A kind of auxiliary welding device for repairing toothed disc of open-air crusher

Abstract

The present invention discloses an auxiliary welding device for repairing an open-air crusher toothed disc, which relates to the technical field of crusher toothed disc repair, and comprises a toothed disc body, a toothed disc bar arranged on the toothed disc body, large teeth and small teeth arranged on the toothed disc body and connected to the toothed disc bar, tooth holes arranged on the large teeth, and a repair block arranged on the large teeth; a tightening installation unit, comprising a penetration component arranged inside the tooth hole, and a displacement component arranged on the penetration component. The auxiliary welding device for repairing an open-air crusher toothed disc facilitates fixing the device on the damaged large teeth through the setting of the tightening installation unit, and assists in fixing the repair block through the setting of the auxiliary welding unit, thereby facilitating subsequent welding operations by the staff, and a single person can perform welding operations, which is convenient to operate and saves a certain amount of labor.

Description

Technical Field

[0001] The invention relates to the technical field of crusher toothed disc repair, and in particular to an open-air crusher toothed disc repair auxiliary welding device. Background Art

[0002] Long-term operation of open-pit mine self-propelled crusher will cause damage to the toothed disc, which will seriously affect the crushing effect of the material. As a result, materials with a large area are prone to belt tearing during transportation, so it is usually necessary to repair it. During the repair, the damaged bucket teeth are gas-cut off. Before the new bucket teeth are welded to the toothed disc, they need to be heated. The new bucket teeth are heated as a whole to reduce the cooling rate of the welded joint, avoid the formation of hardened structure and reduce welding stress and deformation. It is also an effective way to avoid welding cracks.

[0003] At present, most of the new bucket teeth are clamped by fire tongs and placed in the cutting groove, and then the staff performs welding. However, the high-temperature bucket teeth are difficult to fix, which affects the welding quality of the new bucket teeth. Therefore, an open-air crusher tooth disc repair auxiliary welding device is needed. Summary of the invention

[0004] In view of the problems existing in the above-mentioned existing open-air crusher toothed disc repair auxiliary welding device, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an auxiliary welding device for repairing a toothed disc of an open-air crusher, the purpose of which is to facilitate the auxiliary fixing of high-temperature bucket teeth.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a main unit, including a toothed disc body, a toothed disc bar arranged on the toothed disc body, large teeth and small teeth arranged on the toothed disc body and connected to the toothed disc bar, tooth holes arranged on the large teeth, and a repair block arranged on the large teeth;

[0007] The tightening installation unit comprises a penetration component arranged inside the tooth hole, a displacement component arranged on the penetration component, and a tightening component arranged on the penetration component and matched with the displacement component;

[0008] The auxiliary welding unit comprises a clamping assembly arranged on the repair block, a limiting assembly arranged on the clamping assembly, and a connecting assembly arranged between the clamping assembly and the penetration assembly.

[0009] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device described in the present invention, the penetration assembly includes a penetration tube arranged inside the tooth hole, a positioning ring arranged on the penetration tube and in contact with the large tooth, and a gripping rod arranged on the penetration tube, one end of the penetration tube is provided with a conical tip, and the outer surface of the penetration tube, the side close to the gripping rod and the outer surface of the positioning ring are both provided with threads.

[0010] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device described in the present invention, the displacement assembly includes a threaded ring arranged on the outer periphery of the through-tube, a connecting ring arranged on the outer periphery of the through-tube and connected to the threaded ring, and two movable grooves arranged on the through-tube.

[0011] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device described in the present invention, the displacement assembly also includes a movable part arranged inside the tube and cooperating with the movable groove, and a two-position distance adjusting part arranged on the movable part, and the movable part and the connecting ring are fixedly connected.

[0012] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device described in the present invention, the clamping assembly includes a plum blossom limiting hole arranged on the through tube, a clamping piece arranged inside the plum blossom limiting hole and in contact with the two-position distance adjusting piece, and a plum blossom limiting groove arranged on the clamping piece and adapted to the plum blossom limiting hole.

[0013] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device of the present invention, the number of the plum blossom limiting holes and the fastening members are both eight, and are circumferentially distributed on the outer surface of the tube.

[0014] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device of the present invention, the clamping assembly includes three pressure shafts arranged on the outer edge of the repair block, and a transverse rotating plate and an oblique rotating plate arranged between the three pressure shafts.

[0015] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device of the present invention, the clamping assembly further includes a protruding rod arranged on the transverse rotating plate and the oblique rotating plate, and a pressure tension spring arranged between the two protruding rods.

[0016] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device described in the present invention, the limiting assembly includes an arc strip arranged on the inclined rotating plate and located on the outer periphery of the pressure shaft, a semicircular groove arranged on the arc strip, and a positioning column arranged on the pressure shaft and adapted to the semicircular groove.

[0017] As a preferred solution of the open-air crusher toothed disc repair auxiliary welding device of the present invention, the connecting assembly includes a threaded ring arranged on the outer periphery of the positioning ring, and a connecting rod arranged on the threaded ring and connected to the transverse rotating plate.

[0018] The beneficial effects of the present invention are as follows: by setting the tightening installation unit, it is convenient to fix the device on the damaged large tooth; by setting the auxiliary welding unit, the repair block is assisted in fixing, thereby facilitating the subsequent welding operation by the staff; a single person can perform the welding operation, the operation is convenient, and a certain amount of labor is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the main unit of the present invention.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the supporting and mounting unit and the auxiliary welding unit of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the penetration component and the displacement component of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the bracing and mounting unit of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the displacement assembly of the present invention.

[0027] Figure 8 It is a schematic structural diagram of the fastening member and the plum blossom limiting groove of the present invention.

[0028] Fig. 9 For the present invention Figure 4 Schematic diagram of the structure at A in the middle.

[0029] In the figure: 100, main unit; 101, toothed disc body; 102, toothed disc bar; 103, large teeth; 104, small teeth; 105, tooth hole; 106, repair block; 200, support installation unit; 201, penetration assembly; 202, displacement assembly; 203, tightening assembly; 300, auxiliary welding unit; 301, clamping assembly; 302, limiting assembly; 303, connecting assembly; 201a, threading tube; 201b, positioning ring; 201c, gripping rod; 202a, thread Ring; 202b, connecting ring; 202c, movable groove; 202c-1, movable part; 202c-2, double-position distance adjusting part; 203a, plum blossom limiting hole; 203b, tightening part; 203c, plum blossom limiting groove; 301a, pressure shaft; 301b, horizontal rotating plate; 301c, oblique rotating plate; 301d, convex rod; 301e, pressure tension spring; 302a, arc strip; 302b, semicircular groove; 302c, positioning column; 303a, threaded ring; 303b, connecting rod. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth 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, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1, reference Figures 1 to 3, which is the first embodiment of the present invention, provides an open-air crusher toothed disc repair auxiliary welding device, the device comprising a main unit 100, including a toothed disc body 101, a toothed disc bar 102 arranged on the toothed disc body 101, a large tooth 103 and a small tooth 104 arranged on the toothed disc body 101 and connected to the toothed disc bar 102, a tooth hole 105 arranged on the large tooth 103, and a repair block 106 arranged on the large tooth 103; and a tightening installation unit 200, including a penetration component 201 arranged inside the tooth hole 105, a displacement component 202 arranged on the penetration component 201, and a tightening component 203 arranged on the penetration component 201 and matched with the displacement component 202; an auxiliary welding unit 300, including a clamping component 301 arranged on the repair block 106, a limiting component 302 arranged on the clamping component 301, and a connecting component 303 arranged between the clamping component 301 and the penetration component 201.

[0035] Among them, the top of the toothed disc body 101 is set in an arc shape, the number of toothed disc bars 102 is set in four, and is evenly distributed on the arc surface of the top of the toothed disc body 101, the large teeth 103 and the small teeth 104 are arranged on the four toothed disc bars 102 at intervals, and the large teeth 103 and the small teeth 104 on the same toothed disc bar 102 are staggered, and only the large teeth 103 are provided with tooth holes 105; when the device crushes the object, since the large teeth 103 are larger than the small teeth 104, the large teeth 103 are more likely to be damaged than the small teeth 104 in long-term crushing work; the repair block 106 is made of the same material as the large teeth 103. When the large teeth 103 are damaged and need to be repaired, the damaged part of the large teeth 103 is generally cut first to make the damaged part more regular, and then the repair block 106 with a similar shape is welded to it to complete the repair work.

