CN210451721U - Tightening mechanism for double-start threaded member - Google Patents
Tightening mechanism for double-start threaded member Download PDFInfo
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- CN210451721U CN210451721U CN201920840845.XU CN201920840845U CN210451721U CN 210451721 U CN210451721 U CN 210451721U CN 201920840845 U CN201920840845 U CN 201920840845U CN 210451721 U CN210451721 U CN 210451721U
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Abstract
The utility model discloses a tightening mechanism for a double-thread member, which comprises a body and a driving part, wherein the body is provided with an accommodating cavity, a limiting part is arranged in the accommodating cavity, and the driving part is screwed into the accommodating cavity in a first screwing direction during tightening action, so that the driving part is fixedly connected with the body in sequence; enabling the limiting part to be abutted against the double-head threaded part; threading a second end of the double-start threaded member into a mounting member; during the retraction action, the driving part rotates in a second rotation direction, and the driving part and the limiting part are sequentially separated; disengaging the body from the double start threaded member. The utility model discloses at least, include following advantage: utilize the spacing to the double thread spare in the tightening process for tightening force is greater than the frictional force of double thread spare and product butt joint, accomplishes the action of tightening, utilizes and breaks away from with the double thread spare, makes the power of falling back be less than the frictional force of double thread spare and product butt joint, accomplishes the action of falling back.
Description
Technical Field
The utility model relates to an installation accessory technical field of mechanism, specific is an tightening mechanism for double thread spare.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The double-thread part is used as a connecting fitting and can fix two relatively independent elements at two ends of the double-thread part respectively, so that the two relatively independent elements are relatively fixed and applied to various aspects in industrial equipment. Taking a double-threaded member as an example, the tightening method generally adopts a double-nut tightening method, and a manual tool is required, which is time-consuming and labor-consuming. And the existing double-end screw tightening tool generally has a relatively complex structure, so that the manufacturing cost is high, and the use stability is poor.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect among the prior art, the embodiment of the utility model provides an tighten mechanism for double-end thread spare, it utilizes in the process of tightening spacing to the double-end thread spare for tighten the power and be greater than the frictional force of double-end thread spare and product butt joint, accomplish and tighten the action, utilize and the double-end thread spare break away from, make the power of returning back be less than the frictional force of double-end thread spare and product butt joint, accomplish and roll back the action.
The embodiment of the application discloses: the tightening mechanism for the double-threaded part comprises a body and a driving part, wherein the body and the driving part are provided with a first end part and a second end part which are arranged oppositely, the body is provided with a containing cavity which is communicated with the first end part and the second end part, a limiting part is arranged in the containing cavity, the inner side wall of the body is provided with a first thread and a second thread which are respectively matched with the driving part and the double-threaded part and are respectively positioned on two sides of the limiting part, the tightening mechanism has tightening action and retreating action, when the tightening action is carried out, the driving part is used for screwing the first end part of the body into the containing cavity in a first screwing direction through the first thread so as to enable the driving part to be fixedly connected with the body after being abutted against the limiting part, the driving part is used for screwing the second thread into the double-threaded part to the limiting part and the double-threaded part after being fixedly connected with the body through the driving part and the first thread, and the second end part of the body is The driving part is used for rotating in a first rotating direction after the limiting part is abutted with the double-head threaded part, so that the second end of the double-head threaded part is screwed into the mounting component;
when the device moves backwards, the driving part can rotate relative to the body in a second rotation direction through the first thread until the driving part is separated from the limiting part; the driving part can be fixedly connected with the body through a locking part after being separated from the limiting part; the driving part can rotate in a second rotation direction through the second threads after the driving part is fixedly connected with the body until the body is separated from the double-start threaded part, wherein the second rotation direction is opposite to the first rotation direction.
Further, the driving part comprises a ball screw and a ball screw nut which is arranged on the ball screw in a threaded mode and is fixedly arranged with the body.
Further, the ball screw nut is accommodated in the accommodating groove, and the axis of the ball screw nut is parallel to the extending direction of the accommodating groove.
Further, the locking part comprises a locking screw and a threaded hole arranged on the body, and the locking screw penetrates through the ball screw to be matched and locked with the threaded hole.
