A quick positioning structure of a guide pin of a motor end cover

Abstract

This utility model discloses a quick positioning structure for a guide pin of a motor end cover, relating to the field of motor installation technology. It includes an installation device and a hydraulic device fixed to its top wall. A housing is fixed to the output end of the hydraulic device. Two layers of limiting mechanisms are provided vertically inside the housing. Each limiting mechanism includes two rotating plates, rotatably mounted on the inner walls of the top and bottom of the housing, respectively. A horizontal limiting plate is coaxially positioned on the side of each plate that is close to the other. The limiting plate is fixed to the inner wall of the housing. In this utility model, the guide pin is clamped by a second limiting mechanism at the end of the slider through the synchronous operation of the two limiting mechanisms, achieving dual axial and radial centering positioning. The limiting mechanism moves with the hydraulic device driving the fixed rod. During the pressing process, the continuous meshing of the helical rod and gear provides a reverse torque, counteracting the deflection tendency caused by the pressing force and ensuring that the axis of the guide pin always coincides with the axis of the positioning hole.

Description

Technical Field

[0001] This utility model relates to the field of motor installation technology, specifically to a quick-positioning structure for a guide pin on a motor end cover. Background Technology

[0002] The installation of guide pins for motor end covers is a key step in motor assembly. Its core purpose is to achieve rapid alignment and fixation of the end cover with the motor frame, rotor and other components through the precise matching of the guide pins with the positioning holes of the end cover. Traditional installation processes usually include manual pre-alignment and the use of hydraulic equipment or robotic arms to press the guide pins into the positioning holes.

[0003] Traditional tooling relies solely on the outer contour of the end cap or a simple stop for positioning, without precisely aligning the guide pin itself. This results in an initial misalignment between the pin and the hole axis during pressing. When pressed in by hydraulic equipment, the guide pin may slightly deflect due to uneven force or vibration, leading to excessive local contact pressure between the pin and the hole wall, increasing the risk of pin bending.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a quick-positioning structure for the guide pin of a motor end cover, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a quick positioning structure for a guide pin of a motor end cover, including an installation device and a hydraulic device fixed to its top wall. A housing is fixed to the output end of the hydraulic device, and two layers of limiting mechanisms are provided vertically inside the housing. The limiting mechanisms include:

[0007] Two rotating plates are respectively rotatably mounted on the inner wall of the top and bottom of the housing. On the side of the two plates that are close to each other, there is a horizontal limiting plate 1 coaxially provided. The limiting plate 1 is fixed on the inner side wall of the housing. On the side wall of the limiting plate 1 away from the rotating plate, there are multiple vertically penetrating sliding channels 1 arranged in a ring array about its axis. On the side wall of the rotating plate that is close to the limiting plate 1, there are multiple guide grooves arranged in a ring array about its axis.

[0008] A slider slides within the guide groove, with the side of the slider away from the guide groove sliding within the sliding channel. The outer arc wall of the rotating plate is provided with uniform gear teeth. Multiple horizontal gears arranged in a circular array about their axial direction are meshed on the outer side of the rotating plate. The gears slide and mesh with a vertical helical rod along the axial direction. The tops of the multiple helical rods are fixed to the same fixed rod, and the top of the fixed rod is connected to a hydraulic device. A limit mechanism is horizontally fixed at one end of the slider near the axis of the rotating plate.

[0009] Furthermore, the same fixed cylinder is fixed to the side wall of the coaxially arranged gears on the outer sides of the two rotating plates, which are close to each other. The fixed cylinder is hollow along its axial direction. A sliding rod is fixedly fixed through the helical rod along the circumference of the gear. The axial length of the sliding rod is greater than the axial length of the helical rod. The fixed rod is fixed to the top of the sliding rod. A vertical buffer block is rotatably arranged at the bottom of the gear located at the bottom of the housing. The buffer block is arranged through the housing to the outside. The hydraulic device fixed to the top wall of the installation equipment includes multiple telescopic rods arranged in a ring array about its axial direction, which are fixed to the outer edge of the top of the housing. The telescopic rods all pass through the housing and are fixedly connected to the fixed rod. One of the telescopic rods is specifically a hydraulic rod one. A sliding channel two is vertically opened through the center of the top of the housing. The hydraulic rod two is coaxially fixed to the top wall of the installation equipment at the position corresponding to the sliding channel two.

