Flip spreader

Abstract

The present invention provides a flip hoist, comprising: a lifting unit; a first clamp body, on which an upper clamp portion is provided; a second clamp body, comprising a lower clamp portion and a connecting portion, wherein the lower clamp portion is opposite to the upper clamp portion, and the connecting portion is rotatably connected to the first clamp body; and a first force transmission unit and a second force transmission unit arranged between the lifting unit and the first clamp body. When the lifting unit pulls the first clamp body through the first force transmission unit, the first clamp body rotates in a first direction relative to the connecting portion; when the lifting unit pulls the second clamp body through the second force transmission unit, the first clamp body rotates in a second direction relative to the connecting portion. In the process of the first clamp body rotating relative to the connecting portion, the upper and lower clamp portions arranged relatively move closer to or farther from each other, completing an opening and closing action, thereby achieving the grasping of the workpiece. The overall structure of the flip hoist is simple and light, and can be easily transferred to another position with the help of lifting equipment such as a crane, so that it can operate in a wide range.

Description

Technical Field

[0001] The invention relates to the field of lifting and hoisting, and in particular to a turnover hoist. Background Art

[0002] In the forging industry, it is sometimes necessary to flip the semi-finished or finished workpiece from horizontal to vertical for further processing. For example, in the flange forging process, the blank is in a horizontal state before punching, and after punching, the blank needs to be vertically erected so that the reaming bar can be inserted and then the blank can be expanded.

[0003] At present, the commonly used turning tool is a reclaimer, but the reclaimer is bulky, difficult to move, and can only operate in a small range, which has defects. Summary of the invention

[0004] In order to solve the problem that the turning tool in the prior art can only operate in a small range, the purpose of the present invention is to provide a turning sling.

[0005] The present invention provides the following technical solutions:

[0006] A tipping sling, comprising:

[0007] A lifting unit, used to connect with the lifting equipment;

[0008] A first pliers body, wherein the first pliers body is provided with an upper pliers portion for abutting against an upper surface of a workpiece;

[0009] A second jaw body comprises a lower jaw portion and a connecting portion, wherein the lower jaw portion is opposite to the upper jaw portion, and the connecting portion is rotatably connected to the first jaw body; and

[0010] A first force transmission unit and a second force transmission unit are arranged between the lifting unit and the first clamp body. When the lifting unit pulls the first clamp body through the first force transmission unit, the first clamp body rotates along a first direction relative to the connecting part. When the lifting unit pulls the first clamp body through the second force transmission unit, the first clamp body rotates along a second direction relative to the connecting part.

[0011] As a further optional solution for the overturning sling, the first force transmission unit is detachably connected to the lifting unit, and the bottom end of the first force transmission unit is rotatably connected to the first clamp body;

[0012] The second force transmission unit is connected to the lifting unit, the bottom end of the second force transmission unit is connected to the first clamp body, the second force transmission unit adopts a flexible constraint structure, and the second force transmission unit is relaxed when the first force transmission unit is fixed to the lifting unit;

[0013] The overall center of gravity of the first caliper body and the second caliper body is located between the bottom end of the first force transmission unit and the bottom end of the second force transmission unit.

[0014] As a further optional solution for the overturning sling, the lifting unit includes a guide cylinder, a side wall of the guide cylinder is provided with an elastic pin assembly, the elastic pin assembly includes a lock pin and a spring, a lower surface of the lock pin facing the center of the guide cylinder is provided with a first inclined surface, and the spring drives the lock pin to slide toward the center of the guide cylinder;

[0015] The first force transmission unit includes a guide rod, which is slidably matched with the guide cylinder. A locking piece and an unlocking piece are provided on the guide rod. The locking piece is fixedly connected to the guide rod. A second inclined surface is provided on the side of the locking piece facing away from the unlocking piece. The unlocking piece is slidably matched with the guide rod and is located below the locking piece. A third inclined surface is provided on the side of the unlocking piece facing away from the locking piece.

[0016] As a further optional solution for the flip hanger, a limiting member is provided on the guide rod, and the limiting member is located on a side of the unlocking member facing away from the locking member, and is used to limit the sliding stroke of the unlocking member.

