CN206668472U - Off-course brake mounting tool - Google Patents

Abstract

The utility model provides a kind of off-course brake mounting tool, the off-course brake mounting tool includes support (7), the annular bearing plate (8) being arranged above the support (7), the bearing plate (8) has multiple off-course brake placement regions, each off-course brake placement region is provided with alignment pin (9) and corresponding with the installation pore size distribution on off-course brake mounting surface (2) formed with gap (81) or through hole, the distribution of the alignment pin (9) and the gap (81) or through hole.According to the utility model, the labor intensity and potential safety hazard of off-course brake assembling work can be reduced, improves aligning accuracy and efficiency of assembling.

Description

Off-course brake mounting tool

Technical field

It the utility model is related to wind power generating set, and in particular to a kind of frock for aiding in installation off-course brake.

Background technology

Yaw system is one of essential composition system of horizontal shaft type wind-driven generator group.Yaw system mainly includes Yaw, yaw brake disc, off-course brake, yaw motor and decelerator.

Yaw system mounting structure schematic diagram is shown in Fig. 1, and the outer ring 31 of yaw 3 is fixed on the bottom of engine room foundation 1, partially The inner ring 32 of boat bearing 3 is fixed together with yaw brake disc 4 and tower 6, and wherein yaw brake disc 4 is between yaw 3 Between inner ring 32 and tower 6.Off-course brake 5 is arranged on the off-course brake mounting surface 2 of engine room foundation 1 by bolt.Driftage Brake 5 divides to be attached for upper and lower two parts, upper and lower two parts by bolt, and yaw brake disc 4 is between off-course brake 5 Between upper and lower two parts.Yaw motor and decelerator not shown in Fig. 1, yaw motor and decelerator are typically mounted on engine room foundation 1, the torque of yaw motor output drives the drive gear below decelerator to rotate via decelerator, drive gear and yaw The internal tooth engagement of 3 inner rings 32, so as to carry out yaw rotation.Fig. 1 is illustrated that drive gear engages with the inner ring 32 of yaw 3 Construction, can also use the construction that be engaged with the outer ring 31 of yaw 3 of drive gear, now the inner ring 32 of yaw 3 is consolidated The bottom of engine room foundation 1 is scheduled on, outer ring 31 and the yaw brake disc 4 and tower 6 of yaw 3 are fixed together, gone off course simultaneously The position of motor and decelerator also will accordingly adjust.

The generally use hydraulic braking of off-course brake 5, using hydraulic-driven friction plate, makes it act on yaw brake disc 4. Certain brake torque can be kept by adjusting hydraulic pressure, during operating on low voltage, prevents the engagement of the gear of yaw 3 from waving, makes The stable yaw rotation of cabin；It is sustainable during high-pressure work to check yaw brake disc 4, do not allow yaw rotation.Moreover, yaw brake Device 5 can absorb small free deflection vibration, avoids the alternating download of the gear tooth of yaw 3 caused by the wind vector of vibration Lotus, prevent the gear tooth premature harm of yaw 3.

One megawatt of rank wind power generating set needs to install how secondary off-course brake.Existing assembly method is to lean on manpower Or auxiliary lift apparatus lifts single off-course brake, is slowly aligned, adjusted, is horizontally mounted off-course brake, passes through After adjustment contraposition, fixed with fastener.This method has that labor intensity is big, potential safety hazard is big, off-course brake and cabin bottom The problem of seat mounting hole contraposition is difficult, efficiency of assembling is low, it is therefore necessary to improved this.

Utility model content

The utility model proposes regarding to the issue above, its object is to provide a kind of off-course brake mounting tool, The labor intensity and potential safety hazard of off-course brake assembling work are reduced, improves aligning accuracy and efficiency of assembling.

In order to solve the above-mentioned technical problem, a technical scheme of the utility model use is：A kind of yaw brake is provided Device mounting tool, including support, the annular bearing plate that is arranged above the support, the bearing plate have multiple yaw brakes Device placement region, each off-course brake placement region are provided with alignment pin and formed with gap or through hole, the alignment pins And the distribution of the gap or through hole is corresponding with the installation pore size distribution on off-course brake mounting surface.

Alternatively, the alignment pin is detachably connected to the bearing plate.

Alternatively, the alignment pin is expansion pin.

