Welding equipment for mine mill liner production

Abstract

The present application relates to the technical fields of welding equipment, and discloses a welding equipment for mine grinding machine lining plate production, in order to solve the problem of welding seam leakage and the difficulty of lining plate positioning, the positioning groove in the middle of the parent lining plate is used to enable the welding assembly to be welded along the inner side of the parent lining plate, and the welding seam is placed on the inner side of the parent lining plate, then the positioning lining plate on the child lining plate is placed in the positioning groove on the parent lining plate, on the one hand, according to the shielding and covering of the positioning lining plate, the welding seam on the parent lining plate is hidden inside, so that it will not directly contact the ore in the grinding cylinder; on the other hand, according to the positioning of the positioning lining plate in the positioning groove and the child lining plate, then the welding assembly is welded along the inner side of the positioning groove on the child lining plate, and after the welding is completed, the next positioning lining plate is placed in the positioning groove of the child lining plate, and the process is repeated, finally, the effect of internal hiding of the welding seam and self-positioning of the child and parent lining plates is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, and particularly relates to a welding equipment for mine grinding machine lining plate production. BACKGROUND

[0002] In the complex process of mineral processing, the mine grinding machine occupies a pivotal position, which is the core key equipment for realizing the fine grinding of ore. Its working principle is to use steel balls as grinding medium. When the cylinder starts to rotate, the steel balls roll and collide in the cylinder, and by means of the strong impact force, extrusion force and grinding action generated thereby, the originally larger ore is gradually broken until the appropriate particle size meeting the subsequent processing requirements is obtained.

[0003] Among the many components of the mine grinding machine, the installation method of the lining plate is crucial. At present, the industry generally adopts the bolt fastening method for the installation of the lining plate. However, in actual application scenarios, especially in high impact working conditions, such as in the coarse grinding stage of ore, this bolt connection method exposes many drawbacks. On the one hand, under the action of high intensity impact, the bolt is prone to loosening. Once the bolt is loosened, the lining plate will be displaced, and in severe cases, it will even directly fall off, affecting the normal operation of the grinding machine. On the other hand, due to the particularity of the bolt connection part, the force borne by the lining plate is concentrated around the bolt hole. This uneven force condition will further aggravate the displacement of the lining plate, reducing the stability and service life of the lining plate. Therefore, in order to meet the special needs of high impact working conditions, the industry generally adopts the welding fixation method for the lining plate in such working conditions to ensure that the lining plate can be firmly installed on the grinding cylinder.

[0004] However, in the actual welding operation process, the applicant found through practice that the current common lining plate structure in the market is relatively simple, while the inside of the grinding cylinder presents an arc structure. This difference in structure leads to the need for precise positioning operation when welding the lining plate. Any deviation may affect the welding quality of the lining plate, and thus affect the performance of the entire grinding machine. Moreover, the existing lining plate also has obvious limitations in welding method. At present, the lining plate can only be welded and connected with the cylinder through its outer edge. This means that during the operation of the grinding machine, when the ore and the internal grinding medium (such as steel balls) are constantly tumbling in the cylinder, continuous and strong impact on the welded part of the lining plate will occur. This continuous impact force is easy to cause the welded part to be detached. Once detached, the stability of the lining plate will be seriously affected, thereby greatly shortening the service life of the lining plate after welding, increasing the maintenance cost and downtime of the equipment. SUMMARY

[0005] The present application provides a kind of welding equipment for mine grinder lining plate production, with the advantages of weld internal hiding and sub-mother lining plate self-positioning, to solve the problems of weld leakage and lining plate difficult to position when lining plate is welded in the above background art.

[0006] To achieve the above object, the present application adopts the following technical solution: a kind of welding equipment for mine grinder lining plate production, comprising: grinding cylinder, according to support installation limit;Welding assembly is used to weld the lining plate in the interior of grinding cylinder;Lining plate is divided into mother lining plate and sub lining plate, and the middle part of mother lining plate and sub lining plate is provided with positioning groove, and the side of sub lining plate is fixedly installed with the positioning lining plate consistent with the structure of positioning groove;Mother lining plate is pasted to the inner wall of grinding cylinder, and welding assembly moves along the positioning groove in the inner side of mother lining plate, and realizes the welding of mother lining plate and grinding cylinder, and the weld position is located in the inner side of mother lining plate;The positioning lining plate on the sub lining plate is placed in the positioning groove of the mother lining plate that has been welded, to realize the shielding of mother lining plate and grinding cylinder weld and the installation limit of sub lining plate.

[0007] Further, the inner side of mother lining plate and sub lining plate is provided with a plurality of ribs for increasing the welding area with grinding cylinder.

[0008] Further, the positioning lining plate on the sub lining plate is placed in the positioning groove on the welded sub lining plate, to realize the hiding of weld on the welded sub lining plate and the installation limit of the next sub lining plate.

[0009] Further, the lining plate further comprises a tail sealing lining plate with the same structure as the positioning lining plate, which is installed in the positioning groove to shield the weld on the sub lining plate.

[0010] Further, the bottom of the tail sealing lining plate is fixedly installed with a detection shaft rod penetrating out of the grinding cylinder, and the side of the detection shaft rod is fixedly installed with a pressing seat located outside the grinding cylinder.

[0011] Further, the cross-sectional shape of the detection shaft rod is oval.

[0012] Further, a spring is arranged between the pressing seat and the grinding cylinder, which pushes the pressing seat to make the detection shaft rod pull the tail sealing lining plate to always stick to the positioning groove of the sub lining plate.

[0013] Further, a guide groove is arranged in the inner side of the grinding cylinder and communicates with the positioning groove in the mother lining plate / sub lining plate, and a detection switch is fixedly installed on one side of the end of the pressing seat, which is connected with the control unit, and the control unit realizes alarm after receiving the signal when the detection switch is turned on.

[0014] Further, the guide groove is an inclined groove, and the depth of the inclined groove near the tail sealing lining plate is the largest.

[0015] The present application has the following beneficial effects:

[0016] The application provides a welding equipment for mine grinder lining plate production, which is divided into two forms of mother lining plate and daughter lining plate through the mine grinder lining plate, a positioning groove is formed in the middle of the daughter lining plate and the mother lining plate, and when the welding work is started, the welding assembly moves along the inner side of the mother lining plate and performs the welding operation.

[0017] After the preliminary welding of the mother lining plate is completed, the installation and welding of the daughter lining plate are entered. The positioning lining plate is arranged on the daughter lining plate, and the size and shape of the positioning lining plate are matched with the positioning groove on the mother lining plate. The positioning lining plate on the daughter lining plate is placed in the positioning groove on the mother lining plate. On the one hand, the positioning lining plate completely covers the weld on the mother lining plate, so that the weld is hidden in the internal space of the daughter lining plate, thereby avoiding direct contact with the ore in the grinding cylinder. Through the hidden design, the durability and reliability of the lining plate are greatly improved.

[0018] On the other hand, after the positioning lining plate is clamped into the positioning groove, the positioning lining plate can be accurately positioned. After positioning is completed, the welding assembly is welded along the inner side of the positioning groove arranged on the daughter lining plate. When the welding of a daughter lining plate is completed, the positioning lining plate of the next daughter lining plate is placed in the positioning groove of the welded daughter lining plate, and the welding operation is sequentially and circularly performed. This circular welding mode not only ensures that each weld can be perfectly hidden in the lining plate, but also continuously limits the daughter lining plate during the welding process, so that the daughter lining plate can be accurately positioned along the inner side of the grinding cylinder in the axial direction, and the offset or misalignment of the daughter lining plate can be avoided.

[0019] Through the welding process, the welding equipment finally realizes the significant effects of internal weld hiding and self-positioning of the daughter lining plate and the mother lining plate. This not only improves the overall quality of the mine grinder lining plate, reduces the number of failures and maintenance caused by the exposure of the weld, but also improves the production efficiency and reduces the production cost, thereby providing a strong guarantee for the stable operation and long-term use of the mine grinder. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application.

