Crucible clamp

Abstract

The utility model relates to the technical field of crucible clamps, and provides a crucible clamp. The clamp comprises a clamping part. Each clamping part comprises two force rods, wherein the upper end of one force rod is rotatably connected with the upper end of the other force rod; the upper ends of the two rotating crank arms are rotationally connected with the lower ends of the two corresponding force rods respectively, and the middle section bending parts of the two rotating crank arms are rotationally connected; the two clamping jaws are arranged oppositely and are respectively connected with the lower ends of the two rotating crank arms; the opposite sides of the two force rods are connected with the two ends of the first elastic accessory correspondingly, and the resilience force outwards applied by the first elastic accessory can be adjusted. According to the clamp provided by the utility model, the first elastic accessory is connected between the two force rods, and the force rods, the rotating crank arms, the clamping jaws and the first elastic accessory are matched, so that the clamping force of the clamping jaws can be adjusted according to the surface of the crucible and the use times in the use process, and the damage rate of the crucible can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to a crucible clamp, in particular to a crucible clamp. Background Art

[0002] During the process of taking the high-temperature crucible out of the graphitization furnace, the graphite crucible is arranged in the graphitization furnace according to certain rules. At present, basically a steel wire rope is wound around the outer wall of the crucible and a crane is used to lift it. Generally, 2 to 4 crucibles are lifted at a time, and the temperature of the crucible out of the furnace cannot be too high. If it is too high, the workers cannot operate it, which poses a safety risk. However, cooling to a low temperature takes a lot of time. Therefore, the main time spent on the graphitization furnace out of the furnace is in the step of lifting the crucible, which results in low production efficiency.

[0003] In order to solve this problem, the industry currently has a clamp designed to clamp multiple crucibles at one time, which is used to clamp the crucibles out of the furnace. However, the clamping effect of the current clamp is not ideal. For example, as shown in the utility model patent with publication number CN219791339U, the existing clamp adopts a curved arm design, and the clamping force is applied to the clamping claw on the curved arm by pulling force, so that the clamping claw approaches and fastens the crucible to complete the clamping. However, with this design, the clamping force of the clamping claw cannot be adjusted, and the more times the crucible is used, the more fragile it is. If the force is not well controlled, it is easy to be crushed, resulting in a high crucible breakage rate. Utility Model Content

[0004] In order to solve the deficiencies of the prior art mentioned in the above background technology, the utility model provides a crucible clamp, and its technical solution is as follows:

[0005] The crucible clamp provided by the utility model comprises a clamping component; each of the clamping components comprises:

[0006] Two force rods, wherein the upper end of one of the force rods is rotatably connected to the upper end of the other force rod;

[0007] Two rotating crank arms, the upper ends of the two rotating crank arms are rotatably connected to the lower ends of the corresponding two force rods, and the middle bending parts of the two rotating crank arms are rotatably connected;

[0008] Two clamping jaws arranged facing each other, the two clamping jaws are respectively connected to the lower ends of the two rotating crank arms;

[0009] Wherein, the two sides of the two force rods facing each other are respectively connected to two ends of the first elastic accessory, and the magnitude of the rebound force applied outward by the first elastic accessory is adjustable.

[0010] In one embodiment, the first elastic accessory includes a threaded rod, a first spring, and two first nuts matching the threaded rod; the two ends of the threaded rod are respectively connected to the two force rods; the first spring and the two first nuts are sleeved on the outside of the threaded rod, and the two first nuts are respectively arranged on the outside of the two ends of the first spring, and the size of the rebound force applied outward by the first elastic accessory is adjusted by adjusting the distance between the two first nuts.

[0011] In one embodiment, it includes a crane boom, a plurality of clamping components arranged below the crane boom, and an axle rod; the upper ends of the two force rods form a first connection portion at their rotatable connection; at the first connection portion, the crane boom and the upper ends of the two force rods of each clamping component are rotatably connected; the middle bending portions of the two rotating crank arms form a second connection portion at their rotatable connection; at the second connection portion, the axle rod is rotatably connected to the two rotating crank arms of each clamping component.

[0012] In one embodiment, a height adjustment component is provided under the crane boom; the height adjustment component includes a mounting block and a hook installed on the mounting portion; the mounting block is rotatably connected to the crane boom, so that when the mounting block freely hangs down under the action of gravity, the hook hooks the shaft rod, and when the mounting block rotates, the hook detaches from the shaft rod; wherein the hook is connected to the mounting block through a distance adjustment member, so that the distance between the hook and the mounting block can be adjusted, so that when the mounting block freely hangs down under the action of gravity, the distance between the hook and the crane boom can be adjusted.

[0013] In one embodiment, the distance adjustment member is a set of mutually matching adjustable bolts and second nuts; a screw hole is provided on the mounting block, and the adjustable bolt and nut are passed through the screw hole on the mounting block, and the bottom end of the adjustable bolt is fixedly connected to the hook.

[0014] In one embodiment, a lifting handle is provided on the side outer wall of the hook.

[0015] In one embodiment, the clamping jaw is detachably connected to the lower end of the rotating crank arm;

[0016] In one embodiment, each of the clamping jaws includes sub-clamping plates distributed on both sides of the rotating crank arm, and the side of the sub-clamping plates facing the crucible is an arc-shaped surface, so that when the clamp clamps the crucible, the arc-shaped surface of the clamping jaw fits tightly against the side wall of the crucible.

[0017] In one embodiment, the clamping jaw is connected to the rotatable shaft at the lower end of the rotating crank arm through a rotation adjustment connection member, so that the clamping jaw cannot rotate along the vertical axis as the axis, and it can rotate along the horizontal axis parallel to the shaft as the axis;

[0018] In one embodiment, the surface of the arc-shaped surface is configured as an anti-slip structural surface; the anti-slip structural surface is provided with a plurality of grooves which are parallel to each other and perpendicular to the vertical direction.

[0019] In one embodiment, two stabilizing rods are further included; a third connection portion is formed at the rotatable connection between the upper end of the rotating crank arm and the corresponding lower end of the force rod; at the third connection portion, the stabilizing rod is rotatably connected to the upper end of the rotating crank arm and the lower end of the force rod of each clamping component.

[0020] In one embodiment, a height adjustment plate is provided below the second connection portion; and the lower surface of the height adjustment plate is a horizontally arranged plane structure.

[0021] Based on the above, compared with the prior art, the crucible clamp provided by the utility model has the following beneficial effects:

[0022] The clamp provided by the utility model connects a first elastic accessory between two force rods. The clamping force of the clamp can be adjusted by cooperating with the force rod, the rotating crank arm, the clamp and the first elastic accessory. During use, the clamping force of the clamp can be adjusted according to the surface of the crucible and the number of times of use. The use of this design can effectively reduce the damage rate of the crucible.

[0023] Other features and beneficial effects of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other beneficial effects of the utility model can be achieved and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions of the components shown in the diagrams unless otherwise specified.

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a clamp provided in one embodiment of the utility model;

[0026] Figure 2 A front view of a clamp provided in one embodiment of the utility model;

[0027] Figure 3 A side view of a clamp provided in one embodiment of the utility model;

[0028] Figure 4 A top view of a clamp provided in one embodiment of the utility model;

[0029] Figure 5 A schematic diagram of the partial structural disassembly of a clamp provided in one embodiment of the utility model;

[0030] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0031] Figure 7 for Figure 5 A partial enlarged view of point B in the middle;

[0032] Figure 8 for Figure 5 A partial enlarged view of point C in the middle;

[0033] Fig. 9 The clamping jaw structure of the clamp provided in one embodiment of the utility model is enlarged Figure 1 .

