CN218254891U

CN218254891U - Hollow open type hydraulic torque wrench

Info

Publication number: CN218254891U
Application number: CN202122377768.9U
Authority: CN
Inventors: 汤昊昊; 何文静
Original assignee: Maanshan Woden Machinery Technology Co ltd
Current assignee: Maanshan Woden Machinery Technology Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2023-01-10
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a cavity open type hydraulic torque wrench, including unit head and working head, unit head one side center is rotated through round pin axle and rotary joint inboard and is connected, and rotary joint upper surface one side is rotated through round pin axle and quick-operation joint lower surface one side and is connected, and wrench shell one side is provided with the through-hole, installs the sleeve in the through-hole, and sleeve outer wall cover has the ratchet, and the sleeve inboard is provided with the stopper respectively, and the stopper inboard is provided with spacing post, and the cover has the spring on the spacing post. This cavity open type hydraulic torque wrench through the translation about the hydraulic stem to drive the pawl and remove in the ratchet upper end, thereby reached bolt pretension or torn open the purpose of pine, improved work efficiency greatly, reduced hand labor power, inwards extrude the stopper through the bolt lateral wall, spacing post passes sleeve and the inboard fixed slot nested connection of ratchet, simple to operate, sound construction, the flexibility is high, application scope is wide, the manufacturing cost that has significantly reduced.

Description

Hollow open type hydraulic torque wrench

Technical Field

The utility model relates to a hydraulic torque wrench technical field specifically is a cavity open type hydraulic torque wrench.

Background

The hydraulic wrench is a bolt fastening tool capable of outputting and setting torque, belongs to a high-pressure hydraulic tool, and is widely applied to equipment maintenance and installation in multiple industrial fields. The hydraulic wrench has two types of driving shafts and a hollow type. There are related patents related to hollow hydraulic wrenches, such as application No.: CN202121515976.4 discloses a hydraulic torque wrench with an elastic retaining structure, wherein a rotation stopping seat is mounted on a wrench body, a spring, a steel ball rotating seat and a steel ball are all disposed in the rotation stopping seat, one end of the spring abuts against the wrench body, the other end abuts against the steel ball rotating seat, an arc rotating surface is disposed on the steel ball rotating seat, the steel ball is disposed on the arc rotating surface and can rotate on the arc rotating surface, and under the elastic force of the spring, one end of the steel ball is disposed outside the rotation stopping seat and extends into one of ratchet grooves on a ratchet.

However, the following problems still exist in the actual working process:

1. because of the limited operation space, the bolt is fastened by manpower to meet the required requirements, and the bolt is loosened by manpower when the bolt is dismounted, so that the fastening torque is uneven, the labor intensity is high, and the efficiency is low.

2. Traditional cavity formula hydraulic wrench adopts the hexagon socket head ratchet usually, need be equipped with the cavity formula hydraulic wrench of different ratchet to different bolts, and the cost is higher, and the installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cavity open type hydraulic torque wrench, according to the needs pretension of difference or tear the bolt lateral wall shape loose open, the sleeve of installation looks adaptation through the bolt lateral wall with the stopper inwards extrude, spacing post passes sleeve and the inboard fixed slot nested connection of ratchet, simple to operate, the sound construction, the flexibility is high, application scope is wide, manufacturing cost has significantly reduced, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a cavity open type hydraulic torque wrench, including unit head and working head, unit head one side center is rotated through round pin axle and rotary joint inboard and is connected, rotary joint upper surface one side is rotated through round pin axle and quick-operation joint lower surface one side and is connected, unit head one side upper end is provided with the fixed axle, spanner casing one side is provided with the draw-in groove corresponding with the fixed axle, unit head one side lower extreme is provided with fixed ear seat, fixed ear seat is connected with the working head buckle, working head one side is provided with corresponding fixed pin, the fixed pin runs through working head and fixed ear seat fixed connection, working head one side lower extreme is provided with spanner casing, spanner casing upper end one side and unit head one side buckle fixed connection, spanner casing lower extreme and unit head lower surface contact, spanner casing one side is provided with the through-hole, install the sleeve in the through-hole, sleeve outer wall cover has the ratchet, the sleeve inboard is provided with the stopper respectively, the stopper inboard is provided with spacing post, the cover has the spring on the spacing post.

Preferably, one side of the wrench shell is provided with a reaction force arm, the reaction force arm is arranged at the lower end of the power head, and the surfaces of the reaction force arms are respectively provided with reaction fulcrums.

Preferably, a movable clamping plate is installed in the working head, a movable clamping shaft is installed at the upper end of the movable clamping plate, and a through hole matched with the ratchet wheel is formed in the lower end of the movable clamping plate.

Preferably, one side of the movable clamping plate is provided with a mounting groove, one side of the inner wall of the mounting groove is provided with an elastic column, the lower end of the elastic column is fixedly connected with the upper surface of the pawl, and the lower surface of the pawl is provided with a tooth socket matched with teeth on the outer wall of the ratchet wheel.

