CN102152094B - Automobile brake drum disassembling and assembling machine - Google Patents
Automobile brake drum disassembling and assembling machine Download PDFInfo
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- CN102152094B CN102152094B CN 201110026601 CN201110026601A CN102152094B CN 102152094 B CN102152094 B CN 102152094B CN 201110026601 CN201110026601 CN 201110026601 CN 201110026601 A CN201110026601 A CN 201110026601A CN 102152094 B CN102152094 B CN 102152094B
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- brake drum
- fitted
- dismounting
- disassembling
- assembling
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Abstract
The invention provides an automobile brake drum disassembling and assembling machine, which mainly comprises a lifting work platform, a support seat, a disassembling and assembling screw, a hook screw and a disassembling and assembling roof rack, and has the following structural characteristics that: the lifting work platform is supported by a parallelogram connecting rod mechanism to a stander, so the lifting work platform can be in a horizontal position status when working at any altitude; by a lever type clamping mechanism consisting of a support rod and a support seat side arm hinged witha disassembling and assembling hook lever, the brake drum to be disassembled and assembled can be firmly clamped by a pull drum hook; and by a static roof pressure structure consisting of the disassembling and assembling screw and the disassembling and assembling roof rack, roof pressure formed by the disassembling and assembling screw can be converted into axial tensile force of the disassembling and assembling brake drum, and the operation of disassembling and assembling the brake drum can be convenient to finish. By the invention, the traditional beat and impact operation mode is radicallyabandoned; the disassembling and assembling machine has the remarkable advantages of low manufacture cost, convenience of assembling operation, short automobile repairing time, and low automobile repairing fee, and has strong practicability and extremely good market prospect in the automobile repairing industry.
Description
Technical field
The present invention relates to the auxiliary plant of auto repair, a kind of automobile brake drum changer particularly, its can light and fast, equipped operation task is dismantled to automobile brake drum in safety and nondestructive ground.
Background technology
We know, in order to ensure security performance, automobile all should be regularly after the regular period of travelling or not phase ground to brake apparatus carry out routine examination, maintenance and repair work.Brake drum is as a vitals of brake apparatus, and with regard to its structure function installation site, it is to be tight with on the hub spindle that tire is installed and the frictional resistance that utilizes friction plate to form carries out fast braking to the vehicle of running at high speed.In general, the Automobile Service industry is being carried out in the maintenance and repair process brake apparatus, the operation of dismounting brake drum be the most time-consuming, the operation extremely the trouble.Its main cause is: brake drum itself comparatively heaviness and dismounting operating position is again extremely short narrow.Up to now, existing Automobile Service industry all is to adopt manually to lift the mode of embracing and beaing the bump brake drum up and down and carry out the dismounting operation: at first lift car body with the jack top, backing out fastening nut again unloads tire and can expose the brake drum outer face that is tight with at hub spindle, the operator gets under the short narrow car body again, the bulging wall inner face that beats the bump brake drum along hub spindle repeatedly with sudden force makes its loosening withdrawing from, and beats also to need in addition in the process manually to lift up and down the brake drum of heaviness at continuous bump and armful just can finish field-strip.Unquestionable, workman's labour intensity in actual dismounting operating process is too big and time-consuming, and working environment is very abominable, exists serious equipment and personal safety hidden danger.Careless slightly in practical operation, also easily cause the accident that injures trick by a crashing object.And, the existing this operating type that manually beats bump dismounting brake drum, also very easily damage brake drum drum body and losing efficacy is scrapped, even do not damage the drum sub-assembly of parking brake body, also cause the assembling quality of fit of brake drum to descend easily, also will directly influence the skidding usefulness of automobile when serious.How could beat under the operating mode of bump light and fast safety and nondestructive ground dismounting brake drum and can guarantee the brake drum body and the intact performance of assembling quality of fit in nothing, this is a technical difficult problem that presses for solution that always perplexs the Automobile Service industry for a long time, and this also the present invention just wants the problem that solves.
Summary of the invention
Purpose of the present invention is intended to propose a kind of automobile brake drum changer, and its energy light and fast, safety and nondestructive ground carry out the dismounting operation to brake drum.
