CN203699793U - Strut self-locking and remote-unlocking device - Google Patents
Strut self-locking and remote-unlocking device Download PDFInfo
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- CN203699793U CN203699793U CN201420093391.1U CN201420093391U CN203699793U CN 203699793 U CN203699793 U CN 203699793U CN 201420093391 U CN201420093391 U CN 201420093391U CN 203699793 U CN203699793 U CN 203699793U
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- locking
- pillar
- self
- annular groove
- remote
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- 125000006850 spacer group Chemical group 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 5
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 25
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 25
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a strut self-locking and remote-unlocking device, comprising an inner pillar of the strut, an outer pillar of the strut, a locking sleeve, a locking pillar and a lock ball, wherein the locking sleeve sleeves on the inner and outer pillars of the strut, can move axially and is fixed by a limiting structure; the locking sleeve is provided with an annular lock cavity and a lock hole communicating the inner strut pillar with the annular lock cavity; one end of the locking pillar is connected with the outer pillar of the strut, and the other end stretches into the annular lock cavity and is provided with a ring slot I; a ring slot II is formed in the outer side of the inner pillar of the strut; the lock ball is arranged on the ring slot I and can enter into the ring slot II through the lock hole; the ring slot I comprises a top surface and side surfaces, the section of the top surface is a circular arc, the sections of the side surfaces are straight lines, the side surface comprises a retraction contact surface adjacent to the retraction end of the inner pillar of the strut and a supporting surface adjacent to the supporting end of the inner pillar of the strut, and the straight lines, as the sections of the two side surfaces, are tangent lines of the two ends of the circular arc, as the section of the top surface. According to the strut self-locking and remote-unlocking device, when being used for supporting, the strut can be self-locked and remotely unlocked after rescue is completed, the rescue efficiency is improved, and personal safety of rescue workers can be ensured.
Description
Technical field
The utility model relates to a kind of self-locking device, particularly a kind of self-locking of pillar and remote de-locking device.
Background technology
In recent years, pillar is widely used in traffic rescue, earthquake rescue and mine rescue, weight is propped up so that the weight that has a movable space or supporting to want to be caving plays the effect of protection.After pillar support weight, in order to guarantee safety and to support and become flexible, lock pillar.In existing technology, the locking that support function point extends to after support target normally adopts thread lock, and this efficiency that is locked in rescue process is low, in the local time that supporting is wanted to collapse, thread lock is due to duration, and can not realize remote auto locking and remote de-locking operates.Thread lock had not only extended rescue time but also can not ensure rescue group's personal safety.
Therefore, be necessary to research and develop a kind of self-locking and remote de-locking device of pillar, it has remote lock and unlocking function, can in the time of pillar supporting, realize remote auto locking, and can remote de-locking after rescue completes, to guarantee the personal safety of rescue group in rescue process and to improve the efficiency of rescue.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of self-locking and remote de-locking device of pillar, can in the time of pillar supporting, realize remote auto locking, and can remote de-locking after rescue completes, to guarantee the personal safety of rescue group in rescue process and to improve the efficiency of rescue.
The self-locking of pillar of the present utility model and remote de-locking device, comprise pillar inner prop and pillar column jacket, also comprise locking cover, locking column and lock ball, described locking cover is sheathed on described pillar inner prop and pillar column jacket also can move axially and fix by position limiting structure outward, described locking is arranged with ring lock chamber and is communicated with the lockhole in described pillar inner prop and ring lock chamber, one end of described locking column is connected with described pillar column jacket, the other end stretches into described ring lock chamber and is provided with annular groove I, the outside of described pillar inner prop is provided with annular groove II, described lock ball is located in described annular groove I and can be entered described annular groove II by described lockhole, described annular groove I comprises that cross section is the end face of circular arc and the side that cross section is straight line, and described side comprises near the retraction contact surface of described pillar inner prop retraction end and the support face of close described pillar inner prop support end, the tangent line at the circular arc two ends, cross section that described in two, the cross section straight line of side is described end face, ultimate range described in two between tangent line is greater than the diameter of described lockhole near one end, described ring lock chamber, in described lock ball is fastened on described annular groove II and be subject to the retraction application force of described pillar inner prop and when described retraction contact surface is formed to extruding, the angle between retraction application force and the normal of described retraction contact surface is less than the self-locking angle of described lock ball.
Further, described lockhole is the taper hole that outer imperial palace is little, and its diameter near described pillar inner prop one end is less than the diameter of described lock ball.
Further, the cross section of described annular groove II is circular arc, and described end face is identical with the radius of described lock ball with the arc radius of annular groove II.
Further, described locking cover comprises the locking overcoat and the lock ball fixed mount that connect with removably, described locking overcoat is enclosed within outside described pillar column jacket, and described lock ball fixed mount is enclosed within outside described pillar inner prop, forms described ring lock chamber between described locking overcoat and lock ball fixed mount.
Further, described position limiting structure is the flexible spring vertically of being located between described locking overcoat and locking column.
Further, between described locking cover and locking column, form two adjacent and release chamber I and the release chamber II separated by spacer, described release chamber II is connected with solution latching connector, high-pressure fluid enters described release chamber II by described solution latching connector and impels described spacer to the motion of described release chamber I, and described locking cover is moved axially.
Further, II inner two ends in described release chamber are equipped with seal ring.
Further, described release chamber II is by described locking cover, spacer, locking column and be fixed on spacing ring on described pillar column jacket and enclose and form, and described spacer and described locking cover one-body molded.
Further, two described annular groove I and two row's lockholes are at least set, the described lockhole of every row is all along the circumferentially evenly setting in described ring lock chamber, and the outside of described pillar inner prop is at least provided with nine described annular groove II, and the interval of the interval of adjacent two described annular groove II and the described lockhole of adjacent two row is identical.
Further, between described locking column and pillar column jacket, between described locking overcoat and lock ball fixed mount and described release chamber II and separate between latching connector and be and be threaded.
The beneficial effects of the utility model: the self-locking of pillar of the present utility model and remote de-locking device, remote auto locking and can remote de-locking after rescue completes while having realized pillar support, has ensured rescue group's personal safety; After pillar support, automatically form self-locking, need not operate separately, release need not be by other instruments, have improved the efficiency of rescue, for the valuable time has been striven in rescue; This apparatus structure compactness, light small and exquisite, for pillar has alleviated weight, is convenient to rescue group and carries, and has further improved rescue efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the structural representation of self-locking state of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the structural representation of released state of the present utility model;
Fig. 4 is self-locking of the present utility model position partial schematic diagram;
Fig. 5 is the stressed schematic diagram of the utility model in the time of self-locking;
The front schematic view of self-locking state when Fig. 6 is the utility model manual unlocking;
The front schematic view of released state when Fig. 7 is the utility model manual unlocking.
The specific embodiment
Fig. 1 is the structural representation of self-locking state of the present utility model, Fig. 3 is the structural representation of released state of the present utility model, as shown in the figure: the self-locking of the pillar of the present embodiment and remote de-locking device, comprise pillar inner prop 1 and pillar column jacket 2, also comprise locking cover, locking column 4 and lock ball 5, described locking cover is sheathed on outside described pillar inner prop 1 and pillar column jacket 2 and can moves axially and fix by position limiting structure, described locking is arranged with ring lock chamber 33 and is communicated with the lockhole 34 in described pillar inner prop 1 and ring lock chamber 33, one end of described locking column 4 is connected with described pillar column jacket 2, the other end stretches into described ring lock chamber 33 and is provided with annular groove I 41, the outside of described pillar inner prop 1 is provided with annular groove II 11, described lock ball 5 is located in described annular groove I 41 and can be entered described annular groove II 11 by described lockhole 34, described annular groove I 41 comprises that cross section is the end face 41a of circular arc and the side that cross section is straight line, and described side comprises near the described pillar inner prop 1 retraction contact surface 41b of retraction end and the support face 41c of close described pillar inner prop 1 support end, described in two, the cross section straight line of side is the tangent line at the circular arc two ends, cross section of described end face 41a, ultimate range described in two between tangent line is greater than the diameter of described lockhole 34 near 33 one end, described ring lock chamber, in described lock ball 5 is fastened on described annular groove II 11 and be subject to the retraction application force of described pillar inner prop 1 and when described retraction contact surface 41b is formed to extruding, the angle between retraction application force and the normal of described retraction contact surface 41b is less than the self-locking angle of described lock ball 5, pillar is made up of pillar inner prop 1 and pillar column jacket 2, and its B-C post inner prop 1 is enclosed within pillar column jacket 2 and can have moved axially support (to Fig. 1 in left side motion) and retraction (moving to right side in Fig. 1), lock ball 5 is preferably high-intensity steel ball, self-locking refers to and stops the retraction of pillar inner prop 1 but do not affect its support, and release refers to that pillar inner prop 1 can freely bounce back.
The switching of self-locking state and released state is having moved axially of overlapping by locking, when self-locking state, limited location structure between locking cover and locking column 4, because locking column 4 is fixed on pillar column jacket 2, by position limiting structure limitation locking cover, play the object that compresses lock ball 5, the annular groove II 11 in pillar inner prop 1 outside, its radius is consistent with the radius of lock ball 5, in the time being in Fig. 1 position, the lower lock ball 5 of effect that locking is enclosed within position limiting structure is pressed in annular groove II 11, in the time that pillar inner prop 1 bounces back, annular groove II 11 promotes lock ball 5 and outwards moves, force-bearing situation as shown in Figure 5, because the angle C between thrust F direction and the normal of retraction contact surface 41b is less than self-locking angle, therefore lock ball 5 can not move, pillar inner prop 1 can not bounce back, form self-locking, in like manner, in the time of pillar inner prop 1 support, because the angle (not shown) between thrust direction and the normal of retraction contact surface 41b is greater than self-locking angle, lock ball 5 is to the interior movement of annular groove I 41, and depart from the track that pillar inner prop 1 moves, pillar inner prop 1 can freely stretch but can not bounce back in the position of locking as can be seen here, so pillar completes and automatically locks in support process, when released state, the moving lock ball 5 of the axial moving belt of locking cover moves, and the retraction contact surface 41b of lock ball 5 separating lock fixed columns 4, because pillar inner prop 1 is to lock ball 5 effect radially, outwards moves lock ball 5, departs from the path of motion of pillar inner prop 1, finally realizes release, the shape of annular groove I 41 directly affects self-locking and the unlocking function of this device, as shown in Figure 4, the cross section of annular groove I 41 is made up of three lines, is respectively one section of circular arc and two ends tangent line thereof, and the degree of depth of annular groove I 41 is can guarantee that when lock ball 5 enters in groove lock ball 5 departs from the track that pillar inner prop 1 moves, angle A should be able to meet between retraction contact surface 41b and adjacent support face 41c enough thickness, and when assurance self-locking, annular groove I 41 can be born the pressure of lock ball 5, angle B is related to the key point of the successfully self-locking of this device and release, included angle A and angle E complementary angle each other, and the complementary angle determining the size of angle C each other of the angle D in included angle B and Fig. 5, angle C must be less than self-locking angle, the actual value of self-locking angle is subject to lock ball 5 size and contacts with lock ball 5 and the static friction force that forms is relevant, and those skilled in the art can calculate its number range according to theoretical calculation method.
In the present embodiment, described lockhole 34 is the taper hole that outer imperial palace is little, and its diameter near described pillar inner prop 1 one end is less than the diameter of described lock ball 5; , refer to the side of lockhole 34 near ring lock chamber 33 outward herein, inside refer to the side of lockhole 34 near pillar inner prop 1; Taper hole and lock ball 5 shape fits are high, and effectively support lock ball 5 strengthens self-locking effect, and lock ball 5 drops while preventing from taking out pillar inner prop 1.
In the present embodiment, the cross section of described annular groove II 11 is circular arc, and described end face 41a is identical with the radius of described lock ball 5 with the arc radius of annular groove II 11; The arc length that cross section circular arc arc length and the lock ball 5 of annular groove II 11 stretches out lockhole 34 parts is consistent, to form effective self-locking.
In the present embodiment, described locking cover comprises the locking overcoat 31 and the lock ball fixed mount 32 that connect with removably, described locking overcoat 31 is enclosed within outside described pillar column jacket 2, described lock ball fixed mount 32 is enclosed within outside described pillar inner prop 1, forms described ring lock chamber 33 between described locking overcoat 31 and lock ball fixed mount 32; The pressure suffered due to lock ball 5 is larger, and easily wearing and tearing, being out of shape and causing self-locking inefficacy, locking cover is combiner, is convenient to Assembly &Disassembly, to change in time lock ball 5 or other parts.