Furthermore, a disc is sleeved on the ball screw, and a plurality of through holes which correspond to the threaded holes in the body and are used for the screws to penetrate are formed in the disc.
Further, spacing portion is including filling the ball that holds the intracavity, the ball respectively with drive division and double-end screw spare point contact.
Further, the cavity is provided with a first cavity and a second cavity along a direction of a connecting line of the first end and the second end of the body, and the cross-sectional area of the first cavity is larger than that of the second cavity.
Further, the maximum cross-sectional area of the sphere is smaller than the cross-sectional area of the first cavity and larger than the cross-sectional area of the second cavity.
The embodiment of the application discloses: a make-up method for a double-start threaded member, comprising the steps of:
screwing the double-start threaded member from the first end portion into the mounting member;
the driving part is screwed into the accommodating cavity from the first end part of the body in a first screwing direction through first threads, so that the driving part is fixedly connected with the body after being abutted against the limiting part;
the driving part is used for rotating in a first rotating direction through the first threads after the driving part is fixedly connected with the body, so that the second end part of the body is screwed into the double-thread part through the second threads until the limiting part is abutted against the double-thread part;
the driving part is used for rotating in a first rotating direction after the limiting part is abutted to the double-head threaded part, so that the second end of the double-head threaded part is screwed into the mounting part.
The embodiment of the application discloses: a method of backing off for a double start threaded member, comprising the steps of:
the driving part can rotate relative to the body in a second rotation direction through the first threads until the driving part is separated from the limiting part;
the driving part can be fixedly connected with the body through a locking part after the driving part is separated from the limiting part;
the driving part can rotate in a second rotation direction through the second thread after the driving part is fixedly connected with the body until the body is separated from the double-thread part.
Borrow by above technical scheme, the beneficial effects of the utility model are as follows:
1. according to the double-thread tightening device, the driving portion and the limiting portion are arranged, in the tightening action process, the driving portion rotates in the first rotating direction, the driving portion is enabled to abut against the limiting portion in sequence, the limiting portion is enabled to abut against the second end portion of the double-thread piece, the generated abutting force is guaranteed to be larger than the friction force of screwing between the double-thread piece and the mounting component, and therefore the double-thread piece is tightened;
2. according to the application, the driving part and the limiting part are arranged, and in the process of returning, the driving part rotates in the second rotating direction, so that the driving part is separated from the limiting part in sequence; after the driving part is locked by the locking part, the body is separated from the double-head screw piece, and the retraction action is completed.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an overall exploded view in an embodiment of the present invention;
fig. 2 is a cross-sectional view of the overall device structure in an embodiment of the present invention.
Reference numerals of the above figures: 1. a body; 2. a cavity; 3. a limiting part; 4. a ball screw; 5. a ball screw nut; 6. locking the screw; 7. a disc; 8. a through hole; 101. a first end portion; 102. a second end portion; 103. a first thread; 104. a second thread; 201. a first cavity; 202. a second cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is shown between the two, and no indication or suggestion of relative importance is understood. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 and 2 in combination, the present embodiment discloses a tightening mechanism for a double-start threaded member, comprising a body 1 having a first end 101 and a second end 102 arranged opposite to each other and a driving part. The body 1 is provided with a cavity 2 which runs through the first end part 101 and the second end part 102, the cavity 2 is internally provided with a limit part 3, the inner side wall of the body 1 is provided with a first thread 103 and a second thread 104 which are respectively matched with the driving part and the double-thread member and are respectively positioned at two sides of the limit part 3, the tightening mechanism has tightening action and retraction action, when in tightening action, the driving part is used for screwing the first end part 101 of the body 1 into the cavity 2 through the first thread 103 in a first screwing direction so as to ensure that the driving part is fixedly connected with the body 1 after being abutted with the limit part 3, the driving part is used for screwing the second end part 102 of the body 1 into the double-thread member through the second thread 104 until the limit part 3 is abutted with the double-thread member, the driving part is used for rotating in a first rotating direction after the limiting part 3 is abutted to the double-head threaded part, so that the second end of the double-head threaded part is screwed into the mounting component;
during the retraction action, the driving part can rotate relative to the body 1 in a second rotation direction through the first thread 103 until the driving part is separated from the limiting part 3; the driving part can be fixedly connected with the body 1 through a locking part after being separated from the limiting part 3; the driving part can rotate in a second rotation direction through the second thread 104 after the driving part is fixedly connected with the body 1 until the body 1 is separated from the double-start thread member, wherein the second rotation direction is opposite to the first rotation direction.