The objective of the invention is to realize as follows:
A kind of automobile brake drum changer, it comprises frame, the lift work platform, be installed on the supporting base of lift work platform, be fitted to the branch sleeve of supporting base, dismounting screw rod and the dismounting upper frame that is fitted to the dismounting screw rod, it is characterized in that: said lift work platform is supported on frame by the parallel rod connection, lifting screw is connected in the lifting shaft of parallel rod, be fitted with hook nut hook Screw rod bearings in branch sleeve, the other end that is hinged in the pole that hooks nut is articulated in the dismounting shank, the side arm of supporting base is hinged in the dismounting shank, and the dismounting shank is become by pole and the hinged leverage of supporting base side arm.It is performed such the operation of dismounting brake drum: the nut of backing out fastening tire earlier unloads doughnut, expose the brake drum that is tight with on the hub spindle, changer is pushed to the hub spindle axle head position that needs the dismounting brake drum, operate lifting screw and rotate parallel rod by lifting shaft, the operation height that can reposefully the regulation and control of lift work platform extremely be fit to, operation hooks screw rod and the bulging hook of drawing of dismounting shank is extended the brake drum back-end location and make the inside clamping of the bulging hook of drawing of dismounting shank hook the inner face of brake drum drum wall firmly again, operate again the dismounting screw rod make the dismounting upper frame that is fitted to the dismounting screw rod over against and withstand the hub spindle axial end.So far can buttress the handrail that is installed on frame, continuing gently to rotate the dismounting screw rod again makes the dismounting upper frame press closer the hub spindle axial end, along with constantly slowly rotating, the dismounting screw rod will form the roof pressure active force that increases gradually to the hub spindle axial end, meanwhile, frame can be subjected to corresponding opposition and be pushed slowly outer moving, the dismounting shank is when moving simultaneously with frame, the bulging hook that draws of dismounting shank will apply an outside pulling force that increases gradually to the brake drum inner face, brake drum can be drawn pine and moves outside slowly along the hub spindle axle head from hub spindle tight fit face and withdraw from, fall the lift work platform again and the brake drum of dismounting is positioned over ground reposefully can finishes the disassembling section operation.
The present invention also has following technical characterictic:
Said parallel rod respectively by last pivot pin, lower shaft pin be articulated in the lift work platform, frame constitutes the parallelogram connection-rod elevating mechanism, that is to say parallel rod is articulated in two last pivot pins of lift work platform respectively and is articulated in two lower shaft pins of frame as four hinge contacts of parallelogram connection-rod elevating mechanism, only need to rotate parallel rod by lifting screw and can regulate the lift work platform easily to the operation height that is fit to, and can guarantee the job state that the lift work platform is horizontal all the time.
The lifting nut hinge that matches with lifting screw is loaded on frame, and lifting nut can make the operation of regulating the lift work platform more light laborsaving from regulate the angle position that cooperates with lifting screw suitablely.
Said lifting screw is fitted in the lifting axle sleeve by dog screw, the lifting shaft cover is set in the lifting shaft of parallel rod, end face at the lifting axle sleeve is fitted with the flat bearing bearing, can reduce frictional resistance, makes the operation of regulating the lift work platform more free and relaxed.
Said dismounting upper frame has been done connecting bushing, the axle journal of dismounting screw rod is fitted in the connecting bushing by bolt, this structural design is specially adapted to change the requirement that the dismounting upper frame that is equipped with the use different specification size satisfies different automobile types, can widen the conformability to multiple vehicle effectively, end face at connecting bushing is fitted with plane bearing, this structural design also can reduce frictional resistance effectively, makes operation more easily laborsaving.
Said branch sleeve is to be fitted to supporting base with being threaded, threaded connection place at branch sleeve and supporting base is fitted with lock screw, it can prevent effectively that branch sleeve from the phenomenon of loose or dislocation taking place in the course of the work, can improve the reliable operation performance effectively.
The said sliding supporting axle core that is loaded on the dismounting screw rod of screw rod that hooks, hook screw rod and be supported on branch sleeve by lock nut locking connection, end face at lock nut is fitted with bearing, adopt the structural design of the supporting dress of this cunning, can make to hook screw rod and the dismounting screw rod is independent of each other and works alone, have compact conformation, equipped remarkable advantage easily, be fitted with bearing at the end face of lock nut, also be in order to reduce frictional resistance, to make it to regulate easily hooking screw rod as far as possible.
Being fitted with lock(ing) bolt at lock nut, is to move back the phenomenon of taking off in order to prevent that becoming flexible from appearring in lock nut, can improve the reliable operation performance effectively.
Be fitted with an armful drum arm at the bulging hook of drawing of dismounting shank, said armful of bulging arm is to be joined by the hinge hinge to be installed on the bulging hook of drawing of dismounting shank, can be according to the needs of actual dismounting operation, to embrace the drum arm around inwardly upset or outwards upset and place inboard or the outside of drawing bulging hook respectively of hinge, transposition is specially adapted to the brake drum of heavy truck is carried out the assembly manipulation operation when drawing bulging hook inboard in embracing the drum arm.
Said to draw bulging hook be to be connected by pin to be fitted to the dismounting shank and to constitute folding package assembly, and this structural design can make draws bulging hook to change in pin to be folded to dismounting shank inboard, can be convenient to playback when the not operation of this machine and to park.In addition, this structural design also is specially adapted to change the bulging hook that draws of assembling different length size, in order to can farthest satisfy the job requirements to different automobile types, expands the adaptive capacity to multiple vehicle effectively.
The present invention has following outstanding substantive distinguishing features and marked improvement:
1. the present invention has initiated by lifting screw and has driven the structural design that parallelogram linkage is regulated the lift work platform, can make the lift work platform can both remain the job state of horizontal level at arbitrary operation height.
2. the present invention has initiated by pole, the supporting base side arm is hinged forms the lever clamp mechanism in the dismounting shank, can make the bulging hook of drawing of dismounting shank inwardly clamp and hook firmly the inner face of brake drum drum wall, can effectively prevent from drawing drum to be hooked in drawing demolition unload brake drum and the operation process that outwards withdraws from the phenomenon that breaks off relations appears, this has key effect to the purpose that realizes light and fast safety and nondestructive ground dismounting brake drum.
3. the present invention has initiated the static roof pressure structure that is made of the dismounting screw rod that is fitted to supporting base and dismounting upper frame, the dismounting screw rod can be rotated formed roof pressure power and be converted to the axial external broach of dismantling brake drum, need not to beat just energy light and fast ground dismounting brake drum of bump, this does not have the integrity that undermines the assembling quality of fit to the brake drum body of guaranteeing to be disassembled and all has key effect.
4. the present invention has the remarkable advantage that structure is simple and direct, the manufacturing assembling is easy, easy for operation, strong in Automobile Service industry Practical Performance, to alleviating labor strength, improve the operation task environment, shorten the time that repairs, reducing the expense that repairs and all have positive effect.
Description of drawings:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the B-B sectional drawing of Fig. 1.
Description of symbols in the accompanying drawing:
1 is the dismounting upper frame, and 2 is bolt, and 3 is axle journal, and 4 is plane bearing, 5 is supporting base, and 6 are the dismounting screw rod, and 7 is lock screw, and 8 is branch sleeve, 9 is lock(ing) bolt, and 10 is bearing, and 11 for hooking nut, and 12 for hooking screw rod, 13 for hooking handwheel, and 14 are the dismounting handwheel, and 15 are the lifting handwheel, and 16 is handrail, 17 draw bulging hook, and 18 is slipmat, and 19 is brake drum, and 20 is hub spindle, 21 is positioning ring groove, and 22 is the lift work platform, and 23 is roller, and 24 is connecting bushing, 25,26 is last pivot pin, and 27 is lock nut, and 28 is connecting screw rod, 29 is the axle core, and 30 is parallel rod, and 31 is dog screw, 32 is lower shaft pin, and 33 are the lifting axle sleeve, and 34 is the flat bearing bearing, 35 is lifting screw, and 36 is lifting nut, and 37 is fixed connecting rod, 38 is detent, and 39 is lifting shaft, and 40 is lower shaft pin, 41 is frame, and 42 is parallel rod, and 43 is side arm, 44 is pole, and 45 is pin, and 46 are the dismounting shank, 47 for embracing the drum arm, and 48 is hinge, and 49 is arrow.