[0034] Fig.10 The clamping jaw structure of the clamp provided in one embodiment of the utility model is enlarged Figure 2 ;

[0035] Fig.11 The clamping jaw structure of the clamp provided in one embodiment of the utility model is enlarged Figure 3 ;

[0036] Fig.12 The clamping jaw structure of the clamp provided in one embodiment of the utility model is enlarged Figure 4 .

[0037] Reference numerals:

[0038] 10 Crucible

[0039] 100 clamping parts 200 crane boom 300 shaft rod

[0040] 400 height adjustment component 500 stabilizing rod 140 first elastic component

[0041] 110 force rod 120 rotating crank arm 130 clamping claw

[0042] 111 first connection part 121 second connection part 122 third connection part

[0043] 131 sub-clamping plate 1311 arc surface 1311a groove

[0044] 132 Rotation adjustment connector 133 Compression spring 134 Height adjustment plate

[0045] 141 threaded rod 142 first spring 143 first nut

[0046] 410 mounting block 420 hook 430 distance adjustment piece

[0047] 421 lifting handle 431 adjustable bolt 432 second nut DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; the technical features designed in different implementation modes of the utility model described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0049] In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and cannot be understood as limitations on the present invention; it should be further understood that the terms used in the present invention should be understood to have meanings consistent with the meanings of these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in this utility model.

[0050] The utility model provides Figure 1-12 The adjustable moment anti-slip detachable crucible clamp shown includes a clamping part 100; each of the clamping parts 100 includes:

[0051] Two force rods 110, wherein the upper end of one of the force rods 110 is rotatably connected to the upper end of the other force rod 110;

[0052] Two rotating crank arms 120, the upper ends of the two rotating crank arms 120 are rotatably connected to the lower ends of the corresponding two force rods 110, and the middle bending parts of the two rotating crank arms 120 are rotatably connected;

[0053] Two clamping jaws 130 disposed opposite to each other, the two clamping jaws 130 are respectively connected to the lower ends of the two rotating crank arms 120;

[0054] The two force rods 110 are connected to the two ends of the first elastic accessory 140 on the sides facing each other, and the magnitude of the rebound force applied outward by the first elastic accessory 140 is adjustable. Preferably, the first elastic accessory 140 includes a threaded rod 141, a first spring 142, and two first nuts 143 matching the threaded rod 141; the two ends of the threaded rod 141 are connected to the two force rods 110; the first spring 142 and the two first nuts 143 are sleeved on the outside of the threaded rod 141, and the two first nuts 143 are respectively arranged on the outside of the two ends of the first spring 142, and the magnitude of the rebound force applied outward by the first elastic accessory 140 is adjusted by adjusting the distance between the two first nuts 143. Preferably, the rotation connection method is hinged.

[0055] like Figure 1-12 As shown, the specific working process of the clamping component 100 is as follows:

[0056] The upper end connection of the two force rods 110 (i.e., the first connection portion 111) is moved downward, and the lower ends of the two force rods 110 are opened outward and moved away from each other, so as to drive the upper ends of the two rotating crank arms 120 to move away from each other. Since the middle bending portions of the rotating crank arms 120 are rotatably connected to each other, the upper ends of the rotating crank arms 120 move away from each other, and the lower ends of the two rotating crank arms 120 move away from each other, so that the two clamping jaws 130 move away to release the crucible 10.

[0057] Similarly, the upper connection point (i.e., the first connection portion 111) of the two force rods 110 is moved upward, and the lower ends of the two force rods 110 are retracted inward to approach each other, so as to drive the upper ends of the two rotating crank arms 120 to approach each other, and the upper ends of the rotating crank arms 120 approaching each other drive the lower ends of the two rotating crank arms 120 to approach each other, so that the two clamping claws 130 tightly grasp the crucible 10. In this way, the steps of loosening and fastening the crucible 10 are performed, and the clamping and releasing of the crucible 10 are completed.

