Clamping device and electrode lengthening robot

Abstract

The utility model relates to the technical field of electrode extension, and discloses a clamping device and an electrode extension robot. The clamping device comprises a mounting cylinder, a driving part and a plurality of clamping assemblies, the multiple clamping assemblies are connected end to end in the circumferential direction of the mounting cylinder, each clamping assembly is provided with a clamping block, and the driving part can drive the multiple clamping assemblies to move in the circumferential direction of the mounting cylinder; and the clamping assembly can drive the clamping block to extend into the mounting cylinder or extend out of the mounting cylinder. The electrode lengthening robot comprises a machine body and the clamping device. When the clamping device is used, the periphery of a part to be clamped can be sleeved with the installation cylinder, the driving piece drives the clamping blocks to synchronously stretch out or retract, multi-point positioning of the part to be clamped is achieved, the number of the driving piece is one, cost is reduced, meanwhile, the clamping blocks can synchronously clamp the periphery of the part to be clamped, and the clamping device is convenient to use. And it is ensured that the to-be-clamped part is evenly stressed, and damage to the to-be-clamped part is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode extension, in particular to a clamping device and an electrode extension robot. Background Art

[0002] With the rapid development of social economy in today's world, the demand for special steel in all walks of life is becoming more and more extensive. Most of the electric furnaces in use so far use graphite electrodes of different specifications. As a conductive material in electric furnace smelting, the consumption of graphite electrodes is proportional to the consumption of electric power. The parameters of graphite electrodes commonly used in China are: diameter 300mm~700mm, length 1600mm~2200mm. Graphite electrodes of different specifications are used according to the size of the electric furnace during work, and as the electrodes are continuously consumed in electric furnace smelting, the electrodes need to be continuously extended.

[0003] The electrode extension robot is needed to extend the electrode. When in use, the electrode extension robot clamps the new electrode through the clamping mechanism to achieve the positioning of the new electrode, so as to facilitate the support of the new electrode on the old electrode. At present, the clamping mechanism of the electrode extension robot drives the clamping block through the oil cylinder to push the electrode to a positioning block for clamping, or clamps the electrode on both sides at the same time through two oil cylinders. This clamping method is prone to cause eccentricity or unstable clamping of the electrode, and the two oil cylinders will cause a waste of cost, and the two oil cylinders driven separately will cause uneven force, which will affect the clamping effect of the electrode and easily cause damage to the electrode. Utility Model Content

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a clamping device and an electrode lengthening robot.

[0005] The utility model provides a clamping device, comprising a mounting tube, a driving member and a plurality of clamping assemblies arranged on the outer periphery of the mounting tube, wherein the plurality of clamping assemblies are connected end to end along the circumferential direction of the mounting tube, each of the clamping assemblies has a clamping block and is configured as follows:

[0006] The driving member can drive the plurality of clamping assemblies to move along the circumferential direction of the mounting tube, and enable the clamping assemblies to drive the clamping blocks to extend into the interior of the mounting tube or extend out of the mounting tube to clamp or release the parts to be clamped in the mounting tube during the movement.

[0007] Optionally, the clamping assembly includes an arc-shaped plate and a clamping arm hingedly arranged on the outer periphery of the mounting tube, and the clamping block is arranged on the clamping arm so as to be able to extend into the interior of the mounting tube or extend out of the mounting tube following the rotation of the clamping arm; the two ends of the clamping arm are respectively hingedly connected to the ends of the arc-shaped plates of two adjacent clamping assemblies, and are configured as follows:

[0008] The driving member is connected to any one of the clamping assemblies and is used to drive a plurality of the clamping assemblies to move simultaneously.

[0009] Optionally, the clamp arm is rotatably arranged on the mounting tube via a first axis, and two second axes are provided on the clamp arm, and the two second axes are respectively arranged at two ends of the clamp arm, and the two ends of the clamp arm are respectively hingedly connected via the two second axes and the two arc-shaped plates at the two ends of the clamp arm, and the two second axes are symmetrically arranged relative to the first axis.

[0010] Optionally, the clamp arm is further provided with a third shaft, the clamp block is hingedly connected to the clamp arm via the third shaft, and the third shaft and two of the second shafts are arranged on one of the concentric circles of the first shaft.

