CN210795622U - Mechanical self-locking jack - Google Patents
Mechanical self-locking jack Download PDFInfo
- Publication number
- CN210795622U CN210795622U CN201921086795.7U CN201921086795U CN210795622U CN 210795622 U CN210795622 U CN 210795622U CN 201921086795 U CN201921086795 U CN 201921086795U CN 210795622 U CN210795622 U CN 210795622U
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- locking
- telescopic rod
- jack
- cover plate
- mechanical self
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Abstract
The utility model discloses a machinery auto-lock jack, include: a cylinder body; the telescopic rod slides along the cylinder body, and a plurality of groups of locking grooves are arranged on the outer side wall of the telescopic rod along the motion direction of the extension locking rod; the locking assembly is matched with the locking groove and used for locking the telescopic rod; and the unlocking assembly is used for controlling the matching state of the locking assembly and the locking groove. The utility model discloses a telescopic link and auto-lock subassembly cooperation realize the auto-lock during telescopic link operating condition, reduce the jack because the phenomenon of the too big oil leak of pressure reduces the potential safety hazard in the production process simultaneously.
Description
Technical Field
The utility model relates to a jack especially relates to a machinery auto-lock jack.
Background
The jack is in operating condition for a long time and the phenomenon of not hard up oil leak can appear, produces the displacement of removing, influences whole work precision and the life of jack, and the jack can't the auto-lock can lead to the load to drop in the course of the work simultaneously, brings the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can effectively solve above-mentioned technical problem's mechanical auto-lock jack.
In order to achieve the purpose of the utility model, the following technical proposal is adopted: a mechanical self-locking jack comprising:
a cylinder body;
the telescopic rod slides along the cylinder body, and a plurality of groups of locking grooves are arranged on the outer side wall of the telescopic rod along the motion direction of the extension locking rod;
the locking assembly is matched with the locking groove and used for locking the telescopic rod;
and the unlocking assembly is used for controlling the matching state of the locking assembly and the locking groove.
Preferably, the locking assembly comprises: a housing and a plurality of locking blocks; one end of the shell is fixedly connected with the cylinder body, and the shell is provided with a first through hole for the telescopic rod to pass through; and a supporting part hinged with the locking block is arranged in the shell.
Preferably, four locking grooves are arranged in a group around the axis.
Preferably, the unlocking assembly comprises: a cover plate and a plurality of bolts; the cover plate is connected with the other end of the shell, and the cover plate rotates around the axis of the telescopic rod; the cover plate is provided with a second through hole for the telescopic rod to pass through; locking piece one end and locking groove cooperation, be equipped with on the apron with locking piece other end complex a plurality of V type grooves, rounding off between per two V type grooves.
Preferably, a spring for resetting the locking block is arranged between the shell and the locking block.
Preferably, the lock block and the housing are provided with a guide portion for supporting the spring.
Preferably, the cover plate is provided with a kidney-shaped hole for controlling the movement angle of the cover plate, and the bolt passes through the kidney-shaped hole and is fixedly connected with the shell.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. through telescopic link and auto-lock subassembly cooperation, auto-lock when realizing telescopic link operating condition reduces the jack because the phenomenon of the too big oil leak of pressure, reduces the potential safety hazard in the production process simultaneously.
2. The locking assembly and the locking groove are controlled to be matched through the unlocking assembly, and operation difficulty in the working process is reduced.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
Fig. 1 is a schematic view of the overall structure of a mechanical self-locking jack according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the overall structure of the mechanical self-locking jack according to the embodiment of the present invention;
fig. 3 is a cross-sectional view of the unlocking assembly and the locking assembly according to the embodiment of the present invention;
fig. 4 is a partial enlarged view of the embodiment of the present invention shown in fig. 3A.
Description of the figures
1. The locking device comprises a cylinder body 2, an expansion rod 3, a locking groove 4, a shell 5, a locking block 6, a first through hole 7, a supporting part 8, a cover plate 9, a bolt 10, a second through hole 11, a V-shaped groove 12, a kidney-shaped hole 14, a spring 15, a guide part 16, a high point 17, a low point 18, a first locking surface 19, a second locking surface 20, a first contact surface 21 and a second contact surface.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in figure 1, the mechanical self-locking jack comprises a cylinder body 1, wherein a telescopic rod 2 is arranged in the cylinder body 1 in a sliding mode. The outer side wall of the telescopic rod 2 is provided with a plurality of groups of locking grooves 3 along the motion direction of the telescopic rod 2, and the four locking grooves 3 are arranged into a group around the axis of the telescopic rod 2. The telescopic link 2 is matched with the locking groove 3 through the locking assembly to realize locking of the telescopic link 2.
As shown in fig. 2 and 3, the locking assembly includes: casing 4 and four locking pieces 5, locking piece 5 are arranged around 2 axes of telescopic link, and locking piece 5 all cooperates with locking groove 3. One end of the shell 4 is fixedly connected with the cylinder body 1 through a screw, and the shell 4 is provided with a first through hole 6 for the telescopic rod 2 to pass through. A supporting part 7 hinged with the locking block 5 is arranged in the shell 4, and the hinge point is positioned in the middle of the locking block 5.
The jack needs to control the locking assembly and the locking groove 3 through the unlocking assembly, and the unlocking assembly comprises: a cover plate 8 and two bolts.
As shown in fig. 2, the cover plate 8 is connected to the other end of the housing 4 by a bolt 9, the cover plate 8 is provided with a plurality of kidney-shaped holes 12, the bolt 9 passes through the kidney-shaped holes 12 to be fixedly connected with the housing 4, and the kidney-shaped holes 12 cooperate with the bolt 9 to control the rotation angle of the cover plate 8. The cover plate 8 rotates around the axis of the telescopic rod 2, and the cover plate 8 is provided with a second through hole 10 for the telescopic rod 2 to pass through.
5 one end of lock block and the cooperation of locking groove 3 are equipped with on the apron 8 with 5 other end complex four V type grooves 11 of lock block, 11 rounding off in per two V type grooves.
As shown in fig. 4, the transition point of the two V-grooves 11 is a low point 17, and a high point 16 is arranged between the two low points 17.
As shown in fig. 3 and 4, when the cover plate 8 brings one end of the kidney-shaped hole 12 into contact with the bolt 9, the low point 17 of the V-shaped groove 11 is in contact with one end of the locking block 5. As shown in fig. 2, the locking block 5 is engaged with the locking groove 3 to realize locking.
As shown in fig. 3 and 4, when the cover plate 8 brings the other end of the kidney-shaped hole 12 into contact with the bolt 9, the high point 16 of the V-shaped groove 11 moves to above the other end of the locking block 5. Be equipped with between locking piece 5 and the casing 4 and be used for the spring 14 that locking piece 5 reset, locking piece 5 and casing 4 all are equipped with the guide part 15 that is used for supporting spring 14, and guide part 15 reduces the deformation of spring 14, extension spring 14's life.
As shown in fig. 3 and 4, the lock block 5 is pivoted at a hinge point with the support portion 7 by the spring 14, and the other end of the lock block 5 is in contact with the high point 16. As shown in fig. 2, the locking block 5 is disengaged from the locking groove 3, and the telescopic rod 2 is retracted into the cylinder body 1.
As shown in fig. 2 to 4, in operation, the telescopic rod 2 moves towards the outside of the cylinder 1 under the action of hydraulic oil, the rotating cover plate 8 drives the low point 17 of the V-shaped groove 11 to contact with the locking block 5, the contact end of the locking block 5 and the telescopic rod 2 is provided with a first locking surface 18 and a first contact surface 20, and the locking groove 3 is provided with a second locking surface 19 and a second contact surface 21.
As shown in fig. 2, when the telescopic rod 2 moves upwards, the first contact surface 20 contacts with the second contact surface 21, and the locking block 5 is driven to rotate along the movement direction of the telescopic rod 2, thereby compressing the spring 14. Because a plurality of locking grooves 3 are arranged on the outer side wall of the telescopic rod 2 along the moving direction of the telescopic rod 2. When the first contact surface 20 is disengaged from the second contact surface 21, the lock block 5 is reset by the spring 14, and the first lock surface 18 is brought into contact with the second lock surface 19.
When the telescopic rod 2 continuously moves upwards, the locking block 5 continuously repeats the actions. When the telescopic rod 2 stops moving upwards, the first locking surface 18 is in contact with the second locking surface 19, the telescopic rod 2 gives a downward force to the locking block 5, and the locking block 5 is in contact with the low point 17 of the V-shaped groove 11 to realize locking.
After the work is accomplished, rotate apron 8, the other end and the bolt 9 contact of waist type hole 12, when telescopic link 2 down, locking piece 5 rotates along 2 direction of motion of telescopic link, 5 one end of locking piece and the contact of 11 high points in V type groove 16, and 5 other ends of locking piece break away from locking groove 3 simultaneously, and telescopic link 2 contracts to the cylinder body 1 in, and work is accomplished.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Claims (7)
1. A mechanical self-locking jack, comprising:
a cylinder body;
the telescopic rod slides along the cylinder body, and a plurality of groups of locking grooves are arranged on the outer side wall of the telescopic rod along the motion direction of the extension locking rod;
the locking assembly is matched with the locking groove and used for locking the telescopic rod;
and the unlocking assembly is used for controlling the matching state of the locking assembly and the locking groove.
2. The mechanical self-locking jack of claim 1, wherein the locking assembly comprises: a housing and a plurality of locking blocks; one end of the shell is fixedly connected with the cylinder body, and the shell is provided with a first through hole for the telescopic rod to pass through; and a supporting part hinged with the locking block is arranged in the shell.
3. The mechanical self-locking jack of claim 1, wherein four locking grooves are arranged in a group about the axis.
4. The mechanical self-locking jack of claim 2, wherein the unlocking assembly comprises: a cover plate and a plurality of bolts; the cover plate is connected with the other end of the shell, and the cover plate rotates around the axis of the telescopic rod; the cover plate is provided with a second through hole for the telescopic rod to pass through; locking piece one end and locking groove cooperation, be equipped with on the apron with locking piece other end complex a plurality of V type grooves, rounding off between per two V type grooves.
5. The mechanical self-locking jack according to claim 2, wherein a spring for returning the locking block is provided between the housing and the locking block.
6. The mechanical self-locking jack of claim 5, wherein the locking block and the housing are provided with guides for supporting a spring.
7. The mechanical self-locking jack according to claim 4, wherein the cover plate is provided with a kidney-shaped hole for controlling the movement angle of the cover plate, and the bolt passes through the kidney-shaped hole and is fixedly connected with the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921086795.7U CN210795622U (en) | 2019-07-11 | 2019-07-11 | Mechanical self-locking jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921086795.7U CN210795622U (en) | 2019-07-11 | 2019-07-11 | Mechanical self-locking jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210795622U true CN210795622U (en) | 2020-06-19 |
Family
ID=71241480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921086795.7U Active CN210795622U (en) | 2019-07-11 | 2019-07-11 | Mechanical self-locking jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210795622U (en) |
-
2019
- 2019-07-11 CN CN201921086795.7U patent/CN210795622U/en active Active
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