CN210126031U

CN210126031U - Hydraulic wrench

Info

Publication number: CN210126031U
Application number: CN201920575271.8U
Authority: CN
Inventors: 何益明
Original assignee: Shanghai Zhenyou Equipment Engineering Technology Co ltd
Current assignee: Shanghai Zhenyou Equipment Engineering Technology Co ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-03-06
Anticipated expiration: 2029-04-25

Abstract

The utility model relates to the technical field of wrenches, and aims to provide a hydraulic wrench, which has the key points of the technical scheme that the hydraulic wrench comprises a hydraulic wrench main body and a reaction arm, wherein the reaction arm is detachably connected with the hydraulic wrench main body through a connecting piece; the reaction arm of the hydraulic wrench can be detached, and when the reaction arm is damaged under the action of external force, the reaction arm can be replaced, so that convenience is brought to a user.

Description

Hydraulic wrench

Technical Field

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

Background

The hydraulic wrench is a hydraulic torque wrench. It is a specialized bolt tightening tool powered by hydraulic pressure to provide a high torque output for the installation and removal of bolts, often used to tighten and loosen bolts greater than one inch. The hydraulic wrench is composed of a working head, a hydraulic pump and a high-pressure oil pipe. The hydraulic pump transmits power to the working head through the high-pressure oil pipe, and the working head is driven to rotate to tighten or loosen the nut. The hydraulic pump may be driven by electricity or compressed air. The working head of the hydraulic wrench mainly comprises three parts, namely a frame (also called a shell), an oil cylinder and a transmission part. The hydraulic wrench is characterized in that a piston rod of the oil cylinder and a transmission part form a kinematic pair, the distance from the center of the oil cylinder to the center of the transmission part is an amplification force arm of the hydraulic wrench, the force arm is multiplied by the output force of the oil cylinder, and the theoretical output torque of the hydraulic wrench is obtained.

Chinese patent with publication number CN204321964U discloses a hydraulic wrench, which comprises a housing, the top of the housing is provided with a rotary joint connected with a hydraulic pump, one side of the housing is also provided with a reaction arm, and the hydraulic wrench is characterized in that: the hydraulic cylinder is formed by extrusion in the shell, a movable piston is arranged in the hydraulic cylinder, one side of the piston is movably connected with a piston rod, the other end of the piston rod is connected with a pawl, the pawl is connected with a ratchet wheel in a matched mode, and a driving shaft is arranged on one side of the ratchet wheel.

Although this type of hydraulic wrench can be used, since the reaction arm is not detachable, it is difficult to replace the reaction arm when the reaction arm is damaged by an external force, which causes inconvenience to the user.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic wrench, its counter-force arm can be dismantled, when the counter-force arm is damaged under the exogenic action, can change it, brings the convenience for the user.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a hydraulic wrench, includes hydraulic wrench main part and reaction arm, can dismantle through the connecting piece between reaction arm and the hydraulic wrench main part and be connected.

Through adopting above-mentioned technical scheme, when the reaction arm was damaged, dismantle the reaction arm from the hydraulic wrench main part through the connecting piece, change the reaction arm of damage to bring the convenience for the user, avoid influencing hydraulic wrench's use because the damage of reaction arm.

Further setting: the connecting piece includes spliced pole, connecting rod and spring, the spliced pole sets up in the hydraulic pressure spanner main part, be equipped with the connecting hole on the spliced pole lateral wall, be equipped with the mounting hole that matches with the spliced pole on the counter-force arm, be equipped with the through-hole that runs through the counter-force arm on the mounting hole lateral wall, the connecting hole bottom is connected to the one end of spring, and the connecting rod is connected to the other end, when the spring is in natural state, the one end that the connecting rod deviates from the spring is in.

By adopting the technical scheme, when the counter force arm is disassembled, the force is applied to the connecting rod through the through hole, the connecting rod moves towards the direction close to the bottom of the connecting hole, the spring is changed from a natural state to a compressed state, and when the connecting rod is completely positioned in the connecting hole, the connection between the counter force arm and the connecting column is released, so that the counter force arm is disassembled; when the installation reaction arm, to the connecting rod application of force, the connecting rod orientation is close to connecting hole bottom direction and is removed, and the spring becomes compression state by natural state, when the connecting rod is in the connecting hole completely, overlaps the reaction arm on the spliced pole, and when the connecting hole was relative with the through-hole, the pressure that the connecting rod received disappeared, and the spring becomes natural state by compression state, and the connecting rod orientation deviates from connecting hole bottom direction and removes and insert in the through-hole to accomplish the installation of reaction arm.