[0058] In addition, by connecting the first elastic accessory 140 between the two force rods 110, and the magnitude of the rebound force applied outward by the first elastic accessory 140 is adjustable, the clamping force of the clamping jaw 130 can be adjusted by adjusting the rebound force of the first elastic accessory 140; Figure 6 The first elastic accessory 140 shown is used to adjust the force between the force rods 110, thereby adjusting the clamping force between the clamping jaws 130. A first nut 143 is provided on the outer sides of both ends of the first spring 142. The distance between the first nut 143 and the threaded rod 141 is adjusted by screwing the first nut 143. The shorter the distance between the first nut 143 and the first spring 142, the smaller the force of the clamping jaws 130 to clamp the crucible 10. The clamping force is adjusted by adjusting the first elastic accessory 140 during use, thereby protecting the crucible 10 from being damaged by clamping.

[0059] Therefore, the utility model can adjust the clamping force of the clamping jaw 130 by connecting the first elastic fitting 140 between the two force rods 110. During use, the clamping force can be adjusted according to the surface of the crucible 10 and the number of times it is used. The more times the crucible 10 is used, the more fragile it is and the easier it is to be crushed by the clamp. By adopting this design, the damage rate of the crucible 10 can be reduced; the traditional clamp cannot adaptively adjust the clamping force of the clamping jaw 130, resulting in the clamp being easily unusable and discarded once it is made.

[0060] Preferably, the first spring 142 is a heavy-load spring.

[0061] Preferably, it includes a traveling boom 200, a plurality of the clamping components 100 arranged below the traveling boom 200, and an axle rod 300; the upper ends of the two force rods 110 form a first connection portion 111 at their rotatable connection; at the first connection portion 111, the traveling boom 200 and the upper ends of the two force rods 110 of each clamping component 100 are rotatably connected; the middle bending portions of the two rotating crank arms 120 form a second connection portion 121 at their rotatable connection; at the second connection portion 121, the axle rod 300 and the two rotating crank arms 120 of each clamping component 100 are rotatably connected. Preferably, the rotating connection method is hinged. Preferably, the traveling boom 200 is provided with a waist hole, and the hoisting operation is performed through the waist hole above.

[0062] like Figure 1 and 5 As shown, at the first connection part 111, the crane boom 200 is rotatably connected to the upper ends of the two force rods 110 of each clamping component 100, and the crane boom 200 connects several clamps in series, and provides a pulling force at the first connection part 111 of several clamping components 100 through the crane boom 200, so that the first connection parts 111 of several clamping components 100 move up and down uniformly; at the second connection part 121, the shaft rod 300 is rotatably connected to the two rotating crank arms 120 of each clamping component 100, and the shaft rod 300 connects several clamping components 100 in series. In addition to being the support shaft of the rotation connection point of the two rotating crank arms 120, it also provides support for the entire clamp when it is lifted without load. The vertical distance between the shaft rod 300 and the crane boom 200 determines the angle between the jaws 130 of the crucible 10.

[0063] Preferably, the rotating curved arm 120 includes an upper section, a middle section, and a lower section from top to bottom; a middle section bending portion (i.e., the second connecting portion 121) is designed at the connection between the upper section and the middle section, and a lower section bending portion is provided at the connection between the middle section and the lower section, and in the middle section bending portion and the lower section bending portion, the angle at the middle section bending portion is an obtuse angle (i.e., the angle between the upper section and the middle section is an obtuse angle), and the clamp at the lower section bending portion is not equal to zero, and can preferably be a right angle.

[0064] Preferably, a height adjustment component 400 is provided below the crane boom 200; the height adjustment component 400 includes a mounting block 410 and a hook 420 installed on the mounting portion; the mounting block 410 is rotatably connected to the crane boom 200, so that when the mounting block 410 is freely hanging under the action of gravity, the hook 420 hooks the shaft 300, and when the mounting block 410 is rotated, the hook 420 is separated from the shaft 300; wherein, the hook 420 is connected to the mounting block 410 through a distance adjustment member 430, so that the distance between the hook 420 and the mounting block 410 can be adjusted, so that when the mounting block 410 is freely hanging under the action of gravity, the distance between the hook 420 and the crane boom 200 can be adjusted. Preferably, a lifting handle 421 is provided on the side outer wall of the hook 420. Further preferably, the distance adjustment member 430 is a set of mutually matching adjustable bolts 431 and second nuts 432; a screw hole is provided on the mounting block 410, and the adjustable bolt 431 and the nut are passed through the screw hole on the mounting block 410, and the bottom end of the adjustable bolt 431 is fixedly connected to the hook 420.

