A clamp

Abstract

The present invention discloses a clamp, comprising a first operating handle and a claw hand provided on the first operating handle for lifting a workpiece to be clamped; the first operating handle is slidably or rotatably connected to a second operating handle; the end of the second operating handle is provided with a pressure claw for pressing the workpiece to be clamped downward when moving to the top of the claw hand. An operator can clamp and move the workpiece to be clamped, such as a smelting furnace, through the clamp. When grabbing or unloading the smelting furnace, the clamp can quickly take and place the smelting furnace through the claw hand; when clamping and pouring out the molten steel in the smelting furnace, the clamp restrains the smelting furnace through the claw hand and the pressure claw at the same time, ensuring that the smelting furnace is stably fixed in the space defined by the claw hand and the pressure claw during the pitching process of its furnace mouth, thereby ensuring the safety of the operation. The clamp has a light overall weight, a simple structure, and a low cost, and can independently complete the steel placing process without the need to invest in other auxiliary equipment.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical fixture manufacturing, in particular to a fixture. Background Art

[0002] In the laboratory, a smelting device with electromagnetic induction heating principle is usually used to complete the secondary smelting of some metals. In the above process, the smelting furnace of the smelting equipment is small in size, and it is impossible to use the clamping equipment used in the factory in the prior art. The clamping structure currently used is simple and usually only has a basic clamping function. Therefore, the operation convenience is poor and the safety is low, and it is difficult to accurately and quickly complete the steel release operation of the smelting furnace.

[0003] Therefore, how to provide a clamp that is easy to operate manually and can be used to clamp and move the smelting furnace conveniently, quickly, safely and reliably has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] The object of the present invention is to provide a clamp which is easy to operate and has a high fixing strength for a workpiece to be clamped. An operator can ensure that the workpiece to be clamped can be smoothly and safely translated and turned by manipulating the clamp.

[0005] To achieve the above-mentioned purpose, the present invention provides a clamp, including a first operating handle and a claw hand arranged on the first operating handle for lifting the workpiece to be clamped; the first operating handle is slidably or rotatably connected to a second operating handle; the end of the second operating handle is provided with a pressure claw for pressing the workpiece to be clamped downward when moving to the top of the claw hand.

[0006] Preferably, the first operating handle is tubular; the second operating handle includes a rod body penetrating and slidably connected inside the first operating handle; the pressing claw is fixed to the end of the rod body and is located outside the first operating handle.

[0007] Preferably, the second operating handle further includes a handle; the pressure claw and the handle are respectively arranged at two ends of the rod length of the rod body; and the handle is perpendicular to the rod body.

[0008] Preferably, the pressure claw comprises a connecting rod and a pressure rod; the rod length direction of the pressure rod is parallel to the rod length direction of the rod body; and the two ends of the connecting rod are respectively fixedly connected to the rod body and the pressure rod.

[0009] Preferably, a first limiting sliding groove is provided on the tube wall of the first operating handle; and the pressing claw passes through the first limiting sliding groove to the outside of the first operating handle.

[0010] Preferably, the claw is fixed to the middle part of the first operating handle in the length direction.

[0011] Preferably, the lower surface of the pressing claw is specifically an inclined pressing surface which is inclined along the moving direction of the second operating handle and is used for gradually pressing the top surface of the workpiece to be clamped when approaching the workpiece to be clamped.

[0012] Preferably, the claw comprises:

[0013] A hook body used to support and clamp the two opposite sides of the bottom of the workpiece to be clamped;

[0014] A protective member fixed to the hook body and used to surround the peripheral side of the workpiece to be clamped.

[0015] Preferably, the protective member comprises a plurality of rods fixed alternately in the same semi-annular curved surface; the length of the bottom cross bar of the hook body and the diameter of the semi-annular curved surface are both equal to the bottom diameter of the workpiece to be clamped.

[0016] Preferably, the first operating handle is connected to the middle portion of the semi-annular curved surface in the height direction.

[0017] Compared with the above-mentioned background technology, the clamp provided by the present invention includes a first operating handle and a claw hand arranged on the first operating handle for lifting the workpiece to be clamped; the first operating handle is slidably or rotatably connected to a second operating handle; the end of the second operating handle is provided with a pressure claw for pressing the workpiece to be clamped downward when moving to the top of the claw hand.

