CN201991873U - Telescoping mechanism and engineering equipment comprising same - Google Patents
Telescoping mechanism and engineering equipment comprising same Download PDFInfo
- Publication number
- CN201991873U CN201991873U CN2011200101199U CN201120010119U CN201991873U CN 201991873 U CN201991873 U CN 201991873U CN 2011200101199 U CN2011200101199 U CN 2011200101199U CN 201120010119 U CN201120010119 U CN 201120010119U CN 201991873 U CN201991873 U CN 201991873U
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- telescoping member
- hydraulic cylinder
- oil hydraulic
- bearing pin
- extending means
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Abstract
The utility model relates to the field of engineering equipment, in particular to a telescoping mechanism for supporting engineering equipment and the engineering equipment comprising the telescoping mechanism. The utility model provides the telescoping mechanism and the engineering equipment. The telescoping mechanism comprises a mounting member and at least one telescoping member, and the telescoping member is connected with a first hydraulic cylinder through a pin shaft connecting device; and the pin shaft connecting device comprises a telescoping member connecting part arranged at the inner side of the at least one telescoping member and a hydraulic cylinder connecting part arranged on the first hydraulic cylinder. The telescoping member connecting part is connected with the hydraulic cylinder connecting part through a connecting pin shaft, and the hydraulic cylinder connecting part is connected onto the inner side of the telescoping member connecting part; a dismounting space for dismounting the connecting pin shaft is arranged at the inner side of the hydraulic cylinder connecting part, and the width of the dismounting space is greater than or equal to the length of the connecting pin shaft. Due to the telescoping mechanism, the connecting pin shaft can be dismounted and a seal part of an oil cylinder can be replaced without extracting the telescoping member.
Description
Technical field
The utility model relates to the engineering equipment field, is specifically related to be used at the extending means of operation propping works equipment and comprises the engineering equipment of this extending means.
Background technique
Often need use multi-stage expansion mechanism to come heavy equipment at the operation transport field, so that in operation process, obtain good operational stability and Security.Hoist, concrete mixer etc. are engineer operation field jumboes commonly used, and they all need to use necessary extending means that car body is supported in operation process.For example for concrete mixer, it is through years development, the jib length of pump truck has been more and more longer development trend, because the increase of pumping vehicle arm rack length, for guaranteeing the stability of car load, need to enlarge the stable support region area of car load, so also will correspondingly increase the length of supporting leg, but because the restriction of pump truck aspect the car load overall width, make the secondary telescopic outrigger that in the past often adopted can not satisfy the requirement of a leg length, therefore exigence adopts three grades of telescopic outriggers, promptly on the basis of original secondary telescopic outrigger, increases the one-level Retractive leg again and makes it satisfy the requirement of a leg length aspect.
Telescopic outrigger adopts the mode of Driven by Hydraulic Cylinder more, and in the inner space of telescopic outrigger, the cylinder barrel of the oil hydraulic cylinder that is used to drive is connected with telescopic outriggers at different levels by bearing pin respectively with piston rod.Owing to be to adopt oil hydraulic cylinder to connect,, when changing oil hydraulic cylinder, must remove the bearing pin that connects hydraulic cylinder piston rod and telescopic outrigger so often need change to the Sealing of oil hydraulic cylinder.
But,, therefore, under the condition of not doing special processing, after will extracting mutually nested box-structure telescopic outrigger fully out, could remove bearing pin, and then change oil hydraulic cylinder because telescopic outriggers at different levels is complete whole plate box-structure.It is big to adopt this method to change the workload of bearing pin, and the needed time is long, and needs special lifting device, and the maintenance work difficulty is big.And, at present in mutually nested box-structure, remove bearing pin, also need perforate on the structural walls of the telescopic outrigger that is nested in the whole plate structure of outer field box, so that bearing pin in axial direction takes out.This perforate on the wall of the whole plate of telescopic outrigger box, thereby the major defect of removing the scheme of bearing pin is: after the whole plate structure of box is carried out perforate, it is stressed to increase sheet material greatly at tapping, simultaneously be unfavorable for that also the flexing of box-structure is stressed, thereby after perforate, need tapping is carried out local reinforcement processing, but owing to also have many other component to need to arrange in the gap of nested box-structure side direction, so be difficult to tapping is well strengthened.