[0065] The height adjustment component 400 is designed. When the hook 420 hooks the shaft 300, the vertical distance between the shaft 300 and the crane boom 200 can be adjusted by the height adjustment component 400. The working process is as follows:

[0066] When the clamp is unloaded, the mounting block 410 falls freely under the action of gravity, and the hook 420 hooks the shaft rod 300. At this time, the distance between the hook 420 and the crane boom 200 determines the distance between the shaft rod 300 and the crane boom 200. The distance between the hook 420 and the mounting block 410 is adjusted by screwing the adjustable bolt 431, thereby adjusting the distance between the hook 420 and the crane boom 200 and the distance between the shaft rod 300 and the crane boom 200.

[0067] By adjusting the different heights of the hook 420, which is equivalent to adjusting the distance between the shaft rod 300 and the crane boom 200, the angle and spacing between the clamps 130 can be controlled, so as to adapt to different spacings between crucibles 10 of different specifications when descending without load, and facilitate use.

[0068] When the clamping jaws 130 are in position to the outside of the crucible 10, before the crucible 10 needs to be clamped, the mounting block 410 is rotated by pulling an external force (such as pulling the lifting handle 421 outward in the present embodiment) to disengage the hook 420 from the shaft rod 300. At this time, the distance between the shaft rod 300 and the crane boom 200 is no longer limited, and the clamping jaws 130 can fasten the crucible 10 by lifting the crane boom 200.

[0069] Preferably, each of the clamping jaws 130 includes sub-clamping plates 131 distributed on both sides of the rotating crank arm 120, and the side of the sub-clamping plate 131 facing the crucible 10 is an arcuate surface 1311, so that when the clamp clamps the crucible 10, the arcuate surface 1311 of the clamping jaw 130 fits tightly against the side wall of the crucible 10.

[0070] Preferably, the clamping jaw 130 is detachably connected to the lower end of the rotating crank arm 120; preferably, the clamping jaw 130 is rotatably connected to the lower end of the rotating crank arm 120 through a rotating adjustment connecting piece 132, so that the clamping jaw 130 cannot rotate along the vertical axis as the axis, and it can rotate along the horizontal axis parallel to the shaft rod 300 as the axis. Preferably, the clamping jaw 130 is connected to the crank arm through a compression spring 133. By rotating the adjusting connecting piece 132, the two sub-clamping plates 131 can be rotated to adjust the direction, and then with the resilience of the compression spring 133, the two sub-clamping plates 131 are always kept vertical.

[0071] like Figure 8-12 As shown, the advantages of designing the clamping jaw 130 to be rotatable (so that the clamping jaw 130 cannot rotate along the vertical axis as the axis, and it can rotate along the horizontal axis parallel to the shaft 300 as the axis) are:

[0072] The arc surface 1311 of the gripping clamp is always in full contact with the arc surface of the crucible 10 in the vertical direction, preventing the edge of the clamping jaw 130 from making line contact with the crucible 10 and damaging the crucible 10; and the clamping jaw 130 and the rotating crank arm 120 are balanced by the compression spring 133 so that the clamping jaw 130 is always kept vertical, instead of adopting the traditional design of the clamping jaw 130 and the crank arm being integrally hard-connected.

