Double-side pressing mechanism with self-adaptive height adjustment function
The adaptive height-adjustable double-sided clamping mechanism solves the problem of internal bearing stress damage caused by positional changes of the rotor and end cover during assembly, realizes synchronous pressing of the rotor and end cover, improves product qualification rate and reduces rework costs.
Patent Information
- Application Number
- CN202423086752.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In the traditional assembly process of new energy motors, the sequential pressing and installation of the rotor and end cover causes changes in the relative position of the end cover and rotor shaft, resulting in stress damage to the inner bearing, affecting the product qualification rate and increasing rework costs.
Design a double-sided pressing mechanism with adaptive height adjustment. Through the cooperation of telescopic cylinders, wedges and springs, the rotor and end cap are pressed synchronously to adapt to different height differences and avoid excessive squeezing and collision.
This technology enables synchronous pressing of the rotor and end caps, reducing stress damage to the inner bearings, improving product qualification rate, and lowering rework costs.
Smart Images
Figure CN223643143U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automated assembly, and specifically relates to a double-sided clamping mechanism with adaptive height adjustment. Background Technology
[0002] With the rapid development of the new energy motor industry, the requirements for product quality and assembly precision are constantly increasing. In the traditional assembly process of new energy motors, the rotor shaft is fixedly sleeved on the inner ring of the bearing inside the end cover. When the rotor and end cover are put into the housing, both the end cover and the rotor need to be pressed and installed. However, if the rotor and the end cover are pressed and installed sequentially, the relative position of the end cover and the rotor shaft will change, causing damage to the bearing inside the end cover due to stress, resulting in a decrease in product qualification rate and an increase in rework costs. Therefore, it is necessary to propose a double-sided pressing mechanism with adaptive height adjustment in order to achieve synchronous pressing of the rotor and the end cover. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a double-sided pressing mechanism with adaptive height adjustment, so as to achieve synchronous pressing of the rotor and end cap.
[0004] The objective of this utility model can be achieved through the following technical solutions:
[0005] A double-sided clamping mechanism with adaptive height adjustment, comprising a fixed plate;
[0006] A base is fixedly connected to the lower end of the fixed plate, and a first sleeve is fixed to the lower end of the base. The lower end of the first sleeve is open, and a vertically downward-placed top is slidably connected inside the first sleeve. A spring is fixed to the upper end of the top piece, and the upper end of the spring is fixed to the inner top surface of the first sleeve.
[0007] A second sleeve is fitted onto the outer peripheral wall of the first sleeve. The lower end of the second sleeve is open. The second sleeve is slidably engaged with the outer peripheral wall of the first sleeve. The second sleeve can slide along the axial direction of the first sleeve and is always located on the first sleeve. The diameter of the outer peripheral wall of the second sleeve is larger than the diameter of the outer peripheral wall of the tip. A circular pressure block is fixed on the inner peripheral wall of the second sleeve. The pressure block is placed coaxially with the tip, and the lower end of the tip slides through the pressure block.
[0008] A telescopic cylinder is fixed to the lower end of the fixed plate. The piston rod at the output end of the telescopic cylinder is horizontally oriented towards the first sleeve. A slide plate is fixed to the piston rod at the output end of the telescopic cylinder. A pair of symmetrically placed wedges are fixed to the lower end of the slide plate. The lower end of the wedges is inclined. The telescopic cylinder can push the inclined lower end of the wedges to press and contact the top of the second sleeve.