Further setting: the connecting holes are at least four and are in annular array by using the central line of the connecting column, and the through holes are at least four and are in annular array by using the central line of the mounting hole.

By adopting the technical scheme, when the counter force arm is installed, a worker can select the installation angle of the counter force arm as required, and when the counter force arm is installed, the connecting rod is inserted into the corresponding through hole, so that the installation of the counter force arm is completed.

Further setting: the utility model discloses a spliced pole, including spliced pole, mounting hole, guide bar, mounting hole, be equipped with four guide ways that match with the guide bar on the spliced pole lateral wall at least, the guide bar is the annular array with the central line of mounting hole, guide bar and guide way sliding fit.

Through adopting above-mentioned technical scheme, when overlapping the reaction arm on the spliced pole, the guide way slides along the gib block to the moving direction to the reaction arm leads, has improved the stability of reaction arm in the removal process.

Further setting: the through hole is a threaded through hole, and a bolt is screwed in the threaded through hole.

Through adopting above-mentioned technical scheme, when dismantling the reaction arm, twist the bolt, make the bolt orientation be close to connecting hole bottom direction and remove, the bolt is at the removal in-process with the connecting rod touch and exert pressure to the connecting rod, until pushing back the connecting rod to the connecting hole in to remove the spacing to the reaction arm, accomplish the dismantlement of reaction arm.

Further setting: the connecting piece includes locking post, locking screw and spacing handle, and the locking post of telling sets up in the hydraulic pressure spanner main part, still be equipped with the through hole that matches with the locking post on the reaction arm, be equipped with spacing sand grip on the locking post lateral wall, be equipped with spacing recess on the through hole lateral wall, spacing sand grip and spacing recess sliding fit, the one end that the locking post deviates from the hydraulic pressure spanner main part is equipped with the locking screw hole, locking screw's one end spiro union is in the locking screw hole, and the other end is in the through hole outside and connects spacing handle, the diameter of spacing handle is greater than the internal diameter of through hole.

Through adopting above-mentioned technical scheme, when the installation counter-force arm, insert the locking post with the counter-force arm through the through hole on, and make spacing sand grip be in spacing recess, avoid the counter-force arm to rotate, again with the locking screw spiro union in the locking threaded hole, spacing handle is in the outside and the counter-force arm of contradicting of through hole this moment, thereby accomplish the installation of counter-force arm, when dismantling the counter-force arm, twist spacing handle, with the locking screw follow the downthehole dismantlement of locking threaded hole, remove being connected between locking post and the counter-force arm, the pulling counter-force arm, spacing recess slides along spacing sand grip, when spacing recess and spacing sand grip separation, accomplish the dismantlement of counter-force arm.

Further setting: the limiting handle is provided with a rotating ring which is convenient for rotating the limiting handle.

Through adopting above-mentioned technical scheme, rotatory setting up the rotation of the limit handle of being convenient for of ring, provide the point of application of force for rotating limit handle.

Further setting: one side of the limiting handle close to the counter force arm is provided with a rubber gasket, and the rubber gasket is abutted against the counter force arm.

Through adopting above-mentioned technical scheme, spacing handle and reaction arm direct contact can be avoided in the setting of rubber gasket to avoid producing wearing and tearing because of the friction between spacing handle and the reaction arm.

To sum up, the utility model discloses following beneficial effect has:

1. when the reaction arm is damaged, the reaction arm is detached from the hydraulic wrench main body through the connecting piece, and the damaged reaction arm is replaced, so that convenience is brought to a user, and the influence on the use of the hydraulic wrench caused by the damage of the reaction arm is avoided;

2. when the reaction arm is disassembled, the bolt is screwed to move towards the direction close to the bottom of the connecting hole, and the bolt contacts with the connecting rod and applies pressure to the connecting rod in the moving process until the connecting rod is pushed back into the connecting hole, so that the limitation on the reaction arm is removed, and the disassembly of the reaction arm is completed;

3. the rotation of limiting handle is facilitated by the arrangement of the rotating ring, and a force application point is provided for rotating the limiting handle.