[0018] The clamp can be used to clamp and move the workpiece to be clamped, such as a smelting furnace. When the clamp is used to grab or unload the smelting furnace, the smelting furnace is mainly constrained and driven to move by the claw hand, which is conducive to the rapid placement of the smelting furnace; when clamping and pouring out the molten steel in the smelting furnace, the smelting furnace is clamped from all sides by the claw hand and the pressure claw to ensure that the smelting furnace is stably fixed between the cavity defined by the claw hand and the pressure claw during the pitching process of the furnace mouth, ensuring the safety of the operation.

[0019] The fixture is light in weight, simple in structure, and easy to operate. It can independently complete the steel placing process without the need for other auxiliary equipment. It can meet the operational needs of pouring molten steel in a small melting furnace, allowing the high-temperature molten steel in the melting furnace to be quickly poured into the mold, achieving safe and efficient pouring of molten steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1A schematic diagram of the structure of the clamp provided by an embodiment of the present invention in a first direction;

[0022] Figure 2 A schematic diagram of the structure of the clamp provided by an embodiment of the present invention in the second direction;

[0023] Figure 3 A schematic diagram of assembling the fixture and the smelting furnace provided in an embodiment of the present invention in a third direction;

[0024] Figure 4 A schematic diagram of assembling the fixture and the smelting furnace provided by an embodiment of the present invention in a fourth direction;

[0025] Figure 5 A schematic diagram of the structure of a first operating handle provided in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the structure of a hook body provided by an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of a gripper provided in an embodiment of the present invention.

[0028] Among them, 01-smelting furnace, 1-first operating handle, 2-claw hand, 21-hook body, 22-protective member, 3-second operating handle, 31-pressure claw, 311-connecting rod, 312-pressure rod, 32-rod body, 33-handle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Please refer to Figures 1 to 7 , Figure 1 A schematic diagram of the structure of the clamp provided by an embodiment of the present invention in a first direction; Figure 2 A schematic diagram of the structure of the clamp provided by an embodiment of the present invention in the second direction; Figure 3 A schematic diagram of assembling the fixture and the smelting furnace provided in an embodiment of the present invention in a third direction; Figure 4 A schematic diagram of assembling the fixture and the smelting furnace provided by an embodiment of the present invention in a fourth direction; Figure 5A schematic diagram of the structure of a first operating handle provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a hook body provided by an embodiment of the present invention; Figure 7 A schematic diagram of the structure of a gripper provided in an embodiment of the present invention.

[0032] The present invention provides a clamp, comprising a first operating handle 1 , a second operating handle 3 , a claw hand 2 arranged on the first operating handle 1 , and a pressing claw 31 arranged on the second operating handle 3 .

[0033] In the clamp, the claw hand 2 is used to lift the workpiece to be clamped, for example, the claw hand 2 is supported on the bottom surface of the workpiece to be clamped or the claw hand 2 is bounded at the bottom of the workpiece to be clamped. At this time, the operator can lift and move the workpiece to be clamped by the claw hand 2 by holding and moving the first operating handle 1. The pressure claw 31 is arranged at the end of the second operating handle 3. When the pressure claw 31 moves with the second operating handle 3 to the top of the claw hand 2, the pressure claw 31 presses down the workpiece to be clamped on the claw hand 2.

[0034] The motion characteristics of the pressure jaw 31 depend on the second operating handle 3. For example, if the second operating handle 3 is translated relative to the first operating handle 1, the pressure jaw 31 approaches and moves away from the claw hand 2 with the motion characteristics of translation, so that when the pressure jaw 31 is translated to the top of the claw hand 2, the workpiece to be clamped in the claw hand 2 is pressed, and when the pressure jaw 31 is away from the top of the claw hand 2, the workpiece to be clamped in the claw hand 2 is released, so that the workpiece to be clamped in the claw hand 2 is convenient to take out from the claw hand 2. If the second operating handle 3 rotates relative to the first operating handle 1, the pressure jaw 31 approaches and moves away from the claw hand 2 with the motion characteristics of rotation.

[0035] The clamp uses the claw hand 2 to lift the workpiece to be clamped and the pressure claw 31 to press the workpiece to be clamped to apply force to the workpiece to be clamped, so as to achieve the positioning and clamping of the workpiece to be clamped in the clamp. As for the size, shape and material of the claw hand 2 and the pressure claw 31, they can be set according to the size, purpose and quality of the workpiece to be clamped.

[0036] Regardless of how the first operating handle 1 and the second operating handle 3 achieve relative movement, in each embodiment provided by the present invention, it is preferred that the first operating handle 1 and the second operating handle 3 are connected to each other, including but not limited to a rotational connection or a sliding connection between the two, so as to facilitate the operator to use the clamp.

[0037] The operator can clamp and move the workpiece to be clamped by the clamp provided by the present invention, for example, clamp and move the smelting furnace 01 as the workpiece to be clamped. When grabbing or unloading the smelting furnace 01, the clamp mainly constrains and drives the smelting furnace 01 to move through the claw hand 2, which is conducive to the rapid placement of the smelting furnace 01 on the site support; when clamping and pouring out the molten steel in the smelting furnace 01, the clamp simultaneously constrains the smelting furnace 01 through the claw hand 2 and the pressure claw 31, so that the smelting furnace 01 is clamped in the space defined by the claw hand 2 and the pressure claw 31, ensuring the safety and operation accuracy of the smelting furnace 01 during the pitching process of its furnace mouth.

[0038] The fixture is light in weight, simple in structure, and low in cost. It can independently complete the steel placing process without the need for other auxiliary equipment. It is easy to operate, safe, and reliable. It can be seen that the fixture is particularly suitable for use in metal smelting working environments such as laboratories, meeting the operational requirements of pouring molten steel in a small smelting furnace 01, allowing the high-temperature molten steel in the smelting furnace 01 to be quickly poured into the mold, achieving efficient molten steel pouring.

[0039] The clamp provided by the present invention is further described below in conjunction with the accompanying drawings and implementation examples.

[0040] In the above embodiment, the first operating handle 1 can be configured as a tubular structure, for example, the first operating handle 1 is a steel tube. With respect to the above-mentioned first operating handle 1, the second operating handle 3 may include a rod body 32 for passing through the first operating handle 1, and the rod body 32 is slidably connected to the first operating handle 1. Of course, the pressing claw 31 of the second operating handle 3 is located outside the first operating handle 1.

[0041] The rod body 32 of the second operating handle 3 can be a solid rod body 32 or a tube body. For easy processing, the second operating handle 3 can be made of a steel bar, for example, the rod body 32 and the pressing claw 31 of the second operating handle 3 can be bent from the same steel bar.

[0042] When the rod body 32 of the second operating handle 3 is inserted into the first operating handle 1, the pressing claw 31 can pass through the pipe opening of the first operating handle 1, or extend from the first position-limiting slide groove provided on the pipe body of the first operating handle 1. In the embodiment provided by the present invention, in order to facilitate restricting the sliding range of the second operating handle 3 relative to the first operating handle 1, the pressing claw 31 passes through the aforementioned first position-limiting slide groove, and the two ends of the first position-limiting slide groove along the length direction of the first operating handle 1 can restrict the movement of the pressing claw 31.

[0043] For the above-mentioned clamp, the assembly method in which the rod body 32 of the second operating handle 3 is inserted into the first operating handle 1 can effectively control the size of the entire clamp, ensure the connection strength between the first operating handle 1 and the second operating handle 3, and simplify the use of the operator.

[0044] Furthermore, in addition to the rod body 32 and the pressure claw 31, the second operating handle 3 may also include a handle 33; the pressure claw 31 and the handle 33 are respectively located at both ends of the rod length of the rod body 32. The aforementioned handle 33 may be perpendicular to the rod body 32, and the operator pushes and pulls the rod body 32 through the handle 33 to achieve the reciprocating sliding of the rod body 32 in the first operating handle 1.

[0045] Likewise, the handle 33 can extend from the pipe opening of the first operating handle 1 , or extend from the second limiting sliding groove provided on the pipe body of the first operating handle 1 .

[0046] For the first operating handle 1 provided with both a first limiting slide groove and a second limiting slide groove, the sliding range of the second operating handle 3 relative to the first operating handle 1 can be constrained by the assembly relationship between the pressure claw 31 and the first limiting slide groove, and can also be constrained by the assembly relationship between the handle 33 and the second limiting slide groove.

[0047] As for the pressure claw 31 used in the present invention, it may include a connecting rod 311 and a pressure rod 312; the connecting rod 311 intersects with the rod body 32 of the second operating handle 3, one end of the connecting rod 311 is fixed to the aforementioned rod body 32, and the other end is fixed to the pressure rod 312, usually connected to one end of the pressure rod 312; the rod length direction of the pressure rod 312 is parallel to the rod length direction of the aforementioned rod body 32. Among them, when the connecting rod 311 is perpendicular to the rod body 32 and the pressure rod 312 respectively, the pressure claw 31 is equivalent to the L-shaped rod body 32.