[0021] Referring to the drawings, the present application can be more clearly understood in connection with the following detailed description, wherein:

[0022] Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the application;

[0023] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the grinding cylinder of the application;

[0024] Figure 3The overall internal plane structure schematic diagram of the application;

[0025] Figure 4 The overall internal plane structure schematic diagram of the application Figure 3 The enlarged structure schematic diagram of the part at E in the application;

[0026] Figure 5 The explosion state schematic diagram between the child and the mother lining plate in the application;

[0027] Figure 6 The three-dimensional structure schematic diagram of the mother lining plate in the application;

[0028] Figure 7 The three-dimensional structure schematic diagram of the child lining plate in the application;

[0029] Figure 8 The three-dimensional structure schematic diagram of the tail lining plate in the application;

[0030] Figure 9 The welding part schematic diagram between the child and the mother lining plate in the application.

[0031] In the figure: 1, support; 2, grinding cylinder; 200, flow guide groove; 3, conductive ring; 300, detection switch; 4, detection shaft; 5, mother lining plate; 6, child lining plate; 601, positioning lining plate; 7, tail lining plate; 8, welding assembly; 9, rib; 10, positioning groove; 11, pressing seat; 110, spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0033] Embodiment one, please refer to Figure 1 and Figure 2 It can be seen that the grinding cylinder 2 to be welded is placed on the support 1, and the support 1 is used for mounting and limiting the grinding cylinder 2. The welding assembly 8 arranged on one side of the support 1 can weld the lining plate in the interior of the grinding cylinder 2. The welding assembly 8 mainly includes a mechanical arm welding gun, mainly including a gun body, an electrical control system, a cooling system, a wire feeding mechanism, a protective gas delivery device and a mechanical arm joint module and other key components. In the actual use process, the welding assembly 8 can be used for guaranteeing the welding work of the lining plate.

[0034] According to Figure 2 , Figures 5-7As can be seen, the liner is divided into a mother liner 5 and a child liner 6, and the middle part of the mother liner 5 and the child liner 6 is provided with a positioning groove 10, which is a rectangular groove. The number of the mother liner 5 and the child liner 6 is multiple, and the specific number can be determined according to the actual size of the cylinder. When the mother liner 5 and the child liner 6 need to be welded inside the grinding cylinder 2, the mother liner 5 is first arranged at one end of the inner side of the grinding cylinder 2, at this time, the mother liner 5 is attached to the inner wall of the grinding cylinder 2. Then, the welding assembly 8 moves along the positioning groove 10 on the inner side of the mother liner 5, so that the mother liner 5 and the grinding cylinder 2 are welded, and the welding position is located on the inner side of the mother liner 5. In the actual application process, a plurality of ribs 9 are arranged on the inner side of the mother liner 5 and the child liner 6, so as to increase the welding area between the mother liner 5 / child liner 6 and the grinding cylinder 2. In detail, refer to Figure 9 The black bold part is the actual welding position. As can be seen, the ribs 9 increase the weldable position between the mother liner 5 / child liner 6 and the grinding cylinder 2, which ensures that the mother liner 5 / child liner 6 can be stably welded on the inner side of the grinding cylinder 2.

[0035] After the mother liner 5 is welded, the operator can weld the child liner 6. The positioning of the mother liner 5 is different from that of the child liner 6. The positioning groove 10 on the mother liner 5 is first placed on the positioning groove 10 on the mother liner 5, and then the welding assembly 8 moves along the positioning groove 10 on the inner side of the child liner 6, so that the child liner 6 is welded on the inner side of the grinding cylinder 2. Figure 5 and Figure 7 As can be seen from the above, the side part of the child liner 6 is fixedly provided with a positioning liner 601, and the shape and structure of the positioning liner 601 and the positioning groove 10 are consistent. When the positioning liner 601 on the child liner 6 is placed in the positioning groove 10 on the mother liner 5, the positioning liner 601 blocks the positioning groove 10, thereby shielding the welding seam on the inner side of the mother liner 5. Because the mother liner 5 and the child liner 6 need to withstand the impact of the ore or grinding medium in the grinding cylinder 2 during application, the positioning liner 601 hides the welding seam in the mother liner 5, thereby avoiding the direct impact of the welding seam on the ore and the grinding medium, and ultimately avoiding the phenomenon of welding separation due to impact. Furthermore, the positioning liner 601 is embedded in the positioning groove 10 on the mother liner 5, thereby limiting the installation of the child liner 6. After the child liner 6 is attached to the inner wall of the grinding cylinder 2, the welding assembly 8 is used to weld along the positioning groove 10 on the inner side of the child liner 6, so that the child liner 6 is welded on the inner side of the grinding cylinder 2.

[0036] Finally, the positioning liner 601 on the next child liner 6 is placed in the positioning groove 10 on the child liner 6 that has been welded, thereby hiding the welding seam on the child liner 6 that has been welded, and the positioning liner 601 also limits the next child liner 6, which is cycled to ensure that the child liner 6 can be accurately placed axially along the inner wall of the grinding cylinder 2, thereby achieving the purpose of self-positioning of the child liner 6.

[0037] Example two is further improved on the basis of example one, please refer toFigure 4 , Figure 5 and Figure 8 It can be seen that the liner also includes a tail-sealing liner 7, which has the same structure as the positioning liner 601. In this way, after the last sub-liner 6 is welded, the tail-sealing liner 7 is installed in the positioning groove 10, thereby sealing the positioning groove 10 on the last sub-liner 6.

[0038] Regarding the method of fixing the end cap liner 7, from Figure 3 , Figure 4 and Figure 8 As can be seen, a detection shaft 4 passing through the grinding cylinder 2 is fixedly installed at the bottom of the end cap liner 7. The cross-sectional shape of the detection shaft 4 is preferably elliptical. In this way, the end cap liner 7 is placed in the positioning groove 10 on the sub-liner 6 by means of the restriction of the detection shaft 4. A pressure seat 11 located on the outer side of the grinding cylinder 2 is fixedly installed on the side of the detection shaft 4, and the movement of the detection shaft 4 can be restricted by the pressure seat 11.

[0039] More specifically, a spring 110 is installed between the pressure seat 11 and the grinding cylinder 2. Under the action of the spring force, the detection shaft 4 pulls the sealing liner 7 so that it always tends to adhere to the sub-liner 6, ensuring that the sealing liner 7 seals the positioning groove 10 on the sub-liner 6. Furthermore, from... Figure 3 , Figure 4 and Figure 9 It can be seen that the inner side of the grinding cylinder 2 has a guide groove 200 that communicates with the positioning groove 10 in the mother liner 5 / daughter liner 6. The guide groove 200 is an inclined groove, and the inclined groove near the end liner 7 has the greatest depth. A detection switch 300 is fixedly installed on the side of the grinding cylinder 2, located on one side of the end of the pressure seat 11. When the end liner 7 pulls the detection shaft 4 away from the daughter liner 6, the pressure seat 11 can finally abut against the detection switch 300. The detection switch 300 is generally connected to the control unit. When the detection switch 300 is turned on, the control unit receives the signal and triggers an alarm. In detail, for the power supply of the detection switch 300, a conductive ring 3 is provided on the side of the grinding cylinder 2, and an external brush (not shown) is provided in conjunction with it. When the grinding cylinder 2 rotates, the brush is always in contact with the conductive ring 3, thereby ensuring power supply to the detection switch 300.

[0040] In practical applications, when the sub-liner 6 and end-sealing liner 7 inside the grinding cylinder 2 are installed and put into use, under normal conditions, the main liner 5, sub-liner 6, and end-sealing liner 7 are attached together, so the guide channel 200 is not connected to the inside of the grinding cylinder 2. Therefore, when the grinding cylinder 2 rotates and uses the grinding media to crush the ore, no ore will enter the guide channel 200.

[0041] If the sub-liner 6 is damaged or de-welded during long-term use, the positioning liner 601 will not be tightly blocked to the positioning groove 10, and the fine ore after grinding will enter the guide groove 200 according to the leakage position. When the guide groove 200 is at the lowest position, it is affected by the slope, so that the ore has a tendency to move towards the tail sealing liner 7. Then, after the grinding cylinder 2 rotates 180°, the guide groove 200 with the ore moves to the uppermost position and is located above the tail sealing liner 7. The ore presses the tail sealing liner 7 and makes it move away from the sub-liner 6. At this time, the detection shaft rod 4 pulls the pressing seat 11 to press the spring 110, the pressing seat 11 reaches the detection switch 300, the detection switch 300 sends an electrical signal to the control unit, the control unit alarms to alert the operator that the liner inside the grinding cylinder 2 is damaged, such as de-welding or damage, and needs to be repaired.

Claims

1. A welding equipment for producing liners for mining grinding mills, characterized in that, include: The grinding cylinder (2) is installed and positioned according to the bracket (1); Welding assembly (8) is used to weld the liner inside the grinding cylinder (2); The liner is divided into a mother liner (5) and a daughter liner (6), and a positioning groove (10) is provided in the middle of both the mother liner (5) and the daughter liner (6). A positioning liner (601) with the same structure as the positioning groove (10) is fixedly installed on the side of the daughter liner (6). The mother liner (5) is attached to the inner wall of the grinding cylinder (2), and the welding assembly (8) moves along the positioning groove (10) on the inner side of the mother liner (5) to achieve welding of the mother liner (5) and the grinding cylinder (2), and the weld is located on the inner side of the mother liner (5); the positioning liner (601) on the sub-liner (6) is placed in the positioning groove (10) of the already welded mother liner (5) to achieve shielding of the weld between the mother liner (5) and the grinding cylinder (2) and to limit the installation of the sub-liner (6); The liner also includes a tailing liner (7) with the same structure as the positioning liner (601). The tailing liner (7) is installed in the positioning groove (10) to cover and hide the weld on the sub-liner (6). The bottom of the end cap liner (7) is fixedly installed with a detection shaft (4) that passes through the grinding cylinder (2), and a pressure seat (11) located on the outside of the grinding cylinder (2) is fixedly installed on the side of the detection shaft (4). A spring (110) is provided between the pressure seat (11) and the grinding cylinder (2). The spring (110) pushes the pressure seat (11) so that the detection shaft (4) pulls the sealing liner (7) to always be attached to the positioning groove (10) of the sub-liner (6); The grinding cylinder (2) has a guide groove (200) that communicates with the positioning groove (10) in the mother liner (5) / daughter liner (6) on the inner side, and a detection switch (300) located on the side of the pressure seat (11) is fixedly installed on the side of the grinding cylinder (2). The detection switch (300) is connected to the control unit. After the detection switch (300) is turned on, the control unit receives the signal and sets up an alarm. The guide channel (200) is an inclined channel, and the inclined channel near the end cap liner (7) has the greatest depth.

2. The welding equipment for producing liners of mining grinding mills according to claim 1, characterized in that, Both the mother liner (5) and the daughter liner (6) have several ribs (9) on their inner sides to increase the welding area with the grinding cylinder (2).

3. The welding equipment for producing liners of mining grinding mills according to claim 1, characterized in that, The positioning plate (601) on the sub-liner (6) is placed in the positioning groove (10) on the already welded sub-liner (6) to achieve the concealment of the weld on the already welded sub-liner (6) and the installation limit of the next sub-liner (6).

4. The welding equipment for producing liners of a mining grinding mill according to claim 1, characterized in that, The cross-sectional shape of the detection shaft (4) is elliptical.

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