CN205401365U - Detachable screw rod - Google Patents
Detachable screw rod Download PDFInfo
- Publication number
- CN205401365U CN205401365U CN201620191881.4U CN201620191881U CN205401365U CN 205401365 U CN205401365 U CN 205401365U CN 201620191881 U CN201620191881 U CN 201620191881U CN 205401365 U CN205401365 U CN 205401365U
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- CN
- China
- Prior art keywords
- screw rod
- screw
- rear portion
- threaded connection
- rod member
- 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.)
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Abstract
The utility model discloses a detachable screw rod, its characteristics are the screw rods that are formed by screw rod head and screw rod rear portion threaded connection, the drawbore is joined in marriage at its threaded connection position, is equipped with the round pin axle in the pinhole, the round pin axle by the split pin with screw rod head and the threaded connection after -fixing of screw rod rear portion, screw rod head one end is for being equipped with internal screw thread member connecting hole, the member connector of screw rod rear portion one end for being equipped with the external screw thread, member connector screw in member connecting hole is with being fixed it by round pin axle and split pin behind screw rod head and the screw rod rear portion threaded connection. Compared with the prior art, the utility model has the advantage of simple structure, easy dismounting, the good reliability, cost of maintenance is low, the installation with make conveniently, advantage that fittings life is high makes things convenient for amplitude changing device's maintenance greatly, improves security and economic nature that the hoist used.
Description
Technical field
This utility model relates to variable amplitude mechanism for crane technical field, especially a kind of detachable screw rod for big-and-middle-sized portal crane luffing mechanism.
Background technology
The jib lubbing mechanism of big-and-middle-sized high pedestal jib crane generally all adopts monoblock type screw rod luffing technology, and monoblock type screw rod is ensure the connection with jib, and the head of screw rod adopts square structure, and the rear portion of screw rod adopts circular configuration, and whole screw rod adopts forging.
Prior art existing problems are: jib lubbing mechanism is in inspection and maintenance process, need all to pull down whole screw rod, process is loaded down with trivial details, need to consume substantial amounts of man power and material, also there is great adverse effect in service life for its auxiliary equipment, even if jib lubbing mechanism occurs only small mechanical breakdown to need repairing, it is also required to all pull down whole screw rod, waste time and energy and seriously reduce the service efficiency of crane, owing to monoblock type screw rod is long, process equipment is had harsh requirement by screw rod integral manufacturing, delivery cycle is also affected by very big constraint, safety and economy that crane uses are had a strong impact on.
Utility model content
The purpose of this utility model is a kind of detachable screw rod designed for the deficiencies in the prior art, before screw rod is split into, rear two rod members, adopt threaded after to be fixed by bearing pin be an overall screw rod, can according to the maintenance requirement of jib lubbing mechanism, jib lubbing mechanism is overhauled by the front or rear rod member of dismantling screw, without whole screw rod is all pulled down, the inspection and maintenance making jib lubbing mechanism saves time, laborsaving, improve service efficiency and the safety of crane, reduce maintenance cost, not only solve the technical barrier of the maintenance of jib lubbing mechanism screw rod and maintenance, also solve the difficult problem in screw rod processing and manufacturing simultaneously, greatly facilitate the processing and fabricating of screw rod, reduce further the expense that screw rod makes and crane is safeguarded.
The purpose of this utility model is achieved in that a kind of detachable screw rod, it is characterized in the screw rod being formed by connecting by screw head and screw rod rear threads, its screw connection point joins draw-bore, bearing pin it is provided with in pin-and-hole, bearing pin is fixing after being connected with screw rod rear threads by screw head by split pin, and described screw head one end is for setting female rod member connecting hole；One end, described screw rod rear portion for being provided with externally threaded rod member union joint, screw rod rear portion by rod member union joint threaded with the rod member connecting hole of screw head after be fixed into detachable screw rod by bearing pin and split pin.
This utility model compared with prior art has simple in construction, easy accessibility, good reliability, maintenance cost is low, it is convenient to install and manufacture, and the advantage of auxiliary equipment high life significantly facilitates the maintaining of jib lubbing mechanism, improve safety and economy that crane uses, reduce further the expense that screw rod makes and crane is safeguarded.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is Fig. 1 cross section structure schematic diagram；
Fig. 3 is screw head structural representation；
Fig. 4 is screw rod rear structure schematic diagram.
Detailed description of the invention
Accompanying drawings 1～accompanying drawing 2, this utility model is made up of screw head 1 and screw rod rear portion 2, and screw head 1 is fixed by bearing pin 3 and split pin 4 after threadeding with screw rod rear portion 2, and described screw head 1 one end is for setting female rod member connecting hole 5；One end, described screw rod rear portion 2 is for being provided with externally threaded rod member union joint 7；Described rod member connecting hole 5 and rod member union joint 7 join draw-bore 6, and pin-and-hole 6 is axially vertical setting with rod member connecting hole 5 and rod member union joint 7；Described rod member union joint 7 screw in rod member connecting hole 5 by threaded with screw rod rear portion 2 for screw head 1 become detachable screw rod, pin-and-hole 6 is inserted into bearing pin 3 and is fixed by split pin 4.
Accompanying drawings 3, described screw head 1 one end connects hole 5 for setting female rod member, described rod member connects hole 5 and is provided with and joins the pin-and-hole 6 of brill with rod member union joint 7, pin-and-hole 6 and rod member connect hole 5 for axially vertical setting, rod member connects the female thread in hole 5 and is processed into trapezoidal round thread with reference to GB " GB/T10051.5 ", and reserve certain installation surplus, it is ensured that it is easily installed in the process installed.
Accompanying drawings 4, one end, described screw rod rear portion 2 is for being provided with externally threaded rod member joint 7, described rod member joint 7 is provided with and connects hole 5 with rod member and join the pin-and-hole 6 of brill, pin-and-hole 6 and rod member union joint 7 are axially vertical setting, and the external screw thread of rod member joint 7 is processed into reference to GB " GB/T10051.5 " and connects, with rod member, the trapezoidal round thread that hole 5 female thread matches.
This utility model is so to connect and dismounting: rod member joint 7 screws in rod member and connects in hole 5, is then inserted into bearing pin 3 at pin-and-hole 6 and is fixed by split pin 4 and connects into one for overall screw rod that jib lubbing mechanism jib connects.When jib lubbing mechanism inspection or maintenance, split pin 4 only need to be unclamped taking-up bearing pin 3, screw head 1 is rotated against the direction of trapezoidal round thread and is pulled down, greatly facilitate the maintaining of jib lubbing mechanism, make the dismounting that jib lubbing mechanism jib connects very convenient, substantially increase service efficiency and the safety of crane, reduce maintenance cost further.
More than simply this utility model is further described, and is not used to restriction this patent, all implement for this utility model equivalence, be intended to be limited solely by within the right of this patent.
Claims (1)
1. a detachable screw rod, it is characterized in that the screw rod threadeded by screw head (1) with screw rod rear portion (2), its screw connection point joins draw-bore (6), bearing pin (3) it is provided with in pin-and-hole (6), bearing pin (3) is fixing after being threadeded with screw rod rear portion (2) by screw head (1) by split pin (4), and described screw head (1) one end is for setting female rod member connecting hole (5)；Described screw rod rear portion (2) one end for being provided with externally threaded rod member union joint (7), screw rod rear portion (2) by rod member union joint (7) threaded with the rod member connecting hole (5) of screw head (1) after be fixed into detachable screw rod by bearing pin (3) and split pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191881.4U CN205401365U (en) | 2016-03-14 | 2016-03-14 | Detachable screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191881.4U CN205401365U (en) | 2016-03-14 | 2016-03-14 | Detachable screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401365U true CN205401365U (en) | 2016-07-27 |
Family
ID=56421747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620191881.4U Active CN205401365U (en) | 2016-03-14 | 2016-03-14 | Detachable screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570261A (en) * | 2016-03-14 | 2016-05-11 | 中船第九设计研究院工程有限公司 | Detachable screw |
-
2016
- 2016-03-14 CN CN201620191881.4U patent/CN205401365U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570261A (en) * | 2016-03-14 | 2016-05-11 | 中船第九设计研究院工程有限公司 | Detachable screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |