CN210704599U - Puller device - Google Patents
Puller device Download PDFInfo
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- CN210704599U CN210704599U CN201921525488.4U CN201921525488U CN210704599U CN 210704599 U CN210704599 U CN 210704599U CN 201921525488 U CN201921525488 U CN 201921525488U CN 210704599 U CN210704599 U CN 210704599U
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- hollow metal
- metal pipe
- screw rod
- sleeve
- puller device
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Abstract
The utility model provides a puller device, which comprises a fixed sleeve, a countersunk head bolt and a first nut; the fixing sleeve comprises a hollow metal pipe, and the front end of the hollow metal pipe is provided with a plurality of contraction grooves; the countersunk head bolt comprises a screw rod and a screw head fixedly arranged at one end of the screw rod, the diameter of the screw rod is smaller than the inner diameter of the hollow metal pipe so as to be sleeved inside the hollow metal pipe, and the other end of the screw rod is exposed out of the rear end of the hollow metal pipe; the screw head is conical and leaks out of the front end of the hollow metal pipe, the maximum diameter of the screw head is larger than the outer diameter of the hollow metal pipe, and the minimum diameter of the screw head is smaller than the inner diameter of the hollow metal pipe, so that the screw head can prop against the front end of the hollow metal pipe; the first nut is used for being screwed at the other end of the screw rod so as to drive the screw rod to move axially. The utility model is not only simple in structure, can also improve maintenance efficiency and user's use experience degree.
Description
Technical Field
The utility model relates to an automobile assembling equipment field, concretely relates to draw horse device.
Background
Currently, a wheel speed sensor is usually provided in a sleeve mounted on an external device for measuring the speed of a vehicle while traveling. The process that the fast sensor of wheel carries out the installation through the sleeve is comparatively easy, but its demolish the process is very difficult again, mainly because present car wheel fast sensor is in the wheel casing reduction gear, exists excessively to cooperate between the sleeve of the fast sensor of wheel and the reduction gear casing, can produce the corruption of certain degree after the entering contact surface between the two of flying dust, water, can cause to take place the corrosion between sleeve and the reduction gear casing promptly, makes the operational environment of the fast sensor of wheel comparatively abominable, breaks down easily. At traditional dismantlement in-process, use pliers to press from both sides and the sleeve that the external equipment was strikeed to the crowbar usually to make the combination of sleeve and external equipment become comparatively not hard up, then just can take out the fast sensor of wheel from the sleeve after demolising, but this kind demolish equipment at present and not only increased maintenance duration when demolising the sleeve, still easily strike the in-process and take place the accident, thereby lead to the workman to be injured.
SUMMERY OF THE UTILITY MODEL
The utility model provides a draw horse device, its simple structure, the production of being convenient for, the sleeve that cup joints external equipment that can not only be quick is inside in order to take out it, can also practice thrift cost of maintenance, improves user's use experience degree.
The utility model provides a puller device, which comprises a fixed sleeve, a countersunk head bolt and a first nut;
the fixing sleeve comprises a hollow metal pipe, and the front end of the hollow metal pipe is provided with a plurality of contraction grooves;
the countersunk head bolt comprises a screw rod and a screw head fixedly arranged at one end of the screw rod, the outer diameter of the screw rod is smaller than the inner diameter of the hollow metal pipe so as to be sleeved in the hollow metal pipe, and the other end of the screw rod is exposed out of the rear end of the hollow metal pipe; the screw head is conical, the screw head is also leaked out of the front end of the hollow metal pipe, the maximum outer diameter of the screw head is larger than the outer diameter of the hollow metal pipe, and the minimum outer diameter of the screw head is smaller than the inner diameter of the hollow metal pipe;
the first nut is used for being screwed at the other end of the screw rod so as to drive the screw rod to move axially.
Further, the hollow metal pipe is a hollow steel pipe or a hollow copper pipe.
Further, the hollow metal tube is provided with 4 shrinkage grooves.
Further, the diameter of the hollow metal pipe is smaller than the inner diameter of the outer sleeve so as to be sleeved in the outer sleeve.
Further, the countersunk head bolt is provided with a through hole along the axial direction.
Furthermore, a groove is axially formed in the outer surface of the countersunk head bolt.
Further, the groove is communicated with the through hole.
Furthermore, the fixing sleeve also comprises a fixing seat which is fixedly sleeved on the outer surface of the hollow metal tube.
Further, the fixing seat and the fixing sleeve form a whole through welding.
Further, the fixing sleeve further comprises a second nut, and the second nut is fixedly connected to the outer surface of the hollow metal pipe.
Further, the outer drawing sleeve is sleeved outside the fixed seat and used for pulling out the sleeve by applying pulling force on the outer drawing sleeve.
The utility model discloses a draw horse device's simple structure, the production of being convenient for and the cost is lower, can not only quick cup joint in external equipment's telescopic inside in order to take out it, can also used repeatedly. When the sleeve is detached, one end of the hollow metal pipe with the shrinkage groove can be expanded outwards under the action of the screw head, so that the hollow metal pipe is tightly combined with the inner wall of the sleeve, and the sleeve can be pulled out from external equipment under the action of external force so as to maintain components in the sleeve. Moreover, the device has good safety performance, and improves the use experience of users.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a structural diagram of a puller device provided by the present invention.
Fig. 2 is another structural diagram of a puller device provided by the present invention.
Fig. 3 is a structural diagram of a countersunk head bolt in a puller device provided by the utility model.
Fig. 4 is a structural diagram of a fixing sleeve in the puller device provided by the utility model.
Reference numerals: 1. a countersunk bolt; 2. a first nut; 3. a hollow metal tube; 31. a front end; 32. a back end; 4. a contraction groove; 5. a screw; 6. a screw head; 7. a sleeve; 8. a groove; 9. a fixed seat; 10. a second nut.
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 some, not all, of the embodiments of the present invention. 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 will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1 and fig. 2, a puller device according to an embodiment of the present invention is shown, and it can be known that the puller device in this embodiment can act on an external sleeve of an external device, which is provided with a component to be taken out, so as to fasten and take out the external sleeve. The puller device in the embodiment can comprise a fixed sleeve, a countersunk head bolt 1 and a first nut 2; the fixing sleeve comprises a hollow metal pipe 3, and a plurality of contraction grooves 4 are formed in the front end 31 of the hollow metal pipe 3; the countersunk head bolt 1 comprises a screw rod 5 and a screw head 6 fixedly arranged at one end of the screw rod 5, the outer diameter of the screw rod 5 is smaller than the inner diameter of the hollow metal tube 3 so as to be sleeved inside the hollow metal tube 3, and the other end of the screw rod 5 is exposed out of the rear end 32 of the hollow metal tube 3; the screw head 6 is conical and leaks out of the front end 31 of the hollow metal tube 3, the maximum diameter of the screw head 6 is larger than the outer diameter of the hollow metal tube 3, and the minimum diameter is smaller than the inner diameter of the hollow metal tube 3; the first nut 2 is used for being screwed on the other end of the screw rod 5 so as to drive the screw rod 5 to move axially.
In general, the hollow metal pipe 3 may be a hollow steel pipe, or may be a hollow pipe made of other metal materials such as a hollow copper pipe, which is not limited in this embodiment. Hollow metal pipe 3 can cup joint into outside sleeve 7, and a plurality of shrink groove 4 that its front end 31 set up can make it outwards expand under the effect of external force, and then closely laminate with outside telescopic inner wall, is convenient for extract outside sleeve from external equipment through the external force that acts on hollow metal pipe 3. The first nut 2, which is received by the threaded rod 5, can be rotated by a wrench or other tool to move the countersunk head bolt 1 toward the rear end 32 of the hollow metal tube 3.
Meanwhile, the hollow metal tube 3 can be elastically deformed when being affected by an external force due to the shrinkage groove 4, and can be restored to the original shape when no external force is applied. Therefore, after the outer sleeve 7 is pulled out, after the first nut 2 is screwed to rotate reversely for a certain distance, the countersunk head bolt 1 can be controlled to move towards the front end 31 of the hollow metal pipe 3 until the initial position is recovered, namely, the screw head 6 can leak out of the front end 31 of the hollow metal pipe 3, and the hollow metal pipe 3 can be recovered and separated from the outer cylinder so as to be convenient for repeated use.
Specifically, a component to be taken out, which may be a wheel speed sensor or another component, is usually disposed inside the outer sleeve 7. For example, when the wheel speed sensor in the outer sleeve 7 needs to be taken out, the front end 31 of the hollow metal tube 3 can be firstly put into the outer sleeve 7, meanwhile, the screw head 6 at the front end 31 of the hollow metal tube 3 can retract to the rear end 32 of the hollow metal tube along with the rotation of the first nut 2 when the first nut 2 abuts against the rear end 32 of the hollow metal tube 3, because the maximum outer diameter of the screw head 6 is larger than the inner diameter of the hollow metal tube 3, the screw head 6 continuously acts on the front end 31 of the hollow metal tube 3 provided with the shrinkage groove 4, so that the hollow metal tube 3 expands and deforms outwards to firmly abut against the inner wall of the outer sleeve, even if the hollow metal tube 3 can reversely hold the outer sleeve after deformation, and when the hollow metal tube 3 is pulled outwards under the action of external force, the outer sleeve can move along with the movement of the hollow metal tube 3, until the outer sleeve can be separated from the external device.
In one embodiment, the hollow metal tube 3 is provided with 4 constricting channels 4. The number of the contraction grooves 4 is set to 4 so that the hollow metal tube 3 is more tightly coupled with the outer sleeve 7. Of course, the number of the contraction grooves 4 is not limited in this embodiment, i.e. 5, 6, 7, or 8, etc. may be provided.
In a further embodiment, the outer diameter of the hollow metal tube 3 is smaller than the inner diameter of the outer sleeve 7. In order to facilitate the insertion of the hollow metal tube 3 into the outer sleeve 7, the outer diameter of the hollow metal tube 3 needs to be smaller than the inner diameter of the outer sleeve 7 by a certain size, and meanwhile, when the screw head 6 enters the front end 31 of the hollow metal tube 3 to expand the contraction groove 4, the hollow metal tube 3 can be tightly combined with the outer sleeve 7, so that the difference between the two sizes cannot be too large. Specifically, it is desirable that the difference between the outer diameter of the hollow metal tube 3 and the inner diameter of the outer sleeve 7 is 0.3 to 0.5 mm.
In one embodiment, the countersunk head bolt 1 is provided with an axial through hole. In some cases, the wheel speed sensor inside the outer sleeve 7 has a section of wire exposed inside the outer sleeve 7, so that the countersunk head bolt 1 is provided with a through hole for the wire to pass through when the hollow metal tube 3 extends into the outer sleeve 7, thereby protecting the wire from being damaged.
In a further embodiment, the outer surface of the countersunk-head bolt 1 is provided with a groove 8 in the axial direction. In some cases, the wheel speed sensor inside the outer sleeve 7 may have an irregular shape such as a protruding portion, so that a groove 8 is formed on the outer surface of the countersunk head bolt 1 to facilitate the separation of the screw head 6 of the countersunk head bolt 1 from the wheel speed sensor when the hollow metal pipe 3 is fully inserted into the outer sleeve 7, thereby preventing the wheel speed sensor from being damaged.
In a further embodiment, the recess 8 communicates with the through hole. Wherein, the groove is communicated with the through hole, so as to better protect the wheel speed sensor and the wire thereof in the outer sleeve 7.
In an embodiment, the fixing sleeve further comprises a fixing seat 9, and the fixing seat 9 is fixedly sleeved on the outer surface of the hollow metal tube 3. The shape of the fixing seat 9 is not limited herein, and since the shape of the outer sleeve 7 is changed according to different installation scenes, the fixing seat 9 can be made into a matching fixing seat 9 according to different outer sleeves 7. The fixing seat 9 is used for abutting against the external sleeve 7, so that when the first nut 2 is screwed, the screw head 6 is driven to move towards the rear end 32 of the hollow metal pipe 3 more stably, and the end, with the contraction groove 4, of the hollow metal pipe 3 is smoothly expanded.
In a further embodiment, the holder 9 is made integral with the hollow metal tube 3 by welding. Wherein, the fixing base 9 and the hollow metal tube 3 can be welded together in a sleeving manner, and the fixing base 9 and the hollow metal tube 3 can be integrally formed according to the shape of the external sleeve 7 when the hollow metal tube 3 is manufactured. Of course, the specific manner of the sleeve connection between the two is not limited herein.
In one embodiment, the fixing sleeve further comprises a second nut 10, and the second nut 10 is fixedly connected to the outer surface of the hollow metal tube 3. Wherein the second nut 10 is fixedly connected to the rear end 32 of the hollow metal tube 3. In some cases, the tight coupling of the external sleeve 7 to the external device on which it is located makes the puller device in this embodiment harder to pull the external sleeve, when the first nut 2 can be screwed and moved against the second nut 10, when the first nut 2 can move along the screw 5 towards the rear end 32 of the hollow metal tube 3 and spread the front end 31 of the hollow metal tube 3 with the constriction 4; when the front end 31 of the hollow metal tube 3 is tightly attached to the inner wall of the outer sleeve 7, the second nut 10 can be directly screwed so that the hollow metal tube 3 drives the outer sleeve to rotate relative to the external device, i.e. the joint between the hollow metal tube and the outer sleeve becomes loose, so that the hollow metal tube 3 is pulled outwards by external force to pull the outer sleeve out of the external device.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A puller device, comprising: the fixing sleeve, the countersunk head bolt and the first nut;
the fixing sleeve comprises a hollow metal pipe, and the front end of the hollow metal pipe is provided with a plurality of contraction grooves;
the countersunk head bolt comprises a screw rod and a screw head fixedly arranged at one end of the screw rod, the outer diameter of the screw rod is smaller than the inner diameter of the hollow metal pipe so as to be sleeved in the hollow metal pipe, and the other end of the screw rod is exposed out of the rear end of the hollow metal pipe; the screw head is conical, the screw head is also leaked out of the front end of the hollow metal pipe, the maximum outer diameter of the screw head is larger than the outer diameter of the hollow metal pipe, and the minimum outer diameter of the screw head is smaller than the inner diameter of the hollow metal pipe;
the first nut is used for being screwed at the other end of the screw rod so as to drive the screw rod to move axially.
2. The puller device according to claim 1, wherein the hollow metal tube is a hollow steel tube or a hollow copper tube.
3. The puller device according to claim 2, wherein the number of said constricting channels is 4.
4. The puller device according to claim 3, wherein the hollow metal tube has an outer diameter smaller than an inner diameter of the outer sleeve to be fitted around the inside of the outer sleeve.
5. The puller device according to claim 1, wherein said countersunk head bolt is provided with an axial through hole.
6. The puller device according to claim 5, wherein the outer surface of said countersunk head bolt is provided with a groove in the axial direction.
7. The puller device according to claim 6, wherein said recess is in communication with said through bore.
8. The puller device according to claim 1, wherein said retainer additionally comprises a retainer which is secured to an outer surface of said hollow metal tube.
9. The puller device according to claim 8, wherein said holder is formed integrally with said retainer sleeve by welding.
10. The puller device according to claim 1, wherein said retaining sleeve further comprises a second nut fixedly attached to an outer surface of said hollow metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525488.4U CN210704599U (en) | 2019-09-09 | 2019-09-09 | Puller device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525488.4U CN210704599U (en) | 2019-09-09 | 2019-09-09 | Puller device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210704599U true CN210704599U (en) | 2020-06-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921525488.4U Active CN210704599U (en) | 2019-09-09 | 2019-09-09 | Puller device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210704599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117283272A (en) * | 2023-11-27 | 2023-12-26 | 成都国营锦江机器厂 | Method for disassembling elastic shaft of power turbine assembly of aircraft engine |
-
2019
- 2019-09-09 CN CN201921525488.4U patent/CN210704599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117283272A (en) * | 2023-11-27 | 2023-12-26 | 成都国营锦江机器厂 | Method for disassembling elastic shaft of power turbine assembly of aircraft engine |
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