CN202054033U - Bidirectional stretching brake shoe gap adjuster - Google Patents
Bidirectional stretching brake shoe gap adjuster Download PDFInfo
- Publication number
- CN202054033U CN202054033U CN 201020629641 CN201020629641U CN202054033U CN 202054033 U CN202054033 U CN 202054033U CN 201020629641 CN201020629641 CN 201020629641 CN 201020629641 U CN201020629641 U CN 201020629641U CN 202054033 U CN202054033 U CN 202054033U
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- China
- Prior art keywords
- screw rod
- nut
- head
- protecgulum
- screw
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- Expired - Lifetime
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Abstract
The utility model discloses a bidirectional stretching brake shoe gap adjuster including a protecting tube, a front cover, a cylindrical body and a rear cover that are successively connected. A guiding nut and an adjusting nut are arranged in the front cover and the cylinder body, springs are arranged at the two sides of the adjusting nut, the guiding nut and the adjusting nut are controlled through the clutches thereof, when one of the nuts rotates, the other one is locked on a screw rod to stay still; the pull rod and a control rod head are connected to the pull rod head, and the control rod head is connected to the control rod; the screw rod is penetrated in the protecting tube, the front cover, and the cylindrical body, the threaded section of the screw rod is connected to the guiding nut, the adjusting nut and the pull rod, and the polished rod end part of the screw rod is connected the head of a rear pull rod; The adjuster provided is compact in structure and can automatically adjust the piston stroke of a braking cylinder to achieve a normal gap, thereby effectively ensuring driving safety; moreover, the piston stroke of the braking cylinder automatically stays the same to reduce the compact of trains; in addition, the adjuster provided accelerates the turnover of an automobile and improves the transportation efficiency.
Description
Technical field
The utility model relates to a kind of rail freight mechanical biaxial tension brake slack adjuster, is used for the rail freight field.
Background technology
Brake cylinder is one of critical component in the railway truck brake equipment, and for the vehicle of piston travel overlength, its braking force will reduce, and lags behind with respect to the normal car brakeing of other piston stroke simultaneously; For the too short vehicle of brake piston stroke, its braking force will increase, with respect to the normal car brakeing of other piston stroke in advance simultaneously.How keeping piston travel is very important in the scope of a relative close tolerance, otherwise the longitudinal impact force can't accurately control train braking the time, even lead to the train traffic safety accident.
The piston travel overlength or too short mainly be because the brake clearance in the brake equipment strengthens than normal value or reduces and cause, and the correction of brake clearance depends on brake slack adjuster.At present, the existing two kinds of biaxial tension brake slack adjusters of China are: the two-way brake slack adjuster of ST1-600 type, and it is installed on the top rod place of foundation brake rigging, and adjustment amount is 600mm; The two-way brake slack adjuster of ST2-250 type, it is installed on the cylinder lever connecting rod place of foundation brake rigging, and adjustment amount is 250mm.
The utility model content
The purpose of this utility model is, a kind of compact conformation is provided, can automatically adjusts piston travel and reach normal clearance, makes piston travel keep within the limits prescribed biaxial tension brake slack adjuster.
The purpose of this utility model realizes by adopting following technical scheme:
A kind of biaxial tension brake slack adjuster comprises pillar, protecgulum, cylindrical shell, bonnet, guiding nut, adjustment nut, pull bar, control stalk head, drawhead and control stalk, back stay head and screw rod;
A. an end of described cylindrical shell is connected with bonnet, and the other end and protecgulum are by being threaded, and an end of described protecgulum is connected with pillar, and the other end of described pillar is captiveed joint with the pillar head;
B. the middle part in the described cylindrical shell is provided with sleeve body, is provided with movable sleeve in the sleeve body, is provided with the pull bar termination in the movable sleeve, and pull bar termination and pull bar are by being threaded, and the other end of pull bar is connected with the control stalk head with drawhead, and the control stalk head is connected with control stalk;
C. described adjustment nut is arranged in the sleeve body, gap between sleeve body and the adjustment nut is δ 2, the adjustment nut both sides are provided with spring, tapered of adjustment nut boss both sides of the edge, two internal conical surfaces are formed power-transfer clutch b and power-transfer clutch c on conical suface and sleeve body and the movable sleeve, and an end of sleeve body and socket cover are by being threaded, and the gap between socket cover and the movable sleeve is δ 3, the socket cover outside is provided with circular conical surface, and the conical suface of circular conical surface and clutch-plate is formed power-transfer clutch d;
D. described guiding nut is arranged in the protecgulum, a power-transfer clutch a is formed in the inner cone tooth of described protecgulum and the engagement of the outer cone tooth on the guiding nut or disengagement, the guiding nut boss is provided with the guiding nut spring case, and guiding nut spring case and the gap that is arranged between the interior circlip for bore of protecgulum are δ 1;
E. described screw rod is in pillar, protecgulum and cylindrical shell, the polished rod section of screw rod is provided with groove, groove on the screw rod polished rod section is concordant with the pillar end surface, polished rod section end is connected with the back stay head, the screw flight section screws in guiding nut earlier, screw in adjustment nut and pull bar again, screw flight section end is connected with the anticreep screw.
The screw thread of described screw rod and adjustment nut is the non-self-locking thread of bull.
The non-self-locking thread of described bull is the Acme thread of four statures.
Described bonnet right side is the plane.
Described movable sleeve drum wall is provided with a guide groove, and the guider screw on described guide groove and the sleeve body is connected.
Described socket cover inboard also is provided with holddown spring.
Owing to adopted technique scheme, the beneficial effects of the utility model are:
Can piston travel be kept within the limits prescribed according to the variation of brake clearance, keep the gap of brake shoe and wheel normal, guarantee that car brakeing power is unattenuated, guarantee traffic safety effectively; Can make that each vehicle braked cylinder piston stroke automatically is consistent in the train, reduce vertical dynamic action of train, the impact of train is reduced; Can alleviate the manual labor of row inspection staff manual setting piston travel greatly, shorten the time that row are examined the technical operation that stops, thereby the accelerating vehicle turnover improve conveying efficiency.
Description of drawings
Fig. 1 is the utility model structural representation.
Reference numeral: the 1st, screw rod, the 2nd, pillar, the 3rd, rubber seal, the 4th, protecgulum, the 5th, guiding nut, the 6th, guiding nut spring case, the 7th, guiding nut spring, the 8th, cover entire body, the 9th, adjustment nut, the 10th, guider screw, the 11st, movable sleeve, the 12nd, elastic cylindrical pin, the 13rd, holddown spring, the 14th, socket cover, the 15th, little elastic cylindrical pin, the 16th, clutch-plate, the 17th, cylindrical shell, the 18th, main spring, the 19th, seal ring, the 20th, bonnet, the 21st, pull bar, the 22nd, anticreep screw, the 23rd, control stalk head, the 24th, drawhead, the 25th, screw, the 26th, control stalk, the 27th, main spring seat, the 28th, thrust ball bearing, the 29th, circlip for shaft, the 30th, pull bar termination, the 31st, little spring, the 32nd, submissile spring abutment, the 33rd, low thrust ball-bearing casing, the 34th, circlip for bore, the 35th, tightening screw, the 36th, external tooth spring washer, the 37th, high thrust ball-bearing casing, the 38th, packing ring, the 39th, aperture circlip, the 40th, pillar head, the 41st, small sealing ring, the 42nd, Screw, the 43rd, back stay head.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, a kind of biaxial tension brake slack adjuster comprises screw rod 1, pillar 2, guiding nut 5, adjustment nut 9, cylindrical shell 17, protecgulum 4, bonnet 20, pull bar 21, drawhead 24, back stay head 43, control stalk head 23, control stalk 26.
