CN216370975U

CN216370975U - Hydraulic stretcher capable of displaying stretching force

Info

Publication number: CN216370975U
Application number: CN202122612945.7U
Authority: CN
Inventors: 周佳成; 周婧麟; 李瑞清
Original assignee: Shanghai Primo Tools Co ltd
Current assignee: Shanghai Primo Tools Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-26
Anticipated expiration: 2031-10-28
Also published as: WO2023071334A1

Abstract

The utility model discloses a hydraulic stretcher for displaying stretching force, which comprises a base and a support ring fixedly connected with the base, wherein a bolt is fixed on the base, a nut on the bolt is fixed through a toggle ring on the base, a locking mechanism for fixing the bolt, a pushing mechanism for pushing the locking mechanism to displace and stretch the bolt to deform and a display assembly for outputting the pushing force applied by the pushing mechanism are arranged above the support ring, and the hydraulic stretcher can intuitively read the tension applied to the bolt through a display, so that the stretching condition of the bolt is judged, the condition that the nut cannot be screwed at an expected position due to the fact that the bolt is stretched excessively is avoided, the stretching efficiency of the bolt is promoted, the probability of excessive stretching of the bolt is reduced, and the nut can be screwed well guaranteed.

Description

Hydraulic stretcher capable of displaying stretching force

Technical Field

The utility model relates to the technical field of hydraulic stretchers, in particular to a hydraulic stretcher capable of displaying stretching force.

Background art:

the bolt stretcher is a hydraulic source provided by a hydraulic booster pump, the stretching force is determined according to the tensile strength, the yield coefficient and the elongation of a material, the stretching force generated by an ultrahigh pressure oil pump is utilized, a bolt with applied force is stretched in an elastic deformation area, the diameter of the bolt slightly deforms, so that a nut is easy to loosen or tighten, no torsional shear force and lateral force exist, no friction damage is caused to a connected contact surface, and the bolt stretcher is widely applied to the fields of petrochemical industry, nuclear power, wind power, hydropower, thermal power, ships, railways, aerospace, mining, heavy machinery and the like.

However, when the existing bolt stretcher is used, the output magnitude of the force applied by the stretcher is not displayed, and a worker can hardly judge whether the bolt is stretched in place or is excessive according to the acting force of the stretcher, so that the stretching bolt effect cannot be expected, the repeated stretching condition occurs, and the overall working efficiency of bolt stretching is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic stretcher capable of displaying stretching force, which aims to overcome the defect that the specific output force of the stretcher cannot be judged in the prior art.

The utility model provides a show tensile force's hydraulic stretching ware, including the base and with base fixed connection's support ring, be fixed with the bolt on the base and fix through stirring the ring on the base nut on the bolt, the support ring top is including fixing the locking mechanism of bolt, promotion locking mechanism displacement and tensile pushing mechanism and the output that the bolt warp the display module of thrust size that pushing mechanism applyed.

Furthermore, the locking mechanism comprises a fixed block fixedly connected with the support ring, a moving block movably connected with the fixed block, and a pushing block slidably connected with the moving block.

Furthermore, the moving block is connected with a limiting sliding groove arranged on the fixed block in a sliding mode.

Furthermore, the pushing block is connected with a sliding rod arranged on the moving block in a sliding mode.

Furthermore, the pushing mechanism comprises a pushing plug in sliding connection with an oil cavity formed in the fixed block and an oil delivery pipe communicated with the oil cavity, and the tail end of the pushing plug is in contact connection with a moving end arranged on the moving block.

Furthermore, the fixed block is an inclined plane on one side facing the bolt, and the pushing block moves upwards along the inclined plane on the fixed block under the pushing of the moving block and clamps and stretches the bolt.

Furthermore, the display assembly comprises a pressure sensor arranged inside the movable end head and a display electrically connected with the sensor.

The utility model has the advantages that: according to the hydraulic stretcher capable of displaying the stretching force, the pushing plug is arranged to push the moving block to move according to the oil amount in the oil cavity, so that the pushing block is guaranteed to clamp and stretch the bolt, meanwhile, the pressure sensor is arranged in the moving end, the display connected with the pressure sensor is arranged on the side face of the fixed block, the size of the specific pulling force output by the pushing plug is obtained, the size of the pulling force applied to the bolt is further judged, and the stretching condition of the bolt is judged at one time;

this hydraulic stretching ware can read out the pulling force size that the bolt received through the display is audio-visual to judge the tensile condition of bolt, avoided the bolt to be stretched the excessive condition that leads to the nut to screw in the anticipated position, promoted the tensile efficiency of bolt, reduced the tensile excessive probability of bolt, thereby better assurance the nut can screw.

Drawings

FIG. 1 is a schematic view of a partial cross-sectional structure of the present invention.