[0010] Furthermore, a sliding channel three is coaxially provided through the center of the side wall of the limiting plate one and the rotating plate that are close to each other. The sliding channel three is coaxially provided with the sliding channel two. The sliding channel three does not contact the sliding channel one and the guide groove. The limiting mechanism two fixed to the end of the slider includes a piston mechanism one horizontally fixed to the end of the slider. The extension end of the piston mechanism one is horizontally rotatably connected to the vertically provided limiting plate two. Horizontal fixing tubes are fixed on both sides of the outer arc wall of the fixed end of the piston mechanism one along the horizontal direction. The length direction of the fixing tubes is consistent with the radial direction of the piston mechanism one.

[0011] Furthermore, the end of the fixed tube away from the piston mechanism one is horizontally rotatably connected to a horizontal piston mechanism two, the piston mechanism two facing the same direction as the piston mechanism one. The telescopic end of the piston mechanism two is horizontally rotatably connected to a vertically arranged limiting plate two with the same structure, and the limiting plate two and the limiting plate two set at the end of the piston mechanism one are located in the same vertical plane. Rotating grooves are opened along the vertical direction on the side wall of the multiple limiting plates two that are close to each other. The same horizontal connecting piece is rotatably connected in the rotating groove at the same horizontal height on two adjacent limiting plates two. The ends of two adjacent limiting plates two that are close to each other are rounded. The two ends of the connecting piece along its length direction are also rounded. A fixing mechanism is provided at the center of the bottom wall of the installation equipment, and the buffer block is made of flexible material.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Through the synchronous action of the double-layer limiting mechanism, the guide pin is clamped by the limiting mechanism at the end of the slider, achieving dual centering and positioning in both the axial and radial directions. The limiting mechanism moves with the hydraulic equipment driving the fixed rod. During the pressing process, the continuous meshing of the spiral rod and the gear provides a reverse torque to counteract the deflection tendency caused by the pressing force, ensuring that the axis of the guide pin and the axis of the positioning hole always coincide.

[0014] 2. Through the second limiting mechanism, it can better fit the outer surface of the guide pin. It can provide a good positioning effect, especially for some high-precision irregular pins, such as those that are generally cylindrical and have one half rectangular. The buffer block is made of flexible material to avoid damage caused by direct hard contact between the housing and the motor surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the housing in a quick-positioning structure for a guide pin of a motor end cover;

[0016] Figure 2 This is a schematic diagram of the limiting mechanism in a quick positioning structure for a guide pin of a motor end cover.

[0017] Figure 3 This is a schematic diagram of the limiting mechanism two in a quick positioning structure for a guide pin of a motor end cover;

[0018] Figure 4 An exploded view of the limiting mechanism in a quick-positioning structure for a guide pin of a motor end cover;

[0019] Figure 5 This is a schematic diagram of the spiral rod and gear in a quick positioning structure for a guide pin of a motor end cover;

[0020] Figure 6 This is a schematic diagram of the overall structure of a guide pin quick-positioning structure for an electric motor end cover.

[0021] In the picture:

[0022] 10. Installation equipment; 11. Housing; 12. Buffer block; 13. Fixing rod; 14. Helical rod;

[0023] 141. Sliding rod; 15. Gear; 16. Fixed cylinder;

[0024] 20. Limiting plate 1; 21. Rotating plate; 211. Guide groove; 22. Slider;

[0025] 30. Piston Mechanism 1; 31. Fixed Tube; 32. Piston Mechanism 2; 33. Limiting Plate 2;

[0026] 34. Connectors. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see the appendix Figure 1 To be continued Figure 6 This utility model provides a quick positioning structure for a guide pin of a motor end cover: it includes an installation device 10 and a hydraulic device fixed to its top wall. A housing 11 is fixed to the output end of the hydraulic device. Two layers of limiting mechanisms are provided vertically inside the housing 11. The limiting mechanisms include:

[0029] Two rotating plates 21 are respectively rotatably mounted on the inner wall of the top and bottom of the housing 11. On the side of the two plates that are close to each other, there is a horizontal limiting plate 20 coaxially. The limiting plate 20 is fixed on the inner wall of the housing 11. On the side wall of the limiting plate 20 away from the rotating plate 21, there are multiple vertically penetrating sliding channels arranged in a ring array about its axis. On the side wall of the rotating plate 21 that is close to the limiting plate 20, there are multiple guide grooves 211 arranged in a ring array about its axis.

