CN204524740U - Single-stage short bolt tensioning jack - Google Patents

Single-stage short bolt tensioning jack Download PDF

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Publication number
CN204524740U
CN204524740U CN201420777934.1U CN201420777934U CN204524740U CN 204524740 U CN204524740 U CN 204524740U CN 201420777934 U CN201420777934 U CN 201420777934U CN 204524740 U CN204524740 U CN 204524740U
Authority
CN
China
Prior art keywords
cylinder body
support set
pull bar
cavity
pulling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420777934.1U
Other languages
Chinese (zh)
Inventor
赵耀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MA'ANSHAN YIHUA HYDRAULIC MACHINES Co Ltd
Original Assignee
MA'ANSHAN YIHUA HYDRAULIC MACHINES Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MA'ANSHAN YIHUA HYDRAULIC MACHINES Co Ltd filed Critical MA'ANSHAN YIHUA HYDRAULIC MACHINES Co Ltd
Priority to CN201420777934.1U priority Critical patent/CN204524740U/en
Application granted granted Critical
Publication of CN204524740U publication Critical patent/CN204524740U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of single-stage short bolt tensioning jack, comprise support set, pulling sleeve is rotatablely equipped with in support set, pulling sleeve is provided with corresponding pulling hole, the side of support set is provided with breach use driving lever and inserts in the pulling hole on pulling sleeve, the upper end of support set is installed with the cylinder body of annular and is provided with cavity, cylinder body central authorities are inserted with pull bar, pull bar central authorities are provided with bores a hole and is provided with screw thread, pull bar global sections is T-shaped and is installed with piston and coordinates to be installed in the cavity of cylinder body, the outer wall of cylinder body is provided with snap joint and by its built-in pipeline communication in cavity.The utility model pull bar is installed separately, is equipped with different pull bars and pulling sleeve, for the tools for bolts ' pretension of different size, can realize the tools for bolts ' pretension of many specifications; Piston pattern saves material, less expense; Simple to operate, easy to maintenance; Operating pressure is high, small volume, and applying working condition scope is wide.