[0009] The principle and effect of the above technical solution are as follows:
[0010] When the rotor enters the housing, the fixed plate is pushed down. After the pressure block contacts the upper end of the end cover, the fixed plate continues to move down until the lower end of the tip contacts the upper end of the rotor shaft. During this process, the displacement corresponding to the relative sliding height difference between the upper end of the rotor shaft and the upper end of the end cover, and the relative sliding height difference between the second sleeve and the first sleeve, is calculated. After that, the pressure block and the tip contact the upper end of the end cover and the upper end of the rotor shaft, respectively. Then, the wedge is driven to move by the telescopic cylinder until the lower inclined surface of the wedge contacts the upper end of the second sleeve. As the fixed plate continues to move down, the pressure block and the tip simultaneously press down on the end cover and the rotor shaft, realizing the simultaneous pressing of the end cover and the rotor shaft when the rotor enters the housing. It can be used in various situations where the height difference between the upper end of the rotor shaft and the upper end of the end cover is different. With the spring setting, the collision contact between the tip and the rotor shaft can be buffered when the tip initially contacts the rotor shaft, avoiding excessive squeezing and collision between the tip and the rotor shaft.
[0011] The wedges fixed on the lower end face of the slide are set as two symmetrically placed wedges. The vertical symmetrical plane of the two wedges passes through the central axis of the first sleeve. The distance between the two wedges is greater than the diameter of the outer peripheral wall of the first sleeve, and the distance between the two wedges is less than the diameter of the outer peripheral wall of the second sleeve. The lower end face of the wedges is inclined upward along the axis of the telescopic cylinder from the end closer to the telescopic cylinder to the end farther away from the telescopic cylinder.
[0012] The upper end face of the wedge is lower than the lower end face of the base, and the lowest end of the top of the second sleeve is always higher than the lowest end of the lower inclined surface of the wedge.
[0013] The top of the second sleeve is sloping, and the sloping top of the second sleeve is parallel to the sloping bottom of the wedge.
[0014] The outer peripheral wall of the tip fits against the inner peripheral wall of the first sleeve;
[0015] A vertically downward sliding groove is provided on the inner peripheral wall of the second sleeve. The lower end of the sliding groove is higher than the lower end face of the second sleeve. A protrusion that matches the sliding groove is fixed on the outer side wall of the first sleeve. The protrusion is slidably connected in the sliding groove.
[0016] A nut is fixed on the piston rod at the output end of the telescopic cylinder, and a bolt that matches the nut is fixed on the slide plate near the end of the telescopic cylinder. The nut and the bolt are connected by threads.
[0017] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:
[0018] Fixed connection: refers to the process of connecting two separate profiles or parts into a complex part or component using fasteners such as screws, bolts and rivets.
[0019] Threaded connection: refers to the connection and fixation between objects through the interlocking of threads.
[0020] The beneficial effects of this utility model are:
[0021] 1. When the rotor enters the housing, the fixed plate is pushed down. After the pressure block abuts against the upper end of the end cover, the fixed plate continues to move down until the lower end of the tip abuts against the upper end of the rotor shaft. During this process, the displacement corresponding to the relative sliding height difference between the upper end of the rotor shaft and the upper end of the end cover is determined by the height difference between the second sleeve and the first sleeve. After that, the pressure block and the tip abut against the upper end of the end cover and the upper end of the rotor shaft, respectively. Then, the wedge is driven to move by the telescopic cylinder until the lower inclined surface of the wedge abuts against the upper end of the second sleeve. During the subsequent downward movement of the fixed plate, the pressure block and the tip simultaneously press down on the end cover and the rotor shaft, realizing the simultaneous pressing of the end cover and the rotor shaft when the rotor enters the housing. It can be used in various situations where the height difference between the upper end of the rotor shaft and the upper end of the end cover is different.
[0022] By using a spring, the collision between the tip and the rotor shaft can be buffered when the tip initially contacts the rotor shaft, thus avoiding excessive squeezing and collision between the tip and the rotor shaft.