In the present embodiment, described position limiting structure is the flexible spring 6 vertically of being located between described locking overcoat 31 and locking column 4; Spring 6 is stage clip; Between locking overcoat 31 and locking column 4, form spring fitting groove 61; Utilize the elasticity of spring 6 to carry out position and lock cover, and compress lock ball 5.
In the present embodiment, between described locking cover and locking column 4, form two release adjacent and that separated by spacer 35 chamber I 71 and release chamber II 72, described release chamber II 72 is connected with separates latching connector 8, high-pressure fluid is entered described release chamber II 72 and is impelled described spacer 35 to move to described release chamber I 71 by described solution latching connector 8, and described locking cover is moved axially; High-pressure fluid refers in particular to high pressure gas or highly pressurised liquid; The cumulative volume of release chamber I 71 and release chamber II 72 is certain, but will drive spacer 35 to move when locking cover is mobile, thereby the volume of release chamber I 71 and release chamber II 72 is changed thereupon, and vice versa; Certainly, this device also can be simplified to the manual unlocking structure as Fig. 6 and Fig. 7, and the resistance that overcomes position limiting structure by manpower manual moves locking cover.
In the present embodiment, II 72 inner two ends, described release chamber are equipped with seal ring 91; Because locking cover is removable, for the leak tightness that guarantees release chamber II 72 is to complete smoothly release, establish cavity that seal ring 91, two seal rings 91 surround at II 72 two ends, release chamber and separate the container cavity of latching connector 8 fluid of discharging, the increase of this cavity volume can reach the movement of Long-distance Control locking cover.
In the present embodiment, described release chamber II 72 is by described locking cover, spacer 35, locking column 4 and be fixed on spacing ring 92 on described pillar column jacket 2 and enclose and form, and described spacer 35 is one-body molded with described locking cover; Spacing ring 92 is for limiting the position of a side seal circle 91, and 91 of opposite side seal rings are undertaken spacing by spacer 35; Spacing ring 92 is fixed by screw; Spacer 35 is one-body molded with locking cover, is formed by locking cover indent, to strengthen the intensity of spacer 35, is convenient to processing and manufacturing.
In the present embodiment, two described annular groove I 41 and two row's lockholes 34 are set, the described lockhole 34 of every row is circumferentially evenly arranging along described ring lock chamber 33 all, the outside of described pillar inner prop 1 is provided with nine described annular groove II 11, and the interval of adjacent two described annular groove II 11 is identical with the interval of the described lockhole 34 of adjacent two row; Annular groove I 41, lockhole 34 can be realized the continuous locking to pillar with coordinating of annular groove II 11; Certainly, the concrete quantity of these parts can be selected according to actual conditions.
In the present embodiment, between described locking column 4 and pillar column jacket 2, between described locking overcoat 31 and lock ball fixed mount 32 and described release chamber II 72 and separate between latching connector 8 and be and be threaded; Realize and removably connecting by screw thread pair is set, it manufactures simple, connect reliable, easy to use, commonality is good.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (10)
1. the self-locking of a pillar and remote de-locking device, comprise pillar inner prop and pillar column jacket, it is characterized in that: also comprise locking cover, locking column and lock ball, described locking cover is sheathed on described pillar inner prop and pillar column jacket also can move axially and fix by position limiting structure outward, described locking is arranged with ring lock chamber and is communicated with the lockhole in described pillar inner prop and ring lock chamber, one end of described locking column is connected with described pillar column jacket, the other end stretches into described ring lock chamber and is provided with annular groove I, the outside of described pillar inner prop is provided with annular groove II, described lock ball is located in described annular groove I and can be entered described annular groove II by described lockhole, described annular groove I comprises that cross section is the end face of circular arc and the side that cross section is straight line, and described side comprises near the retraction contact surface of described pillar inner prop retraction end and the support face of close described pillar inner prop support end, the tangent line at the circular arc two ends, cross section that described in two, the cross section straight line of side is described end face, ultimate range described in two between tangent line is greater than the diameter of described lockhole near one end, described ring lock chamber, in described lock ball is fastened on described annular groove II and be subject to the retraction application force of described pillar inner prop and when described retraction contact surface is formed to extruding, the angle between retraction application force and the normal of described retraction contact surface is less than the self-locking angle of described lock ball.