[0011] Optionally, the driving member includes a driving cylinder and a telescopic rod, the driving cylinder can drive the telescopic rod to extend or retract along the extension direction of the telescopic rod, the driving cylinder is hingedly arranged on the mounting tube, and the telescopic rod is hingedly connected to one of the clamping arms through a fourth axis.

[0012] Optionally, two mounting plates are provided at intervals on the outer circumference of the mounting tube along the axial direction of the mounting tube, and both ends of the first shaft are respectively connected to the two mounting plates.

[0013] Optionally, each of the arc-shaped plates includes two arc-shaped plate bodies, and the two arc-shaped plate bodies are arranged at intervals along the axial direction of the second shaft and are located between the two mounting plates.

[0014] Optionally, a mounting seat for mounting the driving member is provided on the outer periphery of the mounting cylinder, and the mounting seat is located between the two arc-shaped plate bodies.

[0015] Optionally, each of the clamping arms includes two clamping plates, and the two clamping plates are spaced apart along the axial direction of the first shaft.

[0016] The utility model also provides an electrode extension robot, comprising a body and any one of the above-mentioned clamping devices arranged on the body, wherein the mounting tube of the clamping device is formed by the electrode tube of the electrode extension robot and is sleeved on the outer periphery of the electrode.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0018] When the clamping device provided by the utility model is in use, the installation cylinder can be sleeved on the outer periphery of the part to be clamped, and the driving member drives the multiple clamping components to move along the circumferential direction of the installation cylinder, so that the clamping blocks on the multiple clamping components can extend into the interior of the installation cylinder to clamp on the outer periphery of the part to be clamped, thereby realizing multi-point positioning of the part to be clamped, and the driving member is one, which reduces the cost, and at the same time enables the multiple clamping blocks to be synchronously clamped on the outer periphery of the part to be clamped, ensuring that the part to be clamped is subjected to uniform force, increasing the stability of the positioning of the part to be clamped, ensuring the clamping effect of the part to be clamped, and avoiding damage to the part to be clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0020] In order to more clearly illustrate the implementation mode of the utility model or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the clamping device described in the embodiment of the utility model;

[0022] Figure 2 A top view of the clamping device according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the installation cylinder described in the embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the clamp arm described in the embodiment of the utility model;

[0025] Figure 5 A top view of the clamp arm according to an embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the clamping arm connected to the driving member in an embodiment of the utility model;

[0027] Figure 7 A top view of the clamping arm connected to the driving member according to an embodiment of the utility model;

[0028] Figure 8 It is a schematic structural diagram of the electrode extension robot described in an embodiment of the utility model.

[0029] Description of Reference Numerals

[0030] 1. Mounting tube; 11. Mounting plate; 111. Mounting hole; 12. Mounting seat; 13. Avoidance hole;

[0031] 2. Driving member; 21. Driving cylinder; 22. Telescopic rod;

[0032] 3. Clamping assembly; 31. Clamping block; 311. Anti-skid layer; 32. Arc plate; 321. Arc plate body; 33. Clamping arm; 330. Clamping plate; 331. First shaft; 332. Second shaft; 333. Third shaft; 334. Fourth shaft; 335. Wedge-shaped portion; 336. First shaft sleeve; 337. Second shaft sleeve; 338. Third shaft sleeve; 339. Fourth shaft sleeve;

[0033] 4. Body. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] The following description sets forth many specific details to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the implementation methods in the specification are only part of the implementation methods of the present invention, rather than all of the implementation methods.

[0036] Combination Figure 1 and Figure 2As shown, the clamping device provided by the embodiment of the utility model includes a mounting tube 1 and a driving member 2 and a plurality of clamping assemblies 3 arranged on the periphery of the mounting tube 1, wherein the mounting tube 1 can be sleeved on the periphery of the part to be clamped, and when the part to be clamped is an electrode, the mounting tube 1 is sleeved on the periphery of the electrode. The plurality of clamping assemblies 3 are connected end to end along the circumferential direction of the mounting tube 1, and the plurality of clamping assemblies 3 can be connected by hinged connection. Each clamping assembly 3 has a clamping block 31, and the driving member 2 can drive the plurality of clamping assemblies 3 to move along the circumferential direction of the mounting tube 1, and the clamping assembly 3 can drive the clamping block 31 to extend into the interior of the mounting tube 1 or extend out of the mounting tube 1 to clamp or release the part to be clamped in the mounting tube 1 during the movement. Here, the driving member 2 can drive the plurality of clamping assemblies 3 to move along the circumferential direction of the mounting tube 1, which means that the driving member 2 can drive at least some of the components in the clamping assembly 3 to move along the circumferential direction of the mounting tube 1. Since the multiple clamping assemblies 3 are connected end to end, one clamping assembly 3 can be driven to move along the circumferential direction of the mounting tube 1, so that the clamping assembly 3 can push another adjacent clamping assembly 3 to move along the circumferential direction of the mounting tube 1, so as to realize that one driving member 2 drives multiple clamping assemblies 3. The circumferential direction of the mounting tube 1 here does not mean that the moving direction of the clamping assembly 3 is consistent with the circumferential direction of the mounting tube 1, but means that the clamping assembly 3 can move in an arc-shaped motion trajectory on the periphery of the mounting tube 1. It can be understood that in some usage modes, the moving direction of the clamping assembly 3 is consistent with the circumferential direction of the mounting tube 1.

[0037] The number of the clamping assemblies 3 should be greater than or equal to two. Preferably, the number of the clamping assemblies 3 is three, so as to ensure the clamping effect of the component to be clamped and reduce the structural cost.

[0038] When the clamping device provided by the utility model is in use, the mounting tube 1 can be sleeved on the outer periphery of the part to be clamped, and the driving member 2 drives the multiple clamping components 3 to move along the circumferential direction of the mounting tube 1, so that the clamping blocks 31 on the multiple clamping components 3 can extend into the interior of the mounting tube 1 to clamp on the outer periphery of the part to be clamped, thereby realizing multi-point positioning of the part to be clamped, and the driving member 2 is one, which reduces the cost, and at the same time, the multiple clamping blocks 31 can be synchronously clamped on the outer periphery of the part to be clamped, ensuring that the part to be clamped is uniformly stressed, increasing the stability of the positioning of the part to be clamped, ensuring the clamping effect of the part to be clamped, and avoiding damage to the part to be clamped. Among them, when the part to be clamped is an electrode, the mounting tube 1 is sleeved on the outer periphery of the electrode. The clamping device under this design method can make the various positions of the electrode uniformly stressed, and the multiple clamping blocks 31 move synchronously toward the axial direction of the mounting tube 1, thereby realizing self-centering clamping of the electrode, and at the same time effectively improving the stability of the clamping action and avoiding damage to the electrode. It is understandable that the part to be clamped may also be other cylindrical structures.

[0039] Continue to refer to Figure 1 and Figure 2 The clamping assembly 3 includes an arc-shaped plate 32 and a clamping arm 33 hingedly arranged on the outer periphery of the mounting tube 1. In this design, the clamping arm 33 can rotate relative to the mounting tube 1, and the driving member 2 drives the arc-shaped plate 32 to move along the circumferential direction of the mounting tube 1. The clamping block 31 is arranged on the clamping arm 33 so as to extend into or extend out of the mounting tube 1 following the rotation of the clamping arm 33, thereby clamping or releasing the part to be clamped inside the mounting tube 1. The two ends of the clamping arm 33 are respectively hingedly connected to the ends of the arc-shaped plates 32 of two adjacent clamping assemblies 3, and the driving member 2 is connected to any one of the clamping assemblies 3 to drive multiple clamping assemblies 3 to move simultaneously.

[0040] Specifically, the clamping arm 33 of the clamping assembly 3 can drive the arc plate 32 to move along the circumferential direction of the mounting tube 1 during the rotation around the mounting tube 1, and can drive another clamping arm 33 connected thereto to rotate through the arc plate 32. Specifically, both ends of the clamping arm 33 extend out of the hinged position of the clamping arm 33 and the mounting tube 1 along the circumferential direction of the mounting tube 1, and the two extended ends of the clamping arm 33 are respectively hingedly connected to the two arc plates 32, and the clamping block 31 is arranged at one of the extended ends of the clamping arm 33. When the arc plate 32 drives the clamping arm 33 to rotate, when the end of the clamping arm 33 away from the clamping block 31 moves along the axial direction away from the mounting tube 1, the clamping arm 33 will drive the clamping block 31 to move toward the axial direction of the mounting tube 1. The driving member 2 is used to drive the clamping arm 33 to rotate or drive the arc plate 32 to move along the circumferential direction of the mounting tube 1, so that multiple clamping assemblies 3 can move simultaneously.

[0041] In some embodiments, the driving member 2 is used to drive the clamping arm 33 to rotate. Specifically, the output end of the driving member 2 is hingedly connected to the end of the clamping arm 33 away from the clamping block 31, so that the end of the clamping arm 33 away from the clamping block 31 can be driven by the driving member 2 to rotate toward the axis direction away from the mounting tube 1, thereby causing the end of the clamping arm 33 provided with the clamping block 31 to rotate toward the axis direction of the mounting tube 1, so that the clamping arm 33 drives the clamping block 31 to clamp the outer periphery of the component to be clamped, and at the same time, the clamping arm 33 in the rotating process can push the arc plate 32 to move along the circumferential direction of the mounting tube 1.

[0042] As a feasible implementation, the driving member 2 includes a driving cylinder 21 and a telescopic rod 22. The driving cylinder 21 can drive the telescopic rod 22 to extend or retract along the extension direction of the telescopic rod 22. The driving cylinder 21 is hingedly arranged on the mounting tube 1. The telescopic rod 22 is hingedly connected to one of the clamping arms 33 through a fourth axis 334. Specifically, the end of the telescopic rod 22 is hingedly connected to an end of the clamping arm 33 away from the clamping block 31. The driving rod body can be a cylinder, a hydraulic cylinder or an electric push rod, etc., which can be selected according to actual needs.

[0043] In this design, the end of the clamping arm 33 away from the clamping block 31 can be rotated in a clockwise or counterclockwise direction by driving the telescopic rod 22 to extend or retract by the driving cylinder 21, and because the driving cylinder 21 is hingedly connected to the mounting tube 1, and the telescopic rod 22 is hingedly connected to the clamping arm 33, the telescopic cylinder and the telescopic rod 22 can be adaptively deflected during the extension or retraction of the telescopic rod 22, thereby ensuring the driving effect of the clamping arm 33. The driving member 2 of this design is simple in structure,

[0044] In other embodiments, the driving member 2 is used to drive the arc plate 32 to move along the circumferential direction of the mounting tube 1. Specifically, the output end of the driving member 2 is hingedly connected to the arc plate 32, so that the driving member 2 can drive the arc plate 32 to rotate clockwise or counterclockwise along the circumferential direction of the mounting tube 1, thereby driving the clamping arm 33 hingedly connected to the arc plate 32 to rotate relative to the mounting tube 1, and then the clamping arm 33 can drive the clamping block 31 to clamp on the periphery of the component to be clamped, and at the same time, the clamping arm 33 in the rotation process can push another arc plate 32 connected thereto to move along the circumferential direction of the mounting tube 1. The setting method of the driving member 2 here is the same as the setting method of the driving member 2 in the above embodiment, and no further description is given here.

[0045] Combination Figure 1 and Figure 2 As shown, the clamping arm 33 is rotatably set on the mounting cylinder 1 through the first axis 331, and two second axes 332 are provided on the clamping arm 33, and the two second axes 332 are respectively set at the two ends of the clamping arm 33, and the two ends of the clamping arm 33 are respectively hingedly connected by the two second axes 332 and the two arc plates 32 at the two ends of the clamping arm 33, and the two second axes 332 are symmetrically set relative to the first axis 331, that is, the vertical distance between the two second axes 332 and the first axis 331 is A, and in multiple clamping assemblies 3, the value of A is equal, which ensures that the conveying torque of the arc plate 32 is the same, wherein the value of A can be designed according to actual needs.

[0046] Specifically, combined Figures 4 to 7As shown, the clamp arm 33 is provided with a first sleeve 336 and two second sleeves 337, the two second sleeves 337 are symmetrically arranged relative to the first sleeve 336, the first shaft 331 is inserted into the first sleeve 336, and the second shaft 332 is inserted into the second sleeve 337. The two ends of the first shaft 331 extending from the first sleeve 336 are respectively connected to the mounting tube 1, specifically connected to the mounting plate 11 of the mounting tube 1 (described below). Among them, the first shaft 331 can be fixedly connected to the mounting plate 11 of the mounting tube 1, at this time, the first shaft 331 and the first sleeve 336 can rotate relative to each other, thereby realizing the hinged connection between the clamp arm 33 and the mounting tube 1. The end of the second shaft 332 extending from the second sleeve 337 is connected to the arc plate 32. Among them, the extended end of the second shaft 332 can be fixedly connected to the arc plate 32, at this time, the second shaft 332 and the second sleeve 337 can rotate relative to each other, thereby realizing the hinged connection between the clamp arm 33 and the arc plate 32.