[0017] As a further optional solution for the flip hanger, a groove is provided on a side of the locking member facing the unlocking member, and a protrusion is correspondingly provided on a side of the unlocking member facing the locking member.

[0018] As a further optional solution for the flip sling, the bottom end of the second force transmission unit is located on the side of the bottom end of the first force transmission unit facing away from the upper clamp, and the connecting part is located between the bottom end of the first force transmission unit and the bottom end of the second force transmission unit.

[0019] As a further optional solution for the tilting sling, the second force transmission unit adopts a steel chain.

[0020] As a further optional solution for the flip sling, a stop pin is provided on the first clamp body, and the stop pin is used to limit the range of relative rotation between the first clamp body and the connecting part.

[0021] As a further optional solution for the flip hanger, the upper clamp portion is provided with first anti-slip teeth.

[0022] As a further optional solution for the flip hanger, the lower clamp portion is provided with second anti-slip teeth.

[0023] The embodiments of the present invention have the following beneficial effects:

[0024] When the lifting unit pulls the first clamp body through the first force transmission unit, the first clamp body rotates relative to the connection part in the first direction; when the lifting unit pulls the second clamp body through the second force transmission unit, the first clamp body rotates relative to the connection part in the second direction. During the rotation of the first clamp body relative to the connection part, the upper and lower clamp parts arranged relatively move closer to or away from each other to complete the opening and closing action, thereby achieving the grasping of the workpiece. The overall structure of the flip sling is simple and light, and it can be easily transferred with the help of lifting equipment such as a crane, so that it can operate in a large range.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The overall structural schematic diagram of the overturning hanger provided in Embodiment 1 of the present invention is shown;

[0028] Figure 2 A schematic diagram of the structure of the flip hanger provided in Example 1 of the present invention when grabbing a workpiece is shown;

[0029] Figure 3 A schematic diagram of the structure of the overturning hanger provided in Embodiment 1 of the present invention after the workpiece is overturned is shown;

[0030] Figure 4 The overall structural schematic diagram of the overturning sling provided by Embodiment 2 of the present invention is shown;

[0031] Figure 5 A schematic diagram of the structure of the flip hanger provided in Example 2 of the present invention when grabbing a workpiece is shown;

[0032] Figure 6 A schematic diagram of the structure of the overturning hanger provided in Embodiment 2 of the present invention after the workpiece is overturned is shown;

[0033] Figure 7 A schematic diagram showing the connection relationship between the guide cylinder and the guide rod in the flip hanger provided in Example 2 of the present invention is shown.

[0034] Description of main component symbols:

[0035] 100-lifting unit; 110-guide cylinder; 120-elastic pin assembly; 121-lock housing; 122-lock pin; 123-spring; 130-lifting ring; 140-sleeve; 141-connecting plate; 200-first clamp body; 210-upper clamp part; 211-first anti-slip tooth; 220-stop pin; 300-second clamp body; 310-lower clamp part; 311-second anti-slip tooth; 320-connecting part; 330-first pin shaft; 400-first force transmission unit; 410-guide rod; 411-second pin shaft; 420-locking piece; 421-groove; 430-unlocking piece; 431-bump; 440-limiting piece; 500-second force transmission unit; 510-third pin shaft; 600-workpiece; 700-workbench; 800-support block. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] In the forging industry, it is sometimes necessary to flip semi-finished or finished workpieces from horizontal to vertical for further processing. The commonly used flipping tool is the reclaimer, but the reclaimer is large in size and complex in structure. On the one hand, the reclaimer is difficult to move and can only operate in a small range; on the other hand, the reclaimer requires a lot of structural transmission coordination to complete the grabbing and flipping actions, which is not flexible enough and has low work efficiency. In addition, when using the reclaimer to flip the workpiece, slippage often occurs, which is unsafe.

[0042] Example 1

[0043] Please also read Figures 1 to 3 The present embodiment provides a flip hanger for flipping a semi-finished product or a finished product workpiece 600 from horizontal to vertical. The flip hanger includes a lifting unit 100, a first clamp body 200, a second clamp body 300, a first force transmission unit 400 and a second force transmission unit 500.

[0044] A lifting ring 130 is provided at the top of the lifting unit 100, and the lifting ring 130 is hooked with the hook of the lifting equipment, and then lifted by the lifting equipment.

