CN101263274A

CN101263274A - Spring tension

Info

Publication number: CN101263274A
Application number: CNA2006800337767A
Authority: CN
Inventors: H·霍尔姆布姆
Original assignee: Crawford Group AB
Current assignee: Crawford Group AB
Priority date: 2005-09-15
Filing date: 2006-09-08
Publication date: 2008-09-10
Anticipated expiration: 2026-09-08
Also published as: EP1764473A1; EP1764473B1; RU2008114491A; DK1764473T3; ATE479818T1; WO2007032725A1; RU2403363C2; DE602005023307D1; CN101263274B

Abstract

A method for adjusting tension in springs (57) mounted upon rotatable shafts is disclosed. The method comprises the steps of, applying a first and a second wrench (1, 1') for splined engagement with a collar (50) of said shaft so as to hold the collar (50) against movement in an undesired direction. The collar (50) being connected to at least one spring (57). Furthermore, the step of adjusting tension in said at least one spring (57) by winding said collar (50) with at least one of said wrenches (1, 1') until an appropriate tension of the spring (57) is achieved. It is also disclosed a wrench assembly (1) and a collar system (50) suitable for performing the method.

Description

Spring tension

Technical field

The present invention relates to a kind of method that is used to regulate the tension force in the spring that is installed on the rotatable shaft.In addition, the present invention relates to a kind of spanner that is suitable for using this method.And, the present invention relates to a kind of collar system of admitting described spanner that is adapted to.

Background technology

The installation of the especially overhead door that industry, dwelling house are used generally includes the installation guide, and this guide supports each side of removable door, and the side of door can be free to slide on this guide.Owing to most of removable doors overweight being difficult to for general personnel mentions, so the bascule of some type is set usually, can not bear the total weight of removable door with the removable door of box lunch between the open and close state (or opposite) when changing.Even for power-controlled door opener, still provide bascule so that can reduce the horsepower demand of CD-ROM drive motor.For security reasons, bascule also is essential under the situation of door opener fault.

At this door opener, especially have the powered motor and be mounted in helical spring on the rotatable shaft with the bascule of widely used main type in the door opener that help to open and close door.Described axle is usually located at the opening top that will be covered by door, and the path lateral setting of crossing over door.Helical spring is installed on this axle in roughly concentric mode, thereby the longitudinal centre line of spring is positioned on the longitudinal centre line of axle substantially.One end of spring is attached at this regularly and is rotatably mounted on the structure on it, and the other end of spring keeps being attached on the rotatable shaft releasedly.

The tensioning of door shows as adjusting and is applied to tension force on the rotatable shaft by helical spring, and the coiling bottom that this rotatable shaft also keeps being attached at door usually pulls element.When being regulated suitably, can think that tension force that spring applies just in time is equilibrated at the weight of the door that transmits between opening and closing moving periods.

The weight balancing effect of door can occur from the middle part of door for some rolling door (winding roller door) setting, perhaps is arranged to occur from full open position.In the initial installation of door, when spring that replacing breaks down, and even during periodic maintenance, must be with the tension adjustment of spring to expected degree, can close and the almost total weight of balance gate during door raises and reduces with side door.For the tension force of regulating spring, must unclamp the end that the helical spring quilt that is attached on the rotatable shaft is fixed releasedly, and to alleviate tension force or to tighten the described end of the mode of tension force with respect to axle rotation spring.

Power and/or the moment of torsion in order to finish the work that spring applied that use in these are installed are not little, so this is thought the operation of potentially dangerous by those skilled in the art.When an end of the spring that is attached to rotatable shaft was loosened, spring must be firmly held so that can freely not unclamp tension-free state.As workman or other personnel during in this zone, this unclamping may produce some very serious injuries.

Common method in the door industry at present is between the installation period of the place of door and later tension force at maintenance and maintenance period regulating spring.Usually adapter is applied on the axle, tightens described axle thereby can be located at iron bar in one of them hole on the adapter etc. by insertion.Especially, safeguarding and the maintenance period that when when also needing from the axle retracting spring before the beginning tension adjustment, it is pretty troublesome usually and sometimes even dangerous that the operation of this adapter is set.As example, thereby a kind of mode of deciding spring base and locking spring with respect to shaft lock commonly used is to utilize at axle and one or more chocks of being located between the space in the spring base to fix spring base.Chock is released vertically, sometimes, if chock is extracted, does not then have and is used for adapter is fixed on space on the axle.

