CN220297002U

CN220297002U - Drawing device

Info

Publication number: CN220297002U
Application number: CN202322296888.5U
Authority: CN
Inventors: 刘军锋; 邓春志; 李毅斌; 舒静; 张艳; 张亚龙; 战仁奎; 关红艳; 李晗珏; 何宗格
Original assignee: Wolong Electric Shanghai Central Research Institute Co ltd; Zhejiang Longchuang Motor Technology Innovation Co ltd; Wolong Electric Group Co Ltd
Current assignee: Wolong Electric Shanghai Central Research Institute Co ltd; Zhejiang Longchuang Motor Technology Innovation Co ltd; Wolong Electric Drive Group Co Ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-01-05
Anticipated expiration: 2033-08-24

Abstract

The utility model provides a drawing device. Comprising the following steps: a rotation shaft; the first end of the screw is connected with the rotating shaft, the screw is used for installing a workpiece, the second end of the screw extends out of the workpiece, the first end of the workpiece is attached to the end face of the rotating shaft, and the screw is provided with an initial position and an assembly position after being pulled out; the first locking piece is detachably arranged on the second end of the screw rod; when the drawing assembly is operated to release the screw rod, the screw rod is retracted to the initial position from the assembly position, and the screw rod drives the first locking piece to synchronously move in the process of retracting to the initial position from the assembly position. According to the scheme, the elastic force of the screw rod is utilized to drive the first locking piece to lock the workpiece, so that the stability and reliability of workpiece installation are improved.

Description

Drawing device

Technical Field

The utility model relates to the technical field of workpiece installation, in particular to a drawing device.

Background

In the prior art, the common threaded connection is that elastic force is generated by an elastic pad or a nut end surface locking device, so that the workpiece is fixed by friction force generated by extrusion of internal and external threads. However, the surface of the workpiece is damaged when the connecting assembly and the disassembly are relatively rotated, the reliability of the threaded connection is greatly reduced when the workpiece is assembled again, and the safety of the rotating part (such as a motor rotating shaft) outputting larger torque is very low.

In view of the above technical problems, no effective solution has been proposed at present.

Disclosure of Invention

The utility model mainly aims to provide a drawing device to solve the problem that workpieces in the prior art are unreliable in connection.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a drawing apparatus comprising: a rotation shaft; the first end of the screw is connected with the rotating shaft, the screw is used for installing a workpiece, the second end of the screw extends out of the workpiece, the first end of the workpiece is attached to the end face of the rotating shaft, and the screw is provided with an initial position and an assembly position after being pulled out; the first locking piece is detachably arranged on the second end of the screw rod; the drawing assembly is detachably connected with the second end of the screw rod, when the drawing assembly is connected with the second end of the screw rod, the drawing assembly is operated to draw the screw rod along the axial direction of the screw rod, the screw rod can be enabled to extend to the assembling position from the initial position, when the screw rod is released by the operation of the drawing assembly, the screw rod is retracted to the initial position from the assembling position, and the screw rod drives the first locking piece to synchronously move in the process of being retracted to the initial position from the assembling position.

Further, the drawing assembly includes: the driving assembly is detachably connected with the screw and is used for axially elongating the screw; the top sleeve is sleeved at the second end of the screw rod, a first locking piece is arranged between the top sleeve and the screw rod, a radial through waist-shaped hole is formed in the side wall of the top sleeve, and the first locking piece can be rotated through the waist-shaped hole; the first end of the top sleeve is abutted with the second end of the workpiece, and the second end of the top sleeve is abutted with the driving assembly.

Further, the inner wall surface of the top cover and the outer wall surface of the first locking member are provided with a gap therebetween so that the top cover can be separated from the first locking member in the axial direction.

Further, the drive assembly includes: the anchor rod drawing instrument is internally provided with an assembly hole and is abutted with the second end of the top sleeve; the pulling rod penetrates through the assembly hole and is connected with the anchor rod drawing instrument, the first end of the pulling rod is detachably connected with the second end of the screw rod, and the second end of the pulling rod extends out of the anchor rod drawing instrument; the second locking piece is sleeved at the second end of the pulling rod and is abutted with the anchor rod drawing instrument so as to fix the anchor rod drawing instrument and the pulling rod.

Further, the second locking piece is a second nut, the outer peripheral surface of the second end of the pulling rod is provided with external threads, the second nut is connected with the pulling rod through the external threads of the second end of the pulling rod, and the second nut is abutted with the anchor rod pulling instrument.