[0045] The first pliers body 200 is dovetail-shaped, and an upper pliers portion 210 is disposed at one end thereof. The second pliers body 300 is composed of a lower pliers portion 310 and a connecting portion 320, wherein the lower pliers portion 310 is opposite to the upper pliers portion 210, one end of the connecting portion 320 is integrally formed with the lower pliers portion 310, and the other end is rotatably connected to the first pliers body 200 through a first pin shaft 330. In addition, the connecting line between the upper pliers portion 210 and the lower pliers portion 310 is perpendicular to the axis of the first pin shaft 330. When the first pliers body 200 and the connecting portion 320 rotate relative to each other, the upper pliers portion 210 and the lower pliers portion 310 move closer to or away from each other, completing the opening and closing action.

[0046] The first force transmission unit 400 and the second force transmission unit 500 are both used to connect the lifting unit 100 and the first clamp body 200 , and transmit the traction force applied to the lifting unit 100 by the lifting equipment to the first clamp body 200 .

[0047] When the lifting unit 100 pulls the first clamp body 200 through the first force transmission unit 400, the first clamp body 200 rotates in the first direction relative to the connection part 320. When the lifting unit 100 pulls the first clamp body 200 through the second force transmission unit 500, the first clamp body 200 rotates in the second direction relative to the connection part 320.

[0048] Take the example of the flip hanger grabbing the workpiece 600 from the left side of the workpiece 600:

[0049] The upper jaw 210 is located at the right end of the first jaw body 200, and the lower jaw 310 is located on the right side of the connecting portion 320. The counterclockwise direction is the first direction, and the clockwise direction is the second direction. The lifting unit 100 first pulls the first jaw body 200 through the first force transmission unit 400, so that the first jaw body 200 rotates counterclockwise relative to the connecting portion 320, thereby causing the upper jaw 210 and the lower jaw 310 to move away from each other, so that they can be easily caught on the workpiece 600. The lifting unit 100 then pulls the first jaw body 200 through the second force transmission unit 500, so that the first jaw body 200 rotates clockwise relative to the connecting portion 320, thereby causing the upper jaw 210 and the lower jaw 310 to move closer to each other and grasp the workpiece 600. At this time, the lifting equipment continues to pull the lifting unit 100 upward, and the left side of the workpiece 600 can be gradually raised until the workpiece 600 is flipped to a vertical position.

[0050] The overall structure of the flip sling is simple and light. On the one hand, it can be easily moved with the help of lifting equipment such as a crane, so that it can operate in a large range; on the other hand, the upper jaw 210 and the lower jaw 310 can be controlled to open and close by only alternately transmitting traction force by the first force transmission unit 400 and the second force transmission unit 500. The operation is flexible, and the workpiece 600 can be quickly grasped and released, with high work efficiency.

[0051] In addition, the first pliers body 200 and the second pliers body 300 form a lever structure. When the upper pliers part 210 abuts against the upper surface of the workpiece 600, the first pliers body 200 rotates clockwise with the contact part between the upper pliers part 210 and the workpiece 600 as a fulcrum, and pulls the lower pliers part 310 upward through the connecting part 320 until the lower pliers part 310 abuts against the lower surface of the workpiece 600. In the process of overcoming the gravity of the workpiece 600 and lifting the left side of the workpiece 600, the traction force on the second force transmission unit 500 makes the upper pliers part 210 and the lower pliers part 310 tightly buckled on the workpiece 600, and the workpiece 600 is not easy to slip off, which is safer.

[0052] Example 2

[0053] Please also read Figures 4 to 7 The present embodiment provides a flip sling, which can be used with a lifting device to flip a semi-finished product or a finished workpiece 600 from horizontal to vertical. The flip sling includes a lifting unit 100, a first clamp body 200, a second clamp body 300, a first force transmission unit 400 and a second force transmission unit 500.

[0054] A lifting ring 130 is provided at the top of the lifting unit 100. When in use, the lifting ring 130 is hooked on the hook of the lifting equipment, and the lifting equipment can lift the lifting unit 100.

