CN207710673U

CN207710673U - The disassembling tool of bolt bush structure

Info

Publication number: CN207710673U
Application number: CN201721711861.6U
Authority: CN
Inventors: 杨洋; 牛孝霞; 卢鑫
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2018-08-10
Anticipated expiration: 2027-12-11

Abstract

The utility model is related to disassembly of fastener technical fields, specifically provide the disassembling tool of bolt bush structure, tooling uses helicitic texture transmitting forces, operator is by rotating boosting nut, push axle sleeve, and then it shrinks clamping bar cramp and takes bushing, it is rotated further promotion nut, clamping bar clamps bushing and is axially moved, it is final to realize that bushing decomposes, the setting of the disassembling tool, so that operator only needs to apply smaller torque, sufficiently large decomposing force can be provided, clamping force can also be provided for gripping bushing simultaneously, greatly reduce original simple operation labor intensity for by manpower lever up decomposition, it improves and decomposes success rate.

Description

The disassembling tool of bolt bush structure

Technical field

The utility model is related to disassembly of fastener technical fields, the more particularly to disassembling tool of bolt bush structure.

Background technology

In certain bolt fastening structures, limited by engine parts structure, to ensure that bolt is smoothly installed, engine machine The diameter of bolt hole size of part usually more greatly compared with the diameter of bolt, adds bushing with radially fixed bolt between the two.When decomposing bushing, Since itself and bolt are interference fit, can effect partial it is again very short and small, therefore operate very difficult.Existing decomposition method is to use The gap that normal screws knife extend into bushing and engine parts carries out levering up decomposition, the feelings under can not dividing not only often occurs Condition, and be easy that engine surface of the work is caused to scratch.Therefore, there is an urgent need for a kind of safe and reliable tooling devices, to realize bushing Decomposition.

Existing decomposition technique, which relies solely on normal screws knife and extend into the gaps of bushing and engine parts, lever up point Solution includes mainly following disadvantage：

1, due to being levered up by manpower merely, decomposing force is difficult to match with tightness, and scene often occurs can not Situation under point；

2, it contacts, and is acted on for single-point, engine parts unbalance stress for wedge angle between tool and engine parts, bushing, Easily cause the damage of engine surface of the work, deformation；

3, working efficiency is low, decomposes a bushing and generally requires repeated multiple times operation, and serious restrict decomposes the period.

Utility model content

To overcome above-mentioned at least one defect of the existing technology, the utility model to provide point of bolt bush structure Tooling is solved, including：

Clamping bar, one end end have outwardly extending multiple claws, and the end of the claw is provided with groove, free shape The internal diameter of the end of the multiple claw under state is more than the diameter of bolt bush, the groove fishbolt under contraction state Bushing；

The boosting nut being sheathed on outside the clamping bar, is threadedly coupled between the clamping bar；

The axle sleeve being sheathed on outside the clamping bar, the clamping bar axis described in the rotary action lower edge of the boosting nut To sliding.

Preferably, it is in groove-like that the clamping bar outer wall, which has side plane, the side plane, and screw thread is provided on the axle sleeve Hole, the threaded hole is interior to be equipped with anti-turn screw, and the stud bottom surface of the anti-turn screw squeezes the side plane.For preventing from clamping Relative rotation is generated between bar 10 and axle sleeve 30.

Preferably, for the clamping bar tool there are six claw, six claws are circumferentially distributed in the clamping boom end.

The disassembling tool of bolt bush structure provided by the utility model, has the advantages that：

1, using the resilient characteristic of claw structure, cleverly by the diameter dimension structure change under its different stress Realize tooling gripping parts action；

2, it avoids and is sharply contacted existing for existing decomposition technique, whole operation process is not damaged to parts, the mode of action Securely and reliably；

3, the setting of the gearing mechanism so that operator only needs to apply smaller torque, you can provides sufficiently large point Xie Li, while clamping force can also be provided for gripping bushing, greatly reduce original simple behaviour for by manpower lever up decomposition Make labor intensity, improves and decompose success rate.