[0048] As for the gripper used in the present invention, it can be fixed at the middle of the length direction of the first operating handle 1, or in other words, along the length direction of the first operating handle 1, part of the first operating handle 1 is provided on both sides of the claw hand 2. The purpose of this setting is to balance the mass of the first operating handle 1 on both sides of the claw hand 2 with the claw hand 2 as the midpoint, so that the clamp is placed horizontally on the ground to prevent the end of the first operating handle 1 from tilting toward the ground.

[0049] For the first operating handle 1 mentioned above, it can actually include a tubular operating handle and a solid rod-shaped operating handle located on both sides of the claw hand 2. The second operating handle 3 is inserted into and slidably connected to the tubular operating handle to achieve the translation of the pressure claw 31 relative to the claw hand 2; the end of the tubular operating handle away from the claw hand 2 is held by the operator. Therefore, the length of the tubular operating handle is usually large, which can not only meet the use of the clamp in different occasions, but also avoid affecting the operator's use experience due to the excessive temperature of the workpiece to be clamped. As for the solid rod-shaped operating handle, it is mainly used to adjust the mass center of the entire clamp, so its length is smaller than that of the tubular operating handle, so it can be set as a solid structure.

[0050] In order to facilitate operation, in the embodiment provided by the present invention, the lower surface of the pressing claw 31 is inclined, or in other words, the lower surface of the pressing claw 31 is provided with an inclined pressing surface. The inclined pressing surface is inclined along the moving direction of the second operating handle 3 so as to Figure 3 For example, the second operating handle 3 is Figure 3 In the aforementioned structure, since the side of the inclined pressure surface close to the positive direction of the X-axis is farther away from the bottom surface of the gripper 2, when the inclined pressure surface gradually approaches the workpiece to be clamped in the gripper 2 along the positive direction of the X-axis, the inclined pressure surface gradually transitions from the top surface that has not yet contacted the workpiece to be clamped to the top surface that presses the workpiece to be clamped, and in the aforementioned pressing process, the pressure gradually increases.

[0051] In the above embodiment, the structural setting of the pressure jaw 31 can ensure that the workpiece to be clamped is easily and quickly clamped into the space defined by the pressure jaw 31 and the claw hand 2, and can also ensure that the pressure jaw 31 applies a sufficiently large pressure to the workpiece to be clamped, thereby improving the installation strength of the workpiece to be clamped between the pressure jaw 31 and the claw hand 2.

[0052] As for the claw hand 2, it can include a hook body 21 for supporting and clamping two opposite sides of the bottom of the workpiece to be clamped, and a protective member 22 for surrounding the peripheral side of the workpiece to be clamped; wherein the protective member 22 is fixedly connected to the hook body 21.

[0053] The hook body 21 may be in the shape of a bent slender rod; the hook rod portion and the hook tip of the hook body 21 are indirectly opposite to each other and are used to clamp two opposite sides of the bottom of the workpiece to be clamped.

[0054] The guard 22 can be in the shape of a strip or a plate. Compared with the hook 21 that lifts the workpiece to be clamped from bottom to top, the guard 22 stops at the side of the workpiece to be clamped. For example, when the guard 22 is in the shape of a strip, the guard 22 is opposite to the guardrail provided on the side of the workpiece to be clamped. Obviously, no matter whether the guard 22 is in the shape of a strip or a plate, its specific geometric shape should be consistent with the side shape of the workpiece to be clamped.

[0055] Taking the cylindrical melting furnace 01 as an example, the protective member 22 may include a plurality of rods staggered and fixed in the same semi-circular curved surface. The diameter of the semi-circular curved surface is equal to the diameter of the melting furnace 01; at the same time, the length of the bottom cross bar of the hook body 21 is equal to the bottom diameter of the melting furnace 01. Since the diameters of the melting furnace 01 are equal at all places along the height direction, the diameter of the semi-circular curved surface is also equal to the bottom diameter of the melting furnace 01.

[0056] The space defined by the protective member 22 and the hook body 21 exactly matches the size and shape of the smelting furnace 01, so the smelting furnace 01 placed in the protective member 22 and the hook body 21 will not shake along the radial direction of the smelting furnace 01, which is safer and more reliable. At the same time, combined with the pressure applied by the pressure claw 31 to the top surface of the smelting furnace 01, the relative fixation of the smelting furnace 01 and the fixture is fully guaranteed.