[0055] The first clamp body 200 is dovetail-shaped, and one end of the first clamp body 200 is provided with an upper clamp portion 210. When in use, the upper clamp portion 210 abuts against the upper surface of the workpiece 600, and due to the positive pressure therebetween, there is a certain static friction between the upper clamp portion 210 and the workpiece 600 to overcome part of the gravity of the workpiece 600.

[0056] Furthermore, the lower surface of the upper jaw 210 is provided with a first anti-slip tooth 211, which can greatly increase the dynamic friction coefficient between the upper jaw 210 and the workpiece 600, thereby increasing the maximum static friction between the upper jaw 210 and the workpiece 600, and preventing the workpiece 600 from slipping when grasping.

[0057] The second jaw body 300 is composed of a lower jaw portion 310 and a connecting portion 320, wherein the lower jaw portion 310 is opposite to the upper jaw portion 210. When in use, the lower jaw portion 310 abuts against the lower surface of the workpiece 600, and due to the positive pressure between the two, there is also a certain static friction between the lower jaw portion 310 and the workpiece 600 to overcome part of the gravity of the workpiece 600.

[0058] Furthermore, the upper surface of the lower jaw 310 is provided with second anti-slip teeth 311, which can greatly increase the dynamic friction coefficient between the lower jaw 310 and the workpiece 600, thereby increasing the maximum static friction between the lower jaw 310 and the workpiece 600, and preventing the workpiece 600 from slipping when grasping.

[0059] One end of the connecting portion 320 is integrally formed with the lower jaw portion 310, and the other end is rotatably connected to the first jaw body 200 through the first pin 330. The connecting line of the upper jaw portion 210 and the lower jaw portion 310 is perpendicular to the axis of the first pin 330. When the first jaw body 200 and the connecting portion 320 rotate relative to each other, the upper jaw portion 210 and the lower jaw portion 310 move closer to or away from each other to complete the opening and closing action.

[0060] The upper jaw 210 and the lower jaw 310 can be more smoothly engaged with the workpiece 600 when opened, and can firmly grasp the workpiece 600 when closed. In order to improve work efficiency and avoid unnecessary work, the relative rotation of the first jaw body 200 and the connecting part 320 needs to be limited within a certain range, so that the workpiece 600 can be smoothly engaged without spending too much time to close the upper jaw 210 and the lower jaw 310.

[0061] Therefore, a stop pin 220 is provided on the first pliers body 200, and the stop pin 220 is located on the side of the first pin shaft 330 facing away from the upper pliers part 210. During the relative rotation of the first pliers body 200 and the connecting part 320, the upper pliers part 210 gradually moves away from the lower pliers part 310, and the stop pin 220 continuously moves toward the connecting part 320 until it abuts against the connecting part 320. At this time, the first pliers body 200 and the connecting part 320 cannot continue to rotate relative to each other in the original direction, and the upper pliers part 210 and the lower pliers part 310 are opened to the maximum angle.

[0062] In addition, the first pliers body 200 and the second pliers body 300 are both forged with high-strength and high-toughness materials with good red hardness to ensure that they have sufficient load-bearing capacity.

[0063] When the first anti-slip teeth 211 are provided on the lower surface of the upper jaw portion 210 and the second anti-slip teeth 311 are provided on the upper surface of the lower jaw portion 310, both are surfacing-welded and polished into ridges.

[0064] The first force transmission unit 400 and the second force transmission unit 500 are both used to connect the lifting unit 100 and the first clamp body 200 to transmit the traction force applied by the lifting equipment to the lifting unit 100 to the first clamp body 200, and the first force transmission unit 400 and the second force transmission unit 500 do not transmit the traction force at the same time.

[0065] Since the second pliers body 300 is rotatably connected to the first pliers body 200, the second pliers body 300 always droops naturally when the lower pliers portion 310 is not in contact with the workpiece 600. When the lifting unit 100 pulls the first pliers body 200 through the first force transmission unit 400, the posture of the first pliers body 200 changes, and it rotates in the first direction relative to the connection portion 320. When the lifting unit 100 pulls the first pliers body 200 through the second force transmission unit 500, the posture of the first pliers body 200 changes, and it rotates in the second direction relative to the connection portion 320.

[0066] The operator changes the connection state between the lifting unit 100 and the first clamp body 200 , so that the first force transmission unit 400 and the second force transmission unit 500 can transmit the traction force alternately, thereby controlling the opening and closing of the upper clamp part 210 and the lower clamp part 310 .

[0067] Further, in order to simplify the operation process, in this embodiment, the first force transmission unit 400 is detachably connected to the lifting unit 100 and is rotatably connected to the first clamp body 200. The second force transmission unit 500 is always connected to the lifting unit 100 and the first clamp body 200, but the second force transmission unit 500 adopts a flexible constraint structure, allowing the lifting unit 100 and the first clamp body 200 to move relative to each other within a range that does not exceed the length of the second force transmission unit 500.

[0068] When the first force transmission unit 400 is fixed to the lifting unit 100, the distance between the lifting unit 100 and the first clamp body 200 is less than the length of the second force transmission unit 500. At this time, the second force transmission unit 500 is relaxed and does not constrain the lifting unit 100 and the first clamp body 200.

[0069] At this time, the operator fixes the first force transmission unit 400 and the lifting unit 100, and the traction force can be transmitted through the first force transmission unit 400. The operator releases the fixed connection between the first force transmission unit 400 and the lifting unit 100, and the traction force can be transmitted through the second force transmission unit 500. The first force transmission unit 400 and the second force transmission unit 500 can be alternately transmitted by simply changing the connection state between the first force transmission unit 400 and the lifting unit 100.

[0070] Specifically, the lifting unit 100 includes a guide cylinder 110. The guide cylinder 110 is a cylinder, and the lifting ring 130 is fully welded to the top of the guide cylinder 110, and stress relief annealing treatment is performed after welding.

[0071] Specifically, the first force transmission unit 400 includes a guide rod 410. The guide rod 410 is circular, and its diameter is equal to the inner diameter of the guide cylinder 110. The middle and upper parts of the guide rod 410 are slidably plugged with the guide cylinder 110, and the two are detachably connected. The bottom end of the guide rod 410 is rotatably connected to the first caliper body 200 through a second pin shaft 411, and the second pin shaft 411 is parallel to the first pin shaft 330.

[0072] Specifically, the second force transmission unit 500 uses a steel chain or a steel chain row. Taking the steel chain as an example, a connecting plate 141 is fixedly provided at the bottom of the outer wall of the guide cylinder 110, and the top of the steel chain is bolted and fixed to the connecting plate 141. The bottom end of the steel chain is rotatably connected to the first caliper body 200 through the third pin 510, and the third pin 510 is parallel to the first pin 330. Since the temperature of the workpiece 600 can reach nearly 1,000 degrees Celsius, the steel chain uses a high-temperature resistant lifting chain.

[0073] When the guide cylinder 110 pulls the first caliper body 200 through the guide rod 410, the second pin 411 bears force on the first caliper body 200, and under the gravity of the first caliper body 200 and the second caliper body 300, the first caliper body 200 swings in the first direction around the second pin 411, thereby rotating in the first direction relative to the connecting portion 320. When the guide cylinder 110 pulls the first caliper body 200 through the steel chain, the third pin 510 bears force on the first caliper body 200, and under the gravity of the first caliper body 200 and the second caliper body 300, the first caliper body 200 swings in the second direction around the third pin 510, thereby rotating in the second direction relative to the connecting portion 320.

[0074] On this basis, the overall center of gravity of the first clamp body 200 and the second clamp body 300 is located between the second pin shaft 411 and the third pin shaft 510, so that the first direction and the second direction are opposite, respectively corresponding to the opening and closing actions of the overturning sling.

[0075] Specifically, the third pin 510 is located on the side of the second pin 411 facing away from the upper jaw portion 210 , that is, the overall center of gravity of the first jaw body 200 and the second jaw body 300 is located on the opposite side of the second pin 411 as the upper jaw portion 210 , and on the same side as the third pin 510 .

[0076] When the second pin 411 bears the force on the first pliers 200, the overall center of gravity of the first pliers 200 and the second pliers 300 moves downward, and the upper pliers 210 tilts upward. In other words, when the first pliers 200 rotates relative to the connecting portion 320 along the first direction, the upper pliers 210 and the lower pliers 310 open.

