Milling excavator

Abstract

The utility model discloses a milling excavator which comprises a milling excavator assembly, and the milling excavator assembly comprises an output shaft and a shell fixedly connected to the outer surface of the output shaft. The sealing assembly comprises a sealing ring, a first limiting ring, a second limiting ring, a baffle ring, a first fixing bolt and a second fixing bolt; the sealing ring sleeves the inner side of the shell, the first limiting ring is fixedly connected to the outer surface of the output shaft, the second limiting ring is fixedly connected to the inner side face of the shell, the baffle ring sleeves the outer surface of the output shaft, the first fixing bolt penetrates through the baffle ring and extends downwards, and the second fixing bolt penetrates through the outer side face of the sealing ring. The utility model solves the problems that when the output shaft of the existing milling excavator is sealed, a sealing gasket is usually fixed on the outer surface of the output shaft to seal the output shaft, and the sealing gasket is easy to move on the outer surface of the output shaft due to the bad use environment of the milling excavator, so that the sealing performance of the output shaft is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of milling and digging machines, in particular to a milling and digging machine. Background Art

[0002] Drum cutter is a kind of machine that can be installed on any type of hydraulic excavator, which can effectively replace common configurations such as bucket, breaker, hydraulic shear, etc. It is used in open-pit coal mines, tunnel excavation and contour correction, channel trench milling, asphalt concrete road milling, rock frozen soil milling, tree root milling, etc. When the output shaft of the milling machine is in use, it needs to be sealed because external debris will affect the service life of the output shaft.

[0003] However, it still has the following disadvantages in actual use:

[0004] When sealing the output shaft of an existing milling machine, a sealing gasket is usually fixed on the outer surface of the output shaft to seal it. Due to the harsh operating environment of the milling machine, the sealing gasket is easy to move on the outer surface of the output shaft, thereby affecting the sealing of the output shaft.

[0005] Therefore, a new milling machine is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a milling and digging machine to solve the problem proposed in the above background technology that when the output shaft of the existing milling and digging machine is sealed, a sealing gasket is usually fixed on the outer surface of the output shaft to seal it. Since the operating environment of the milling and digging machine is relatively harsh, the sealing gasket is easy to move on the outer surface of the output shaft, thereby affecting the sealing of the output shaft.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a milling excavator, comprising:

[0009] A milling and digging machine assembly, the milling and digging machine assembly comprising an output shaft and a housing fixedly connected to an outer surface of the output shaft;

[0010] A sealing assembly, the sealing assembly comprising a sealing ring, a first limiting ring, a second limiting ring, a retaining ring, a first fixing bolt and a second fixing bolt;

[0011] The sealing ring is sleeved on the inner side of the shell, the first limiting ring is fixedly connected to the outer surface of the output shaft, the second limiting ring is fixedly connected to the inner side of the shell, the retaining ring is sleeved on the outer surface of the output shaft, the first fixing bolt passes through the retaining ring and extends downward, and the second fixing bolt passes through the outer side of the sealing ring.

[0012] Furthermore, the milling machine assembly also includes a transmission box and a milling head;

[0013] The output shaft is fixedly connected to the inner position of the lower end of the transmission box, and the milling head is fixedly connected to the outer surface position of the shell.

[0014] Furthermore, the sealing ring is a Z-shaped structure, and a hollow structure is provided at the lower end of the sealing ring relative to the first limiting ring.

[0015] Furthermore, the upper end of the sealing ring has a hollow structure opened relative to the second limiting ring, and the outer side of the upper end of the sealing ring has a hollow structure opened relative to the second fixing bolt.

[0016] Furthermore, the retaining ring is located inside the sealing ring, and the lower end of the first fixing bolt is located inside the output shaft.

[0017] Furthermore, it also includes a detection component, which includes a through hole, a movable column, a sealing gasket, a support rod and a gas flow sensor;

[0018] The through holes are opened on both sides of the shell, the movable column is threadedly connected to the inner position of the through hole, the sealing gasket is fixedly connected to the inner position of the movable column, the support rod is fixedly connected to the inner position of the through hole, and the gas flow sensor is fixedly connected to the center position of the support rod.

[0019] Furthermore, the gas flow sensor is located inside the through hole, and corresponding thread structures are provided on the inner side surface of the through hole and the outer surface of the movable column.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. The utility model sets a sealing assembly, limits the upper and lower ends of the sealing ring by a first limiting ring and a second limiting ring respectively, thereby preventing the sealing ring from moving, supports the retaining ring by a first fixing bolt, and fixes the sealing ring by a retaining ring and a second fixing bolt, thereby further fixing the position of the sealing ring.