The helical spring method that a target of the present invention provides a kind of safety and effectively is used for using in the tensioning door gear.A target of the present invention provides a kind of improved instrument of the interior spring that uses of tensioning door gear suitably that is used for.Another target of the present invention provides a kind of helical spring new attachment that is used for, and this attachment will make the operation of the helical spring tension force in the adjustment doors device become easy.

Summary of the invention

These and other target that below will provide realize by the method according to independent claims 1.The preferred steps of this method has been described in the dependent claims.Also disclose according to the wrench assembly of independent claims 13 with according to the collar system of independent claims 22.The preferred embodiments of the present invention have been provided in each dependent claims.

Now, according to the invention discloses a kind of method that is used to regulate the tension force in the spring that is installed on the rotatable shaft, said method comprising the steps of: the splined engagement (splined engagement) of using the axle collar of realization of first and second spanners and described axle, so that keep not moving of desired directions of axle collar opposing edge, the described axle collar is connected at least one spring; By using the described axle collar of at least one described spanner turn to regulate tension force in described at least one spring, up to reaching suitable spring tension.This axle collar comprises the locking device that is used for when spring tension is suitably regulated the described axle collar is fixed on the described axle.

Can access safe condition of work like this, and help to keep from the elastic force of spring or duration of work finds correct position and splined engagement completely in opposing.In addition, even splined engagement makes that the operating space of maintenance work and installation work is very little, still can carry out these work.

Preferably, axially locking is bonded in the whole spring tension regulating cycle and is held, and this spline that is included in during the change of described spanner breaks away from.

Advantageously, axial locking engages by tongue piece and groove (slip feather) and engages realization, and horizontal (B) with respect to axial (A) extends wherein said tongue piece in the circumference upper edge.Therefore, axial locking engages tongue piece and the groove locking that comprises with respect to axial (A) of axle.

More preferably, axial locking comprises the U-shaped expansion plate, this plate be used for the described axle collar in groove complementally engage.Selectively, although be not preferably, the axle collar comprises the U-shaped protuberance so that complementally engage with groove in the described axial locking.

Preferably, the splined engagement of the spanner and the axle collar by less than 90 degree and preferably the wrench spline angle between 80 degree and 90 degree realize that the complementary fit of the spline of spanner and the spline of the axle collar has reduced the danger of skidding.Have been found that the angle between the described leading edge of these wrench spline that are slightly smaller than 90 degree of measuring between the leading edge of inner near surface that clamps and wrench spline provides improved gripping effect.Advantageously, splined engagement comprises and engaging along the spline of axial (A) extension of described axle.

Another advantage is, splined engagement can be by the control of lock bolt functor, and this lock bolt functor can be handled from the lock bolt operating grip of described spanner.Therefore, if for example when adjustment of tonicity splined engagement is broken away from, then attendant or setter needn't change the gripping to pinch bar.

According to a preferred embodiment of the present invention, the moment of torsion of described splined engagement can be by torque lock mechanism controls and locking, and this torque lock mechanism can handle from described spanner.

Preferably, each spanner has open mouth tongs, and described open mouth tongs closely cooperate around the major part of the described axle collar, and described open mouth tongs are arranged for and described axle collar splined engagement.

Method according to the tension force in the regulating spring of aforementioned any one claim is particularly suitable for lifting sliding door (overhead sliding door), sliding door and rolling door.But, understand those skilled in the art and also can find other relevant range.

According to a second aspect of the invention, a kind of wrench assembly comprises: elongate handle, be positioned at the open mouth tongs structure that is used for closely centering on and engaging most of periphery of splined shaft of an end of described handle, be installed in the spring-loaded spline latch mechanism on the described handle, this spring-loaded spline latch mechanism has in primary importance gos deep into that the zone is closed in cramp joint so that splined engagement is closed the zone withdrawal so that the lock bolt that spline is disengaged from cramp joint on described axle and in the second place, is used for described lock bolt is moved to another lock bolt operating means the described primary importance and the second place from the described primary importance and the described second place one.

Can access safe condition of work like this, and help to keep from the elastic force of spring or duration of work finds correct position and splined engagement completely in opposing.In addition, splined engagement makes that the operating space that promptly is used in maintenance work and installation work is very little, still can carry out these work.

Preferably, wrench spline angle is less than 90 degree, preferably between 80 degree and 90 degree.

Advantageously, splined engagement can be controlled by lock bolt, and this lock bolt can be handled from the lock bolt operating grip of described wrench assembly.

As another advantage and important safety aspect, as long as lock bolt is subjected to the external load that caused by splined engagement, then the spring-loaded spline latch mechanism just can prevent that described splined engagement breaks away from.The lock bolt operating grip via a spring-operated be connected to lock bolt.If the load on the lock bolt surpasses by activating the load from spring that the lock bolt operating grip causes, then lock bolt will remain on correct position so that realize splined engagement, that is, the power that is applied on the spring-loaded latch mechanism by spring is crossed low and not enough so that splined engagement breaks away from.Therefore, if setter or attendant discharge two splined engagement simultaneously owing to maloperation, then at least one spanner will keep splined engagement when correctly being provided with.

Spring load in the spring-loaded splined engagement preferably provides by pushing away spring.This pushes away the bar that spring is connected to lock bolt.The lock bolt operating grip via spring-operated be connected to the bar of lock bolt.The spring performance that pushes away spring is low.Because the spline angle of spanner is less than 90 degree and preferably between 80 degree and 90 degree, so external load does not need very big to being disengaged the resistance that provides enough.On the other hand, when on described lock bolt, not existing external load and lock bolt operating grip to activated, be delivered to the described pulling force that pushes away spring from the lock bolt operating grip and make the lock bolt withdrawal.When the lock bolt operating grip was released, lock bolt was back into the position that is used for realizing splined engagement in the jaw zone by the described spring that pushes away.

In addition, the moment of torsion of described splined engagement can be by torque lock mechanism controls and locking, and this torque lock mechanism can handle from described wrench assembly.For can be smoothly near and power passed to described spring from wrench assembly effectively via the axle collar, the open mouth tongs of wrench assembly have asymmetric opening.

In addition, wrench assembly has the hook spare that described wrench assembly can be hung.Have realized that many need be hung up wrench assembly at certain altitude, hook spare helps this situation.

According to a preferred embodiment of the present invention, wrench assembly has removable handle portion so that wrench assembly can have different length.Replaceable handle portion with optimum length can be screwed on the elongate handle of wrench assembly.

Another advantage is that handle has handle in the end so that help to take described wrench assembly.Preferably, handle extends to a certain degree from handle portion, if so that exist operator's finger to be sandwiched in for example danger between wall and the handle portion of structural member, then this handle will provide enough spaces seriously to be crushed to avoid finger between them.Another purpose of handle is to prevent that spanner from skidding, and this is because this handle can prevent to fluff along the axial gripping of elongate handle during use.

According to a third aspect of the invention we, provide a kind of and be used to be rotatably installed in that axle is gone up and therefore can tensioning be installed in the collar system of the spring on the rotatable shaft.This collar system comprises and is adapted to the secondary attachment portion that is connected to an end that is installed in the described spring on the described axle, and the main attachment part on the described axle collar forms the spline that longitudinally (C) extends on the neighboring of described main attachment part.

Preferably, this secondary attachment portion and main attachment part form an integral body

Collar system comprises and is used for the described axle collar is fixed on locking device on the described axle.During this step, it is enough keeping a spanner antagonistic spring tension force, and when can the tension force in spring being regulated suitably with respect to the fixing axle collar of axle.

An optional embodiment according to a third aspect of the invention we, described collar system comprises and forms the body that is attached to described at least main attachment part, described body comprises and is positioned at its inner complementary engagement means, and the hole of extending towards the inside of described body from the outside, described hole is arranged for admits for example iron bar of optional tension adjustment instrument.This body for example makes can use the method for passing through the bar regulating spring commonly used at present under the disabled situation of the spanner of preferred type.

Preferably, described hole is provided with given interval around the periphery of described body and at the described periphery in horizontal (D) upper edge.

Description of drawings

To the preferred method of the present invention and presently preferred embodiment be disclosed by accompanying drawing hereinafter, in the accompanying drawings:

The lifting sliding door of the schematically illustrated traditional type of Fig. 1 a or rise slide (sectional door);

The rolling door of the schematically illustrated traditional type of Fig. 1 b;

Fig. 2 illustrates the phantom drawing of spanner according to a preferred embodiment of the invention;

Fig. 3 illustrates the lateral view of spanner under unfolding mode according to a preferred embodiment of the invention, so that clearly show that the feature of spanner;

Fig. 4 illustrates the phantom drawing according to the axle collar of the of the present invention second preferred aspect;

Fig. 5 illustrates the optimal way of application according to the preferred method of the present invention with partial perspective.

The specific embodiment

Hereinafter will be by accompanying drawing and some non-limiting examples of label declaration with reference to the accompanying drawings, so that clearly show that function of the present invention and feature.This method is disclosed in more detail now with reference to Figure 4 and 5.

