A gearbox gear spindle mounting

Abstract

The utility model provides a gearbox gear spindle mounting bracket, including A support clamping plate, the same shape's clamping recess is provided with to A support clamping plate and B support clamping plate opposite side, and the inner wall of clamping recess is provided with the convex; Two locking screw rods are installed in the screw hole of A support clamping plate and B support clamping plate setting, and A support clamping plate and B support clamping plate outside all integrative settings have fixed side plate, and the sliding axle of B support clamping plate setting and the sliding slot of A support clamping plate slide together in fit, the utility model discloses adopting A, B support clamping plate split design, and through sliding axle and sliding slot guide splicing, cooperate fast to disassemble and assemble with up and down locking screw rod, and it is convenient for maintenance, and the convex of clamping recess inner wall increases friction and adapts multi -bearing, and the fixed side plate force transmission to the shell, promotes transmission accuracy and support stability, reduces the cost.

Description

Technical Field

[0001] This utility model belongs to the field of spindle mounting technology, and in particular relates to a gearbox gear spindle mounting bracket. Background Technology

[0002] During gearbox operation, the stable support of the gear spindle directly affects transmission accuracy, operating noise, and service life. In existing technologies, the gear spindle mounting structure often uses an integral bearing housing or end cover for direct fixation, which presents the following problems:

[0003] The integral bearing housing requires the spindle and bearing to be installed as a whole, which is difficult to operate in the small gearbox housing. Especially when the bearing is worn and needs to be replaced, the entire spindle assembly often needs to be disassembled, which is time-consuming, labor-intensive and has high maintenance costs.

[0004] Traditional split-type installation structures lack precise guidance and positioning, and the bearing clamp coaxiality deviation is prone to occur during splicing, resulting in radial runout when the spindle is running, which aggravates gear meshing impact and bearing wear.

[0005] The existing mounting brackets have fixed bearing bayonet sizes, which cannot be compatible with bearings of different specifications. When the gearbox needs to be adapted to multiple spindle parameters, the mounting brackets need to be redesigned and manufactured, resulting in low versatility and increased production costs.

[0006] Therefore, it is essential to invent a gearbox gear spindle mounting bracket. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a gearbox gear spindle mounting bracket, including an A support plate, a B support plate, a locking recess, a protrusion, locking screws, screw holes, a fixed side plate, a sliding shaft, and a sliding groove. The A support plate and the B support plate have locking recesses of the same shape on opposite sides, and the inner wall of the locking recess is provided with the protrusion. Two locking screws are installed in the screw holes provided in the A support plate and the B support plate. The fixed side plate is integrally provided on the outer side of both the A support plate and the B support plate. The sliding shaft provided in the B support plate is slidably engaged with the sliding groove of the A support plate.

[0008] Preferably, the locking recesses of the A support plate and the B support plate are combined to form the bearing bay of the main shaft. The locking recess is a semi-circular recess, and the inner wall of the locking recess is provided with a plurality of protrusions at equal intervals.

[0009] Preferably, the axes of the screw holes on the A support plate and the B support plate are on the same horizontal line. The B support plate has a through screw hole, while the A support plate has a non-through screw hole. The locking screw tightly locks and fixes the A support plate and the B support plate together through the screw hole.

[0010] Preferably, the fixed side plates on which the A support plate and B support plate are installed are provided with mounting holes, and the fixed side plates are fixed to the internal ribs of the gearbox by bolts.

[0011] Preferably, the A support plate and the B support plate are respectively provided with a sliding shaft and a sliding groove at opposite positions, and the screw hole, the sliding shaft and the sliding groove are located above and below the locking recess.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model, through the separate design of support plate A and support plate B, combined with the sliding fit of the sliding shaft and the sliding groove, enables the quick snap-fit ​​installation of bearings without the need to disassemble the main shaft as a whole; during maintenance, only the locking screw needs to be loosened to separate the plate, making it easy to replace the bearing or plate individually, greatly reducing the difficulty of operation and maintenance costs.

[0014] The guide fit between the sliding shaft and the sliding groove of this utility model ensures the coaxiality of the A and B support plates when they are spliced. With the locking screws arranged symmetrically on the top and bottom, the locking force can be applied evenly, avoiding eccentricity of the bearing jaws, effectively reducing radial runout during spindle operation and improving transmission accuracy.

[0015] The protrusions on the recessed inner wall of this invention can enhance the friction with the outer ring of the bearing. By adjusting the tightening degree of the locking screw, it can adapt to the fixing requirements of bearings of different specifications within a certain range, eliminating the need to design a separate mounting bracket for each type of bearing and reducing design and manufacturing costs.

