A mine car welding fixture

Abstract

The application discloses a mine car welding fixing device and relates to the technical field of welding tooling. The mine car welding fixing device is adopted in the embodiment of the application, and the mine car welding fixing device comprises a head tooling assembly and a tail tooling assembly arranged oppositely. The distance between the head tooling assembly and the tail tooling assembly can be adjusted to adapt to clamping and fixing of mine car workpieces with different specifications. The mine car workpieces can be stably fixed, the positions of the mine car workpieces can be kept horizontal, the welding operation is facilitated, the completion degree of automatic welding of the mine car is improved, the welding of the mine car workpieces has higher consistency, and the welding efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of welding tooling technology, and in particular to a welding fixing device for mining cars. Background Technology

[0002] Traditional mine car bodies, due to their diverse shapes, numerous structural component specifications, and large dimensional variations, are difficult to weld in a single setup using automated tooling. Manual welding suffers from inconsistent weld quality and high labor intensity for operators. Therefore, developing automated welding machines with versatile tooling for mine car welding, achieving high completion rates, is a pressing technical challenge. Summary of the Invention

[0003] To address the issues of poor versatility and low automatic welding completion rate of welding tooling components for mining cars in existing technologies, this application proposes a welding fixing device for mining cars, which can ensure stable fixing of the mining car workpiece to be welded, keep the position of the mining car workpiece to be welded horizontal, and facilitate welding operations.

[0004] This application proposes a welding and fixing device for a mine car, comprising: a head tooling assembly and a tail tooling assembly, wherein the head tooling assembly and the tail tooling assembly are arranged opposite each other on a straight line, and the head tooling assembly and the tail tooling assembly are used to clamp and fix the mine car workpiece to be welded.

[0005] The head tooling assembly includes a head clamping assembly and at least two clamping seats. The head clamping assembly is horizontally arranged, and the clamping seats are movably disposed on the head clamping assembly. The clamping seats can slide along the extending direction of the head clamping assembly, and the clamping seats are used to clamp and fix the hinge hole of the mine car workpiece to be welded.

[0006] The tail tooling assembly includes a tail clamping assembly, at least two clamping seats, an L-shaped support seat, and a floating support assembly. The tail clamping assembly is horizontally arranged, and the clamping seats are movably mounted on the tail clamping assembly. The clamping seats can slide along the extending direction of the tail clamping assembly. The clamping seats are used to support the tail bottom surface and outer side surface of the mine car workpiece to be welded. The L-shaped support seat is vertically arranged and located on the side of the tail clamping assembly away from the head tooling assembly. The floating support assembly is mounted on the L-shaped support seat and is used to press the tail top surface of the mine car workpiece to be welded.

[0007] Furthermore, the head tooling assembly also includes an L-shaped base, which has a first horizontal base plate and a first vertical base plate. The head clamping assembly is fixed on the first horizontal base plate. The first vertical base plate has a square handle on the side facing the head clamping assembly, and a first connecting part on the side facing away from the head clamping assembly.

[0008] Furthermore, each of the clamping seats includes a mounting base and a positioning shaft. The mounting base is slidably disposed on the upper surface of the head clamping assembly. The mounting base is provided with a rotating hole. The positioning shaft is rotatably installed in the rotating hole. The two positioning shafts are arranged in a straight line. The outer sides of the two positioning shafts are engaged with the hinge holes on the inner surface of the head groove of the workpiece to be welded.

[0009] Furthermore, the head clamping assembly includes a first tooling base housing, a first screw, a first hydraulic motor, a first sliding threaded sleeve, a first guide rail, a first limiting block, and a first limit switch. The first tooling base housing is fixed on the L-shaped base. The first screw is disposed inside the first tooling base housing. One end of the first screw is connected to the first hydraulic motor, which is fixed to the first tooling base housing. The first sliding threaded sleeve is threaded onto the first screw. The mounting base is connected to the first sliding threaded sleeve. The first limiting block is disposed in the middle of the first screw, which is used to limit the travel of the first sliding threaded sleeve. A first guide rail is disposed on each side of the first screw. The mounting base is slidably disposed on the first guide rails on both sides. The first limit switch is disposed on the first guide rails for detecting the position of the mounting base.