[0036] Before welding the bucket teeth, dirt, rust and residue need to be removed. In addition, before welding, it is necessary to carefully check for cracks or defects. Then, the weldment should be heated before welding to heat the weldment as a whole, reduce the cooling rate of the weld joint, avoid the formation of hardened structure and reduce welding stress and deformation. It is also an effective method to avoid welding cracks. Post-welding heating is a slow cooling measure for the welded workpiece, which is not only for slow cooling but also for hydrogen removal. A certain post-heating temperature can diffuse hydrogen in the weld and prevent it from agglomerating and causing cracks. At the same time, the electrode is heated to 200℃ for insulation, the welding core is preheated, and the weldability of the electrode is enhanced. In order to improve the welding quality and extend the service life of the repaired workpiece, heat treatment must be added to the entire repair process. The heat treatment process is: 1. Preheat at 280℃ before welding and keep warm for 1h; 2. Heat at 200℃ for 2h after welding and cool slowly after taking out of the furnace; 3. Heat the electrode at 200℃ for insulation. The implementation of this process can effectively avoid the above welding defects.

[0037] During use, the device as a whole can be fixedly installed in the tooth hole 105 inside the large tooth 103 that needs to be repaired through the penetration component 201, the displacement component 202 and the tightening component 203, and then through the coordinated setting of the clamping component 301, the limiting component 302 and the connecting component 303, the repair block 106 can be firmly fixed on the damaged part of the large tooth 103 that needs to be repaired, so as to carry out subsequent welding repair operations.

[0038] Example 2, reference Figures 1 to 8 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the penetration component 201 includes a tube 201a arranged inside the tooth hole 105, a positioning ring 201b arranged on the tube 201a and in contact with the large teeth 103, and a gripping rod 201c arranged on the tube 201a, one end of the tube 201a is a conical tip, and the outer surface of the tube 201a close to the gripping rod 201c and the outer surface of the positioning ring 201b are both provided with threads; wherein, the positioning ring 201b is fitted with the side opposite to the large teeth 103, and as the tube 201a enters the tooth hole 105, the next step is determined by observing whether the positioning ring 201b is fitted with the large teeth 103, and when the positioning ring 201b is fitted with the large teeth 103, it means that the threaded ring 202a can be rotated to complete the subsequent fixing operation.

[0039] Further, the displacement assembly 202 includes a threaded ring 202a arranged on the outer periphery of the tube 201a, a connecting ring 202b arranged on the outer periphery of the tube 201a and connected to the threaded ring 202a, and two movable grooves 202c arranged on the tube 201a; wherein the threaded ring 202a is threadedly connected to the outer surface of the tube 201a, the connecting ring 202b is sleeved on the outer periphery of the tube 201a, and the threaded ring 202a and the connecting ring 202b are rotatably connected through a bearing; the two movable grooves 202c are respectively opened at the top and bottom of the outer surface of the tube 201a, and the movable grooves 202c are located at the threads of the tube 201a;

[0040] Furthermore, the displacement assembly 202 also includes a movable member 202c-1 arranged inside the tube 201a and cooperating with the movable groove 202c, and a double-position distance adjusting member 202c-2 arranged on the movable member 202c-1, and the movable member 202c-1 and the connecting ring 202b are fixedly connected; wherein, the top and bottom of the movable member 202c-1 are both provided with protrusions slidably connected to the movable groove 202c, and the protrusions penetrate the movable groove 202c and are fixedly connected to the inner wall of the connecting ring 202b. Since the threaded ring 202a and the connecting ring 202b are rotatably connected, the threaded ring 202a When rotating, the connecting ring 202b will be driven to rotate synchronously. However, by setting the movable groove 202c and the movable part 202c-1, the moving direction of the connecting ring 202b and the movable part 202c-1 can be limited when the threaded ring 202a rotates, so that it can only move along the movable groove 202c but cannot follow the rotation of the threaded ring 202a, thereby facilitating the movement of the double-position distance adjusting part 202c-2 and completing the subsequent fixing operation; the double-position distance adjusting part 202c-2 is composed of two bidirectional cones, and the position of the clamping component 203 can be adjusted through the inclined surface of its surface to achieve fixed installation of the entire device.

[0041] Furthermore, the tightening assembly 203 includes a plum blossom limiting hole 203a arranged on the tube 201a, a tightening member 203b arranged inside the plum blossom limiting hole 203a and in contact with the double-position distance adjusting member 202c-2, and a plum blossom limiting groove 203c arranged on the tightening member 203b and adapted to the plum blossom limiting hole 203a; wherein, the plum blossom limiting hole 203a is opened on the outer surface of the tube 201a, and the tightening member 203b is slidably connected with the plum blossom limiting hole 203a through the plum blossom limiting groove 203c; through the coordinated arrangement of the plum blossom limiting hole 203a and the plum blossom limiting groove 203c, the tightening member 203b can be prevented from falling off or detaching from the tube 201a even if it is not supported by the double-position distance adjusting member 202c-2.

[0042] Furthermore, the number of the plum blossom limiting holes 203a and the tightening pieces 203b is set to eight, and they are circumferentially distributed on the outer surface of the tube 201a; wherein, the eight plum blossom limiting holes 203a and the tightening pieces 203b are divided into two groups, and the number of the two groups of plum blossom limiting holes 203a and the tightening pieces 203b are both distributed in a circle to four. By setting the two groups separately, the firmness and stability of the fixation between the tube 201a and the inner wall of the tooth hole 105 can be increased.

[0043] During use, first align the position and insert the tube 201a into the tooth hole 105 on the large tooth 103 to be repaired. The tube 201a is inserted until the positioning ring 201b is in contact with the surface of the large tooth 103, and then the connecting component 303 is rotated to make the clamping component 301 rotate counterclockwise until it is in contact with the repair block 106. At this time, the rotating threaded ring 202a drives the connecting ring 202b, the movable part 202c-1 and the double-position adjustable distance member 202c-2 to move toward one end of the pointed end of the tube 201a. Since the surface of the double-position adjustable distance member 202c-2 is an annular inclined surface, when it moves, the surrounding tightening members 203b are gradually squeezed as the inclined surface moves, so that the surrounding tightening members 203b all slide in the plum blossom limiting groove 203c until they are completely pressed against the inner wall of the tooth hole 105, thereby completing the fixed installation of the tube 201a.

[0044] The remaining structures are the same as those of Example 1.

[0045] Example 3, reference Figure 6 and Fig. 9 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the clamping assembly 301 includes three pressure shafts 301a arranged on the outer edge of the repair block 106, and a horizontal rotating plate 301b and an oblique rotating plate 301c arranged between the three pressure shafts 301a; wherein the three pressure shafts 301a are arranged in a triangle, the upper two pressure shafts 301a are respectively located on the left side and the middle of the top of the repair block 106, and the other pressure shaft 301a is located on the side of the repair block 106, and the three pressure shafts 301a are all tightly attached to the surface of the repair block 106, the horizontal rotating plate 301b and the oblique rotating plate 301c are the same length, and the length of the top of the repair block 106 is set as a, and the adjacent two pressure shafts 301a are arranged in a triangle. The distance between the force axes 301a is b, then b is less than half of a and greater than one quarter of a. If b is greater than half, the middle pressure axis 301a will be suspended, affecting the fixing effect of the device. If b is less than one quarter of a, the bottom pressure axis 301a will not be able to rotate to the side of the repair block 106, affecting the fixing effect of the device. When the lateral rotating plate 301b and the oblique rotating plate 301c assist in fixing the repair block 106, the pressure axis 301a on the lateral rotating plate 301b is respectively located on the left side and the middle of the repair block 106. By applying pressure and fixing the middle of the repair block 106 through the pressure axis 301a, the firmness of the auxiliary fixation of the repair block 106 can be further enhanced.

[0046] Furthermore, the clamping assembly 301 further comprises a protruding rod 301d arranged on the transverse rotating plate 301b and the oblique rotating plate 301c, and a pressure tension spring 301e arranged between the two protruding rods 301d; wherein the two protruding rods 301d are respectively fixedly connected to one side of the transverse rotating plate 301b and the oblique rotating plate 301c, and the pressure tension spring 301e is connected between the two protruding rods 301d, and the arrangement of the pressure tension spring 301e enables a certain aggregation tension between the transverse rotating plate 301b and the oblique rotating plate 301c, thereby facilitating the fixing operation of the repair block 106;

[0047] Furthermore, the limiting assembly 302 includes an arc strip 302a disposed on the obliquely rotating plate 301c and located on the periphery of the pressure shaft 301a, a semicircular groove 302b disposed on the arc strip 302a, and a positioning column 302c disposed on the pressure shaft 301a and adapted to the semicircular groove 302b; wherein the arc strip 302a and the positioning column 302c are both on the same circumferential path with the pressure shaft 301a on the left side of the top of the repair block 106 as the center, and thus when the obliquely rotating plate 301c rotates, the positioning column 302c can just enter the semicircular groove 302b, and the positioning column 302c is fixedly connected to the pressure shaft 301a on the left side of the top of the repair block 106 through a U-shaped rod;

[0048] When the positioning column 302c is in the semicircular groove 302b, the oblique rotating plate 301c is tilted upward and forms an angle with the horizontal rotating plate 301b, thereby releasing the fixation of the repair block 106 and taking the device out of the tooth hole 105.

[0049] Furthermore, the connecting assembly 303 includes a threaded ring 303a arranged on the outer periphery of the positioning ring 201b, and a connecting rod 303b arranged on the threaded ring 303a and connected to the transverse rotating plate 301b; wherein the threaded ring 303a and the positioning ring 201b are threadedly connected, and the two ends of the connecting rod 303b are fixedly connected to the threaded ring 303a and the transverse rotating plate 301b respectively; after the repair welding work of the repair block 106 is completed, the staff adjusts the state of the oblique rotating plate 301c from a downward tilt to an upward tilt, so that the positioning column 302c is in the semicircular groove 302b, and then the auxiliary welding unit 300 can be driven to rotate upward as a whole by rotating the threaded ring 303a, so that the auxiliary welding unit 300 is separated from the repair block 106 as a whole.

[0050] During use, when the repair welding work of the repair block 106 is completed, the staff directly kicks the oblique rotating plate 301c upward with their feet to adjust it from a downwardly tilted state to an upwardly tilted state. Since the oblique rotating plate 301c is limited by the tension of the pressure tension spring 301e, after the staff kicks it upward, the oblique rotating plate 301c rotates upward to a certain angle, and the positioning column 302c is stuck in the semicircular groove 302b to limit the upward tilt position of the oblique rotating plate 301c, and the pressure tension spring 301e is used to adjust the oblique rotating plate 301c from a downwardly tilted state to an upwardly tilted state. e is set, so that after the angle of the oblique rotating plate 301c is changed, a certain pressure is applied to maintain the current angle and state. When the oblique rotating plate 301c is tilted upward, the threaded ring 303a is rotated in the opposite direction to drive the connecting rod 303b, the horizontal rotating plate 301b, the oblique rotating plate 301c, the three pressure shafts 301a and other structures to rotate and open together, detach from the repair block 106, and then the threaded ring 202a is rotated in the opposite direction to make the fastening member 203b gradually loosen and no longer fit the inner wall of the tooth hole 105, so that the device can be taken out.

[0051] The remaining structure is the same as that of Example 2.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims. In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiment (i.e., those features that are not relevant to the best mode currently contemplated for carrying out the invention, or those features that are not relevant to implementing the invention) may be described.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An auxiliary welding device for repairing toothed disc of an open-air crusher, characterized in that: include, The main body unit (100) comprises a toothed disc body (101), a toothed disc bar (102) arranged on the toothed disc body (101), large teeth (103) and small teeth (104) arranged on the toothed disc body (101) and connected to the toothed disc bar (102), tooth holes (105) arranged on the large teeth (103), and a repair block (106) arranged on the large teeth (103); The tightening installation unit (200) comprises a penetration component (201) arranged inside the tooth hole (105), a displacement component (202) arranged on the penetration component (201), and a tightening component (203) arranged on the penetration component (201) and cooperating with the displacement component (202); An auxiliary welding unit (300) comprises a clamping assembly (301) arranged on the repair block (106), a limiting assembly (302) arranged on the clamping assembly (301), and a connecting assembly (303) arranged between the clamping assembly (301) and the penetration assembly (201); The penetration assembly (201) comprises a tube (201a) arranged inside the tooth hole (105), a positioning ring (201b) arranged on the tube (201a) and in contact with the large tooth (103), the positioning ring (201b) being fitted with a side opposite to the large tooth (103), and a gripping rod (201c) arranged on the tube (201a), one end of the tube (201a) being provided with a conical tip, and a side of the outer surface of the tube (201a) close to the gripping rod (201c) and an outer surface of the positioning ring (201b) being provided with threads.

2. The open-air crusher toothed disc repair auxiliary welding device according to claim 1 is characterized in that: The displacement assembly (202) comprises a threaded ring (202a) arranged on the outer circumference of the threading tube (201a), a connecting ring (202b) arranged on the outer circumference of the threading tube (201a) and connected to the threaded ring (202a), and two movable grooves (202c) arranged on the threading tube (201a).

3. The open-air crusher toothed disc repair auxiliary welding device according to claim 2 is characterized in that: The displacement component (202) further comprises a movable part (202c-1) arranged inside the threading tube (201a) and cooperating with the movable groove (202c), and a double-position distance adjusting part (202c-2) arranged on the movable part (202c-1); the movable part (202c-1) and the connecting ring (202b) are fixedly connected.

4. The open-air crusher toothed disc repair auxiliary welding device according to claim 3 is characterized in that: The clamping assembly (203) comprises a plum blossom limiting hole (203a) arranged on the threading tube (201a), a clamping piece (203b) arranged inside the plum blossom limiting hole (203a) and in contact with the double-position distance adjusting piece (202c-2), and a plum blossom limiting groove (203c) arranged on the clamping piece (203b) and adapted to the plum blossom limiting hole (203a).

5. The open-air crusher toothed disc repair auxiliary welding device according to claim 4 is characterized in that: The number of the plum blossom limiting holes (203a) and the abutting members (203b) is eight and they are circumferentially distributed on the outer surface of the tube (201a).

6. The open-air crusher toothed disc repair auxiliary welding device according to claim 5 is characterized in that: The clamping assembly (301) comprises three pressure shafts (301a) arranged on the outer edge of the repair block (106), and a transverse rotating plate (301b) and an oblique rotating plate (301c) arranged between the three pressure shafts (301a).

7. The open-air crusher toothed disc repair auxiliary welding device according to claim 6 is characterized in that: The clamping assembly (301) further comprises a protruding rod (301d) arranged on the transverse rotating plate (301b) and the oblique rotating plate (301c), and a pressure tension spring (301e) arranged between the two protruding rods (301d).

8. The open-air crusher toothed disc repair auxiliary welding device according to claim 7 is characterized in that: The limiting assembly (302) comprises an arc strip (302a) arranged on the oblique rotating plate (301c) and located on the periphery of the pressure shaft (301a), a semicircular groove (302b) arranged on the arc strip (302a), and a positioning column (302c) arranged on the pressure shaft (301a) and adapted to the semicircular groove (302b).

9. The open-air crusher toothed disc repair auxiliary welding device according to claim 8, characterized in that: The connection assembly (303) comprises a threaded ring (303a) arranged on the outer periphery of the positioning ring (201b), the threaded ring (303a) and the positioning ring (201b) being threadedly connected, and a connection rod (303b) arranged on the threaded ring (303a) and connected to the transverse rotating plate (301b).

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