Alternatively, the quantity for the alignment pin that each off-course brake placement region is arranged is two or more It is individual, and less than the installation hole number of off-course brake.

Alternatively, the off-course brake mounting tool also includes being arranged on multiple first supports on the outside of the bearing plate Stopping means, first supporting and limiting device include the first rolling member and baffle plate, and first rolling member is stopped with driftage The bottom surface of hull contacts and can support the yaw brake disc and rotates, and the outer peripheral edge of the baffle plate and the yaw brake disc connects Touch.

Alternatively, the off-course brake mounting tool also includes being arranged on multiple second supports on the outside of the bearing plate Stopping means, second supporting and limiting device include the second rolling member, and second rolling member brakes with the driftage The outer peripheral edge of disk contacts and can support the yaw brake disc and rotates.

Alternatively, the off-course brake mounting tool also includes being arranged on multiple first supports on the outside of the bearing plate Stopping means and multiple second supporting and limiting devices, first supporting and limiting device include the first rolling member, and described first Rolling member is contacted with the bottom surface of yaw brake disc to support the yaw brake disc to rotate, the second supporting and limiting device bag The second rolling member is included, second rolling member contacts with the outer peripheral edge of the yaw brake disc and can support the driftage and stops Hull rotates.

Alternatively, the off-course brake mounting tool also includes the hanger for being connected to the support or the bearing plate.

Alternatively, the off-course brake mounting tool also includes axial direction shifting of the limitation off-course brake along the alignment pin Dynamic auxiliary safety device.

In order to solve the above-mentioned technical problem, another technical scheme of the utility model use is：A kind of yaw brake is provided Device mounting tool, including support, it is arranged at the multiple bearing plates separated above the support and each other, each bearing plate tool There is at least one off-course brake placement region, each off-course brake placement region is provided with alignment pin and formed with gap Or through hole, the distribution of the alignment pin and the gap or through hole are corresponding with the installation pore size distribution on off-course brake mounting surface.

According to the utility model, how secondary off-course brake can be placed simultaneously on bearing plate, will how secondary off-course brake one Rise and be raised to off-course brake mounting surface, and realize that off-course brake is determined with the accurate of off-course brake mounting surface by alignment pin Position, after positioning to be achieved, can directly be installed by gap or through hole with bolt to off-course brake.Thus, significantly drop Low labor intensity and potential safety hazard, improve aligning accuracy and efficiency of assembling.

Brief description of the drawings

Fig. 1 is yaw system mounting structure schematic diagram.

Fig. 2 is the schematic diagram according to the off-course brake mounting tool of the utility model embodiment.

Fig. 3 is Fig. 2 top view.

Embodiment

Embodiment of the present utility model is specifically described below in conjunction with accompanying drawing.

As shown in Figures 2 and 3, support 7 may include according to the off-course brake mounting tool of the utility model embodiment, hold Weight plate 8 and alignment pin 9 (also referred to as correcting rod).

Support 7 supports whole frock and need to assemble parts.The support 7 shown in Fig. 2 and Fig. 3 is with rectangular cross section Be in octagonal support.It is other to can be used for supporting but the structure type of support 7 is not limited to structure shown in Fig. 2 and Fig. 3 The support configurations of whole frock and parts.

Bearing plate 8 is located at the top of support 7, is fixedly connected with support 7, bearing plate 8 and 7 solderable connection of support, can also make Connected with threaded fastener or other fixing means.Bearing plate 8 is used for carrying the weight of off-course brake 5.It will can correspond to every The region of secondary off-course brake is referred to as off-course brake placement region (for example, Fig. 3 a1, a2, a3).Off-course brake rest area The distribution in domain is corresponding with the distribution of the off-course brake installation site on the off-course brake mounting surface 2 of fan engine room, Ke Yiyan The whole circumference of bearing plate 8 uniformly or non-uniform Distribution, also can be only in the range of certain angle uniformly or non-uniform Distribution.Load-bearing Plate 8 can be in a ring.As variation, multiple bearing plates separated each other can be fixed on support 7, each bearing plate is used for carrying At least one secondary off-course brake 5.Now, the length of each bearing plate can be different.