The model utility content
The purpose of this utility model provides a kind of new extending means and the engineering equipment that comprises it, this extending means adopts novel bearing pin Placement, this device can be in the nested space of less box supporting leg, by appropriate design and the layout that bearing pin is installed, be implemented under the condition of not extracting telescoping member out, remove and connect bearing pin, the Sealing of replacing oil cylinder.
At above-mentioned purpose, provide a kind of extending means according to first aspect of the present utility model, wherein, extending means comprises the installation component that is connected to supported equipment and is socketed at least one telescoping member of installation component, at least one telescoping member links to each other with first oil hydraulic cylinder by the bearing pin connection set, wherein the bearing pin connection set comprises: the telescoping member joint is arranged at least one telescoping member inboard; The oil hydraulic cylinder joint is arranged on first oil hydraulic cylinder; And connection bearing pin; Wherein, the telescoping member joint links to each other with the oil hydraulic cylinder joint by connecting bearing pin, and the oil hydraulic cylinder joint is connected telescoping member joint inboard; Oil hydraulic cylinder joint inboard is provided with and is used for the dismounting space that dismounting connects bearing pin, and the width in dismounting space is more than or equal to the length that connects bearing pin.
Further, according to the extending means of first aspect of the utility model, wherein, a pair of telescoping member joint is positioned at the both sides through the pivotal axis plane of the longitudinal axis of first oil hydraulic cylinder; The pair of hydraulic cylinders joint is formed on the cylinder barrel of first oil hydraulic cylinder, and is positioned at the both sides on pivotal axis plane; And wherein, the dismounting space is formed between the pair of hydraulic cylinders joint.
Further, according to the extending means of first aspect of the utility model, wherein, the bearing pin connection set comprises respectively that in the both sides on pivotal axis plane at least one connects bearing pin.
Further, according to the extending means of first aspect of the utility model, wherein, be provided with the positioning device that is used for fixing the connecting pin axle position in the dismounting space, positioning device places between the connection bearing pin of both sides, pivotal axis plane, and the end of the bearing pin that is connected.
Further, according to the extending means of first aspect of the utility model, wherein, positioning device comprises and is placed in the dismounting space and the pressing plate of the end of the bearing pin that is connected and the fastening screw trip bolt that pressing plate is fixed to first oil hydraulic cylinder.
Further, according to the extending means of first aspect of the utility model, wherein, the end place that the connection bearing pin exposes to the dismounting space is formed with bump.
Further, extending means according to first aspect of the utility model, wherein, at least one telescoping member comprises the first order telescoping member that is socketed on installation component and is socketed on the second level telescoping member of first order telescoping member that second level telescoping member links to each other with first order telescoping member by first oil hydraulic cylinder.
Further, according to the extending means of first aspect of the utility model, wherein, second level telescoping member links to each other with the cylinder barrel of first oil hydraulic cylinder by the bearing pin connection set, and first order telescoping member links to each other with the piston rod of first oil hydraulic cylinder; Perhaps, first order telescoping member links to each other with the cylinder barrel of first oil hydraulic cylinder by the bearing pin connection set, and second level telescoping member links to each other with the piston rod of first oil hydraulic cylinder.
Further, according to the extending means of first aspect of the utility model, wherein, at least one telescoping member also comprises the third level telescoping member that is socketed on second level telescoping member, and third level telescoping member links to each other with second level telescoping member by second oil hydraulic cylinder.
Further, according to the extending means of first aspect of the utility model, wherein, first oil hydraulic cylinder and second oil hydraulic cylinder are oppositely installed each other, the cylinder barrel of the cylinder barrel of second oil hydraulic cylinder and first oil hydraulic cylinder is fixed together, and the piston rod of second oil hydraulic cylinder is connected in third level telescoping member.
Provide a kind of engineering equipment according to second aspect of the present utility model, it comprises the multi-stage expansion mechanism according to first aspect present invention, and above-mentioned multi-stage expansion mechanism is installed on the underframe of engineering equipment.
Further, the engineering equipment according to the utility model second aspect can be heavy duty equipments such as hoist, concrete mixer.
Extending means of the present utility model has following technique effect:
Extending means of the present utility model adopts novel bearing pin Placement, this device can carry out the dismounting operation in the nested interior volume of less box supporting leg, go out the dismounting space by design structure, thereby make that connecting bearing pin can carry out dismounting in telescoping member inside, need not telescoping member is split out the oil hydraulic cylinder that promptly detachably is attached thereto, and avoided on the wall of telescoping member, offering opening.Thus, not only can under the condition of not extracting telescoping member out, remove the connection bearing pin easily, and then change the Sealing of oil cylinder, and the telescoping member intensity of having avoided causing owing to perforate reduces.
