Heavy hammer protection device installed on crane steel wire rope

Abstract

The utility model discloses a heavy hammer protection device installed on a crane steel wire rope, and relates to the technical field of heavy hammer protection. The heavy hammer protection device installed on the crane steel wire rope comprises a heavy hammer body and a through hole, wherein the through hole is formed in the middle of the heavy hammer body in the vertical direction and allows the crane steel wire rope to penetrate. The at least one ball group comprises a plurality of balls, the plurality of balls are embedded in the inner side wall of the through hole of the heavy hammer body, and the surfaces of the plurality of balls are tangent to the steel wire rope. The rolling balls are embedded in the inner side wall of the through hole of the heavy hammer body, the steel wire rope penetrates through the rolling balls, the periphery of the steel wire rope is tangent to the rolling balls, in the ascending process of the steel wire rope, the rolling balls are driven to relatively roll on the inner wall of the heavy hammer body, and sliding friction force between the steel wire rope and the heavy hammer body is converted into rolling friction force; and when the angle of the steel wire rope is too large, the heavy hammer can still accurately reset the switch, so that false alarm or failure is avoided, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heavy hammer protection technical field, concretely relates to a heavy hammer protection device installed on the steel wire rope of the travelling crane. BACKGROUND

[0002] The heavy hammer protection device is mainly designed for the last layer protection device of the limit position of the grab bucket travelling crane, if the rising position is too high during the rising process of the grab bucket, the grab bucket will collide with the beam of the travelling crane, thereby damaging the travelling crane and the grab bucket and causing safety accidents.

[0003] The heavy hammer general method is to install the heavy hammer on the steel wire rope, there is a hole in the middle of the heavy hammer, the hole passes through the steel wire rope of the grab bucket, then the heavy hammer is connected with the switch through the steel wire rope, the switch is opened by the gravity of the heavy hammer, when the grab bucket rises to the upper limit position, the grab bucket will touch the heavy hammer and lift the heavy hammer, the switch resets, and the headstock gear immediately loses power, but due to the large friction between the inner wall of the heavy hammer and the steel wire rope, or the angle of the steel wire rope is too large, the heavy hammer often misreports or fails, thereby failing to play a protection role and affecting the work efficiency. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model embodiment provides a heavy hammer protection device installed on the steel wire rope of the travelling crane to solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model embodiment provides the following technical scheme:

[0006] A heavy hammer protection device installed on the steel wire rope of the travelling crane, comprising:

[0007] A heavy hammer body, a through hole for the steel wire rope of the travelling crane to pass through is formed in the middle of the heavy hammer body in the vertical direction;

[0008] A plurality of ball groups, at least one ball group, the ball group comprises a plurality of balls, the plurality of balls are embedded on the inner side wall of the through hole of the heavy hammer body, and the surfaces of the plurality of balls are tangent to the steel wire rope.

[0009] By setting the balls embedded in the inner side wall of the through hole of the heavy hammer body, the steel wire rope passes through and the periphery of the steel wire rope is tangent to the balls, in the rising process of the steel wire rope, the balls are relatively rolled in the inner wall of the heavy hammer body, the sliding friction force between the steel wire rope and the heavy hammer body is converted into rolling friction force, the friction force between the two is greatly reduced, and when the angle of the steel wire rope is too large, the heavy hammer can still accurately reset the switch, avoiding misreporting or failure and improving work efficiency.

[0010] Optionally, the plurality of balls are arranged in a circumferential array on the inner side wall of the heavy hammer body.

[0011] By uniformly distributing the balls in the circumference of the heavy hammer body, the friction between the steel wire rope and the heavy hammer body can be reduced in any direction, thereby achieving the protection effect.

[0012] Optionally, the heavy hammer body is in an axial split structure.

[0013] The first hammer body and the second hammer body are provided with a first semicylindrical groove and a second semicylindrical groove respectively, and the first semicylindrical groove and the second semicylindrical groove form the through hole when the first hammer body and the second hammer body are spliced.

[0014] The first hammer body and the second hammer body are detachably fixed and connected through the first fixing assembly.