In the above embodiment, during the tightening action, the driving portion rotates in the first rotation direction, so that the driving portion sequentially abuts against the limiting portion 3, the limiting portion 3 abuts against the second end 102 of the double-threaded member, and the generated abutting force is ensured to be greater than the screwing friction force between the double-threaded member and the mounting component, thereby achieving the tightening action of the double-threaded member; in the process of backing, the driving part rotates in a second rotation direction, so that the driving part is separated from the limiting part 3 in sequence; after the driving part is locked by the locking part, the body 1 is separated from the double-start screw member, and the retraction action is completed.
In this embodiment, the tightening mechanism is disposed in a vertical direction, the driving portion is located at the upper end of the body 1, and the double-threaded member is located at the lower end of the body 1. Preferably, the double-ended threaded member in the present mode can be a double-ended stud. Specifically, the body 1 has a multi-stage shaft shape, and the sectional area of the shaft end is gradually reduced along the axial direction from the first end 101 to the second end 102. The above arrangement is suitable for mounting the driving portion and the locking portion in the following by changing the thickness, and can save materials.
In this embodiment, the cavity 2 is a circular hole shape and extends in the up-down direction; preferably, the cavity 2 is arranged coaxially with the body 1. The first thread 103 is located at the cavity 2 adjacent to the first end 101 of the body 1, and the second thread 104 is located at the cavity 2 adjacent to the second end 102 of the body 1. The first thread 103 is adapted to the drive portion and the second thread 104 is adapted to a stud.
In the present embodiment, the driving unit includes a ball screw 4 and a ball screw nut 5 screwed to the ball screw 4 and fixed to the main body 1. Specifically, the ball screw 4 and the ball screw nut 5 are respectively arranged coaxially with the body 1, and the outer side wall of the ball screw nut 5 is embedded in the accommodating cavity 2. The upper end of the ball screw nut 5 extends outwards to form a protrusion for abutting against the end of the body 1, so that the ball screw nut 5 is fixed on the body 1 through a locking screw 6, and the thread of the ball screw nut 5 for matching with the ball screw 4 is the first thread 103. In the above embodiment, the ball screw nut 5 is preferably connected to the cavity 2 of the body 1 in a clearance fit manner. One end of the ball screw 4 is screwed into the ball screw nut 5, and the end part accommodated in the accommodating cavity 2 can move in the vertical direction, so that the ball screw can be abutted against or separated from the limiting part 3. In the present embodiment, the ball screw 4 and the stopper portion 3 are preferably connected by point contact.
In this embodiment, the limiting portion 3 includes a spherical ball filled in the accommodating cavity 2, and the spherical ball is in point contact with the driving portion and the double-thread piece respectively. The cavity 2 has a first cavity 201 and a second cavity 202 along a direction connecting the first end 101 and the second end 102 of the body 1, and a cross-sectional area of the first cavity 201 is larger than a cross-sectional area of the second cavity 202. Specifically, a step surface perpendicular to the axis of the body 1 is arranged at the transition between the first cavity 201 and the second cavity 202, and the spherical surface of the spherical ball can abut against the edge of the step surface under the action of gravity of the spherical ball. In this way, the ball may be made of a stainless steel material, and may be in a hollow representation manner or a solid representation manner, which is not limited or described in this embodiment.
In this embodiment, the locking portion includes a locking screw 6 and a threaded hole provided on the body 1, and the locking screw 6 passes through the ball screw 4 and is locked in cooperation with the threaded hole. The ball screw 4 is sleeved with a disc 7, and the disc 7 is provided with a plurality of through holes 8 which correspond to the threaded holes in the body 1 and are used for the screws to penetrate through. Specifically, a locking block protruding upward is disposed on a surface of the first end 101 of the body 1, and the threaded hole is disposed on the locking block and extends in the vertical direction. The through holes 8 are distributed on the disc 7 in a circular array, and eighteen through holes 8 are arranged. The disc 7 and the ball screw 4 rotate synchronously, preferably, the disc 7 and the ball screw 4 are integrally arranged, and of course, in other modes, the disc can be detachably arranged. The locking process is specifically as follows: when the ball screw 4 rotates to a preset position, a bolt is manually matched with the thread on the locking block after penetrating through the through hole 8, and then the disc 7 is locked on the body 1, so that the ball screw 4 is fixed relative to the body 1.
The working principle of the utility model comprises the following steps:
manually screwing the double-start threaded member from the first end portion 101 into the mounting member; specifically, the double-thread member is screwed into the mounting member in the up-down direction;
the driving part is screwed into the accommodating cavity 2 from the first end part 101 of the body 1 through a first thread 103 in a first screwing direction, so that the driving part is fixedly connected with the body 1 after being abutted against the limiting part 3; specifically, the second end of the ball screw 4, which is located outside the body 1, is driven by a pistol drill to rotate, and the first end of the ball screw 4 is made to move downwards until the end face of the first end of the ball screw 4 abuts against the round ball, and exerts abutting force on the round ball;
the driving part is used for rotating in a first rotating direction through the first threads 103 after the driving part is fixedly connected with the body 1, so that the second end part 102 of the body 1 is screwed into the double-start threaded piece through the second threads 104 until the limiting part 3 abuts against the double-start threaded piece; specifically, under the driving of a pistol drill, the ball screw 4 and the body 1 rotate synchronously and move downwards, so that the second thread 104 located at the second end 102 of the body 1 is screwed into the second end 102 of the stud until the single surface of the second end 102 of the stud abuts against the lower part of the round ball, and in this step, the friction force between the first end of the stud and the mounting part is greater than the friction force between the first thread 103 of the body 1 and the second end of the stud.
The driving part is used for rotating in a first rotating direction after the limiting part 3 is abutted to the double-head threaded part, so that the second end of the double-head threaded part is screwed into the mounting component. Specifically, under the driving of a pistol drill, the ball screw 4, the body 1 and the stud bolt synchronously rotate until the stud bolt is screwed in place relative to the mounting part to complete the tightening action of the stud bolt, and in the step, the abutting force exerted by the ball on the stud bolt is greater than the friction force between the first end of the stud bolt and the mounting part;
the driving part can rotate relative to the body 1 in a second rotation direction through the first thread 103 until the driving part is separated from the limiting part 3; specifically, the pistol drill drives the ball screw 4 to move upwards relative to the body 1, in the process, the lower end portion of the ball screw is separated from the round ball, the abutting force between the ball and the round ball disappears, and the abutting force between the round ball and the stud disappears correspondingly, in the above steps, the friction force between the first end portion 101 of the stud and the mounting part is greater than the friction force between the second end portion 102 of the stud and the second nut on the body 1, and the friction force between the second end portion 102 of the stud and the second nut on the body 1 is greater than the friction force between the ball screw 4 and the ball screw nut 5;
the driving part can be fixedly connected with the body 1 through a locking part after the driving part is separated from the limiting part 3; specifically, when the drill bit rotates to a preset position, the ball screw 4 and the body 1 are locked through the locking part, so that the ball screw 4 and the body 1 are ensured to generate torsion in the subsequent rotation process of the gun drill, and synchronous movement can be realized;
the driving part can rotate in the second rotation direction through the second thread 104 after the driving part is fixedly connected with the body 1 until the body 1 is separated from the double-thread member. Specifically, the pistol drill drives the ball screw 4 and the body 1 to synchronously move upwards relative to the stud bolt until the second end portion 102 of the body 1 is separated from the stud bolt, and the retraction action is completed; in the above step, the torque force between the body 1 and the ball screw 4 is respectively greater than the friction force between the second end of the stud and the body 1 and the friction force between the first end of the stud and the mounting part, and the friction force between the second end of the stud and the body 1 is smaller than the friction force between the first end of the stud and the mounting part.