[0047] Combination Figure 1 and Figure 2 As shown, the clamp arm 33 is also provided with a third shaft 333, the clamp block 31 and the clamp arm 33 are hingedly connected via the third shaft 333, and the third shaft 333 and the two second shafts 332 are arranged on one of the concentric circles of the first shaft 331, the diameter of the concentric circle is D, and the value of D can be designed according to actual needs. Figures 4 to 7 As shown, the clamp arm 33 is further provided with a third sleeve 338, and the third sleeve 338 and the two second sleeves 337 are arranged on one of the concentric circles of the first sleeve 336. The third shaft 333 is inserted into the third sleeve 338, and the two ends of the third shaft 333 extending out of the third sleeve 338 are respectively connected to the clamp arm 33. The two ends of the third shaft 333 and the clamp arm 33 can be fixedly connected, and at this time, the third shaft 333 and the third sleeve 338 can rotate relative to each other, thereby realizing the hinged connection between the clamp block 31 and the clamp arm 33.

[0048] Under this design, the multiple clamping assemblies 3 can move in unison and can be pressed against the outer periphery of the part to be clamped in the direction of the axis of the mounting tube 1, ensuring that the axis of the part to be clamped coincides with the axis of the mounting tube 1, so as to achieve self-centering of the clamping device and ensure the accuracy of positioning of the part to be clamped. In addition, the clamping block 31 and the clamping arm 33 are hingedly connected so that when the clamping surface of the clamping block 31 contacts the peripheral wall of the part to be clamped, the angle between the clamping block 31 and the clamping arm 33 can be changed according to the shape of the peripheral wall of the part to be clamped, so that the clamping block 31 can be tightly attached to the peripheral wall of the part to be clamped.

[0049] Further optimized, in order to ensure the clamping effect of the clamping block 31, the shape of the clamping surface of the clamping block 31 matches the shape of the peripheral wall of the part to be clamped. The matching here means that the clamping surface of the clamping block 31 can fit on the peripheral wall of the part to be clamped, so as to increase the contact area between the clamping block 31 and the part to be clamped, and ensure that the clamping block 31 can stably clamp on the periphery of the part to be clamped.

[0050] Combination Figure 1 and Figure 3 As shown, two mounting plates 11 are provided at intervals along the axial direction of the mounting tube 1 on the outer periphery of the mounting tube 1, and the two ends of the first shaft 331 are respectively connected to the two mounting plates 11. Specifically, the two mounting plates 11 are respectively provided with mounting holes 111 at corresponding positions in the vertical direction, and the two ends of the first shaft 331 extend out of the first shaft sleeve 336 and are respectively connected to the mounting holes 111 on the two mounting plates 11. In this design, the mounting plate 11 can be used as the mounting base of the clamping assembly 3, thereby increasing the convenience of installing the clamping assembly 3.

[0051] Continue to refer to Figure 1 and Figure 3 The outer periphery of the mounting tube 1 is provided with a mounting seat 12 for mounting the driving member 2, and the mounting seat 12 is located between the two arc-shaped plate bodies 321. Specifically, the end of the driving cylinder 21 of the driving member 2 is hingedly connected to the mounting seat 12, and the telescopic rod 22 of the driving member 2 is hingedly connected to the clamp arm 33.

[0052] The clamp arm 33 is also provided with the fourth shaft 334, and the telescopic rod 22 of the driving member 2 is hingedly connected to the clamp arm 33 through the fourth shaft 334. Specifically, the clamp arm 33 is provided with a fourth shaft sleeve 339, and the fourth shaft 334 is inserted into the fourth shaft sleeve 339, and a mounting space is provided in the middle of the fourth shaft sleeve 339, and the mounting space allows the fourth shaft 334 to be exposed, and the end of the telescopic rod 22 is located in the mounting space and connected to the fourth shaft 334. The end of the telescopic rod 22 can be fixedly connected to the fourth shaft 334, and at this time, the fourth shaft 334 is rotatably connected to the fourth shaft sleeve 339 to realize the hinge connection between the telescopic rod 22 of the driving member 2 and the clamp arm 33.

[0053] like Figure 1 As shown, each clamping arm 33 includes two clamping plates 330, and the two clamping plates 330 are spaced apart along the axial direction of the first shaft 331. Under this design, the connection between the clamping arm 33 and the arc plate 32 and between the clamping arm 33 and the clamping block 31 can be made more stable, and the clamping arm 33 can provide a stable and sufficient supporting force to the clamping block 31, thereby ensuring the clamping effect of the clamping block 31.

[0054] Continue to refer to Figure 1Each arc plate 32 includes two arc plate bodies 321, which are spaced apart along the axis direction of the second shaft 332 and are located between the two mounting plates 11. The design of the two arc plates 32 can ensure the stability and uniformity of force transmission. Specifically, the two arc plates 32 are provided with a second sleeve 337, the second sleeve 337 is provided with a second shaft 332, both ends of the second shaft 332 extend out of the second sleeve 337, and the two extended ends of the second shaft 332 are respectively hingedly connected to the two arc plates 32.

[0055] Combination Figure 6 and Figure 7 As shown, one end of the clamp arm 33 is wedge-shaped, and the wedge-shaped portion 335 of the clamp arm 33 is hingedly connected to the arc plate 32, that is, the fourth shaft sleeve 339 mentioned above is arranged on the wedge-shaped portion 335. Under this design mode, the convenience of connecting the clamp arm 33 with the driving member 2 can be increased, and the wedge-shaped portion 335 is inclined toward the axial direction away from the mounting cylinder 1, so that the clamping block 31 on the clamp arm 33 and the position where the clamp arm 33 and the driving member 2 are hinged (the position of the fourth shaft sleeve 339) are located on opposite sides of the clamp arm 33, so that the driving member 2 can apply a sufficiently large driving force and supporting force to the clamp arm 33, and at the same time, the convenience of connecting the clamp arm 33 with the arc plate 32 is increased.

[0056] In some embodiments, a position of the mounting tube 1 corresponding to the clamping block 31 is provided with an avoidance hole 13 through which the clamping block 31 can pass. Specifically, the opening position of the avoidance hole 13 is opposite to the position of the clamping block 31, so that when the clamping block 31 moves toward the axial direction of the mounting tube 1, the clamping block 31 can pass through the avoidance hole 13 to clamp on the outer periphery of the component to be clamped. The avoidance hole 13 is designed in a manner to avoid affecting the structural strength of the mounting tube 1.

[0057] In some embodiments, the clamping surface of the clamping block 31 is provided with an anti-skid layer 311. The anti-skid layer 311 can ensure the tight contact between the clamping block 31 and the peripheral wall of the part to be clamped. Specifically, the anti-skid layer 311 can be a rubber layer, which can also effectively avoid hard contact between the clamping block 31 and the peripheral wall of the part to be clamped, thereby avoiding damage to the clamping block 31 or the part to be clamped.

[0058] In some embodiments, the angles of two adjacent clamping blocks 31 relative to the axis of the mounting tube 1 are the same. Under this design, multiple clamping blocks 31 can be evenly clamped on the periphery of the component to be clamped, ensuring the clamping effect of the component to be clamped. Taking the case where the number of clamping assemblies 3 and clamping blocks 31 is 3 as an example, the angle of two adjacent clamping blocks 31 relative to the axis of the mounting tube 1 is 120°, that is, the three clamping blocks 31, the first shaft 331, and the clamping arm 33 are evenly distributed at 120° around the center of the mounting tube 1, and the values ​​of A and D in the three clamping devices are equal.

[0059] like Figure 8 As shown, the utility model also provides an electrode extension robot, which includes a body 4 and any one of the above-mentioned clamping devices arranged on the body 4, wherein the clamping device includes all the technical features of the above-mentioned clamping devices, and the mounting tube 1 of the clamping device is sleeved on the periphery of the electrode so as to be clamped on the periphery of the electrode through the clamping device, thereby ensuring the fixing effect of the electrode and avoiding damage to the electrode.

[0060] As a feasible implementation, the mounting cylinder 1 is formed by the electrode cylinder of the electrode extension robot. In this design, the mounting cylinder 1 is a part of the electrode extension robot, which can reduce additional structural design and save structural costs. Among them, the electrode cylinder is welded by steel plates and steel pipes to ensure its own structural strength. The mounting plate 11 and the mounting seat 12 of the clamping device are both arranged on the electrode cylinder.

[0061] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A clamping device, characterized in that: The invention comprises a mounting tube (1), a driving member (2) and a plurality of clamping assemblies (3) arranged on the outer circumference of the mounting tube (1), wherein the plurality of clamping assemblies (3) are connected end to end along the circumferential direction of the mounting tube (1), each of the clamping assemblies (3) has a clamping block (31) and is configured as follows: The driving member (2) is capable of driving the plurality of clamping assemblies (3) to move along the circumferential direction of the mounting tube (1), and enables the clamping assemblies (3) to drive the clamping blocks (31) to extend into the interior of the mounting tube (1) or extend out of the mounting tube (1) during the movement to clamp or release the components to be clamped in the mounting tube (1).

2. The clamping device according to claim 1, characterized in that The clamping assembly (3) comprises an arc-shaped plate (32) and a clamping arm (33) hingedly arranged on the outer periphery of the mounting tube (1); the clamping block (31) is arranged on the clamping arm (33) so as to be able to extend into the interior of the mounting tube (1) or extend out of the mounting tube (1) following the rotation of the clamping arm (33); the two ends of the clamping arm (33) are respectively hingedly connected to the ends of the arc-shaped plates (32) of two adjacent clamping assemblies (3), and are configured as follows: The driving member (2) is connected to any one of the clamping assemblies (3) and is used to drive a plurality of the clamping assemblies (3) to move simultaneously.

3. The clamping device according to claim 2, characterized in that: The clamp arm (33) is rotatably arranged on the mounting cylinder (1) via a first shaft (331); two second shafts (332) are arranged on the clamp arm (33); the two second shafts (332) are respectively arranged at two ends of the clamp arm (33); the two ends of the clamp arm (33) are respectively hingedly connected via the two second shafts (332) and the two arc-shaped plates (32) at the two ends of the clamp arm (33); the two second shafts (332) are symmetrically arranged relative to the first shaft (331).

4. The clamping device according to claim 3, characterized in that: The clamping arm (33) is also provided with a third shaft (333), the clamping block (31) and the clamping arm (33) are hingedly connected via the third shaft (333), and the third shaft (333) and the two second shafts (332) are arranged on one of the concentric circles of the first shaft (331).

5. The clamping device according to claim 2, characterized in that: The driving member (2) comprises a driving cylinder (21) and a telescopic rod (22); the driving cylinder (21) is capable of driving the telescopic rod (22) to extend or retract along an extension direction of the telescopic rod (22); the driving cylinder (21) is hingedly arranged on the mounting tube (1); and the telescopic rod (22) is hingedly connected to one of the clamping arms (33) via a fourth axis (334).

6. The clamping device according to claim 3, characterized in that: Two mounting plates (11) are arranged at intervals on the outer circumference of the mounting tube (1) along the axial direction of the mounting tube (1), and the two ends of the first shaft (331) are respectively connected to the two mounting plates (11).

7. The clamping device according to claim 6, characterized in that Each of the arc-shaped plates (32) comprises two arc-shaped plate bodies (321), and the two arc-shaped plate bodies (321) are arranged at intervals along the axial direction of the second shaft (332) and are located between the two mounting plates (11).

8. The clamping device according to claim 7, characterized in that A mounting seat (12) for mounting the driving member (2) is provided on the outer periphery of the mounting cylinder (1), and the mounting seat (12) is located between the two arc-shaped plate bodies (321).

9. The clamping device according to claim 6, characterized in that: Each clamping arm (33) comprises two clamping plates (330), and the two clamping plates (330) are arranged at intervals along the axial direction of the first shaft (331).

10. An electrode extension robot, characterized in that: It comprises a machine body (4) and a clamping device as claimed in any one of claims 1 to 9 arranged on the machine body (4), wherein the mounting tube (1) of the clamping device is formed by the electrode tube of the electrode extension robot and is sleeved on the outer periphery of the electrode.

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