[0030] A slider 22 slides in the guide groove 211. The side of the slider 22 away from the guide groove 211 slides in the sliding channel one. The outer arc wall of the rotating plate 21 is provided with uniform gear teeth. Multiple horizontal gears 15 are meshed on the outer side of the rotating plate 21 in a circular array about its axial direction. The gears 15 slide and mesh with a vertical helical rod 14 along the axial direction. The top of the multiple helical rods 14 is fixed with the same fixed rod 13. The top of the fixed rod 13 is connected to a hydraulic device. The end of the slider 22 near the axis of the rotating plate 21 is horizontally fixed with a limit mechanism two.

[0031] Two gears 15, which are coaxially arranged on the outer side of the two rotating plates 21, are fixed with the same fixed cylinder 16 on one side wall that is close to each other. The fixed cylinder 16 is hollow along its axial direction. A sliding rod 141 is fixedly passed through the gear 15 circumferentially. The axial length of the sliding rod 141 is greater than the axial length of the spiral rod 14. A fixed rod 13 is fixed to the top of the sliding rod 141. A vertical buffer block 12 is rotatably arranged at the bottom of the gear 15 located at the bottom of the housing 11. The buffer block 12 passes through the housing 11 to the outside.

[0032] The hydraulic device fixed to the top wall of the installation equipment 10 includes a plurality of telescopic rods fixed to the outer edge of the top of the housing 11 and arranged in a ring array about its axial direction. The telescopic rods all pass through the housing 11 and are fixedly connected to the fixed rod 13. One of the telescopic rods is specifically a hydraulic rod one. A sliding channel two is vertically opened through the center of the top of the housing 11. The hydraulic rod two is coaxially fixed to the top wall of the installation equipment 10 at the position corresponding to the sliding channel two.

[0033] The center of the side wall of the limiting plate 20 and the rotating plate 21 that are close to each other is provided with a sliding channel 3. The sliding channel 3 is coaxially arranged with the sliding channel 2, and the sliding channel 3 does not contact the sliding channel 1 and the guide groove 211.

[0034] It should be noted that the cooperation between the sliding channel 1 and the guide groove 211 is used to guide and limit the movement trajectory of the slider 22, so that multiple sliders 22 can move synchronously in a centripetal or centrifugal motion along the sliding channel 1, thereby controlling the further positioning of the guide pin by the limiting mechanism 2.

[0035] Hydraulic rod one, in conjunction with multiple telescopic rods, is used to control the lifting and lowering of housing 11. Hydraulic rod two is used to press the guide pin, pressing it into the corresponding positioning hole. Buffer block 12 raises the housing 11 and the motor surface in advance to avoid direct hard contact. In the initial state, hydraulic rod one is in a suspended state relative to housing 11. When buffer block 12 falls to the motor surface, hydraulic rod one presses down the fixing rod 13, thereby synchronously driving multiple spiral rods 14 to move vertically, which in turn forces the meshing gear 15 to rotate, driving the rotating plate 21 to rotate, which in turn drives multiple sliders 22 to move synchronously centripetally or centrifugally along the sliding channel one, thereby positioning the guide pin. The centripetal positioning can adapt to positioning pins of various sizes.

[0036] Please see the appendix Figure 1 To be continued Figure 6 The present invention provides a technical solution: the limiting mechanism two fixed to the end of the slider 22 includes a piston mechanism 30 horizontally fixed to the end of the slider 22, the telescopic end of the piston mechanism 30 is horizontally rotatably connected to a vertically arranged limiting plate 33, and the outer arc wall of the fixed end of the piston mechanism 30 is fixed with horizontal fixing tubes 31 on both sides opposite to each other in the horizontal direction, and the length direction of the fixing tubes 31 is consistent with the radial direction of the piston mechanism 30.

[0037] The fixed tube 31 is horizontally rotatably connected to a horizontal piston mechanism 32 at the end away from the piston mechanism 30. The piston mechanism 32 faces the same direction as the piston mechanism 30. The telescopic end of the piston mechanism 32 is horizontally rotatably connected to a vertically arranged limiting plate 33 with the same structure. The limiting plate 33 and the limiting plate 33 at the end of the piston mechanism 30 are located in the same vertical plane.