Helical spring 57 around axle be provided with and at one end (not shown) be fixedly installed on the surrounding structure of door.This has represented the type of the tensioned axle of the present more typical door that is used to be designed to roll.The axle collar 50 is through on the helical spring 57 from the side, so that flange 55 is followed the spiral path of helical spring 57.Connector 59 is arranged on the axle collar so that be connected with the end of helical spring common bending (cranked).When the end of bending was connected with connector 59, the axle collar 50 was fixing with respect to helical spring 57, and spring 57 is maintained between flange 55 and the connector 59.But the axle collar 50 can be with respect to described axle rotation.This rotatable axle collar will have one group of screw 56, and this screw 56 can be positioned to engage spindle unit and the axle collar and axle are non-rotatably kept together.

When helical spring 57 was in its free state, the people in the zone of spring mechanism can be not dangerous.But, when the rotatable axle collar 50 has been tightened so that the end is when being in tension position, for the dangerous situation in this end.At this moment, the axle collar 50 must be securely held in the appropriate location so that trip spring suddenly not.

In addition, main attachment part 51 on the described axle collar 50 has the spline 52 of longitudinally (C) extension that forms on the neighboring of described main attachment part 51, and described main attachment part 51 has at least one groove 53 that extends along horizontal (D) of described spline 52.From Fig. 4 as seen, secondary attachment portion 54 and main attachment part 51 form an integral body.Therefore, only by just can use spanner 1,1 ' to carry out safety and tension adjustment stably near main attachment part 51.

Now, also with reference to Fig. 3, wherein disclose have elongate handle 2 and form be open mouth tongs junction surface 3 according to wrench assembly 1 of the present invention.This spanner is designed so that the zone in the junction surface will form and closely cooperates on the external diameter of the part with spline of the axle collar 50.When lock bolt operating means 5 was in normal condition, spline latch mechanism 4 projected upwards, so that the joint spline 15 of spanner is positioned at the zone at junction surface 3.At first, lever arm 10 activates recessed tongue piece 7 so that realize the axial locking of spanner 1.

Make plunger part inwardly advance towards elongate handle 2 pulling lock bolt operating means 5, thereby spline latch mechanism 4 is drawn in the elongate handle 2.Like this, can slide on the spline part of adapter in joint portion 3.When wrench spline 15 engaged this spline part, the power that applies on the handle 2 of spanner 1 will apply the power that makes the rotatable axle collar 50 rotations.

Obviously, two spanners 1,1 ' can engage the spline part of the axle collar 50.When two this spanners 1,1 ' engaged the axle collar 50, one group of screw 56 on the rotatable axle collar 50 can be released.When unclamp the rotatable axle collar 50 with the axle be connected the time, spanner 1,1 ' can be used for preventing that the axle collar 50 from rotating on axle.In a spanner 1 of the spline 53 that keeps its spline latch mechanism 15 joint axle collars, second spanner can make lock bolt operating means 5 activate so that the spline part of its wrench spline 15 and the axle collar 50 is disengaged.Utilize first spanner 1 to keep the axle collar not rotate together with the axis, then second spanner 1 ' is advanced around the spline part of the axle collar 50 pivotly.When second spanner 1 ' was positioned at a reposition, spline latch mechanism 4 can be released, so that its wrench spline 15 engages the spline part of the axle collar 50.When second spanner 1 ' was maintained at this position, the lock bolt operating means 5 of actuatable first spanner 1 was so that the spline of the spline latch mechanism 15 and the axle collar is disengaged.This moment second, spanner 1 ' was rotatablely returned, and alignd with first spanner 1 up to its elongate handle 2.Use first spanner 1 and second spanner 1 ' to repeat the suitably tension force of adjustable screw spring 57 of said process, utilize the axial locking 7 that activated to keep each spanner 1,1 ' axial locking simultaneously.This has described the possibility of spanner in more detail.

As another advantage and important safety aspect, as long as lock bolt is subjected to external load, then described spring-loaded spline latch mechanism can prevent that described splined engagement breaks away from.What spline latch mechanism 4 comprised tensioning pushes away spring 13, and this pushes away bar 6 work that spring 13 opposings connect described lock bolt operating means 5 and described spline latch mechanism 4.

