Quick release structure of forklift motor

Abstract

The utility model provides a kind of quick release structure of forklift motor belongs to forklift motor technical field.It solves the stability of the poor problem of motor installation when realizing quick release of existing motor quick release structure.The quick release structure of this forklift motor, forklift motor includes cantilever and motor, motor includes motor shell and motor shaft that is passed and is arranged on motor shell, output shaft is rotatably connected in cantilever, motor shaft and output shaft spline connection, quick release structure includes the connecting ring cover of being fixedly connected on cantilever, motor shell is formed in the annular limit stop shoulder along the axial direction and is protruding, bearing one is set on motor shaft, the outer ring of bearing one and limit stop shoulder abut, one end of connecting ring cover is formed in the annular positioning stop along and is protruding along the axial direction, limit stop shoulder part is inserted into positioning stop along and the outside wall of limit stop shoulder is abutted on positioning stop along radial direction.This quick release structure of forklift motor can be positioned by the cooperation of positioning stop along and limit stop shoulder, realizes the radial limit of motor shaft, and the stability after installation is improved.

Description

Technical Field

[0001] This utility model belongs to the field of forklift motor technology and relates to a quick-release structure for a forklift motor. Background Technology

[0002] When a forklift motor malfunctions after prolonged use, it needs to be disassembled for repair. However, traditional forklift motors have a transmission gear set connected to the motor shaft. If the forklift motor needs to be disassembled, the entire transmission gear set also needs to be disassembled, making the installation and removal of the forklift motor difficult.

[0003] To address the aforementioned problems, quick-release structures for motors have been developed. For example, Chinese patent application [Authorization Announcement No.: CN214828787U] discloses an integrated mechanism for a new energy forklift reducer, including a reducer housing, an input gear, and a motor assembly. The motor assembly includes a motor shaft. The input gear shaft has an axially extending shaft hole, and the motor shaft is inserted into the shaft hole and driven by a spline connection. The flange connection of the reducer housing has a through mounting hole. The flange connection of the reducer housing corresponds to the output end of the motor assembly, and the flange connection is sleeved on the outside of the input gear shaft through the mounting hole. One end of the mounting hole is installed with the motor shaft through a first bearing, and the other end of the mounting hole is installed with the input gear shaft through a second bearing.

[0004] The above structure uses a spline connection between the motor shaft and the gear shaft to achieve quick disassembly of the motor. However, since the motor requires a high degree of concentricity when rotating, the outer rings of the first and second bearings are limited by the reducer housing during installation. This means that the motor shaft relies solely on the spline connection with the gear shaft for transmission, without any other circumferential limiting force. This can easily lead to displacement deviations during operation. While achieving quick assembly and disassembly, this also makes it easy for displacement deviations to occur during the assembly of the motor and the reducer, reducing the stability of the motor after installation. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a quick-release structure for forklift motors. The technical problem to be solved by this utility model is: how to solve the problem of poor motor installation stability when implementing quick-release motor structures.

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

[0007] A quick-release structure for a forklift motor, the forklift motor including a cantilever and a motor, the motor including a motor housing and a motor shaft passing through the motor housing, an output shaft rotatably connected inside the cantilever, the motor shaft and the output shaft being splinedly connected, characterized in that the quick-release structure includes a connecting ring fixed to the cantilever, the motor housing protruding axially to form an annular limiting shoulder, a bearing being sleeved on the motor shaft, the outer ring of the bearing abutting against the limiting shoulder, one end of the connecting ring protruding axially to form an annular positioning edge, the limiting shoulder portion being inserted into the positioning edge and the outer side wall of the limiting shoulder abutting radially against the positioning edge.

[0008] By using a spline connection between the motor shaft and the output shaft, and considering that the motor shaft needs to be rotatably connected to the motor housing, a limiting shoulder is provided on the motor housing, and a bearing is fitted onto the motor shaft with its outer ring positioned within the limiting shoulder. Therefore, when disassembling the motor, the motor shaft can be directly separated from the output shaft, and the bearing is removed along with the motor. To ensure stability after quick disassembly and reinstallation, a connecting ring is fixed to the cantilever, and the limiting shoulder is inserted into the positioning edge. The outer wall of the limiting shoulder abuts radially against the positioning edge, so that after assembly, the radial positioning of the motor shaft is achieved through the cooperation of the positioning edge and the limiting shoulder, thus improving the stability after installation.

[0009] In the quick-release structure of the forklift motor described above, there is a gap between the limiting shoulder and the outer end face of the connecting ring sleeve.

[0010] The spacing is designed to avoid affecting the spline fit between the motor shaft and the output shaft during installation. The spacing allows for sufficient clearance for the installation of the motor shaft and the output shaft, ensuring that the installation of the motor shaft and the output shaft is not affected. This improves installation stability without compromising loading and unloading efficiency.

[0011] In the quick-release structure of the forklift motor described above, the other end of the connecting ring sleeve protrudes axially to form a limiting ring, and an annular limiting groove is provided on the end face of the cantilever. The limiting ring is embedded in the limiting groove, and the outer wall of the limiting ring abuts against the groove wall of the limiting groove.

[0012] The other end of the connecting ring sleeve is inserted into the limiting groove of the cantilever through a limiting ring, which realizes circumferential limiting with the cantilever and improves the stability of the connecting ring sleeve installation.

[0013] In the quick-release structure of the forklift motor described above, the outer wall of the motor housing is close to the inner wall of the connecting ring sleeve.

[0014] This structure prevents large displacement deviations of the motor housing during installation, further improving installation stability and efficiency.

[0015] In the quick-release structure of the forklift motor described above, a sealing step is provided on the inner side wall of the connecting ring sleeve, an oil seal is provided on the sealing step, a second bearing is provided inside the cantilever and sleeved on the output shaft, the oil seal is located between the first bearing and the second bearing, and the diameter of the sealing step is greater than or equal to the diameter of the limiting shoulder.

[0016] The sealing step separates the cantilever cavity from the motor housing cavity. To improve the sealing effect, the diameter of the sealing step is larger than the diameter of the limiting shoulder, so that the oil seal can completely cover the bearing, thus improving the sealing effect.

[0017] Compared with existing technologies, the quick-release structure of this forklift motor has the following advantages: When disassembling the motor, the motor shaft can be directly separated from the output shaft. At this time, the bearing is also disassembled along with the motor. In order to ensure the stability of reinstallation after quick disassembly, a connecting ring is fixed on the cantilever, and the limiting shoulder is inserted into the positioning edge. The outer wall of the limiting shoulder abuts against the positioning edge radially. After assembly, the radial limitation of the motor shaft is achieved through the cooperation of the positioning edge and the limiting shoulder, thereby improving the stability after installation. Attached Figure Description

[0018] Figure 1 This is a front view of the assembled version of this utility model.

[0019] Figure 2 It is along Figure 1 Sectional view of AA.

[0020] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0021] In the diagram, 1. cantilever; 11. limiting groove; 2. motor; 21. motor housing; 21a. limiting shoulder; 22. motor shaft; 3. output shaft; 4. connecting ring sleeve; 41. positioning edge; 42. limiting ring; 43. sealing step; 5. bearing one; 6. gap; 7. oil seal; 8. bearing two. 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 quick-release structure of this forklift motor includes a cantilever 1 and a motor 2. The motor 2 includes a motor housing 21 and a motor shaft 22 passing through the motor housing 21. An output shaft 3 is rotatably connected inside the cantilever 1. The motor shaft 22 and the output shaft 3 are splined together.

[0024] Specifically, such as Figure 2 and Figure 3 As shown, the quick-release structure includes a connecting ring sleeve 4 fixed to the cantilever 1, a motor housing 21 with an axial upward protrusion forming an annular limiting shoulder 21a, a bearing 5 sleeved on the motor shaft 22, the outer ring of the bearing 5 abutting against the limiting shoulder 21a, one end of the connecting ring sleeve 4 with an axial protrusion forming an annular positioning flange 41, the limiting shoulder 21a is partially inserted into the positioning flange 41 and the outer side wall of the limiting shoulder 21a abuts against the positioning flange 41 radially.

[0025] By using a spline connection between the motor shaft 22 and the output shaft 3, and the motor shaft 22 being rotatably connected to the motor housing 21, specifically by providing a limiting shoulder 21a on the motor housing 21, and a bearing 5 being fitted onto the motor shaft 22, with the outer ring of the bearing 5 positioned within the limiting shoulder 21a, the motor shaft 22 can be directly separated from the output shaft 3 when disassembling the motor 2. At this time, the bearing 5 is disassembled along with the motor 2. To ensure stability after quick disassembly and reinstallation, a connecting ring 4 is fixed to the cantilever 1, and the limiting shoulder 21a is partially inserted into the positioning flange 41. The outer wall of the limiting shoulder 21a abuts radially against the positioning flange 41, so that after assembly, the radial positioning of the motor shaft 22 is achieved through the cooperation of the positioning flange 41 and the limiting shoulder 21a, thus improving the stability after installation.

[0026] like Figure 3 As shown, there is a gap 6 between the limiting shoulder 21a and the outer end face of the connecting ring sleeve 4. The other end of the connecting ring sleeve 4 protrudes axially to form a limiting ring 42. A ring-shaped limiting groove 11 is opened on the end face of the cantilever 1. The limiting ring 42 is embedded in the limiting groove 11 and the outer wall of the limiting ring 42 abuts against the groove wall of the limiting groove 11. The outer wall of the motor housing 21 is close to the inner wall of the connecting ring sleeve 4.

[0027] like Figure 3 As shown, a sealing step 43 is provided on the inner side wall of the connecting ring sleeve 4, and an oil seal 7 is provided on the sealing step 43. A bearing 8 is provided inside the cantilever 1 and sleeved on the output shaft 3. The oil seal 7 is located between the bearing 5 and the bearing 8. The diameter of the sealing step 43 is greater than or equal to the diameter of the limiting shoulder 21a.

[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 quick-release structure for a forklift motor, the forklift motor comprising a cantilever (1) and a motor (2), the motor (2) comprising a motor housing (21) and a motor shaft (22) passing through the motor housing (21), an output shaft (3) rotatably connected within the cantilever (1), the motor shaft (22) and the output shaft (3) being splinedly connected, characterized in that, The quick-release structure includes a connecting ring sleeve (4) fixed to the cantilever (1), the motor housing (21) protrudes axially to form an annular limiting shoulder (21a), a bearing (5) is sleeved on the motor shaft (22), the outer ring of the bearing (5) abuts against the limiting shoulder (21a), one end of the connecting ring sleeve (4) protrudes axially to form an annular positioning flange (41), the limiting shoulder (21a) is partially inserted into the positioning flange (41) and the outer side wall of the limiting shoulder (21a) abuts radially against the positioning flange (41).

2. The quick-release structure for the forklift motor according to claim 1, characterized in that, There is a gap (6) between the limiting shoulder (21a) and the outer end face of the connecting ring (4).

3. The quick-release structure for the forklift motor according to claim 1 or 2, characterized in that, The other end of the connecting ring sleeve (4) protrudes axially to form a limiting ring (42), and a ring-shaped limiting groove (11) is opened on the end face of the cantilever (1). The limiting ring (42) is embedded in the limiting groove (11) and the outer wall of the limiting ring (42) abuts against the groove wall of the limiting groove (11).

4. The quick-release structure for the forklift motor according to claim 1 or 2, characterized in that, The outer wall of the motor housing (21) is close to the inner wall of the connecting ring sleeve (4).

5. The quick-release structure for the forklift motor according to claim 1 or 2, characterized in that, The inner wall of the connecting ring sleeve (4) is provided with a sealing step (43), and an oil seal (7) is provided on the sealing step (43). The cantilever (1) is provided with a bearing two (8) sleeved on the output shaft (3). The oil seal (7) is located between bearing one (5) and bearing two (8). The diameter of the sealing step (43) is greater than or equal to the diameter of the limiting shoulder (21a).

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