[0015] By setting the heavy hammer body in an axial split structure of the first hammer body and the second hammer body, the first heavy hammer and the second heavy hammer are directly buckled on both sides of the steel wire rope and fixed through the first fixing assembly, thereby forming a complete heavy hammer body without the need to remove the steel wire rope to pass through the through hole, and the original equipment is not affected.

[0016] Optionally, the first hammer body and the second hammer body are in a radial split structure.

[0017] The first hammer body includes a first half hammer body and a second half hammer body, and the first half hammer body is provided with a first limiting groove on the inner side edge of the bottom, and the second half hammer body is provided with a second limiting groove on the inner side edge of the top; the first limiting groove and the second limiting groove form a groove matching the balls when the first half hammer body and the second half hammer body are spliced.

[0018] The second hammer body includes a third half hammer body and a fourth half hammer body, and the third half hammer body is provided with a third limiting groove on the inner side edge of the bottom, and the fourth half hammer body is provided with a fourth limiting groove on the inner side edge of the top; the third limiting groove and the fourth limiting groove form a groove matching the balls when the third half hammer body and the fourth half hammer body are spliced.

[0019] The first half hammer body and the second half hammer body are detachably fixed and connected through the second fixing assembly, and the third half hammer body and the fourth half hammer body are detachably fixed and connected through the third fixing assembly.

[0020] By setting the first hammer body and the second hammer body in a split structure, the first hammer body is split into a first half hammer body and a second half hammer body, the first half hammer body and the second half hammer body are spliced and form a groove at the splicing position to place the balls, the third half hammer body and the fourth half hammer body are spliced and form a groove at the splicing position to place the balls, and the balls are conveniently installed.

[0021] Optionally, the first fixing assembly comprises at least two first fixing bolts, the side wall of the first hammer body is provided with at least two first screw holes in the radial direction, the two first screw holes are symmetrically arranged on the two sides of the first semicircular groove, the second hammer body is provided with second screw holes corresponding to the first screw holes, and the first fixing bolts are threadedly fixed in the first screw holes and the second screw holes.

[0022] By arranging the first fixing bolts, the first fixing bolts can be fixed in the first screw holes and the second screw holes, so that the first hammer body and the second hammer body are fixed, and the weight body is convenient to disassemble and assemble.

[0023] Optionally, the second fixing assembly comprises at least two second fixing bolts, the top end face of the first semihammer body is provided with two third screw holes, the top end face of the second semihammer body is provided with fourth screw holes corresponding to the third screw holes, and the second fixing bolts are threadedly fixed in the third screw holes and the fourth screw holes.

[0024] The third fixing assembly comprises at least two third fixing bolts, the top end face of the third semihammer body is provided with two fifth screw holes, the top end face of the fourth semihammer body is provided with sixth screw holes corresponding to the fifth screw holes, and the third fixing bolts are threadedly fixed in the fifth screw holes and the sixth screw holes.

[0025] By arranging the second fixing bolts, the second fixing bolts can be fixed in the third screw holes and the fourth screw holes, so that the first semihammer body and the second semihammer body are fixed, and the balls between the first semihammer body and the second semihammer body are convenient to install.

[0026] Optionally, the embedded grooves formed by the first limiting groove and the second limiting groove and the embedded grooves formed by the third limiting groove and the fourth limiting groove are consistent in diameter with the balls, and the opening of the embedded grooves is smaller than the diameter of the balls.

[0027] By arranging the diameter of the embedded grooves to be matched with the balls, and arranging the opening of the embedded grooves to be smaller than the diameter of the balls, it can be guaranteed that the balls will not roll out of the embedded grooves due to excessive friction.

[0028] The utility model at least has following beneficial effects:

[0029] The utility model discloses a through setting in the heavy hammer body through -hole inner side wall inserts the ball that can roll, and the steel wire passes through and is tangent with the ball in the four -around of steel wire, in the process of the rise of steel wire, drive the ball in the heavy hammer body inner wall relative rolling, change the sliding friction between steel wire and heavy hammer body into rolling friction, and the friction between both is reduced greatly, and when the angle of steel wire is too big, the heavy hammer still can make the switch reset accurately, avoid false alarm or failure, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate prior art and the utility model, the following will be to the prior art and the utility model embodiment described in the drawings needed to be used briefly introduced. Obviously, the following description in the drawings is only exemplary, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to the provided drawings.

[0031] The structure, proportion, size etc. shown in the specification are merely used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions of the utility model can be implemented, any modification of structure, change of proportion relationship or adjustment of size, under the condition of not affecting the effect and the purpose that the utility model can produce, should still fall in the range that the technology content disclosed in the utility model can cover.

[0032] Figure 1 It is first angle structure schematic diagram for an embodiment of the utility model;

[0033] Figure 2 It is internal perspective structure schematic diagram for an embodiment of the utility model;

[0034] Figure 3 It is second angle explosion structure schematic diagram for an embodiment of the utility model;

[0035] Figure 4 It is third angle explosion structure schematic diagram for an embodiment of the utility model.

[0036] Mark explanation of drawing:

[0037] 1, heavy hammer body; 101, first hammer body; 1011, first half hammer body; 1012, second half hammer body; 1013, first limiting groove; 1014, second limiting groove; 102, second hammer body; 1021, third half hammer body; 1022, fourth half hammer body; 1023, third limiting groove; 1024, fourth limiting groove; 103, first half cylindrical groove; 104, second half cylindrical groove; 2, ball; 3, through hole; 4, first fixing bolt; 5, first screw hole; 6, second screw hole; 7, second fixing bolt; 8, third screw hole; 9, fourth screw hole; 10, third fixing bolt; 11, fifth screw hole; 12, sixth screw hole; 13, hanging ring. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0039] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. The terms "first", "second", "third", "fourth" and the like (if any) in the description of the present application and claims and the above-mentioned drawings are intended to distinguish the objects referred to. For the scheme with time sequence flow, this kind of term expression method should not be understood as describing a specific order or sequence. For the scheme of device structure, this kind of term expression method does not distinguish the importance, position relationship, etc.

[0040] In addition, the terms "include", "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units explicitly listed, but can also include other steps or units inherent to these processes, methods, products or devices, or steps or units added based on further optimization schemes of the present application concept.

[0041] As shown in the figure, it is a heavy hammer protection device mounted on the steel wire rope of the travelling crane disclosed by the present application, comprising: Figures 1-4 The heavy hammer body 1 is provided with a through hole 3 for the steel wire rope to pass through in the vertical direction in the middle part;

[0042] The ball 2 group, at least one ball 2 group, the ball 2 group includes a plurality of balls 2, a plurality of balls 2 are embedded on the inner side wall of the through hole 3 of the heavy hammer body 1, and the surfaces of the plurality of balls 2 are tangent to the steel wire rope.

[0043]

[0044] ​The shape of the heavy hammer body 1 can be a cylindrical structure, or a cuboid structure, and other shapes can also be made according to actual needs, as long as a through hole 3 for passing the steel wire rope is provided in the middle of the heavy hammer body 1, and a group of rolling balls 2 are embedded on the inner wall of the heavy hammer body 1. The group of rolling balls 2 can be provided with one group or multiple groups, and in the embodiment, one group is provided. The group of rolling balls 2 includes multiple rolling balls 2, which are distributed on the side wall of the through hole 3 in the middle of the heavy hammer body 1. The specific distribution and arrangement of the rolling balls 2 are set according to actual needs. In order to ensure that the steel wire rope can reduce friction in any direction of the bending angle, the rolling balls 2 are distributed as much as possible on one circle of the circumferential side wall of the through hole 3, and the connection between the rolling balls 2 and the heavy hammer body 1 is that the rolling balls 2 are embedded on the side wall of the through hole 3 and are relatively fixed, and the rolling balls 2 can rotate in any direction at the fixed position.

[0045] A hanging ring 13 is provided at the top of the heavy hammer body 1, which is used to connect a limit switch and is a conventional setting, which will not be described here.

[0046] In the embodiment, the rolling balls 2 are made of steel balls, and the material of the heavy hammer body 1 can be a conventional material, which will not be described here.

[0047] According to one of the best embodiments, the multiple rolling balls 2 are distributed in a circumferential array on the inner side wall of the heavy hammer body 1.

[0048] The rolling balls 2 are uniformly distributed on the inner wall of the through hole 3, and the spacing between the rolling balls 2 needs to meet the requirement that the steel wire rope does not contact the inner side wall of the through hole 3, so that the steel wire rope can be bent in any direction of the angle and can reduce the friction.

[0049] In the embodiment, the installation of the heavy hammer needs to pass the steel wire rope through the through hole 3 for assembly.

[0050] Further, in another embodiment, in order to facilitate the installation of the heavy hammer body 1 and the steel wire rope, the heavy hammer body 1 can also be provided in an axial split structure.

[0051] The first hammer body 101 and the second hammer body 102 are provided with a first half-cylindrical groove 103 on one side and a second half-cylindrical groove 104 on one side, respectively. The first half-cylindrical groove 103 and the second half-cylindrical groove 104 are formed by splicing the first hammer body 101 and the second hammer body 102, and the multiple rolling balls 2 are distributed in the first half-cylindrical groove 103 and the second half-cylindrical groove 104.

[0052] The first hammer body 101 and the second hammer body 102 are detachably fixedly connected through a first fixing assembly.

[0053] The heavy hammer body 1 is halved into two symmetrical half-cylindrical structures along the plane where the axis is located, and is divided into a first hammer body 101 and a second hammer body 102, and the ball 2 is embedded in the first half-cylindrical groove 103 and the second half-cylindrical groove 104 on the first hammer body 101 and the second hammer body 102;

[0054] In the embodiment, the heavy hammer is installed without passing through the steel wire rope, and only the first hammer body 101 and the second hammer body 102 are buckled together from both sides of the steel wire rope, the steel wire rope is arranged in the through hole 3 formed by the first half-cylindrical groove 103 and the second half-cylindrical groove 104, and then the first hammer body 101 and the second hammer body 102 are fixed through the first fixing assembly, so that the installation of the heavy hammer is completed, and the assembly is convenient, time-saving and labor-saving.

[0055] In a further embodiment, the first hammer body 101 and the second hammer body 102 are arranged in a radial split manner;

[0056] The first hammer body 101 includes a first half hammer body 1011 and a second half hammer body 1012, the bottom inner side edge of the first half hammer body 1011 is provided with a first limiting groove 1013, and the top inner side edge of the second half hammer body 1012 is provided with a second limiting groove 1014; the first limiting groove 1013 and the second limiting groove 1014 form an embedding groove matched with the ball 2 by splicing the first half hammer body 1011 and the second half hammer body 1012;

[0057] The second hammer body 102 includes a third half hammer body 1021 and a fourth half hammer body 1022, the bottom inner side edge of the third half hammer body 1021 is provided with a third limiting groove 1023, and the top inner side edge of the fourth half hammer body 1022 is provided with a fourth limiting groove 1024; the third limiting groove 1023 and the fourth limiting groove 1024 form an embedding groove matched with the ball 2 by splicing the third half hammer body 1021 and the fourth half hammer body 1022;

[0058] The first half hammer body 1011 and the second half hammer body 1012 are detachably fixedly connected through a second fixing assembly, and the third half hammer body 1021 and the fourth half hammer body 1022 are detachably fixedly connected through a third fixing assembly.

[0059] In a further specific embodiment, the specific installation mode of the ball 2 and the heavy hammer body 1 is that the embedding grooves formed by the first limiting groove 1013 and the second limiting groove 1014 and the embedding grooves formed by the third limiting groove 1023 and the fourth limiting groove 1024 have diameters consistent with the ball 2, and the opening of the embedding groove is smaller than the diameter of the ball 2.

[0060] The slots formed by the first limiting slot 1013 and the second limiting slot 1014 and the slots formed by the third limiting slot 1023 and the fourth limiting slot 1024 are set to have a diameter suitable for the ball 2, and the opening of the slots is smaller than the diameter of the ball 2, so that the ball 2 cannot roll out of the slots, and the ball 2 is prevented from being taken out of the slots due to the upward and downward sliding of the steel wire rope.

[0061] In the embodiment, the first hammer body 101 and the second hammer body 102 are further split, the first hammer body 101 is split into two parts along the radial direction, which are the first half hammer body 1011 and the second half hammer body 1012, and the second hammer body 102 is split into two parts along the radial direction, which are the third half hammer body 1021 and the fourth half hammer body 1022. The first hammer body 101 is split into the first half hammer body 1011 and the second half hammer body 1012, and the first limiting slot 1013 and the second limiting slot 1014 are arranged at the upper and lower edges of the first half hammer body 1011 and the second half hammer body 1012, so as to facilitate the installation of the ball 2 in the slots formed by the two parts. Similarly, the third half hammer body 1021 and the fourth half hammer body 1022 are split, and the third limiting slot 1023 and the fourth limiting slot 1024 are arranged on the third half hammer body 1021 and the fourth half hammer body 1022, so as to facilitate the installation of the ball 2 in the slots formed by the two parts.

[0062] In the above embodiment, the specific installation mode of the first hammer body 101 and the second hammer body 102 can be that the first fixing assembly includes at least two first fixing bolts 4, the side wall of the first hammer body 101 is provided with at least two first screw holes 5 along the radial direction, the two first screw holes 5 are symmetrically arranged on the two sides of the first half-cylindrical groove 103, the second hammer body 102 is provided with second screw holes 6 corresponding to the first screw holes 5, and the first fixing bolts 4 are threadedly fixed in the first screw holes 5 and the second screw holes 6.

[0063] By arranging the first screw holes 5 on the first hammer body 101, the first screw holes 5 are provided with at least two, and the two first screw holes 5 are penetrated to the plane side of the first hammer body 101 along the radial direction from the curved surface, and the second screw holes 6 are arranged at the corresponding positions of the second hammer body 102, the first bolt is fixed in the second screw hole 6 through the first screw hole 5, so as to fix the first hammer body 101 and the first hammer body 101.

[0064] A plurality of first fixing assemblies can also be arranged along the axial direction of the first hammer body 101 and the second hammer body 102 to fix the first hammer body 101 and the second hammer body 102, so as to ensure that the assembly of the first hammer body 101 and the second hammer body 102 is more stable.

[0065] In the above embodiment, the second fixing assembly comprises at least two second fixing bolts 7, two third screw holes 8 are formed on the top end face of the first half hammer body 1011, and two fourth screw holes 9 corresponding to the third screw holes 8 are formed on the top end face of the second half hammer body 1012, and the second fixing bolts 7 are threadedly fixed in the third screw holes 8 and the fourth screw holes 9;

[0066] The third fixing assembly comprises at least two third fixing bolts 10, two fifth screw holes 11 are formed on the top end face of the third half hammer body 1021, and two sixth screw holes 12 corresponding to the fifth screw holes 11 are formed on the top end face of the fourth half hammer body 1022, and the third fixing bolts 10 are threadedly fixed in the fifth screw holes 11 and the sixth screw holes 12.

[0067] Similarly, for splitting the first hammer body 101 and the second hammer body 102 into two parts, the first hammer body 101 is split into the first half hammer body 1011 and the second half hammer body 1012, the second hammer body 102 is split into the third half hammer body 1021 and the fourth half hammer body 1022, the second fixing assembly fixes the first half hammer body 1011 and the second half hammer body 1012, and the third fixing assembly fixes the third half hammer body 1021 and the fourth half hammer body 1022, which adopt the same principle as that of assembling the first hammer body 101 and the second hammer body 102, and details are not repeated here.

[0068] The application can make the ball 2 and the grab steel wire rope contact, change the sliding friction into rolling friction, greatly reduce the friction, and ensure normal operation even if the angle of the steel wire rope is large.

[0069] The heavy hammer protection device can not only run stably and reliably, but also effectively protect the equipment and personnel; the device maintenance time and labor cost caused by false reports or collisions can be reduced, and the production efficiency can be improved.

[0070] The above several specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments.

[0071] The technical features of the above embodiments can be combined in any way (as long as the combination of the technical features does not exist contradiction), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; the embodiments not explicitly described should also be considered as the scope of the present application.

[0072] The utility model is described in the above through general description and specific embodiment more specifically and in detail. It should be pointed out that, on the premise of not departing from the utility model concept, obviously can make a number of deformation and improvement to these specific embodiments, and these all belong to the protection scope of the application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. A weight protection device for a travelling wire rope, characterized in that The utility model relates to a heavy hammer body, the middle part of the heavy hammer body is provided with a through hole for the passing of the overhead wire rope in the vertical direction, a plurality of ball groups, at least one ball group, the ball group comprises a plurality of balls, the plurality of balls are embedded on the inner side wall of the through hole of the heavy hammer body, and the surfaces of the plurality of balls are tangent to the wire rope. The plurality of balls are arranged in a circumferential array on the inner side wall of the heavy hammer body. The heavy hammer body is of an axial split structure.

2. A weight protector for a travelling wire rope according to claim 1, characterized in that: The first hammer body is provided with a first semicylindrical groove on one side, the second hammer body is provided with a second semicylindrical groove on one side, the first semicylindrical groove and the second semicylindrical groove form the through hole after the first hammer body and the second hammer body are spliced, and the plurality of balls are arranged in the first semicylindrical groove and the second semicylindrical groove.

3. A weight protector for a travelling wire rope according to claim 1, characterized in that: The first hammer body and the second hammer body are detachably fixedly connected through a first fixing assembly. The first hammer body and the second hammer body are arranged in a radial split structure. The first hammer body comprises a first half hammer body and a second half hammer body, the inner side edge of the bottom of the first half hammer body is provided with a first limiting groove, and the inner side edge of the top of the second half hammer body is provided with a second limiting groove; the first limiting groove and the second limiting groove form a ball-adapted embedding groove after the first half hammer body and the second half hammer body are spliced.

4. A weight protector for a travelling wire rope according to claim 3, characterized in that: The second hammer body comprises a third half hammer body and a fourth half hammer body, the inner side edge of the bottom of the third half hammer body is provided with a third limiting groove, and the inner side edge of the top of the fourth half hammer body is provided with a fourth limiting groove; the third limiting groove and the fourth limiting groove form a ball-adapted embedding groove after the third half hammer body and the fourth half hammer body are spliced. The first half hammer body and the second half hammer body are detachably fixedly connected through a second fixing assembly, and the third half hammer body and the fourth half hammer body are detachably fixedly connected through a third fixing assembly. The first fixing assembly comprises at least two first fixing bolts, the sidewall of the first hammer body is provided with at least two first screw holes in the radial direction, the two first screw holes are symmetrically arranged on the two sides of the first semicylindrical groove, the second hammer body is provided with second screw holes corresponding to the first screw holes, and the first fixing bolts are threadedly fixed in the first screw holes and the second screw holes. The second fixing assembly comprises at least two second fixing bolts, the top end face of the first half hammer body is provided with two third screw holes, the top end face of the second half hammer body is provided with fourth screw holes corresponding to the third screw holes, and the second fixing bolts are threadedly fixed in the third screw holes and the fourth screw holes.

5. A weight protector for a travelling wire rope according to claim 3, characterized in that: The third fixing assembly comprises at least two third fixing bolts, the top end face of the third half hammer body is provided with two fifth screw holes, the top end face of the fourth half hammer body is provided with sixth screw holes corresponding to the fifth screw holes, and the third fixing bolts are threadedly fixed in the fifth screw holes and the sixth screw holes.

6. A weight protector for a travelling wire rope according to claim 4, characterized in that: The embedding grooves formed by the first limiting groove and the second limiting groove and the embedding grooves formed by the third limiting groove and the fourth limiting groove have diameters consistent with the balls, and the diameters of the embedding grooves are smaller than the diameters of the balls. ​ 7. A weight protector for a travelling wire rope according to claim 4, characterized in that: ​

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