Should be appreciated that above generality is described and the following detailed description is all enumerated and illustrative, purpose is in order to provide further instruction to claimed the utility model.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the utility model.These accompanying drawings illustrate embodiments more of the present utility model, and are used for illustrating principle of the present utility model with specification.Identical in the accompanying drawings parts are represented with identical label.In the accompanying drawing:
Fig. 1 shows the overall structure schematic representation according to multi-stage expansion mechanism of the present utility model, wherein shows multi-stage expansion mechanism and is in the state that full extension is opened;
Fig. 2 shows another overall structure schematic representation according to multi-stage expansion mechanism of the present utility model, wherein shows multi-stage expansion mechanism and is in the state of regaining fully; And
Fig. 3 shows the sectional view of P-P along the line among Fig. 2, wherein shows the bearing pin Placement that adopts according to multi-stage expansion mechanism of the present utility model.
Embodiment
Below, with reference to the accompanying drawings and in conjunction with specific embodiments mode of execution of the present utility model is described.
At first, wherein show extending means, be used at serviceability propping works equipment according to an embodiment of the utility model with reference to Fig. 1.Extending means shown in Fig. 1 is three grades of extending meanss, (for example promptly comprise three telescoping member, telescopic outrigger), these three grades of extending meanss comprise the installation component 1 and three telescoping member that are connected in installation component 1 of the underframe (not shown) that is connected to engineering equipment.Particularly, as shown in Figure 1, above-mentioned three telescoping member comprise the first order telescoping member 2 that is socketed on installation component 1, the second level telescoping member 3 that is socketed on first order telescoping member 2 and the third level telescoping member 4 that is socketed on second level telescoping member 3.
Further, as shown in Figure 2, the second level telescoping member 3 in three grades of extending meanss of the present utility model links to each other with first oil hydraulic cylinder 9 by the bearing pin connection set.First oil hydraulic cylinder 9 is used to drive second level telescoping member 3.Carry out dismounting in order to be implemented in telescoping member inside, make to need not telescoping member is disassembled the promptly detachable oil hydraulic cylinder that is attached thereto down that the utility model provides a kind of like this telescoping member, wherein is provided with such bearing pin connection set.Particularly, this bearing pin connection set comprises: be arranged on the inboard telescoping member joint 31 of telescoping member (for example can be the second level telescoping member 3 shown in the figure); And be arranged on oil hydraulic cylinder joint 91 on the oil hydraulic cylinder (for example first oil hydraulic cylinder 9 shown in the figure) that is used to drive this telescoping member; And connection bearing pin 12; Wherein, telescoping member joint 31 links to each other with oil hydraulic cylinder joint 91 by connecting bearing pin 12, and oil hydraulic cylinder joint 91 is connected telescoping member joint 31 inboards; And the inboard of oil hydraulic cylinder joint 91 is formed with and is used for the dismounting space 18 that dismounting connects bearing pin 12, and the width L in dismounting space 18 is more than or equal to the length D that connects bearing pin 12.Need to prove that above-mentioned term " inboard " is for the external environment condition of whole extending means.
By above-mentioned bearing pin connection set, the telescoping member joint 31 by being arranged on second telescoping member, 3 inboards, be arranged on the oil hydraulic cylinder joint 91 on first oil hydraulic cylinder 9 and connect bearing pin 12, realize being connected of second telescoping member 3 and first oil hydraulic cylinder 9.Oil hydraulic cylinder joint 91 is connected telescoping member joint 31 inboards, and oil hydraulic cylinder joint 91 inboards are provided with dismounting space 18, therefore can insert or take out connection bearing pin 12 from this dismounting space 18, thereby be implemented in the dismounting of second telescoping member, 3 inside, need not to remove second telescoping member 3 can pull down first oil hydraulic cylinder 9.And this dismounting mode of the present utility model need not to punch on the telescoping member again, avoids reducing owing to opening causes telescoping member intensity.