The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. The tightening mechanism for the double-threaded part is characterized by comprising a body and a driving part, wherein the body is provided with a first end part and a second end part which are oppositely arranged, the body is provided with a containing cavity which penetrates through the first end part and the second end part, a limiting part is arranged in the containing cavity, the inner side wall of the body is provided with a first thread and a second thread which are respectively matched with the driving part and the double-threaded part and are respectively positioned on two sides of the limiting part, the tightening mechanism has tightening action and retraction action, when in tightening action, the driving part is used for screwing the first end part of the body into the containing cavity through the first thread in a first screwing direction so as to enable the driving part to be fixedly connected with the body after being abutted against the limiting part, and the driving part is used for rotating in the first screwing direction through the first thread after being fixedly connected with the body, the second end of the body is screwed into the double-threaded part through the second threads until the limiting part abuts against the double-threaded part, and the driving part is used for rotating in a first rotating direction after the limiting part abuts against the double-threaded part, so that the second end of the double-threaded part is screwed into the mounting part;
when the device moves backwards, the driving part can rotate relative to the body in a second rotation direction through the first thread until the driving part is separated from the limiting part; the driving part can be fixedly connected with the body through a locking part after being separated from the limiting part; the driving part can rotate in a second rotation direction through the second threads after the driving part is fixedly connected with the body until the body is separated from the double-start threaded part, wherein the second rotation direction is opposite to the first rotation direction.
2. Tightening mechanism for double-start threaded members according to claim 1, characterized in that said driving portion comprises a ball screw, a ball screw nut threaded on said ball screw and fixedly arranged with said body.
3. Tightening mechanism for double-start threaded members according to claim 2, characterized in that said ball screw nut is housed in said housing chamber with its axis arranged parallel to the direction of extension of the housing chamber.
4. The tightening mechanism for a double-start threaded member as set forth in claim 2, wherein said locking portion includes a locking screw, a threaded hole provided on said body, said locking screw being lockingly fitted with said threaded hole through said ball screw.
5. The tightening mechanism for a double-start threaded member as claimed in claim 4, wherein a disc is sleeved on the ball screw, and a plurality of through holes corresponding to the threaded holes on the body respectively and for the screws to pass through are formed in the disc.
6. The tightening mechanism for a double-start threaded member according to claim 1, wherein the stopper portion includes a spherical ball filled in the cavity, the spherical ball being in point contact with the driving portion and the double-start threaded member, respectively.
7. Tightening mechanism for a double-start threaded element according to claim 6, characterized in that said housing has a first cavity and a second cavity in the direction of the line connecting the first end and the second end of said body, the cross-sectional area of said first cavity being greater than the cross-sectional area of said second cavity.
8. The tightening mechanism for a double-start threaded member of claim 7, wherein the maximum cross-sectional area of the spherical ball is smaller than the cross-sectional area of the first cavity and larger than the cross-sectional area of the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920840845.XU CN210451721U (en) | 2019-06-05 | 2019-06-05 | Tightening mechanism for double-start threaded member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920840845.XU CN210451721U (en) | 2019-06-05 | 2019-06-05 | Tightening mechanism for double-start threaded member |
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| Publication Number | Publication Date |
|---|---|
| CN210451721U true CN210451721U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920840845.XU Active CN210451721U (en) | 2019-06-05 | 2019-06-05 | Tightening mechanism for double-start threaded member |
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| CN (1) | CN210451721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125670A (en) * | 2019-06-05 | 2019-08-16 | 苏州逸美德科技有限公司 | Cocking mechanism and make-up and backing method for double thread part |
-
2019
- 2019-06-05 CN CN201920840845.XU patent/CN210451721U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125670A (en) * | 2019-06-05 | 2019-08-16 | 苏州逸美德科技有限公司 | Cocking mechanism and make-up and backing method for double thread part |
| CN110125670B (en) * | 2019-06-05 | 2024-04-30 | 逸美德科技股份有限公司 | Tightening mechanism for double-ended screw and tightening and retracting method |
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