As another advantage and important safety aspect, as long as lock bolt 15 is subjected to the external load that caused by splined engagement, then spring-loaded spline latch mechanism 4 can prevent that described splined engagement breaks away from.Lock bolt operating grip 5 functionally is connected to spline latch mechanism 4 via spring 13.If the load on the lock bolt 15 surpasses by activating the load from spring 13 that this lock bolt operating grip 5 causes, then lock bolt 15 will remain on correct position so that realize splined engagement, that is, the power that applies on spring-loaded latch mechanism 4 of spring 13 is crossed low and not enough so that splined engagement breaks away from.Therefore, if setter or maintenance personal activate the lock bolt operating grip 5 of two spanners simultaneously owing to maloperation, at least one spanner that then is set correctly will be owing to keeping splined engagement from helical spring external load.

Spring load in spring-loaded splined engagement preferably provides by pushing away spring.This pushes away the bar that spring is connected to lock bolt.The lock bolt operating grip via a spring-operated be connected to the bar of lock bolt.The spring performance that pushes away spring is low.Because the spline angle of spanner does not provide enough resistance so external load does not need very big for the disengaging effect less than 90 degree and preferably between 80 degree and 90 degree.On the other hand, when on described lock bolt, not existing external load and lock bolt operating grip to activated, be delivered to the described pulling force that pushes away spring from the lock bolt operating grip and make the lock bolt withdrawal.When the lock bolt operating grip was released, lock bolt was back into the position that is used for realizing splined engagement in the jaw zone by the described spring that pushes away.

In addition, the torque resistance of described splined engagement can be by 14 controls of torque lock mechanism and locking, and this mechanism 14 can handle from described wrench assembly.Torque lock mechanism 14 comprises the screw or the like of the wall connection of passing elongate handle 2.This screw can enter the cavity of spline latch mechanism 4 from the side, and the bottom of supporting this cavity.Simultaneously, this cavity stretches along the axial direction of elongate handle 2, so that spline latch mechanism 4 can move when activateding.In addition, for can be approaching smoothly, and power be passed to described spring 57 from wrench assembly 1 effectively via the axle collar 50, the open mouth tongs 3 of wrench assembly 1 have asymmetric opening.

Joint realization by tongue piece 7 and groove 53 axially locks joint, and wherein said tongue piece 7 is along circumference and with respect to axially horizontal (B) extension of (A).This can be more clearly visible in Fig. 2.Axial locking 7 comprise be used for the described axle collar 50 in the U-shaped expansion plate that complementally engages of groove 53.Selectively, although not shown, the axle collar can comprise the U-shaped protuberance so that complementally engage with groove in the described axial locking.

In addition, wrench assembly 1 has the hook spare 18 that described wrench assembly 1 can be hung.Have realized that so many doors need be hung up instrument at certain altitude, hook spare 18 is favourable for this situation owing to often do not have enough spaces to be used for place tool when instrument does not use.

According to a preferred embodiment of the invention, wrench assembly 1 has removable handle portion 23, so that wrench assembly 1 can have different length.Removable handle portion 23 with optimum length can be screwed on the elongate handle (not shown) of wrench assembly.

Another feature of the present invention is that handle 23 has handle 24 in the end so that help to take described wrench assembly.According to a preferred embodiment of the present invention, this handle extends to a certain degree from handle portion, if so that exist operator's finger to be sandwiched in for example danger between wall and the handle portion of structural member, then this handle will provide enough spaces seriously to be crushed to avoid finger between them.Another purpose of handle is to prevent that spanner from skidding, this be because this handle can prevent during use elongate handle axially on clamping take place loosening.

Should be understood that the various features of describing that can improve tension adjustment can easily make up in many ways and can not deviate from scope of the present invention in the above example that provides.

Claims

1. the method for the tension force in the spring (57) that is used to regulate be installed on the rotatable shaft, described axle is installed on the door, said method comprising the steps of: use first and second spanners (1,1 ') with the axle collar (50) splined engagement of described axle so that keep the axle collar (50) opposing along moving of desired directions not, the described axle collar (50) is connected at least one spring (57); By using at least one described axle collar of described spanner (1,1 ') turn (50) to regulate the interior tension force of described at least one spring (57), reach suitable tension force up to spring (57).

2. according to the method for claim 1, it is characterized in that, this method comprises the step of location axial locking (7), described axial locking (7) is arranged at least one described spanner (1,1 ') on, and be connected to the described axle collar (50), engage with the axial locking of the described axle collar (50) thereby form described spanner (1,1 ').

3. according to each method among the claim 1-2, it is characterized in that, this axially locking be bonded in the whole spring tension regulating cycle and be held, the spline during the position that is included in one of them described spanner (1,1 ') changes breaks away from.