[0016] The locking screw of this utility model is located at the upper and lower positions of the embedded recess, which can balance the radial load borne by the bearing, reduce the shear force on the bolt, and reduce the risk of loosening. The fixed side plate is connected to the internal rib plate of the gearbox by bolts, which distributes the load to the gearbox housing. Combined with the tight embedding of the protrusion on the bearing, it significantly improves the support stability under high torque conditions and extends the service life of the gearbox. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0019] In the picture:

[0020] 1. Support plate A, 2. Support plate B, 3. Embedded recess, 4. Protrusion, 5. Locking screw, 6. Screw hole, 7. Fixed side plate, 8. Sliding shaft, 9. Sliding groove. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0023] As attached Figure 1 To be continued Figure 2 As shown:

[0024] This utility model provides a gearbox gear spindle mounting bracket, including an A support plate 1, a B support plate 2, a locking recess 3, a protrusion 4, a locking screw 5, a screw hole 6, a fixed side plate 7, a sliding shaft 8, and a sliding groove 9. The A support plate 1 and the B support plate 2 have locking recesses 3 of the same shape on opposite sides, and the inner wall of the locking recess 3 is provided with the protrusion 4. The two locking screws 5 are installed in the screw holes 6 provided in the A support plate 1 and the B support plate 2. The fixed side plate 7 is integrally provided on the outer side of both the A support plate 1 and the B support plate 2. The sliding shaft 8 provided in the B support plate 2 is slidably engaged with the sliding groove 9 of the A support plate 1.

[0025] Furthermore, both support plate A 1 and support plate B 2 are made of high-strength ductile iron (each has perfectly matched recesses 3 machined on its opposite sides), with each recess 3 being a semi-circular recess with a radius adapted to the outer ring of the bearing to be installed. When support plate A 1 and support plate B 2 are mated, the two semi-circular recesses 3 precisely fit together to form a complete circular bearing bay, used to accommodate and position the outer ring of the spindle bearing. The inner wall of the recess 3 has 3-4 protrusions 4 integrally and equidistantly arranged along the circumferential direction. Each protrusion 4 is a strip-shaped structure with an isosceles trapezoidal cross-section, made of the same material as the plate. The contact between the protrusions 4 and the bearing outer ring surface increases friction, preventing circumferential slippage of the bearing during high-speed operation. Simultaneously, the elastic deformation of the protrusions 4 compensates for minor assembly errors, improving the stability of the mounting.

[0026] Furthermore, screw holes 6 are machined at corresponding positions on support plate A 1 and support plate B 2. The axes of the two sets of screw holes 6 are collinear and on the same horizontal line to ensure that the locking screw 5 is subjected to balanced force. Among them, the screw hole 6 on support plate B 2 is a through hole (the hole diameter matches the nominal diameter of the locking screw 5, such as M10), and the hole wall is machined with internal threads that are compatible with the locking screw 5; the screw hole 6 on support plate A 1 is a blind hole (the depth is 3-5mm longer than the screw length of the locking screw 5 to avoid jamming), and it is also machined with matching internal threads. The locking screw 5 is made of 45# steel with heat treatment. After passing through the through screw hole 6 of support plate B 2, it is threadedly connected to the blind screw hole 6 of support plate A 1. By tightening the locking screw 5, the mating surfaces of support plate A 1 and support plate B 2 can be tightly fitted, thereby firmly clamping the outer ring of the bearing in the bearing bay formed by the locking recess 3 and preventing the bearing from moving axially.

[0027] Furthermore, the outer walls of both support plate A 1 and support plate B 2 are integrally cast and connected to the fixed side plate 7. The fixed side plate 7 is a rectangular steel plate with a thickness of 8-12mm (the same material as the support plate), and its plane is perpendicular to the axis of the insertion recess 3, ensuring that the force direction is consistent with the load transmission path. The fixed side plate 7 has 2-4 mounting holes (diameter Φ8-Φ12mm) symmetrically machined along the vertical direction. High-strength bolts (such as 8.8 grade hexagonal socket head cap screws) can be inserted into these mounting holes to securely connect the fixed side plate 7 to the pre-set reinforcing ribs inside the gearbox. The connection between the fixed side plate 7 and the ribs can transfer the radial load and axial force borne by the bearing to the gearbox housing, preventing the support plates A and B 1 and 2 from deforming under individual stress, and improving the overall support rigidity.