Drawings

Fig. 1 is a schematic structural view for embodying the present invention in embodiment 1;

FIG. 2 is a schematic view showing a structure for embodying the connecting member in embodiment 1;

FIG. 3 is a schematic structural view showing the positional relationship between the limit handle and the reaction arm in embodiment 2;

FIG. 4 is a schematic view showing a structure for embodying the connecting member in embodiment 2;

FIG. 5 is an enlarged view of the portion A for showing the positional relationship between the position-limiting convex strip and the locking post in FIG. 4;

fig. 6 is an enlarged view of a portion B of fig. 4 showing a positional relationship between the stopper groove and the reaction arm.

In the drawings, 1, a hydraulic wrench main body; 2. a reaction arm; 3. a connecting member; 4. connecting columns; 5. a connecting rod; 6. a spring; 7. connecting holes; 8. mounting holes; 9. a through hole; 10. a bolt; 11. a guide strip; 12. a guide groove; 13. a locking post; 14. locking the screw rod; 15. a limiting handle; 16. limiting convex strips; 17. a limiting groove; 18. locking the threaded hole; 19. a rubber gasket; 20. the ring is rotated.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a hydraulic wrench, as shown in fig. 1 and 2, comprises a hydraulic wrench body 1 and a reaction arm 2, wherein the reaction arm 2 is detachably connected with the hydraulic wrench body 1 through a connecting piece 3 so as to replace the reaction arm 2.

As shown in fig. 1 and 2, the connecting member 3 comprises a connecting column 4, a connecting rod 5 and a spring 6, the connecting column 4 is arranged on the hydraulic wrench body 1, eight connecting holes 7 are arranged on the side wall of the connecting column 4, the connecting holes 7 are in an annular array with the center line of the connecting column 4, a mounting hole 8 matched with the connecting column 4 is arranged on the counter force arm 2, the center line of the mounting hole 8 is superposed with the center line of the connecting column 4, eight through holes 9 penetrating through the counter force arm 2 are arranged on the side wall of the mounting hole 8, the through holes 9 are in an annular array with the center line of the mounting hole 8, one end of the spring 6 is connected with the bottom of the connecting hole 7, the other end is connected with the connecting rod 5, when the spring 6 is in a natural state, one end of the connecting rod 5, which is far away from the spring 6, is positioned in the through hole, the connecting rod 5 is moved back into the connecting hole 7 in order to remove the counter arm 2.

As shown in fig. 1 and 2, eight guide strips 11 are arranged on the side wall of the connecting column 4, the guide strips 11 are in an annular array with the center line of the connecting column 4, eight guide grooves 12 matched with the guide strips 11 are arranged on the side wall of the mounting hole 8, the guide grooves 12 are in an annular array with the center line of the mounting hole 8, and the guide strips 11 are in sliding fit with the guide grooves 12 so as to guide the moving direction of the reaction arm 2 when the reaction arm 2 is mounted.

The implementation process comprises the following steps: when dismantling the counter-force arm 2, rotate bolt 10, bolt 10 moves towards being close to 5 directions of connecting rod, bolt 10 is at removal in-process to connecting rod 5 applys pressure, make connecting rod 5 move towards being close to connecting hole 7 bottom direction, spring 6 becomes compression state by natural state, after connecting rod 5 all moved to connecting hole 7, remove the counter-force arm 2 and be connected between the spliced pole 4, the counter-force arm 2 of pulling, guide way 12 slides along gib block 11, when guide way 12 and gib block 11 separate, accomplish the dismantlement of counter-force arm 2.

When the reaction arm 2 is installed, a worker selects the installation angle of the reaction arm 2 according to needs, the reaction arm 2 is inserted into the connecting column 4, the guide groove 12 slides along the guide strip 11 so as to guide the moving direction of the reaction arm 2 and enable the reaction arm 2 to stably move, when the reaction arm 2 moves to the connecting rod 5, force is applied to the connecting rod 5 to enable the connecting rod 5 to move into the connecting hole 7, the spring 6 changes from a natural state to a compressed state, the reaction arm 2 continues to move until the connecting column 4 is located in the installation hole 8, at the moment, the connecting hole 7 is opposite to the through hole 9, pressure borne by the connecting rod 5 disappears, the spring 6 changes from the compressed state to the natural state, the connecting rod 5 moves towards the direction close to the through hole 9 under the elastic force action of the spring 6 and is inserted into the through hole 9, the connecting rod 5 limits the reaction arm 2, and the reaction arm 2 is connected with the hydraulic wrench main body, the installation of the reaction arm 2 is completed.

Example 2: a hydraulic wrench is different from embodiment 1 in that, as shown in FIGS. 3 and 4, a connecting piece 3 includes a locking column 13, a locking screw 14 and a limiting handle 15, the locking column 13 is disposed on a hydraulic wrench body 1, a counterforce arm 2 is further provided with a through hole matching with the locking column 13, a center line of the through hole coincides with a center line of the locking column 13, as shown in FIGS. 4 and 5, a side wall of the locking column 13 is provided with a limiting convex strip 16, the limiting convex strip 16 is in an annular array with the center line of the locking column 13, as shown in FIGS. 4 and 6, a side wall of the through hole is provided with a limiting groove 17, the limiting groove 17 is in an annular array with the center line of the through hole, as shown in FIGS. 4, 5 and 6, the limiting convex strip 16 is in sliding fit with the limiting groove 17, as shown in FIGS. 2 and 3, one end of the locking column 13 away from the hydraulic wrench body 1 is provided with a locking threaded hole 18, the other end is in the through hole outside and connects spacing handle 15, and the diameter of spacing handle 15 is greater than the internal diameter of through hole to couple together hydraulic wrench main part 1 and reaction arm 2, avoid reaction arm 2 to break away from locking post 13, one side that spacing handle 15 is close to reaction arm 2 is equipped with rubber gasket 19, and rubber gasket 19 contradicts reaction arm 2, and one side that spacing handle 15 deviates from rubber gasket 19 is equipped with rotatory ring 20, so that rotate spacing handle 15.

The implementation process comprises the following steps: when dismantling the counter-force arm 2, rotate rotatory ring 20, rotatory ring 20 drives locking screw 14 through spacing handle 15 and rotates, make locking bolt 10 orientation deviate from 18 bottom directions of locking screw hole and remove, break away from with locking screw hole 18 until locking bolt 10, dismantle locking bolt 10, remove spacing to counter-force arm 2, the counter-force arm 2 of pulling, spacing recess 17 slides along spacing sand grip 16, when spacing recess 17 breaks away from spacing sand grip 16, accomplish the dismantlement of counter-force arm 2.

When the installation reaction arm 2, with spacing recess 17 alignment spacing sand grip 16, promote reaction arm 2, insert locking post 13 with reaction arm 2 through the through hole on, spacing sand grip 16 can carry on spacingly with spacing recess 17's cooperation to reaction arm 2, avoid reaction arm 2 to rotate on locking post 13, again with 14 spiro unions of locking screw in locking screw hole 18, and make the short piece of rubber conflict reaction arm 2 to accomplish the installation of reaction arm 2.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a hydraulic wrench, includes hydraulic wrench main part (1) and reaction arm (2), its characterized in that: can dismantle the connection through connecting piece (3) between the reaction arm of force (2) and hydraulic wrench main part (1), connecting piece (3) are including spliced pole (4), connecting rod (5) and spring (6), spliced pole (4) set up on hydraulic wrench main part (1), be equipped with connecting hole (7) on spliced pole (4) lateral wall, be equipped with mounting hole (8) that match with spliced pole (4) on the reaction arm of force (2), be equipped with through-hole (9) that run through reaction arm of force (2) on mounting hole (8) lateral wall, connecting hole (7) bottom is connected to the one end of spring (6), connecting rod (5) is connected to the other end, when spring (6) are in natural state, the one end that connecting rod (5) deviate from spring (6) is in through-hole (9).

2. A hydraulic wrench as claimed in claim 1, wherein: the connecting holes (7) are at least four and are in annular array with the center line of the connecting column (4), and the through holes (9) are at least four and are in annular array with the center line of the mounting hole (8).

3. A hydraulic wrench as claimed in claim 2, wherein: be equipped with four gibs (11) on spliced pole (4) lateral wall at least, gib (11) are the annular array with the central line of spliced pole (4), be equipped with four guide way (12) that match with gib (11) at least on mounting hole (8) lateral wall, guide way (12) are the annular array with the central line of mounting hole (8), gib (11) and guide way (12) sliding fit.

4. A hydraulic wrench as claimed in claim 1, wherein: the through hole (9) is a threaded through hole (9), and a bolt (10) is screwed in the threaded through hole (9).