4. according to each method among the claim 1-3, it is characterized in that the joint of described axial locking comprises the locking with respect to axial (A) of described axle of tongue piece and groove.

5. according to each method among the claim 1-4, it is characterized in that, the splined engagement of the described spanner (1,1 ') and the axle collar (50) by less than 90 degree and preferably the wrench spline angle (16) between 80 degree and 90 degree realize.

6. according to each method among the claim 1-5, it is characterized in that described splined engagement comprises and engaging along spline (53) of axial (A) extension of described axle.

7. according to each method among the claim 1-6, it is characterized in that described splined engagement can be by the control of lock bolt functor, this lock bolt functor can be handled from the lock bolt operating grip (5) of described spanner (1,1 ').

8. according to each method among the claim 1-7, it is characterized in that the moment of torsion of described splined engagement can be by torque lock mechanism (14) control and locking, this torque lock mechanism (14) can handle from described spanner (1,1 ').

9. according to each method among the claim 1-8, it is characterized in that each spanner (1,1 ') has open mouth tongs (3), described open mouth tongs (3) closely cooperate around the major part of the described axle collar (50), and described open mouth tongs (3) are arranged to and the described axle collar (50) splined engagement.

10. according to method aforementioned each claim, that regulate the tension force in the spring (57) on any one that is installed in lifting sliding door (81), sliding door and the rolling door (91).

11. a door spring tension force wrench assembly (1) comprises elongate handle (2); Be positioned at the open mouth tongs structures (3) that are used for closely centering on and engaging most of periphery of splined shaft of an end of described handle (2); Be installed in the spring-loaded spline latch mechanism (4) on the described handle (2), this spring-loaded spline latch mechanism (4) has in primary importance and stretches into that the zone is closed in cramp joint so that splined engagement is closed the zone withdrawal so that the lock bolt that spline is disengaged (15) from described cramp joint on described axle and in the second place; Be used for described lock bolt (15) is moved to another lock bolt operating means (5) the described primary importance and the second place from the described primary importance and the described second place one.

12. the wrench assembly (1) according to claim 11 is characterized in that, described wrench spline angle (16) is less than 90 degree, preferably between 80 degree and 90 degree.

13., it is characterized in that described splined engagement can be by lock bolt functor (4) control according to each wrench assembly (1) among the claim 11-12, this lock bolt functor (4) can be handled from the lock bolt operating grip (5) of described wrench assembly (1).

14. according to each wrench assembly (1) among the claim 11-13, it is characterized in that, as long as the external load that is subjected to of described lock bolt (15) surpass applied in order to activate the load of described spring-loaded spline latch mechanism (4), then described spring-loaded spline latch mechanism (4) just can prevent that described splined engagement breaks away from.

15., it is characterized in that the moment of torsion of described splined engagement can be by torque lock mechanism (14) control and locking according to each wrench assembly (1) among the claim 11-14, this torque lock mechanism (14) can handle from described wrench assembly (1).

16., it is characterized in that the open mouth tongs (3) of described wrench assembly (1) have asymmetric opening according to each wrench assembly (1) among the claim 11-15.

17., it is characterized in that described wrench assembly (1) has the hook spare (18) that described wrench assembly (1) can be hung according to each wrench assembly (1) among the claim 11-16.

18., it is characterized in that described wrench assembly (1) has removable handle portion (23), so that wrench assembly (1) can have different length according to each wrench assembly (1) among the claim 11-17.

19., it is characterized in that described handle (2) has handle (24) in the end, so that help to take described wrench assembly (1) according to each wrench assembly (1) among the claim 11-18.

20. a collar system (50), this collar system (50) are used to be rotatably installed in, and axle is gone up and therefore can tensioning be installed in spring (57) on the rotatable shaft, this collar system (50) comprising:

Be adapted to the secondary attachment portion (54) that is mechanically connected to an end that is installed in the described spring (57) on the described axle,

Main attachment part (51) on the described axle collar (50) forms the vertically spline (52) of (C) extension on the neighboring of described main attachment part (51).

21. the collar system (50) according to claim 20 is characterized in that, in this collar system (50), and this secondary attachment portion (54) and main attachment part (51) mechanical connection.

22. the collar system (50) according to claim 21 is characterized in that, in this collar system (50), this secondary attachment portion (54) and main attachment part (51) form an integral body.

23., it is characterized in that described collar system (50) comprises and is used for the described axle collar (50) is fixed on locking device (56) on the described axle according to each collar system (50) among the claim 20-22.