CN216399477U - Be used for marine crane winch gear box piston to dismantle specialized tool - Google Patents
Be used for marine crane winch gear box piston to dismantle specialized tool Download PDFInfo
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- CN216399477U CN216399477U CN202122123944.6U CN202122123944U CN216399477U CN 216399477 U CN216399477 U CN 216399477U CN 202122123944 U CN202122123944 U CN 202122123944U CN 216399477 U CN216399477 U CN 216399477U
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Abstract
The utility model belongs to a special maintenance tool and discloses a special tool for disassembling a gearbox piston of an offshore crane winch, which comprises an impact device, an adjusting connecting plate and two conical surface expansion type connecting devices, wherein the two groups of the two conical surface expansion type connecting devices are used for being connected and fixed with two piston spring holes; the adjusting connecting plate is used for connecting the impact device with the double-conical-surface expansion type connecting devices and adjusting the distance between the two groups of double-conical-surface expansion type connecting devices; the percussion device is used for reciprocating percussion motion so as to detach the winch gearbox piston. The piston spring hole can be protected, the piston spring hole is prevented from being damaged by pulling, and the piston precision is guaranteed; and after the special tool is used, the traditional method of using locking pliers and crowbars to disassemble the piston is eliminated, the risk of injury to hands of personnel in the disassembling process is avoided, and the safety of constructors is protected.
Description
Technical Field
The utility model belongs to a special maintenance tool, and particularly relates to a special tool for disassembling a gearbox piston of a winch of an offshore crane.
Background
The crane belongs to special equipment, and the winch gear box is an important precise operation component of the crane, and the reliability, the safety, the maintenance convenience and other aspects need to be improved, so that the safe operation of the crane can be ensured, and the maintenance is more convenient. Once the brake failure condition of the winch gearbox occurs, safety production accidents can be caused, and casualties or property loss can be caused.
In the daily overhauling and installing process of the offshore oil production fixed platform crane gearbox piston, because no special piston disassembling tool is provided, two locking pliers are usually adopted to clamp the edges of two spring holes of the piston, and then a pointed crowbar is inserted into a gap of the locking pliers to pry outwards. However, in the actual disassembly process, the jaw position of the locking pliers is easy to cause strain on the piston spring hole, so that the piston precision is influenced; moreover, the locking pliers are easy to fall off in the mode, so that the danger of hand injury of personnel is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and provides a special tool for disassembling a gearbox piston of a winch of an offshore crane, which can comprehensively improve the specialty and the reliability of piston disassembly, does not influence the precision of the piston and simultaneously ensures the safety of operators.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
a special tool for disassembling a gearbox piston of a winch of an offshore crane comprises a percussion device, an adjusting connecting plate and a double-conical-surface expansion type connecting device;
the striking device comprises a handle rod and a striking block, wherein the striking block is sleeved outside the handle rod and can reciprocate relative to the handle rod;
the adjusting connecting plate is connected to one end of the handle rod and is provided with two adjusting holes; the adjusting hole is a long circular hole and is used for adjusting the distance between the two double-conical-surface expansion type connecting devices;
the double-conical-surface expansion type connecting devices comprise two spring holes which respectively correspond to the pistons of the gear box; each double-conical-surface expansion type connecting device comprises a single-conical-surface connecting screw rod, a single-conical-surface pressing sleeve, a locking nut and double-side inner conical-surface expansion sleeves;
the single-conical-surface connecting screw comprises a connecting screw with an external thread, one end of the connecting screw is used for being connected with the adjusting hole, the other end of the connecting screw is provided with a conical-surface limiting part, and the diameter of the conical-surface limiting part is gradually increased from one end close to the connecting screw to the other end;
the outer diameter of the single-conical-surface pressing sleeve is gradually increased from one end to the other end, an axial through hole is formed along the central axis of the single-conical-surface pressing sleeve, and the inner diameter of the axial through hole is in clearance fit with the outer diameter of the connecting screw rod;
the locking nut can be in threaded connection with the connecting screw rod and limits the single-conical-surface pressing sleeve in a locking state;
the double-side inner conical surface expansion sleeve is a cylinder formed by annularly-divided three-piece components, a first conical surface hole and a second conical surface hole which are communicated with each other are arranged along the central axis, and the inner diameters of the first conical surface hole and the second conical surface hole are gradually increased from the middle to the two ends of the double-side inner conical surface expansion sleeve;
when the gearbox piston spring hole is used, the double-side inner conical surface expansion sleeve is arranged outside the single-conical-surface connecting screw rod, and after the first conical surface hole is attached to the conical surface limiting part, the double-side inner conical surface expansion sleeve and the single-conical-surface connecting screw rod are placed into the gearbox piston spring hole together; the single-conical-surface compression sleeve and the locking nut are sequentially sleeved on the connecting screw rod, after the single-conical-surface compression sleeve is pushed into the second conical-surface hole, the locking nut is attached to the single-conical-surface compression sleeve and locked, so that the three-piece assembly of the double-side inner conical-surface expansion sleeve is stressed and uniformly expanded outwards, and is embedded into a gear box piston spring hole, and the double-conical-surface expansion type connecting device is fixedly connected with the gear box piston spring hole; the impact block makes reciprocating impact motion, so that the winch gearbox piston can be taken out.