Further, the first end of the drawing rod is connected with the second end of the screw rod through threads.

Further, an external thread is arranged on the outer peripheral surface of the second end of the screw rod, a matching groove is arranged at the first end of the pulling rod, an internal thread is arranged on the groove wall of the matching groove, and the screw rod is connected with the pulling rod through the internal thread and the external thread.

Further, the second end of the screw rod is further provided with a protruding structure protruding out of the end face, and the diameter of the protruding structure is smaller than that of the screw rod.

By applying the technical scheme of the utility model, the screw rod is stretched by drawing the screw rod, and the elastic force generated in the process of retracting the screw rod from the assembly position to the initial position is used for driving the first locking piece to lock the workpiece, so that the workpiece is fixed. Compared with the mode that in the prior art, elastic force is generated through the elastic pad or the nut end face locking device so that the workpiece is fixed by friction force generated by extrusion of internal and external threads, the damage to the surface of the workpiece can be reduced by the scheme in the embodiment, and the stability and reliability of workpiece installation are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a drawing device according to the present utility model;

FIG. 2 shows a schematic structural view of an embodiment of a top cover according to the present utility model;

fig. 3 shows a schematic structural view of an embodiment of a pull rod according to the utility model.

Wherein the above figures include the following reference numerals:

1. a rotation shaft; 2. a workpiece; 3. a screw; 4. a first locking member; 5. a top cover; 50. a waist-shaped hole; 6. an anchor rod drawing instrument; 7. a second locking member; 8. pulling the rod.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

As shown in connection with fig. 1 to 3, according to a specific embodiment of the present application, a drawing device is provided.

The drawing device comprises a rotating shaft 1, a screw rod 3, a first locking piece 4 and a drawing assembly, wherein the first end of the screw rod 3 is connected with the rotating shaft 1, the screw rod 3 is used for installing a workpiece 2, the second end of the screw rod 3 extends out of the workpiece 2, the first end of the workpiece 2 is attached to the end face of the rotating shaft 1, and the screw rod 3 is provided with an initial position and an assembly position after being drawn; the first locking member 4 is detachably mounted on the second end of the screw 3; when the drawing assembly is detachably connected with the second end of the screw rod 3, and when the drawing assembly is connected with the second end of the screw rod 3, the screw rod 3 is drawn along the axial direction of the screw rod 3 by operating the drawing assembly, the screw rod 3 can be extended from an initial position to an assembling position, and when the screw rod 3 is released by operating the drawing assembly, the screw rod 3 is retracted from the assembling position to the initial position, wherein the screw rod 3 drives the first locking piece 4 to synchronously move in the process of retracting the screw rod 3 from the assembling position to the initial position.

By applying the technical scheme of the embodiment, the screw 3 is stretched by pulling the screw 3, and the first locking piece 4 is driven to lock the workpiece 2 by utilizing the elastic force generated in the process that the screw 3 is retracted from the assembly position to the initial position, so that the workpiece 2 is fixed. Compared with the mode that in the prior art, elastic force is generated through the elastic pad or the nut end face locking device so that the workpiece is fixed by friction force generated by extrusion of internal and external threads, the damage to the surface of the workpiece can be reduced by the scheme in the embodiment, and the stability and reliability of workpiece installation are improved.

Further, the drawing assembly comprises a driving assembly and a top sleeve 5, the driving assembly is detachably connected with the screw 3, and the driving assembly is used for axially elongating the screw 3; the top sleeve 5 is sleeved at the second end of the screw rod 3, a first locking piece 4 is arranged between the top sleeve 5 and the screw rod 3, a waist-shaped hole 50 which is radially penetrated is formed in the side wall of the top sleeve 5, and the first locking piece 4 can be rotated through the waist-shaped hole 50; the first end of the top sleeve 5 is abutted with the second end of the workpiece 2, and the second end of the top sleeve 5 is abutted with the driving assembly. In this embodiment, the waist-shaped hole 50 formed on the top cover 5 can facilitate the adjustment of the first locking member 4 by the worker, so that the first locking member 4 is connected and locked with the screw 3 at a designated position.

Wherein the inner wall surface of the top cover 5 and the outer wall surface of the first locking member 4 are arranged with a gap therebetween so that the top cover 5 can be separated from the first locking member 4 in the axial direction. That is, after the first locking member 4 moves to a position abutting against the workpiece 2 following the screw 3, the top cover 5 can be detached in the axial direction.