Particularly, with existing on the wallboard of telescoping member perforate compare with the scheme of taking out bearing pin, extending means of the present utility model mainly contains following advantage: connection bearing pin 1. of the present utility model has adopted the dismounting mode of interior modus ponens, be formed with on telescoping member and the oil hydraulic cylinder and get the joint that the mode dismounting is connected bearing pin 12 in being used for specially using, avoided thus since on structural walls perforate to the weakening of telescoping member; 2. and need not extra reinforced structure, can not strengthen increasing lateral space demand because of structure to telescoping member; 3. when changeing connection bearing pin and Sealing, can directly split out bearing pin, the telescoping member that oil hydraulic cylinder will be housed is extracted out fully, makes the replacing of hydraulic cylinder sealing element simple; 4. owing to need not to extract out telescoping member, thereby do not need special lifting device, compare with the scheme of prior art, maintenance time saves time more than 70%.
Especially, in mode of execution shown in Figure 3, above-mentioned bearing pin connection set can followingly be constructed, and it comprises: a pair of telescoping member joint 31, and it is formed on the inboard of second level telescoping member 3, and is positioned at the both sides of the longitudinal axis A of first oil hydraulic cylinder 9; Pair of hydraulic cylinders joint 91, it is formed on the cylinder barrel 9b of first oil hydraulic cylinder 9, and is positioned at the both sides of longitudinal axis A.This moment, 18 in dismounting space was formed between the pair of hydraulic cylinders joint 91 accordingly.The a pair of telescoping member joint 31 and the pair of hydraulic cylinders joint 91 that are oppositely arranged have been shown in the mode of execution of Fig. 3, certainly, the telescoping member joint 31 and the oil hydraulic cylinder joint 91 of more number more or lesser number can be set as required, as long as guarantee stable connection.
By the bearing pin connection set in the above-mentioned mode of execution, second level telescoping member 3 is fixed together by the cylinder barrel that the interior modus ponens that easily changes connects the bearing pin 12 and first oil hydraulic cylinder 9 at telescoping member joint 31 places of both sides.For second level telescoping member 3, wherein telescoping member joint 31 can be formed on the root of second level telescoping member 3, promptly is contained in the part in the first order telescoping member 2 all the time.Owing to adopted the connection bearing pin 12 of interior modus ponens, and between oil hydraulic cylinder joint 91, provide and be used for the dismounting space 18 that dismounting connects bearing pin, therefore, when needs are changed first oil hydraulic cylinder 9, just do not need to use external force takes out second level telescoping member 3 from first order telescoping member 2 after, could dismantle oil hydraulic cylinder.In the utility model, when needs are pulled down first oil hydraulic cylinder 9, will connect bearing pin 12 and from pin shaft hole, be retracted in the dismounting space 18, directly 18 taking-ups connect bearing pin 12 from the dismounting space, can pull down first oil hydraulic cylinder 9.
Further, according to the utility model, above-mentioned bearing pin connection set comprises respectively that in the both sides of the longitudinal axis A of first oil hydraulic cylinder 9 at least one connects bearing pin 12.Can be according to installation requirement, each side uses two or more to connect bearing pin, and when using more multi-link bearing pin, the above-mentioned telescoping member joint 31 and the concrete structure of oil hydraulic cylinder joint 91 and size also need to adjust accordingly.Those skilled in the art can use according to reality and design, and have just repeated no more at this.
Further, as shown in Figure 3, be provided with the positioning device that is used for fixing connection bearing pin 12 positions in the dismounting space 18 of bearing pin connection set of the present utility model, this positioning device places between the connection bearing pin 12 of longitudinal axis A both sides, and the end of the bearing pin 12 that is connected.Particularly, positioning device can be constructed as follows.In one embodiment, positioning device can comprise and being placed in the dismounting space 18 and against the pressing plate 16 of the end of the connection bearing pin 12 of both sides, and the fastening screw trip bolt 17 that pressing plate 16 is fixed to first oil hydraulic cylinder 9.Perhaps, in other embodiments, positioning device can directly adopt the mode of a positioning block, and this positioning block is installed in the dismounting space 18, can realize equally connecting the location of bearing pin 12.
In the embodiment shown in fig. 3, when connection bearing pin 12 is installed, pin shaft hole in the telescoping member joint 31 is aimed at the pin shaft hole in the oil hydraulic cylinder joint 91, put into connection bearing pin 12 from dismounting space 18, and then will connect bearing pin 12 and push in the pin shaft hole, each bearing pin of packing into is successively finished being connected of second telescoping member 3 and first oil hydraulic cylinder 9 thus.When changeing first oil hydraulic cylinder 9, unclamp two fastening screw trip bolts 17, take out pressing plate 16, to connect bearing pin 12 moves in dismounting space 18, from pin shaft hole, shift out fully when connecting bearing pin 12, just can from dismounting space 18, take out, thus, promptly can finish the dismounting of first oil hydraulic cylinder 9 connecting bearing pin 12.By above-mentioned mode, make the replacing of first oil hydraulic cylinder 9 become faster, easier.
