CN204458913U - There is the shearer haulage engaging and disengaging gear of overload protection function - Google Patents
There is the shearer haulage engaging and disengaging gear of overload protection function Download PDFInfo
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- CN204458913U CN204458913U CN201420861063.1U CN201420861063U CN204458913U CN 204458913 U CN204458913 U CN 204458913U CN 201420861063 U CN201420861063 U CN 201420861063U CN 204458913 U CN204458913 U CN 204458913U
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- expansion set
- overload protection
- engaging
- protection function
- disengaging gear
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Abstract
The utility model belongs to the technical field of the overload protection of coal mine comprehensive face coal cutter tractive unit motor and transmission system, in order to solve shearer hauled-part change after damage spare part or maintenance power depart from time, operation inconvenience, elapsed time is long, easily cause the problems such as gear-box pollution, provide a kind of shearer haulage engaging and disengaging gear with overload protection function, comprise hollow shaft, connect expansion set, road wheel, shear plate and end cap, one end of described hollow shaft is connected with shearer hauled-part gear-box by spline, the other end of hollow shaft is connected with the endoporus being connected expansion set by key, described connection expansion set is provided with high-pressure oil duct, connect the external diameter surface of expansion set to contact with the wheelboss inner hole surface friction of road wheel, shear plate connects with the joint of suppressing being connected expansion set, suppresses joint and is provided with shearing ring, when Operating torque transships, suppresses joint and is cut off, and oil pressure discharges, and the frictional connection connecting expansion set and road wheel gets loose, and achieves the overload protection to shearer hauled-part.
Description
Technical field
The utility model belongs to the technical field of the overload protection of coal mine comprehensive face coal cutter tractive unit motor and transmission system, is specifically related to a kind of shearer haulage engaging and disengaging gear with overload protection function.
Background technique
Utilize shearer haulage engaging and disengaging gear can when overload appears in coal winning machine misoperation or mechanical failure, realize precisely getting loose of driving wheel and follower, avoid the infringement to machine and personnel; When overload condition disappear after, can simple and fast recovery connection, realize minimum dead time.
Existing shearer hauled-part devises a hollow shaft, and one end of hollow shaft is connected with the internal spline of traction gearbox, and the other end is connected with the internal spline of traction road wheel, realizes the moment of torsion transmission of tractive unit.When coal winning machine debugging and maintenance, hollow shaft can be extracted out from adopting sky side, realizes power and departs from; Meanwhile, by designing the weak link of hollow shaft, when drawing fault or overload occurs misoperation, first hollow shaft can rupture, and realizes the overload protection to shearer hauled-part.But there is following shortcoming in this structure: when spare part or the disengaging of maintenance power are changed in (1), damage, need to remove wear ring, rang ring, end cap etc., the size of hollow shaft and weight are comparatively large, two ends internal spline alignment difficulty, the particularly development of high-power high working face coal winning machine in recent years, special instrument is needed during dismounting, labor intensity is large, and elapsed time is long; (2), underground coal mine narrow space, bad environments, during dismounting, steam and coal dust very easily cause the pollution of gear-box.(3), the weak link difficult design of hollow shaft, can not to get loose power by precise breakage.
Summary of the invention
When the utility model is intended to change spare part or the disengaging of maintenance power for existing shearer hauled-part after damage; operation is inconvenient, labor intensity is large and elapsed time is long, easily cause the problems such as gear-box pollution, provides a kind of shearer haulage engaging and disengaging gear with overload protection function.
The utility model adopts following technological scheme:
A kind of shearer haulage engaging and disengaging gear with overload protection function, comprise hollow shaft, connect expansion set, road wheel, shear plate and end cap, one end of described hollow shaft is connected with shearer hauled-part gear-box by spline, the other end of hollow shaft is connected with the endoporus being connected expansion set by key, described connection expansion set is provided with high-pressure oil passage, connects the external diameter surface of expansion set and contacts with the wheelboss inner hole surface friction of road wheel; One end of described shear plate is connected with the axial end of road wheel, the other end of shear plate connects with the joint of suppressing being connected expansion set, suppress jiont treatment on connecting bushing and connect with high-pressure oil passage, and suppress the outside that joint and the connection that is connected expansion set are positioned at end cap.
Described suppress joint with shear plate, be connected between expansion set for plug-in type connects.
Described joint of suppressing is provided with shearing ring.