A number of alignment pin 9 is provided with each off-course brake placement region.Load-bearing is placed into off-course brake 5 When on plate 8, alignment pin 9 is inserted into the mounting hole 51 of off-course brake 5, plays guiding and positioning action.Alignment pin 9 can be circle Columnar workpiece, it is possible to use there is the expansion pin for being radially expanded contractile function.Moreover, cylindric workpiece and expansion can be used in mixed way Pin, such as a secondary off-course brake 5 is positioned using the combination of a cylindric workpiece and an expansion pin.

Preferably positioned per secondary off-course brake 5 using two alignment pins 9.Certainly, it is right using more than two alignment pin 9 Even one secondary off-course brake 5 is positioned.Moreover, when the frictional force between alignment pin 9 and mounting hole 51 is larger, can make A secondary off-course brake 5 is positioned with an alignment pin 9.Off-course brake 5 has multiple mounting holes 51, with a secondary driftage The quantity for the alignment pin 9 that brake 5 coordinates should be less than the quantity of mounting hole 51 of the off-course brake 5, and its reason will be said below It is bright.When using expansion pin as alignment pin 9, one secondary off-course brake 5 is positioned i.e. using at least one expansion pin Can.

Alignment pin 9 can be threaded connection with the tapped alignment pin mounting hole on bearing plate 8.Alignment pin 9 can also be adopted It is detachably mounted with other on bearing plate 8.Alignment pin 9 is more than off-course brake 5 relative to the height of the bearing plate 8 The length of mounting hole 51, to make the mounting hole that the end of alignment pin 9 is inserted on off-course brake mounting surface 2 when mounted In, play exactitude position effect.

Gap 81 is also formed with bearing plate 8.The distribution of foregoing alignment pin mounting hole and gap 81 is pacified with off-course brake Installation pore size distribution on dress face 2 is corresponding.Gap 81 can also be replaced with through hole.The size of gap 81 or through hole should be greater than installing The diameter of hole 51, in order to be inserted in mounting hole 51 and tighten bolt.That is, alignment pin 9 is inserted in a part of mounting hole 51, and is not had The other mounting holes 51 for having insertion alignment pin 9 are exposed by gap 81 or through hole.Each gap 81 or through hole can expose a peace Hole 51 is filled, can also expose two or more mounting holes 51.

Thus, how secondary off-course brake 5 can be placed simultaneously on bearing plate 8, and by off-course brake mounting tool and its On how secondary off-course brake 5 be raised to off-course brake mounting surface 2 together, and by the way that alignment pin 9 is inserted into yaw brake Mounting hole on device mounting surface 2 realizes being accurately positioned for off-course brake 5 and off-course brake mounting surface 2.Positioning to be achieved Afterwards, directly off-course brake 5 can be fixed with bolt by gap 81 or through hole.Then, by off-course brake erector Dress is removed, bolt is inserted into the mounting hole 51 for being previously-inserted alignment pin 9 and off-course brake mounting surface 2 corresponding mounting hole it Tightened afterwards with nut, so as to be finally completed the fixation of off-course brake 5.The fixation removed before off-course brake mounting tool can Referred to as the first stage is fixed, and removes the fixation after off-course brake mounting tool and can be described as second stage and fixes.First stage Fixation is to still ensure that off-course brake 5 is not fallen off when removing off-course brake mounting tool.In order to carry out the first rank Section is fixed, and the quantity of the alignment pin 9 coordinated with every secondary off-course brake 5 should be less than the installation hole number of off-course brake 5, so as to Mounting hole for being not inserted into alignment pin 9 inserts bolt and fixed with carrying out the first stage.

Hanger 12 can be fixedly connected with support 7 or bearing plate 8, off-course brake is installed with horizontal attitude using hanger 12 Frock and how secondary off-course brake 5 thereon are raised to off-course brake mounting surface 2.A hanger is shown in figs. 2 and 3 12 are connected to support 7, and another hanger 12 is connected to the example of bearing plate 8.The quantity of hanger 12 preferably two and to arrangement, But not limited to this.In addition, also can be without using hanger 12, but use other auxiliary lift apparatus lifting off-course brake erectors Dress and how secondary off-course brake 5 thereon.That is, if only considering horizontal lifting assembling, hanger 12 is not required 's.

Moreover, auxiliary safety device 11 can be also used cooperatively, so as to inclination or even vertical state lifting assembling driftage system Dynamic device mounting tool and how secondary off-course brake 5 thereon.

Auxiliary safety device 11 is arranged on bearing plate 8.Auxiliary safety device 11 may include retainer 111 and from retainer The vertical rod portion 112 that 111 bottoms extend downwardly.The lower end outer surface of vertical rod portion 112 can form screw thread, by and the combination of nut fix In bearing plate 8.By tightening nut, the posture of auxiliary safety device 11 can be adjusted, retainer 111 is located at and is made with driftage The second place that the first position of the dynamic upper surface of device 5 or retainer 111 stagger with off-course brake 5.When retainer 111 When first position, the free degree of off-course brake 5 can be limited, prevents it from moving along the vertical direction.Moreover, positioned at first When putting, retainer 111 be not limited to the upper surface of off-course brake 5, such as can the outer surface of off-course brake 5 set it is recessed Groove, retainer 111 is set to snap onto in the groove.Auxiliary safety device 11 may be alternatively provided as vertical rod portion 112 and be fixed on bearing plate 8, The structure type that retainer 111 is swung relative to vertical rod portion 112.Moreover, auxiliary safety device 11 can limit driftage with other The device of the displacement of brake 5 realizes that limitation off-course brake 5 moves along the axial direction of alignment pin 9.

Obliquely or vertically lifting assembling when, first how secondary off-course brake 5 is placed on bearing plate 8, then lifting it Before, auxiliary safety device 11 is adjusted to first position, limitation off-course brake 5 in 9 axial top offset of alignment pin, followed by Hanger 12 lifts by crane, by the stress for adjusting each hanger 12 so that off-course brake mounting tool overturn predetermined angular, it is inclined or Vertical state.Hereafter, the how secondary off-course brake 5 by off-course brake mounting tool and thereon moves to off-course brake mounting surface 2, ensuing operation is similar when being assembled with level lifting.Now, need engine room foundation equally be overturn in advance respective angles with Close and use.

As it was previously stated, more secondary driftage systems can be installed simultaneously according to the off-course brake mounting tool of the utility model embodiment Dynamic device, effectively improves efficiency of assembling, reduces labor intensity.Moreover, simple to operate, equipment cost is low, has higher Economic benefit.If moreover, coordinating auxiliary safety device 11 and hanger 12, horizontal lifting assembling is can be not only used for, also can be used for tilting Or even vertical lifting assembling.

In addition, auxiliary safety device 11 can be omitted when using expansion pin as alignment pin 9.Certainly, expansion pin and auxiliary Safety device 11 can be also used cooperatively, more reliably to prevent off-course brake from falling when tilting or even vertical lifting assembling Fall.

In addition, can by set yaw brake disc supporting and limiting device 10 come and meanwhile how secondary off-course brake and driftage be installed Brake disc.

Yaw brake disc supporting and limiting device 10 may include the first supporting and limiting device 101 and the second supporting and limiting device 102.First supporting and limiting device 101 may include the first rolling member 103 and baffle plate 104.First rolling member 103 is stopped with driftage The bottom surface of hull 4 (its outer peripheral edge is shown in broken lines in Fig. 2) contacts and can support the yaw brake disc 4 and rotates, the baffle plate 104 outer peripheral edges for being used to contact yaw brake disc 4 prevent it from coming off.Second supporting and limiting device 102 includes the second rolling member 105, the second rolling member 105 contacts with the outer peripheral edge of yaw brake disc 4 and can support the yaw brake disc and rotates.Thus, Yaw brake disc 4 can be rotatablely arranged on off-course brake mounting tool.The first and second foregoing rolling members Roller, roller or ball can be used.

First supporting and limiting device 101 and 102 relative bearing plate 8 of the second supporting and limiting device stretch out towards outside.First The support supporting and limiting device 102 of stopping means 101 and second may be bolted in support 7 or bearing plate 8, also solderable to be fixed on branch Frame 7 or bearing plate 8.Alternatively, it is adjustable to may be configured as position for the first supporting and limiting device 101 and the second supporting and limiting device 102 Mode.Fig. 2 and Fig. 3 shows that two the second supporting and limiting devices 102 are located at side, four the first supporting and limiting devices 101 Arrangement positioned at two both sides of the second supporting and limiting device 102, but not limited to this, its quantity and arrangement are adjustable, Such as the first supporting and limiting device 101 and the second supporting and limiting device 102 can be alternately arranged.If moreover, only consider horizontal rise Lifting is matched somebody with somebody, and can omit the second supporting and limiting device 102.Now, it can set in baffle plate 104 and be contacted with the outer peripheral edge of yaw brake disc 4 The rolling member such as roller, roller or ball.Moreover, if the first supporting and limiting device 101 and the second support limit are set simultaneously Device 102, baffle plate 104 can be omitted.First supporting and limiting device 101 and the second supporting and limiting device 102 can be L-shaped, but not It is limited to this.

It is described below whole to off-course brake and yaw brake disc using off-course brake mounting tool of the present utility model Body carries out the process of horizontal lifting assembling and inclination and vertical lifting assembling.

Level lifting assembling process explanation

It is sequentially placed the latter half of off-course brake 5, yaw brake disc 4, the top half of off-course brake 5.Specifically Ground, after the mounting hole 51 of the latter half of each off-course brake 5 is directed at alignment pin 9 first, slowly by each driftage The latter half of brake 5 is placed into bearing plate 8, and now alignment pin 9 is inserted into mounting hole 51 and plays guiding function.Then, Yaw brake disc 4 is placed on the first supporting and limiting device 101.Finally, by the peace of the top half of each off-course brake 6 Fill hole 51 to be aligned after alignment pin 9, slowly put the top half of each off-course brake 5 under the guiding of alignment pin 9 Put onto the latter half.Now, yaw brake disc 4 is between two parts up and down of off-course brake 5, but not with any of which One contact, is only supported by the first rolling member 103 of the first supporting and limiting device 101.

If the position of yaw brake disc 4 is undesirable, rotatable yaw brake disc 4 is adjusted to suitable installation site.Due to driftage The bottom surface and outer peripheral edge of brake disc 4 contact with the first rolling member 103, the second rolling member 105 respectively, therefore are easy to rotate partially Navigate brake disc 4 (if only carrying out horizontal lifting assembling, can omit the second supporting and limiting device 102 and the second rolling member 105).

After adjustment finishes, using the horizontal lifting off-course brake mounting tool of hanger 12, by off-course brake erector Dress, off-course brake 5 and yaw brake disc 4 are lifted to off-course brake mounting surface 2.Alignment pin 9 is prominent with respect to off-course brake 5 Go out, by the corresponding mounting hole being inserted into alignment pin 9 on off-course brake mounting surface 2, off-course brake 5 and driftage can be achieved Brake mounting surface 2 is accurately positioned.After positioning is completed, directly by the gap 81 (or through hole) on bearing plate 8 by bolt The corresponding mounting hole of the mounting hole 51 and off-course brake mounting surface 2 that are inserted into off-course brake 5 is tightened with nut afterwards, to enter The row first stage is fixed.

Moreover, yaw brake disc 4 is bolted yaw 3.

The first stage of off-course brake to be done is fixed after the fixation with yaw brake disc, removes off-course brake peace Fill frock.Because now off-course brake 5 and yaw brake disc 4 have been bolted to target location, therefore without worrying Off-course brake 5 and yaw brake disc 4 come off.After off-course brake mounting tool is removed, bolt is inserted into original insert The corresponding mounting hole of the mounting hole 51 and off-course brake mounting surface 2 that enter alignment pin 9 is tightened with nut afterwards, carries out second stage It is fixed, so as to be finally completed the installation of off-course brake 5.

Tilt and vertical (90 degree) are lifted by crane assembling process explanation

Inclination and vertical lifting assembling refer to will be partially after placement off-course brake 5 and yaw brake disc 4 on bearing plate 8 The lifting of brake mounting tool navigate as obliquely or vertically state, is then assembled.Now, engine room foundation need to equally be overturn phase Answer angle with the use of.

It is identical when placing the process of off-course brake 5 and yaw brake disc 4 with level lifting assembling.If yaw brake disc 4 Position is undesirable, and rotatable yaw brake disc 4 is adjusted to suitable installation site.Due to the bottom surface and outer peripheral edge of yaw brake disc 4 Contacted respectively with the first rolling member 103, the second rolling member 105, therefore be easy to rotate yaw brake disc 4.Then using hanging When ear 12 lifts by crane, by adjusting the stress of hanger 12, make off-course brake mounting tool, off-course brake 5 and yaw brake disc 4 whole Body overturns predetermined angular.Now, auxiliary safety device 11 to first position, limitation off-course brake 5 need to be adjusted in advance to position 9 axial top offset of pin, avoids off-course brake 5 from dropping, evades security risk.Hereafter class when operation is assembled with horizontal lifting Seemingly.Can be when off-course brake mounting tool be moved near off-course brake mounting surface 2, again to the position of yaw brake disc 4 Rotation adjustment is carried out, or can not adjusted before lifting, and is adjusted before final installation.

