Crown block fixed pulley steel wire rope anti-falling structure

Abstract

The utility model discloses a crown block fixed pulley steel wire rope anti-falling structure which comprises a supporting mechanism, a pulley mechanism is arranged on the inner wall of the supporting mechanism, a steel wire rope is arranged on the surface of the pulley mechanism, an anti-falling mechanism is arranged on the surface of the upper end of the supporting mechanism, and the steel wire rope touches an upper roller to drive the upper roller to rotate. Meanwhile, the lower roller on the lower portion is rotationally connected with the connecting rod through the first rotating rod, when the steel wire rope on the lower portion is disengaged, the lower roller can limit movement of the steel wire rope, meanwhile, the steel wire rope can drive the lower roller to rotate when making contact with the lower roller, and the steel wire rope can be further prevented from disengaging from the groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crown block equipment, especially to a crown block fixed pulley steel wire rope anti -drop structure. BACKGROUND

[0002] The crown block hoisting equipment in the factory is generally through the cooperation of steel wire rope, movable pulley, fixed pulley and winding drum to control the direction and lifting of the lifting appliance, however, in the lifting process of the lifting appliance, the steel wire rope will jump out of the pulley due to the reasons such as relaxation of the steel wire rope, vibration of the lifting hook and operation error. If the steel wire rope cannot be found in time after jumping out of the pulley, the steel wire rope will directly contact with the fixed pulley axle, the axle will be seriously worn, the fixed pulley will fall from the crown block body or the steel wire rope will be seriously worn to cause the rope breakage.

[0003] Patent publication number CN203392751U discloses a kind of stop crown block fixed pulley device, including the fixed pulley of being connected on fixed frame by axle, and the steel wire rope of being wound on the outside;Support is arranged at the lower part of fixed frame, and the support is provided with a plurality of mutually butted guide wheels with grooves, and the two ends of the steel wire rope wound on the outside of fixed pulley are respectively passed from the grooves of two adjacent guide wheels.The utility model adopts the above structure, and the guide wheel will limit the steel wire rope during use, and the angle between the fixed pulley and the steel wire rope is controlled within a certain range.

[0004] In order to control the angle between the pulley of the crown block and the steel wire rope, it is difficult to control within a certain range during use, when the inclined pull phenomenon occurs, the steel wire rope is easy to deviate, and the problem of falling out of the groove and separating from the fixed pulley occurs, the prior art uses the support arranged at the lower part of the fixed frame, the support is provided with a plurality of mutually butted guide wheels with grooves, and the two ends of the steel wire rope wound on the outside of the fixed pulley are respectively passed from the grooves of two adjacent guide wheels, so that the guide wheel limits the steel wire rope, but the steel wire rope will also rub against the guide wheel, which is easy to cause the steel wire rope to break, and further cause the safety accident of the crown block. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a kind of crown block fixed pulley steel wire rope anti-drop structure, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A kind of crown block fixed pulley steel wire rope anti-drop structure, including support mechanism, the inner wall of the support mechanism is provided with pulley mechanism, the surface of the pulley mechanism is provided with steel wire rope, and the upper end surface of the support mechanism is provided with anti-drop mechanism;

[0008] The support mechanism comprises a support frame, a sliding groove and a rotating groove, the inner top of the support frame is provided with the rotating groove, the surface of the support frame is provided with the sliding groove on the opposite side, the side of the support frame is fixedly provided with the installation and removal mechanism, the anti-falling mechanism comprises a lower roller, a first rotating rod, a sliding block, a connecting rod, a mounting block, a rotating bearing, an upper roller and a second rotating rod, the opposite positions of the side of the support frame are provided with the mounting block, the rotating bearing is mounted in the mounting block and the second rotating rod is movably connected to the rotating bearing, the upper roller is sleeved on the outer periphery of the second rotating rod, the connecting rod is fixedly connected to the bottom of the mounting block and the end of the connecting rod is fixedly connected with the sliding block, the sliding block is inserted into the sliding groove, and the first rotating rod is mounted between the ends of the connecting rod and the lower roller is sleeved on the outer periphery of the first rotating rod.

