CN202347953U - Locking device and well cover - Google Patents
Locking device and well cover Download PDFInfo
- Publication number
- CN202347953U CN202347953U CN201120372324XU CN201120372324U CN202347953U CN 202347953 U CN202347953 U CN 202347953U CN 201120372324X U CN201120372324X U CN 201120372324XU CN 201120372324 U CN201120372324 U CN 201120372324U CN 202347953 U CN202347953 U CN 202347953U
- Authority
- CN
- China
- Prior art keywords
- pull bar
- sleeve
- inner core
- blocking device
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a locking device and a well cover. The locking device comprises a sleeve, a drawbar penetrating out of the sleeve, a clamping element connected to the drawbar and positioned outside of sleeve, and an elastic device, wherein the clamping element is provided with a butting end for clamping the inner wall of a well head; the elastic device is elastically compressed between the sleeve and the drawbar and pushes the drawbar toward the direction opposite to the clamping element on the drawbar in the axial direction of the sleeve; a positioning pin is arranged on the side surface of the drawbar, a circumferential groove for accommodating the positioning pin to conduct circumferential rotation is arranged on the inner side wall of the sleeve; and a positioning concave part extending in the axial direction is arranged on the side of the drawbar in the direction opposite to the clamping element. The well cover is provided with a mounting hole, and the sleeve passes through the mounting hole and is connected with the well cover. The locking device provided by the invention is suitable for various inner walls of well heads, and can realize clamping no matter steps are arranged on the inner walls of the well heads or not.
Description
Technical field
The utility model relates to a kind of well lid of locking the blocking device of well lid and having this blocking device.
Background technology
Most of well lid normally covers at the well head place by deadweight, and well lid is just supported by well head, and the lifting hole that need prize the edge of well lid or lift well lid just can make well lid remove from well head.Such well lid is separated with well head owing to reason artificial or burst is very easy, causes well head exposed, brings potential safety hazard, also makes the inoperative personnel get into easily in the well, and theft destroys facilities such as interior heating and supplying water switch of well or cable and optical cable.
In order to prevent that well lid from arbitrarily being opened, the well lid or the blocking device of anti-theft feature appearred having.For example, Chinese utility model 00265908.5 discloses a kind of blocking device, and this utility model adopts spring lock formula locking mechanism; This locking device comprises flute profile lock shell, and one stretches out the dead bolt of this lock shell, and this dead bolt stretches out in outside the lock shell; Dead bolt is connected in opening device; This dead bolt is ejected outside the lock shell by an elasticity liftout attachment at least, and the dead bolt external part is formed with a resolution of forces face meeting to closing direction at least, forms catch surface with this corresponding surface that decomposes face.During locking, the well head inwall that the dead bolt bump is step-like is shunk by the effect of elasticity liftout attachment, is stuck on the step-like well head inwall through behind the step-like well head inwall.This spring lock formula locking mechanism only is applicable to the well head with step-like well head inwall, is not suitable for the well head of straight tube or the less well head of step of well head inwall.
The utility model content
The utility model aims to provide a kind of blocking device, is difficult to well lid is locked at the well head of straight tube or the less well head of step of well head inwall to solve existing blocking device.
For this reason, the utility model proposes a kind of blocking device, and said blocking device comprises: sleeve; Pull bar wears out said sleeve; Card-bit part is connected on the said pull bar and is positioned at outside the said sleeve, and said card-bit part has the thrust end that blocks the well head inwall; Elastic device, this elastic device elasticity is pressed between said sleeve and the said pull bar, and along said sleeve axially towards with pull bar on the opposite said pull bar of direction pushing tow of card-bit part; The side of said pull bar has alignment pin, the inside wall of said sleeve have hold circumferential slot that said alignment pin circumferentially rotates and said circumferential slot with pull bar on have axially extended location indentations on the rightabout side of card-bit part.
Further, said blocking device also comprises: the rotating inner core that is sheathed in the said sleeve; Said pull bar can axially movable wear out the inner chamber of said inner core; The external surface of said inner core is provided with and holds the axially movable inner core open slot of said alignment pin; Said inner core open slot is communicated with the inner chamber of said inner core, and said location indentations and said circumferential slot are interconnected with said inner core open slot respectively.
Further; The top of said inner core has axially extended top through hole; Said top through hole is circumferentially located the top of said pull bar, and said top through hole is communicated with the axially movable passage in the top that forms said pull bar with the inner chamber of said inner core, and said inner core open slot is circumferentially located said alignment pin; The bottom of said pull bar passes said inner core and said sleeve, and said card-bit part is connected the bottom of said pull bar.
Further; The top of said pull bar is a cuboid; Said top through hole is a rectangular through holes, and at the locking state of said blocking device, the top of said pull bar is arranged in said top through hole; Said alignment pin passes said inner core open slot and is arranged in said location indentations, and said thrust end blocks the inwall of well head; At the released state of said blocking device, the top of said pull bar is arranged in the inner chamber of said inner core, and said alignment pin passes said inner core open slot and is arranged in said circumferential slot, and said thrust end departs from out the inwall of said well head.
Further; Said blocking device also comprises: the holder of clamping well lid; Removable being set on the said sleeve, said sleeve have diapire and the bottom through hole that passes said diapire, and said elastic device is a spring; Said pull bar has the face that compresses that compresses said elastic device, and said elastic device is pressed between the diapire of the face that compresses and said sleeve of said pull bar.
Further, the external surface of said sleeve has screw thread, and said holder is two collars with internal thread, and said two collars are screwed onto respectively on the said sleeve, and the spacing of said two collars equals the thickness of said well lid.
Further; Said card-bit part comprises: the connecting portion that is connected with said pull bar; Has the connecting hole that is connected with the bottom of said pull bar in the said connecting portion; Said card-bit part also comprises: be connected the grab of said connecting portion side direction, said grab is bent upwards, and said thrust end is positioned at the end of said grab.
Further; Said connecting portion is a cuboid; Said connecting hole is a long slot bore, and the bottom of said pull bar movably is arranged in the said long slot bore, and the bottom of said pull bar has external screw thread; Two nuts are screwed onto the bottom of said pull bar respectively, and said connecting portion is folded between said two nuts.
Further; Said alignment pin is cylindrical, is arranged on the side direction of said pull bar and is positioned under the top of said pull bar, and said inner core open slot and said circumferential slot are long trough; Said inner core open slot extends axially along said inner core; Said circumferential slot circumferentially extends along said urceolus, and said location indentations is groove or hole, and said location indentations and said circumferential slot are communicated with.
The utility model also proposes a kind of well lid, and said well lid has installing hole, and sleeve passes said installing hole and is connected with said well lid.
The utility model moves to the alignment pin on the pull bar the circumferential slot from location indentations through depressing elastic device, then through the rotation of alignment pin in circumferential slot; Pull bar drives the card-bit part rotation and blocks the well head inwall; This locking mode is rotary type locking, is different from existing spring lock formula locking mechanism, does not need the well head inwall to have step; Thereby no matter whether the well head inwall has step, does not influence the locking of the utility model to well lid.
Description of drawings
Fig. 1 is the main TV structure sketch map according to the blocking device of the utility model embodiment, and wherein, pull bar is in locking state;
Fig. 2 is the main TV structure sketch map according to the blocking device of the utility model embodiment, and wherein, pull bar is in released state;
Fig. 3 is the main TV structure according to the sleeve of the utility model embodiment;
Fig. 4 is the stereochemical structure according to the inner core of the utility model embodiment;
Fig. 5 is the broken section structural representation according to the blocking device of the utility model embodiment, and wherein, pull bar is in locking state;
Fig. 6 is the broken section structural representation according to the blocking device of the utility model embodiment, and wherein, pull bar is in released state;
Fig. 7 is the plan structure sketch map according to the blocking device of the utility model embodiment;
Fig. 8 is the main TV structure according to the card-bit part of the utility model embodiment;
Fig. 9 is the plan structure according to the card-bit part of the utility model embodiment;
Figure 10 is for being installed on the sectional structure on the well head according to the blocking device of the utility model embodiment, and wherein, pull bar is in locking state, and card-bit part is stuck on the inwall of well head of card platform shape;
Figure 11 is installed on the sectional structure on the well head for the blocking device according to the utility model embodiment, and wherein, pull bar is in released state, and card-bit part breaks away from the inwall of the well head of card platform shape;
Figure 12 is for being installed on the sectional structure on the well head according to the blocking device of the utility model embodiment, and wherein, pull bar is in locking state, and card-bit part is stuck on the inwall of well head of straight-tube shape;
Figure 13 is installed on the sectional structure on the well head for the blocking device according to the utility model embodiment, and wherein, pull bar is in released state, and card-bit part breaks away from the inwall of the well head of straight-tube shape.
The drawing reference numeral explanation:
10, sleeve 101, diapire 103, location indentations 105, circumferential slot 107, stomidium
109, bottom through hole 20, well lid 30, inner core 301, top through hole 303, inner core open slot
40, the inwall 50 of well head 401, well head, holder 60, elastic device 70, pull bar
701, the top 703 of pull bar, alignment pin 705, card platform 80, nut 90, card-bit part
901, connecting portion 903, connecting hole 905, grab 9051, thrust end
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
As depicted in figs. 1 and 2, comprise according to the blocking device of the utility model embodiment: sleeve 10, pull bar 70, card-bit part 90 and elastic device 60.
As shown in Figure 3, sleeve 10 can be used for passing well lid, to realize and being connected of well lid.Sleeve 10 is generally cylinder, so that make and processing, the upper end of sleeve 10 has stomidium 107, and the lower end of sleeve 10 has diapire 101, and diapire 101 is provided with bottom through hole 109.
As depicted in figs. 1 and 2, pull bar 70 wears out said sleeve 10, and is as shown in Figure 3, and pull bar 70 is from the inner chamber of stomidium 107 entering sleeves 10, and through hole 109 passes from the bottom.
As depicted in figs. 1 and 2, card-bit part 90 is connected said pull bar 70 and is positioned at outside the said sleeve 10, and like Fig. 8 and shown in Figure 9, said card-bit part 70 has the thrust end 9051 that blocks the well head inwall.
As depicted in figs. 1 and 2, the side of said pull bar has alignment pin 703, and the bearing of trend of alignment pin 703 is the axis of pull bar 70 vertically.The inside wall of said sleeve 10 have hold circumferential slot 105 that said alignment pin circumferentially rotates and said circumferential slot with pull bar on have axially extended location indentations 103 on the rightabout side of card-bit part, 103 pairs of alignment pins of said location indentations, 703 location also are communicated with said circumferential slot 105.Through depressing elastic device, can the alignment pin on the pull bar 703 be moved down into from location indentations 103 in the circumferential slot 105, then through the rotation of alignment pin 703 in circumferential slot 105, pull bar 70 drives card-bit part 90 and rotates.
Like Fig. 5 and shown in Figure 6, said blocking device also can comprise: the rotating inner core 30 that is sheathed in the said sleeve 10; Said pull bar 70 can axially movable wear out the inner chamber of said inner core 30; The external surface of said inner core 30 is provided with and holds said alignment pin 703 axially movable inner core open slots 303; Said inner core open slot 303 is communicated with the inner chamber of said inner core, and said location indentations 103 is interconnected with said inner core open slot 303 respectively with said circumferential slot 105.Inner core the difficulty that has increased rotating tension bar is set, be of value to antitheft.
Extremely shown in Figure 7 like Fig. 4; The top of said inner core has axially extended top through hole 301; Said top through hole is circumferentially located the top 701 of said pull bar, and said top through hole 301 is communicated with the top 701 axially movable passages that form said pull bar with the inner chamber of said inner core, and 303 pairs of said alignment pins 703 of said inner core open slot are circumferentially located; The bottom of said pull bar passes said inner core and said sleeve, and said card-bit part 90 is connected the bottom of said pull bar 70.After making that like this top 701 of pull bar axially moves down into the inner chamber of inner core from the top through hole 301 of inner core, alignment pin 703 drives inner cores 30 and rotates together, the conversion of realization card-bit part 90 positions.
To shown in Figure 6, the top 701 of said pull bar is a cuboid like Fig. 4, and said top through hole 301 is a rectangular through holes, so that the two is circumferentially located each other.At the locking state of said blocking device, like Fig. 1 and Fig. 5, the top 701 of said pull bar is arranged in said top through hole 301; Said alignment pin 703 passes said inner core open slot and is arranged in said location indentations 103; At this moment, like Figure 10 and shown in Figure 12, said thrust end blocks the inwall of well head; Released state at said blocking device; Like Fig. 2 and Fig. 6; The top of said pull bar is arranged in the inner chamber of said inner core, and said alignment pin 703 passes said inner core open slot 303 and is arranged in said circumferential slot 105, at this moment; Like Figure 11 and shown in Figure 13, said thrust end departs from out the inwall of said well head.Said elastic device is pressed between the diapire of the face that compresses and said sleeve of said pull bar, so that alignment pin 703 has the trend in location indentations of being positioned 103, to guarantee the stable of locking state.
To shown in Figure 13, said blocking device also comprises like Fig. 1, Fig. 2, Fig. 5, Fig. 6 and Figure 10: the holder 50 of clamping well lid 20, removable being set on the said sleeve 10 is so that according to the thickness adjustment of well lid and being connected of well lid.The external surface of said sleeve has screw thread, and said holder 50 is two collars with internal thread, and said two collars are screwed onto respectively on the said sleeve 10, and the spacing of said two collars 50 equals the thickness of said well lid 20.Be convenient to like this adjust, be convenient to the well lid of clamping different-thickness, also be convenient to the setting of the collar.In order to prevent that the collar from moving out from sleeve 10, the top of sleeve 10 is provided with boss, and the diameter of boss is greater than the externally threaded diameter on the sleeve 10.
Like Fig. 9 and shown in Figure 10; Said card-bit part 90 comprises: the connecting portion 901 that is connected with said pull bar 70; Said connecting portion 901 for example is block, has the connecting hole 903 that is connected with the bottom of said pull bar 70 in the connecting portion 901, and said card-bit part 90 also comprises: the grab 905 that is connected said connecting portion 901 side direction; Said grab 905 is bent upwards, and said thrust end 9051 is positioned at the end of said grab 905.Grab 905 is bent upwards, and helps increasing elastic force and frictional force between the inwall of grab and well head, helps blocking the inwall 401 of well head.The distance dependent of the inwall of the length of grab 905 and pull bar and well head during making, can be made the grab of different length; In different well head 40; Certainly, grab is the straight inwall 401 that also can block well head, but the chucking degree not as grab be bent upwards effective.
Like Fig. 8 and shown in Figure 9; Said connecting portion 901 is a cuboid so that make, and said connecting hole 903 is a long slot bore, and the bottom of said pull bar 70 movably is arranged in the said long slot bore 903; Can adjust the distance between the inwall 401 of thrust end 9051 and well head like this, to guarantee chucking.To shown in Figure 13, the bottom of said pull bar 70 has external screw thread like Fig. 1, Fig. 2 and Figure 10, and said connecting portion 903 is fixed on the bottom of said pull bar 70 through two nuts 80.Can change and adjust card-bit part 90 easily like this.Two said nuts 80 are screwed onto respectively on the said pull bar 70, and said connecting portion 903 is folded between said two nuts 80.Like this, also be convenient to according to the distance between the inwall 401 of well head situation adjustment thrust end 9051 and well head.
Extremely shown in Figure 6 like Fig. 1, Fig. 2 and Fig. 5; Said alignment pin 703 is cylindrical; Be arranged on the side direction of said pull bar and be positioned under the top of said pull bar 701, said inner core open slot 303 is long trough with circumferential slot 105 on the sleeve, and bearing of trend is vertical each other.Said inner core open slot extends axially along said inner core, and said circumferential slot circumferentially extends along said urceolus, and inner core open slot 303 is vertical long trough, and circumferential slot 105 is the curve form of the level long trough identical with the curve form of sleeve, so that processing.Said location indentations 103 is groove or hole, and said location indentations 103 is communicated with said circumferential slot 105, to realize the conversion of alignment pin 703 positions.Location indentations 103 can be opened to the external surface of sleeve 10 with circumferential slot 105, so that observe the locking situation.
Figure 10 to Figure 13 shows the inwall 401 of straight-cylindrical well head respectively, and the inwall 401 with well head of step.Shown in figure, the utility model also proposes a kind of well lid 20, and said well lid 20 has installing hole, and sleeve 10 passes said installing hole and is connected with said well lid 20.For example, sleeve 10 passes said installing hole, and two collar shape holders 50 on the sleeve 10 are clamped well lid 20.This well lid with blocking device also can block various well heads 40 certainly, can guard against theft, and prevents arbitrarily to be opened.The diameter of sleeve 10 will be considered the diameter of well lid, can not be too big in order to avoid well lid is too heavy, and the diameter of sleeve 10 also will be considered the diameter of inner core 30 and pull bar, so can not be too little.Take all factors into consideration, for common well lid, the diameter of sleeve 10 (external screw thread place) for example is 30 to 50mm.The spring that compresses pull bar will have the stronger coefficient of stiffiness, in order to avoid pull bar is depressed easily, inner core is rotated easily.Usually; The elasticity of spring is depressed spanner etc. and is depressed instrument and just can depress pull bar through pound bump with hammer with the needs man; Make the alignment pin 703 of pull bar move to the circumferential slot 105 to rotate and be normative reference, be opened further to prevent well lid from location indentations 103.
Operating principle and the process of depressing the utility model are described below: on pull bar 70, put into spring housing in the inner core 30; Alignment pin 703 is installed in the inner core open slot 303, then pull bar 70 and inner core 30 is packed in the sleeve 10, guarantee that inner core open slot 303 is communicated with location indentations 103 and circumferential slot 105; Promptly make alignment pin 703 be arranged in location indentations 103 or circumferential slot 105; For example, when pull bar was in locking state, alignment pin 703 was arranged in location indentations 103; Pull bar is in released state, and alignment pin 703 is arranged in circumferential slot 105.Card-bit part 90 can be installed on the pull bar after blocking device and well lid connect, and also can before well lid connects, be installed on the pull bar.
When pull bar was in locking state, alignment pin 703 was arranged in location indentations 103, and grab blocks the inwall 401 of well head; At this moment, under the effect of the elastic force that makes progress of spring, alignment pin 703 can stable being positioned in the location indentations 103; Even pull bar is applied downward pressure; As long as can not overcome the elastic force of spring, alignment pin 703 is moved in the circumferential slot 105, thereby keep the stable of locking.When needing to remove locking, can use the briquetting or the spanner of the cuboid of tube inner chamber in can being deep into from the top through hole 301 of inner core, through pounding dynamic pressure piece or spanner downwards with hammer; Top through hole 301 is shifted out 701 times in the top that makes briquetting or spanner head on pull bar, thereby pull bar integral body is moved down, thereby alignment pin 703 moves in the circumferential slot 105; At this moment; The briquetting of cuboid or spanner are arranged in the top through hole 301 of inner core, and the briquetting that rotates cuboid just makes inner core 30 rotate, because the 303 pairs of alignment pins 703 of inner core open slot on the inner core 30 are circumferentially located; So inner core and pull bar rotate relative to sleeve 10 jointly; Thereby the card-bit part on the pull bar also rotates, thereby departs from the inwall 401 of well head, realizes that finally pull bar is in locking state.
The utility model is applicable to various well head inwalls, and no matter whether the well head inwall has step, and the utility model can be realized chucking.The utility model is because the elasticity of spring and the structure that grab is bent upwards make that the chucking effect is better, antitheft more.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.For each ingredient of the utility model can make up under the condition of not conflicting each other; Any those skilled in the art; Equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. a blocking device is characterized in that, said blocking device comprises:
Sleeve;
Pull bar wears out said sleeve;
Card-bit part is connected on the said pull bar and is positioned at outside the said sleeve, and said card-bit part has the thrust end that blocks the well head inwall;
Elastic device, this elastic device elasticity is pressed between said sleeve and the said pull bar, and along said sleeve axially towards with pull bar on the opposite said pull bar of direction pushing tow of card-bit part;
The side of said pull bar has alignment pin, the inside wall of said sleeve have hold circumferential slot that said alignment pin circumferentially rotates and said circumferential slot with pull bar on have axially extended location indentations on the rightabout side of card-bit part.
2. blocking device as claimed in claim 1 is characterized in that, said blocking device also comprises: the rotating inner core that is sheathed in the said sleeve; Said pull bar can axially movable wear out the inner chamber of said inner core; The external surface of said inner core is provided with and holds the axially movable inner core open slot of said alignment pin; Said inner core open slot is communicated with the inner chamber of said inner core, and said location indentations and said circumferential slot are interconnected with said inner core open slot respectively.
3. blocking device as claimed in claim 2; It is characterized in that the top of said inner core has axially extended top through hole, said top through hole is circumferentially located the top of said pull bar; Said top through hole is communicated with the axially movable passage in the top that forms said pull bar with the inner chamber of said inner core; Said inner core open slot is circumferentially located said alignment pin, and the bottom of said pull bar passes said inner core and said sleeve, and said card-bit part is connected the bottom of said pull bar.
4. blocking device as claimed in claim 3; It is characterized in that the top of said pull bar is a cuboid, said top through hole is a rectangular through holes; Locking state at said blocking device; The top of said pull bar is arranged in said top through hole, and said alignment pin passes said inner core open slot and is arranged in said location indentations, and said thrust end blocks the inwall of well head; At the released state of said blocking device, the top of said pull bar is arranged in the inner chamber of said inner core, and said alignment pin passes said inner core open slot and is arranged in said circumferential slot, and said thrust end departs from out the inwall of said well head.
