comprises a wedge-shaped top piece (62) and a rod-shaped claw rod (61), the claw rod (61) extending through the pawl spring (7), the locking nut (8) being arranged on the claw rod (61).