[0077] When the third pin 510 bears force on the first caliper body 200, the overall center of gravity of the first caliper body 200 and the second caliper body 300 moves downward, and the upper caliper part 210 also sinks. In other words, when the first caliper body 200 rotates relative to the connecting part 320 along the second direction, the upper caliper part 210 and the lower caliper part 310 close.

[0078] Furthermore, the first pin 330 is located between the second pin 411 and the third pin 510 . The second caliper body 300 is used as a counterweight structure on the first caliper body 200 , so that the overall center of gravity of the first caliper body 200 and the second caliper body 300 is located between the second pin 411 and the third pin 510 .

[0079] Furthermore, in order to simplify the operation process, in the present embodiment, the connection and disassembly process between the first force transmission unit 400 and the lifting unit 100 is achieved by their own gravity and the traction force of the lifting equipment, without the need for manual operation by an operator.

[0080] Specifically, a sleeve 140 is welded to the bottom end of the guide cylinder 110, and a connecting plate 141 is fully welded to the side wall of the sleeve 140, connected to the guide cylinder 110 through the sleeve 140, and stress relief annealing is performed after welding. The sleeve 140 is coaxially arranged with the guide cylinder 110, and the inner diameter of the sleeve 140 is larger than the inner diameter of the guide cylinder 110. The side wall of the sleeve 140 is provided with elastic pin assemblies 120 in pairs, and the two elastic pin assemblies 120 are symmetrical about the axis of the sleeve 140.

[0081] The elastic pin assembly 120 includes a lock housing 121, a lock pin 122 and a spring 123. The lock housing 121 is inserted into the sleeve 140 and is fixed to the sleeve 140 by welding. The lock pin 122 is slidably arranged in the lock housing 121 along the radial direction of the sleeve 140, and a first inclined surface is arranged on the lower surface of the end of the lock pin 122 facing the center of the sleeve 140. The spring 123 is sleeved on the lock pin 122 and drives the lock pin 122 to slide toward the center of the sleeve 140.

[0082] Correspondingly, the guide rod 410 is provided with a locking member 420 and an unlocking member 430. The locking member 420 is annular, sleeved on the guide rod 410, and fixed by welding to the guide rod 410. In addition, the locking member 420 is provided with a second inclined surface on one side facing away from the third pin 510.

[0083] Specifically, when manufacturing the first force transmission unit 400, the locking member 420 is first spot welded and positioned on the guide rod 410, and then the reliability of the locking and unlocking actions between the locking member 420 and the elastic pin assembly 120 is tested. After confirmation, the locking member 420 and the guide rod 410 are fully welded and fixed, and the weld foot size is 4-5mm.

[0084] When the lifting equipment lowers the guide cylinder 110, the guide cylinder 110 moves downward relative to the guide rod 410 until the locking pin 122 is pressed on the second inclined surface. The reaction force applied to the locking pin 122 by the second inclined surface is inclined upward, thereby overcoming the elastic force of the spring 123 to drive the locking pin 122 to move away from the guide rod 410. When the locking pin 122 moves below the locking member 420, the spring 123 ejects the locking pin 122. At this time, the lifting equipment pulls the guide cylinder 110 upward, and the guide rod 410 can be lifted by transmitting force through the locking pin 122 and the locking member 420, thereby realizing a fixed connection between the guide cylinder 110 and the guide rod 410 in a specific direction.

[0085] The unlocking member 430 is set in an annular shape and is slidably sleeved on the guide rod 410. Its inner diameter is slightly larger than the diameter of the guide rod 410, and the two are clearance-matched, and the unlocking member 430 is located below the locking member 420. In order to make the unlocking member 430 slide more smoothly on the guide rod 410, a solid lubricant (such as graphite) can be injected between the unlocking member 430 and the guide rod 410 for lubrication. In addition, a third inclined surface is provided on the side of the unlocking member 430 facing away from the locking member 420.

[0086] When the fixed connection between the guide cylinder 110 and the guide rod 410 needs to be released, the guide cylinder 110 is first lowered by the lifting equipment, and the guide cylinder 110 moves downward relative to the guide rod 410 until the first inclined surface on the locking pin 122 presses on the unlocking member 430. At this time, the unlocking member 430 is at the bottom of the sliding stroke and cannot move downward further, so the unlocking member 430 applies an upward reaction force to the locking pin 122, thereby overcoming the elastic force of the spring 123 and driving the locking pin 122 to move away from the guide rod 410 until the locking pin 122 moves to abut against the third inclined surface on the unlocking member 430.

