CN210966389U - Traction head of extension trolley of rolling mill - Google Patents
Traction head of extension trolley of rolling mill Download PDFInfo
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- CN210966389U CN210966389U CN201921762258.XU CN201921762258U CN210966389U CN 210966389 U CN210966389 U CN 210966389U CN 201921762258 U CN201921762258 U CN 201921762258U CN 210966389 U CN210966389 U CN 210966389U
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- rotating shaft
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- cavity
- gear teeth
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Abstract
The utility model discloses a rolling mill extension trolley traction head, which comprises a shell, a cavity arranged in the shell and a rotating shaft penetrating through the cavity, wherein gear teeth are arranged in the middle of the rotating shaft, tapered roller bearings with opposite installation directions are respectively sleeved at the two ends of the gear teeth, one end of the rotating shaft is provided with a bearing end cover which is fixed on the shell and is contacted with the tapered roller bearings, at least one gear supporting set is arranged at the lower side of the gear teeth, the rotating shaft is far away from a connecting device arranged on the bearing end cover, and a lubricating device is fixed above the shell; the ejector rod is connected with the rotating shaft outside the traction trolley through the connecting device, so that the ejector rod can be driven to do reciprocating linear motion, and the reliability is high; tapered roller bearing and gear support group combined use have improved the utility model discloses a life.
Description
Technical Field
The utility model belongs to the technical field of the rolling mill auxiliary assembly, especially, relate to a rolling mill extends dolly traction head.
Background
The steel pipe is at first heated to the rod iron in hot rolling production process, and the rod iron after the heating enters into the rolling mill and changes the hole, because rod iron length is longer, carries out the feeding through the ejector pin to the rod iron during changeing the hole, and the ejector pin is connected with the extension dolly, and the extension dolly drives the ejector pin and makes reciprocating motion to the ejector pin is when feeding the rod iron, still needs to rotate in order to satisfy the needs of changeing the hole. At present, the tip of ejector pin passes through antifriction bearing to be connected in extending the dolly, and in the use, the fragile reliability is low, difficult change to because ejector pin length is longer, the tip is yielding and the jamming phenomenon appears.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a rolling mill extends dolly traction head, fine solution extend dolly and ejector pin connection fragile, be difficult for changing and the jamming phenomenon appears.
In order to realize the purpose, the utility model discloses a technical scheme as follows: a traction head of a rolling mill extension trolley comprises a shell, a cavity arranged in the shell and a rotating shaft penetrating through the cavity, wherein gear teeth are arranged in the middle of the rotating shaft, two ends of the gear teeth are respectively sleeved with tapered roller bearings with opposite installation directions, one end of the rotating shaft is provided with a bearing end cover which is fixed on the shell and is in contact with the tapered roller bearings, at least one gear support group is arranged on the lower side of the gear teeth, one end of the rotating shaft, which is far away from the bearing end cover, is provided with a connecting device, and a lubricating device is fixed above the shell;
the gear support group comprises two pinions which are symmetrical about the axis of the rotating shaft and meshed with the gear teeth, and the pinions are sleeved on the gear shaft in the cavity.
Furthermore, connecting device includes two semicircular staple bolts, and one side of two staple bolts is articulated through articulated axle, and the opposite side passes through the connecting portion that bolt and nut are connected and staple bolt integrated into one piece.
Furthermore, the cross section of the hoop is U-shaped.
Furthermore, a stop ring is arranged at one end of the rotating shaft connected with the connecting device, and a straight groove is formed in the end face of the stop ring.
Furthermore, the lubricating device comprises an oil pot fixed on the shell, and an oil duct communicated with the cavity is arranged at the bottom of the oil pot.
Further, the gear support sets are axially arranged along the rotating shaft in two numbers.
Compared with the prior art, the utility model discloses following beneficial effect has: a rotating shaft is arranged in a traction head of the extension trolley, and the ejector rod is connected with the rotating shaft outside the traction trolley through a connecting device, so that the connection is convenient and the replacement is easy; the both ends of axis of rotation are provided with tapered roller bearing, can bear radial force and axial force simultaneously to at the epaxial teeth of a cogwheel of rotation and with teeth of a cogwheel matched with gear support group, can reduce the radial force that tapered roller bearing bore, prevent that the axis of rotation from rotating the in-process and taking place deformation and jamming phenomenon, improved the life of this device.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a sectional view B-B of FIG. 1;
FIG. 3 is a front view of the connection device;
FIG. 4 is a right side view of FIG. 3;
FIG. 5 is a cross-sectional view A-A of FIG. 3;
FIG. 6 is a front view of the stop ring.
In the figure: 1. a housing; 2. a cavity; 3. a rotating shaft; 4. gear teeth; 5. a tapered roller bearing; 6. a bearing end cap; 7. a gear support set; 8. a connecting device; 9. a lubricating device; 10. a stop ring; 11. a straight slot; 71. a pinion gear; 72. a gear shaft; 81. hooping; 82. hinging a shaft; 83. a bolt; 84. a nut; 85. A connecting portion; 91. an oil can; 92. an oil passage.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-5, the utility model provides a rolling mill extends dolly traction head, including casing 1, the cavity 2 of seting up in casing 1 and the axis of rotation 3 of wearing to locate in cavity 2, the diameter of axis of rotation 3 middle part is greater than the diameter at both ends, processing has teeth of a cogwheel 4 in the middle part of axis of rotation 3, and the both ends of teeth of a cogwheel 4 are respectively overlapped and are equipped with tapered roller bearing 5 that the installation direction is opposite, axis of rotation 3 one end is provided with through the fix with screw on casing 1 and with tapered roller bearing 5 contact's bearing end cover 6, the teeth of a cogwheel 4 downside sets up at least one gear support group 7, the one end of axis of rotation 3 keeping away from bearing end cover 6 is provided with connecting device 8, casing;
Specifically, the connecting device 8 includes two semicircular hoops 81, one side of each hoop 81 is hinged through a hinge shaft 82, that is, an ear plate is arranged on each hoop 81, the hinge shaft 82 penetrates through the ear plate, and the other side of each hoop 81 is connected with a connecting part 85 integrally formed with the hoop 81 through a bolt 83 and a nut 84; the cross section of the hoop 81 is U-shaped; preferably, as shown in fig. 1 and 6, a stop ring 10 is disposed at one end of the rotating shaft 3 connected to the connecting device 8, and a linear groove 11 is disposed on an end surface of the stop ring 10. The end part of the ejector rod is also provided with a stop ring 10, a linear convex block is integrally formed on the stop ring 10 of the ejector rod, when the ejector rod is installed, the stop ring 10 is placed in the hoop 81, the convex block is matched with the linear groove 11, then the hoop 81 is connected by a bolt 83 and a nut 84, and the connecting device 8 is convenient for connecting the ejector rod with the rotating shaft 3 and also convenient for replacing the ejector rod.
Further, the lubricating device 9 comprises an oil pot 91 fixed on the housing 1, the bottom of the oil pot 91 is provided with an oil channel 92 communicated with the cavity 2, and lubricating oil is added into the oil pot 91 to provide good lubrication for the transmission of the tapered roller bearing 5 and the pinion 71 in the housing 1.
When the novel tractor is used, the ejector rod is connected with the rotating shaft 3 through the connecting device 8 outside the traction trolley, the ejector rod can be driven to do reciprocating linear motion, and the reliability is high; the both ends of axis of rotation 3 are provided with tapered roller bearing 5, can bear radial force and axial force simultaneously to the teeth of a cogwheel 4 in axis of rotation 3 and with teeth of a cogwheel 4 matched with gear support group 7, can reduce the radial force that tapered roller bearing 5 bore, prevent that axis of rotation 3 from rotating the in-process and taking place deformation and jamming phenomenon, improved the life of this device.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a rolling mill extension dolly traction head which characterized in that: the device comprises a shell (1), a cavity (2) arranged in the shell (1) and a rotating shaft (3) penetrating through the cavity (2), wherein gear teeth (4) are arranged in the middle of the rotating shaft (3), tapered roller bearings (5) with opposite installation directions are respectively sleeved at two ends of the gear teeth (4), one end of the rotating shaft (3) is provided with a bearing end cover (6) which is fixed on the shell (1) and is contacted with the tapered roller bearings (5), at least one gear support group (7) is arranged at the lower side of the gear teeth (4), one end of the rotating shaft (3) far away from the bearing end cover (6) is provided with a connecting device (8), and a lubricating device (9) is fixed above the shell (1);
the gear supporting set (7) comprises two pinions (71) which are symmetrical about the axis of the rotating shaft (3) and meshed with the gear teeth (4), and the pinions (71) are sleeved on a gear shaft (72) in the cavity (2).
2. The mill extension cart tractor of claim 1, wherein: the connecting device (8) comprises two semicircular hoops (81), one sides of the two hoops (81) are hinged through hinge shafts (82), and the other sides of the two hoops are connected with connecting parts (85) which are integrally formed with the hoops (81) through bolts (83) and nuts (84).
3. The mill extension cart tractor of claim 2, wherein: the cross section of the hoop (81) is U-shaped.
4. The mill extension cart tractor of claim 3, wherein: a stop ring (10) is arranged at one end of the rotating shaft (3) connected with the connecting device (8), and a straight groove (11) is formed in the end face of the stop ring (10).
5. The mill extension cart tractor of claim 1, wherein: the lubricating device (9) comprises an oil can (91) fixed on the shell (1), and an oil duct (92) communicated with the cavity (2) is arranged at the bottom of the oil can (91).
6. The mill extension cart tractor of claim 1, wherein: the two gear supporting groups (7) are axially arranged along the rotating shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762258.XU CN210966389U (en) | 2019-10-18 | 2019-10-18 | Traction head of extension trolley of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762258.XU CN210966389U (en) | 2019-10-18 | 2019-10-18 | Traction head of extension trolley of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210966389U true CN210966389U (en) | 2020-07-10 |
Family
ID=71439734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921762258.XU Active CN210966389U (en) | 2019-10-18 | 2019-10-18 | Traction head of extension trolley of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210966389U (en) |
-
2019
- 2019-10-18 CN CN201921762258.XU patent/CN210966389U/en active Active
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