CN211688000U - Steel wire rope tension protection device for auxiliary hanger rod for tower crane maintenance - Google Patents
Steel wire rope tension protection device for auxiliary hanger rod for tower crane maintenance Download PDFInfo
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- CN211688000U CN211688000U CN201922357855.0U CN201922357855U CN211688000U CN 211688000 U CN211688000 U CN 211688000U CN 201922357855 U CN201922357855 U CN 201922357855U CN 211688000 U CN211688000 U CN 211688000U
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Abstract
A wire rope tension protection device that supplementary jib of tower machine maintenance was used includes: the fixing unit comprises a maintenance auxiliary suspender, a limiting bottom plate and a fixing plate, wherein the maintenance auxiliary suspender is arranged on the tower crane body, the limiting bottom plate and the fixing plate are both arranged at the lower part of the maintenance auxiliary suspender, the fixing plate is positioned above the limiting bottom plate, a step hole is arranged on the fixing plate, and the large-aperture end of the step hole faces outwards; the protection unit is arranged at the step hole of the fixing unit and comprises a connector, a spring group, a nut and a steel wire rope wedge-shaped connector, and the connector comprises a connecting shaft and a blocking piece; and the control unit is a limit switch and is used for controlling whether the maintenance auxiliary suspender works or not. The utility model has the advantages that: simple structure, simple to operate only needs first debugging and confirms whether spacing normal work, and follow-up convenient to use need not to pay close attention to the maintenance often and assists the jib whether overload work, and the jib is assisted in the maintenance safe, reliable.
Description
Technical Field
The utility model relates to a wire rope pulling force protection device that tower machine maintenance jib was used belongs to the tower crane field.
Background
The tower machine is in daily use, when maintaining or changing parts, need use the supplementary jib of maintenance, and the supplementary jib of current maintenance only marks the biggest jack-up load on the hook frame or controls the supplementary jib hoisting capacity of maintenance by motor ability, lacks effectual hoisting capacity and judges, and the security also can not be ensured simultaneously, very easily appears lifting load overload phenomenon, if not paying attention to the operational aspect after the lifting hook lifts by crane in addition, the lifting hook can appear and dash the top the condition to lead to the wire rope fracture and the emergence of accident.
Disclosure of Invention
In order to solve the problem, the utility model provides a can carry out the wire rope tension protection device that a tower machine maintenance jib was used that detects to maximum hoisting capacity, wire rope pulling force.
A wire rope tension protection device that jib was used is assisted in tower machine maintenance, a serial communication port, include:
the fixing unit comprises a maintenance auxiliary suspender, a limiting bottom plate and a fixing plate, wherein the maintenance auxiliary suspender is arranged on the tower crane body, the limiting bottom plate and the fixing plate are both arranged at the lower part of the maintenance auxiliary suspender, the fixing plate is positioned above the limiting bottom plate, a step hole is arranged on the fixing plate, and the large-aperture end of the step hole faces outwards and is used for installing the protection unit;
the protection unit is arranged at the step hole of the fixing unit and comprises a connecting head, a spring group, a nut and a steel wire rope wedge-shaped joint, the connecting head comprises a connecting shaft and a blocking piece, the connecting shaft is axially divided into a connecting section, a blocking section and an inserting section, the inserting section of the connecting head is inserted into the step hole of the fixing plate from outside to inside and is blocked at the step surface of the step hole by the blocking section, and the end part of the inserting section and the end part of the connecting part are arranged at the inner side and the outer side of the fixing plate; the spring group is sleeved on the insertion section of the connector, and the end part of the insertion section is in threaded connection with a nut to prevent the spring group from falling off; the connecting section is connected with the wedge-shaped joint of the steel wire rope;
and the control unit is a limit switch and is arranged on the limit bottom plate, a limit head of the limit switch faces inwards, and the limit switch and a control circuit of the maintenance auxiliary suspender are connected into a loop and are used for controlling whether the maintenance auxiliary suspender works.
The inserting section and the blocking section of the connecting shaft are both round shafts, the outer diameter of the blocking section is larger than that of the inserting section, and the inserting section is provided with threads capable of being screwed with nuts; the connecting section is a flat opening section; the insertion section penetrates into the step hole of the fixing plate until the end face of the blocking section collides with the step end face of the step hole of the fixing plate, the spring group penetrates through the insertion section and is fixed by the nut, and therefore the spring group is prevented from being separated from the end of the insertion section; the flat opening section is connected with a wedge-shaped joint of a steel wire rope; the piece of blockking includes curb plate and limiting plate, the curb plate with limiting plate symmetry rigid coupling is blockking on the section is close to the terminal surface of flat mouthful section for with the supplementary jib of maintenance paste tightly in order to prevent that the connector from rocking.
The side plate, the limiting plate and the part attached to the maintenance auxiliary hanging rod are a plane.
The planes of the side plates and the limiting plates are parallel to each other.