One end of cylindrical shell 17 is pressed with the bonnet 20 of band seal ring 19, and the other end is equipped with protecgulum 4, and protecgulum 4 is connected with cylindrical shell 17 by screw thread and is fixing with tightening screw 35 and external tooth spring washer 36.One end of protecgulum 4 is equipped with pillar 2, and rubber seal 3, packing ring 38 and fixing with circlip 39 with aperture are installed on the pillar 2.One end of pillar 2 and pillar head 40 be connected by assembly welding, small sealing ring 41 is housed in the pillar head 40.Protecgulum 4 inboards are provided with 60 inner cone teeth, 60 outer cone teeth engagements on itself and the guiding nut 5 or throw off and form a power-transfer clutch a.On guiding nut 5 boss high thrust ball-bearing casing 37 is housed, high thrust ball-bearing casing 37 contacts with guiding nut spring case 6, and guiding nut spring 7 is housed in the guiding nut spring case 6.Protecgulum 4 right-hand members are equipped with circlip for bore 34, and the gap between circlip for bore 34 and the guiding nut spring case 6 is δ 1.
The middle part is provided with sleeve body 8 in the cylindrical shell 17, and movable sleeve 11 is housed in the sleeve body 8, and movable sleeve 11 drum walls are provided with a guide groove, and make the guider screw of fixing on the sleeve body 8 10 can only do front and back and slide together with cylindrical shell 17, and can not be around movable sleeve 11 rotations.Pull bar termination 30 is installed in the movable sleeve 11, and pull bar termination 30 is connected with pull bar 21 by screw thread and is fixing with elastic cylindrical pin 12.Be provided with adjustment nut 9 in the sleeve body 8, the gap between sleeve body 8 and the adjustment nut 9 is δ 2, and conical suface is made at edge, the adjustment nut 9 boss left and right sides, and two internal conical surfaces are formed power-transfer clutch b and power-transfer clutch c on conical suface and sleeve body 8 and the movable sleeve 11.Adjustment nut 9 boss right sides are provided with low thrust ball-bearing casing 33, submissile spring abutment 32 and little spring 31.Sleeve body 8 right-hand members and socket cover 14 are by being threaded and fixing with little elastic cylindrical pin 15, and the gap between socket cover 14 and the movable sleeve 11 is δ 3, and socket cover 14 outsides are provided with circular conical surface, the circular conical surface composition power-transfer clutch d that matches with clutch-plate 16 conical sufaces.Clutch-plate 16 right sides are provided with circlip for shaft 29, socket cover 14 inboards also are provided with holddown spring 13, under the effect of holddown spring power, movable sleeve 11 is remained with pull bar termination 30 contact, can avoid being subjected to vibration and impact to cause the utility model impaired or botch routines.Axle mounting circlip 29 on pull bar 21, right side are equipped with thrust ball bearing 28, main spring seat 27 and main spring 18.Pull bar 21 right-hand members are equipped with control stalk head 23 and drawhead 24, and control stalk head 23 is connected with control stalk 26, and fixing by screw 25.
In the utility model, screw rod 1 right-hand member has the extraordinary Acme thread that is processed into four statures, and external diameter is φ 30mm, and helical pitch is 28mm, belongs to non-self-locking thread.Screw rod 1 left end is cylindrical polished rod, is carved with a circle groove above, is the markings of screw rod usable length.Screw rod 1 puts in from pillar 2, screws in guiding nut 5 earlier by protecgulum 4, screws in adjustment nut 9 again, is screwed into till the groove and the 40 end face snaps of pillar head on the screw rod always.For prevent that screw rod 1 from deviating from from adjustment nut 9, anticreep screw 22 is housed at screw rod 1 right-hand member.Screw rod 1 left end is equipped with back stay head 43, uses Screw 42 fixing.Bonnet 20 right sides are the plane, contact with control stalk head 23 in the adjuster motion process, stressedly rotary cylinder body 17 are stopped the rotation when big as it, play the effect of power-transfer clutch.
Main technical details of the present utility model is as shown in table 1:
Table 1
| The maximum Fan Wei ∕ mm that adjusts | 500 |
| The maximum La Li ∕ kN that allows | 78.4 |
| The mode of action | Biaxial tension |
| The installation site | The cylinder lever connecting rod place |
| The Chang Du ∕ mm of maximum installation | 2151 |
| Contract to the Zui Chang Du ∕ of Duan mm | 1651 |
| Once maximum Suo Duan Liang ∕ mm | 135 |
| A maximum elongation amount ∕ mm | 30 |
| Lock is transferred this body weight of device ∕ kg | 44 |
| The hand adjustment function | Have |
The utility model is installed on the cylinder lever connecting rod place of foundation brake rigging, and three basic roles during its work are summarized as follows:
(1) when brake shoe and wheel gap just often, the utility model power transmission and not adjusting.This be because, when brake shoe contacted with wheel, what control stalk head 23 was moved to the left and cylindrical shell 17 moves right was the A value apart from sum, control stalk head 23 just in time contacts with cylindrical shell 17, screw rod 1 usable length does not change.
(2) when brake shoe and wheel gap during greater than normal clearance, screw rod 1 usable length will shorten to recover brake shoe normal clearance.This be because, brake shoe is with before wheel contact, control stalk head 23 is promptly run into cylindrical shell 17 mutually, control stalk head 23 can be pushed cylindrical shell 17 to left then, makes in the screw rod 1 retraction pillar 2, adjustment nut 9 moves to commentaries on classics limit, the left side along screw rod 1 at this moment.Brake shoe is during by last wheel, and control stalk head 23 will be greater than the A value with cylindrical shell 17 miles of relative movement sums.
When (3) brake shoe and wheel gap are less than normal clearance after more renewing brake shoe, screw rod 1 usable length will increase to recover brake shoe normal clearance.This be because, when brake shoe contacted with wheel, control stalk head 23 and cylindrical shell 17 were not also run into, promptly both miles of relative movement sums are less than the A value.Cylindrical shell 17 turns right to move with control stalk head 23 at the effect backspin of main spring 18 and contacts, and screw rod 1 is stretched out in pillar 2, and adjustment nut 9 changeed the limit along screw rod 1 to the right and moved this moment.
This device essential structure principle is equivalent to " pull bar " that can stretch automatically, makes two-section and is nested together, and makes screw rod for one section, and another section made hollow " pull bar " of an end tape frame, and the centre connects with adjustment nut.If the rotation adjustment nut, " pull bar " will elongate or shorten because of hand of rotation is different.Precompressed spring will all be loaded onto in order to make its " automatic compensation " before and after the adjustment nut, and the screw thread of screw rod and adjustment nut made " the non-self-locking thread of bull ", spring could promote adjustment nut and rotate forward or backward, and " pull bar " elongated or shortened.This device is provided with guiding nut, its objective is direction and distance in order to guide adjustment nut to move.Guiding nut and adjustment nut are all controlled by their power-transfer clutch, and when a rotation was arranged in them, another must be locked on the screw rod motionless.
Therefore, this biaxial tension brake slack adjuster can automatically make piston travel keep within the limits prescribed according to the variation of brake clearance, keeps the gap of brake shoe and wheel normal, guarantees that car brakeing power is unattenuated, guarantees traffic safety effectively; Can make that each vehicle braked cylinder piston stroke automatically is consistent in the train, reduce vertical dynamic action of train, the impact of train is reduced; Can alleviate the manual labor of row inspection staff manual setting piston travel greatly, shorten the time that row are examined the technical operation that stops, thereby the accelerating vehicle turnover improve conveying efficiency.