5. blocking device as claimed in claim 1; It is characterized in that; Said sleeve has diapire and the bottom through hole that passes said diapire; Said elastic device is a spring, and said pull bar has the face that compresses that compresses said elastic device, and said elastic device is pressed between the diapire of the face that compresses and said sleeve of said pull bar.
6. blocking device as claimed in claim 1; It is characterized in that the external surface of said sleeve has screw thread, said blocking device also comprises: the holder of clamping well lid; Removable being set on the said sleeve; Said holder is two collars with internal thread, and said two collars are screwed onto respectively on the said sleeve, and the spacing of said two collars equals the thickness of said well lid.
7. blocking device as claimed in claim 1; It is characterized in that; Said card-bit part comprises: with the connecting portion that said pull bar is connected, have the connecting hole that is connected with the bottom of said pull bar in the said connecting portion, said card-bit part also comprises: the grab that is connected said connecting portion side direction; Said grab is bent upwards, and said thrust end is positioned at the end of said grab.
8. blocking device as claimed in claim 7; It is characterized in that said connecting portion is a cuboid, said connecting hole is a long slot bore; The bottom of said pull bar movably is arranged in the said long slot bore; The bottom of said pull bar has external screw thread, and two nuts are screwed onto the bottom of said pull bar respectively, and said connecting portion is folded between said two nuts.
9. blocking device as claimed in claim 4 is characterized in that, said alignment pin is cylindrical; Be arranged on the side direction of said pull bar and be positioned under the top of said pull bar; Said inner core open slot and said circumferential slot are long trough, and said inner core open slot extends axially along said inner core, and said circumferential slot circumferentially extends along said urceolus; Said location indentations is groove or hole, and said location indentations and said circumferential slot are communicated with.
10. a well lid is characterized in that, said well lid has installing hole, passes said installing hole and is connected with said well lid like each described sleeve in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120372324XU CN202347953U (en) | 2011-09-27 | 2011-09-27 | Locking device and well cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120372324XU CN202347953U (en) | 2011-09-27 | 2011-09-27 | Locking device and well cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202347953U true CN202347953U (en) | 2012-07-25 |
Family
ID=46536965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120372324XU Expired - Lifetime CN202347953U (en) | 2011-09-27 | 2011-09-27 | Locking device and well cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202347953U (en) |
-
2011
- 2011-09-27 CN CN201120372324XU patent/CN202347953U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3069827A1 (en) | Clamping device for stretching a threaded bolt | |
| US4769890A (en) | Hub and bearing puller and press drive | |
| CN106981773B (en) | Rectangular connector and its plug | |
| CN207027391U (en) | A kind of removal tool of electrical machinery theft-proof bolt | |
| US6840024B2 (en) | Device for rapid engagement/release of units for fitting lids to containers | |
| CN202347953U (en) | Locking device and well cover | |
| JP2014514160A (en) | Press machine with improved maintainability | |
| CN203929470U (en) | A kind of safety-type marshal piece stripper | |
| CN202518940U (en) | Tool special for lifting | |
| CN2923199Y (en) | Multifunction flow-nipple sleeve tube | |
| CN202048067U (en) | Anti-falling cylindrical pin | |
| CN102721019A (en) | Positioning and rotation-proof structure of lifting rod | |
| CN204093589U (en) | Centrifuge drive unit | |
| CN102175123A (en) | Hole positioning tensioning device | |
| CN105150237B (en) | Connecting device | |
| CN104214337B (en) | Container positive/negative-pressure locking device | |
| CN207033955U (en) | A kind of tripper of electrical machinery theft-proof bolt | |
| JP5683258B2 (en) | Spindle attachment device | |
| US20040115025A1 (en) | Method for the application of a function element to a mouldable metal piece using a high pressure moulding process, assembled piece and die | |
| CN104358813B (en) | A kind of pressure mounting of the spring component and the spring assembly using the press-loading apparatus | |
| CN106877236A (en) | Fast and reliable safety-type grounding wire clamp apparatus | |
| CN109025967B (en) | Portable anti-drop, quick-release and anti-blowout pipe device | |
| CN114012658B (en) | Sealing ring taking-out device | |
| CN206180485U (en) | Formula of circling round preformed armor rods puller | |
| CN204041986U (en) | Stable type container locking apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |