A semi-automatic welding equipment for coal feeder production

Abstract

This invention relates to the field of processing equipment technology and provides a semi-automatic welding device for coal feeder production. It includes: a support base for support; a moving mechanism mounted on the support base; a welding torch mounted at the output end of the moving mechanism, which drives the welding torch to reciprocate and move up and down; a welding head mounted on the welding torch; and a preheating and cleaning component, detachably mounted on the welding torch, used for preheating and cleaning the welding bevel. In this invention, the welding torch moves along the bevel direction under the action of the moving mechanism, the preheating and cleaning component performs preheating and cleaning in front, and the welding torch performs welding behind, thus reducing heat loss. Simultaneously, several guide tubes are at the same height as their corresponding preheating and cleaning positions, ensuring consistent preheating temperatures at each bevel surface position, guaranteeing welding quality. Furthermore, the hot air pressure emitted from each position is basically consistent, allowing for effective cleaning at each position and improving the cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of processing equipment technology, specifically a semi-automatic welding equipment for coal feeder production. Background Technology

[0002] The coal feeder is located between the raw coal hopper and the coal mill. In a direct-fired pulverizing system, the coal feed rate is directly adapted to the boiler load. There are various types of coal feeders, categorized by structural characteristics and working principle as volumetric and gravity feeders. Coal from the coal storage bin enters the feeder through a coal gate and is continuously and evenly conveyed to the coal mill by a conveyor belt inside the feeder. An electronic weighing device is installed below the conveyor belt, primarily consisting of a high-precision electronic belt scale. The weighing sensor generates an electrical signal proportional to the weight of the coal, and a speed sensor detects the belt speed signal. These signals are simultaneously fed into an integrator, which calculates the instantaneous flow rate and cumulative quantity.

[0003] Semi-automatic welding equipment is required in the production process of coal feeders. Some materials need to be preheated during the welding process. However, existing technologies usually separate preheating and welding into two separate processes, which requires the workpiece to be transferred between two workstations. This transfer process results in a certain amount of heat loss. In order to solve this technical problem, a semi-automatic welding equipment for coal feeder production is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a semi-automatic welding device for coal feeder production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A semi-automatic welding equipment for coal feeder production includes: a support base for support;

[0007] The moving mechanism is mounted on the support base;

[0008] A welding torch is installed at the output end of the moving mechanism, which drives the welding torch to reciprocate and move up and down; a welding head is provided on the welding torch.

[0009] A preheating and cleaning component is detachably mounted on the welding torch. The preheating and cleaning component is used to preheat and clean the welding bevel.

[0010] The preheating and cleaning component includes a first cavity fixedly mounted on the welding torch, and a second cavity elastically slidingly disposed at the lower opening of the first cavity. A plurality of guide tubes are arranged in a strip-like array at the bottom of the second cavity. Each of the guide tubes elastically slides through its bottom and passes through corresponding through holes in the second cavity. The air outlets of the guide tubes are bent, with the bending direction away from the welding head. The preheating and cleaning component also includes a clamping and fixing mechanism for positioning the guide tubes. This clamping and fixing mechanism is used to limit and fix the guide tubes when they contact the bevel position and to release the locking of the guide tubes after welding is completed.

[0011] As a further aspect of the present invention: a first elastic element is sleeved on the outer side of each guide tube, and the upper and lower ends of the first elastic element are respectively fixedly installed on the guide tube and the second cavity.

[0012] As a further embodiment of the present invention: a first elastic element is sleeved on the outer side of each guide tube, and the upper and lower ends of the first elastic element are respectively fixedly installed on the guide tube and the second cavity.

[0013] As a further embodiment of the present invention: the second cavity is elastically mounted on the first cavity by not less than two second elastic telescopic rods.

[0014] As a further aspect of the present invention, the elastic damping of the second elastic telescopic rod is greater than that of the first elastic element.

[0015] As a further aspect of the present invention, it also includes a hot air system, which includes a housing and a fan disposed at the inlet of the housing. A heating resistor is disposed inside the housing for heating the air input by the fan. The outlet of the housing is disposed at the hot air inlet of the first cavity.

[0016] As a further embodiment of the present invention: the clamping and fixing mechanism includes two clamping rods arranged opposite each other, the two clamping rods being perpendicular to the guide tubes; a plurality of clamping blocks are provided on the side of the clamping rods near the guide tubes, the clamping blocks being used to clamp the surface of the guide tubes to lock the position of the guide tubes; the two ends of the clamping rods are elastically telescopically mounted on the inner sidewall of the second cavity via first elastic telescopic rods; the clamping and fixing mechanism also includes two transmission mechanisms; the two transmission mechanisms are arranged between the two clamping rods, and the two transmission mechanisms are respectively distributed at both ends of the clamping rods; racks are provided on the outside of the guide tubes on both sides of the plurality of guide tubes; the racks are used to drive the two clamping rods closer together via the transmission mechanisms.

[0017] As a further embodiment of the present invention: the transmission mechanism includes a mounting shaft, a transmission gear, a first limiting mechanism, and a locking mechanism for locking the position of the mounting shaft; both ends of the mounting shaft are elastically rotatably mounted on the side wall of the second cavity; the transmission gear is fixedly sleeved on the mounting shaft, and the first limiting mechanism is used to adjust the distance between the two clamping rods by rotating the mounting shaft; the first limiting mechanism is disposed between the two clamping rods.

[0018] As a further embodiment of the present invention: the first limiting mechanism includes a mating ring disposed on the clamping rod and a first mounting ring fixedly sleeved on the outside of the mounting shaft. The first mounting ring is symmetrically provided with two first arc-shaped protrusions, and the mating ring is symmetrically provided with first arc-shaped peaks.

[0019] As a further embodiment of the present invention: a third elastic element is sleeved on the outer side of the mounting shaft, and the two ends of the third elastic element are respectively fixedly installed on the second cavity and the mounting shaft.

[0020] As a further embodiment of the present invention: the locking mechanism includes a mounting block disposed in a mounting groove on the outside of the second cavity and at least two mating locking grooves disposed at the end of the mounting shaft. At least two slide rods are fixedly mounted on the mounting block. The slide rods pass through the mounting block and the end of the slide rod away from the mounting block abuts against the end of the mounting shaft. The slide rods are elastically slidably disposed on the mounting block. The slide rods are used to insert into their mating locking grooves.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the welding torch moves along the bevel direction under the action of the moving mechanism, the preheating and cleaning component preheats and cleans in front, and the welding torch welds in the rear, thus reducing heat loss; at the same time, the height of several guide tubes and their corresponding preheating and cleaning positions are consistent, so the preheating temperature of each bevel surface position is consistent, ensuring welding quality, and the pressure of the hot air sprayed from each position is basically consistent, so that each position can be cleaned well, improving the cleaning effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the preheating and cleaning component in the natural state of a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the working state of the preheating and cleaning component in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0025] Figure 4This is a schematic diagram of the guide tube in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the clamping and fixing mechanism in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0028] Figure 7 This is a schematic diagram of the end structure of the rotating shaft installed in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the clamping rod in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of the structure of a mating ring in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of the structure of the first mounting ring in a semi-automatic welding equipment for coal feeder production according to an embodiment of the present invention.

[0032] In the diagram: 10-Support base, 20-Moving mechanism, 30-Welding torch, 40-Preheat cleaning component, 301-Welding head, 401-First cavity, 402-Hot air inlet, 403-Guide tube, 404-Second cavity, 405-First elastic telescopic rod, 406-Clamping rod, 407-Transmission mechanism, 408-Mounting component, 409-Rack, 410-Clamping block, 411-Mounting shaft, 412-Matching ring, 41 3-First mounting ring, 414-First arc-shaped protrusion, 415-Slide rod, 416-Second elastic element, 417-First mating drive element, 418-Second mating drive element, 419-First elastic telescopic rod, 420-Matching locking groove, 421-Third elastic element, 422-Matching clamping block, 423-Mounting groove, 424-Second elastic telescopic rod, 425-Transmission gear, 426-Mounting block, 427-First elastic element. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Please see Figures 1-4 Embodiment 1 of the present invention provides a semi-automatic welding equipment for coal feeder production. The semi-automatic welding equipment for coal feeder production includes: a support base 10 for support; a moving mechanism 20 disposed on the support base 10; a welding torch 30 installed at the output end of the moving mechanism 20, the moving mechanism 20 being used to drive the welding torch 30 to reciprocate and move up and down; a welding head 301 disposed on the welding torch 30; and a preheating and cleaning component 40 detachably installed on the welding torch 30, the preheating and cleaning component 40 being used to preheat and clean the welding bevel.

[0036] Specifically, the preheating and cleaning component 40 includes a first cavity 401 fixedly mounted on the welding torch 30, and a second cavity 404 elastically slidably disposed at the lower opening of the first cavity 401; a plurality of guide tubes 403 are arranged in a strip array at the bottom of the second cavity 404; the plurality of guide tubes 403 are elastically slidably disposed through the bottom of the guide tubes 403, and the plurality of guide tubes 403 respectively pass through a plurality of corresponding through holes on the second cavity 404; the air outlets of the plurality of guide tubes 403 are all bent, and the bending direction is away from the welding head 301; the preheating and cleaning component 40 also includes a clamping and fixing mechanism for positioning the plurality of guide tubes 403; the clamping and fixing mechanism is used to limit and fix the plurality of guide tubes 403 when they abut against the bevel position and to release the locking of the plurality of guide tubes 403 after welding is completed.

[0037] The second cavity 404 is elastically mounted on the first cavity 401, which facilitates the protection of several guide tubes 403.

[0038] To adjust the height of 301, the welding torch 30 may also include a height adjustment mechanism for fine-tuning. 301 is fixedly mounted on the output end of the height adjustment mechanism.

[0039] Specifically, during operation, the workpiece to be welded is placed on the support base 10. Then, the moving mechanism 20 drives the welding torch 30 to lower the preheating and cleaning component 40. The guide tube 403 then contacts the welding bevel position. Under the influence of the bevel structure, the adaptability of several guide tubes 403 changes. Then, the clamping and fixing mechanism clamps and fixes several guide tubes 403. Next, dry hot air is input into the first cavity 401. The hot air preheats and automatically cleans the bevel position through the guide tubes 403. At the same time, the welding torch 30 moves along the bevel direction under the action of the moving mechanism 20. The preheating and cleaning component 40 performs preheating and cleaning in front, and the welding torch 30 performs welding in the rear, thus reducing heat loss. At the same time, the height of several guide tubes 403 and their corresponding preheating and cleaning positions is consistent, so the preheating temperature of each bevel surface position is consistent, ensuring welding quality. Moreover, the pressure of the hot air sprayed from each position is basically consistent, so that each position can be cleaned well, improving the cleaning effect.

[0040] It should be noted that the moving mechanism 20 can be a lead screw mechanism, which is existing technology and will not be described in detail here.

[0041] like Figure 2 and 3 As shown, in a preferred embodiment of the present invention, in order to realize the guide tube 403 elastically sliding on the second cavity 404, first sliding keys can be symmetrically arranged on both sides of the guide tube 403. The first sliding keys are slidably arranged in the first sliding groove on the second cavity 404. The first sliding groove is a strip structure and is arranged along the length direction of the guide tube 403.

[0042] To allow several guide tubes 403 to be elastically positioned on the second cavity 404, a first elastic element 427 is sleeved on the outer side of each guide tube 403. The upper and lower ends of the first elastic element 427 are fixedly installed on the guide tube 403 and the second cavity 404, respectively, thus achieving an elastic setting. This facilitates the guide tubes 403 returning to their initial position. The first elastic element 427 can be a helical spring.

[0043] like Figure 2 and 3 As shown, in a preferred embodiment of the present invention, the second cavity 404 is elastically mounted on the first cavity 401 by at least two second elastic telescopic rods 424. The elastic damping of the second elastic telescopic rods 424 is greater than that of the first elastic element 427. Thus, when the guide tube 403 contacts the workpiece, the first elastic element 427 deforms first, clamping several guide tubes 403. If it continues to descend, the second elastic telescopic rods 424 will deform, protecting the guide tubes 403.

[0044] like Figure 2As shown, in a preferred embodiment of the present invention, in order to input hot air into the preheating and cleaning component 40, the present invention further includes a hot air system. The hot air system includes a housing and a fan disposed at the inlet of the housing. A heating resistor is disposed inside the housing to heat the air input by the fan. The outlet of the housing is disposed at the hot air inlet 402 of the first cavity 401. Thus, the hot air system inputs high-pressure hot air into the first cavity 401.

[0045] The shapes of the first cavity 401 and the second cavity 404 can be designed as square or round.

[0046] like Figure 4 , 5 As shown in Figures 7-10, in a preferred embodiment of the present invention, the clamping and fixing mechanism includes two clamping rods 406 arranged opposite to each other, which are perpendicular to the guide tube 403. Several clamping blocks 410 are provided on the side of the clamping rods 406 near the guide tube 403. The clamping blocks 410 are used to clamp the surface of the guide tube 403 to lock its position. Both ends of the clamping rods 406 are elastically telescopically mounted on the inner sidewall of the second cavity 404 via first elastic telescopic rods 419. The clamping and fixing mechanism also includes two transmission mechanisms 407. The two transmission mechanisms 407 are disposed between the two clamping rods 406 and are distributed at both ends of the clamping rods 406. Racks 409 are provided on the outside of both sides of the guide tubes 403. The racks 409 are used to drive the two clamping rods 406 closer together via the transmission mechanisms 407. Specifically, after the guide tube 403 contacts the workpiece, the preheating and cleaning component 40 continues to descend with the welding torch 30. At this time, the mounting groove 423 will come into contact with the transmission mechanism 407, thereby driving the transmission mechanism 407 to move the two clamping rods 406 to the clamping working position. Then, the clamping rods 406 clamp and fix all the guide tubes 403 to achieve simultaneous clamping of several guide tubes 403. The mounting groove 423 can be fixedly installed on the guide tube 403 with bolts.

[0047] Specifically, the transmission mechanism 407 includes a mounting shaft 411, a transmission gear 42, a first limiting mechanism, and a locking mechanism for locking the position of the mounting shaft 411. The two ends of the mounting shaft 411 are elastically rotatably mounted on the sidewalls of the second cavity 404. The transmission gear 425 is fixedly sleeved on the mounting shaft 411. The first limiting mechanism is used to adjust the distance between the two clamping rods 406 by rotating the mounting shaft 411. The first limiting mechanism is located between the two clamping rods 406. Specifically, initially, under elastic action, the two clamping rods 406 are far apart. Then, when the rack 409 contacts the transmission gear 425, it drives the mounting shaft 411 to rotate. The mounting shaft 411 changes the position of the first limiting mechanism, causing the two clamping rods 406 to move closer together, thus clamping the guide tube 403. The mounting shaft 411 passes through the two clamping rods 406.

[0048] A clamping block 422 is provided on the outer side of the guide tube 403. The outer side of the clamping block 422 has an anti-slip structure, and the outer surface of the clamping block 422 can be made of anti-slip rubber. The clamping block 410 is used to clamp onto the clamping block 422.

[0049] like Figure 4 , 5 As shown in Figures 8-10, in a preferred embodiment of the present invention, the first limiting mechanism specifically includes a mating ring 412 disposed on the clamping rod 406 and a first mounting ring 413 fixedly sleeved on the outside of the mounting shaft 411. The first mounting ring 413 has two symmetrically arranged first arc-shaped protrusions 414, and the mating ring 412 has symmetrically arranged first arc-shaped peaks. Specifically, in the initial state, the mounting shaft 411, under elastic action, causes the first arc-shaped protrusions 414 to abut against the first arc-shaped peaks of the mating ring 412, thus causing the two clamping rods 406 to move away from each other. When the mounting shaft 411 rotates under the drive of the transmission gear 425, the first arc-shaped protrusions 414 move away from the first arc-shaped peaks, thus causing the clamping rods 406 to move closer together under the action of the mating clamping block 422 to clamp the guide tube 403. At this time, the mounting shaft 411 is limited by a locking structure to prevent the guide tube 403 from detaching from the workpiece, and the mounting shaft 411 returns to its initial state under elastic action.

[0050] A third elastic element 421 is sleeved on the outer side of the mounting shaft 411. The two ends of the third elastic element 421 are fixedly installed on the second cavity 404 and the mounting shaft 411, respectively, so that the mounting shaft 411 can be elastically rotated and installed on the second cavity 404.

[0051] like Figure 3 and 4As shown, in a preferred embodiment of the present invention, the locking mechanism includes a mounting block 426 disposed in a mounting groove 423 outside the second cavity 404 and at least two mating locking grooves 420 disposed at the end of the mounting shaft 411. At least two slide rods 415 are fixedly mounted on the mounting block 426. The slide rods 415 pass through the mounting block 426, and the end of the slide rod 415 away from the mounting block 426 abuts against the end of the mounting shaft 411. The slide rods 415 are elastically slidably disposed on the mounting block 426. The slide rods 415 are used to insert into the mating locking grooves 420 they mate with.

[0052] like Figure 3 and 4 As shown, in a preferred embodiment of the present invention, in order to enable the guide tube 403 to automatically return to its initial state and release the locking state of the guide tube 403 after welding, the present invention also includes a recovery mechanism. The recovery mechanism includes mounting members 408 disposed on both sides of the second cavity 404. A second mating drive member 418 is fixedly mounted on the side of the mounting member 408 near the second cavity 404. A first mating drive member 417 is disposed on the side of the mounting block 426 near the mounting member 408. The first mating drive member 417 and the second mating drive member 418 are mutually attracted to each other. After welding is completed, the welding torch 30 returns to its initial position, and the second cavity 404 also returns to its initial position. At this time, the first mating drive member 417 passes through the second mating drive member 418. Under the action of the first mating drive member 417, the second mating drive member 418 causes the mounting block 426 to move outward, allowing the slide rod 415 to slide out of the mating lock groove 420. This releases the locking state of the mounting shaft 411, which then returns to its initial state under the action of the third elastic member 421. This causes the two clamping rods 406 to move away from each other, releasing the lock on the guide tube 403. This achieves automatic unlocking of the guide tube 403, facilitating the next welding of different bevel specifications. The first mating drive member 417 and the second mating drive member 418 can be mutually attractive magnets.

[0053] In a preferred embodiment of the present invention, a second elastic element 416 is sleeved on the outer side of the slide rod 415, and the two ends of the second elastic element 416 are respectively fixedly installed on the side wall of the slide rod 415 and the second cavity 404. The second elastic element 416 can be a helical spring.

[0054] like Figure 3 and 4As shown, in a preferred embodiment of the present invention, the opening end of the mounting groove 423 is provided with a limiting edge. The limiting edge facilitates the limiting of the mounting block 426, preventing it from protruding and affecting the passage of the second cavity 404. It should be noted that the mounting groove 423 is located outside the second cavity 404 at the position where it protrudes from the first cavity 401.

[0055] The working principle of this invention is:

[0056] During operation, the workpiece to be welded is placed on the support base 10. Then, the moving mechanism 20 drives the welding torch 30 to lower the preheating and cleaning component 40. The guide tube 403 then contacts the welding bevel. Under the influence of the bevel structure, the positions of several guide tubes 403 adapt. After the guide tube 403 contacts the workpiece, the preheating and cleaning component 40 continues to descend with the welding torch 30. At this time, the rack 409 contacts the transmission gear 425, which in turn drives the transmission gear 425 to rotate the mounting shaft 411. Initially, under the elastic action, the mounting shaft 411 causes the first arc-shaped protrusion 414 to contact the first arc-shaped peak of the mating ring 412, thus causing the two clamping rods 406 to move away from each other. When the mounting shaft 411 rotates under the drive of the transmission gear 425, the first arc-shaped protrusion 414 moves away from the first arc-shaped peak, thus causing the clamping rods 406 to move closer together under the action of the clamping block 422. The guide tube 403 is clamped, and at this time, 415 is inserted into the mating locking groove 420 at the end of the mounting shaft 411 to limit its movement and prevent the mounting shaft 411 from returning to its initial state under elastic action when the guide tube 403 is disengaged from the workpiece. Then, the clamping and fixing mechanism clamps and fixes several guide tubes 403. Next, dry hot air is input into the first cavity 401. The hot air preheats and automatically cleans the bevel position through the guide tubes 403. At the same time, the welding torch 30 moves along the bevel direction under the action of the moving mechanism 20. The preheating and cleaning component 40 preheats and cleans in front, and the welding torch 30 welds in the rear, thus reducing heat loss. At the same time, the height of several guide tubes 403 and their corresponding preheating and cleaning positions is consistent, so the preheating temperature of each bevel surface position is consistent, ensuring welding quality. Moreover, the pressure of the hot air sprayed from each position is basically consistent, so that each position can be cleaned well, improving the cleaning effect. After welding is completed, the welding torch 30 returns to its initial position. At this time, the second cavity 404 also returns to its initial position. The first mating drive 417 passes through the second mating drive 418. Under the action of the first mating drive 417, the second mating drive 418 causes the mounting block 426 to move outward, causing the slide rod 415 to slide out of the mating lock groove 420. This releases the locking state of the mounting shaft 411. Under the action of the third elastic element 421, the mounting shaft 411 returns to its initial state, causing the two clamping rods 406 to move away from each other. The two clamping rods 406 release the lock on the guide tube 403, realizing the automatic unlocking of the guide tube 403, which is convenient for the next welding of different specifications of bevels.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A semi-automatic welding equipment for coal feeder production, characterized in that, include: Support base, used for support; The moving mechanism is mounted on the support base; A welding torch is installed at the output end of the moving mechanism, which drives the welding torch to reciprocate and move up and down; a welding head is provided on the welding torch. A preheating and cleaning component is detachably mounted on the welding torch. The preheating and cleaning component is used to preheat and clean the welding bevel. The preheating and cleaning component includes a first cavity fixedly mounted on the welding torch, and a second cavity elastically slidingly disposed at the lower opening of the first cavity. A plurality of guide tubes are arranged in a strip-like array at the bottom of the second cavity. Each of the guide tubes elastically slides through its bottom and passes through corresponding through holes in the second cavity. The air outlets of the guide tubes are bent, with the bending direction away from the welding head. The preheating and cleaning component also includes a clamping and fixing mechanism for positioning the guide tubes. This clamping and fixing mechanism is used to limit and fix the guide tubes when they contact the bevel position and to release the locking of the guide tubes after welding is completed. The clamping and fixing mechanism includes two clamping rods arranged opposite each other, perpendicular to the guide tubes. Several clamping blocks are provided on the side of each clamping rod near the guide tube, used to clamp the surface of the guide tube to lock its position. Both ends of the clamping rods are elastically telescopically mounted on the inner sidewall of the second cavity via first elastic telescopic rods. The clamping and fixing mechanism also includes two transmission mechanisms, located between the two clamping rods and distributed at both ends of the clamping rods. Racks are provided on the exterior of both sides of the guide tubes; the racks are used to drive the two clamping rods closer together via the transmission mechanisms.

2. The semi-automatic welding equipment for coal feeder production according to claim 1, characterized in that, Each guide tube is fitted with a first elastic element on its outer side, and the upper and lower ends of the first elastic element are respectively fixedly installed on the guide tube and the second cavity.

3. The semi-automatic welding equipment for coal feeder production according to claim 2, characterized in that, The second cavity is elastically mounted on the first cavity by at least two second elastic telescopic rods.

4. The semi-automatic welding equipment for coal feeder production according to claim 3, characterized in that, The elastic damping of the second elastic telescopic rod should be greater than that of the first elastic element.

5. The semi-automatic welding equipment for coal feeder production according to claim 1, characterized in that, It also includes a hot air system, which includes a housing and a fan installed at the inlet of the housing. The housing is equipped with a heating resistor for heating the air input by the fan. The outlet of the housing is located at the hot air inlet of the first cavity.

6. The semi-automatic welding equipment for coal feeder production according to claim 1, characterized in that, The transmission mechanism includes a mounting shaft, a transmission gear, a first limiting mechanism, and a locking mechanism for locking the position of the mounting shaft; the two ends of the mounting shaft are elastically rotatably mounted on the side wall of the second cavity; the transmission gear is fixedly sleeved on the mounting shaft; the first limiting mechanism is used to adjust the distance between the two clamping rods by rotating the mounting shaft; the first limiting mechanism is located between the two clamping rods.

7. The semi-automatic welding equipment for coal feeder production according to claim 6, characterized in that, The first limiting mechanism includes a mating ring disposed on the clamping rod and a first mounting ring fixedly sleeved on the outside of the mounting shaft. The first mounting ring has two first arc-shaped protrusions symmetrically disposed on it, and the mating ring has first arc-shaped peaks symmetrically disposed on it.

8. The semi-automatic welding equipment for coal feeder production according to claim 7, characterized in that, A third elastic element is sleeved on the outer side of the mounting shaft, and the two ends of the third elastic element are respectively fixedly installed on the second cavity and the mounting shaft.

9. A semi-automatic welding equipment for coal feeder production according to claim 6, characterized in that, The locking mechanism includes a mounting block disposed in a mounting groove on the outside of the second cavity and at least two mating locking grooves disposed at the end of the mounting shaft. At least two slide rods are fixedly mounted on the mounting block. The slide rods pass through the mounting block and the end of the slide rod away from the mounting block abuts against the end of the mounting shaft. The slide rods are elastically slidably disposed on the mounting block. The slide rods are used to insert into their mating locking grooves.

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