Mounting and positioning device for machine frame of milling machine

Abstract

The utility model provides a milling machine frame mounting and positioning device which comprises a cutter head frame, a milling cutter head and a cutter head bearing, the cutter head frame is provided with a cutter head bearing assembly hole, the cutter head bearing assembly hole is provided with the cutter head bearing, two sides of the milling cutter head are provided with cutter head main shafts, and the cutter head main shafts are assembled in the cutter head bearing. According to the utility model, the inclined splines are arranged on the cutterhead main shaft on the two sides of the milling and planing cutter disc, so that when the milling and planing cutter disc rotates, the assembly between the cutterhead main shaft and the cutterhead bearing does not deviate, and the milling and planing cutter disc works stably; therefore, the inclined spline acts an inward force on the cutter head bearing, the tensile force borne by the first bolt is greatly reduced, and the cutter head bearing is effectively prevented from loosening.

Description

Technical Field

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

[0002] As the main equipment for road maintenance, the milling rotor of the road milling machine rotates at high speed to mill and crush the damaged asphalt road surface, cement road surface and various roadbeds, and then pave the new road surface. In the assembly process of the milling rotor and the milling machine frame, for example, the application number CN201220013710.4 discloses a milling rotor base positioning device used in a road milling machine. The installation of the milling rotor is as shown in the application. Figure 3 As shown, however, the conventional milling rotor is usually directly supported and assembled by the bearing, and the axial deviation of the milling rotor is easy to occur during the operation of the milling rotor, resulting in instability of the operation of the milling rotor. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a milling machine frame installation positioning device to more accurately solve the above problems.

[0004] The utility model is realized by the following technical solutions:

[0005] The utility model proposes a milling machine frame installation and positioning device, comprising a cutter disc frame, a milling cutter disc and a cutter disc bearing, wherein the cutter disc frame is provided with a cutter disc bearing assembly hole, the cutter disc bearing assembly hole is equipped with a cutter disc bearing, cutter disc main shafts are arranged on both sides of the milling cutter disc, and the cutter disc main shafts are assembled in the cutter disc bearings, the cutter disc main shafts on both sides of the milling cutter disc are provided with oblique splines, which are respectively a first oblique spline and a second oblique spline, and an oblique spline groove matching the oblique splines on the cutter disc main shaft is opened on the inner wall of the bearing inner ring of the cutter disc bearing.

[0006] Furthermore, the first oblique spline and the second oblique spline are arranged in opposite directions, and the oblique spline grooves provided on the inner rings of the cutter head bearings assembled on both sides of the milling cutter head correspond to the first oblique spline and the second oblique spline.

[0007] Furthermore, an assembly ring edge is integrally formed on the outer side of the cutter disc bearing, and a plurality of bolt holes corresponding to the assembly hole of the cutter disc bearing are provided on the assembly ring edge, and the assembly ring edge is fixed in the assembly hole of the cutter disc bearing by a first bolt.

[0008] Furthermore, a carbon steel sheet is provided between the groove of the cutter disc bearing assembly hole and the assembly ring edge of the cutter disc bearing, and two sides of the carbon steel sheet are tightly fitted with the inner wall of the cutter disc bearing assembly hole groove and the assembly ring edge respectively.

[0009] Furthermore, a protective cover is provided on the outer side of the cutter head bearing, and the protective cover is fixed to the outer ring of the cutter head bearing through a second bolt.

[0010] Beneficial effects of the utility model:

[0011] 1. Due to the structural assembly reason of the oblique splines arranged on the cutter head spindles on both sides of the milling cutter head, the assembly between the cutter head spindle and the cutter head bearing will not be offset when the milling cutter head is rotating, so the milling cutter head works stably;

[0012] 2. Due to the oblique spline of the utility model, the oblique spline exerts an inward force on the cutter head bearing, which greatly reduces the tensile force borne by the first bolt and effectively prevents the cutter head bearing from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 3 It is a front cross-sectional view of the structure of the utility model;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0017] In the figure: 1. cutter head frame; 101. cutter head bearing assembly hole; 2. milling cutter head; 201. cutter head spindle; 202. first oblique spline; 203. second oblique spline; 3. cutter head bearing; 301. oblique spline groove; 302. assembly ring edge; 303. first bolt; 4. protective cover; 401. second bolt; 5. carbon steel sheet. DETAILED DESCRIPTION