As it was previously stated, how secondary off-course brake and yaw brake disc can be installed simultaneously according to the utility model, effectively carry High efficiency of assembling, reduce labor intensity.Moreover, simple to operate, equipment cost is low, has higher economic benefit.Moreover, Both can individually carry out the horizontal lifting assembling of off-course brake and yaw brake disc, can also be used for horizontal lifting assembling and tilt or Vertical lifting assembling.

Although exemplary embodiment of the present utility model is described in detail above, those skilled in the art should manage Solution, in the case where not departing from principle of the present utility model and spirit, various modifications can be made to embodiment of the present utility model And deformation.It is understood that in the opinion of those skilled in the art, these modification and variation will fall into claim and be limited The scope of the utility model in.

Claims (10)

1. a kind of off-course brake mounting tool, it is characterised in that including support (7), the ring being arranged above the support (7) Shape bearing plate (8), the bearing plate (8) have multiple off-course brake placement regions, each off-course brake rest area Domain is provided with alignment pin (9) and formed with gap (81) or through hole, the distribution of the alignment pin (9) and the gap (81) or through hole It is corresponding with the installation pore size distribution on off-course brake mounting surface (2).

2. off-course brake mounting tool as claimed in claim 1, it is characterised in that the alignment pin (9) removably connects It is connected to the bearing plate (8).

3. off-course brake mounting tool as claimed in claim 2, it is characterised in that the alignment pin (9) is expansion pin.

4. off-course brake mounting tool as claimed any one in claims 1 to 3, it is characterised in that each driftage The quantity for the alignment pin (9) that brake placement region is arranged is two or more, and less than off-course brake (5) Hole number is installed.

5. off-course brake mounting tool as claimed in claim 1, it is characterised in that the off-course brake mounting tool is also Including multiple first supporting and limiting devices (101) being arranged on the outside of the bearing plate (8), first supporting and limiting device (101) the first rolling member (103) and baffle plate (104), first rolling member (103) and yaw brake disc (4) are included Bottom surface contacts and can support the yaw brake disc (4) rotation, the baffle plate (104) and the periphery of the yaw brake disc (4) Edge contacts.

6. off-course brake mounting tool as claimed in claim 5, it is characterised in that the off-course brake mounting tool is also Including multiple second supporting and limiting devices (102) being arranged on the outside of the bearing plate (8), second supporting and limiting device (102) the second rolling member (105) is included, second rolling member (105) and the outer peripheral edge of the yaw brake disc (4) connect Touch and can support the yaw brake disc (4) rotation.

7. off-course brake mounting tool as claimed in claim 1, it is characterised in that the off-course brake mounting tool is also Including multiple first supporting and limiting devices (101) and multiple second supporting and limiting devices being arranged on the outside of the bearing plate (8) (102), first supporting and limiting device (101) includes the first rolling member (103), first rolling member (103) with The bottom surface of yaw brake disc (4) is contacted to support the yaw brake disc (4) to rotate, second supporting and limiting device (102) Including the second rolling member (105), second rolling member (105) contacts simultaneously with the outer peripheral edge of the yaw brake disc (4) The sustainable yaw brake disc (4) rotates.

8. such as the off-course brake mounting tool any one of claim 1,5 to 7, it is characterised in that the driftage system Dynamic device mounting tool also includes the hanger (12) for being connected to the support (7) or the bearing plate (8).

9. off-course brake mounting tool as claimed in claim 8, it is characterised in that the off-course brake mounting tool is also The auxiliary safety device (11) of axial movement including limitation off-course brake (5) along the alignment pin (9).

A kind of 10. off-course brake mounting tool, it is characterised in that including support (7), be arranged above the support (7) and The multiple bearing plates separated each other, each bearing plate have at least one off-course brake placement region, each described inclined The brake placement region of navigating is provided with alignment pin (9) and formed with gap (81) or through hole, the alignment pin (9) and the gap (81) or through hole distribution it is corresponding with the installation pore size distribution on off-course brake mounting surface (2).