A drive wheel fixing structure of a forklift motor

Abstract

The utility model provides a kind of drive wheel fixing structure of forklift motor belongs to forklift motor technical field.It solves the problem of lower installation efficiency while installing stable of existing drive wheel fixing structure.The drive wheel fixing structure of this forklift motor, forklift motor includes installation shell and drive wheel, drive motor and the reduction gear set connected with the motor shaft of drive motor are arranged in installation shell, reduction gear set includes output shaft, and the outer side wall of output shaft has locating conical surface, this drive wheel fixing structure includes locating flange connected on drive wheel by fastener, locating flange is equipped with the inner taper hole that can be provided with output shaft, the inner wall of inner taper hole and locating conical surface are attached, the one end of output shaft and is threadedly connected with nut that is pressed on locating flange, the head of fastener and nut are located the outer end of drive wheel.The drive wheel fixing structure of this forklift motor makes installation more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of forklift motor technology and relates to a drive wheel fixing structure for a forklift motor. Background Technology

[0002] During forklift operation, the drive motor drives the reduction gear assembly to rotate. The output shaft of the reduction gear assembly is connected to the drive wheel, thus driving the drive wheel. However, the existing connection between the drive wheel and the output shaft is usually a spline connection. However, splines are subject to heat treatment deformation. In order to facilitate product assembly, a certain gap is reserved, which is not conducive to normal gear meshing. This results in noise and meshing impact when rotating at high speed.

[0003] To address the aforementioned problems, researchers have developed a torque transmission mechanism for an electric forklift drive unit, as disclosed in Chinese Patent Application No. CN215208295U. This mechanism includes a motor output shaft and a drive gear. The motor output shaft has a central axis with a communicating inner conical hole and a first threaded hole. The drive gear includes a wheel axle and a gear ring, with the gear ring coaxially fixed to one end of the wheel axle. The outer surface of the other end of the wheel axle is conical. A through hole is formed on the central axis of the wheel axle, and an internal thread, forming a second threaded hole, is formed on the wall of the through hole corresponding to the gear ring. When the conical surface of the wheel axle mates with the conical surface of the inner conical hole, a fastening bolt passes through the through hole of the wheel axle. One end of the fastening bolt is threaded to the first threaded hole, and the other end is threaded to the second threaded hole. A rubber washer is provided between the nut of the fastening bolt and the gear ring.

[0004] The above structure relies solely on the fit between the tapered surface of the axle and the tapered surface of the inner tapered hole, along with the fastening bolts on the axle, to achieve the connection between the drive gear and the output shaft. However, in this connection method, the fastening bolts are fixed to the axle, and the axle is hidden inside during installation. This makes the installation between the motor output shaft and the drive gear inconvenient, thus failing to improve installation efficiency while ensuring installation stability. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a drive wheel fixing structure for forklift motors. The technical problem to be solved by this utility model is: how to solve the problem of low installation efficiency while ensuring stable installation of existing drive wheel fixing structures.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A drive wheel fixing structure for a forklift motor includes a mounting housing and a drive wheel. The mounting housing houses a drive motor and a reduction gear set connected to the motor shaft of the drive motor. The reduction gear set includes an output shaft. The output shaft has a positioning conical surface on its outer side wall. The drive wheel fixing structure includes a positioning flange connected to the drive wheel by fasteners. The positioning flange has an inner conical hole through which the output shaft passes. The inner wall of the inner conical hole fits against the positioning conical surface. One end of the output shaft extending through the inner conical hole is threadedly connected to a nut pressed against the positioning flange. The head of the fastener and the nut are both located at the outer end of the drive wheel.

[0008] A positioning flange is installed between the output shaft and the drive wheel. The output shaft and the positioning flange are positioned using a positioning conical surface and an inner conical hole. After positioning, to improve the stability of the connection, a nut is connected to the end of the output shaft that passes through the inner conical hole. The nut is pressed onto the positioning flange, thus achieving the connection between the output shaft and the positioning flange. The positioning flange is then fixed to the drive wheel with fasteners, allowing the driving force to be transmitted from the output shaft to the drive wheel, causing the drive wheel to rotate. To improve installation efficiency, a connecting piece is added between the output shaft and the drive wheel for easy installation. The heads of the nut and the fastener are both located at the outer end of the drive wheel. During installation, the positioning flange can be installed on the drive wheel first. Since the head of the fastener is located at the outer end of the drive wheel, the installer can install it from the outer end of the drive wheel. Then, the output shaft is inserted into the positioning flange and installed using the nut located at the outer end of the drive wheel, making installation more convenient. The fasteners and nuts are both located at the outer end of the drive wheel, facilitating loading, unloading, and maintenance.