[0038] Rotating grooves are provided on the side walls of the multiple limiting plates 33 that are close to each other along the vertical direction. The two adjacent limiting plates 33 are rotatably connected to the same horizontal connecting piece 34 in the rotating grooves at the same horizontal height. The ends of the two adjacent limiting plates 33 that are close to each other are rounded. The two ends of the connecting piece 34 along its length are also rounded.

[0039] The installation device 10 has a fixing mechanism at the center of its bottom wall, and the buffer block 12 is made of flexible material.

[0040] It should be noted that: Piston mechanism 1 30 and piston mechanism 2 32 have the same structure. Taking piston mechanism 1 30 as an example, it includes piston rod 1 and piston cylinder 1 that are mutually piston-slidably connected. Piston cylinder 1 is fixed to the end of slider 22. A return spring is sleeved on the outer arc wall of piston rod 1 to assist piston rod 1 in resetting. Inert gas is pre-filled in piston cylinder 1, fixed tube 31 and piston mechanism 2 32. Fixed tube 31 and piston cylinder 1 are interconnected. The same connecting pipe is installed on the side of fixed tube 31 and piston mechanism 2 32 that are close to each other. The connecting pipe connects fixed tube 31 and piston cylinder 2 for gas conduction.

[0041] It is understandable that when the slider 22 drives the limiting mechanism 2 to move toward the guide pin, the limiting plate 2 33 located in the middle will first come into contact with the outer arc wall of the guide pin. The reaction force causes the piston rod 1 to retract into the piston cylinder 1. At this time, the gas in the piston cylinder 1 is compressed, and then the gas in the piston is pushed into the piston mechanism 2 32 through the fixed tube 31 and pushed the limiting plates 2 33 on both sides toward the outer arc wall of the guide pin to achieve further wrapping and clamping.

[0042] Furthermore, for positioning pins used in special situations, such as those with a circular cross-section at one end and a rectangular cross-section at the other end, when positioning the rectangular end, even if the middle limiting plate 2 33 will first abut against the corner of the guide pin, the limiting plates 2 33 on both sides will also be pushed against the side wall of the guide pin, thereby achieving positioning.

[0043] Furthermore, the side wall of the limiting plate 2 33 near the sliding channel 3 is provided with vertical anti-slip texture.

[0044] Working principle:

[0045] In the initial state, hydraulic rod one hoists the housing 11, and buffer block 12 prevents it from making hard contact with the motor. During positioning, hydraulic rod two presses the guide pin into the upper part of the positioning hole through sliding channel two. At the same time, hydraulic rod one drives the fixed rod 13 to descend, which drives the spiral rod 14 to mesh and rotate with the gear 15. Through the fixed cylinder 16, the upper and lower rotating plates 21 rotate synchronously. The guide groove 211 of the rotating plate 21 drives the slider 22 to move centripetally along sliding channel one, which drives the limit mechanism two to approach the guide pin.

[0046] The middle limiting plate 2 33 first abuts against the guide pin, and the reaction force compresses the gas in the piston mechanism 1 30. The gas is transmitted to the piston mechanism 2 32 through the fixed pipe 31, which pushes the two limiting plates 2 33 on both sides to expand outward simultaneously, achieving a wrapping clamping effect. The connecting piece 34 and the rounded corner design ensure that the multi-plate linkage is free from interference. It can be adapted to round or irregularly shaped guide pins. Finally, the hydraulic rod 2 completes the stamping, and the buffer block 12 absorbs the impact, completing the precise positioning of the guide pin.

