CN204149085U - A kind of locking big nut installing/dismounting frock - Google Patents
A kind of locking big nut installing/dismounting frock Download PDFInfo
- Publication number
- CN204149085U CN204149085U CN201420595138.6U CN201420595138U CN204149085U CN 204149085 U CN204149085 U CN 204149085U CN 201420595138 U CN201420595138 U CN 201420595138U CN 204149085 U CN204149085 U CN 204149085U
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- spanner
- pin
- sleeve
- big nut
- hole
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Abstract
The utility model relates to a kind of locking big nut installing/dismounting frock, comprises spanner and sleeve.Its main points are: the running-on end face of sleeve is evenly equipped with four positioning keys, and the spanner end face of sleeve is provided with pulls pin-and-hole and torgue measurement square hole; Spanner be provided with pull that pin-and-hole matches pull straight pin and lengthen pin; Spanner is connected by pulling straight pin and pulling pin-and-hole with sleeve.The utility model structure is simple, easy to manufacture, spanner and sleeve adopt straight pin to be connected, easy to loading and unloading, and spanner is provided with lengthening pin, facilitate the connection of extension bar, not only laborsaving but also safety during twisting big nut, sleeve is provided with torgue measurement square hole, is convenient for measuring screw-down torque, ensure that big nut is in place, rolling element uniform stressed, extends bearing life, improves the overall performance of driving speed reducer; This frock is applicable to that the big nut of the serial driving speed reducers such as 6 tons, 7 tons, 8 tons, 9 tons is installed, dismounting, versatility and practicality good.
Description
Technical field
The utility model relates to a kind of installing/dismounting frock, is specifically related to a kind of locking big nut installing/dismounting frock for driving speed reducer.
Background technology
The locking big nut of the driving speed reducer of excavator effectively raises the pretightning force of large bearing axis, extends the service life of bearing, also improves the overall performance of driving speed reducer simultaneously.And install, when dismantling big nut, the moment that big nut needs is large, adopt conventional spanner, the time-consuming effort of installing/dismounting, the installing/dismounting time is long, also easily damages spanner and big nut, next is because big nut size is large, conventional torque spanner can not be used to measure the screw-down torque of big nut, preloading of the bearing that also just cannot effectively control, safety and reliability can not get ensureing.
Summary of the invention
The purpose of this utility model is the deficiency that will overcome above-mentioned technology, provides a kind of low price, easy to operate, for the locking big nut installing/dismounting frock of driving speed reducer.
Locking big nut installing/dismounting frock of the present utility model, comprises spanner and sleeve, it is characterized in that: the running-on end face of described sleeve is evenly equipped with four positioning keys, and the spanner end face of sleeve is provided with pulls pin-and-hole; Described spanner be provided with pull that pin-and-hole matches pull straight pin, pull straight pin and be fixed tightly on spanner by nut; Described spanner is connected by pulling straight pin and pulling pin-and-hole with sleeve.
In order to better realize above-mentioned purpose:
The center of the spanner end face of described sleeve is provided with the torgue measurement square hole measuring big nut moment.
The two ends of described spanner are also provided with the lengthening pin connecting extension bar, lengthen pin and are fixed tightly on spanner by nut.
Locking big nut installing/dismounting frock of the present utility model, structure is simple, easy to manufacture, and spanner and sleeve adopt straight pin to be connected, easy to loading and unloading, spanner is provided with lengthening pin, facilitates the connection of extension bar, not only laborsaving but also safety during twisting big nut, sleeve is provided with torgue measurement square hole, be convenient for measuring screw-down torque, ensure that big nut is in place, rolling element uniform stressed, extend bearing life, thus improve the overall performance of driving speed reducer; This frock is applicable to that the big nut of the serial driving speed reducers such as 6 tons, 7 tons, 8 tons, 9 tons is installed, dismounting, versatility and practicality good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, spanner, 2, pull straight pin, 3, sleeve, 4, positioning key, 5, torgue measurement square hole, 6, lengthen pin, 7, running-on end face, 8, spanner end face.
Detailed description of the invention
Locking big nut installing/dismounting frock of the present utility model, comprises spanner 1 and sleeve 3.The running-on end face 7 of sleeve 3 is evenly equipped with four positioning keys 4, the spanner end face 8 of sleeve 3 is provided with pulls pin-and-hole and torgue measurement square hole 5.Spanner 1 be provided with pull that pin-and-hole matches pull straight pin 2 and be connected the lengthening pin 6 of extension bar, pull straight pin 2 and lengthening pin 6 is fixed tightly on spanner 1 by nut.Spanner 1 is connected by pulling straight pin 2 and pulling pin-and-hole with sleeve 3.
When locking big nut on driving speed reducer macro-axis is installed, sleeve 3 is enclosed within big nut, four positioning keys 4 of sleeve 3 snap in four grooves of big nut, two of spanner 1 pull and correspondingly on spanner end face 8 that straight pin 2 inserts sleeve 3 pull in pin-and-hole, rotary spanner 1 can be tightened or loosening big nut, take off spanner 1, the square toes of torque spanner are inserted in the torgue measurement square hole 5 on the spanner end face 8 of sleeve 3, pull the screw-down torque that torque spanner can measure big nut, ensure that large bearing preloads.When screw-down torque is larger, also connect extension bar by the lengthening pin 6 on spanner 1, so both laborsaving and security good.
Claims (3)
1. a locking big nut installing/dismounting frock, comprise spanner (1) and sleeve (3), it is characterized in that: the running-on end face (7) of described sleeve (3) is evenly equipped with four positioning keys (4), the spanner end face (8) of sleeve (3) is provided with pulls pin-and-hole; Described spanner (1) be provided with pull that pin-and-hole matches pull straight pin (2), pull straight pin (2) and be fixed tightly on spanner (1) by nut; Described spanner (1) is connected by pulling straight pin (2) and pulling pin-and-hole with sleeve (3).
2. installing/dismounting frock according to claim 1, is characterized in that: the center of the spanner end face (8) of described sleeve (3) is provided with the torgue measurement square hole (5) measuring big nut moment.
3. installing/dismounting frock according to claim 1, is characterized in that: the two ends of described spanner (1) are also provided with the lengthening pin (6) connecting extension bar, lengthens pin (6) and is fixed tightly on spanner (1) by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595138.6U CN204149085U (en) | 2014-10-15 | 2014-10-15 | A kind of locking big nut installing/dismounting frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595138.6U CN204149085U (en) | 2014-10-15 | 2014-10-15 | A kind of locking big nut installing/dismounting frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204149085U true CN204149085U (en) | 2015-02-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420595138.6U Active CN204149085U (en) | 2014-10-15 | 2014-10-15 | A kind of locking big nut installing/dismounting frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204149085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260029A (en) * | 2014-10-15 | 2015-01-07 | 湖南南方宇航工业有限公司 | Big locking nut assembling and disassembling tool |
-
2014
- 2014-10-15 CN CN201420595138.6U patent/CN204149085U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260029A (en) * | 2014-10-15 | 2015-01-07 | 湖南南方宇航工业有限公司 | Big locking nut assembling and disassembling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Dong Jia Duan High-tech Industrial Park in Hunan province Zhuzhou city Lusong District 412000 Patentee after: Chinese Hangfa south of Hunan Aerospace Industry Co. Ltd. Address before: Dong Jia Duan High-tech Industrial Park in Hunan province Zhuzhou city Lusong District 412000 Patentee before: Hunan Nanfang Aviation Industry Co.,Ltd. |