[0009] Further, the installation and removal mechanism comprises a plug-in groove pipe, a positioning groove, a cross rod, a positioning rod, a rotating column, a middle vertical rod, an edge vertical rod, a spring and a positioning block, the side of the support frame is provided with the plug-in groove pipe, the positioning groove is formed on the surface of the plug-in groove pipe on the two sides, the middle vertical rod is detachably connected to the plug-in groove pipe, the end of the middle vertical rod is fixedly connected with the cross rod, the spring is mounted on the surface of the middle vertical rod at the middle position on the two sides and the edge vertical rod is movably connected to the spring, and the positioning block is fixedly connected to the side of the edge vertical rod away from the middle vertical rod and is inserted into the positioning groove; the installation and removal mechanism composed of the plug-in groove pipe, the positioning groove, the cross rod, the middle vertical rod, the edge vertical rod, the spring and the positioning block can realize the quick installation and removal of the anti-falling mechanism, and the cleaning of the anti-falling mechanism is facilitated; when it is necessary to prevent the steel wire rope from falling out of the groove, the edge vertical rod is pressed to drive the rotating column to rotate at the two ends of the cross rod, the edge vertical rod is compressed, then the middle vertical rod is inserted into the plug-in groove pipe, the spring provides a reverse elastic force to the edge vertical rod, the positioning block fixedly connected to the edge vertical rod is clamped and fixed with the positioning groove, and when it is necessary to remove, the positioning block is pressed to separate the positioning block from the positioning groove, and then the middle vertical rod is separated from the plug-in groove pipe.

[0010] Further, the end of the edge vertical rod away from the cross rod is fixedly connected with the rotating column, and the rotating column is inserted into the cross rod at the two ends and penetrates through the upper and lower ends of the cross rod; the end of the edge vertical rod is connected with the cross rod through the rotating column, so that the edge vertical rod can rotate within a certain angle around the rotating column during use.

[0011] Further, the cross rod is fixedly connected with the positioning rod on the surface, and the mounting block is fixed to the surface of the positioning rod; the positioning rod on the surface of the cross rod plays a connecting role between the cross rod and the mounting block.

[0012] Further, the pulley mechanism comprises a rotating rod, a pulley and a limiting block, the rotating rod is installed between the support frames, the pulley is sleeved with the rotating rod, and the limiting block is arranged at the positions on both sides of the pulley outside the rotating rod.

[0013] Compared with the prior art, the utility model has the advantages that: through the cooperation of the anti-off mechanism composed of the lower roller, the first rotating rod, the sliding block, the connecting rod, the mounting block, the rotating bearing, the upper roller and the second rotating rod and the support mechanism composed of the support frame, the sliding groove, the rotating groove and the mounting and dismounting mechanism, when the steel wire rope deviates from the sliding groove of the pulley when being pulled, the upper roller can block the steel wire rope from coming out, the second rotating rod is movably connected with the rotating bearing, the upper roller is rotatably connected with the rotating bearing, the steel wire rope touching the upper roller can drive the upper roller to rotate, and the upper roller and the steel wire rope are in rolling friction, so that the damage of the steel wire rope caused by sliding friction is avoided, the lower roller is rotatably connected with the connecting rod through the first rotating rod, when the steel wire rope deviates from the lower roller, the lower roller can limit the movement of the steel wire rope, and the steel wire rope touching the lower roller can also drive the lower roller to rotate, so that the steel wire rope can be prevented from deviating from the groove; the mounting and dismounting mechanism composed of the insertion groove pipe, the positioning groove, the cross rod, the positioning rod, the rotating column, the middle vertical rod, the side vertical rod, the spring and the positioning block can realize the quick mounting and dismounting of the anti-off mechanism, and the anti-off mechanism can be conveniently cleaned, when it is necessary to prevent the steel wire rope from deviating from the groove, the side vertical rod is pressed to drive the rotating column to rotate at the two ends of the cross rod, the side vertical rod is compressed, the middle vertical rod is inserted into the insertion groove pipe, the spring provides a reverse elastic force to the side vertical rod, the positioning block fixedly connected with the side vertical rod is clamped and fixed with the positioning groove, and when it is necessary to dismount, the positioning block is pressed to disengage from the positioning groove, and then the middle vertical rod is disengaged from the insertion groove pipe. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the anti-off structure of the fixed pulley steel wire rope of the crown block.

[0015] Figure 2 It is a support mechanism structure schematic view of the anti-off structure of the fixed pulley steel wire rope of the crown block.

[0016] Figure 3 It is a pulley mechanism structure schematic view of the anti-off structure of the fixed pulley steel wire rope of the crown block.

[0017] Figure 4 It is an anti-off mechanism structure schematic view of the anti-off structure of the fixed pulley steel wire rope of the crown block.

[0018] Figure 5 It is a mounting and dismounting mechanism structure schematic view of the anti-off structure of the fixed pulley steel wire rope of the crown block.

[0019] In the figure: 1, support mechanism; 11, support frame; 12, sliding groove; 13, rotating groove; 14, installation and disassembly mechanism; 141, plug-in groove pipe; 142, positioning groove; 143, cross rod; 144, positioning rod; 145, rotating column; 146, middle vertical rod; 147, side vertical rod; 148, spring; 149, positioning block; 2, pulley mechanism; 21, rotating rod; 22, pulley; 23, limiting block; 3, steel wire rope; 4, anti-falling mechanism; 41, lower roller; 42, No. 1 rotating rod; 43, sliding block; 44, connecting rod; 45, mounting block; 46, rotating bearing; 47, upper roller; 48, No. 2 rotating rod. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] As Figures 1-5 shown, a crown block fixed pulley steel wire rope anti-falling structure, including support mechanism 1, the inner wall of support mechanism 1 is provided with pulley mechanism 2, the surface of pulley mechanism 2 is provided with steel wire rope 3, the upper end surface of support mechanism 1 is provided with anti-falling mechanism 4;

[0022] The support mechanism 1 includes a support frame 11, a sliding groove 12 and a rotating groove 13, the inner top of the support frame 11 is provided with a rotating groove 13, the surface of the support frame 11 is provided with a sliding groove 12 on the opposite side, the side of the support frame 11 is fixedly provided with an installation and disassembly mechanism 14, the anti-falling mechanism 4 includes a lower roller 41, a No. 1 rotating rod 42, a sliding block 43, a connecting rod 44, a mounting block 45, a rotating bearing 46, an upper roller 47 and a No. 2 rotating rod 48, the opposite positions of the side edges of the support frame 11 are provided with mounting blocks 45, the rotating bearings 46 are installed in the mounting blocks 45 and the No. 2 rotating rods 48 are movably connected to the rotating bearings 46, the upper rollers 47 are sleeved on the outer periphery of the No. 2 rotating rods 48, the connecting rods 44 are fixedly connected to the bottoms of the mounting blocks 45 and the sliding blocks 43 are fixedly connected to the ends of the connecting rods 44, the sliding blocks 43 are inserted into the sliding grooves 12, the No. 1 rotating rods 42 are installed between the ends of the connecting rods 44 and the lower rollers 41 are sleeved on the outer periphery of the No. 1 rotating rods 42.

[0023] The dismounting mechanism 14 comprises a plug-in slot pipe 141, a positioning slot 142, a cross bar 143, a middle vertical rod 146, an edge vertical rod 147, a spring 148 and a positioning block 149, the plug-in slot pipe 141 is arranged on the side of the support frame 11, the plug-in slot pipe 141 is provided with the positioning slot 142 on both sides of the surface, the plug-in slot pipe 141 is detachably connected with the middle vertical rod 146, the end of the middle vertical rod 146 is fixedly connected with the cross bar 143, the middle vertical rod 146 is provided with the spring 148 on both sides of the surface, the edge vertical rod 147 is movably connected with the spring 148, the edge vertical rod 147 is fixedly connected with the positioning block 149 which is inserted into the positioning slot 142; the dismounting mechanism 14 composed of the plug-in slot pipe 141, the positioning slot 142, the cross bar 143, the positioning rod 144, the rotating column 145, the middle vertical rod 146, the edge vertical rod 147, the spring 148 and the positioning block 149 can realize the quick installation and dismounting of the anti-falling mechanism 4, and is convenient for cleaning the anti-falling mechanism 4; when it is needed to prevent the steel wire rope 3 from falling out of the slot, the edge vertical rod 147 is pressed, the rotating column 145 is rotated at both ends of the cross bar 143, the edge vertical rod 147 is compressed, the middle vertical rod 146 is inserted into the plug-in slot pipe 141, the spring 148 provides a reverse elastic force to the edge vertical rod 147, the positioning block 149 fixedly connected with the edge vertical rod 147 is clamped and fixed with the positioning slot 142, when it is needed to dismount, the positioning block 149 is pressed, the positioning block 149 is separated from the positioning slot 142, and then the middle vertical rod 146 is separated from the plug-in slot pipe 141.

[0024] The end of the edge vertical rod 147 is fixedly connected with the rotating column 145, the rotating column 145 is inserted into the cross bar 143, and the end of the rotating column 145 penetrates through the upper and lower ends of the cross bar 143, the cross bar 143 is fixedly connected with the positioning rod 144, and the mounting block 45 is fixed to the surface of the positioning rod 144; the end of the edge vertical rod 147 is connected with the cross bar 143 through the rotating column 145, so that the edge vertical rod 147 can rotate within a certain angle around the rotating column 145 during use, and the positioning rod 144 on the surface of the cross bar 143 plays a connecting role between the cross bar 143 and the mounting block 45.

[0025] The pulley mechanism 2 comprises a rotating rod 21, a pulley 22 and a limiting block 23, the rotating rod 21 is installed between the support frames 11, the pulley 22 is sleeved on the outer periphery of the rotating rod 21, and the limiting block 23 is arranged at both sides of the pulley 22 on the outer periphery of the rotating rod 21; the pulley 22 on the outer periphery of the rotating rod 21 plays a bearing role for the steel wire rope 3, and the limiting block 23 limits the position of the pulley 22.

[0026] It should be noted that the utility model discloses a kind of overhead travelling crane fixed pulley steel wire rope anti-drop structure, when using, by the anti-drop mechanism 4 of the lower roller 41, No. 1 rotating rod 42, sliding block 43, connecting rod 44, mounting block 45, rotating bearing 46, upper roller 47, No. 2 rotating rod 48 composition and the support mechanism 1 of the support frame 11, sliding slot 12, rotating groove 13, dismounting mechanism 14 composition two mutual cooperation, when appearing cable-stayed, steel wire rope 3 can deviate from the sliding slot 12 of pulley 22, upper roller 47 can block steel wire rope 3 and outwardly drop out, simultaneously No. 2 rotating rod 48 is movably connected with rotating bearing 46, and then upper roller 47 is rotatable with rotating bearing 46, and steel wire rope 3 touches upper roller 47 to drive upper roller 47 to rotate, and between the two become rolling friction, avoid the damage of sliding friction to steel wire rope 3, and lower roller 41 is rotatably connected with connecting rod 44 by No. 1 rotating rod 42, when lower steel wire rope 3 is separated, lower roller 41 will limit the movement of steel wire rope 3, and steel wire rope 3 also drives lower roller 41 to rotate when touching lower roller 41, which can further avoid the off-track of steel wire rope 3;Dismounting mechanism 14, which is composed of plug-in groove pipe 141, positioning groove 142, cross bar 143, positioning rod 144, rotating column 145, middle vertical rod 146, side vertical rod 147, spring 148 and positioning block 149, can realize the quick installation and dismounting of anti-drop mechanism 4, and facilitate the cleaning of anti-drop mechanism 4, when it is necessary to prevent the off-track of steel wire rope 3, only need to press side vertical rod 147, make side vertical rod 147 drive rotating column 145 to rotate at the two ends of cross bar 143, and then make side vertical rod 147 compress spring 148, then middle vertical rod 146 is inserted into plug-in groove pipe 141, then spring 148 provides a reverse elastic force to side vertical rod 147, so that positioning block 149 fixedly connected with side vertical rod 147 is clamped and fixed with positioning groove 142, when it is necessary to dismount, only need to press positioning block 149, make positioning block 149 and positioning groove 142 disengage, then make middle vertical rod 146 disengage from plug-in groove pipe 141.

[0027] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A crown pulley steel wire rope anti-off structure of a crown block, comprising a supporting mechanism (1), characterized in that: The inner wall of the support mechanism (1) is provided with a pulley mechanism (2), the surface of the pulley mechanism (2) is provided with a steel wire rope (3), and the upper end surface of the support mechanism (1) is provided with an anti-off mechanism (4); The support mechanism (1) comprises a support frame (11), a sliding groove (12) and a rotating groove (13), the inner top of the support frame (11) is provided with a rotating groove (13), the surface of the support frame (11) is provided with a sliding groove (12) on the opposite side, and the side of the support frame (11) is fixedly provided with an installation and removal mechanism (14); the anti-off mechanism (4) comprises a lower roller (41), a No. 1 rotating rod (42), a sliding block (43), a connecting rod (44), a mounting block (45), a rotating bearing (46), an upper roller (47) and a No. 2 rotating rod (48), the mounting block (45) is mounted on the opposite positions of the side of the support frame (11), the rotating bearing (46) is mounted in the mounting block (45) and the No. 2 rotating rod (48) is movably connected with the rotating bearing (46), the upper roller (47) is sleeved on the outer periphery of the No. 2 rotating rod (48), the connecting rod (44) is fixedly connected to the bottom of the mounting block (45) and the end of the connecting rod (44) is fixedly connected with the sliding block (43), the sliding block (43) is inserted into the sliding groove (12), and the No. 1 rotating rod (42) is mounted between the ends of the connecting rod (44) and the lower roller (41) is sleeved on the outer periphery of the No. 1 rotating rod (42).

2. The structure for preventing the wire rope from being detached from the fixed pulley of the head sheave according to claim 1, characterized in that: The installation and removal mechanism (14) comprises a plug-in groove pipe (141), a positioning groove (142), a cross rod (143), a middle vertical rod (146), a side vertical rod (147), a spring (148) and a positioning block (149), the side of the support frame (11) is provided with the plug-in groove pipe (141), the plug-in groove pipe (141) is provided with the positioning groove (142) on the two sides of the surface, the middle vertical rod (146) is detachably connected in the plug-in groove pipe (141), the end of the middle vertical rod (146) is fixedly connected with the cross rod (143), the spring (148) is mounted on the middle position of the surface of the middle vertical rod (146) and the side vertical rod (147) is movably connected with the spring (148), and the positioning block (149) is fixedly connected to the side of the surface of the side vertical rod (147) away from the middle vertical rod (146) and is inserted into the positioning groove (142).

3. The head sheave wire rope anti-disengagement structure of claim 2, wherein: The side vertical rod (147) is fixedly connected with the rotating column (145) at one end of the cross rod (143), and the rotating column (145) is inserted into the two ends of the cross rod (143) and penetrates through the upper and lower ends of the cross rod (143).

4. The head sheave wire rope anti-disengagement structure of claim 2, wherein: The cross rod (143) is fixedly connected with the positioning rod (144) on the surface, and the mounting block (45) is fixed to the surface of the positioning rod (144).

5. The head sheave wire rope anti-disengagement structure of claim 1, wherein: The pulley mechanism (2) comprises a rotating rod (21), a pulley (22) and a limiting block (23), the rotating rod (21) is mounted between the support frames (11), the pulley (22) is sleeved on the outer periphery of the rotating rod (21), and the limiting block (23) is arranged at the positions on the two sides of the outer periphery of the rotating rod (21).

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