Claims (6)
1. biaxial tension brake slack adjuster, comprise pillar (2), protecgulum (4), cylindrical shell (17), bonnet (20), guiding nut (5), adjustment nut (9), pull bar (21), control stalk head (23), drawhead (24), control stalk (26), back stay head (43) and screw rod (1), it is characterized in that
One end of A. described cylindrical shell (17) is connected with bonnet (20), and the other end and protecgulum (4) are by being threaded, and an end of described protecgulum (4) is connected with pillar (2), and the other end of described pillar (2) is captiveed joint with pillar head (40);
B. the middle part in the described cylindrical shell (17) is provided with sleeve body (8), be provided with movable sleeve (11) in the sleeve body (8), be provided with pull bar termination (30) in the movable sleeve (11), pull bar termination (30) and pull bar (21) are by being threaded, the other end of pull bar (21) is connected with control stalk head (23) with drawhead (24), and control stalk head (23) is connected with control stalk (26);
C. described adjustment nut (9) is arranged in the sleeve body (8), gap between sleeve body (8) and the adjustment nut (9) is δ 2, adjustment nut (9) both sides are provided with spring, tapered of adjustment nut (9) boss both sides of the edge, last two internal conical surfaces of conical suface and sleeve body (8) and movable sleeve (11) are formed power-transfer clutch b and power-transfer clutch c, one end of sleeve body (8) and socket cover (14) are by being threaded, gap between socket cover (14) and the movable sleeve (11) is δ 3, socket cover (14) outside is provided with circular conical surface, and the conical suface of circular conical surface and clutch-plate (16) is formed power-transfer clutch d;
D. described guiding nut (5) is arranged in the protecgulum (4), a power-transfer clutch a is formed in engagement of outer cone tooth or disengagement on the inner cone tooth of described protecgulum (4) and the guiding nut (5), guiding nut (5) boss is provided with guiding nut spring case (6), and guiding nut spring case (6) and the gap that is arranged between the interior circlip for bore (34) of protecgulum (4) are δ 1;
E. described screw rod (1) is in pillar (2), protecgulum (4) and cylindrical shell (17), the polished rod section of screw rod (1) is provided with groove, groove on the screw rod polished rod section is concordant with pillar head (40) end face, polished rod section end is connected with back stay head (43), the thread segment of screw rod (1) screws in guiding nut (5) earlier, screw in adjustment nut (9) and pull bar (21) again, screw rod (1) thread segment end is connected with anticreep screw (22).
2. biaxial tension brake slack adjuster according to claim 1 is characterized in that, the screw thread of described screw rod (1) and adjustment nut (9) is the non-self-locking thread of bull.
3. biaxial tension brake slack adjuster according to claim 2 is characterized in that, the non-self-locking thread of described bull is the Acme thread of four statures.
4. biaxial tension brake slack adjuster according to claim 1 is characterized in that, described bonnet (20) right side is the plane.
5. biaxial tension brake slack adjuster according to claim 1 is characterized in that, described movable sleeve (11) drum wall is provided with a guide groove, and the guider screw (10) on described guide groove and the sleeve body (8) is connected.
6. biaxial tension brake slack adjuster according to claim 1 is characterized in that, described socket cover (14) inboard also is provided with holddown spring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020629641 CN202054033U (en) | 2010-11-29 | 2010-11-29 | Bidirectional stretching brake shoe gap adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020629641 CN202054033U (en) | 2010-11-29 | 2010-11-29 | Bidirectional stretching brake shoe gap adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202054033U true CN202054033U (en) | 2011-11-30 |
Family
ID=45014016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020629641 Expired - Lifetime CN202054033U (en) | 2010-11-29 | 2010-11-29 | Bidirectional stretching brake shoe gap adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202054033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106573631A (en) * | 2014-08-04 | 2017-04-19 | 纽约气闸有限公司 | Slack adjuster environmental improvements |
| CN108387371A (en) * | 2018-03-09 | 2018-08-10 | 中车贵阳车辆有限公司 | A kind of lock tune device rear cover loosens detecting tool and its application method |
-
2010
- 2010-11-29 CN CN 201020629641 patent/CN202054033U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106573631A (en) * | 2014-08-04 | 2017-04-19 | 纽约气闸有限公司 | Slack adjuster environmental improvements |
| CN106573631B (en) * | 2014-08-04 | 2019-03-26 | 纽约气闸有限公司 | The slack adjuster of environmental improvement |
| CN108387371A (en) * | 2018-03-09 | 2018-08-10 | 中车贵阳车辆有限公司 | A kind of lock tune device rear cover loosens detecting tool and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 620010 Meishan City, Sichuan province science and Technology Industrial Park Road business center room 206 Patentee after: Meisha Zhongke Brake Technology Co., Ltd. Address before: 620010 Meishan City, Sichuan province science and Technology Industrial Park Road business center room 206 Patentee before: Sichuan Brake Science and Technology Co. Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |