CN211004286U - Floating crown block structure - Google Patents
Floating crown block structure Download PDFInfo
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- CN211004286U CN211004286U CN201922036893.6U CN201922036893U CN211004286U CN 211004286 U CN211004286 U CN 211004286U CN 201922036893 U CN201922036893 U CN 201922036893U CN 211004286 U CN211004286 U CN 211004286U
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- 125000006850 spacer group Chemical group 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 238000004804 winding Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a floating crown block structure, including overhead traveling crane frame and the overhead traveling crane assembly pulley of setting on overhead traveling crane frame, overhead traveling crane guide pulley, piston rod link, left rope leading wheel and right rope leading wheel, left rope leading wheel is located the radial left and right sides of overhead traveling crane assembly pulley and three's axial lead parallel arrangement respectively with right rope leading wheel, and left rope leading wheel staggers with right rope leading wheel and arranges, the utility model discloses in, the axial direction of controlling the rope leading wheel keeps parallel with the axial direction of overhead traveling crane assembly pulley, controls the rope leading wheel and staggers and arranges, and whole rope is level and smooth in the same direction as the state of winding on overhead traveling crane assembly pulley and the left and right rope leading wheel, can effectually reduce the wearing and tearing of rope and pulley, the life-span of extension rope and pulley. The connection and installation positions of the piston rods of the compensation cylinders are the front side and the rear side of the crown block, so that the interference with rocker arm mechanisms, guide rails and guide rail supports on the left side and the right side can be avoided, the installation space is more flexible and free, and the installation is convenient.
Description
Technical Field
The utility model belongs to the technical field of ocean drilling equipment technique and specifically relates to a floating crane structure.
Background
With the increasing understanding of people on the ocean, the ocean attracts people to develop and explore the ocean because of the abundant and wide space, and the future living resources of the people are dependent on the ocean, so how to develop and utilize the resources of the ocean, especially energy development, has been written into the development and planning as the basic strategy of the country. The floating crown block is used as an important hoisting device of a marine mineral development operation ship and has a very important position in marine mineral resource development. The floating crown block (the crown block for short in the application) mainly comprises a crown block frame and a guide system arranged on the crown block frame, a compensation system, a pulley block and a rocker arm system, wherein the guide system guides the compensation motion of the crown block, the compensation system is used for supporting the crown block and driving the crown block to compensate the heave of a drilling platform, the pulley block is used for winding a steel wire rope and is used for directly hoisting the traveling block, one end of the steel wire rope wound on the pulley block is a dead end, the dead end is fixed on the drilling platform after bypassing a movable pulley on a rocker arm mechanism, the other end of the steel wire rope is a live end, and the live end is wound and fixed on a winch after bypassing the movable pulley on the rocker arm mechanism.
The design of the rocker arm mechanism solves a series of problems that in the heave compensation motion of the crown block, because the positions of the crown block and the winch are changed, the winch stalls and the hook load of the large hook is unstable due to the extension and the shortening of a steel wire rope, and the like, and is a key mechanism of the heave compensation system of the crown block. If the rocker arm mechanism is not used, the steel wire rope needs to be continuously wound along with the heave motion of the platform under the rolling drive of the winch in order to keep constant pulling force, the abrasion of the steel wire rope can be serious, the work is greatly influenced, the steel wire rope can be seriously broken to cause the accidents of crown block falling, drill stem breakage and the like, and therefore, the rocker arm mechanism is reasonably designed, and the heave compensation performance of the crown block is influenced critically.
In conclusion, the design of a floating crown block structure which is safe and reliable and can improve the heave compensation motion compensation efficiency is always a difficult point and a key point which are focused by scientific research and designers in the industry, and is also the purpose of the patent application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a floating crane structure to solve the problem that proposes in the background art.
A floating crown block structure comprises a crown block frame, a crown block pulley block, a crown block guide wheel, a piston rod connecting frame, a left rope guide wheel and a right rope guide wheel, wherein the crown block pulley block, the crown block guide wheel, the piston rod connecting frame, the left rope guide wheel and the right rope guide wheel are arranged on the crown block frame;
the crown block frame comprises a crown block base, a middle vertical plate, a left vertical plate and a right vertical plate, wherein the middle vertical plate is arranged on the crown block base, and the left vertical plate and the right vertical plate are respectively positioned at the left side of the middle vertical plate and near the back position of the right side of the middle vertical plate or at the left side of the middle vertical plate and near the back position of the right side of the middle vertical plate;
the piston rod connecting frame comprises a front piston rod connecting frame and a rear piston rod connecting frame which are fixedly arranged at the middle position of the top of the front wall of the front middle vertical plate and the middle position of the top of the rear wall of the rear middle vertical plate respectively, and the front piston rod connecting frame and the rear piston rod connecting frame are respectively used for connecting piston rods of the front compensation cylinder and the rear compensation cylinder;
the front wall of the front middle vertical plate is respectively provided with a first front crown block guide wheel frame at the left side and the right side of the piston rod connecting frame, and the front side wall of the crown block base is respectively provided with a second front crown block guide wheel frame vertically under the two first front crown block guide wheel frames; the rear wall of the rear middle vertical plate is provided with a first rear crown block guide wheel frame at the positions on the left side and the right side of the piston rod connecting frame respectively, and a second rear crown block guide wheel frame is arranged on the rear side wall of the crown block base and vertically below the first two rear crown block guide wheel frames respectively;
the overhead traveling crane comprises a front overhead traveling crane guide wheel frame I, a front overhead traveling crane guide wheel frame II, a rear overhead traveling crane guide wheel frame I and a rear overhead traveling crane guide wheel frame II, wherein the front overhead traveling crane guide wheel frame I, the front overhead traveling crane guide wheel frame II, the rear overhead traveling crane guide wheel frame I and the rear overhead traveling crane guide wheel frame II are all used for supporting and installing overhead traveling crane guide wheels, the overhead traveling crane guide wheels are used for being matched with vertically arranged overhead traveling crane guide rails in a sliding mode to guide the overhead traveling.
Preferably, the front overhead traveling crane guide wheel frame I, the front overhead traveling crane guide wheel frame II, the rear overhead traveling crane guide wheel frame I and the overhead traveling crane guide wheel on the rear overhead traveling crane guide wheel frame II are installed through self-aligning roller bearings.
The overhead traveling crane base is the cavity frame plate of Z type structure, and the overhead traveling crane base includes the upper plate of Z type structure, the hypoplastron of Z type structure and presss from both sides the gusset of establishing a plurality of vertically and horizontally staggered arrangements between upper plate and hypoplastron promptly, and the position that the overhead traveling crane base corresponds the overhead traveling crane assembly pulley is the central region of Z type structure, and this region is provided with the through-hole of stepping down that is used for crossing the rope, the protruding wing of the regional left and right sides in center of Z type structure is used for connecting the installation respectively left riser and right riser.
The position that the lateral wall corresponds the overhead traveling crane assembly pulley about preceding intermediate riser and back intermediate riser sets up to the structure that caves in to being close to overhead traveling crane assembly pulley axis direction, alleviates overhead traveling crane frame weight on the one hand, and on the other hand is convenient for reserve sufficient operating space and installs overhead traveling crane assembly pulley and rope.
The crown block pulley block is arranged on the crown block frame through a main shaft, the crown block pulley block comprises a plurality of coaxially arranged pulleys, each pulley is rotatably sleeved in the middle area of the main shaft, and two ends of the main shaft are respectively fixedly connected with a front middle vertical plate and a rear middle vertical plate; a first spacer ring is arranged between every two adjacent pulleys, and a second spacer ring is arranged between the pulley on the outermost side in the axial direction and the front and rear middle vertical plates.
Preferably, a fixing screw for fixing the position of the first spacer ring and the second spacer ring is screwed between the first spacer ring and the second main shaft.
The floating crown block structure further comprises a damper connecting plate arranged at the top of the crown block frame, the damper connecting plate is perpendicularly connected between the front middle vertical plate rear wall and the rear middle vertical plate front wall, the length direction of the damper connecting plate is arranged along the front-rear direction, the top surface is provided with two damper connecting seats which are symmetrical front and rear, the damper connecting seats are used for being connected with damper piston rods, and a cylinder body of a damper is fixed together with the crown block guide rail support and the drilling platform and is located above the crown block frame.
Preferably, the damper is a magnetorheological damper.
To the explanation of the utility model of all directions: with reference to fig. 1, the direction inside the paper in fig. 1 is the rear direction, the direction outside the paper is the front direction, the left side in fig. 1 is the left side, and the right side in fig. 1 is the right side.
The utility model discloses following beneficial effect has at least:
the utility model discloses in, control the axial direction of rope leading wheel and the axial direction of overhead traveling crane assembly pulley and keep parallel, control the rope leading wheel stagger and arrange and be located the axial both sides outer end of overhead traveling crane assembly pulley respectively, whole rope is level and smooth in the same direction as around the state on overhead traveling crane assembly pulley and control the rope leading wheel, can effectually reduce the wearing and tearing of rope and pulley, the life-span of extension rope and pulley.
The utility model discloses in, the piston rod link is arranged respectively in the front and back side of overhead traveling crane frame, and the connection of compensation jar piston rod is the front and back side of overhead traveling crane with the mounted position, can avoid taking place to interfere with the rocker mechanism, guide rail and the rail brackets of the left and right sides, and installation space is more nimble free, simple to operate. The main pressure of drilling string is born to the compensation jar from beginning to end, for the passive compensation jar of pressurized always, owing to arrange both sides around overhead traveling crane frame, the space is nimble, can set up the passive compensation jar to straight pushing-type, the axis of passive compensation jar arranges along vertical direction promptly, for current oblique pushing-type (the axis of passive compensation jar is for the slope and not vertical promptly), the energy consumption of this application is littleer, the structure is also compacter, stability is higher, more be fit for the quick compensating system of long stroke pneumatic cylinder, and it is convenient to maintain, simple to operate.
The utility model discloses in, the overhead traveling crane guide pulley of wall installation behind the overhead traveling crane frame provides very good atress structure for the overhead traveling crane moves in overhead traveling crane guide rail bracket, has reduced the friction between the overhead traveling crane and the guide rail that float in the heave compensation motion of the big displacement of low frequency, and self-aligning roller bearing can greatly reduce because the influence of rotational symmetry structure to the moment of torsion that the overhead traveling crane produced that floats.
The utility model discloses in, the limiting displacement of direction about the overhead traveling crane guide rail passes through the overhead traveling crane guide wheel and exerts the overhead traveling crane, and the fore-and-aft direction's limiting displacement is exerted to the overhead traveling crane through preceding piston rod link and back piston rod link respectively to the front and back compensation jar, and the overhead traveling crane is difficult to take place the skew in the horizontal plane and rock, and whole overhead traveling crane operation is more steady, and the security is good.
The utility model discloses be provided with the attenuator connecting plate at the top of overhead traveling crane frame, can be connected with magneto rheological damper as active or passive compensation jar to passive compensation jar is as first heavy compensation, and magneto rheological damper can provide the heavy compensation of second for the heaving of platform.
The utility model discloses in, the overhead traveling crane base of overhead traveling crane frame bottom is the cavity frame plate of Z type structure, has reduced the weight of the overhead traveling crane that floats, when reducing the energy consumption, because the main atress position of overhead traveling crane frame is the first half of middle riser, so such cavity setting can not influence the performance of overhead traveling crane again.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a front view of the floating roof vehicle structure of the preferred embodiment of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1 in accordance with the present invention;
fig. 3 is a sectional view of fig. 1 taken along line B-B.
In the figure: 1-crown block, 10-crown block base, 101-upper plate, 102-lower plate, 103-rib plate, 104-abdicating through hole, 105-convex wing, 106-installation bottom plate, 11-middle vertical plate, 111-front middle vertical plate, 112-rear middle vertical plate, 12-left vertical plate, 121-left front vertical plate, 122-left rear vertical plate, 13-right vertical plate, 131-right front vertical plate, 132-right rear vertical plate, 2-crown block pulley, 20-pulley, 21-main shaft, 22-end cover, 23-first spacing ring, 24-second spacing ring, 25-retention screw, 26-cylindrical roller bearing, 3-crown block guide wheel, 31-first front crown block guide wheel, 32-second front crown block guide wheel, 33-first rear crown block guide wheel, 34-second rear crown block guide wheel, 35-connecting shaft, 4-piston rod connecting frame, 41-front piston rod connecting frame, 42-rear piston rod connecting frame, 5-left rope guide wheel, 6-right rope guide wheel, 7-overhead crane guide rail, 8-damper connecting plate, 81-damper connecting seat, 9-middle shaft, 91-baffle, 92-third spacer ring and 94-fourth spacer ring.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1 to 3, a floating crown block structure includes a crown block frame 1, a crown block pulley block 2, a crown block guide pulley 3, a piston rod connecting frame 4, a left rope guide pulley 5 and a right rope guide pulley 6, which are arranged on the crown block frame, wherein the left rope guide pulley and the right rope guide pulley are respectively located on the radial left side and the radial right side of the crown block pulley block, and the axial leads of the left rope guide pulley and the right rope guide pulley are arranged in parallel, as shown in fig. 3, the left rope guide pulley and the right rope guide pulley are arranged in a staggered manner, that is, the left rope guide pulley is located on the left front side of the crown block pulley block, and the right rope guide pulley is located on;
the overhead crane frame comprises an overhead crane base 10, a middle vertical plate 11 arranged on the overhead crane base, and a left vertical plate 12 and a right vertical plate 13 which are respectively positioned at the left side close to the front position and the right side close to the rear position of the middle vertical plate, the middle vertical plate comprises a front middle vertical plate 111 and a rear middle vertical plate 112 which are arranged in parallel in the front and the rear direction, the front middle vertical plate and the rear middle vertical plate are used for installing and supporting the overhead crane pulley block 2, the left vertical plate comprises a left front vertical plate 121 and a left rear vertical plate 122 which are arranged in parallel in the front and the rear direction, the left front vertical plate and the left rear vertical plate are used for installing and supporting the left rope guide wheel 5, the right vertical plate comprises a right front vertical plate 131 and a right rear vertical plate 132 which are;
the piston rod connecting frame comprises a front piston rod connecting frame 41 and a rear piston rod connecting frame 42 which are fixedly arranged at the middle position of the top of the front wall of the front middle vertical plate and the middle position of the top of the rear wall of the rear middle vertical plate respectively, and the front piston rod connecting frame and the rear piston rod connecting frame are respectively used for connecting piston rods (not shown in the figure) of the front and rear compensation cylinders;
the front wall of the front middle vertical plate is respectively provided with a first front crown block guide wheel frame 31 at the left side and the right side of the piston rod connecting frame, and the front side wall of the crown block base is respectively provided with a second front crown block guide wheel frame 32 vertically under the two first front crown block guide wheel frames; a rear crown block guide wheel frame I33 is respectively arranged on the rear wall of the rear middle vertical plate at the positions of the left side and the right side of the piston rod connecting frame, and a rear crown block guide wheel frame II 34 is respectively arranged on the rear side wall of the crown block base vertically under the two corresponding rear crown block guide wheel frames I;
the overhead traveling crane comprises a front overhead traveling crane guide wheel frame I, a front overhead traveling crane guide wheel frame II, a rear overhead traveling crane guide wheel frame I and a rear overhead traveling crane guide wheel frame II which are all used for supporting and installing an overhead traveling crane guide wheel 3, the overhead traveling crane guide wheel is used for being matched with a vertically arranged overhead traveling crane guide rail 7 in a sliding mode to guide the overhead traveling crane to move up and down, and the axial direction of the overhead traveling crane guide wheel is parallel to the axial direction of an overhead traveling crane pulley block.
The crown block pulley block 2 is arranged on the crown block frame through a main shaft 21, the crown block pulley block comprises a plurality of pulleys 20 which are coaxially arranged, each pulley is arranged in the middle area of the main shaft through a cylindrical roller bearing 26, and two ends of the main shaft respectively extend into holes preset in a front middle vertical plate and a rear middle vertical plate and are fixedly connected through an end cover 22; a first spacer ring 23 is arranged between every two adjacent pulleys, and a second spacer ring 24 is arranged between the pulley on the outermost side in the axial direction and the front and rear middle vertical plates.
In this embodiment, a set screw 25 for fixing the position of the first spacer ring and the second spacer ring is screwed between the first spacer ring and the second main shaft.
In this embodiment, the left and right rope guide wheels are mounted on the left and right vertical plates through the center shaft 9 with a shoulder and the cylindrical roller bearings 26, the thin end (i.e., the end without the shoulder) of the center shaft is sleeved with a third spacer ring, the thick end of the center shaft is sleeved with a fourth spacer ring, the thin end of the center shaft sleeved with the third spacer ring has the same diameter as the thick end of the center shaft, the third spacer ring is sleeved with the fourth spacer ring, the fourth spacer ring is used for fixing the axial position of the left and right rope guide wheels, and the thin end of the center shaft is fixed with the left and right front vertical plates.
In this embodiment, four crown block guide wheels are mounted on each of the first front crown block guide wheel frame, the second front crown block guide wheel frame, the first rear crown block guide wheel frame and the second rear crown block guide wheel frame, each crown block guide wheel is mounted in the middle of the connecting shaft 35 through a self-aligning roller bearing (not shown), and two ends of the connecting shaft are connected with the crown block guide wheel frames.
In this embodiment, the crown block base 10 is a hollow frame plate with a Z-shaped structure, that is, the crown block base includes an upper plate 101 with a Z-shaped structure, a lower plate 102 with a Z-shaped structure, and a plurality of rib plates 103 arranged in a criss-cross manner and sandwiched between the upper plate and the lower plate, the position of the crown block base corresponding to the crown block pulley block is a central area of the Z-shaped structure, the central area is provided with a yielding through hole 104 for passing a rope, and the convex wings 105 on the left side and the right side of the central area of the Z-shaped structure are respectively used for connecting and installing the left vertical plate and the right vertical plate.
In this embodiment, the middle riser is directly connected with the upper plate is perpendicular, and left riser, right riser pass through mounting floor 106 and are connected with the upper plate.
Referring to fig. 1, in this embodiment, the positions of the left and right side walls of the front middle vertical plate and the rear middle vertical plate, which correspond to the crown block pulley block, are set to be recessed toward the direction close to the axis of the crown block pulley block, so that on one hand, the weight of the crown block frame is reduced, and on the other hand, a sufficient operating space is conveniently reserved for installing the crown block pulley block and the rope.
In this embodiment, the overhead traveling crane structure that floats is still including setting up the attenuator connecting plate 8 between two middle riser tops, the attenuator connecting plate is connected perpendicularly between riser 111 rear wall and middle riser 112 antetheca in the front, the length direction of attenuator connecting plate sets up along the fore-and-aft direction, the top surface is provided with two attenuator connecting seats 81 of longitudinal symmetry, the attenuator connecting seat is used for connecting the attenuator piston rod, the cylinder body of attenuator is together fixed with overhead traveling crane guide rail bracket and drilling platform and is located overhead traveling crane frame top, the attenuator can together be as passive compensation jar with the main compensation jar that overhead traveling crane frame front and back both sides are connected, also can regard as the initiative compensation jar alone.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A floating crown block structure is characterized by comprising a crown block frame (1), a crown block pulley block (2), a crown block guide wheel (3), a piston rod connecting frame (4), a left rope guide wheel (5) and a right rope guide wheel (6), wherein the crown block pulley block, the crown block guide wheel (2), the crown block guide wheel (3), the piston rod connecting frame (4), the left rope guide wheel and the right rope guide wheel are arranged on the radial left side and the radial right side of the crown block pulley block respectively, the axial leads of the left rope guide wheel and the right rope guide wheel are arranged in parallel, the left rope guide wheel and the right rope guide wheel are arranged in a staggered mode, namely the left rope guide wheel is arranged on the left front side or the left rear side of the crown block pulley block, and correspondingly;
the crown block frame comprises a crown block base (10), a middle vertical plate (11) arranged on the crown block base, a left vertical plate (12) and a right vertical plate (13) which are respectively positioned at the front position close to the left side and the rear position close to the right side of the middle vertical plate or at the rear position close to the left side and the front position close to the right side of the middle vertical plate, the middle vertical plates comprise a front middle vertical plate (111) and a rear middle vertical plate (112) which are arranged in parallel from front to back, the front middle vertical plate and the rear middle vertical plate are used for installing and supporting the crown block pulley block, the left vertical plate comprises a left front vertical plate (121) and a left rear vertical plate (122) which are arranged in parallel from front to back, the left front vertical plate and the left rear vertical plate are used for installing and supporting the left rope guide wheel (5), the right vertical plate comprises a right front vertical plate (131) and a right rear vertical plate (132) which are arranged in parallel from front to back, and the right front vertical plate and the right rear vertical plate are used for installing and supporting;
the piston rod connecting frame comprises a front piston rod connecting frame (41) and a rear piston rod connecting frame (42) which are fixedly arranged at the middle position of the top of the front wall of the front middle vertical plate and the middle position of the top of the rear wall of the rear middle vertical plate respectively, and the front piston rod connecting frame and the rear piston rod connecting frame are respectively used for connecting piston rods of the front compensation cylinder and the rear compensation cylinder;
the front wall of the front middle vertical plate is respectively provided with a first front crown block guide wheel frame (31) at the positions of the left side and the right side of the piston rod connecting frame, and a second front crown block guide wheel frame (32) is respectively arranged on the front side wall of the crown block base and vertically below the first two front crown block guide wheel frames; a rear crown block guide wheel frame I (33) is respectively arranged on the rear wall of the rear middle vertical plate at the positions of the left side and the right side of the piston rod connecting frame, and a rear crown block guide wheel frame II (34) is respectively arranged on the rear side wall of the crown block base vertically under the two rear crown block guide wheel frames I;
the overhead traveling crane comprises a front overhead traveling crane guide wheel frame I, a front overhead traveling crane guide wheel frame II, a rear overhead traveling crane guide wheel frame I and a rear overhead traveling crane guide wheel frame II which are used for supporting and installing the overhead traveling crane guide wheels, the overhead traveling crane guide wheels are used for being matched with vertically arranged overhead traveling crane guide rails (7) in a sliding mode to guide the overhead traveling cranes to move up and down, and the axial direction of the overhead traveling crane guide wheels is parallel to the axial direction of overhead traveling crane pulley blocks.
2. The floating crown block structure according to claim 1, wherein the crown block base is a hollow frame plate with a Z-shaped structure, namely the crown block base comprises an upper plate (101) with the Z-shaped structure, a lower plate (102) with the Z-shaped structure and a plurality of rib plates (103) which are arranged between the upper plate and the lower plate in a criss-cross mode, the position, corresponding to a crown block pulley block, of the crown block base is a central area of the Z-shaped structure, an abdicating through hole (104) for passing a rope is arranged in the central area, and the convex wings (105) on the left side and the right side of the central area of the Z-shaped structure are respectively used for connecting and installing the left vertical plate and the right vertical plate.
3. The floating crown block structure of claim 1, wherein the left and right side walls of the front and rear intermediate risers corresponding to the crown block are recessed toward the axis of the crown block, so as to reduce the weight of the crown block frame and to provide sufficient space for installing the crown block and the rope.
4. The floating crown block structure according to claim 1, wherein the crown block guide wheels on the first front crown block guide wheel frame, the second front crown block guide wheel frame, the first rear crown block guide wheel frame and the second rear crown block guide wheel frame are installed by self-aligning roller bearings.
5. The floating crown block structure of claim 1, wherein the crown block pulley block is mounted on the crown block frame through a main shaft (21), the crown block pulley block comprises a plurality of pulleys (20) which are coaxially arranged, each pulley is rotatably sleeved in the middle area of the main shaft, and two ends of the main shaft are respectively fixedly connected with the front middle vertical plate and the rear middle vertical plate; a first spacer ring (23) is arranged between every two adjacent pulleys, and a second spacer ring (24) is arranged between the pulley on the outermost side in the axial direction and the front and rear middle vertical plates.
6. The floating crown block structure of claim 5, wherein a retaining screw (25) for fixing the position of the first spacer ring and the second spacer ring is screwed between the first spacer ring, the second spacer ring and the second main shaft.
7. The floating crown block structure according to any one of claims 1 to 6, further comprising a damper connecting plate (8) disposed on the top of the crown block, wherein the damper connecting plate is vertically connected between the rear wall of the front middle riser and the front wall of the rear middle riser, the length direction of the damper connecting plate is disposed along the front-rear direction, the top surface is provided with two damper connecting seats (81) which are symmetrical front and rear, and the damper connecting seats are used for connecting damper piston rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036893.6U CN211004286U (en) | 2019-11-22 | 2019-11-22 | Floating crown block structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036893.6U CN211004286U (en) | 2019-11-22 | 2019-11-22 | Floating crown block structure |
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| Publication Number | Publication Date |
|---|---|
| CN211004286U true CN211004286U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922036893.6U Withdrawn - After Issue CN211004286U (en) | 2019-11-22 | 2019-11-22 | Floating crown block structure |
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| CN (1) | CN211004286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963423A (en) * | 2019-11-22 | 2020-04-07 | 中南大学 | Floating crown block structure |
-
2019
- 2019-11-22 CN CN201922036893.6U patent/CN211004286U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963423A (en) * | 2019-11-22 | 2020-04-07 | 中南大学 | Floating crown block structure |
| CN110963423B (en) * | 2019-11-22 | 2024-05-24 | 中南大学 | Floating crown block structure |
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