[0023] 2. By using the telescopic cylinder, sliding plate, and wedge block in combination, when the pressure block contacts the end cover, the telescopic cylinder drives the sliding plate and wedge block to extend the required length according to the distance between the upper end of the second sleeve and the fixed plate at this time, until the inclined surface of the lower end of the wedge block abuts against the upper end of the second sleeve, thereby limiting the second sleeve and preventing the second sleeve from moving upward and causing failure of the end cover pressing. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 These are schematic diagrams of the overall structure of this utility model from different perspectives;
[0027] Figure 3 This is a schematic diagram of the spring portion of this utility model. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] This combination Figures 1 to 3 This describes an embodiment of an adaptive height-adjustable double-sided clamping mechanism. Specifically, the adaptive height-adjustable double-sided clamping mechanism is constructed as a split structure, comprising a base 200, a first sleeve 300, a tip 400, a spring 500, a second sleeve 600, a pressure block 700, a telescopic cylinder 800, and a wedge 802. When the rotor enters the housing, the fixed plate 100 is driven to move downwards. After the pressure block 700 contacts the upper end of the end cover, the fixed plate 100 continues to move downwards, causing the lower end of the tip 400 to contact the upper end of the rotor shaft. During this process, the displacement corresponds to the relative sliding height difference between the second sleeve 600 and the first sleeve 300 based on the height difference between the upper end of the rotor shaft and the upper end of the end cover. Afterwards, the pressure block 700... 0. The tip 400 abuts against the end cover and the upper end of the rotor shaft respectively. Then, the wedge 802 is driven to move by the telescopic cylinder 800 until the lower inclined surface of the wedge 802 abuts against the upper end of the second sleeve 600. As the fixing plate 100 continues to move downward, the pressure block 700 and the tip 400 simultaneously press down on the end cover and the rotor, realizing the simultaneous pressing of the end cover and the rotor shaft when the rotor enters the box. It can be used in various situations where the upper end of the rotor shaft and the upper end of the end cover have different height differences. With the setting of the spring 500, the collision contact between the tip 400 and the rotor shaft can be buffered when the tip 400 initially abuts against the rotor shaft, avoiding excessive squeezing and collision between the tip 400 and the rotor shaft.
[0030] Please refer to Figures 1 to 3 A double-sided clamping mechanism with adaptive height adjustment, including a fixed plate 100;
[0031] A base 200 is fixedly connected to the lower end of the fixed plate 100. A first sleeve 300 is fixed to the lower end of the base 200. The lower end of the first sleeve 300 is open. A vertically downward-placed top 400 is slidably connected inside the first sleeve 300. A spring 500 is fixed to the upper end of the top piece. The upper end of the spring 500 is fixed to the inner top surface of the first sleeve 300.
[0032] A second sleeve 600 is fitted on the outer peripheral wall of the first sleeve 300. The lower end of the second sleeve 600 is open. The second sleeve 600 is slidably engaged with the outer peripheral wall of the first sleeve 300. The second sleeve 600 can slide along the axial direction of the first sleeve 300, and the second sleeve 600 is always located on the first sleeve 300. The diameter of the outer peripheral wall of the second sleeve 600 is larger than the diameter of the outer peripheral wall of the tip 400. A circular pressure block 700 is fixed on the inner peripheral wall of the second sleeve 600. The pressure block 700 is placed coaxially with the tip 400, and the lower end of the tip 400 slides through the pressure block 700.
[0033] A telescopic cylinder 800 is fixed to the lower end of the fixed plate 100. The piston rod at the output end of the telescopic cylinder 800 is horizontally oriented towards the first sleeve 300. A slide plate 801 is fixed to the piston rod at the output end of the telescopic cylinder 800. A pair of symmetrically placed wedges 802 are fixed to the lower end of the slide plate 801. The lower end of the wedges 802 is inclined. The telescopic cylinder 800 can push the inclined lower end of the wedges 802 to press and contact the top of the second sleeve 600.
[0034] This application is used in conjunction with existing press equipment. When in use, the fixed plate 100 is connected to the existing press equipment, and the press equipment drives the fixed plate 100 to move up and down.
[0035] When the rotor enters the housing, the drive plate 100 moves downward. After the pressure block 700 contacts the upper end of the end cover, the plate 100 continues to move downward, causing the lower end of the tip 400 to contact the upper end of the rotor. During this process, the displacement corresponds to the relative sliding height difference between the second sleeve 600 and the first sleeve 300, based on the height difference between the upper end of the rotor and the upper end of the end cover. Afterward, the pressure block 700 and the tip 400 contact the end cover and the upper end of the rotor, respectively. Then, the telescopic cylinder 800 drives the wedge block 802 to move until the lower inclined surface of the wedge block 802 contacts the second... As the upper end of the sleeve 600 abuts and the subsequent fixing plate 100 continues to move downward, the pressure block 700 and the tip 400 simultaneously press down on the end cover and the rotor, achieving simultaneous pressing of the end cover and the rotor when the rotor enters the housing. This effectively reduces damage to the bearings inside the end cover due to additional force and is applicable to various situations where the height difference between the upper end of the rotor shaft and the upper end of the end cover is different. With the spring 500, when the tip 400 initially abuts the rotor, the collision contact between the tip 400 and the rotor is buffered, avoiding excessive squeezing and collision between the tip 400 and the rotor.
[0036] During the pressing process, in order to limit the second sleeve 600 and prevent it from moving upwards and causing failure of the pressing of the end cap, two wedges 802 fixed to the lower end face of the slide plate 801 are symmetrically placed. The vertical symmetrical plane of the two wedges 802 passes through the central axis of the first sleeve 300. The distance between the two wedges 802 is greater than the diameter of the outer peripheral wall of the first sleeve 300 and less than the diameter of the outer peripheral wall of the second sleeve 600. The lower end face of the wedges 802 is positioned along the axis of the telescopic cylinder 800 from the side closest to the extension cylinder. The retractable cylinder 800 is placed at an angle upwards away from the telescopic cylinder 800. During pressing, the second sleeve 600 and the pressing block 700 move downwards until the pressing block 700 contacts the end cover. Based on the distance between the upper end of the second sleeve 600 and the fixed plate 100 at this time, the telescopic cylinder 800 drives the sliding plate 801 and the wedge 802 to extend to the required length until the inclined surface of the lower end of the wedge 802 abuts against the upper end of the second sleeve 600, thereby limiting the second sleeve 600 and preventing the second sleeve 600 from moving upwards and causing failure of pressing the end cover.
[0037] The upper end face of the wedge 802 is lower than the lower end face of the base 200, and the lowest end of the top of the second sleeve 600 is always higher than the lowest end of the lower inclined surface of the wedge 802; effectively ensuring that the wedge 802 squeezes and limits the upper end of the second sleeve 600.
[0038] To improve the uniformity of force distribution at the upper end of the second sleeve 600, the top of the second sleeve 600 is inclined, and the inclined surface at the top of the second sleeve 600 is placed parallel to the inclined surface at the lower end of the wedge block 802; this increases the contact area between the inclined surface at the lower end of the wedge block 802 and the top of the second sleeve 600, thereby improving the uniformity of force distribution at the upper end of the second sleeve 600.
[0039] The outer peripheral wall of the tip 400 fits into the inner peripheral wall of the first sleeve 300, which can improve the guidance of the tip 400 during its lifting and moving process.
[0040] A vertically downward sliding groove 601 is provided on the inner peripheral wall of the second sleeve 600. The lower end of the sliding groove 601 is higher than the lower end face of the second sleeve 600. A protrusion 301 that matches the sliding groove 601 is fixed on the outer wall of the first sleeve 300. The protrusion 301 is slidably connected in the sliding groove 601. The sliding groove 601 and the protrusion 301 are matched to improve the guiding performance of the second sleeve 600 during the lifting and moving process, and at the same time prevent the second sleeve 600 from rotating around its own axis.
[0041] The piston rod at the output end of the telescopic cylinder 800 is detachably connected to the slide plate 801, so as to facilitate the disassembly and replacement of the slide plate 801 and the wedge block 802.
[0042] A nut 803 is fixed on the piston rod at the output end of the telescopic cylinder 800, and a bolt that matches the nut 803 is fixed on the end of the slide plate 801 near the telescopic cylinder 800. The nut 803 and the bolt are threaded together. The connection between the nut 803 and the bolt is the preferred method for the detachable connection between the piston rod and the slide plate 801 in this application.