[0010] Furthermore, each clamping seat includes a sliding plate and a clamping block. The sliding plate is slidably disposed on the upper surface of the tail clamping assembly. The bottom surface of the clamping block is connected to the sliding plate. The clamping block is L-shaped and has a limiting notch. A wear-resistant plate is provided on the inner side of the limiting notch. The two clamping blocks are arranged in a straight line, and the limiting notches on the inner sides of the two clamping blocks are engaged with the outer surface of the tail of the workpiece to be welded.

[0011] Furthermore, the tail clamping assembly includes a second tooling base housing, a second screw, a second hydraulic motor, a second sliding threaded sleeve, a second guide rail, a second limit block, and a second limit switch. The second tooling base housing is fixed on the L-shaped support base. The second screw is disposed inside the second tooling base housing. One end of the second screw is connected to the second hydraulic motor, which is fixed to the second tooling base housing. The second sliding threaded sleeve is threaded onto the second screw. The sliding plate is connected to the second sliding threaded sleeve. The second limit block is disposed in the middle of the second screw and is used to limit the stroke of the second sliding threaded sleeve. A second guide rail is disposed on each side of the second screw. The two sides of the sliding plate are slidably disposed on the second guide rail. The second limit switch is disposed on the second guide rail for detecting the position of the sliding plate.

[0012] Furthermore, the L-shaped support base includes a second horizontal base plate and a second vertical base plate. The tail clamping assembly is fixed on the second horizontal base plate. The floating support assembly is provided on the side of the second vertical base plate facing the tail clamping assembly. A second connecting portion is provided on the side of the second vertical base plate away from the tail clamping assembly.

[0013] Furthermore, the tail tooling assembly also includes a fixed support base, which includes a support mounting base and a load-bearing support plate. The support mounting base is mounted on the second horizontal base plate, and the load-bearing support plate is connected to the upper surface of the support mounting base.

[0014] Furthermore, the tail tooling assembly also includes at least two floating support members, which are respectively disposed on both sides of the fixed support base, and the floating support assembly is located above the floating support members; the floating support member includes a first hinge seat and a first hinge support plate, the first hinge seat is mounted on the second horizontal base plate, and the first hinge support plate is hinged to the first hinge seat; the floating support assembly also includes a second hinge seat and a second hinge support plate, the second hinge seat is mounted on the second vertical base plate, and the second hinge support plate is hinged to the second hinge seat.

[0015] Furthermore, the second vertical base plate is provided with a first driving sliding mechanism and a second driving sliding mechanism. The first driving sliding mechanism is located below the second driving sliding mechanism. The second horizontal base plate is connected to the first driving sliding mechanism, and the floating support assembly is connected to the first driving sliding mechanism. The first driving sliding mechanism includes a third screw, a manual rotating wheel, a third guide rail, and a first sliding mounting plate. The third screw is rotatably connected to the second vertical base plate. A third guide rail is provided on each side of the third screw. The manual rotating wheel is connected to the bottom end of the third screw. The first sliding mounting plate is threadedly connected to the third screw. The two sides of the first sliding mounting plate are slidably disposed on the third guide rail. The second horizontal base plate is connected to the first sliding mounting plate. The second driving sliding mechanism includes a fourth screw, a third hydraulic motor, a fourth guide rail, and a second sliding mounting plate. The fourth screw is rotatably connected to the second vertical base plate. A fourth guide rail is provided on each side of the fourth screw. The third hydraulic motor is connected to the top end of the fourth screw. The second sliding mounting plate is threadedly connected to the fourth screw. The two sides of the second sliding mounting plate are slidably disposed on the fourth guide rail. The floating support assembly is connected to the second sliding mounting plate.

[0016] The beneficial effects of the technical solution provided in this application are as follows: by adopting the mine car welding and fixing device proposed in this application, including the head tooling assembly and the tail tooling assembly arranged opposite to each other, the distance between the head tooling assembly and the tail tooling assembly can be adjusted to adapt to clamp and fix mine car workpieces of different specifications to be welded, which can ensure that the mine car workpieces to be welded can be stably fixed, keep the position of the mine car workpieces to be welded horizontal, facilitate welding operation, improve the completion of automatic welding of mine cars, make the welding of mine car workpieces to be welded have high consistency, and improve welding efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-view structural diagram of a mine car welding fixing device clamping a workpiece to be welded, provided in an embodiment of this application.

[0019] Figure 2 This is a second-view structural diagram of a mine car welding fixing device clamping a workpiece to be welded, provided in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the head tooling assembly provided in the embodiments of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the L-shaped base provided in the embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the head clamping assembly provided in the embodiments of this application;

[0023] Figure 6 This is a schematic cross-sectional view of the head clamping assembly provided in the embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the structure of the clamping seat provided in the embodiment of this application;

[0025] Figure 8 This is a schematic diagram of the tail tooling assembly provided in an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the structure of the L-shaped support provided in the embodiment of this application;

[0027] Figure 10 This is a partial structural schematic diagram of the tail tooling assembly provided in an embodiment of this application;

[0028] Figure 11 This is a schematic cross-sectional view of the tail clamping assembly provided in an embodiment of this application;

[0029] Figure 12 This is a schematic diagram of the structure of the L-shaped support provided in the embodiment of this application;

[0030] Figure 13 This is a schematic diagram of the clamping seat provided in the embodiments of this application;

[0031] Figure 14 This is a schematic diagram of the structure of the fixed support provided in the embodiment of this application;

[0032] Figure 15 This is a structural schematic diagram of the floating support provided in the embodiments of this application;

[0033] Figure 16 This is a schematic diagram of the structure of the floating support component provided in the embodiments of this application.

[0034] The labels in the attached diagram are:

[0035] Head tooling assembly 1, head clamping assembly 11, first tooling base housing 111, first screw 112, first hydraulic motor 113, first sliding threaded sleeve 114, first guide rail 115, first limit block 116, first limit switch 117, clamping seat 12, mounting seat 121, positioning shaft 122, rotating hole 123, L-shaped base 13, first horizontal base plate 131, first vertical base plate 132, square handle 133, first connecting part 134; Tail tooling assembly 2, tail clamping assembly 21, second tooling base housing 211, second screw 212, second hydraulic motor 213, second sliding threaded sleeve 214, second guide rail 215, second limit block 216, second limit switch 217, clamping seat 22, sliding... Plate 221, clamping block 222, limiting notch 223, wear-resistant plate 224, L-shaped support seat 23, second horizontal base plate 231, second vertical base plate 232, second connecting part 233, floating support assembly 24, second hinge seat 241, second hinge support plate 242, fixed support seat 25, support mounting seat 251, load-bearing support plate 252, floating support component 26, first hinge seat 261, first hinge support plate 262, mine car workpiece to be welded 3, first driving sliding mechanism 41, third screw 411, manual rotating wheel 412, third guide rail 413, first sliding mounting plate 414, second driving sliding mechanism 42, fourth screw 421, third hydraulic motor 422, fourth guide rail 423, second sliding mounting plate 424. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The numbers in the accompanying drawings are only used to distinguish individual functional parts or modules and do not indicate logical relationships between parts or modules. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the term encompasses the element or object listed following the term and its equivalents, without excluding other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. “Above,” “below,” “left,” “right,” etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] The various embodiments according to this disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that in the drawings, the same reference numerals are assigned to components having substantially the same or similar structure and function, and repeated descriptions of them will be omitted.

[0039] To address the issues of poor versatility of welding tooling components for mine cars and low automatic welding completion rates, this application provides the following technical solution:

[0040] In one embodiment, such as Figure 1 , Figure 2 As shown, this application proposes a welding and fixing device for a mine car, including: a head tooling assembly 1 and a tail tooling assembly 2. The head tooling assembly 1 and the tail tooling assembly 2 are arranged opposite each other on a straight line, and the head tooling assembly 1 and the tail tooling assembly 2 are used to clamp and fix the mine car workpiece 3 to be welded.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the head tooling assembly 1 includes a head clamping assembly 11 and at least two clamping seats 12. The head clamping assembly 11 is horizontally arranged, and the clamping seats 12 are movably disposed on the head clamping assembly 11. The clamping seats 12 can slide along the extending direction of the head clamping assembly 11. The clamping seats 12 are used to clamp and fix the hinge hole of the mine car workpiece 3 to be welded.