Further preferably, for the ease of connecting the dismounting of bearing pin 12, be formed with bump 12a at the place, end that exposes to dismounting space 18 that connects bearing pin 12, as shown in Figure 3.By this bump 12a, when dismounting, can clamp connection bearing pin 12 easily, withdraw from from pin shaft hole thereby will connect bearing pin 12 easily.Bump 12a is not limited to the form shown in Fig. 3, and under the situation of space permission, it also can directly protrude from the end face that connects bearing pin 12.
In illustrated embodiment, the cylinder barrel 9b of first oil hydraulic cylinder 9 links to each other with second level telescoping member 3 by above-mentioned bearing pin connection set, meanwhile, the piston rod 9a of first oil hydraulic cylinder 9 is fixed together by bearing pin 11 and first order telescoping member 2, as shown in Figure 2.In other embodiment, also can be that first order telescoping member 2 links to each other with the cylinder barrel 9b of first oil hydraulic cylinder 9 by the bearing pin connection set, telescoping member 3 piston rod 9a with first oil hydraulic cylinder 9 in the second level link to each other.
Simultaneously, in illustrated three grades of extending meanss, the third level telescoping member 4 that is socketed on second level telescoping member 3 links to each other with second level telescoping member 3 by second oil hydraulic cylinder 10, and second oil hydraulic cylinder 10 is used to drive third level telescoping member 4.Particularly, first oil hydraulic cylinder 9 and second oil hydraulic cylinder 10 are oppositely installed each other, and wherein the cylinder barrel 9b of the cylinder barrel 10b of second oil hydraulic cylinder 10 and first oil hydraulic cylinder 9 is fixed together, and the piston rod 10a of second oil hydraulic cylinder 10 is connected in third level telescoping member 4.
Need to prove that three grades of top telescoping member are exemplary, only is for mode of execution of the present utility model is described.In fact, extending means of the present utility model can include only a telescoping member, two telescoping member, perhaps comprises the telescoping member more than three, promptly can be one-level, secondary telescoping member, perhaps level Four, Pyatyi even more multistage telescoping member.The quantity of the telescoping member that extending means is included does not limit the utility model, can adopt the extending means of any number of stages according to the practical application needs.For the extending means of different progression, all can adopt above-mentioned bearing pin connection set to connect telescoping member and corresponding driving oil hydraulic cylinder, these variant according to principle of the present utility model all belong to protection domain of the present utility model.
In addition, for the extending means of the present utility model shown in the figure, first order telescoping member 2 wherein links to each other with installation component 1 by chain transmission, and chain transmission can drive first order telescoping member 2 and carry out fore and aft motion with respect to installation component 1 under the driving of motor (not shown).Simultaneously, as shown in fig. 1, multi-stage expansion mechanism of the present invention also comprises vertical support oil hydraulic cylinder 15, it is arranged in third level telescoping member 4 belows, being used for state lower support extending means, can carry out accommodation to the height of extending means according to the state of ground of operation site simultaneously in the extending means evolutionary operation.
According to principle of the present utility model, a kind of engineering equipment also is provided, it comprises above-mentioned according to extending means of the present utility model, extending means is mounted to the underframe of engineering equipment.Above-mentioned engineering equipment can be hoist, concrete mixer etc.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. extending means, it is characterized in that, described extending means comprises installation component (1) that is connected to supported equipment and at least one telescoping member (3) that is socketed on described installation component (1), described at least one telescoping member (3) links to each other with first oil hydraulic cylinder (9) by the bearing pin connection set, and wherein said bearing pin connection set comprises:
Telescoping member joint (31) is arranged on described at least one telescoping member (3) inboard;
Oil hydraulic cylinder joint (91) is arranged on described first oil hydraulic cylinder (9); And
Connect bearing pin (12);
Wherein, described telescoping member joint (31) links to each other with described oil hydraulic cylinder joint (91) by described connection bearing pin (12), and described oil hydraulic cylinder joint (91) is connected described telescoping member joint (31) inboard;
Described oil hydraulic cylinder joint (91) inboard is provided with the dismounting space (18) that is used for the described connection bearing pin of dismounting (12), and the width (L) in described dismounting space (18) is more than or equal to the length (D) of described connection bearing pin (12).