Further, handle bar one end is provided with and is used for connecting the external screw thread of adjusting the connecting plate, and the other end is provided with the gripping portion.
Further, the outer surface of striking piece is provided with anti-skidding line.
Further, the two adjusting holes are symmetrically arranged relative to the handle rod.
Furthermore, the adjusting connecting plate is provided with a size scale mark on one surface close to the percussion device.
Furthermore, the conical surface limiting part can be clamped in the first conical surface hole, so that the single-conical-surface connecting screw rod and the double-side inner conical surface expansion sleeve are relatively fixed.
Furthermore, the single-conical-surface pressing sleeve is pushed into the second conical-surface hole, so that the three-petal assembly of the double-side inner conical-surface expansion sleeve is stressed to uniformly expand outwards.
Further, the outer surface of the double-side inner conical surface expansion sleeve is subjected to knurling process treatment.
Furthermore, the connecting screw rod penetrates through the adjusting hole, and two ends of the adjusting hole are respectively locked and fixed through nuts.
The utility model has the beneficial effects that:
according to the special tool for disassembling the marine crane winch gearbox piston, the rear end is connected with the middle part through the adjusting connecting plate by adopting the impact device, and the connecting part of the front end and the piston spring hole is fixed by adopting the double-cone expansion type connecting device, so that the fixing is firm and reliable, and the piston can be disassembled only by knocking the impact block by hand in a reciprocating manner; the piston spring hole can be protected, the piston spring hole is prevented from being damaged by pulling, and the piston precision is guaranteed; and after the special tool is used, the traditional method of using locking pliers and crowbars to disassemble the piston is eliminated, the risk of injury to hands of personnel in the disassembling process is avoided, and the safety of constructors is protected.
Drawings
FIG. 1 is a schematic structural view of a special tool for disassembling a piston provided by the present invention;
FIG. 2 is a schematic view of a percussion device according to the present invention;
FIG. 3 is a schematic structural diagram of an adjusting connecting plate according to the present invention;
FIG. 4 is a schematic structural view of a double-tapered expansion-type connection provided by the present invention;
FIG. 5 is a schematic structural view of a single-cone connecting screw of a double-cone expansion-type connection device according to the present invention;
fig. 6 is a schematic structural view of a single-cone compression sleeve in a double-cone expansion-type connection device according to the present invention;
FIG. 7 is a schematic structural view of a double-sided internal conical expansion sleeve in a double-conical expansion-type connection device provided by the present invention;
fig. 8 is a schematic end view of a double-sided internal conical expansion sleeve in a double-conical expansion type connecting device according to the present invention.
In the figure: 1. a striking device 11, a handle rod 111, an external thread 112, a gripping part 12 and a striking block; 2. the adjusting connecting plate 21, the adjusting holes 22 and the central through hole; 3. biconical face inflation formula connecting device, 31, single conical surface connecting screw, 311, connecting screw, 312, conical surface spacing portion, 32, single conical surface compression cover, 33, lock nut, 34, two side internal conical surface inflation covers.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1, the embodiment discloses a special tool for detaching a piston of a winch gearbox of an offshore crane, which mainly comprises a percussion device 1 at the rear end, an adjusting connecting plate 2 at the middle part and a double-cone expansion type connecting device 3 at the front end, and has the characteristics of convenience in combination and connection, high use safety, no damage to the piston of the winch gearbox needing to be detached and inspected, and the like.
As shown in fig. 2, the striking device 1 comprises a handle lever 11 and a striking block 12. One end of the handle rod 11 is provided with an external thread 111 for being in threaded connection with the adjusting connecting plate 2; the other end is provided with a gripping part 112, and the outer surface of the gripping part 112 is processed into a rolled pattern for preventing the hand from being injured by slipping. The impact block 12 is provided with an axial through hole along the central axis thereof, and the inner diameter of the axial through hole is in clearance fit with the outer diameter of the handle rod 11; the outer surface of the impact block 12 is treated with a rolled pattern for anti-slip. The impact block 12 is assembled outside the handle rod 11 through an axial through hole thereof, and can generate impact force through reciprocating motion on the handle rod 11, so that the purpose of taking out the winch gearbox piston is achieved.
Adjusting connection board 2 sets up between percussion device 1 and bipyramid face inflation formula connecting device 3 for connect percussion device 1 and bipyramid face inflation formula connecting device 3, can adjust the distance between two sets of bipyramid face inflation formula connecting device 3 simultaneously.
As shown in fig. 3, the adjusting attachment plate 2 is provided with a central through hole 22, which central through hole 22 is provided with an internal thread for cooperation with an external thread 111 provided at the end of the handle lever 11, thereby completing the attachment of the adjusting attachment plate 2 to the percussion device 1. Adjusting holes 21 are respectively formed in two sides of the central through hole 22 of the adjusting connecting plate 2, the two adjusting holes 21 are symmetrically arranged relative to the central through hole 22, and the adjusting holes 21 are long circular holes. The two adjusting holes 21 are respectively used for installing the two double-conical-surface expansion type connecting devices 3, and the distance between the two groups of double-conical-surface expansion type connecting devices 3 can be adjusted through the installing positions of the double-conical-surface expansion type connecting devices 3 in the adjusting holes 21, so that the requirements of the winch gear box on disassembling the piston sizes of various types of gear boxes from 292HX13-00 to 292HX88-00 are met. As a preferred embodiment, the adjusting connecting plate 2 is provided with a size scale mark on a side close to the percussion device 1, and the mounting and positioning accuracy of the two sets of double-conical expansion type connecting devices 3 can be improved according to the size scale mark.
The double-cone expansion type connecting device 3 comprises two spring holes which respectively correspond to the pistons of the gear box. As shown in fig. 4, each double-conical expansion-type connecting device 3 is composed of a single-conical connecting screw 31, a single-conical pressing sleeve 32, a locking nut 33, and a double-sided inner conical expansion sleeve 34, wherein the double-sided inner conical expansion sleeve 34 is composed of annularly-divided three-piece assemblies.
As shown in fig. 5, the single-tapered connection screw 31 includes a connection screw 311 and a tapered stopper 312. The connecting screw 311 is provided with an external thread, one end of which is used for being connected with the adjusting hole 21, and the other end of which is provided with a conical surface limiting part 312. The outer diameter of the conical surface limiting part 312 gradually increases from one end close to the connecting screw 311 to the other end, that is, the outer surface of the conical surface limiting part is a conical surface.
As shown in fig. 6, the single-tapered pressing sleeve 32 has a tapered outer surface, which gradually increases in outer diameter from one end to the other end. The single-tapered clamping sleeve 32 is provided along its central axis with an axial through hole which can pass through the connecting screw 311. The inner diameter of the axial through hole of the single-conical-surface pressing sleeve 32 is in clearance fit with the outer diameter of the connecting screw 311, and the clearance range is 0.5-1 mm.
The locking nut 33 is used for being in threaded connection with the connecting screw 311, and the single-cone pressing sleeve 32 can be limited by locking the locking nut 33, so that the double-side inner cone expansion sleeve 34 formed by the three-piece assembly is stressed and uniformly expanded outwards.
As shown in fig. 7, the double-sided inner conical surface expansion sleeve 34 is composed of three-piece components which are circumferentially and equally divided, the combined double-sided inner conical surface expansion sleeve 34 is a cylinder, and a through hole with gradually increased inner diameters from the middle to the two ends is arranged in the cylinder along the central axis of the cylinder, namely a first conical surface hole and a second conical surface hole which are communicated with each other; that is, the inner surface of revolution of the double-sided internally tapered expansion shell 34 is two symmetrically disposed tapered surfaces.
The conical surface limiting part 312 of the single-conical-surface connecting screw 31 is matched with the first conical surface hole of the double-side inner conical-surface expansion sleeve 34, and the conical surface limiting part 312 can be clamped in the first conical surface hole, so that the single-conical-surface connecting screw 31 and the double-side inner conical-surface expansion sleeve 34 are relatively fixed. Generally, the taper of the tapered limiting portion 312 is consistent with the taper of the first tapered hole, and the cross-sectional diameter is slightly smaller than the first tapered hole.
The single tapered compression sleeve 32 conforms to the second tapered bore of the double-sided internally tapered expansion sleeve 34 and has a larger cross-sectional diameter than the second tapered bore. Thus, as the single-tapered compression sleeve 32 is pushed into the second tapered hole of the double-sided inner tapered expansion sleeve 34, the three-piece assembly of the double-sided inner tapered expansion sleeve 34 is forced to expand outward uniformly.
When in use, the single-conical-surface pressing sleeve 32 and the locking nut 33 are sequentially sleeved on the connecting screw 311 of the single-conical-surface connecting screw 31, and the smaller outer diameter end of the single-conical-surface pressing sleeve 32 faces the conical-surface limiting part 312 of the single-conical-surface connecting screw 31; at this time, the single-tapered compression sleeve 32 and the lock nut 33 are in a free state and are not compressed. The first conical hole of the double-sided inner conical surface expansion sleeve 34 formed by the three-petal assembly is attached to the conical surface limiting part 312 of the single-conical surface connecting screw 31, and attention is paid to the fact that no gap is generated between the three combined surfaces of the three-petal assembly. The double-side inner conical surface expansion sleeve 34 consisting of the end part of the single-conical-surface connecting screw rod 31 and the attached three-petal assembly is placed into a piston spring hole of the gear box together.
And pushing the single-cone pressing sleeve 32 into the other side cone surface of the through hole of the double-side inner cone surface expansion sleeve 34 consisting of the three-petal assembly, attaching the locking nut 33 to the large-diameter end surface of the single-cone pressing sleeve 32, and screwing the locking nut 33 to ensure that the double-side inner cone surface expansion sleeve 34 consisting of the three-petal assembly is stressed to uniformly expand outwards and is embedded into the spring hole of the gear box piston, so that the double-cone surface expansion type connecting device 3 is fixedly connected with the spring hole of the gear box piston.
In order to increase the friction force between the outer part of the bilateral inner conical surface expansion sleeve 34 consisting of the three-petal assembly and the piston spring hole of the gear box and protect the spring hole of the gear box from being damaged, the outer surface of the bilateral inner conical surface expansion sleeve 34 consisting of the three-petal assembly is designed to be processed by a knurling process.
The end part of the connecting screw 311 is connected with the adjusting connecting plate 2, after the connecting screw 311 penetrates into the adjusting hole 21 of the adjusting connecting plate 2, the center distances of the two piston spring holes are unequal according to different types of gear box pistons, the connecting screw 311 is adjusted in place according to the size scale marks on the adjusting connecting plate 2, and the connecting screw 311 is locked and fixed at two ends of the adjusting hole 21 through nuts.
So far, be used for marine crane winch gear box piston to dismantle specialized tool and connect and accomplish, use striking block 12 to do reciprocating impact motion, produce the impact to adjusting and connecting plate 2 to transmit the impact to winch gear box piston through bipyramid face inflation formula connecting device 3, thereby can take out winch gear box piston and inspect.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.
Claims (9)
1. A special tool for disassembling a gearbox piston of a winch of an offshore crane is characterized by comprising a percussion device, an adjusting connecting plate and a double-cone expansion type connecting device;
the striking device comprises a handle rod and a striking block, wherein the striking block is sleeved outside the handle rod and can reciprocate relative to the handle rod;
the adjusting connecting plate is connected to one end of the handle rod and is provided with two adjusting holes; the adjusting hole is a long circular hole and is used for adjusting the distance between the two double-conical-surface expansion type connecting devices;
the double-conical-surface expansion type connecting device comprises two groups of connecting devices, wherein the two groups of connecting devices respectively correspond to two spring holes of a gear box piston; each double-conical-surface expansion type connecting device comprises a single-conical-surface connecting screw rod, a single-conical-surface pressing sleeve, a locking nut and double-side inner conical-surface expansion sleeves;
the single-conical-surface connecting screw comprises a connecting screw with an external thread, one end of the connecting screw is used for being connected with the adjusting hole, the other end of the connecting screw is provided with a conical-surface limiting part, and the diameter of the conical-surface limiting part is gradually increased from one end close to the connecting screw to the other end;
the outer diameter of the single-conical-surface pressing sleeve is gradually increased from one end to the other end, an axial through hole is formed along the central axis of the single-conical-surface pressing sleeve, and the inner diameter of the axial through hole is in clearance fit with the outer diameter of the connecting screw rod;
the locking nut can be in threaded connection with the connecting screw rod and limits the single-conical-surface pressing sleeve in a locking state;
the double-side inner conical surface expansion sleeve is a cylinder formed by annularly-divided three-piece components, a first conical surface hole and a second conical surface hole which are communicated with each other are arranged along the central axis, and the inner diameters of the first conical surface hole and the second conical surface hole are gradually increased from the middle to the two ends of the double-side inner conical surface expansion sleeve;
when the gearbox piston spring hole is used, the double-side inner conical surface expansion sleeve is arranged outside the single-conical-surface connecting screw rod, and after the first conical surface hole is attached to the conical surface limiting part, the double-side inner conical surface expansion sleeve and the single-conical-surface connecting screw rod are placed into the gearbox piston spring hole together; the single-conical-surface compression sleeve and the locking nut are sequentially sleeved on the connecting screw rod, after the single-conical-surface compression sleeve is pushed into the second conical-surface hole, the locking nut is attached to the single-conical-surface compression sleeve and locked, so that the three-piece assembly of the double-side inner conical-surface expansion sleeve is stressed and uniformly expanded outwards, and is embedded into a gear box piston spring hole, and the double-conical-surface expansion type connecting device is fixedly connected with the gear box piston spring hole; connecting the connecting screw rod with an adjusting hole of the adjusting connecting plate according to the distance between the two groups of double-conical-surface expansion type connecting devices; the impact block makes reciprocating impact motion, so that the winch gearbox piston can be taken out.
2. The special tool for detaching the gearbox piston of the offshore crane winch according to claim 1, wherein the handle rod is provided with an external thread for connecting the adjusting connecting plate at one end and a gripping part at the other end.
3. The special tool for detaching the offshore crane winch gearbox piston as claimed in claim 1, wherein the outer surface of the impact block is provided with anti-skid lines.
4. The special tool for detaching the gearbox piston of the offshore crane winch according to claim 1, wherein the two adjusting holes are symmetrically arranged relative to the handle rod.
5. The special tool for detaching the gearbox piston of the offshore crane winch according to claim 1, wherein the adjusting connecting plate is provided with a dimension scale mark on one side close to the percussion device.
6. The special tool for detaching the offshore crane winch gearbox piston as claimed in claim 1, wherein the conical surface limiting part can be clamped inside the first conical surface hole, so that the single-conical-surface connecting screw rod and the double-side inner conical-surface expansion sleeve are relatively fixed.
7. The special tool for disassembling the marine crane winch gearbox piston as claimed in claim 1, wherein the single-tapered pressing sleeve is pushed into the second tapered hole, so that the three-lobe assembly of the double-sided inner tapered expansion sleeve can be uniformly expanded outwards under the stress.
8. The special tool for detaching the offshore crane winch gearbox piston as claimed in claim 1, wherein the outer surface of the double-sided inner conical surface expansion sleeve is processed by a knurling process.
9. The special tool for disassembling the gearbox piston of the winch of the offshore crane according to claim 1, wherein the connecting screw rod passes through the adjusting hole and is locked and fixed at two ends of the adjusting hole through nuts respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122123944.6U CN216399477U (en) | 2021-09-03 | 2021-09-03 | Be used for marine crane winch gear box piston to dismantle specialized tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122123944.6U CN216399477U (en) | 2021-09-03 | 2021-09-03 | Be used for marine crane winch gear box piston to dismantle specialized tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216399477U true CN216399477U (en) | 2022-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122123944.6U Active CN216399477U (en) | 2021-09-03 | 2021-09-03 | Be used for marine crane winch gear box piston to dismantle specialized tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216399477U (en) |
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2021
- 2021-09-03 CN CN202122123944.6U patent/CN216399477U/en active Active
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