CN212225951U - Walking speed reducer and hoisting apparatus with locking function - Google Patents
Walking speed reducer and hoisting apparatus with locking function Download PDFInfo
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- CN212225951U CN212225951U CN202020543208.9U CN202020543208U CN212225951U CN 212225951 U CN212225951 U CN 212225951U CN 202020543208 U CN202020543208 U CN 202020543208U CN 212225951 U CN212225951 U CN 212225951U
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- speed reducer
- walking speed
- supporting seat
- locking function
- planetary
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Abstract
The utility model relates to a walking speed reducer and hoisting apparatus with locking function, walking speed reducer include supporting seat, support flange, stopper, lock nut, planet reduction gears, support flange passes through conical bearing and supporting seat connection, and lock nut is located one side that support flange is close to planet reduction gears, lock nut adopts the suspension nut structure, and it passes through axial cylindric lock and supporting seat connection, the utility model discloses a material, structure and the locking mode to lock nut improve, can keep the original assembly means and the assembly space of walking speed reducer, need not to increase extra cost, can realize again that the walking speed reducer should the complicated changeable operating mode, make the working strength of walking speed reducer obtain obvious promotion, reduced fault rates such as oil leak, card that the walking speed reducer ubiquitous die, beat the tooth.
Description
Technical Field
The utility model belongs to the technical field of the walking speed reducer, specifically speaking relates to a walking speed reducer and hoisting apparatus with locking function.
Background
Taking a walking speed reducer for a crawler as an example, when the walking speed reducer works, the main machine is in pivot steering, loaded steering, no-load climbing, soft gravel ground and frozen soil ground belong to complex working conditions, at the moment, the speed reducer is subjected to larger axial force, and continuous working or transient force is overlarge, so that the locking nut and the supporting seat are easy to separate from each other due to overlarge clearance.
When the locknut loosens, the early failure shows that the oil leakage occurs at the floating oil seal. After the speed reducer is subjected to axial force, the locking nut is loosened or only separated from the 1-thread, and a gap is formed in the sealing part of the floating seal ring after an axial gap exists, so that oil leaks. After the early oil leakage fault of the walking speed reducer occurs, when the walking speed reducer is continuously used, the locking nut gradually moves towards the end cover part at the rear end of the speed reducer or is directly separated from the end cover part, and the fault expression forms are divided into 4 types: the 1 st case is a tapered roller bearing failure; in the 2 nd case, the rear half part of the connection of the bearing seat and the gear ring is directly separated from the supporting seat; in the 3 rd situation, the speed reducer continues to move when working after the locking nut is disengaged, the locking nut is disengaged from the axial displacement to cause the internal spline of the three-stage planet carrier to disengage from the internal spline of the supporting seat, the three-stage planet carrier is not connected with the supporting seat to cause the force from the motor to be only transmitted to the planetary transmission part of the speed reducer and not to be transmitted to the gear ring, so that the speed reducer does not act, and the idling phenomenon occurs when the rear cover is opened; the 4 th condition is a foreign matter of bearing damage after the locking nut is disengaged, and the foreign matter disengaged by the locking nut moves to the planetary transmission part to cause the planetary transmission part to be toothed, so that a serious fault that all gears in the walking are broken occurs. Therefore, locknut looseness prevention of the walking speed reducer is the core technology of the walking speed reducer, and in order to reduce faults of the walking speed reducer, improvement of a locknut locking mode is key work of the whole walking speed reducer industry.
At present, locking is realized through the mode that axial nut screwed up by lock nut, and because the problem of material and structure, fastening force is less, when meetting great axial force, lock nut still has the phenomenon of breaking away from, causes a series of quality problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, a travel speed reducer and a lifting device having a lock function have been proposed.
In order to achieve the above object, the utility model provides a following technical scheme:
a walking speed reducer with a locking function comprises a supporting seat, a supporting flange, a brake, a locking nut and a planetary speed reducing mechanism, wherein a hydraulic motor used for power input is installed on the supporting seat, an output shaft of the hydraulic motor is connected with an input sleeve of the planetary speed reducing mechanism through a spline, and an external spline of the input sleeve is connected with the brake;
the supporting flange is connected with the supporting seat through a conical bearing, the locking nut is located on one side, close to the planetary reduction mechanism, of the supporting flange, the locking nut is of a suspension nut structure and is connected with the supporting seat through an axial cylindrical pin.