Preferably, one side of the power head is fixedly connected with the power seat through a hydraulic rod, the power seat is fixedly connected with a limiting clamping strip through a bolt, and the inner side of the limiting clamping strip is arranged into an arc shape matched with the inner side of the upper end of the movable clamping plate.

Preferably, one end of the power seat is provided with a clamping groove matched with the movable clamping shaft, and the power seat is fixedly connected with the movable clamping shaft in a clamping manner.

Preferably, the inner side of the sleeve is an inner hexagon, the inner side of the sleeve is provided with a limiting groove matched with the limiting block, and the inner side of the ratchet wheel is provided with a fixing groove consistent with the limiting column.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this cavity open type hydraulic torque wrench through the translation about the hydraulic stem to drive the pawl and remove in the ratchet upper end, so relapse, thereby reached bolt pretension or torn open the purpose of pine, small, the accuracy is high, has improved work efficiency greatly, is fit for the limited operational environment in operation space, has reduced the hand labor power.

2. This cavity open type hydraulic torque wrench pretensions or tears loose bolt lateral wall shape according to the needs pretension of difference, installs the sleeve of looks adaptation, inwards extrudees the stopper through the bolt lateral wall, and spacing post passes sleeve and the inboard fixed slot nested connection of ratchet, simple to operate, and the sound construction, the flexibility is high, and application scope is wide, significantly reduced manufacturing cost.

Drawings

Fig. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a front view of the movable clamping plate of the present invention;

fig. 3 is a front view of the power head of the present invention;

fig. 4 is a front sectional view of the sleeve and ratchet wheel of the present invention.

In the figure: 1. a power head; 11. a rotary joint; 12. a quick coupling; 13. a fixed shaft; 14. fixing the ear seat; 15. a fixing pin; 16. a hydraulic lever; 17. a power base; 18. limiting clamping strips; 2. a working head; 21. a wrench housing; 22. a sleeve; 23. a reaction fulcrum; 24. a movable clamping plate; 25. a movable shaft; 26. a ratchet wheel; 27. an elastic column; 28. a pawl; 3. a limiting block; 31. a limiting column; 32. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a hollow open hydraulic torque wrench comprises a power head 1 and a working head 2, wherein the center of one side of the power head 1 is rotatably connected with the inner side of a rotary joint 11 through a pin shaft, one side of the upper surface of the rotary joint 11 is rotatably connected with one side of the lower surface of a quick joint 12 through a pin shaft, the upper end of one side of the power head 1 is provided with a fixed shaft 13, one side of a wrench housing 21 is provided with a clamping groove corresponding to the fixed shaft 13, the lower end of one side of the power head 1 is provided with a fixed lug 14, the fixed lug 14 is connected with the working head 2 in a buckling manner, one side of the working head 2 is provided with a corresponding fixed pin 15, the fixed pin 15 penetrates through the working head 2 and is fixedly connected with the fixed lug 14, one side of the power head 1 is fixedly connected with a power seat 17 through a hydraulic rod 16, the power seat 17 is fixedly connected with a limit clamping strip 18 through a bolt, the inner side of the limit clamping strip 18 is provided with an arc shape matched with the inner side of the upper end of a movable clamping plate 24, one end of a power seat 17 is provided with a clamping groove matched with a movable clamping shaft 25, the power seat 17 is fixedly connected with a movable clamping plate 24 in a buckling way, the lower end of one side of a working head 2 is provided with a wrench shell 21, one side of the upper end of the wrench shell 21 is fixedly connected with one side of the working head 1 in a buckling way, one side of the wrench shell 21 is provided with a reaction force arm which is arranged at the lower end of the working head 1, the surface of the reaction force arm is respectively provided with a reaction fulcrum 23, the lower end of the wrench shell 21 is contacted with the lower surface of the working head 1, one side of the wrench shell 21 is provided with a through hole, a sleeve 22 is arranged in the through hole, the outer wall of the sleeve 22 is sleeved with a ratchet 26, the working head 2 is internally provided with the movable clamping plate 24, the upper end of the movable clamping shaft 25 is arranged at the upper end of the movable clamping plate 24, the through hole matched with the ratchet 26 is arranged at the lower end of the movable clamping plate 24, one side of the movable clamping plate 24 is provided with a mounting groove, an elastic column 27 is arranged on one side of the inner wall of the mounting groove, the lower end of the elastic column 27 is fixedly connected with the upper surface of a pawl 28, a tooth socket matched with teeth on the outer wall of a ratchet 26 is arranged on the lower surface of the pawl 28, a hydraulic pump enters one side of a hydraulic rod 16 through a rotary joint 11 to drive the hydraulic rod 16 to push a power seat 17 to horizontally displace rightwards, so that a movable clamping plate 24 is driven to move in a working head 2, the movable clamping plate 24 rotates to drive the pawl 28 to move rightwards on the upper end of the ratchet 26, the pawl 28 is meshed with the ratchet 26, and the pawl 28 is driven to move leftwards on the upper end of the ratchet 26 through the horizontal displacement leftwards of the hydraulic rod 16, and the steps are repeated, so that the aim of pre-tightening or loosening of bolts is fulfilled, the size is small, the accuracy is high, and the working efficiency is greatly improved, be fit for the limited operational environment in operation space, the hand labor power has been reduced, sleeve 22 inboard is provided with stopper 3 respectively, 3 inboard spacing posts 31 that are provided with of stopper, the cover has spring 32 on the spacing post 31, sleeve 22 inboard sets up to interior hexagon, sleeve 22 inboard is provided with the spacing groove with 3 looks adaptations of stopper, ratchet 26 inboard is provided with the fixed slot unanimous with spacing post 31, bolt lateral wall shape according to the needs pretension of difference or the pine of tearing open, the sleeve 22 of installation looks adaptation, through bolt lateral wall with stopper 3 inside extrusion, spacing post 31 passes sleeve 22 and the inboard fixed slot nested connection of ratchet 26, high durability and convenient installation, firm in structure, the flexibility is high, wide application scope, greatly reduced manufacturing cost.

In conclusion, according to the hollow open type hydraulic torque wrench, a hydraulic pump enters one side of a hydraulic rod 16 through a rotary joint 11 to drive the hydraulic rod 16 to push a power seat 17 to move horizontally rightwards, so as to drive a movable clamping plate 24 to move in a working head 2, the movable clamping plate 24 rotates to drive a pawl 28 to move rightwards at the upper end of a ratchet 26, the pawl 28 is meshed with the ratchet 26, and the hydraulic rod 16 moves horizontally leftwards so as to drive the pawl 28 to move leftwards at the upper end of the ratchet 26.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cavity open type hydraulic torque spanner, includes unit head (1) and working head (2), its characterized in that: the power head is characterized in that the center of one side of the power head (1) is rotatably connected with the inner side of a rotary joint (11) through a pin shaft, one side of the upper surface of the rotary joint (11) is rotatably connected with one side of the lower surface of a quick joint (12) through a pin shaft, a fixing shaft (13) is arranged at the upper end of one side of the power head (1), a clamping groove corresponding to the fixing shaft (13) is formed in one side of a wrench shell (21), a fixing lug seat (14) is arranged at the lower end of one side of the power head (1), the fixing lug seat (14) is connected with a working head (2) in a buckling mode, a corresponding fixing pin (15) is arranged at one side of the working head (2), the fixing pin (15) penetrates through the working head (2) and is fixedly connected with the fixing lug seat (14), a wrench shell (21) is arranged at the lower end of one side of the working head (2), one side of the wrench shell (21) is fixedly connected with a buckle at one side of the power head (1), the lower end of the wrench shell (21) is in contact with the lower surface of the power head (1), a through hole, a sleeve (22) is installed in the through hole, a ratchet wheel (26) is sleeved on the outer wall of the sleeve (22), a limiting column (31) is respectively arranged on the inner side of the limiting block (3), and a limiting column (31) is sleeved on the inner side of the limiting column (3), and a limiting column (31) is sleeved on the limiting column (31) respectively arranged on the inner side of the limiting column (3).

2. A hollow open hydraulic torque wrench as claimed in claim 1, wherein: one side of the wrench shell (21) is provided with a reaction force arm which is arranged at the lower end of the power head (1), and the surfaces of the reaction force arms are respectively provided with a reaction fulcrum (23).

3. A hollow open hydraulic torque wrench as claimed in claim 1, wherein: a movable clamping plate (24) is installed in the working head (2), a movable clamping shaft (25) is installed at the upper end of the movable clamping plate (24), and a through hole matched with the ratchet wheel (26) is formed in the lower end of the movable clamping plate (24).

4. A hollow open hydraulic torque wrench as claimed in claim 3, wherein: one side of the movable clamping plate (24) is provided with a mounting groove, one side of the inner wall of the mounting groove is provided with an elastic column (27), the lower end of the elastic column (27) is fixedly connected with the upper surface of the pawl (28), and the lower surface of the pawl (28) is provided with a tooth socket matched with teeth on the outer wall of the ratchet wheel (26).

5. A hollow open hydraulic torque wrench as claimed in claim 4, wherein: one side of the power head (1) is fixedly connected with a power seat (17) through a hydraulic rod (16), the power seat (17) is fixedly connected with a limiting clamping strip (18) through a bolt, and the inner side of the limiting clamping strip (18) is arranged to be arc-shaped and matched with the inner side of the upper end of a movable clamping plate (24).

6. A hollow open hydraulic torque wrench as claimed in claim 5, wherein: one end of the power seat (17) is provided with a clamping groove matched with the movable clamping shaft (25), and the power seat (17) is fixedly connected with the movable clamping plate (24) in a clamping and buckling mode.

7. A hollow open hydraulic torque wrench as claimed in claim 1, wherein: the inner side of the sleeve (22) is arranged to be an inner hexagon, the inner side of the sleeve (22) is provided with a limiting groove matched with the limiting block (3), and the inner side of the ratchet wheel (26) is provided with a fixing groove consistent with the limiting column (31).