2. extending means according to claim 1 is characterized in that, described bearing pin connection set comprises:
A pair of described telescoping member joint (31) is positioned at the both sides on pivotal axis plane through the longitudinal axis (A) of described first oil hydraulic cylinder (9);
Pair of hydraulic cylinders joint (91) is formed on the cylinder barrel (9b) of described first oil hydraulic cylinder (9), and is positioned at the both sides on described pivotal axis plane;
Wherein, described dismounting space (18) is formed between the described a pair of described oil hydraulic cylinder joint (91).
3. extending means according to claim 2, it is characterized in that, be provided with the positioning device that is used for fixing described connection bearing pin (12) position in the described dismounting space (18), described positioning device places between the described connection bearing pin (12) of both sides, described pivotal axis plane, and against the end of described connection bearing pin (12).
4. extending means according to claim 3, it is characterized in that described positioning device comprises and being placed in the described dismounting space (18) and against the pressing plate (16) of the end of described connection bearing pin (12) and the fastening screw trip bolt (17) that described pressing plate (16) is fixed to described first oil hydraulic cylinder (9).
5. extending means according to claim 1 is characterized in that, the end place that described connection bearing pin (12) exposes to described dismounting space (18) is formed with bump (12a).
6. according to each described extending means in the claim 1 to 5, it is characterized in that, described at least one telescoping member comprises first order telescoping member (2) that is socketed on described installation component (1) and the second level telescoping member (3) that is socketed on described first order telescoping member (2), and described second level telescoping member (3) links to each other with described first order telescoping member (2) by described first oil hydraulic cylinder (9).
7. extending means according to claim 6 is characterized in that,
Described second level telescoping member (3) links to each other with the cylinder barrel (9b) of described first oil hydraulic cylinder (9) by described bearing pin connection set, and described first order telescoping member (2) links to each other with the piston rod (9a) of described first oil hydraulic cylinder (9); Perhaps
Described first order telescoping member (2) links to each other with the cylinder barrel (9b) of described first oil hydraulic cylinder (9) by described bearing pin connection set, and described second level telescoping member (3) links to each other with the piston rod (9a) of described first oil hydraulic cylinder (9).
8. extending means according to claim 6, it is characterized in that, described at least one telescoping member also comprises the third level telescoping member (4) that is socketed on described second level telescoping member (3), and described third level telescoping member (4) links to each other with described second level telescoping member (3) by second oil hydraulic cylinder (10).
9. extending means according to claim 8, it is characterized in that, described first oil hydraulic cylinder (9) is oppositely installed each other with described second oil hydraulic cylinder (10), the cylinder barrel (10b) of described second oil hydraulic cylinder (10) is fixed together with the cylinder barrel (9b) of described first oil hydraulic cylinder (9), and the piston rod (10a) of described second oil hydraulic cylinder (10) is connected in described third level telescoping member (4).
10. an engineering equipment is characterized in that, comprises that described extending means is mounted to described engineering equipment by described installation component (1) according to each described extending means among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200101199U CN201991873U (en) | 2011-01-13 | 2011-01-13 | Telescoping mechanism and engineering equipment comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200101199U CN201991873U (en) | 2011-01-13 | 2011-01-13 | Telescoping mechanism and engineering equipment comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991873U true CN201991873U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200101199U Expired - Lifetime CN201991873U (en) | 2011-01-13 | 2011-01-13 | Telescoping mechanism and engineering equipment comprising same |
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| Country | Link |
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| CN (1) | CN201991873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012094895A1 (en) * | 2011-01-13 | 2012-07-19 | 长沙中联重工科技发展股份有限公司 | Multilevel telescoping mechanism and engineering equipment |
-
2011
- 2011-01-13 CN CN2011200101199U patent/CN201991873U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012094895A1 (en) * | 2011-01-13 | 2012-07-19 | 长沙中联重工科技发展股份有限公司 | Multilevel telescoping mechanism and engineering equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410013, No. 361, silver basin South Road, Changsha, Hunan, Hunan, Changsha Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013, No. 361, silver basin South Road, Changsha, Hunan, Hunan, Changsha Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
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| CX01 | Expiry of patent term |