[0018] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0019] Please refer to Figure 1-Figure 4The utility model proposes a milling machine frame installation and positioning device, including a cutter frame 1, a milling cutter 2 and a cutter bearing 3. The cutter frame 1 is provided with a cutter bearing assembly hole 101, and the cutter bearing 3 is assembled on the cutter bearing assembly hole 101. The cutter spindle 201 is arranged on both sides of the milling cutter 2, and the cutter spindle 201 is assembled in the cutter bearing 3. The cutter spindle 201 on both sides of the milling cutter 2 is provided with oblique splines, which are respectively the first oblique spline The inner wall of the inner ring of the cutter disc bearing 3 is provided with an oblique spline groove 301 which matches with the oblique spline on the cutter disc main shaft 201. The first oblique spline 202 and the second oblique spline 203 are arranged in opposite directions. The oblique spline groove 301 provided on the inner ring of the cutter disc bearing 3 assembled on both sides of the milling cutter disc 2 is matched with the first oblique spline 202 and the second oblique spline 203. The outer side of the cutter disc bearing 3 is integrally formed with an assembly ring edge 302. The assembly ring edge 302 is provided with a plurality of bolt holes corresponding to the assembly hole 101 of the cutter disc bearing, and the assembly ring edge 302 is fixed in the assembly hole 101 of the cutter disc bearing by the first bolt 303. Due to the structural assembly of the oblique splines arranged on the cutter shaft 201 on both sides of the milling cutter disc 2, when the milling cutter disc 2 is rotating, the assembly between the cutter shaft 201 and the cutter bearing 3 will not be offset, so the operation of the milling cutter disc 2 is stable. At the same time, due to the oblique splines, the oblique splines exert an inward force on the cutter bearing 3, which greatly reduces the tension on the first bolt 303 and effectively prevents the cutter bearing 3 from loosening.

[0020] A carbon steel sheet 5 is provided between the groove of the cutter disc bearing assembly hole 101 and the assembly ring edge 302 of the cutter disc bearing 3, and the two sides of the carbon steel sheet 5 are tightly fitted with the inner wall of the groove of the cutter disc bearing assembly hole 101 and the assembly ring edge 302 respectively. A protective cover 4 is provided on the outside of the cutter disc bearing 3, and the protective cover 4 is fixed to the bearing outer ring opening and closing of the cutter disc bearing 3 by a second bolt 401. The protective cover 4 protects the cutter disc bearing 3 and reduces the entry of dust and impurities for pollution.

[0021] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. A milling machine frame mounting and positioning device, comprising a cutter head frame (1), a milling cutter head (2) and a cutter head bearing (3), characterized in that: The cutter disc frame (1) is provided with a cutter disc bearing assembly hole (101), and a cutter disc bearing (3) is assembled on the cutter disc bearing assembly hole (101). The two sides of the milling cutter disc (2) are provided with cutter disc main shafts (201), and the cutter disc main shafts (201) are assembled in the cutter disc bearings (3). The cutter disc main shafts (201) on both sides of the milling cutter disc (2) are provided with oblique splines, which are respectively a first oblique spline (202) and a second oblique spline (203). The inner wall of the inner ring of the cutter disc bearing (3) is provided with an oblique spline groove (301) that matches the oblique spline on the cutter disc main shaft (201).

2. A milling machine frame mounting and positioning device according to claim 1, characterized in that: The first oblique spline (202) and the second oblique spline (203) are arranged in opposite directions of inclination, and the oblique spline grooves (301) provided on the inner rings of the cutter head bearings (3) assembled on both sides of the milling cutter head (2) are correspondingly matched with the first oblique spline (202) and the second oblique spline (203).

3. A milling machine frame mounting and positioning device according to claim 1, characterized in that: The outer side of the cutter disc bearing (3) is integrally formed with an assembly ring edge (302), a plurality of bolt holes corresponding to the cutter disc bearing assembly hole (101) are provided on the assembly ring edge (302), and the assembly ring edge (302) is fixed in the cutter disc bearing assembly hole (101) by a first bolt (303).

4. A milling machine frame mounting and positioning device according to claim 1, characterized in that: A carbon steel sheet (5) is provided between the groove of the cutter disc bearing assembly hole (101) and the assembly ring edge (302) of the cutter disc bearing (3), and two sides of the carbon steel sheet (5) are respectively tightly fitted with the inner wall of the groove of the cutter disc bearing assembly hole (101) and the assembly ring edge (302).

5. The milling machine frame mounting and positioning device according to claim 1, characterized in that: A protective cover (4) is provided on the outer side of the cutter head bearing (3), and the protective cover (4) is fixed to the bearing outer ring of the cutter head bearing (3) by a second bolt (401).

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