[0087] When the lock pin 122 is pressed on the third inclined surface, an oblique upward pressure is applied to the unlocking member 430, and the component force of the pressure along the axis of the guide rod 410 is greater than the component force of the weight of the unlocking member 430 along the axis of the guide rod 410. At this time, the lifting equipment pulls the guide cylinder 110 upward, and drives the unlocking member 430 to move upward through the lock pin 122 until the unlocking member 430 and the locking member 420 are against each other.

[0088] After the unlocking member 430 is restricted by the locking member 420 and cannot move upward further, the reaction force applied to the locking pin 122 is sufficient to overcome the elastic force of the spring 123 to drive the locking pin 122 to move away from the guide rod 410, so the locking pin 122 slides along the third inclined surface during the process of continuing to move upward. When the locking pin 122 is higher than the top of the third inclined surface, the distance between it and the guide rod 410 is also greater than the thickness of the bottom end of the locking member 420, so the locking pin 122 can smoothly pass over the locking member 420 upward, and the guide cylinder 110 no longer pulls the guide rod 410 upward through the locking pin 122.

[0089] When the locking pin 122 moves to below the unlocking member 430, the unlocking member 430 and the locking member 420 are both accommodated in the sleeve 140. In order to prevent the sleeve 140 from being too long, it is necessary to limit the sliding stroke of the unlocking member 430. Therefore, a limiting member 440 is provided on the guide rod 410.

[0090] The limiting member 440 is located below the unlocking member 430, and the limiting member 440 is sleeved on the guide rod 410 and is welded and fixed to the guide rod 410. When the unlocking member 430 moves to abut against the limiting member 440, it cannot continue to slide downward.

[0091] Furthermore, in order to make the cooperation between the unlocking member 430 and the locking member 420 more stable, an annular groove 421 is provided on the lower surface of the locking member 420, and an annular protrusion 431 is integrally formed on the upper surface of the unlocking member 430. When the unlocking member 430 is lifted by the locking pin 122 and abuts against the locking member 420, the protrusion 431 is embedded in the groove 421.

[0092] When in use, two support blocks 800 are placed on the workbench 700, and the workpiece 600 is placed horizontally on the support blocks 800. Take the example of the flip hanger grabbing the workpiece 600 from the left side of the workpiece 600:

[0093] The upper jaw 210 is located at the right end of the first jaw body 200, and the lower jaw 310 is located on the right side of the connecting portion 320. The counterclockwise direction is the first direction, and the clockwise direction is the second direction. The lifting equipment first lowers the guide cylinder 110, and after the guide cylinder 110 is connected to the guide rod 410, the first jaw body 200 is pulled upward by the guide rod 410, so that the first jaw body 200 rotates counterclockwise relative to the connecting portion 320, thereby moving the upper jaw 210 and the lower jaw 310 away from each other, so that they can be easily clamped on the workpiece 600.

[0094] After the upper jaw 210 is placed on the upper surface of the workpiece 600, the lifting device continues to move the lower guide cylinder 110, and after the locking pin 122 abuts against the third inclined surface, the guide cylinder 110 is lifted, thereby releasing the connection between the guide cylinder 110 and the guide rod 410. The lifting device continues to lift the guide cylinder 110, and pulls the first jaw body 200 through the steel chain, so that the first jaw body 200 rotates clockwise relative to the connecting portion 320, thereby bringing the upper jaw 210 and the lower jaw 310 closer to each other, until the lower jaw 310 is pressed against the lower surface of the workpiece 600, and cooperates with the upper jaw 210 to grasp the workpiece 600. At this time, the lifting device continues to lift the guide cylinder 110 upward, and the left side of the workpiece 600 can be gradually raised until the workpiece 600 is flipped to a vertical position.

[0095] On the one hand, the flip spreader is light enough to be easily moved with the help of a crane or other lifting equipment, so that it can be operated in a wide range. On the other hand, the flip spreader has a simple overall structure, a simple operation process, and flexible control, and can quickly grab and release the workpiece 600, with high work efficiency.

[0096] In addition, the first pliers body 200 and the second pliers body 300 form a lever structure. When the upper pliers part 210 abuts against the upper surface of the workpiece 600, the first pliers body 200 rotates clockwise with the contact part between the upper pliers part 210 and the workpiece 600 as a fulcrum, and pulls the lower pliers part 310 upward through the connecting part 320 until the lower pliers part 310 abuts against the lower surface of the workpiece 600. In the process of overcoming the gravity of the workpiece 600 and lifting the left side of the workpiece 600, the traction force on the steel chain makes the upper pliers part 210 and the lower pliers part 310 tightly buckled on the workpiece 600, and the workpiece 600 is not easy to slip off, which is safer.

[0097] In the process of manufacturing the flip hanger, the first pin shaft 330, the second pin shaft 411 and the third pin shaft 510 are all subjected to quenching and tempering treatment, and the flexibility of relative movement between the components must be ensured during assembly.

[0098] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0099] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0100] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A flip hanger, characterized in that: include: A lifting unit, used to connect with the lifting equipment; A first pliers body, wherein the first pliers body is provided with an upper pliers portion for abutting against an upper surface of a workpiece; A second jaw body, comprising a lower jaw portion and a connecting portion, wherein the lower jaw portion is opposite to the upper jaw portion, and the connecting portion is rotatably connected to the first jaw body; and a first force transmission unit and a second force transmission unit provided between the lifting unit and the first jaw body, wherein when the lifting unit pulls the first jaw body through the first force transmission unit, the first jaw body rotates relative to the connecting portion in a first direction, and when the lifting unit pulls the first jaw body through the second force transmission unit, the first jaw body rotates relative to the connecting portion in a second direction; The first force transmission unit is detachably connected to the lifting unit, and the bottom end of the first force transmission unit is rotatably connected to the first clamp body; The second force transmission unit is connected to the lifting unit, the bottom end of the second force transmission unit is connected to the first clamp body, the second force transmission unit adopts a flexible constraint structure, and the second force transmission unit is relaxed when the first force transmission unit is fixed to the lifting unit; The overall center of gravity of the first caliper body and the second caliper body is located between the bottom end of the first force transmission unit and the bottom end of the second force transmission unit; The first caliper body is provided with a stop pin, and the stop pin is used to limit the relative rotation range of the first caliper body and the connecting part.

2. The flip hanger according to claim 1, characterized in that: The lifting unit comprises a guide cylinder, a side wall of which is provided with an elastic pin assembly, the elastic pin assembly comprises a lock pin and a spring, a lower surface of the lock pin facing the center of the guide cylinder is provided with a first inclined surface, and the spring drives the lock pin to slide toward the center of the guide cylinder; The first force transmission unit includes a guide rod, which is slidably matched with the guide cylinder. A locking piece and an unlocking piece are provided on the guide rod. The locking piece is fixedly connected to the guide rod. A second inclined surface is provided on the side of the locking piece facing away from the unlocking piece. The unlocking piece is slidably matched with the guide rod and is located below the locking piece. A third inclined surface is provided on the side of the unlocking piece facing away from the locking piece.

3. The overturning hanger according to claim 2, characterized in that: A limiting member is arranged on the guide rod, and the limiting member is located at a side of the unlocking member facing away from the locking member, and is used for limiting the sliding stroke of the unlocking member.

4. The overturning hanger according to claim 2, characterized in that: A groove is provided on one side of the locking member facing the unlocking member, and a protrusion is correspondingly provided on one side of the unlocking member facing the locking member.

5. The overturning hanger according to claim 1, characterized in that: The bottom end of the second force transmission unit is located at a side of the bottom end of the first force transmission unit facing away from the upper clamp portion, and the connecting portion is located between the bottom end of the first force transmission unit and the bottom end of the second force transmission unit.

6. The overturning hanger according to claim 1, characterized in that: The second force transmission unit adopts a steel chain.

7. The overturning hanger according to claim 1, characterized in that: The upper jaw portion is provided with first anti-slip teeth.

8. The overturning hanger according to claim 1, characterized in that: The lower jaw portion is provided with second anti-slip teeth.

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