The axial end of described hollow shaft be connected expansion set axially between be provided with distance and pad.
The axostylus axostyle of described connection expansion set is provided with boss, is provided with distance pad between boss and shear plate.
Described distance pad adopts high-abrasive material.
Described high-abrasive material is teflon.
Described connection expansion set and the frictional contact surface of road wheel are provided with some wearing rings.
Described wearing ring is bearing.
Described wearing ring is copper sheathing.
The utility model has following beneficial effect:
A, the utility model utilize the wheelboss inner hole of hollow connection expansion set and road wheel surface to rub, realize moment of torsion transmission, utilize differential shearing of sliding, joint will be suppressed cut off, thus cause oil pressure abrupt release and the frictional connection that gets loose, can not hollow shaft be damaged, reach the object of overload protection, effectively prevent the infringement to machine and personnel when overload appears in coal winning machine misoperation or mechanical failure, device maintenance expense declines to a great extent;
B, to suppress joint be push-in connection, if suppress joint to cut off, when overload condition disappear after, can simple and fast recovery connection, realize without the need to maintenance of uncapping, labor intensity reduces greatly, avoid environment to reduce to minimum to the pollution of gear-box, dead time;
The bearing surface of c, connection expansion set is through special processing, effectively can prevent friction from getting loose and produce adhesion occlusion, and ensure constant friction factor, by the designing and calculating of oil pressure and bearing area, in conjunction with the operating mode of coal winning machine, design is applicable to the adjustable moment that gets loose of different working condition, can realize getting loose accurately;
Between the frictional connection surface of d, connection expansion set and road wheel, wearing ring (bearing or copper sheathing) is set, can effectively reduces after getting loose the wearing and tearing connecting expansion set pressure-bearing surface.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of part B in Fig. 1;
In figure: 1-hollow shaft, 2-key, 3-connection expansion set, 4-road wheel, 5-wearing ring, 6-distance pad, 7-suppress joint, 8-shear plate, 9-end cap, 10-boss, 11-high-pressure oil passage.
Embodiment
By reference to the accompanying drawings, embodiment of the present utility model is described further:
The shearer haulage engaging and disengaging gear with overload protection function as shown in Figure 1, comprise hollow shaft 1, connect expansion set 3, road wheel 4, shear plate 8 and end cap 9, one end of described hollow shaft 1 is connected with shearer hauled-part gear-box by spline, the other end of hollow shaft 1 is connected with the endoporus being connected expansion set 3 by key 2, described connection expansion set 3 is provided with high-pressure oil passage 11, connects the external diameter surface of expansion set 3 and contacts with the wheelboss inner hole surface friction of road wheel 4; One end of described shear plate 8 is connected with the axial end of road wheel 4, the other end of shear plate 8 connects with the joint 7 of suppressing being connected expansion set 3, suppress joint 7 to be installed on connecting bushing 3 and to connect with high-pressure oil passage 11, and suppress the outside that joint 7 and the connection of connecting bushing 3 are positioned at end cap 9.
The utility model utilizes expansion set principle to realize overload protection to engaging and disengaging gear, and the external diameter surface connecting expansion set 3 is pressure-bearing surface, and this pressure-bearing surface should keep certain friction factor, and oil pressure and bearing area determine the Maximum Torque that can transmit, i.e. sliding torque.Hollow shaft 1 remains the internal spline connected structure of one end and traction gearbox, the other end be by key 2 be connected expansion set 3 and be connected, should ensure during connection that the intensity of structure and connection is enough.
Utilizing mining high-voltage hand pump, by suppressing joint 7, oil pump is entered to connect expansion set 3, connecting expansion set 3 and expanding under oil pressure, make the wheelboss inner hole of the pressure-bearing surface of connection expansion set 3 and road wheel 4 surface that frictional connection occur, finally realize moment of torsion transmission.If Operating torque exceedes selected sliding torque; connect expansion set 3 to rotate in company with hollow shaft 1; because shear plate 8 is fixed on the axial end of road wheel 4; there is differential shearing; joint 7 will be suppressed cut off (from shearing ring fracture); thus cause oil pressure abrupt release, connect expansion set 2 and get loose with the frictional connection of road wheel 4, achieve the overload protection to shearer hauled-part.
The bearing surface connecting expansion set 3 through phosphatization or nitriding treatment (prior art), need produce adhesion occlusion, and ensures constant friction factor, thus ensure release torque accurately when getting loose to prevent friction.And between frictional connection surface, be provided with wearing ring 5(as bearing or copper sheathing), ensure pressure-bearing surface after getting loose without any wearing and tearing.
The axial end of described hollow shaft 1 be connected expansion set 3 and be axially arranged with distance and pad 6; Connect and be also provided with distance between boss 10 on the axostylus axostyle of expansion set 3 and shear plate 8 and pad 6, this distance pad 6 adjusting plays and positioning action, employing teflon or other high-abrasive material.
Claims (10)
1. one kind has the shearer haulage engaging and disengaging gear of overload protection function, it is characterized in that: comprise hollow shaft (1), connect expansion set (3), road wheel (4), shear plate (8) and end cap (9), one end of described hollow shaft (1) is connected with shearer hauled-part gear-box by spline, the other end of hollow shaft (1) is connected with the endoporus being connected expansion set (3) by key (2), described connection expansion set (3) is provided with high-pressure oil passage (11), and the external diameter surface connecting expansion set (3) contacts with the wheelboss inner hole surface friction of road wheel (4); One end of described shear plate (8) is connected with the axial end of road wheel (4), the other end of shear plate (8) connects with the joint (7) of suppressing being connected expansion set (3), suppressing joint (7), to be installed on connecting bushing (3) upper and connect with high-pressure oil passage (11), and suppress the outside that joint (7) and the connection being connected expansion set (3) are positioned at end cap (9).
2. the shearer haulage engaging and disengaging gear with overload protection function according to claim 1, is characterized in that: described suppress joint (7) with shear plate (8), be connected between expansion set (3) for plug-in type connects.
3. the shearer haulage engaging and disengaging gear with overload protection function according to claim 2, is characterized in that: described joint (7) of suppressing is provided with shearing ring.
4. the shearer haulage engaging and disengaging gear with overload protection function according to claim 1, is characterized in that: the axial end of described hollow shaft (1) be connected expansion set (3) axially between be provided with distance and pad (6).
5. the shearer haulage engaging and disengaging gear with overload protection function according to claim 4, is characterized in that: the axostylus axostyle of described connection expansion set (3) is provided with boss (10), is provided with distance and pads (6) between boss (10) and shear plate (8).
6. the shearer haulage engaging and disengaging gear with overload protection function according to claim 4 or 5, is characterized in that: described distance pad (6) adopts high-abrasive material.
7. the shearer haulage engaging and disengaging gear with overload protection function according to claim 6, is characterized in that: described high-abrasive material is teflon.
8. the shearer haulage engaging and disengaging gear with overload protection function according to claim 5, is characterized in that: described connection expansion set (3) is provided with some wearing rings (5) with the frictional contact surface of road wheel (4).
9. the shearer haulage engaging and disengaging gear with overload protection function according to claim 8, is characterized in that: described wearing ring (5) is bearing.
10. the shearer haulage engaging and disengaging gear with overload protection function according to claim 8, is characterized in that: described wearing ring (5) is copper sheathing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420861063.1U CN204458913U (en) | 2014-12-31 | 2014-12-31 | There is the shearer haulage engaging and disengaging gear of overload protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420861063.1U CN204458913U (en) | 2014-12-31 | 2014-12-31 | There is the shearer haulage engaging and disengaging gear of overload protection function |
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| Publication Number | Publication Date |
|---|---|
| CN204458913U true CN204458913U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420861063.1U Active CN204458913U (en) | 2014-12-31 | 2014-12-31 | There is the shearer haulage engaging and disengaging gear of overload protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595383A (en) * | 2014-12-31 | 2015-05-06 | 太重煤机有限公司 | Coal mining machine traction clutch device with overload protection function |
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2014
- 2014-12-31 CN CN201420861063.1U patent/CN204458913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595383A (en) * | 2014-12-31 | 2015-05-06 | 太重煤机有限公司 | Coal mining machine traction clutch device with overload protection function |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190717 Address after: 030699 Yuci Industrial Park, Shanxi, Jinzhong Patentee after: Shanxi Matt Machinery Manufacturing Co., Ltd. Address before: 030032 Taiyuan economic and Technological Development Zone, Shanxi city street, No. 25 Patentee before: Taizhong Coal Mining Machinery Co., Ltd. |