[0042] like Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the tail tooling assembly 2 includes a tail clamping assembly 21, at least two clamping seats 22, an L-shaped support seat 23, and a floating support assembly 24. The tail clamping assembly 21 is horizontally arranged, and the clamping seats 22 are movably disposed on the tail clamping assembly 21. The clamping seats 22 can slide along the extending direction of the tail clamping assembly 21. The clamping seats 22 are used to support the tail bottom surface and outer side surface of the mine car workpiece 3 to be welded. The L-shaped support seat 23 is vertically arranged and is located on the side of the tail clamping assembly 21 away from the head tooling assembly 1. The floating support assembly 24 is disposed on the L-shaped support seat 23 and is used to press the tail top surface of the mine car workpiece 3 to be welded.

[0043] The clamping seat 12 is used to clamp and fix the head of the mine car workpiece 3 to be welded, the clamping seat 22 is used to support the bottom and outer sides of the tail of the mine car workpiece 3 to be welded, and the floating support assembly 24 is used to press the top of the tail of the mine car workpiece 3 to be welded, thereby achieving stable fixation of the mine car workpiece 3 to be welded, keeping the position of the mine car workpiece 3 to be welded horizontal, and facilitating welding operations.

[0044] like Figure 3 , Figure 4 As shown, the head tooling assembly 1 also includes an L-shaped base 13. The L-shaped base 13 is provided with a first horizontal base plate 131 and a first vertical base plate 132. The head clamping assembly 11 is fixed on the first horizontal base plate 131. The first vertical base plate 132 is provided with a square handle 133 on the side facing the head clamping assembly 11. The first vertical base plate 132 is provided with a first connecting part 134 on the side away from the head clamping assembly 11.

[0045] like Figure 3 , Figure 7 As shown, each of the clamping seats 12 includes a mounting seat 121 and a positioning shaft 122. The mounting seat 121 is slidably disposed on the upper surface of the head clamping assembly 11. The mounting seat 121 is provided with a rotating hole 123. The positioning shaft 122 is rotatably installed in the rotating hole 123. The two positioning shafts 122 are arranged in a straight line. The outer sides of the two positioning shafts 122 are engaged with the hinge hole on the inner surface of the head groove of the workpiece 3 to be welded.

[0046] like Figure 5 , Figure 6As shown, the head clamping assembly 11 includes a first tooling base housing 111, a first screw 112, a first hydraulic motor 113, a first sliding threaded sleeve 114, a first guide rail 115, a first limit block 116, and a first limit switch 117. The first tooling base housing 111 is fixed on the L-shaped base 13. The first screw 112 is disposed inside the first tooling base housing 111. One end of the first screw 112 is connected to the first hydraulic motor 113. The first hydraulic motor 113 is fixed on the first tooling base housing 111. The first sliding threaded sleeve 114 is threaded onto the rod 112, and the mounting base 121 is connected to the first sliding threaded sleeve 114. The first limiting block 116 is provided in the middle of the first screw 112. The first limiting block 116 is used to limit the stroke of the first sliding threaded sleeve 114. A first guide rail 115 is provided on each side of the first screw 112. The two sides of the mounting base 121 are slidably mounted on the first guide rail 115. The first limit switch 117 is provided on the first guide rail 115 to detect the position of the mounting base 121.

[0047] The head clamping assembly 11 can drive the first screw 112 to rotate via the first hydraulic motor 113, adjusting the position of the first sliding threaded sleeve 114 on the first screw 112 to control the position of the mounting base 121. The mounting base 121 is equipped with positioning shafts 122, which can be automatically controlled by the first limit switch 117 to clamp the head of the mine car workpiece 3 to be welded, thus fitting the size of the head of the mine car workpiece 3. Furthermore, the two sides of the mounting base 121 are slidably mounted on the first guide rail 115, effectively ensuring the stability of the mounting base 121.

[0048] like Figure 8 , Figure 10 , Figure 13 As shown, each clamping seat 22 includes a sliding plate 221 and a clamping block 222. The sliding plate 221 is slidably disposed on the upper surface of the tail clamping assembly 21. The bottom surface of the clamping block 222 is connected to the sliding plate 221. The clamping block 222 is L-shaped and has a limiting notch 223. A wear-resistant plate 224 is provided on the inner side of the limiting notch 223. The two clamping blocks 222 are arranged in a straight line, and the limiting notches 223 on the inner sides of the two clamping blocks 222 engage with the outer surface of the tail of the mine car workpiece 3 to be welded. The wear-resistant plate 224 abuts against the surface of the mine car workpiece 3 to be welded, thereby preventing wear on the limiting notch 223 of the clamping block 222.

[0049] like Figure 8 , Figure 10 , Figure 11As shown, the tail clamping assembly 21 includes a second tooling base housing 211, a second screw 212, a second hydraulic motor 213, a second sliding threaded sleeve 214, a second guide rail 215, a second limit block 216, and a second limit switch 217. The second tooling base housing 211 is fixed on the L-shaped support 23. The second screw 212 is disposed inside the second tooling base housing 211. One end of the second screw 212 is connected to the second hydraulic motor 213. The second hydraulic motor 213 is fixed on the second tooling base housing 211. The second sliding threaded sleeve 214 is threaded onto the rod 212, and the sliding plate 221 is connected to the second sliding threaded sleeve 214. The second screw 212 is provided with a second limiting block 216 in the middle, which is used to limit the stroke of the second sliding threaded sleeve 214. A second guide rail 215 is provided on each side of the second screw 212. The two sides of the sliding plate 221 are slidably disposed on the second guide rail 215. The second limit switch 217 is disposed on the second guide rail 215 to detect the position of the sliding plate 221.

[0050] The head clamping assembly 11 can drive the second screw 212 to rotate via the second hydraulic motor 213, adjusting the position of the second sliding threaded sleeve 214 on the second screw 212 to control the position of the sliding plate 221. The sliding plate 221 is equipped with clamping blocks 222, which can be automatically controlled by the second limit switch 217 to clamp the tail of the mine car workpiece 3 to be welded, thus fitting the size of the tail of the mine car workpiece 3. Furthermore, the two sides of the sliding plate 221 are slidably mounted on the second guide rail 215, effectively ensuring the stability of the sliding plate 221.

[0051] like Figure 9 As shown, the L-shaped support base 23 includes a second horizontal base plate 231 and a second vertical base plate 232. The tail clamping assembly 21 is fixed on the second horizontal base plate 231. The floating support assembly 24 is provided on the side of the second vertical base plate 232 facing the tail clamping assembly 21. The second connecting part 233 is provided on the side of the second vertical base plate 232 away from the tail clamping assembly 21.

[0052] like Figure 14 As shown, the tail tooling assembly 2 also includes a fixed support base 25, which includes a support mounting base 251 and a load-bearing support plate 252. The support mounting base 251 is mounted on the second horizontal base plate 231, and the load-bearing support plate 252 is connected to the upper surface of the support mounting base 251.

[0053] like Figure 15 , Figure 16As shown, the tail tooling assembly 2 further includes at least two floating support members 26, which are respectively disposed on both sides of the fixed support base 25, and the floating support assembly 24 is located above the floating support members 26; as shown Figure 15 As shown, the floating support 26 includes a first hinge seat 261 and a first hinged support plate 262. The first hinge seat 261 is mounted on the second horizontal base plate 231, and the first hinged support plate 262 is hinged to the first hinge seat 261. Figure 16 As shown, the floating support assembly 24 includes a second hinge seat 241 and a second hinge support plate 242. The second hinge seat 241 is mounted on the second vertical base plate 232, and the second hinge support plate 242 is hinged to the second hinge seat 241.