[0009] In the aforementioned drive wheel fixing structure of the forklift motor, the center of the positioning flange has a limiting part that protrudes axially, the drive wheel has a mounting hole, the limiting part is embedded in the mounting hole and fits against the hole wall of the mounting hole, and the inner conical hole is opened on the limiting part.

[0010] The setting of the limiting part allows the limiting part to be pre-positioned by first embedding it into the mounting hole when the positioning flange is fixed to the drive wheel, and then the fasteners can be installed to complete the installation between the drive wheel and the positioning flange. It also increases the length of the inner tapered hole, making the fit between the output shaft and the positioning flange more stable, which improves both the ease of installation and the stability of installation.

[0011] In the aforementioned drive wheel fixing structure of the forklift motor, the positioning cone surface is radially inclined inward from one end near the reduction gear set to the other end.

[0012] The tilt angle of the positioning cone surface creates an outward pulling force on the positioning flange when the nut locks one end of the output shaft onto the positioning flange. This allows the positioning cone surface to be pressed more stably against the inner cone hole, improving installation stability.

[0013] In the above-mentioned drive wheel fixing structure of the forklift motor, the positioning flange is disc-shaped, the drive wheel includes a connecting part in the shape of an annular plate, and the end face of the positioning flange is attached to the end face of the connecting part and fixedly connected by fasteners.

[0014] By fitting the end face of the positioning flange to the connecting part, the stability of the connection between the drive wheel and the positioning flange can be further improved.

[0015] In the aforementioned forklift motor drive wheel fixing structure, multiple fasteners are provided, and the multiple fasteners are evenly distributed along the circumference of the positioning flange.

[0016] The use of multiple fasteners enhances the connection strength between the positioning flange and the drive wheel, further improving installation stability.

[0017] Compared with the prior art, the present invention has the following advantages: by adding a connecting piece between the output shaft and the drive wheel, installation is facilitated. Furthermore, the heads of the nut and fastener are both located at the outer end of the drive wheel. During installation, the positioning flange can be installed on the drive wheel first. Since the head of the fastener is located at the outer end of the drive wheel, the installer can perform the installation from the outer end of the drive wheel. Then, the output shaft is inserted into the positioning flange and installed using the nut located at the outer end of the drive wheel, making installation more convenient. The fastener and nut are both located at the outer end of the drive wheel, facilitating loading, unloading, and maintenance. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention.

[0019] Figure 2 yes Figure 1 Sectional view along the middle AA.

[0020] Figure 3 This is a partial exploded view of this utility model.

[0021] In the figure, 1 is the mounting shell; 2 is the drive wheel; 21 is the mounting hole; 22 is the connecting part; 3 is the drive motor; 4 is the reduction gear set; 41 is the output shaft; 41a is the positioning conical surface; 5 is the positioning flange; 51 is the inner conical hole; 52 is the limiting part; 6 is the fastener; and 7 is the nut. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figure 1 and Figure 2 As shown, the drive wheel fixing structure of this forklift motor includes a mounting housing 1 and a drive wheel 2. The mounting housing 1 is equipped with a drive motor 3 and a reduction gear set 4 connected to the motor shaft of the drive motor 3. The reduction gear set 4 includes an output shaft 41.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the outer wall of the output shaft 41 has a positioning conical surface 41a. The drive wheel fixing structure includes a positioning flange 5 connected to the drive wheel 2 by a fastener 6. The positioning flange 5 has an inner conical hole 51 through which the output shaft 41 can pass. The inner wall of the inner conical hole 51 fits against the positioning conical surface 41a. One end of the output shaft 41 that passes through the inner conical hole 51 is threadedly connected to a nut 7 that is pressed against the positioning flange 5. The head of the fastener 6 and the nut 7 are both located at the outer end of the drive wheel 2.

[0025] A positioning flange 5 is provided between the output shaft 41 and the drive wheel 2. Positioning of the output shaft 41 and the positioning flange 5 is achieved through a positioning conical surface 41a and an inner conical hole 51. To improve the stability of the connection after positioning, a nut 7 is connected to the end of the output shaft 41 that extends through the inner conical hole 51. Tightening the nut 7 onto the positioning flange 5 establishes the connection between the output shaft 41 and the positioning flange 5. The positioning flange 5 is then fixed to the drive wheel 2 using fasteners 6, allowing the driving force to be transmitted from the output shaft 41 to the drive wheel 2, causing the drive wheel 2 to rotate. This design improves installation efficiency. The design incorporates a connector between the output shaft 41 and the drive wheel 2, facilitating installation. Both the nut 7 and the fastener 6 have their heads located at the outer end of the drive wheel 2. During installation, the positioning flange can be installed on the drive wheel 2 first. Since the fastener 6's head is located at the outer end of the drive wheel 2, installation can be performed from the outer end of the drive wheel 2. The output shaft 41 is then inserted into the positioning flange 5 and installed using the nut 7 located at the outer end of the drive wheel 2, making installation even more convenient. The fastener 6 and nut 7 are both located at the outer end of the drive wheel 2, facilitating loading, unloading, and maintenance.

[0026] like Figure 2 and Figure 3 As shown, the positioning flange 5 has a limiting part 52 that protrudes axially in the middle. The drive wheel 2 has a mounting hole 21. The limiting part 52 is embedded in the mounting hole 21 and fits against the hole wall of the mounting hole 21. The inner conical hole 51 is opened on the limiting part 52. The positioning conical surface 41a is set radially inward from one end near the reduction gear set 4 to the other end.

[0027] like Figure 1 and Figure 3As shown, the positioning flange 5 is disc-shaped, and the drive wheel 2 includes a connecting part 22 in the shape of an annular plate. The end face of the positioning flange 5 is attached to the end face of the connecting part 22 and is fixedly connected by fasteners 6. Multiple fasteners 6 are provided and are evenly distributed along the circumference of the positioning flange 5.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A drive wheel fixing structure of a forklift motor, the forklift motor comprising a mounting shell (1) and a drive wheel (2), a drive motor (3) and a reduction gear set (4) connected with a motor shaft of the drive motor (3) are arranged in the mounting shell (1), the reduction gear set (4) comprises an output shaft (41), characterized in that, The output shaft (41) has a positioning cone surface (41a) on its outer side wall. The drive wheel fixing structure includes a positioning flange (5) connected to the drive wheel (2) by a fastener (6). The positioning flange (5) has an inner cone hole (51) through which the output shaft (41) can pass. The inner wall of the inner cone hole (51) fits against the positioning cone surface (41a). One end of the output shaft (41) that passes through the inner cone hole (51) is threadedly connected to a nut (7) that is pressed against the positioning flange (5). The head of the fastener (6) and the nut (7) are both located at the outer end of the drive wheel (2).

2. The drive wheel fixing structure of the forklift motor according to claim 1, characterized in that, The positioning flange (5) has a limiting part (52) that protrudes axially in the middle. The drive wheel (2) has a mounting hole (21). The limiting part (52) is embedded in the mounting hole (21) and fits against the hole wall of the mounting hole (21). The inner conical hole (51) is opened on the limiting part (52).

3. The drive wheel fixing structure of the forklift motor according to claim 1 or 2, characterized in that, The positioning cone (41a) is radially inclined inward from one end near the reduction gear set (4) to the other end.

4. The drive wheel fixing structure of the forklift motor according to claim 1 or 2, characterized in that, The positioning flange (5) is disc-shaped, and the drive wheel (2) includes a connecting part (22) in the shape of an annular plate. The end face of the positioning flange (5) is attached to the end face of the connecting part (22) and fixedly connected by fasteners (6).

5. The drive wheel fixing structure of the forklift motor according to claim 4, characterized in that, The fasteners (6) are provided in multiples, and the multiple fasteners (6) are evenly distributed along the circumference of the positioning flange (5).

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