[0073] The rotating adjustment connecting piece 132 is provided at the lower end of the rotating crank arm 120, and the axis of the rotating adjustment connecting piece 132 is perpendicular to the vertical direction and parallel to the axis of the shaft 300; each of the clamping jaws 130 includes sub-clamping plates 131 distributed on both sides of the rotating crank arm 120, and the two sub-clamping plates 131 are respectively connected to the two ends of the rotating adjustment connecting piece 132, so that the sub-clamping plates 131 can rotate along the axis of the rotating adjustment connecting piece 132. In addition, through the structural design of the rotating adjustment connecting piece 132, the clamping jaw 130 is detachable; a total of two compression springs 133 are designed along the upper and lower rotating crank arm 120, which are used to keep the clamping jaw 130 always vertical and not skewed when unloaded. If skewed, it may contact the surface of the crucible 10 during the descent process to damage the crucible 10 or not descend to the position at all.

[0074] In summary, the connection structure between the clamping jaw 130 and the rotating crank arm 120 adopts a similar modular connection structure as described above. Once the clamping jaw 130 is damaged, it can be replaced or disassembled for repair. This is different from the hard connection fixed structure currently on the market, which requires the entire crank arm and the clamping jaw 130 to be replaced once damaged. The most important function is to ensure that the surface of the clamping jaw 130 is always in full contact with the surface of the crucible 10 during the clamping process of the crank arm, thereby improving the clamping efficiency and reducing the damage rate of the crucible 10.

[0075] It should be noted that:

[0076] In this embodiment, a graphite crucible 10 (high temperature can reach 400° C.) is used. Depending on the design concept, crucibles 10 made of other materials can also be used.

[0077] In this embodiment, three sets of clamping components 100 are arranged under one crane boom 200, and each set of clamping components 100 has a set of clamping jaws 130 designed to face each other, that is, there are three sets of clamping jaws 130 in total, and one set of clamping jaws 130 (four sub-clamping plates 131) can clamp two crucibles 10. Three sets of clamping jaws 130 can clamp six crucibles 10 at a time; according to the design concept, the number of clamping components 100 on the crane boom 200 can also be adaptively adjusted to adjust the number of crucibles 10 clamped by the clamp at one time, including but not limited to the embodiment scheme.

[0078] Preferably, the surface of the arc-shaped surface 1311 is set as an anti-slip structural surface; the anti-slip structural surface is provided with a plurality of grooves 1311a which are parallel to each other and perpendicular to the vertical direction.

[0079] The conventional method of increasing friction on the surface of the arc surface 1311 is to set a number of protrusions on the surface, but the protrusions may damage the crucible 10. The groove 1311a design can not only increase the friction force (reducing the clamping force to a certain extent), but also greatly reduce the damage of the crucible 10.

[0080] In this embodiment, the upper and lower spacing distances of adjacent grooves 1311a are 5 to 10 mm, the grooves 1311a are 3 to 5 mm deep, and 5 mm wide, so that the friction force can be increased and the damage of the crucible 10 can be greatly reduced. It should be noted that, according to the above design concept, the distance, depth and width of the grooves 1311a can also be adaptively adjusted according to the material and size of the actually clamped crucible 10, including but not limited to the above dimensions.

[0081] Preferably, two stabilizing rods 500 are further included; a third connection portion 122 is formed at the rotatable connection between the upper end of the rotating crank arm 120 and the lower end of the corresponding force rod 110; at the third connection portion 122, the stabilizing rod 500 is rotatably connected to the upper end of the rotating crank arm 120 and the lower end of the force rod 110 of each clamping component 100. Preferably, the rotatable connection is hinged.

[0082] A stabilizing rod 500 is designed at the third connecting portion 122 to connect the third connecting portions 122 of several clamping components 100 in series, thereby increasing the stability of the entire clamp, preventing the device from loosening, improving the rigidity of the device, and facilitating use.

[0083] Preferably, a height adjustment plate is provided below the second connection portion 121; and the lower surface of the height adjustment plate is a horizontally arranged plane structure.