The specific embodiment:
Below in conjunction with accompanying drawing embodiments of the invention are described:
A kind of automobile brake drum changer that the present invention proposes, it is mainly by the frame 41 that roller 23 is housed, lift work platform 22, be installed on the supporting base 5 of lift work platform 22, dismounting screw rod 6 with 5 one-tenth threaded engagement of supporting base, branch sleeve 8, hooking screw rod 12 constitutes with the dismounting upper frame 1 that is fitted to dismounting screw rod 6, said lift work platform 22 is by last pivot pin 25,26, lower shaft pin 40,32 hinged parallel rods 30, the 42 parallelogram connection-rod elevating mechanisms that constitute are supported on frame 41, lifting shaft 39 at parallel rod 30 is set with lifting axle sleeve 33, the bottom of said lifting screw 35 is fitted in the lifting axle sleeve 33 by dog screw 31, the positioning head of dog screw 31 places in the detent 38 of lifting screw 35 and lifting screw 35 can be rotated in lifting axle sleeve 33, end face at lifting axle sleeve 33 is fitted with flat bearing bearing 34, can reduce frictional resistance effectively, cut with scissors the fixed connecting rod 37 that is loaded on frame 41 with the lifting nut 36 of 35 one-tenth threaded engagement of lifting screw, be fitted with lifting handwheel 15 on the top of lifting screw 35, said branch sleeve 8 is to be threaded to be fitted to supporting base 5, threaded connection place at branch sleeve 8 and supporting base 5 is fitted with lock screw 7, the said screw rod 12 that hooks has been made connecting screw rod 28, hook screw rod 12 and be the sliding supporting axle core 29 that is loaded on dismounting screw rod 6 and be connected and be supported on branch sleeve 8 by fitting over lock nut 27 lockings mutually with connecting screw rod 28, on lock nut 27, also be fitted with lock(ing) bolt 9, end face at lock nut 27 is fitted with bearing 10, hooking screw rod 12, the axle head of dismounting screw rod 6 is fitted with respectively and hooks handwheel 13, dismounting handwheel 14, be fitted to and hook hooking of screw rod 12 and be hinged with pole 44 on the nut 11, said pole 44 is hinged in the rear end of dismounting shank 46, the side arm 43 hinged middle parts in dismounting shank 46 of supporting base 5 constitute the lever clamp mechanism, said dismounting upper frame 1 has been done connecting bushing 24, the axle journal 3 of dismounting screw rod 6 is fitted in the connecting bushing 24 by bolt 2, the positioning head of bolt 2 places in the positioning ring groove 21 of axle journal 3, the axle journal 3 of dismounting screw rod 6 can be rotated in connecting bushing 24, also being fitted with plane bearing 4 at connecting bushing 24 end faces, is in order to reduce frictional resistance effectively.When needs were dismantled the operation of automobile brake drum, the first step: at first pull down one group of nut of fastening doughnut and unload tire, the brake drum 19 that is tight with on the hub spindle 20 is revealed, it was stand-by changer to be pushed into hub spindle 20 axle head positions again.Second step was the debugging preparation before dismantling: the handwheel of operation lifting earlier 15 drives lifting screw 35 and rotates, to push away for 33 times by the lifting axle sleeve that is set in lifting shaft 39 or on even up capable connecting rod 30 and rotate around lower shaft pin 32, can reposefully lift work platform 22 be regulated and control to suitable operation height by parallelogram linkage, and can make lift work platform 22 in lifting and field-strip overall process, remain the horizontal level state; Operation hooks handwheel 13 and drives and hook screw rod 12 and rotate to make and hook nut 11 move left and right again, can regulate the hinged angle of pole 44 and then pass dismounting shank 46 rear ends, can make the bulging hook 17 of drawing of dismounting shank 46 front ends inwardly clamp and hook firmly the inner face of brake drum 19; Operate dismounting handwheel 14 then and drive dismounting screw rods 6 and rotate, make dismounting upper frame 1 over against and withstand hub spindle 20 axial end.The 3rd step was formally to carry out field-strip: the handrail 16 of holding up steady frame 41 earlier, firmly dismounting handwheel 14 drive dismounting screw rods 6 rotations operated-slowly again, at this moment constantly slowly rotate dismounting screw rod 6 and will form the roof pressure active force that increases gradually by 1 pair of hub spindle 20 axial end of dismounting upper frame, because hooking the dismounting shank 46 of brake drum 19 inner faces is the side arms 43 that are connected in supporting base 5, and supporting base 5 is to be fixedly installed in lift work platform 22 and to pass through parallel rod 30,42 are supported on frame 41, when 6 pairs of hub spindle 20 axial end of rotation dismounting screw rod apply the roof pressure active force, frame 41 also will be subjected to corresponding opposition and be pushed slowly outer moving, dismounting shank 46 also will be along with frame 41 is moved simultaneously, the bulging hook 17 that draws of dismounting shank 46 will apply an axial external broach that increases gradually to brake drum 19 inner faces, the brake drum 19 that is enough to be tight with on the hub spindle 20 draws pine and slowly withdraws from hub spindle 20, so far namely finishes disassembling section.
Also can be at the bulging hook 17 equipped armful drum arms 47 that are lined with slipmat 18 of drawing of dismounting shank 46, said armful of bulging arm 47 is to be joined to be installed on by hinge 48 hinges to draw on the bulging hook 17, as shown in arrow 49, embrace that drum arm 47 can change around hinge 48 in or outside transfer to place respectively medial surface or the lateral surface that draws bulging hook 17, when being equipped with operation as the brake drum to heavy truck, can will embrace bulging arm 47 interior transposition in drawing bulging hook 17 inboards, hold brake drum 19 on the ground tightly by embracing drum arm 47, operation lifting handwheel 15 improves lift work platform 22,19 armfuls of brake drums can be lifted to hub spindle 20 axle head positions and be equipped with operation.
Saidly draw bulging hook 17 also can be connected by pin 45 to be fitted to dismounting shank 46 and to constitute collapsible package assembly, make and draw bulging hook 17 can in pin 45, change the inboard that is folded to dismounting shank 46, can be convenient to when not operation, place this machine, the bulging hook 17 of drawing of different length size that also is convenient to change the outfit carries out the demand of dismounting operation in order to adapting to not planting vehicle.
To be objective; above-described embodiment only is to realize one of mode of technical solution of the present invention; the scope of protection of present invention is not limited to above-described embodiment, also should comprise other embodiment that can be changed according to technical scheme of the present invention by those of ordinary skill in the art.
Claims (9)
1. automobile brake drum changer, it comprises frame (41), lift work platform (22), be installed on the supporting base (5) of lift work platform (22), be fitted to the branch sleeve (8) of supporting base (5), be fitted to the dismounting screw rod (6) of supporting base (5) and be fitted to the dismounting upper frame (1) of dismounting screw rod (6), it is characterized in that: said lift work platform (22) is by second parallel rod (30), first parallel rod (42) connection is supported on frame (41), lifting screw (35) is connected in the lifting shaft (39) of second parallel rod (30), be fitted with the screw rod (12) that hooks that hooks nut (11) and slide the supporting axle core (29) that is loaded on dismounting screw rod (6), hook screw rod (12) and be supported on branch sleeve (8) by lock nut (27) locking connection, end face at lock nut (27) is fitted with bearing (10), one end of pole (44) is hinged in and hooks nut (11), the other end of pole (44) is articulated in dismounting shank (46), and the side arm (43) of supporting base (5) is hinged in dismounting shank (46).
2. automobile brake drum changer according to claim 1 is characterized in that: said second parallel rod (30), first parallel rod (42) respectively by last pivot pin (25,26), lower shaft pin (40,32) be articulated in lift work platform (22), frame (41) constitutes the parallelogram connection-rod elevating mechanism.
3. automobile brake drum changer according to claim 1 and 2 is characterized in that: lifting nut (36) hinge that matches with lifting screw (35) is loaded on frame (41).