Specifically, the driving assembly comprises an anchor rod drawing instrument 6, a drawing rod 8 and a second locking piece 7, an assembly hole is formed in the anchor rod drawing instrument 6, and the anchor rod drawing instrument 6 is abutted with the second end of the top sleeve 5; the pulling rod 8 passes through the assembly hole and is connected with the anchor rod puller 6, the first end of the pulling rod 8 is detachably connected with the second end of the screw rod 3, and the second end of the pulling rod 8 extends out of the anchor rod puller 6; the second locking piece 7 is sleeved at the second end of the pulling rod 8, and the second locking piece 7 is abutted with the anchor rod drawing instrument 6 so as to fix the anchor rod drawing instrument 6 and the pulling rod 8. Through setting up stock and draw appearance 6, pull rod 8 and second retaining member 7, operation stock is drawn appearance 6 and can be driven pull rod 8 axial motion, and then drive the extension of screw rod 3, and second retaining member 7 can realize that stock is drawn appearance 6 and pull rod 8's connection is fixed, avoids taking place to rock the condition such as drop in the drawing process.

In this embodiment, the outer peripheral surface of the pulling rod 8 is further provided with a first mating portion, and the wall surface of the assembling hole of the anchor rod drawing instrument 6 is provided with a second mating portion, so that the installation connection of the pulling rod 8 and the anchor rod drawing instrument 6 is more stable. Optionally, the first mating portion is a mounting groove, and the second mating portion is a mounting bump.

Preferably, the second locking member 7 is a second nut, an external thread is provided on the outer circumferential surface of the second end of the pulling rod 8, the second nut is connected with the pulling rod 8 through the external thread of the second end of the pulling rod 8, and the second nut is abutted with the anchor rod puller 6. The nut is in threaded connection with the pulling rod 8, so that the installation process of the second locking piece 7 is more convenient.

Preferably, the first end of the drawing rod 8 is screwed with the second end of the screw 3. The connection and disassembly processes of the drawing rod 8 and the screw 3 can be more convenient by the threaded connection mode.

Further, an external thread is arranged on the outer peripheral surface of the second end of the screw rod 3, a matching groove is arranged at the first end of the pulling rod 8, an internal thread is arranged on the groove wall of the matching groove, and the screw rod 3 is connected with the pulling rod 8 through the internal thread and the external thread. The setting of cooperation recess can make at least partial screw rod 3 extend to the cooperation recess through threaded connection in, sets up the cooperation recess on the pull rod 8 and makes pull rod 8 drive screw rod 3 more laborsaving when carrying out axial stretching, and pull rod 8 is difficult for breaking away from screw rod 3 in the drawing process.

It should be noted that, to ensure the connection stability between the screw 3 and the pulling rod 8 during the pulling process, an additional connecting fastener may be further provided to lock the connection position between the screw 3 and the pulling rod 8, such as a locking clip.

Preferably, the second end of the screw 3 is further provided with a protruding structure protruding from the end surface, the diameter of the protruding structure being smaller than the diameter of the screw 3. By arranging the protruding structure, the protruding structure has guiding and positioning functions when the screw 3 is connected with the pulling rod 8.

By adopting the drawing device in the embodiment, the screw rod 3 with external threads is lengthened in the elastic modulus range, the first locking piece 4 with internal threads and the workpiece 2 are tightened, and finally the workpiece 2 is fixed by the friction force generated by extrusion of the internal threads and the external threads through the shrinkage force of the screw rod 3.

According to another specific embodiment of the present application, there is also provided a preferred embodiment of the drawing device.

Specifically, the workpiece 2 is mounted on the end face of the rotary shaft 1 by a screw 3, and a first lock 4 is mounted on the screw 3 for fixing the workpiece 2. The two end surfaces of the top sleeve 5 are respectively propped against the end surfaces of the workpiece 2 and the anchor rod drawing instrument 6. A gap is reserved between the first locking piece 4 and the top sleeve 5. The pulling rod 8 passes through the anchor rod drawing instrument 6, one end internal thread of the pulling rod 8 is connected with the external thread of the screw rod 3, the other end is connected with the second locking piece 7, and the second locking piece 7 is tightly attached to the anchor rod drawing instrument 6. The first locking member 4 is a nut and the second locking member 7 is a nut.

Wherein, the middle part both sides of the top cover 5 are opened with waist type holes 50, and the first locking piece 4 can be rotated at the waist type holes 50.

The first end of the pulling rod 8 is provided with an internal thread and is used for being matched and connected with the external thread of the screw rod 3; the second end of the pulling rod 8 is an external thread and is used for being connected with a second locking piece 7 so as to fix the anchor rod pulling instrument 6.

When the device is used, the anchor rod drawing instrument 6 stretches to stretch the screw rod 3 in an elastic range, and then the first locking piece 4 rotates to enable one end face of the first locking piece to be tightly attached to the end face of the workpiece 2. And shortening the anchor rod drawing instrument 6, and finally removing the second locking piece 7, the drawing rod 8, the anchor rod drawing instrument 6 and the top sleeve 5. Finally, the screw rod 3 contracts in the elastic range, the end face of the first locking piece 4 is tightly propped against the end face of the workpiece 2, and the workpiece 2 is fixed by friction force generated by extrusion of the internal thread of the first locking piece 4 and the external thread of the screw rod 3.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general terms in the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the utility model.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A drawing apparatus, characterized by comprising:

a rotating shaft (1);

the first end of the screw rod (3) is connected with the rotating shaft (1), the screw rod (3) is used for installing a workpiece (2), the second end of the screw rod (3) extends out of the workpiece (2), the first end of the workpiece (2) is attached to the end face of the rotating shaft (1), and the screw rod (3) is provided with an initial position and an assembly position after being pulled out;

a first locking member (4), the first locking member (4) being detachably mounted on the second end of the screw (3);

the drawing assembly is detachably connected with the second end of the screw rod (3), when the drawing assembly is connected with the second end of the screw rod (3), the screw rod (3) is operated to draw the screw rod (3) along the axial direction of the screw rod (3), the screw rod (3) can be enabled to stretch from the initial position to the assembly position, when the screw rod (3) is released by the drawing assembly, the screw rod (3) is retracted from the assembly position to the initial position, wherein the screw rod (3) is retracted from the assembly position to the initial position, and the screw rod (3) drives the first locking piece (4) to move synchronously.

2. The drawing apparatus of claim 1 wherein the drawing assembly comprises:

the driving assembly is detachably connected with the screw rod (3) and is used for axially elongating the screw rod (3);

the top sleeve (5) is sleeved at the second end of the screw rod (3), the first locking piece (4) is arranged between the top sleeve (5) and the screw rod (3), a radial through waist-shaped hole (50) is formed in the side wall of the top sleeve (5), and the first locking piece (4) can be rotated through the waist-shaped hole (50);

the first end of the top sleeve (5) is abutted with the second end of the workpiece (2), and the second end of the top sleeve (5) is abutted with the driving assembly.

3. Drawing device according to claim 2, characterized in that the inner wall surface of the top sleeve (5) is arranged with a gap between the inner wall surface and the outer wall surface of the first locking member (4) such that the top sleeve (5) can be disengaged from the first locking member (4) in the axial direction.

4. Drawing device according to claim 2, characterized in that the drive assembly comprises:

the anchor rod drawing instrument (6) is provided with an assembly hole inside the anchor rod drawing instrument (6), and the anchor rod drawing instrument (6) is abutted with the second end of the top sleeve (5);

the pulling rod (8) penetrates through the assembly hole to be connected with the anchor rod pulling instrument (6), the first end of the pulling rod (8) is detachably connected with the second end of the screw rod (3), and the second end of the pulling rod (8) extends out of the anchor rod pulling instrument (6);

the second locking piece (7), second locking piece (7) cover is located the second end of drawing pole (8), just second locking piece (7) with stock puller (6) butt is in order to with stock puller (6) with draw pole (8) to be fixed.

5. A drawing device according to claim 4, characterized in that the second locking member (7) is a second nut, the outer circumferential surface of the second end of the drawing rod (8) is provided with an external thread, the second nut is connected with the drawing rod (8) by the external thread of the second end of the drawing rod (8), and the second nut is in abutment with the bolt puller (6).

6. Drawing device according to claim 4, characterized in that the first end of the drawing rod (8) is screwed with the second end of the screw (3).

7. Drawing device according to claim 6, characterized in that the second end of the screw (3) is provided with an external thread on the outer circumferential surface, the first end of the drawing rod (8) is provided with a mating groove, the groove wall of the mating groove is provided with an internal thread, and the screw (3) is connected with the drawing rod (8) by means of the internal thread and the external thread.

8. Drawing device according to claim 1, characterized in that the second end of the screw (3) is further provided with a protruding structure protruding from the end face, the protruding structure having a smaller diameter than the screw (3).