Further, the connecting seat of the hydraulic motor is fixedly connected with the supporting seat through a bolt.
Furthermore, the shell of the brake is fixedly connected with the supporting seat.
Further, the brake is a normally closed type plate brake.
Furthermore, the planetary speed reducing mechanism comprises a primary planetary unit, a secondary planetary unit and a tertiary planetary unit which are in transmission connection, and a primary gear ring of the primary planetary unit, a secondary gear ring of the secondary planetary unit and a tertiary gear ring of the tertiary planetary unit are connected to form an integrally formed gear ring.
Further, the gear ring is fixedly connected with the support flange.
Further, the locking nut is made of 42 CrMo.
Additionally, the utility model also provides a hoisting apparatus, include the walking speed reducer that has locking function.
Furthermore, the support flange is connected with a chain wheel, a chain plate and a crawler belt.
The utility model has the advantages that:
through improving lock nut's material, structure and locking mode, can keep the original assembly methods of walking speed reducer and assembly space, need not to increase extra cost, can realize again that the walking speed reducer deals with complicated changeable operating mode, make the working strength of walking speed reducer obtain obvious promotion, reduced fault rates such as oil leak, card that the walking speed reducer ubiquitous is died, beat the tooth.
Drawings
Fig. 1 is a schematic view of the overall structure of the walking reducer.
In the drawings: the device comprises a support seat 1, a conical bearing 2, an input sleeve 3, a cylindrical pin 4, a locking nut 5, a three-stage planetary unit 6, a gear ring 7, a two-stage planetary unit 8, a one-stage planetary unit 9 and a support flange 10.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
The present invention will be further described with reference to the accompanying drawings and preferred embodiments.
The first embodiment is as follows:
as shown in fig. 1, a traveling speed reducer with a locking function includes a support base 1, a support flange 10, a brake, a lock nut 5, and a planetary speed reduction mechanism, specifically, a hydraulic motor used as power input is installed on the support base 1, an output shaft of the hydraulic motor is connected with an input sleeve 3 of the planetary speed reduction mechanism through a spline, and meanwhile, a connecting base of the hydraulic motor is fixedly connected with the support base 1 through a bolt. In addition, the external spline of the input sleeve 3 is connected with a brake, the brake is a normally closed type sheet brake, and a shell of the brake is fixedly connected with the support seat 1. In the initial state, the input sleeve 3 of the planetary reduction gear mechanism cannot rotate, and the traveling reduction gear is in a braked state.
The supporting flange 10 is connected with the supporting seat 1 through the conical bearing 2, and the locking nut 5 is located on one side, close to the planetary reduction mechanism, of the supporting flange 10. In order to increase the tensile strength and avoid the damage of the internal thread of the lock nut 5, the lock nut 5 is made of 42 CrMo. Meanwhile, the locking nut 5 adopts a suspended nut structure, when the locking nut 5 is stressed, the external thread teeth of the supporting seat stretch in a tensile mode, the locking nut teeth are shortened in a compression mode, the change difference of the stretching pitch is the largest in the first circle close to the supporting surface, the strain is the largest, the stress is the largest, and the rest circles are sequentially decreased progressively. In order to improve the uneven load distribution among the thread teeth, the lock nut 5 is designed to be in a stretched form, i.e., to suspend the nut, so that the load distribution is uniformed. When the first buttons with the largest stress generate plastic deformation, the deformation of the inner thread and the outer thread is consistent, and the damage of the threads is reduced. In addition, lock nut 5 is connected with supporting seat 1 through axial cylindric lock 4, and cylindric lock 4 is equipped with 2, makes things convenient for assembly shop quality testing person to locking mode, size, locking degree inspection. The traditional screw locking only has 5mm to lock threads, and 2 cylindrical pins 4 are locked in the axial direction and have 2 multiplied by 22mm, so that the locking effect is enhanced, and the threaded connection strength is high.
The planetary speed reducing mechanism comprises a primary planetary unit 9, a secondary planetary unit 8 and a tertiary planetary unit 6 which are in transmission connection. When the planetary reduction mechanism is required to operate, a piston of the brake is pushed by hydraulic oil, the normally closed type plate brake is opened, the input sleeve 3 drives a sun gear of the primary planetary unit 9 connected through a spline, so as to drive the primary planetary unit 9, the primary planetary unit 9 drives a primary gear ring of the primary planetary unit to output and simultaneously inputs power to the secondary planetary unit 8, similarly, the secondary planetary unit 8 drives a secondary gear ring of the secondary planetary unit to output and simultaneously inputs power to the tertiary planetary unit 6, as a planet carrier of the tertiary planetary unit 6 is fixed with the supporting seat 1, the tertiary planetary unit 6 directly drives the tertiary gear ring of the tertiary planetary unit, as the primary gear ring of the primary planetary unit, the secondary gear ring of the secondary planetary unit and the tertiary gear ring of the tertiary planetary unit are connected into a whole to form a gear ring 7, and at the same time, the gear ring 7 is fixedly connected with the support flange 10, so that three-level gear rings of the planetary differential transmission speed reducer are formed to output together, and the gear ring 7 and the support flange 10 are driven to rotate.
The utility model provides a hoisting device, includes the walking speed reducer that has locking function, simultaneously, be connected with sprocket, link joint and track on the support flange 10, supporting seat 1 is fixed on hoisting device's commentaries on classics track shoe, and support flange 10 rotates the back, drives sprocket, link joint and track and rotates, and hoisting device walks the operation, hoisting device is other similar hoisting machinery such as mobile crane, gantry crane.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (9)
1. A walking speed reducer with a locking function comprises a supporting seat, a supporting flange, a brake, a locking nut and a planetary speed reducing mechanism, and is characterized in that a hydraulic motor used as power input is installed on the supporting seat, an output shaft of the hydraulic motor is connected with an input sleeve of the planetary speed reducing mechanism through a spline, and an external spline of the input sleeve is connected with the brake;
the supporting flange is connected with the supporting seat through a conical bearing, the locking nut is located on one side, close to the planetary reduction mechanism, of the supporting flange, the locking nut is of a suspension nut structure and is connected with the supporting seat through an axial cylindrical pin.
2. The walking speed reducer with locking function as claimed in claim 1, wherein the connecting seat of the hydraulic motor is fixedly connected with the supporting seat by a bolt.
3. The walking speed reducer with locking function as claimed in claim 1, wherein the housing of the brake is fixedly connected with the supporting seat.
4. A travel reducer with locking function as claimed in claim 1, wherein the brake is a normally closed type plate brake.
5. The walking speed reducer with locking function of claim 1, wherein the planetary speed reducing mechanism comprises a primary planetary unit, a secondary planetary unit and a tertiary planetary unit which are in transmission connection, and a primary gear ring of the primary planetary unit, a secondary gear ring of the secondary planetary unit and a tertiary gear ring of the tertiary planetary unit are connected to form an integral gear ring.
6. A walking speed reducer with locking function as claimed in claim 5, characterized in that the gear ring is fixedly connected with the supporting flange.
7. The walking speed reducer with locking function of any one of claims 1-6, wherein the locking nut is made of 42 CrMo.
8. A hoisting device comprising the walking reducer with locking function according to any one of claims 1 to 7.
9. The lifting device as recited in claim 8 wherein a sprocket, a link plate and a track are attached to the support flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020543208.9U CN212225951U (en) | 2020-04-13 | 2020-04-13 | Walking speed reducer and hoisting apparatus with locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020543208.9U CN212225951U (en) | 2020-04-13 | 2020-04-13 | Walking speed reducer and hoisting apparatus with locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212225951U true CN212225951U (en) | 2020-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020543208.9U Active CN212225951U (en) | 2020-04-13 | 2020-04-13 | Walking speed reducer and hoisting apparatus with locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212225951U (en) |
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2020
- 2020-04-13 CN CN202020543208.9U patent/CN212225951U/en active Active
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