[0054] The two floating support members 26 and the fixed support base 25 both support the bottom surface of the mine car workpiece 3 to be welded. The two floating support members 26 can keep the position of the mine car workpiece 3 to be welded horizontal and not shift left or right.

[0055] like Figure 12 As shown, the second vertical base plate 232 is provided with a first driving sliding mechanism 41 and a second driving sliding mechanism 42. The first driving sliding mechanism 41 is located below the second driving sliding mechanism 42. The second horizontal base plate 231 is connected to the first driving sliding mechanism 41, and the floating support assembly 24 is connected to the first driving sliding mechanism 41. The first driving sliding mechanism 41 includes a third screw 411, a manual rotating wheel 412, a third guide rail 413, and a first sliding mounting plate 414. The third screw 411 is rotatably connected to the second vertical base plate 232. A third guide rail 413 is provided on each side of the third screw 411. The manual rotating wheel 412 is connected to the bottom end of the third screw 411. The first sliding mounting plate 414 is threadedly connected to the third screw 411. The first sliding mounting plate 414 is slidably mounted on the third guide rail 413 on both sides, and the second horizontal base plate 231 is connected to the first sliding mounting plate 414; the second driving sliding mechanism 42 includes a fourth screw 421, a third hydraulic motor 422, a fourth guide rail 423, and a second sliding mounting plate 424. The fourth screw 421 is rotatably connected to the second vertical base plate 232, and a fourth guide rail 423 is respectively provided on both sides of the fourth screw 421. The third hydraulic motor 422 is connected to the top end of the fourth screw 421. The second sliding mounting plate 424 is threadedly connected to the fourth screw 421, and the second sliding mounting plate 424 is slidably mounted on the fourth guide rail 423 on both sides. The floating support assembly 24 is connected to the second sliding mounting plate 424.

[0056] The first driving sliding mechanism 41 adjusts the height of the first sliding mounting plate 414 by rotating the manual wheel 412, ensuring the mine car workpiece 3 to be welded remains horizontal. The second driving sliding mechanism 42 controls the height of the floating support assembly 24, and after the mine car workpiece 3 is placed, it can move down to press against the top tail of the workpiece 3.

[0057] The beneficial effects of the technical solution provided in this application are as follows: by adopting the mine car welding and fixing device proposed in this application, including the head tooling assembly and the tail tooling assembly arranged opposite to each other, the distance between the head tooling assembly and the tail tooling assembly can be adjusted to adapt to clamp and fix mine car workpieces of different specifications to be welded, which can ensure that the mine car workpieces to be welded can be stably fixed, keep the position of the mine car workpieces to be welded horizontal, facilitate welding operation, improve the completion of automatic welding of mine cars, make the welding of mine car workpieces to be welded have high consistency, and improve welding efficiency.

[0058] The working principle of the mine car welding fixing device provided in this application is as follows: According to the specifications of the mine car workpiece to be welded, the distance between the head tooling assembly and the tail tooling assembly is adjusted. By adjusting the tail frame in the tail tooling assembly up and down, the relative height between the tail tooling assembly and the head tooling assembly meets the operation requirements.

[0059] When installing the mine car workpiece to be welded, the overhead crane lifts the workpiece to a suitable height and moves it towards the mine car welding fixing device until it is close to the middle position in the horizontal direction of the device. Then, the crane descends. The front end of the workpiece has a hinge hole, which engages with the clamping seat on the head tooling assembly to achieve front-end positioning. The rear end of the workpiece is placed on the floating support assembly on the support assembly of the tail tooling assembly. Driven by a hydraulic motor, the tail clamping assembly clamps the workpiece from both sides via a lead screw and clamping seat. The slide assembly in the tail tooling assembly descends under the action of a hydraulic motor, and the floating support assembly on the slide assembly presses the tail end of the workpiece against the hydraulically driven slide. At this point, the mine car workpiece is positioned and clamped on the mine car welding fixing device, and automatic welding can be performed.

[0060] After the workpiece in the mining car is automatically welded, the various clamping devices are released, the floating support component of the tail tooling assembly rises to the highest position, and the overhead crane is operated to lift the workpiece out, thus completing the welding.

