CN207470629U - Closed type bearing disassembling tool - Google Patents

Abstract

Closed type bearing extracting tool provided by the utility model blocks the claw group of split bearing including one end, further includes mandril, and the outside of claw group can be socketed in inside fixed sleeves；It is opposite with the split bearing section of the claw group other end after one end of mandril extend into the inside of fixed sleeves.It is fixed inside and outside the bearing extractor claw of the utility model, avoid the shortcomings that traditional bearing extracting tool claw easily comes off, it is connected between rotary shaft and mandril using bearing, mandril no longer rotates behind top to shaft end, and traditional mandril is avoided to install shaft end spin friction with bearing demolition and destroys axial end.The bearing demounting appliance wraps up bearing demolition comprehensively, and conventional detacher is avoided to have the phenomenon that job insecurity, claw is easy to fall off, service efficiency is low.

Description

Closed type bearing disassembling tool

Technical field

The utility model belongs to machinery field more particularly to a kind of closed type bearing for being used to dismantle the bearing on driving member Extracting tool.

Background technology

Realize the connection of axis commonly using the mode of rolling bearing and axis connection in a variety of machine drivings, and bearing with The connection of axis is generally using transition or interference fit, and when dismounting is more difficult, and people can be torn open using various incorrect methods sometimes Bearing is unloaded, leads to bearing damage, deformation.The specification way of some can use easy three-jaw stripping attachment, and operation principle is three Pawl blocks the inner face of bearing outside bearing, and external screw thread is carried on mandril, pushes up one end of mandril by rotating mandril and arrives The axial end of bearing is installed, mandril has relative rotation with shaft end when rotating mandril.Contact surface during due to its claw fixing bearing Product is small, and fixation is not firm, and claw easily comes off when installing and using from bearing, victory inconvenient for use, and efficiency is low.Secondly bearing installation When shaft end is ejected, extracting tool upper ejector pin has relative motion with bearing installation shaft end, and frictional force is laborious greatly, destroys shaft end end Face.When encountering some small bearing removals the area smaller of claw fixing bearing or with the interference of bearing demolition shaft part and can not Dismounting.

Utility model content

The utility model provides a kind of closed type bearing disassembling tool of comprehensive package bearing, solves existing three-jaw dismounting Device claw is easy to fall off, with bearing demolition end friction destruction axial end and small bearing removal problem.

The utility model uses following technical scheme：

Closed type bearing extracting tool blocks the claw group 3 of split bearing 9, the external energy of the claw group 3 including one end It is enough socketed in inside fixed sleeves 2；

Mandril 5, after one end of the mandril 5 extend into the inside of fixed sleeves 2, with being disassembled for 3 other end of claw group Bearing section 10 is opposite.

Bearing 6 and rotary shaft 7 are further included, the bearing 6 is mounted in the spindle nose of rotary shaft 7, and the mandril 5 is located at outer solid Surely it is connect inside set 2 and with bearing 6.

The outside of the rotary shaft 7 has external screw thread, the upper opening of the fixed sleeves, and opening has internal thread, The rotary shaft 7 is rotatably connected by external external screw thread with the internal thread of fixed sleeves 2.

The inside of 3 other end of claw group is fixed by interior fixing sleeve 4, and having on the interior fixing sleeve 4 wears mandril 5 The trepanning crossed.

The outside of the claw group 3 is with externally threaded cylinder, rotates and connects with the internal thread of 2 inner circle of fixed sleeves It connects.

The interior fixing sleeve 4 has external screw thread, is rotatablely connected with the internal thread of the inner circle of 3 other end of claw group.

The claw group 3 is made of at least two claws.

It is compared with the prior art, the present utility model uses full packaging type claw, and comprehensive engagement bearing demolition uses Inside and outside fixing sleeve stationary jaw avoids claw problem easy to fall off during dismounting bearing.The utility model will be pushed up using bearing Bar is formed separately two parts with rotary shaft, and when dismantling bearing, mandril and bearing demolition shaft end end face be not opposite in this way Movement, the two do not destroy shaft end end face due to rotation, even if mandril is static with respect to bearing demolition installation shaft end, until being disassembled Bearing installation shaft part is exited from bearing.And it during the tradition claw small bearing of dismounting, because bearing size is smaller, is not easy to consolidate bearing It is fixed, the present invention can easily fixing bearing, dismounting is quick and easy, accelerates bearing removal efficiency.

Description of the drawings

Fig. 1 is the structure diagram of the utility model.

Fig. 2 is the claw group schematic diagram of 2 claws, and A is the sectional view of side view, and B is vertical view.

Fig. 3 is the claw group schematic diagram of 3 claws, and A is the sectional view of side view, and B is vertical view.

Fig. 4 is the claw group schematic diagram of 4 claws, and A is the sectional view of side view, and B is vertical view.

Wherein, 1- handles；2- fixed sleeves；3- claw groups；Courage is fixed in 4-；5- mandrils；6- bearings；7- rotary shafts；8- Hole baffle ring, 9- are split bearing；10- bearing demolition sections.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

As shown in Figure 1, closed type bearing extracting tool provided by the utility model, including claw group 3, the one of claw group 3 It holds as claw, the other end has a hollow structure, and claw one end is for blocking split bearing 9, the hollow structure of the claw other end In can be by mandril 5, the bearing demolition section 10 installed on mandril 5 and split bearing 9 is opposite, by mandril 5 to being disassembled 10 applied force of bearing section, while reversed power is applied to split bearing 9 by claw so that bearing demolition section 10 is in mandril 5 Under the action of be detached from split bearing 9, complete dismounting.

In order to improve stability of the claw group 3 in disassembly process, claw in dismounting bearing is avoided to come off, claw group 3 Outside can be socketed in inside fixed sleeves 2, i.e., after claw group blocks split bearing 9, fixed sleeves 2 are socketed in claw group 3 outside.Wherein, after claw group 3 blocks split bearing 9, external shape is and the fixed sleeves with externally threaded cylinder 2 carry internal thread, and fixed sleeves 2 are sleeved on to the outside of claw group 3 by the cooperation of external screw thread and internal thread.

In order to manipulate the action of mandril 5, the utility model further includes bearing 6 and rotary shaft 7, and bearing 6 is mounted on rotary shaft 7 Spindle nose in, mandril 5 is located at the inside of fixed sleeves 2 and is connect with bearing 6.Wherein, it is ladder inner circle in 7 spindle nose of rotary shaft, axis It holds 6 to be fixed in 7 spindle nose of rotary shaft by hole baffle ring 8, rotary shaft 7 is enable to form relative motion with mandril 5 in rotation, and The transmission that the downward power of mandril 5 passes through rotary shaft 7 so that mandril is with bearing demolition section 10 without relative motion.Rotary shaft 7 Other end key connection has rotational handle 1.The outside of rotary shaft 7 has external screw thread, the upper opening of the fixed sleeves 2, opening Place has internal thread, and rotary shaft 7 is rotatably connected by external external screw thread with the internal thread of fixed sleeves 2.

In order to further stablize, the inside of 3 other end of claw group is fixed by interior fixing sleeve 4, is had on interior fixing sleeve 4 The trepanning for passing through mandril 5, mandril 5 pass through opposite with bearing demolition section 10 from trepanning.Interior fixing sleeve 4 has external screw thread, with The internal thread rotation connection of the inner circle of 3 other end of claw group.

Claw group 3 is made of at least two claws, as shown in Fig. 2 ~ 4, can include 2 ~ 4 claws, after claw closes up, A complete annulus can be formed, it is larger with bearing demolition contact area during to being mounted on bearing demolition.

It when the utility model is used, will be with externally threaded claw group 3 to being mounted on bearing demolition 9, in band external screw thread 3 tail portion inner circle of claw group be packed into fixing sleeve 4, rotate tapped fixed sleeves 2 until complete with externally threaded claw group 3 Portion enters in tapped fixed sleeves 2, holds rotational handle 1 and rotates rotary shaft 7, and then mandril 5 is pushed to move axially, directly Bearing is ejected to by bearing demolition shaft part, bearing demolition is detached with axis.

Above-described is only the preferred embodiment of the utility model, it is noted that for those skilled in the art For, under the premise of the utility model general idea is not departed from, several changes and improvements can also be made, these should also be considered as The scope of protection of the utility model.

Claims (7)

1. closed type bearing disassembling tool, which is characterized in that including：

Block split bearing in one end（9）Claw group（3）, the claw group（3）Outside can be socketed in fixed sleeves（2）It is interior Portion；

Mandril（5）, the mandril（5）One end extend into fixed sleeves（2）Inside after, with claw group（3）The quilt of the other end Dismantle bearing section（10）Relatively.

2. closed type bearing disassembling tool according to claim 1, it is characterised in that：

Further include bearing（6）And rotary shaft（7）, the bearing（6）Mounted on rotary shaft（7）Spindle nose in, the mandril（5）Position In fixed sleeves（2）Internal and and bearing（6）Connection.

3. closed type bearing disassembling tool according to claim 2, it is characterised in that：

The rotary shaft（7）Outside have external screw thread, the fixed sleeves（2）Upper opening, opening have internal thread, The rotary shaft（7）Pass through external external screw thread and fixed sleeves（2）Internal thread rotatable connection.

4. closed type bearing disassembling tool according to claim 1, it is characterised in that：

The claw group（3）The inside of the other end passes through interior fixing sleeve（4）It is fixed, the interior fixing sleeve（4）Above having makes mandril （5）The trepanning passed through.

5. closed type bearing disassembling tool according to claim 4, it is characterised in that：

The claw group（3）Outside be with externally threaded cylinder, with fixed sleeves（2）The internal thread rotation of inner circle connects It connects.

6. closed type bearing disassembling tool according to claim 4, it is characterised in that：

The interior fixing sleeve（4）With external screw thread, with claw group（3）The internal thread rotation connection of the inner circle of the other end.

7. closed type bearing disassembling tool according to claim 1, it is characterised in that：

The claw group（3）It is made of at least two claws.