[0022] 2. Based on beneficial effect 1, a detection component is set up, air with a certain flow rate is injected into the through hole, and the air is discharged outward from the through hole at the other end, and a gas flow sensor is used to measure the air flow rate of the air inlet through hole and the air outlet through hole respectively, so as to detect the sealing state of the sealing ring.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a cross-sectional view of the utility model;

[0026] Figure 2 This is a structural diagram of the milling machine components of the utility model;

[0027] Figure 3 This is an enlarged view of point A of the utility model;

[0028] Figure 4 It is an enlarged view of point B of the present utility model.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 11. Transmission box; 12. Output shaft; 13. Housing; 14. Milling head; 21. Sealing ring; 22. First limiting ring; 23. Second limiting ring; 24. Retaining ring; 25. First fixing bolt; 26. Second fixing bolt; 31. Through hole; 32. Movable column; 33. Sealing pad; 34. Support rod; 35. Gas flow sensor. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1-3 As shown, this embodiment is a milling machine, comprising:

[0036] The milling machine assembly includes an output shaft 12 and a housing 13 fixedly connected to the outer surface of the output shaft 12;

[0037] A sealing assembly, the sealing assembly comprising a sealing ring 21, a first limiting ring 22, a second limiting ring 23, a retaining ring 24, a first fixing bolt 25 and a second fixing bolt 26;

[0038] The sealing ring 21 is sleeved on the inner side of the housing 13, the first limiting ring 22 is fixedly connected to the outer surface of the output shaft 12, the second limiting ring 23 is fixedly connected to the inner side of the housing 13, the retaining ring 24 is sleeved on the outer surface of the output shaft 12, the first fixing bolt 25 penetrates the retaining ring 24 and extends downward, and the second fixing bolt 26 penetrates the outer side of the sealing ring 21;

[0039] The sealing ring 21 is used to seal between the output shaft 12 and the housing 13, the first limiting ring 22 is used to limit the lower end of the sealing ring 21, the second limiting ring 23 is used to limit the upper end of the sealing ring 21, the retaining ring 24 is used to block the outer side of the sealing ring 21, the first fixing bolt 25 is used to fix the retaining ring 24, and the second fixing bolt 26 is used to fix the upper end of the sealing ring 21;

[0040] The milling machine assembly also includes a transmission box 11 and a milling head 14;

[0041] The output shaft 12 is fixedly connected to the inner position of the lower end of the transmission box 11, and the milling head 14 is fixedly connected to the outer surface position of the housing 13;

[0042] The transmission box 11 is used to drive the output shaft 12 to rotate, the output shaft 12 is used to drive the housing 13 to rotate, and the housing 13 is used to drive the milling head 14 to rotate;

[0043] The sealing ring 21 is a Z-shaped structure, and the lower end of the sealing ring 21 has a hollow structure opened relative to the first limiting ring 22;

[0044] The inner side surface of the sealing ring 21 is in contact with the outer surface of the output shaft 12;

[0045] The upper end of the sealing ring 21 has a hollow structure opened relative to the second limiting ring 23, and the outer side of the upper end of the sealing ring 21 has a hollow structure opened relative to the second fixing bolt 26;

[0046] The bottom end of the sealing ring 21 is located above the first limiting ring 22, and the top end of the sealing ring 21 is located below the second limiting ring 23;

[0047] The retaining ring 24 is located inside the sealing ring 21, and the lower end of the first fixing bolt 25 is located inside the output shaft 12;

[0048] The first fixing bolt 25 penetrates the retaining ring 24 to fix the retaining ring 24 on the outer surface of the output shaft 12;

[0049] Working principle: When the output shaft 12 needs to be sealed, the first limiting ring 22 is fixed on the outer surface of the output shaft 12, and the second limiting ring 23 is fixed on the inner side of the outer shell 13. At the same time, the sealing ring 21 is fixed on the outer sides of the first limiting ring 22 and the second limiting ring 23 respectively, and then the retaining ring 24 is fixed on the outer surface of the output shaft 12 by the first fixing bolt 25, and is located on the outer side of the sealing ring 21, and the second fixing bolt 26 is used to fix the upper end of the sealing ring 21 and the inner side of the outer shell 13. The sealing ring 21 can be fixed in the middle position between the output shaft 12 and the outer shell 13, so as to seal the output shaft 12.

[0050] See also Figure 4 As shown, this embodiment is based on the above embodiment and also includes:

[0051] A detection component, the detection component includes a through hole 31, a movable column 32, a sealing gasket 33, a support rod 34 and a gas flow sensor 35;

[0052] The through holes 31 are opened at both sides of the housing 13, the movable column 32 is threadedly connected to the inner position of the through hole 31, the sealing gasket 33 is fixedly connected to the inner position of the movable column 32, the support rod 34 is fixedly connected to the inner position of the through hole 31, and the gas flow sensor 35 is fixedly connected to the central position of the support rod 34;

[0053] The through hole 31 is used to inject air into the housing 13, the movable column 32 is used to support the sealing gasket 33, the sealing gasket 33 is used to seal the through hole 31, the support rod 34 is used to support the gas flow sensor 35, and the gas flow sensor 35 is used to measure the air flow rate;

[0054] The gas flow sensor 35 is located inside the through hole 31, and the inner side of the through hole 31 and the outer surface of the movable column 32 are provided with corresponding thread structures;

[0055] Through the threaded structure, the movable column 32 can be fixed inside the through hole 31 or removed from the through hole 31;

[0056] Working principle: When it is necessary to judge the sealing state of the sealing ring 21, the movable column 32 is taken out from the inside of the through hole 31, and the sealing gasket 33 is taken out from the inside of the through hole 31. At this time, air with a certain flow rate is injected into the through hole 31 at one end, and the air is discharged to the outside through the through hole 31 at the other end inside the shell 13. During this process, the gas flow sensor 35 measures the air flow rate inside the through holes 31 at both ends. When the flow rates measured by the two sets of gas flow sensors 35 are the same, the sealing effect of the surface sealing ring 21 is good. When the flow rates are different, it means that the sealing performance of the sealing ring 21 is poor.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A milling machine, characterized in that: include: A milling and drilling machine assembly, the milling and drilling machine assembly comprising an output shaft (12) and a housing (13) fixedly connected to an outer surface of the output shaft (12); A sealing assembly, the sealing assembly comprising a sealing ring (21), a first limiting ring (22), a second limiting ring (23), a retaining ring (24), a first fixing bolt (25) and a second fixing bolt (26); The sealing ring (21) is sleeved on the inner side of the housing (13), the first limiting ring (22) is fixedly connected to the outer surface of the output shaft (12), the second limiting ring (23) is fixedly connected to the inner side of the housing (13), the retaining ring (24) is sleeved on the outer surface of the output shaft (12), the first fixing bolt (25) passes through the retaining ring (24) and extends downward, and the second fixing bolt (26) passes through the outer side of the sealing ring (21).

2. A milling machine according to claim 1, characterized in that: The milling machine assembly also includes a transmission box (11) and a milling head (14); The output shaft (12) is fixedly connected to an inner position at the lower end of the transmission box (11), and the milling head (14) is fixedly connected to an outer surface position of the outer shell (13).

3. A milling machine according to claim 1, characterized in that: The sealing ring (21) is a Z-shaped structure, and the lower end of the sealing ring (21) has a hollow structure opened relative to the first limiting ring (22).

4. A milling machine according to claim 1, characterized in that: The upper end of the sealing ring (21) has a hollow structure opened relative to the second limiting ring (23), and the outer side of the upper end of the sealing ring (21) has a hollow structure opened relative to the second fixing bolt (26).

5. A milling machine according to claim 1, characterized in that: The retaining ring (24) is located inside the sealing ring (21), and the lower end of the first fixing bolt (25) is located inside the output shaft (12).

6. A milling machine according to claim 1, characterized in that: Also included is a detection assembly, the detection assembly comprising a through hole (31), a movable column (32), a sealing gasket (33), a support rod (34) and a gas flow sensor (35); The through holes (31) are formed at positions on both sides of the housing (13); the movable column (32) is threadedly connected to the inner position of the through hole (31); the sealing gasket (33) is fixedly connected to the inner position of the movable column (32); the support rod (34) is fixedly connected to the inner position of the through hole (31); and the gas flow sensor (35) is fixedly connected to the central position of the support rod (34).

7. A milling machine according to claim 6, characterized in that: The gas flow sensor (35) is located inside the through hole (31), and corresponding thread structures are provided on the inner side surface of the through hole (31) and the outer surface of the movable column (32).

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