Claims

1. A quick-positioning structure for a guide pin of a motor end cover, comprising an installation device (10) and a hydraulic device fixed to its top wall, wherein a housing (11) is fixed to the output end of the hydraulic device, characterized in that: The housing (11) is provided with two layers of limiting mechanisms along the vertical direction. The limiting mechanism includes: Two rotating plates (21) are respectively rotatably mounted on the inner wall of the top and bottom of the housing (11). On the side of the two plates that are close to each other, there is a horizontal limiting plate (20) coaxially. The limiting plate (20) is fixed on the inner side wall of the housing (11). On the side wall of the limiting plate (20) away from the rotating plate (21), there are multiple vertical sliding channels arranged in a ring array about its axis. On the side wall of the rotating plate (21) close to the limiting plate (20), there are multiple guide grooves (211) arranged in a ring array about its axis. A slider (22) slides in the guide groove (211). The side of the slider (22) away from the guide groove (211) slides in the sliding channel. The outer arc wall of the rotating plate (21) is provided with uniform gear teeth. Multiple horizontal gears (15) are meshed on the outer side of the rotating plate (21) in a ring array about its axial direction. The gears (15) slide and mesh with a vertical helical rod (14) along the axial direction. The top of the multiple helical rods (14) is fixed with the same fixed rod (13). The top of the fixed rod (13) is connected to a hydraulic device. The end of the slider (22) near the axis of the rotating plate (21) is horizontally fixed with a limit mechanism.

2. The guide pin quick positioning structure for a motor end cover as described in claim 1, characterized in that: The two rotating plates (21) are coaxially arranged gears (15) on the outer side of each other and are fixed with the same fixed cylinder (16). The fixed cylinder (16) is hollow along its axial direction. The spiral rod (14) is coaxially fixed with a sliding rod (141) through it along the circumference of the gear (15). The axial length of the sliding rod (141) is greater than the axial length of the spiral rod (14). The fixed rod (13) is fixed to the top of the sliding rod (141). A vertical buffer block (12) is rotatably arranged at the bottom of the gear (15) at the bottom of the housing (11). The buffer block (12) passes through the housing (11) to the outside.

3. The guide pin quick positioning structure for a motor end cover as described in claim 1, characterized in that: The hydraulic device fixed to the top wall of the installation device (10) includes multiple telescopic rods that are arranged in a ring array about the axial direction and fixed to the outer edge of the top of the housing (11). The telescopic rods all pass through the housing (11) and are fixedly connected to the fixed rod (13). One of the telescopic rods is a hydraulic rod one. A sliding channel two is vertically opened through the center of the top of the housing (11). The hydraulic rod two is coaxially fixed at the position of the top wall of the installation device (10) corresponding to the sliding channel two.

4. The quick-positioning structure for the guide pin of a motor end cover as described in claim 1, characterized in that: The center of the side wall of the limiting plate (20) and the rotating plate (21) are both coaxially connected to each other, and the sliding channel three is coaxially connected with the sliding channel two. The sliding channel three does not contact the sliding channel one and the guide groove (211).

5. The guide pin quick positioning structure for a motor end cover as described in claim 1, characterized in that: The limiting mechanism two fixed to the end of the slider (22) includes a piston mechanism one (30) horizontally fixed to the end of the slider (22). The extension end of the piston mechanism one (30) is horizontally rotatably connected to a vertically arranged limiting plate two (33). Horizontal fixing tubes (31) are fixed on both sides of the outer arc wall of the fixed end of the piston mechanism one (30) in the horizontal direction. The length direction of the fixing tubes (31) is consistent with the radial direction of the piston mechanism one (30).

6. The guide pin quick positioning structure for a motor end cover as described in claim 5, characterized in that: The fixed tube (31) is horizontally rotatably connected to a horizontal piston mechanism (32) at one end away from the piston mechanism (30). The piston mechanism (32) faces the same direction as the piston mechanism (30). The telescopic end of the piston mechanism (32) is horizontally rotatably connected to a vertically arranged limiting plate (33) with the same structure. The limiting plate (33) and the limiting plate (33) at the end of the piston mechanism (30) are located in the same vertical plane.

7. The guide pin quick positioning structure for a motor end cover as described in claim 6, characterized in that: Rotating grooves are provided on the side walls of the multiple limiting plates (33) that are close to each other along the vertical direction. The two adjacent limiting plates (33) are rotatably connected in the rotating grooves at the same horizontal height to the same horizontal connector (34). The ends of the two adjacent limiting plates (33) that are close to each other are rounded. The two ends of the connector (34) along its length direction are also rounded.

8. The quick-positioning structure for the guide pin of a motor end cover as described in claim 1, characterized in that: The installation device (10) has a fixing mechanism at the center of its bottom wall, and the buffer block (12) is made of flexible material.

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