EP0706695A1 - Lastwechselzähler - Google Patents
LastwechselzählerInfo
- Publication number
- EP0706695A1 EP0706695A1 EP94925384A EP94925384A EP0706695A1 EP 0706695 A1 EP0706695 A1 EP 0706695A1 EP 94925384 A EP94925384 A EP 94925384A EP 94925384 A EP94925384 A EP 94925384A EP 0706695 A1 EP0706695 A1 EP 0706695A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- counter
- piston
- load change
- cylinder
- housing
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/12—Design features of general application for actuating the drive by fluid means
- G06M1/126—Design features of general application for actuating the drive by fluid means by hydraulic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B29/00—Accessories
- B25B29/02—Bolt tensioners
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/04—Design features of general application for driving the stage of lowest order
- G06M1/041—Design features of general application for driving the stage of lowest order for drum-type indicating means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/083—Design features of general application for actuating the drive by mechanical means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/12—Design features of general application for actuating the drive by fluid means
- G06M1/123—Design features of general application for actuating the drive by fluid means by pneumatic means
Definitions
- Screw tensioning cylinder put under hydraulic pressure. As a result, the screw bolt. is stretched by lengths. The forces exerted on the bolts are extremely high, which places high demands on the bolt tensioning cylinder and its individual parts. In order to prevent these highly stressed individual parts from breaking when a bolt is tightened because a fatigue fracture occurs because the number of load cycles that can be absorbed by this part is exceeded, the aim is to replace the parts at risk of fatigue fracture before such a fatigue fracture can occur. This also applies to the complete replacement of other wear parts, such as. B. the seals.
- the periodic pressurization of the actuating device which is to be monitored, is used to move a piston which is arranged in a sealed manner in the cylinder each time.
- the axial piston movement causes a switching of the counter, so that any pressurization of the actuator, for. B. every time a bolt is tightened by means of a screw tensioning cylinder, the counter is switched on.
- the piston can have a V-groove on its end face facing the counter and the counter can have a corresponding driver wedge rotated with respect to the V-groove, whereby the driver wedge is rotated by one counting unit of the counter by each axial movement of the piston.
- the load change counter has a solid, one-piece housing.
- the piston can be made in two parts, one part of which is sealed in a bore in a housing and rests with a collar on a surface of a housing recess, while the other part has the V-groove, coaxially Guided against rotation in the housing and arranged coaxially to the counter arranged in a further housing recess and readable via a side viewing window.
- a spring element can be arranged between the collar and a housing surface of the recess, which returns the piston to its original position when pressure relief occurs.
- the spring element can be dimensioned with respect to the piston surface in such a way that the counter is actuated at a specific predeterminable pressure.
- the housing recess, through which the second part of the piston is guided, can have a lateral opening for inserting the compression spring and parallel end faces for engaging the piston collar and the compression spring. Furthermore, the housing recess for the counter can have an end opening and a coaxial bore for inserting the second part of the piston and the counter, and the second part of the piston can be secured against rotation by a screw or pin which engages radially in a longitudinal groove.
- Fig. 2 shows a partial longitudinal section through the
- Fig. 3 is a partial view of the load change counter
- a recess 4 is machined into the side of the housing 1 and has parallel end faces 5, 6 which are perpendicular to the axis of the longitudinal bore 2.
- the longitudinal bore 2 continues in a coaxial bore 7 which merges into an enlarged axial bore, which represents a recess 8 for a counter 18 inserted therein.
- the recess is provided with a side viewing window 9 for reading the counter 18.
- a first piston part 10 is guided in a sealed manner by means of a seal 11; in the rest position shown in FIG. 1, a collar 12 rests on the first piston part 10 on the end face 5.
- a second piston part 13, which is screwed to the first piston part 10, coaxially crosses the first piston part 10 through the Recess 4 and is guided through the bore 7.
- This second piston part 13 is encompassed by a compression spring 14 which is supported on the one hand on the collar 12 and on the other hand on the end face 6 of the recess 4. This compression spring 14 serves to guide the piston parts 10 and 13 into the position shown in FIG. 1 when the bore 2 is relieved of pressure.
- the piston part 13 is guided in the housing 1 against rotation.
- the piston part 13 has a longitudinal groove 15, in which a screw 16 engages radially.
- a V-groove 17 is arranged on the end face of the piston part 13.
- the counter 18 coaxially has a driver wedge 19 corresponding to the V-groove 17, which cooperates with the V-groove 17.
- the counter 18 is screwed to the housing 1 by means of a flange 20.
- a guide pin 21 on the driver wedge 19 engages in a bore in the piston part 13 and serves to guide the driver wedge 19.
- the driving wedge 19 is rotated relative to the V-groove 17 by about 36 ", preferably a little more than 36 °, due to the manufacturing tolerances, in order to ensure that the counter disk of the counter can be advanced by one counting unit.
- the bore 2 is pressurized via the transverse bore 3
- the piston part 1 moves with the piston part 13 into the position shown in Fig. 2.
- This causes the driving wedge 19 to be rotated by approximately 36 ° and thus to advance the
- the driver wedge 19 is turned back into the position shown in FIG. 1 by a spring in the counter 18, the one disk and the remaining disks of the counter remain in their position there the driver wedge 19 with the counter via a resilient Jack ratchet is coupled.
- the next counting process can thus be carried out again by pressurizing the bore 2.
- the piston part 10 with its seal 11 is first inserted into the bore 2. This hole is accessible via the recess 4 from the side. Then the compression spring 14 is also inserted into the recess 4 from the side.
- This compression spring can optionally be surrounded by a protective jacket and can be designed as a cylindrical coil spring or as a plate spring assembly or as a rubber block.
- the second piston part 13 is inserted from the front side of the housing 1 through the recess 8 into the bore 7 and screwed to the first piston part 10.
- the piston part 13 is secured against rotation by screwing in the screw 16 which engages in the groove 15.
- the counter 18 is likewise inserted into the recess 8 from the end face of the housing 1 and screwed to the housing 1 by means of a flange 20 arranged on the counter 18.
- the load change counter only needs to be connected via the transverse bore 3 to the pressurized actuating device, in particular a hydraulic screw tensioning cylinder, in order to be ready for operation.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Measurement Of Force In General (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Fluid-Pressure Circuits (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4324888 | 1993-07-26 | ||
DE4324888A DE4324888C3 (de) | 1993-07-26 | 1993-07-26 | Lastwechselzähler |
PCT/EP1994/002444 WO1995003592A1 (de) | 1993-07-26 | 1994-07-23 | Lastwechselzähler |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0706695A1 true EP0706695A1 (de) | 1996-04-17 |
EP0706695B1 EP0706695B1 (de) | 1996-10-30 |
Family
ID=6493624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94925384A Revoked EP0706695B1 (de) | 1993-07-26 | 1994-07-23 | Lastwechselzähler |
Country Status (6)
Country | Link |
---|---|
US (1) | US5682025A (de) |
EP (1) | EP0706695B1 (de) |
JP (1) | JPH09500991A (de) |
AT (1) | ATE144849T1 (de) |
DE (2) | DE4324888C3 (de) |
WO (1) | WO1995003592A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4324888C3 (de) * | 1993-07-26 | 2000-07-27 | Frank Hohmann | Lastwechselzähler |
DE19638901C2 (de) * | 1996-09-23 | 2000-05-25 | Joerg Hohmann | Hydraulische Gewindebolzenspannvorrichtung |
DE10216416B4 (de) * | 2002-04-12 | 2004-02-26 | Condor Werke Gebr. Frede Gmbh & Co Kg | Druckschalter |
DE20311811U1 (de) * | 2003-07-31 | 2003-09-25 | Hazet Werk Zerver Hermann | Drehmomentschlüssel |
DK2189703T3 (da) | 2008-11-25 | 2012-08-20 | Joerg Hohmann | Sikkerhedsindretning til en højtryksforbindelsesdel ved et hydraulikudstyr |
DE102009043907A1 (de) | 2009-08-31 | 2011-03-03 | Frank Hohmann | Hydraulische Gewindebolzenspannvorrichtung und Verfahren zum großen Schrauben mittels der hydraulischen Gewindebolzenspannvorrichtung |
EP2953767B1 (de) * | 2013-02-05 | 2020-01-15 | Wärtsilä Finland Oy | Vorspannwerkzeug, vorspannsystem und verfahren zum vorspannen von bolzen |
CN103878579A (zh) * | 2014-03-28 | 2014-06-25 | 李圣用 | 一种液压式拧紧机的计数机构 |
CN108916157B (zh) * | 2018-08-03 | 2020-04-03 | 马鞍山市金工机械有限公司 | 一种具有易拆卸、可调缓冲的压料油缸 |
KR102270186B1 (ko) * | 2019-07-29 | 2021-06-28 | 주식회사 케이티앤지 | 에어로졸 생성 장치 |
CN111922691B (zh) * | 2020-08-14 | 2022-03-29 | 马鞍山市罗泰特机械制造有限公司 | 一种可计次的液压螺栓拉伸器 |
CN111922690B (zh) * | 2020-08-14 | 2022-03-29 | 马鞍山市罗泰特机械制造有限公司 | 一种具有计次功能的弹簧自复位双级液压拉伸器 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US384307A (en) * | 1888-06-12 | Corset | ||
DE306161C (de) * | ||||
US3186311A (en) * | 1962-10-03 | 1965-06-01 | Carl M Carlson | Air impulse counter |
US3703629A (en) * | 1970-06-01 | 1972-11-21 | Madatron Corp | Pneumatically operated counting device |
US3843047A (en) * | 1972-02-16 | 1974-10-22 | Daini Seikosha Tokyo Kk | Writing instrument with counter |
GB1408211A (en) * | 1972-02-16 | 1975-10-01 | Seiko Instr & Electronics | Writing utensil |
JPS5716387B2 (de) * | 1975-01-29 | 1982-04-05 | ||
US4322966A (en) * | 1981-05-26 | 1982-04-06 | The United States Of America As Represented By The Secretary Of The Army | Weapon cycle or shot counter |
DE3512568C2 (de) * | 1985-04-06 | 1994-01-13 | Festo Kg | Hubzähler für hin- und herbewegte Teile |
AT385341B (de) * | 1985-11-26 | 1988-03-25 | Hoerbiger Ventilwerke Ag | Druckimpulsbetaetigter mechanischer zaehler |
US4993259A (en) * | 1989-04-03 | 1991-02-19 | Automotive Products Plc | Method and apparatus for testing prefilled hydraulic systems |
DE4200035A1 (de) * | 1992-01-02 | 1993-07-08 | Unicraft Oy | Dichtungsanordnung |
DE4324888C3 (de) * | 1993-07-26 | 2000-07-27 | Frank Hohmann | Lastwechselzähler |
DE4341707C3 (de) * | 1993-11-12 | 1999-02-11 | Frank Hohmann | Hydraulische Gewindebolzenspannvorrichtung |
-
1993
- 1993-07-26 DE DE4324888A patent/DE4324888C3/de not_active Expired - Lifetime
-
1994
- 1994-07-23 WO PCT/EP1994/002444 patent/WO1995003592A1/de not_active Application Discontinuation
- 1994-07-23 EP EP94925384A patent/EP0706695B1/de not_active Revoked
- 1994-07-23 DE DE59400958T patent/DE59400958D1/de not_active Revoked
- 1994-07-23 JP JP7504953A patent/JPH09500991A/ja active Pending
- 1994-07-23 AT AT94925384T patent/ATE144849T1/de not_active IP Right Cessation
- 1994-07-23 US US08/591,574 patent/US5682025A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
Brochure "TRUMETER" 'Senior Pneumatic Counter' |
Also Published As
Publication number | Publication date |
---|---|
DE4324888C2 (de) | 1995-05-18 |
US5682025A (en) | 1997-10-28 |
DE4324888A1 (de) | 1995-02-02 |
WO1995003592A1 (de) | 1995-02-02 |
JPH09500991A (ja) | 1997-01-28 |
EP0706695B1 (de) | 1996-10-30 |
DE59400958D1 (de) | 1996-12-05 |
ATE144849T1 (de) | 1996-11-15 |
DE4324888C3 (de) | 2000-07-27 |
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