4. automobile brake drum changer according to claim 1 and 2, it is characterized in that: said lifting screw (35) is fitted in the lifting axle sleeve (33) by dog screw (31), lifting axle sleeve (33) is set in the lifting shaft (39) of second parallel rod (30), is fitted with flat bearing bearing (34) at the end face of lifting axle sleeve (33).
5. automobile brake drum changer according to claim 1 and 2, it is characterized in that: said dismounting upper frame (1) has been done connecting bushing (24), the axle journal (3) of dismounting screw rod (6) is fitted in the connecting bushing (24) by bolt (2), is fitted with plane bearing (4) at the end face of connecting bushing (24).
6. automobile brake drum changer according to claim 1 and 2, it is characterized in that: said branch sleeve (8) is to be fitted to supporting base (5) with being threaded, and is fitted with lock screw (7) in the threaded connection place of branch sleeve (8) and supporting base (5).
7. automobile brake drum changer according to claim 1 and 2 is characterized in that: be fitted with lock(ing) bolt (9) at lock nut (27).
8. automobile brake drum changer according to claim 1 and 2 is characterized in that: draw bulging hook (17) to be fitted with to embrace a drum arm (47) at dismounting shank (46).
9. automobile brake drum changer according to claim 8 is characterized in that: the said bulging hook (17) that draws is to be connected by pin (45) to be fitted to dismounting shank (46) and to constitute folding package assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110026601 CN102152094B (en) | 2011-01-25 | 2011-01-25 | Automobile brake drum disassembling and assembling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110026601 CN102152094B (en) | 2011-01-25 | 2011-01-25 | Automobile brake drum disassembling and assembling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102152094A CN102152094A (en) | 2011-08-17 |
| CN102152094B true CN102152094B (en) | 2013-09-04 |
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ID=44433941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110026601 Expired - Fee Related CN102152094B (en) | 2011-01-25 | 2011-01-25 | Automobile brake drum disassembling and assembling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102152094B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009046B (en) * | 2012-12-11 | 2015-06-10 | 乐山市新欣机械制造有限公司 | Special device for quickly disassembling automobile braking drum |
| CN105269515B (en) * | 2015-10-23 | 2018-01-09 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of inner ring obturages plate decomposer and method |
| CN109263407B (en) * | 2018-10-19 | 2022-03-29 | 迈泽锐(武汉)工业技术有限公司 | Automobile hub production equipment and process thereof |
| CN115781255B (en) * | 2023-02-02 | 2023-04-11 | 昆明旅游索道开发有限责任公司 | Dismounting device for supporting cable wheel lining |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2144458C1 (en) * | 1997-04-14 | 2000-01-20 | Пивоваров Павел Евдокимович | Method of and device for removing passenger car brake drum |
| US7032280B1 (en) * | 2005-06-02 | 2006-04-25 | The Lisle Corporation | Single brake spring tool and method |
| CN201442167U (en) * | 2009-05-08 | 2010-04-28 | 中国石化股份胜利油田分公司孤岛采油厂 | Special work automobile brake drum fast-disassembling device |
| CN201625860U (en) * | 2010-04-06 | 2010-11-10 | 广州铁路职业技术学院 | Auxiliary assembly and disassembly service cart for engineering vehicle unit brakes |
| CN201979264U (en) * | 2011-01-25 | 2011-09-21 | 曾柏林 | Automobile drum brake detacher |
-
2011
- 2011-01-25 CN CN 201110026601 patent/CN102152094B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2144458C1 (en) * | 1997-04-14 | 2000-01-20 | Пивоваров Павел Евдокимович | Method of and device for removing passenger car brake drum |
| US7032280B1 (en) * | 2005-06-02 | 2006-04-25 | The Lisle Corporation | Single brake spring tool and method |
| CN201442167U (en) * | 2009-05-08 | 2010-04-28 | 中国石化股份胜利油田分公司孤岛采油厂 | Special work automobile brake drum fast-disassembling device |
| CN201625860U (en) * | 2010-04-06 | 2010-11-10 | 广州铁路职业技术学院 | Auxiliary assembly and disassembly service cart for engineering vehicle unit brakes |
| CN201979264U (en) * | 2011-01-25 | 2011-09-21 | 曾柏林 | Automobile drum brake detacher |
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| CN102152094A (en) | 2011-08-17 |
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