Description

Single-stage short bolt tensioning jack
Technical field:
The utility model relates to stretcher field, particularly a kind of single-stage short bolt tensioning jack.
Background technology:
Bolt hydraulic stretcher is called for short bolt tensioning jack, the hydraulic power source that it provides by fluid power booster (superpressure oil pump), tensile force is determined according to the tensile strength of material, yield factor and percentage elongation, utilize the expansion force that superpressure oil pump produces, the bolt of the power that is applied in is elongated in its elastic deformation area, diameter of bolt slight deformation, thus makes nut be easy to loosening, also can apply the device of axial force in addition as hydraulic pressure excessively full connection, carry out top pressure and install.The maximum advantage of stretcher can make and the dismounting fastening by definite value simultaneously of multiple bolt, and cloth power is even, be a safety, efficiently, efficiently instrument be fastening and the optimal path of the bolt of dismounting all size.Be applied to the fields such as petrochemical industry, nuclear power, wind-powered electricity generation, water power, thermoelectricity, boats and ships, railway, Aero-Space, mining, heavy-duty machinery.According to different operating mode application conditions and user's requirement, the design of special stretcher can be done.
Utility model content:
The purpose of this utility model solves the deficiencies in the prior art, provides the single-stage short bolt tensioning jack that a kind of structural design is more reasonable, ingenious, easy to use.
The technical solution adopted in the utility model is:
Single-stage short bolt tensioning jack, comprise support set, it is characterized in that: in described support set, be rotatablely equipped with pulling sleeve, pulling sleeve is provided with corresponding pulling hole, the side of support set is provided with breach use driving lever and inserts in the pulling hole on pulling sleeve, the upper end of support set is installed with the cylinder body of annular and is provided with cavity, cylinder body central authorities are inserted with pull bar, pull bar central authorities are provided with bores a hole and is provided with screw thread, described pull bar global sections is T-shaped and is installed with piston and coordinates to be installed in the cavity of cylinder body, the outer wall of cylinder body is provided with snap joint and by its built-in pipeline communication in cavity.
Described single-stage short bolt tensioning jack, is characterized in that: described piston is slidably fitted with in the cavity in cylinder body, and the two sides of piston are provided with annular seal groove.
Compared with prior art, the beneficial effects of the utility model are:
The utility model pull bar is installed separately, same stretcher can be equipped with different pull bars and pulling sleeve, for the tools for bolts ' pretension of different size, operating personnel are having the tools for bolts ' pretension of plurality of specifications on-the-spot, only need carry pull bar and the pulling sleeve of a stretcher and dimension, just can realize the tools for bolts ' pretension of many specifications; Piston pattern saves material, less expense; Simple to operate, easy to maintenance; Operating pressure is high, small volume, and applying working condition scope is wide; Adopt high strength alloy steel 42CrMo, improve security and the life-span of product; Can according to customer requirement amount body making etc.
Accompanying drawing illustrates:
Fig. 1 is the utility model structural representation.
Detailed description of the invention:
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail:
Single-stage short bolt tensioning jack, comprise support set 5, pulling sleeve 6 is rotatablely equipped with in support set 5, pulling sleeve 6 is provided with corresponding pulling hole, the side of support set 5 is provided with breach and uses driving lever 7 to insert in the pulling hole on pulling sleeve 6, the upper end of support set 5 is installed with the cylinder body 3 of annular and is provided with cavity, cylinder body 3 central authorities are inserted with pull bar 1, pull bar 1 central authorities are provided with bores a hole and is provided with screw thread, pull bar 1 global sections is T-shaped and is installed with piston 2 and coordinates to be installed in the cavity of cylinder body 3, the outer wall of cylinder body 3 is provided with snap joint 4 and by its built-in pipeline communication in cavity, piston 2 is slidably fitted with in the cavity in cylinder body, the two sides of piston are provided with annular seal groove.
Above-described embodiment is only preferably embodiment of the present utility model, and in addition, the utility model can also have other implementations.It should be noted that, under the prerequisite not departing from the utility model design, any apparent improvement and modification all should fall within protection domain of the present utility model.

Claims (2)

1. single-stage short bolt tensioning jack, comprise support set, it is characterized in that: in described support set, be rotatablely equipped with pulling sleeve, pulling sleeve is provided with corresponding pulling hole, the side of support set is provided with breach use driving lever and inserts in the pulling hole on pulling sleeve, the upper end of support set is installed with the cylinder body of annular and is provided with cavity, cylinder body central authorities are inserted with pull bar, pull bar central authorities are provided with bores a hole and is provided with screw thread, described pull bar global sections is T-shaped and is installed with piston and coordinates to be installed in the cavity of cylinder body, the outer wall of cylinder body is provided with snap joint and by its built-in pipeline communication in cavity.
2. single-stage short bolt tensioning jack according to claim 1, is characterized in that: described piston is slidably fitted with in the cavity in cylinder body, and the two sides of piston are provided with annular seal groove.
CN201420777934.1U 2014-12-10 2014-12-10 Single-stage short bolt tensioning jack Expired - Fee Related CN204524740U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420777934.1U CN204524740U (en) 2014-12-10 2014-12-10 Single-stage short bolt tensioning jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420777934.1U CN204524740U (en) 2014-12-10 2014-12-10 Single-stage short bolt tensioning jack

Publications (1)

Publication Number Publication Date
CN204524740U true CN204524740U (en) 2015-08-05

Family

ID=53738792

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420777934.1U Expired - Fee Related CN204524740U (en) 2014-12-10 2014-12-10 Single-stage short bolt tensioning jack

Country Status (1)

Country Link
CN (1) CN204524740U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104551633A (en) * 2014-12-10 2015-04-29 马鞍山市益华液压机具有限公司 Single-stage short-type bolt tensioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104551633A (en) * 2014-12-10 2015-04-29 马鞍山市益华液压机具有限公司 Single-stage short-type bolt tensioner

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150805

Termination date: 20151210

EXPY Termination of patent right or utility model