[0084] The height adjustment plate has the following functions: first, to ensure that the three groups of crucibles 10 are held at the same height; second, to protect the upper cover of the crucible 10. By adjusting the height of the height adjustment plate, the clamp can be applied to crucibles 10 of different heights.

[0085] In summary, the crucible fixture provided by the utility model has the following innovative improvements and beneficial effects:

[0086] 1. Defects of existing traditional fixtures:

[0087] Although there are currently clamps in the industry that can clamp multiple crucibles 10 at one time, they usually use a clamping jaw 130 and a curved arm to be fixed and hard-connected, and the effect is not ideal:

[0088] First, the clamping force of the clamping jaws 130 cannot be adjusted, resulting in a high breakage rate of the crucible 10;

[0089] Second, the universality of the clamp is poor. Crucibles 10 of different diameters and heights are not universal, and the clamping jaws 130 cannot be replaced individually.

[0090] Third, the contact surface between the clamping jaws 130 and the crucible 10 has a poor anti-slip effect, which causes the crucible 10 to slip during the lifting process, resulting in an accident.

[0091] 2. The utility model solves the above problems through the following design points and effects:

[0092] (1) In the present invention, the clamping force of the clamping jaws 130 can be adjusted by connecting the first elastic fittings 140 between the two force rods 110. During use, the clamping force can be adjusted according to the surface of the crucible 10 and the number of times it is used. The more times the crucible 10 is used, the more fragile it is and the easier it is to be crushed by the clamp. By adopting this design, the damage rate of the crucible 10 can be reduced as follows: the traditional clamp cannot adaptively adjust the clamping force of the clamping jaws 130, resulting in the clamp being easily unusable and discarded once it is made;

[0093] (2) In the present invention, the anti-slip structure design of the contact surface between the clamping jaw 130 and the crucible 10 can increase the friction force and appropriately reduce the clamping force, which is more conducive to protecting the crucible 10;

[0094] (3) In the present invention, the detachable rotating shaft connection structure design of the clamping jaw 130 and the rotating crank arm 120 makes it easy to replace and maintain the clamping jaw 130, and can always keep the arc surface of the clamping jaw 130 in full vertical contact with the arc surface of the crucible 10, thereby increasing the friction between the two and appropriately reducing the clamping force, which is more conducive to protecting the crucible 10;

[0095] (4) The clamp provided by the utility model has wider applicability for clamping the crucible 10. By adjusting the distance adjustment member 430 and the height of the height adjustment plate 134, the clamp can be used for a shorter crucible 10.

[0096] In summary, the clamp provided by the utility model has a movable and replaceable jaw 130, which can be suitable for crucibles 10 of different diameters and heights. The clamping force of the jaw 130 is adjustable, and the jaw 130 is easy to replace. In addition, the anti-slip design of the jaw 130 is optimized according to the surface characteristics of the crucible 10, which greatly reduces the risk of slipping of the crucible 10 during the lifting process.

[0097] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the utility model can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0098] Although the terms such as force rod, rotating crank arm, etc. are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model; the terms "first", "second", etc. (if any) in the description and claims of the embodiment of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A crucible fixture, characterized in that: It comprises a clamping component (100); each of the clamping components (100) comprises: Two force rods (110), wherein the upper end of one of the force rods (110) is rotatably connected to the upper end of the other force rod (110); Two rotating crank arms (120), the upper ends of the two rotating crank arms (120) are rotatably connected to the lower ends of the corresponding two force rods (110), and the middle bending parts of the two rotating crank arms (120) are rotatably connected; Two clamping jaws (130) arranged opposite to each other, the two clamping jaws (130) being respectively connected to the lower ends of the two rotating crank arms (120); Wherein, the two force rods (110) are connected to two ends of the first elastic accessory (140) at one side facing each other, and the magnitude of the rebound force applied outward by the first elastic accessory (140) is adjustable.

2. The crucible fixture according to claim 1, characterized in that: The first elastic accessory (140) comprises a threaded rod (141), a first spring (142), and two first nuts (143) matching the threaded rod (141); Two ends of the threaded rod (141) are respectively connected to the two force rods (110); The first spring (142) and two first nuts (143) are sleeved on the outside of the threaded rod (141), and the two first nuts (143) are respectively arranged on the outside of two ends of the first spring (142). By adjusting the distance between the two first nuts (143), the magnitude of the rebound force applied outward by the first elastic accessory (140) can be adjusted.

3. The crucible fixture according to any one of claims 1-2, characterized in that: It comprises a crane boom (200), a plurality of clamping components (100) arranged below the crane boom (200), and an axle rod (300); The upper ends of the two force rods (110) form a first connection portion (111) at their rotatable connection; at the first connection portion (111), the crane boom (200) and the upper ends of the two force rods (110) of each of the clamping components (100) are rotatably connected; The middle bending parts of the two rotating crank arms (120) form a second connection part (121) at their rotatable connection; at the second connection part (121), the shaft (300) is rotatably connected to the two rotating crank arms (120) of each clamping component (100).

4. The crucible fixture according to claim 3, characterized in that: A height adjustment component (400) is provided below the crane boom (200); The height adjustment component (400) comprises a mounting block (410) and a hook (420) mounted on the mounting portion; the mounting block (410) is rotatably connected to the crane boom (200), so that when the mounting block (410) freely hangs down under the action of gravity, the hook (420) hooks the shaft (300), and when the mounting block (410) rotates, the hook (420) is separated from the shaft (300); The hook (420) is connected to the mounting block (410) via a distance adjusting member (430), so that the distance between the hook (420) and the mounting block (410) can be adjusted, thereby enabling the distance between the hook (420) and the crane boom (200) to be adjusted when the mounting block (410) freely hangs under the action of gravity.

5. The crucible fixture according to claim 4, characterized in that: The distance adjustment member (430) is a set of mutually matching adjustable bolts (431) and second nuts (432); The mounting block (410) is provided with a screw hole, and the adjustable bolt (431) and the nut are inserted into the mounting block (410) through the screw hole, and the bottom end of the adjustable bolt (431) is fixedly connected to the hook (420).

6. The crucible fixture according to claim 5, characterized in that: A lifting handle (421) is provided on the side outer wall of the hook (420).

7. The crucible fixture according to claim 3, characterized in that: The clamping claw (130) is detachably connected to the lower end of the rotating crank arm (120); and / or, Each of the clamping jaws (130) comprises sub-clamping plates (131) distributed on both sides of the rotating crank arm (120); a side of the sub-clamping plates (131) facing the crucible (10) is an arc-shaped surface (1311), so that when the clamp clamps the crucible (10), the arc-shaped surface (1311) of the clamping jaw (130) fits tightly against the side wall of the crucible (10).

8. The crucible fixture according to claim 7, characterized in that: The clamping jaw (130) is connected to the rotatable shaft at the lower end of the rotating crank arm (120) via a rotating adjustment connecting piece (132), so that the clamping jaw (130) cannot rotate along a vertical axis as an axis, but can rotate along a horizontal axis parallel to the shaft (300) as an axis; and / or, The surface of the arc-shaped surface (1311) is configured as an anti-slip structural surface; the anti-slip structural surface is provided with a plurality of grooves (1311a) which are parallel to each other and perpendicular to the vertical direction.

9. The crucible fixture according to claim 1, characterized in that: Also included are two stabilizer bars (500); A third connection portion (122) is formed at a rotatable connection between the upper end of the rotating crank arm (120) and the corresponding lower end of the force rod (110); at the third connection portion (122), the stabilizing rod (500) is rotatably connected to the upper end of the rotating crank arm (120) and the lower end of the force rod (110) of each clamping component (100).

10. The crucible fixture according to claim 3, characterized in that: A height adjustment plate (134) is provided below the second connecting portion (121); The lower surface of the height adjustment plate (134) is a horizontally arranged plane structure.

Images