Description of the drawings

It is exemplary below with reference to the embodiment of attached drawing description, it is intended to it is used for explanation and illustration the utility model, without It can be interpreted as the limitation to the scope of protection of the utility model.

Fig. 1 is a quarter sectional view of the disassembling tool of bolt bush structure provided by the utility model；

Fig. 2-1 is the structural schematic diagram of clamping bar in Fig. 1；

Fig. 2-2 is the force diagram of clamping bar in Fig. 1；

Fig. 3 is the structural schematic diagram of boosting nut in Fig. 1；

Fig. 4 is the structural schematic diagram of Fig. 1 bottom bracket axles；

Fig. 5 is the structural schematic diagram of anti-turn screw in Fig. 1；

Fig. 6-1 is the full sectional view of the installation condition of bolt bush structure provided by the utility model；

Fig. 6-2 is the full sectional view of the clamped condition of bolt bush structure provided by the utility model；

Fig. 6-3 is the full sectional view for removing state of bolt bush structure provided by the utility model.

Reference numeral：

10 clamping bars

11 claws

12 grooves

13 side planes

20 boosting nuts

30 axle sleeves

40 anti-turn screws

91 bolt bushes

92 bolts

93 engine parts

Specific implementation mode

To keep the purpose, technical scheme and advantage that the utility model is implemented clearer, below in conjunction with the utility model Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.

It should be noted that：In the accompanying drawings, from beginning to end same or similar label indicate same or similar element or Element with the same or similar functions.Described embodiment is the utility model a part of the embodiment, rather than whole Embodiment, in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.Based on this reality With the embodiment in novel, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality The limitation of novel protected range.

Herein, " schematic " expression " serving as example, example or explanation " should not will be described herein as " showing Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical solution.

The a quarter sectional view of the disassembling tool of bolt bush structure provided by the utility model is as shown in Figure 1, this point It includes clamping bar 10, boosting nut 20 and axle sleeve 30 to solve tooling.Boosting nut 20 is sheathed on outside clamping bar 10, and axle sleeve 30 is arranged Outside clamping bar 10.

Respectively as shown in Fig. 2-1 and Fig. 2-2,10 one end end of clamping bar has the structural schematic diagram and force diagram of clamping bar 10 There are the identical claw 11 of outwardly extending multiple length, the end of claw 11 to be provided with groove 12, multiple claws under free state The internal diameter of 11 end is more than the diameter of bolt bush 91, i.e. six pawl spreadings, six pawls may contract to certain size under contraction state State, and pass through 12 fishbolt bushing 91 of groove.Clamping bar 10 is the direct actuating member of tooling, it inputs boosting nut 30 Decomposing force F is transferred directly to bolt bush 91.The claw 11 of clamping bar 10 has certain elastic mobility.In the present embodiment, There are six claws 11 for the tool of clamping bar 10, are in hexa-claw shape formula, six claws 11 are circumferential to be distributed in 10 end of clamping bar.

The structural schematic diagram of boosting nut 20 between boosting nut 20 and clamping bar 10 as shown in figure 3, be threadedly coupled.Boosting Nut 20 is equipped with helicitic texture between power input, with clamping bar 10, and initial stage rotates boosting nut 20, can push 30 edge of axle sleeve Clamping bar 10 axially moves, and waits for that axle sleeve 30 moves to 93 rear end face of engine parts, is rotated further boosting nut 20, clamping bar Fishbolt bushing 91 is moved to realize that bolt bush 91 decomposes by 10 along the direction far from engine parts 93.

The structural schematic diagram of axle sleeve 30 as shown in figure 4, axle sleeve 30 under the rotary action of boosting nut 20 along clamping bar 10 It slides axially.Axle sleeve 30 mainly plays two during tooling use：First, not moving to engine parts in axle sleeve 30 When 93 end face, axle sleeve 30 plays tightening to clamping bar 10, and axle sleeve 30 is directed at the tightening of clamping bar 10 while being axially moved, clamps The claw diameter of movement size of bar 10 more becomes smaller final fishbolt bushing 91 completely；Second is that moving to engine in axle sleeve 30 When 93 end face of parts, continue to rotate boosting nut 20, boosting nut 20 cannot continue to be axially moved, therefore clamping bar 10 will be with Bolt bush 91 starts to move along far from 93 direction of engine parts, at this point, axle sleeve 30 plays the role of avoiding applying load directly In the double action of engine parts 93 and spacer sleeve.

In the present embodiment, it is in groove-like that 10 outer wall of clamping bar, which has side plane 13, side plane 13, and screw thread is provided on axle sleeve 30 Hole, is equipped with anti-turn screw 40 in threaded hole, the structural schematic diagram of anti-turn screw 40 as shown in figure 5, anti-turn screw 40 stud bottom Face squeezes side plane 13.For preventing from generating relative rotation between clamping bar 10 and axle sleeve 30.Anti-turn screw 40 is screwed into from outside Across axle sleeve 30, bottom face is snug against the side plane 13 in 10 middle part cylinder of clamping bar, to prevent axle sleeve 30 and clamping bar 10 Between relative rotation.Therefore when rotation boosting nut 20, as long as clamping axle sleeve 30 ensures that axle sleeve 30 does not turn, clamping bar 10 does not also turn It is dynamic, and boosting nut 20 then relies on the screw drive structure between clamping bar 10, displacement to axial can occur along clamping bar 10.

The operation principle of the disassembling tool of bolt bush structure provided by the utility model is first as shown in Fig. 6-1 to Fig. 6-3 30 front end face of axle sleeve is first exited into 10 front end face a distance of clamping bar, the claw 11 of clamping bar 10 is enabled to be in spreading state and true The internal diameter size of claw 11 is more than cylinder outer diameter after bolt bush 91 after guarantor's spreading, after claw 11 is then passed through bolt bush 91 Boss is held, 93 rear end face of its front end face contact engine parts is enabled, 91 boss of bolt bush should be at alignment clamping bar 10 at this time 12 position of groove state；Smooth rotation boosting nut 20 pushes axle sleeve 30 moved axially forward along clamping bar 10, until axis It covers 30 front end faces and is adjacent to 93 rear end face of engine parts, at this time the 11 complete clamping projections of claw of clamping bar 10；It is rotated further and helps Push nut 20, since axle sleeve 30 can not continue axially forward, 10 fishbolt bushing 91 of clamping bar starts reversely to be axially moved straight It is detached to bolt bush 91 with bolt 92, finally removes bolt bush 91.According to scene statistics on probation, carried using the utility model The disassembling tool of confession carries out bushing decomposition, can reach disposable success substantially, and decomposition working hour shines can shorten 30% than the prior art, In addition the disassembling tool is safe and reliable, easy to operate, and can effectively protect engine parts are used in decomposable process.

Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to In this, any one skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in Change or replace, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with described Subject to scope of the claims.

Claims

1. the disassembling tool of bolt bush structure, which is characterized in that including：

There are outwardly extending multiple claws (11), the end of the claw (11) to be provided with recessed for clamping bar (10), one end end Slot (12), the internal diameter of the end of the multiple claw (11) under free state is more than the diameter of bolt bush (91), contraction-like The groove (12) fishbolt bushing (91) under state；

It is sheathed on the external boosting nut (20) of the clamping bar (10), is threadedly coupled between the clamping bar (10)；

It is sheathed on the external axle sleeve (30) of the clamping bar (10), described in the rotary action lower edge of the boosting nut (20) Clamping bar (10) slides axially.

2. the disassembling tool of bolt bush structure according to claim 1, which is characterized in that clamping bar (10) outer wall With side plane (13), the side plane (13) is in groove-like, is provided with threaded hole on the axle sleeve (30), the threaded hole is built-in There is anti-turn screw (40), the stud bottom surface of the anti-turn screw (40) squeezes the side plane (13), for preventing clamping bar 10 Relative rotation is generated between axle sleeve 30.

3. the disassembling tool of bolt bush structure according to claim 1, which is characterized in that the clamping bar (10) has Six claws (11), six claws (11) are circumferentially distributed in the clamping bar (10) end.