[0028] Furthermore, on the mating surfaces of support plate A 1 and support plate B 2, a sliding shaft 8 and a sliding groove 9 are respectively provided above and below the fitting recess 3. The sliding shaft 8 is a cylindrical structure, integrally cast with support plate B 2, and its axis is parallel to the axis of the fitting recess 3. The sliding groove 9 is a groove adapted to the sliding shaft 8 (groove width 0.1-0.2mm larger than the diameter of the sliding shaft, groove depth 2-3mm longer than the length of the sliding shaft), opened on the mating surface of support plate A 1. The groove wall is hardened to reduce sliding wear. During assembly, the sliding shaft 8 slides along the length of the sliding groove 9, achieving precise guiding and positioning of support plates A and B 1 and 2. The screw holes 6, sliding shaft 8, and sliding groove 9 are symmetrically distributed on the upper and lower sides of the fitting recess 3, forming a "symmetrical constraint" structure, ensuring balanced force on support plates A and B 1 and 2, preventing misalignment during splicing, and further guaranteeing bearing installation accuracy.

[0029] The working principle is as follows: First, during assembly, the sliding shaft 8 of the B support plate 2 is aligned with the sliding groove 9 of the A support plate 1, and the B support plate 2 is slid along the length of the sliding groove 9 so that the mating surfaces of the A support plate 1 and the B support plate 2 gradually fit together. The initial precise positioning of the two is achieved through the cooperation of the sliding shaft 8 and the sliding groove 9, ensuring the coaxiality of the subsequent splicing of the recess 3.

[0030] Secondly, when the A support plate 1 and the B support plate 2 are aligned to the preset position, the locking recesses 3 on their opposite sides are joined together to form a complete circular bearing bay. The outer ring of the main shaft bearing is placed into the bay, and the protrusions 4 on the inner wall of the locking recess 3 contact the surface of the bearing outer ring. The structural characteristics of the protrusions 4 increase the friction with the bearing outer ring, while providing elastic compensation space for minor assembly errors.

[0031] Then, the locking screw 5 is passed through the through screw hole 6 of the B support plate 2 and screwed into the blind screw hole 6 of the A support plate 1. The locking screw 5 is tightened so that the A support plate 1 and the B support plate 2 fit tightly together. The clamping force of the two will firmly fix the outer ring of the bearing in the slot formed by the locking recess 3, preventing the bearing from moving axially during operation.

[0032] Next, using the mounting holes on the fixed side plate 7, high-strength bolts are inserted to fasten the fixed side plates 7 of the A support plate 1 and the B support plate 2 to the reinforcing ribs inside the gearbox, so that the mounting bracket as a whole forms a rigid connection with the gearbox housing. The radial load and axial force borne by the bearing are transmitted to the gearbox housing through the fixed side plate 7, avoiding the deformation of the A support plate 1 and the B support plate 2 under stress alone.

[0033] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A gearbox gear spindle mounting bracket, characterized in that, The system includes an A support plate (1), a B support plate (2), a locking recess (3), a protrusion (4), a locking screw (5), a screw hole (6), a fixed side plate (7), a sliding shaft (8), and a sliding groove (9). The A support plate (1) and the B support plate (2) have locking recesses (3) of the same shape on opposite sides. The inner wall of the locking recess (3) is provided with the protrusion (4). The two locking screws (5) are installed in the screw holes (6) provided in the A support plate (1) and the B support plate (2). The fixed side plate (7) is integrally provided on the outer side of both the A support plate (1) and the B support plate (2). The sliding shaft (8) provided in the B support plate (2) is slidably engaged with the sliding groove (9) of the A support plate (1).

2. The gearbox gear spindle mounting bracket as described in claim 1, characterized in that: The locking recesses (3) of the A support plate (1) and the B support plate (2) are combined to form the bearing slot of the main shaft. The locking recess (3) is a semi-circular recess, and the inner wall of the locking recess (3) is provided with several protrusions (4) at equal intervals.

3. The gearbox gear spindle mounting bracket as described in claim 2, characterized in that: The screw holes (6) on the A support plate (1) and the B support plate (2) are aligned on the same horizontal line. The B support plate (2) has a through screw hole (6), while the screw hole (6) on the A support plate (1) is not through. The locking screw (5) securely locks the A support plate (1) and the B support plate (2) together through the screw hole (6).

4. The gearbox gear spindle mounting bracket as described in claim 3, characterized in that: The fixed side plate (7) installed on the A support plate (1) and B support plate (2) is provided with mounting holes, and the fixed side plate (7) is fixed to the internal rib of the gearbox by bolts.

5. A gearbox gear spindle mounting bracket as described in claim 4, characterized in that: The A support plate (1) and the B support plate (2) are respectively provided with a sliding shaft (8) and a sliding groove (9) at opposite positions. The screw hole (6), the sliding shaft (8) and the sliding groove (9) are located above and below the locking recess (3).

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