CN101263274B

CN101263274B - Spring tension

Info

Publication number: CN101263274B
Application number: CN2006800337767A
Authority: CN
Inventors: H·霍尔姆布姆
Original assignee: Cardo Entrance Solutions AB
Current assignee: Crawford Group AB
Priority date: 2005-09-15
Filing date: 2006-09-08
Publication date: 2012-08-08
Anticipated expiration: 2026-09-08
Also published as: EP1764473A1; RU2008114491A; WO2007032725A1; ATE479818T1; RU2403363C2; DK1764473T3; CN101263274A; EP1764473B1; DE602005023307D1

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 said 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 bascule is provided 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 the 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.Said axle is usually located at the opening top that is covered by door, and the path lateral setting of crossing over door.Helical spring is installed on this axle with roughly concentric mode, thereby the longitudinal centre line of spring is positioned on the longitudinal centre line of axle basically.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 the 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 helical spring fixing releasedly end of quilt that is attached on the rotatable shaft, and to alleviate tension force or to tighten the said 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 in these are installed, use 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 said axle thereby can be located at iron bar in one of them hole on the adapter etc. through insertion.Especially, safeguarding and the maintenance period that when also need be from the axle retracting spring before the beginning tension adjustment time, it is pretty troublesome usually and sometimes even dangerous that the operation of this adapter is set.As an example, thus a kind of mode with respect to lock spring base and locking spring commonly used is to be utilized in axle and one or more chocks of being located between the space in the spring base fix spring base.Chock is released vertically, sometimes, if chock is extracted, does not then have and is used for adapter is fixed on the 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 through 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 said axle; So that keep not moving of desired directions of axle collar opposing edge, the said axle collar is connected at least one spring; Through using the said axle collar of at least one said spanner turn to regulate the tension force in said at least one spring, up to reaching suitable spring tension.This axle collar comprises and is used for the said axle collar being fixed on when suitably regulating the locking device on the said axle at spring tension.

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 said spanner breaks away from.

Advantageously, axially engagement is engaged by tongue piece and groove (slip feather) and realizes, 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 said 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 said 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 said leading edge of this wrench spline of measuring between the leading edge of inner near surface that clamps and wrench spline that is slightly smaller than 90 degree provides the improved effect that grips.Advantageously, splined engagement comprises and engaging along the spline of axial (A) extension of said 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 said spanner.Therefore, if for example when adjustment of tonicity, splined engagement is broken away from, then attendant or setter needn't change gripping pinch bar.

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

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

Method according to the tension force in the regulating spring of aforementioned any one claim is particularly suitable for 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 said handle; Be installed in the spring-loaded spline latch mechanism on the said 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 said axle and in the second place, is used for said lock bolt is moved to another the lock bolt operating means the said primary importance and the second place from the said primary importance and the said 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 said wrench assembly.

As another advantage and important safety aspect, as long as lock bolt receives the external load that is caused by splined engagement, then the spring-loaded spline latch mechanism just can prevent that said splined engagement breaks away from.The lock bolt operating grip via a spring-operated property 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 property 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 greatly so that to being disengaged the resistance that provides enough.On the other hand, when on said lock bolt, not existing external load and lock bolt operating grip to activated, be delivered to the said 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 in the jaw zone, realizing splined engagement by the said spring that pushes away.

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

In addition, wrench assembly has the hook spare that said wrench assembly can be hung.Have realized that many doors need hang 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 said wrench assembly.Preferably, handle extends to a certain degree from handle portion, if so that exist operator's finger to be sandwiched in the 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 axial the 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 said spring on the said axle, and the main attachment part on the said axle collar forms the spline that longitudinally (C) extends on the neighboring of said main attachment part.

Preferably, this secondary attachment portion forms an integral body with main attachment part

Collar system comprises and is used for the said axle collar is fixed on the locking device on the said 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; Said collar system comprises and forms the body that is attached to said at least main attachment part; Said body comprises and is positioned at its inner complementary engagement means; And the hole that extend the inside towards said body from outside, said 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, said hole is provided with given interval around the periphery of said body and at the horizontal said periphery in (D) upper edge.

Description of drawings

Hereinafter will disclose method for optimizing of the present invention and presently preferred embodiment through accompanying drawing, in the accompanying drawings:

The up-down 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 more be clearly shown that the characteristic 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 method for optimizing of the present invention with partial perspective.

The specific embodiment

Hereinafter will be by accompanying drawing and with reference to some non-limiting examples of label declaration of accompanying drawing, so that more be clearly shown that function of the present invention and characteristic.To this method be 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 said 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 said axle collar 50 has the spline 52 of longitudinally (C) extension that on the neighboring of said main attachment part 51, forms, and said main attachment part 51 has at least one groove 53 that extends along horizontal (D) of said spline 52.Visible from Fig. 4, secondary attachment portion 54 forms an integral body with main attachment part 51.Therefore, only through 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 to make the zone in the junction surface on the external diameter of the part with spline of the axle collar 50, to form and closely cooperates.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 on the handle 2 of spanner 1, applies 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 ' is maintained at this position, can activate the lock bolt operating means 5 of first spanner 1, 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 receives external load, then said spring-loaded spline latch mechanism can prevent that said 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 said lock bolt operating means 5 and said spline latch mechanism 4.

As another advantage and important safety aspect, as long as lock bolt 15 receives the external load that is caused by splined engagement, then spring-loaded spline latch mechanism 4 can prevent that said 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 on spring-loaded latch mechanism 4, applies 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, then will be owing to keeping splined engagement from helical spring external load by at least one spanner of correct setting.

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 property 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 said lock bolt, not existing external load and lock bolt operating grip to activated, be delivered to the said 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 in the jaw zone, realizing splined engagement by the said spring that pushes away.

In addition, the torque resistance of said splined engagement can be by 14 controls of torque lock mechanism and locking, and this mechanism 14 can handle from said wrench assembly.Torque lock mechanism 14 comprises the screw or the like of the wall connection of passing elongate handle 2.This screw can get into 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 said spring 57 from wrench assembly 1 via the axle collar 50 effectively, the open mouth tongs 3 of wrench assembly 1 have asymmetric opening.

Joint through tongue piece 7 and groove 53 is realized axial engagement, 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 said axle collar 50 in the U-shaped expansion plate that complementally engages of grooves 53.Selectively, although not shown, the axle collar can comprise the U-shaped protuberance so that complementally engage with groove in the said axial locking.

In addition, wrench assembly 1 has the hook spare 18 that said 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.Can the removable handle portion 23 with optimum length be screwed on the elongate handle (not shown) of wrench assembly.

Another characteristic of the present invention is that handle 23 has handle 24 in the end so that help to take said 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 the 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 characteristics of in the above example that provides, describing that can improve tension adjustment can easily make up in many ways and can not deviate from scope of the present invention.

Claims

1. the method for the tension force in the spring (57) that is used to regulate be installed on the rotatable shaft; Said 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 said axle so that keep the axle collar (50) opposing along moving of desired directions not, the said axle collar (50) is connected at least one spring (57); Through using at least one said spanner (1; 1 ') the said axle collar of turn (50) is regulated the tension force in said at least one spring (57), reaches suitable tension force up to spring (57), and this method also comprises the step of location axial locking (7); Said axial locking (7) is arranged at least one said spanner (1; 1 ') on, and be connected to the said axle collar (50), thereby form said spanner (1; 1 ') with the axial engagement of the said axle collar (50), the joint of said axial locking comprises the locking of tongue piece and axial (A) of groove with respect to said.

2. method according to claim 1 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 said spanner (1,1 ') changes breaks away from.

3. method according to claim 1 is characterized in that, said spanner (1,1 ') passes through to realize less than the wrench spline angle (16) of 90 degree with the splined engagement of the axle collar (50).

4. method according to claim 3 is characterized in that, the splined engagement of the said spanner (1,1 ') and the axle collar (50) realizes through the wrench spline angle (16) between 80 degree and 90 degree.

5. method according to claim 1 is characterized in that, said splined engagement comprises and engaging along spline (53) of axial (A) extension of said axle.

6. method according to claim 1 is characterized in that, said 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 (5) of said spanner (1,1 ').

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

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

9. regulate the method for the tension force in the spring (57) that is installed on any one in sliding door and the rolling door (91), said method is according to the described method of aforementioned each claim.

10. method according to claim 9 is characterized in that, said sliding door is the up-down sliding door.