[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.
Claims
1. A double-sided clamping mechanism with adaptive height adjustment, comprising a fixed plate (100), characterized in that: A base (200) is fixedly connected to the lower end of the fixed plate (100), and a first sleeve (300) is fixed to the lower end of the base (200). The lower end of the first sleeve (300) is open, and a vertically downward-placed top (400) is slidably connected inside the first sleeve (300). A spring (500) is fixed to the upper end of the top piece, and the upper end of the spring (500) is fixed to the inner top surface of the first sleeve (300). A second sleeve (600) is fitted on the outer peripheral wall of the first sleeve (300). The lower end of the second sleeve (600) is open. The second sleeve (600) is slidably engaged with the outer peripheral wall of the first sleeve (300). The second sleeve (600) is always located on the first sleeve (300). The second sleeve (600) can slide along the axial direction of the first sleeve (300). The diameter of the outer peripheral wall of the second sleeve (600) is larger than the diameter of the outer peripheral wall of the tip (400). A circular pressure block (700) is fixed on the inner peripheral wall of the second sleeve (600). The pressure block (700) is placed coaxially with the tip (400), and the lower end of the tip (400) slides through the pressure block (700). A telescopic cylinder (800) is fixed at the lower end of the fixed plate (100). The piston rod at the output end of the telescopic cylinder (800) is horizontally oriented toward the first sleeve (300). A slide plate (801) is fixed to the piston rod at the output end of the telescopic cylinder (800). A pair of symmetrically placed wedges (802) are fixed at the lower end of the slide plate (801). The lower end of the wedges (802) is inclined. The telescopic cylinder (800) can push the inclined surface of the lower end of the wedges (802) to press and contact the top of the second sleeve (600).
2. The adaptive height adjustment bilateral clamping mechanism according to claim 1, characterized in that, Two wedges (802) fixed to the lower end face of the slide plate (801) are arranged symmetrically. The vertical symmetrical plane of the two wedges (802) passes through the central axis of the first sleeve (300). The distance between the two wedges (802) is greater than the diameter of the outer peripheral wall of the first sleeve (300), and the distance between the two wedges (802) is less than the diameter of the outer peripheral wall of the second sleeve (600). The inclined surface of the lower end of the wedge (802) is inclined upward along the axis of the telescopic cylinder (800) from the end closer to the telescopic cylinder (800) to the end farther away from the telescopic cylinder (800).
3. The adaptive height-adjustable double-sided clamping mechanism according to claim 2, characterized in that, The upper end face of the wedge (802) is lower than the lower end face of the base (200), and the lowest end of the top of the second sleeve (600) is always higher than the lowest end of the lower inclined surface of the wedge (802).
4. The adaptive height-adjustable double-sided clamping mechanism according to claim 3, characterized in that, The top of the second sleeve (600) is inclined, and the inclined surface at the top of the second sleeve (600) is parallel to the inclined surface at the bottom of the wedge (802).
5. The adaptive height-adjustable bilateral clamping mechanism according to claim 4, characterized in that, The outer peripheral wall of the tip (400) is in contact with the inner peripheral wall of the first sleeve (300).
6. The adaptive height-adjustable double-sided clamping mechanism according to claim 5, characterized in that, The inner peripheral wall of the second sleeve (600) is provided with a vertically downward sliding groove (601). The lower end of the sliding groove (601) is higher than the lower end face of the second sleeve (600). The outer wall of the first sleeve (300) is fixed with a protrusion (301) that matches the sliding groove (601). The protrusion (301) is slidably connected in the sliding groove (601).
7. The adaptive height-adjustable double-sided clamping mechanism according to claim 6, characterized in that, A nut (803) is fixed on the piston rod at the output end of the telescopic cylinder (800), and a bolt that matches the nut (803) is fixed on the end of the slide plate (801) near the telescopic cylinder (800). The nut (803) and the bolt are threadedly connected.