The utility model discloses during the use, the supplementary jib lifting load of maintenance slightly is greater than rated load and removes through the connector towards the atress direction, makes the compression of spring assembly, adjusts the limit switch position, makes limit switch work to the jib stops upwards work is assisted in the maintenance. If the lifted heavy object is impacted, the tensile force of the steel wire rope exceeds the force of the spring group, the spring group is compressed, and the connector moves towards the stress direction, so that the maintenance auxiliary suspender stops working upwards, the lifted heavy object is prevented from continuously rising, and the phenomenon of rope breakage of the steel wire rope is avoided.
The beneficial effects of the utility model are that: simple structure, simple to operate only needs first debugging and confirms whether spacing normal work, and follow-up convenient to use need not to pay close attention to the maintenance often and assists the jib and whether overload work, has also ensured simultaneously that the lifting carries and has dashed the protection to wire rope after pushing up, has guaranteed wire rope's use, and the jib is assisted in the maintenance safe, reliable to avoid other a series of problems to appear.
Drawings
Fig. 1 is a prior art service assist boom.
Fig. 2 is a maintenance auxiliary suspension rod after the steel wire rope tension protecting device of the utility model is used.
Fig. 3 is an assembly view of the steel wire rope tension protection device of the utility model.
Fig. 4 is a structure diagram of the connection head.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
With reference to the accompanying drawings:
embodiment 1 a wire rope tension protection device that jib was used is assisted in tower machine maintenance, include:
the fixing unit comprises a maintenance auxiliary suspender 1, a limiting bottom plate 2 and a fixing plate 4, wherein the maintenance auxiliary suspender 1 is installed on the tower crane body, the limiting bottom plate 2 and the fixing plate 4 are both installed at the lower part of the maintenance auxiliary suspender 1, the fixing plate 4 is positioned above the limiting bottom plate 2, a step hole is formed in the fixing plate 4, and the large-aperture end of the step hole faces outwards and is used for installing the protection unit;
the protection unit is arranged at the step hole of the fixing unit and comprises a connecting head 3, a spring group 5, a nut 6 and a steel wire rope wedge-shaped joint 7, the connecting head 3 comprises a connecting shaft 31 and a blocking piece, the connecting shaft 31 is axially divided into a connecting section 313, a blocking section 312 and an inserting section 311, the inserting section 311 of the connecting head 3 is inserted into the step hole of the fixing plate 4 from outside to inside and is blocked at the step surface of the step hole by the blocking section 312, and the end part of the inserting section 311 and the end part of the connecting part are arranged at the inner side and the outer side of the fixing plate 4; the spring set 5 is sleeved on the insertion section 311 of the connector 3, and the end of the insertion section 311 is screwed with the nut 6 to prevent the spring set 5 from falling off; the connecting section 313 is connected with the steel wire rope wedge-shaped joint 7;
and the control unit is a limit switch 8 which is arranged on the limit bottom plate 2, the limit head of the limit switch faces inwards, and the limit switch and a control circuit of the maintenance auxiliary suspender 1 are connected into a loop for controlling whether the maintenance auxiliary suspender 1 works or not.
The insertion section 311 and the blocking section 312 of the connecting shaft 31 are both round shafts, the outer diameter of the blocking section 312 is larger than that of the insertion section 311, and the insertion section 311 is provided with threads capable of being screwed with the nut 6; the connecting section 3 is a flat opening section; the insertion section 311 penetrates into the stepped hole of the fixed plate 4 until the end face of the blocking section 311 collides with the stepped end face of the stepped hole of the fixed plate 4, the spring assembly 5 penetrates through the insertion section 311 and is fixed by the nut 6, so that the spring assembly 5 is prevented from being pulled out from the end part of the insertion section 311; the flat opening section 313 is connected with a steel wire rope wedge-shaped joint 7; the stop piece comprises a side plate 33 and a limiting plate 32, wherein the side plate 33 and the limiting plate 32 are symmetrically and fixedly connected to the end face, close to the flat opening section, of the stop section 312 and used for being tightly attached to the maintenance auxiliary suspension rod 1 to prevent the connecting head 3 from shaking.
The side plate 33 and the limiting plate 32 are in a plane with the portion attached to the auxiliary hanger bar 1.
The planes of the side plate 33 and the limiting plate 32 are parallel to each other.
The utility model discloses during the use, the supplementary jib lifting load of maintenance slightly is greater than rated load and removes through the connector towards the atress direction, makes the compression of spring assembly, adjusts the limit switch position, makes limit switch work to the jib stops upwards work is assisted in the maintenance. If the lifted heavy object is impacted, the tensile force of the steel wire rope exceeds the force of the spring group, the spring group is compressed, and the connector moves towards the stress direction, so that the maintenance auxiliary suspender stops working upwards, the lifted heavy object is prevented from continuously rising, and the phenomenon of rope breakage of the steel wire rope is avoided.
The connector 3 comprises a connecting shaft 31 and a blocking piece composed of a limiting plate 32 and a side plate 33, the connecting shaft 31 is sequentially divided into an insertion section 311, a blocking section 312 and a connecting section 313 along the axial direction, wherein the insertion section 311 and the blocking section 312 are both circular shafts, and the outer diameter of the blocking section 312 is larger than that of the insertion section 311 to form a step shaft; the end of the insertion section 311 is provided with a thread, and a nut is screwed on the end of the insertion section 311; the connecting section 313 is a flat opening and is used for connecting with the steel wire rope wedge-shaped joint 7; the side plates 33 and the limiting plates 32 are symmetrically and fixedly connected to the end face, close to the flat mouth section, of the blocking section 312 of the connecting shaft 31, the insertion section 311 of the connecting shaft 31 penetrates into the stepped hole of the fixing plate 4 until the insertion section collides with the end face of the stepped hole of the fixing plate 4, the spring set 5 penetrates through the connecting section 313 of the connecting shaft 31, and the connecting section is fixed by a nut 6, so that the spring set 5 is prevented from being separated from the insertion section 311; the connecting section 313 of the connecting shaft 31 is connected with the wire rope wedge joint 7; and the limit switch 8 is arranged above the limit bottom plate 2, and the limit head faces inwards.
When the nut 6 is screwed down, the side plate 33 on the connector 3 abuts against the maintenance auxiliary hanger rod 1 to prevent the connector 3 from rotating.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather the scope of the invention includes equivalent technical means that can be conceived by those skilled in the art based on the inventive concepts.
Claims (4)
1. The utility model provides a wire rope tension protection device that supplementary jib of tower machine maintenance was used which characterized in that includes:
the fixing unit comprises a maintenance auxiliary suspender, a limiting bottom plate and a fixing plate, wherein the maintenance auxiliary suspender is arranged on the tower crane body, the limiting bottom plate and the fixing plate are both arranged at the lower part of the maintenance auxiliary suspender, the fixing plate is positioned above the limiting bottom plate, a step hole is arranged on the fixing plate, and the large-aperture end of the step hole faces outwards and is used for installing the protection unit;
the protection unit is arranged at the step hole of the fixing unit and comprises a connecting head, a spring group, a nut and a steel wire rope wedge-shaped joint, the connecting head comprises a connecting shaft and a blocking piece, the connecting shaft is axially divided into a connecting section, a blocking section and an inserting section, the inserting section of the connecting head is inserted into the step hole of the fixing plate from outside to inside and is blocked at the step surface of the step hole by the blocking section, and the end part of the inserting section and the end part of the connecting part are arranged at the inner side and the outer side of the fixing plate; the spring group is sleeved on the insertion section of the connector, and the end part of the insertion section is in threaded connection with a nut to prevent the spring group from falling off; the connecting section is connected with the wedge-shaped joint of the steel wire rope;
and the control unit is a limit switch and is arranged on the limit bottom plate, a limit head of the limit switch faces inwards, and the limit switch and a control circuit of the maintenance auxiliary suspender are connected into a loop and are used for controlling whether the maintenance auxiliary suspender works.
2. The steel wire rope tension protecting device for the auxiliary suspension rod for tower crane maintenance as claimed in claim 1, wherein: the inserting section and the blocking section of the connecting shaft are both round shafts, the outer diameter of the blocking section is larger than that of the inserting section, and the inserting section is provided with threads capable of being screwed with nuts; the connecting section is a flat opening section; the insertion section penetrates into the step hole of the fixing plate until the end face of the blocking section collides with the step end face of the step hole of the fixing plate, the spring group penetrates through the insertion section and is fixed by the nut, and therefore the spring group is prevented from being separated from the end of the insertion section; the flat opening section is connected with a wedge-shaped joint of a steel wire rope; the piece of blockking includes curb plate and limiting plate, the curb plate with limiting plate symmetry rigid coupling is blockking on the section is close to the terminal surface of flat mouthful section for with the supplementary jib of maintenance paste tightly in order to prevent that the connector from rocking.
3. The steel wire rope tension protecting device for the auxiliary suspension rod for tower crane maintenance as claimed in claim 2, wherein: the side plate, the limiting plate and the part attached to the maintenance auxiliary hanging rod are a plane.
4. The steel wire rope tension protecting device for the auxiliary suspension rod for tower crane maintenance as claimed in claim 3, wherein: the planes of the side plates and the limiting plates are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357855.0U CN211688000U (en) | 2019-12-24 | 2019-12-24 | Steel wire rope tension protection device for auxiliary hanger rod for tower crane maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357855.0U CN211688000U (en) | 2019-12-24 | 2019-12-24 | Steel wire rope tension protection device for auxiliary hanger rod for tower crane maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211688000U true CN211688000U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922357855.0U Active CN211688000U (en) | 2019-12-24 | 2019-12-24 | Steel wire rope tension protection device for auxiliary hanger rod for tower crane maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211688000U (en) |
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2019
- 2019-12-24 CN CN201922357855.0U patent/CN211688000U/en active Active
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