2. the self-locking of pillar according to claim 1 and remote de-locking device, is characterized in that: described lockhole is the taper hole that outer imperial palace is little, and its diameter near described pillar inner prop one end is less than the diameter of described lock ball.
3. the self-locking of pillar according to claim 2 and remote de-locking device, is characterized in that: the cross section of described annular groove II is circular arc, and described end face is identical with the radius of described lock ball with the arc radius of annular groove II.
4. the self-locking of pillar according to claim 3 and remote de-locking device, it is characterized in that: described locking cover comprises the locking overcoat and the lock ball fixed mount that connect with removably, described locking overcoat is enclosed within outside described pillar column jacket, described lock ball fixed mount is enclosed within outside described pillar inner prop, forms described ring lock chamber between described locking overcoat and lock ball fixed mount.
5. the self-locking of pillar according to claim 4 and remote de-locking device, is characterized in that: described position limiting structure is the flexible spring vertically of being located between described locking overcoat and locking column.
6. the self-locking of pillar according to claim 5 and remote de-locking device, it is characterized in that: between described locking cover and locking column, form two adjacent and release chamber I and the release chamber II separated by spacer, described release chamber II is connected with solution latching connector, high-pressure fluid enters described release chamber II by described solution latching connector and impels described spacer to the motion of described release chamber I, and described locking cover is moved axially.
7. the self-locking of pillar according to claim 6 and remote de-locking device, is characterized in that: II inner two ends in described release chamber are equipped with seal ring.
8. the self-locking of pillar according to claim 7 and remote de-locking device, it is characterized in that: described release chamber II is by described locking cover, spacer, locking column and be fixed on spacing ring on described pillar column jacket and enclose and form, and described spacer and described locking cover one-body molded.
9. the self-locking of pillar according to claim 8 and remote de-locking device, it is characterized in that: two described annular groove I and two row's lockholes are at least set, the described lockhole of every row is circumferentially evenly arranging along described ring lock chamber all, the outside of described pillar inner prop is at least provided with nine described annular groove II, and the interval of adjacent two described annular groove II is identical with the interval of the described lockhole of adjacent two row.
10. the self-locking of pillar according to claim 9 and remote de-locking device, is characterized in that: between described locking column and pillar column jacket, between described locking overcoat and lock ball fixed mount and described release chamber II and separate between latching connector and be and be threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093391.1U CN203699793U (en) | 2014-03-03 | 2014-03-03 | Strut self-locking and remote-unlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093391.1U CN203699793U (en) | 2014-03-03 | 2014-03-03 | Strut self-locking and remote-unlocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203699793U true CN203699793U (en) | 2014-07-09 |
Family
ID=51050261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420093391.1U Expired - Lifetime CN203699793U (en) | 2014-03-03 | 2014-03-03 | Strut self-locking and remote-unlocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203699793U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818842A (en) * | 2014-03-03 | 2014-05-28 | 中煤科工集团重庆研究院有限公司 | Self-locking and remote unlocking device of support |
| CN110871367A (en) * | 2018-08-31 | 2020-03-10 | 兄弟工业株式会社 | Door opening/closing device and machine tool |
-
2014
- 2014-03-03 CN CN201420093391.1U patent/CN203699793U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818842A (en) * | 2014-03-03 | 2014-05-28 | 中煤科工集团重庆研究院有限公司 | Self-locking and remote unlocking device of support |
| CN103818842B (en) * | 2014-03-03 | 2016-06-01 | 中煤科工集团重庆研究院有限公司 | The self-locking of pillar and remote de-locking device |
| CN110871367A (en) * | 2018-08-31 | 2020-03-10 | 兄弟工业株式会社 | Door opening/closing device and machine tool |
| CN110871367B (en) * | 2018-08-31 | 2022-07-01 | 兄弟工业株式会社 | Door opening/closing device and machine tool |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |