CN213112452U - Drawing device - Google Patents
Drawing device Download PDFInfo
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- CN213112452U CN213112452U CN202022087070.9U CN202022087070U CN213112452U CN 213112452 U CN213112452 U CN 213112452U CN 202022087070 U CN202022087070 U CN 202022087070U CN 213112452 U CN213112452 U CN 213112452U
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- inner sleeve
- sleeve
- pull rod
- spring
- outer sleeve
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Abstract
The utility model discloses a drawing device, which comprises a pull rod, wherein an inner sleeve and an outer sleeve are arranged inside and outside the middle part of the pull rod in a sleeved mode, the top end of the outer sleeve extends to the upper part of the inner sleeve, and a fixing frame fixed with the top end of the outer sleeve is movably sleeved outside the pull rod; the outer part of the pull rod between the fixed frame and the top end of the inner sleeve is sleeved with a first spring, the bottom end of the pull rod is fixed with an expanded conical head, the bottom end of the inner sleeve is hinged with at least two clamping jaws, and the inner walls of the clamping jaws are in sliding contact with the side walls of the conical head; the side walls of the outer sleeve and the inner sleeve are provided with correspondingly arranged lock holes, and the clamping head is movably clamped in the lock holes. The advantages are that: the structure is simple, and the use is convenient; when the clamping jaw is required to be opened, the elastic force of the first spring can be released by pressing the wrench, the inner sleeve is pushed downwards by the first spring, and the clamping jaw is rotated and opened under the support of the conical head to realize clamping connection with the well cover hole; when the jack catch needs to be retracted, the reset can be realized only by pulling the reset rod upwards.
Description
The technical field is as follows:
the utility model relates to an appurtenance, specifically speaking design a drawing device.
Background art:
in order to facilitate maintenance, a plurality of maintenance wells are arranged along a gas pipe network, a well cover is arranged at the top of each maintenance well, the well cover needs to be opened during maintenance, the traditional opening mode is that the well cover is hooked by a human power or a lever mode, if the well cover cannot be opened, the well cover is opened by adopting a sledgehammer knocking mode, however, most of wells have methane or other combustible gases, and once sparks are generated, the combustible gases are very dangerous to detonate. The applicant has developed a well lid opener comprising several parts, namely a leg, a beam, a jack and a pulling device, wherein the leg and the jack support the beam, while the pulling device needs to be able to reach into the well lid hole and to be able to be tensioned, and there is no such pull rod on the market, and therefore, there is a need to develop a pulling device.
The utility model has the following contents:
an object of the utility model is to provide a convenient to use's draw-off gear.
The utility model discloses by following technical scheme implement: a drawing device comprises a pull rod, wherein an inner sleeve and an outer sleeve are arranged inside and outside the middle of the pull rod in a sleeved mode, the top end of the outer sleeve extends to the upper portion of the inner sleeve, and a fixing frame fixed to the top end of the outer sleeve is movably sleeved outside the pull rod; a first spring is sleeved outside the pull rod between the fixed frame and the top end of the inner sleeve, an expanded conical head is fixed at the bottom end of the pull rod, at least two clamping jaws are hinged to the bottom end of the inner sleeve, and the inner walls of the clamping jaws are in sliding contact with the side walls of the conical head; the improved wrench is characterized in that the outer sleeve and the side wall of the inner sleeve are provided with correspondingly arranged lock holes, the outer wall of the outer sleeve is hinged with a wrench, one end of the wrench is fixed with a clamping head, and the clamping head is movably clamped inside the lock holes.
Furthermore, the middle part of the clamping jaw is hinged with the outer wall of the inner sleeve, and a second spring is fixed between the inner wall of the top end of the clamping jaw and the outer wall of the inner sleeve.
Furthermore, a blind hole is formed in the outer wall of the inner sleeve corresponding to the second spring, and the inner end of the second spring is fixed to the bottom of the blind hole.
Furthermore, the middle part of the wrench is hinged with the outer wall of the outer sleeve, and a third spring is fixed between the wrench and the outer wall of the outer sleeve.
Furthermore, a long hole is vertically formed in the middle of the outer sleeve, and a reset rod fixedly connected with the inner sleeve is arranged in the long hole in a sliding mode.
Furthermore, a nut is screwed on the pull rod above the fixed frame.
The utility model has the advantages that: the product has simple structure and convenient use; when the clamping jaw is required to be opened, the elastic force of the first spring can be released by pressing the wrench, the inner sleeve is pushed downwards by the first spring, and the clamping jaw is rotated and opened under the support of the conical head to realize clamping connection with the well cover hole; when the jack catch needs to be retracted, the reset can be realized only by pulling the reset rod upwards.
Description of the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the usage state of the present invention.
The device comprises a pull rod 1, an inner sleeve 2, a blind hole 2.1, an outer sleeve 3, a fixing frame 4, a first spring 5, a conical head 6, a clamping jaw 7, a locking hole 8, a wrench 9, a clamping head 10, a second spring 11, a third spring 12, a long hole 13, a reset rod 14 and a nut 15.
The specific implementation mode is as follows:
in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, a drawing device comprises a pull rod 1, wherein a nut 15 is screwed on the pull rod 1 above a fixed frame 4, and the pull rod is conveniently clamped with a using device and is convenient to draw by arranging the nut 15; different applicable requirements can be met by adjusting the threaded position of the nut 15 on the pull rod 1; an inner sleeve 2 and an outer sleeve 3 which are arranged inside and outside are sleeved outside the middle part of the pull rod 1, the top end of the outer sleeve 3 extends to the upper part of the inner sleeve 2, and a fixing frame 4 fixed with the top end of the outer sleeve 3 is movably sleeved outside the pull rod 1; a first spring 5 is sleeved outside the pull rod 1 between the fixed frame 4 and the top end of the inner sleeve 2, locking holes 8 which are correspondingly arranged are formed in the side walls of the outer sleeve 3 and the inner sleeve 2, a spanner 9 is hinged to the outer wall of the outer sleeve 3, a clamping head 10 is fixed at one end of the spanner 9, and the clamping head 10 is movably clamped inside the locking holes 8; the middle part of the wrench 9 is hinged with the outer wall of the outer sleeve 3, a third spring 12 is fixed between the wrench 9 and the outer wall of the outer sleeve 3, in the embodiment, the third spring 12 and the chuck 10 are respectively arranged at two sides of the hinged part of the wrench 9 and the outer sleeve 3, when the other end of the wrench 9 is pressed, the third spring 12 stores force, and the wrench 9 extracts the chuck 10 from the lock hole 8; when the wrench 9 is released, the accumulated force of the third spring 12 is released to push the wrench 9 to rotate around the hinge point; when the clamping heads 10 are clamped inside the two corresponding lock holes 8, the first spring 5 is in a compressed state, and when the other end of the wrench 9 is pressed, the clamping heads 10 are drawn out of the lock holes 8 to push the inner sleeve 2 downwards under the action of the first spring 5;
the bottom end of the pull rod 1 is fixed with an expanded conical head 6, the conical head 6 can movably penetrate through a well cover hole, the bottom end of the inner sleeve 2 is hinged with at least two clamping jaws 7, and the inner walls of the clamping jaws 7 are in sliding contact with the side walls of the conical head 6; when the inner sleeve 2 slides downwards, under the guiding and supporting action of the conical head 6, the clamping jaws 7 are expanded and opened, so that the clamping connection with the hole wall is realized; preferably, the middle part of the claw 7 is hinged with the outer wall of the inner sleeve 2, and a second spring 11 is fixed between the inner wall of the top end of the claw 7 and the outer wall of the inner sleeve 2; a blind hole 2.1 is formed in the outer wall of the inner sleeve 2 corresponding to the second spring 11, and the inner end of the second spring 11 is fixed at the bottom of the blind hole 2.1; when the inner sleeve 2 slides downwards and the claws 7 are contacted with the conical head, the claws 7 rotate around the hinge points, and the second spring 11 is compressed and accumulated; when the inner sleeve 2 slides upwards and the claws 7 are separated from the conical head 6, the force accumulated by the second spring 11 is released and reset;
a long hole 13 is vertically formed in the middle of the outer sleeve 3, a reset rod 14 fixedly connected with the inner sleeve 2 is arranged in the long hole 13 in a vertically sliding mode, and after the well cover is removed, the inner sleeve 2 and the clamping jaws 7 can be integrally pulled downwards by pulling the reset rod 14 upwards along the long hole 13, so that the clamping jaws 7 and the conical heads 6 are separated and reset; the drawing device can be drawn out from the well cover hole;
instructions for use: when the jaws retract, the first spring 5 is in a compressed state, and the upper half part of the inner sleeve 2 is contracted inside the outer sleeve 3; the second spring 11 is in a natural state, and the clamping jaws 7 are attached to the lower part of the pull rod 1; the third spring 12 is in its natural state and the cartridge 10 is snapped into the lock hole 8.
When the well lid needs to be opened, the outer sleeve 3 is held, the other end of the wrench 9 is compressed, the chuck 10 is pulled out of the lock hole 8, the inner sleeve 2 is pushed downwards under the elastic action of the first spring 5, the clamping jaws 7 rotate around the hinge point to be opened under the supporting action of the conical heads 6, and the clamping jaws 7 are clamped with the well lid hole; then, the upper half part of the pull rod 1 is pulled upwards, and the well cover can be pulled upwards through the matching of the clamping jaws 7 and the well cover hole.
When the clamping jaws need to be reset, the outer sleeve is held, the reset rod 14 is pulled upwards, the inner sleeve 2 and the clamping jaws 7 can be pulled upwards integrally, when the locking holes 8 in the inner sleeve and the outer sleeve correspond to each other, the clamping heads 10 are pushed into the locking holes 8 through the spanners 9 under the action of the third springs 12, the inner sleeve and the outer sleeve are locked, and meanwhile, the clamping jaws 7 are reset to be attached to the pull rod 1 under the action of the elastic force of the second springs 11.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A drawing device is characterized by comprising a pull rod, wherein an inner sleeve and an outer sleeve are arranged inside and outside the middle of the pull rod in a sleeved mode, the top end of the outer sleeve extends to the upper portion of the inner sleeve, and a fixing frame fixed to the top end of the outer sleeve is movably sleeved outside the pull rod; a first spring is sleeved outside the pull rod between the fixed frame and the top end of the inner sleeve, an expanded conical head is fixed at the bottom end of the pull rod, at least two clamping jaws are hinged to the bottom end of the inner sleeve, and the inner walls of the clamping jaws are in sliding contact with the side walls of the conical head; the improved wrench is characterized in that the outer sleeve and the side wall of the inner sleeve are provided with correspondingly arranged lock holes, the outer wall of the outer sleeve is hinged with a wrench, one end of the wrench is fixed with a clamping head, and the clamping head is movably clamped inside the lock holes.
2. The pulling device as claimed in claim 1, wherein the middle of the claw is hinged to the outer wall of the inner sleeve, and a second spring is fixed between the top inner wall of the claw and the outer wall of the inner sleeve.
3. The pulling device as claimed in claim 2, wherein a blind hole is formed on an outer wall of the inner sleeve corresponding to the second spring, and an inner end of the second spring is fixed to a bottom of the blind hole.
4. A pulling device as claimed in any one of claims 1 to 3, wherein the middle of the wrench is hinged to the outer wall of the outer sleeve and a third spring is fixed between the wrench and the outer wall of the outer sleeve.
5. The pulling device as claimed in any one of claims 1 to 3, wherein a long hole is vertically formed in the middle of the outer sleeve, and a restoring rod fixedly connected with the inner sleeve is slidably arranged in the long hole up and down.
6. The pulling device as claimed in claim 4, wherein a long hole is vertically formed in the middle of the outer sleeve, and a restoring rod fixedly connected with the inner sleeve is slidably arranged in the long hole.
7. A pulling device as claimed in claim 1, 2, 3 or 6, wherein a nut is screwed on said pulling rod above said holder.
8. The pulling apparatus as claimed in claim 4, wherein a nut is screwed on the pulling rod above the fixing frame.
9. The pulling apparatus as claimed in claim 5, wherein a nut is screwed on the pulling rod above the fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022087070.9U CN213112452U (en) | 2020-09-21 | 2020-09-21 | Drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022087070.9U CN213112452U (en) | 2020-09-21 | 2020-09-21 | Drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213112452U true CN213112452U (en) | 2021-05-04 |
Family
ID=75663574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022087070.9U Active CN213112452U (en) | 2020-09-21 | 2020-09-21 | Drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213112452U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111713265A (en) * | 2020-06-16 | 2020-09-29 | 江苏科技大学 | Riding type mower rolling protection system and working method thereof |
| CN112239188A (en) * | 2020-09-21 | 2021-01-19 | 呼和浩特中燃城市燃气发展有限公司 | Well lid opening machine |
| CN115990858A (en) * | 2023-03-22 | 2023-04-21 | 天津津荣天宇精密机械股份有限公司 | Mechanism for drawing spring and using method thereof |
-
2020
- 2020-09-21 CN CN202022087070.9U patent/CN213112452U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111713265A (en) * | 2020-06-16 | 2020-09-29 | 江苏科技大学 | Riding type mower rolling protection system and working method thereof |
| CN112239188A (en) * | 2020-09-21 | 2021-01-19 | 呼和浩特中燃城市燃气发展有限公司 | Well lid opening machine |
| CN115990858A (en) * | 2023-03-22 | 2023-04-21 | 天津津荣天宇精密机械股份有限公司 | Mechanism for drawing spring and using method thereof |
| CN115990858B (en) * | 2023-03-22 | 2023-06-02 | 天津津荣天宇精密机械股份有限公司 | Mechanism for drawing spring and using method thereof |
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