[0057] In addition, for the above-mentioned clamp, the first operating handle 1 can be connected to the middle of the height direction of the semi-annular surface. Of course, the height of the pressure claw 31 is not less than the top surface of the aforementioned semi-annular surface to ensure that the pressure claw 31 can apply downward pressure to the smelting furnace 01 in the semi-annular surface.

[0058] In the use of the above-mentioned clamp, the melting furnace 01 as the workpiece to be clamped contains liquid metal. The melting furnace 01 is usually placed on a support with a certain height above the ground, and a certain gap is left in the middle of the support, so that the operator can move the claw 2 of the clamp into the aforementioned gap, so that the hook body 21 is clamped from bottom to top on the two opposite sides of the bottom of the melting furnace 01. In the above process, along the axial direction of the first operating handle 1, the end of the second operating handle 3 with the pressing claw 31 is located on the side of the first operating handle 1 away from the claw 2, leaving the upper part of the claw 2 vacant, so as to facilitate the melting furnace 01 to move into the space defined by the claw 2.

[0059] Once the smelting furnace 01 enters the space defined by the claw 2, the second operating handle 3 is manipulated to move relative to the first operating handle 1, so that the pressure claw 31 approaches the smelting furnace 01 in the claw 2, until the pressure claw 31 tightly presses the top surface of the furnace mouth of the smelting furnace 01, so that the pressure claw 31 buckles the smelting furnace 01 downward. At this time, the smelting furnace 01 is firmly fixed in the fixture under the joint action of the claw 2 and the pressure claw 31, and the operator can move the smelting furnace 01 and tilt the furnace mouth of the smelting furnace 01 by translating and rotating the first operating handle 1, so as to pour the liquid metal in the smelting furnace 01 out of the furnace mouth.

[0060] After the liquid metal in the smelting furnace 01 is poured out, the empty smelting furnace 01 is moved back to the support by using the first operating handle 1. Then the second operating handle 3 is operated to make the pressure claw 31 provided on the second operating handle 3 move away from the claw hand 2 and the smelting furnace 01 in the claw hand 2. Finally, the first operating handle 1 is moved downward from the bottom of the smelting furnace 01 to make the claw hand 2 provided on the first operating handle 1 move downward away from the smelting furnace 01 and the support.

[0061] The above is a detailed introduction to the clamp provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A clamp, characterized in that: The invention comprises a first operating handle (1) and a claw hand (2) arranged on the first operating handle (1) and used to lift a workpiece to be clamped; the first operating handle (1) is slidably connected to a second operating handle (3); the end of the second operating handle (3) is provided with a pressing claw (31) used to press the workpiece to be clamped downward when the second operating handle (3) moves to the upper side of the claw hand (2); The first operating handle (1) is tubular; the second operating handle (3) comprises a rod body (32) which is inserted into and slidably connected to the first operating handle (1); the pressing claw (31) is fixed to the end of the rod body (32) and is located outside the first operating handle (1); The second operating handle (3) further comprises a handle (33); the pressing claw (31) and the handle (33) are respectively arranged at two ends of the rod length of the rod body (32); the handle (33) is perpendicular to the rod body (32); The pressing claw (31) comprises a connecting rod (311) and a pressing rod (312); the length direction of the pressing rod (312) is parallel to the length direction of the rod body (32); the two ends of the connecting rod (311) are respectively fixedly connected to the rod body (32) and the pressing rod (312); The claw hand (2) is fixed to the middle part of the first operating handle (1) in the length direction; The claw hand (2) comprises: A hook body (21) for supporting and clamping two opposite sides of the bottom of the workpiece to be clamped; A protective member (22) fixed to the hook body (21) and used to surround the periphery of the workpiece to be clamped; The lower surface of the pressing claw (31) is specifically an inclined pressing surface which is inclined along the moving direction of the second operating handle (3) and is used for gradually pressing the top surface of the workpiece to be clamped when approaching the workpiece to be clamped; The protective member (22) comprises a plurality of rods fixed in an interlaced manner within the same semi-annular curved surface; the length of the bottom crossbar of the hook body (21) and the diameter of the semi-annular curved surface are both equal to the bottom diameter of the workpiece to be clamped.

2. The clamp according to claim 1, characterized in that: A first limiting sliding groove is provided on the tube wall of the first operating handle (1); the pressing claw (31) passes through the first limiting sliding groove to the outside of the first operating handle (1).

3. The clamp according to claim 1, characterized in that: The first operating handle (1) is connected to the middle part of the semi-annular curved surface in the height direction.

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