Fig. 2 is a schematic structural view of a fixing block according to the present invention.

Fig. 3 is a schematic view of a connection structure of a moving block and a pushing block in the utility model.

Wherein: 1-support ring, 2-moving block, 3-pushing block, 4-display, 5-fixed block, 6-pressure sensor, 7-bolt, 8-moving end, 9-oil pipeline, 10-limiting chute, 11-nut, 12-stirring ring, 13-sliding rod, 14-base, 15-oil cavity and 16-pushing plug.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 3, a hydraulic tensioner for displaying a tensile force comprises a base 14 and a support ring 1 fixedly connected with the base 14, a bolt 7 is fixed on the base 14 and a nut 11 on the bolt 7 is fixed through a toggle ring 12 on the base 14, a fixed block 5 is fixedly connected with the support ring 1, a limit chute 10 and an oil cavity 15 are respectively arranged inside the fixed block 5, a zigzag moving block 2 is slidably connected with the limit chute 10, a push plug 16 is slidably arranged inside the oil cavity 15, the push plug 16 is pushed to move up and down along the oil cavity 15 by delivering hydraulic oil to an oil delivery pipe 9 connected with the oil cavity 15, the tail end of the oil delivery pipe 9 is connected with a hydraulic device, the top of the push plug 16 is in contact connection with a moving end 8 of the moving block 2, and the whole moving block 2 is pushed to move up by pushing the moving end 8 after the push plug 16 moves;

the bottom end of the moving block 2 is provided with a sliding rod 13, the sliding rod 13 is provided with a pushing block 3 in a sliding manner, the inward side of the fixed block 5, namely one side facing the bolt 7, is provided with an outward inclined surface, the pushing block 3 is also provided with an inclined surface matched with the inclined surface of the fixed block on one side facing the fixed block 5, when the moving block 2 is pushed by a pushing plug 16 to move upwards, the moving block 2 pulls the pushing block 3 to move upwards, moves upwards along the inclined surface on the fixed block 5 and clamps the bolt 7 inwards, the bolt 7 is stretched while being clamped in a continuous moving process, so that the bolt is stretched, and the nut 11 can be further fixed by rotating the stirring ring 12 after stretching;

remove end 8 inside and inlayed pressure sensor 6 to be equipped with the display 4 of being connected with pressure sensor 6 in the side of fixed block 5, when pushing away stopper 16 and exerting pressure to removing end 8, pressure sensor 6 can show on transmitting the concrete data of pressure to display 4, thereby make things convenient for the staff to learn the tensile size that bolt 7 received this moment, thereby judge whether bolt 7 reaches the tensile length that the expectation wanted according to the tensile size, avoid the tensile excessive or unreachable condition of bolt 7.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. The utility model provides a show tensile force's hydraulic stretching ware, including base (14) and with base (14) fixed connection's support ring (1), be fixed with bolt (7) on base (14) and fixed through stirring ring (12) on base (14) nut (11) on bolt (7), its characterized in that, support ring (1) top is including fixing the locking mechanism of bolt (7), promotion locking mechanism displacement and tensile pushing mechanism and the output that bolt (7) warp the display module of the thrust size that pushing mechanism applyed.

2. A hydraulic tensioner as claimed in claim 1, characterized in that: the locking mechanism comprises a fixed block (5) fixedly connected with the support ring (1), a moving block (2) movably connected with the fixed block (5) and a pushing block (3) in sliding connection with the moving block (2).

3. A hydraulic tensioner as claimed in claim 2, which exhibits a tensile force, wherein: the moving block (2) is connected with a limiting sliding groove (10) arranged on the fixed block (5) in a sliding mode.

4. A hydraulic tensioner as claimed in claim 3, characterized in that: the pushing block (3) is connected with a sliding rod (13) arranged on the moving block (2) in a sliding manner.

5. The hydraulic tensioner as claimed in claim 4, wherein: the pushing mechanism comprises a pushing plug (16) and an oil conveying pipe (9), wherein the pushing plug (16) is in sliding connection with an oil cavity (15) formed in the fixing block (5), the oil conveying pipe (9) is communicated with the oil cavity (15), and the tail end of the pushing plug (16) is in contact connection with a moving end (8) arranged on the moving block (2).

6. The hydraulic tensioner as claimed in claim 5, wherein: the fixed block (5) is an inclined plane on one side facing the bolt (7), and the pushing block (3) moves upwards along the inclined plane on the fixed block (5) under the pushing of the moving block (2) and clamps and stretches the bolt (7).

7. The hydraulic tensioner as claimed in claim 6, wherein: the display assembly comprises a pressure sensor (6) arranged inside the movable end head (8) and a display (4) electrically connected with the sensor (6).