[0061] The mine car welding and fixing device proposed in this application has high repeatability and positioning accuracy of the tooling components on the welding device. The head tooling assembly and the tail tooling assembly are set on the linear guide rail base and the positioning position is adjusted by the hydraulic motor. It can be used for the installation and welding of mine car body components of various lengths. The head tooling assembly is aligned and tightened with the hinge hole of the mine car head by the left and right sides of the mounting seat. The tail clamping assembly of the tail tooling assembly is adjusted with respect to the head tooling assembly by the internal screw and hydraulic motor, and is clamped by the tail clamping assembly. It can install mine car bodies with different front and rear heights, ensure the consistency of weld formation quality in one go, improve the degree of automatic welding completion, and improve work efficiency.

[0062] All of the above-mentioned optional technical solutions can be combined in any way to form the optional embodiments of this application, and will not be described in detail here.

[0063] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A welding and fixing device for mining cars, characterized in that, include: The head tooling assembly and the tail tooling assembly are arranged opposite each other on a straight line, and are used to clamp and fix the workpiece of the mine car to be welded between the head tooling assembly and the tail tooling assembly. The head tooling assembly includes a head clamping assembly and at least two clamping seats. The head clamping assembly is horizontally arranged, and the clamping seats are movably disposed on the head clamping assembly. The clamping seats can slide along the extension direction of the head clamping assembly. The clamping seats are used to clamp and fix the hinge hole of the mine car workpiece to be welded. Each clamping seat includes a mounting base and a positioning shaft. The mounting base is slidably disposed on the upper surface of the head clamping assembly. The mounting base has a rotating hole. The positioning shaft is rotatably installed in the rotating hole. The two positioning shafts are arranged in a straight line, and the outer sides of the two positioning shafts are engaged with the hinge hole on the inner surface of the head groove of the mine car workpiece to be welded. The tail tooling assembly includes a tail clamping assembly, at least two clamping seats, an L-shaped support seat, a floating support assembly, a fixed support seat, and at least two floating support members. The tail clamping assembly is horizontally arranged, and the clamping seats are movably mounted on the tail clamping assembly. The clamping seats can slide along the extending direction of the tail clamping assembly, and the clamping seats are used to support the tail bottom surface and outer side surface of the mine car workpiece to be welded. The L-shaped support seat is vertically arranged and located on the side of the tail clamping assembly opposite to the head tooling assembly. The floating support assembly is mounted on the L-shaped support seat. The clamping components are used to press the top tail surface of the mine car workpiece to be welded; each clamping seat includes a sliding plate and a clamping block, the sliding plate is slidably disposed on the upper surface of the tail clamping assembly, the bottom surface of the clamping block is connected to the sliding plate, the clamping block is L-shaped, the clamping block has a limiting notch, the inner side of the limiting notch is provided with a wear-resistant plate, the two clamping blocks are disposed in a straight line, and the limiting notches on the inner sides of the two clamping blocks are engaged with the outer tail surface of the mine car workpiece to be welded; the at least two floating support components are respectively disposed on both sides of the fixed support seat, and the floating support assembly is located above the floating support components.

2. The mine car welding and fixing device according to claim 1, characterized in that, The head tooling assembly also includes an L-shaped base, which has a first horizontal base plate and a first vertical base plate. The head clamping assembly is fixed on the first horizontal base plate. The first vertical base plate has a square handle on the side facing the head clamping assembly, and a first connecting part on the side facing away from the head clamping assembly.

3. The mine car welding and fixing device according to claim 1, characterized in that, The head clamping assembly includes a first tooling base housing, a first screw, a first hydraulic motor, a first sliding threaded sleeve, a first guide rail, a first limiting block, and a first limit switch. The first tooling base housing is fixed on the L-shaped base. The first screw is disposed inside the first tooling base housing. One end of the first screw is connected to the first hydraulic motor, which is fixed to the first tooling base housing. The first sliding threaded sleeve is threaded onto the first screw. The mounting base is connected to the first sliding threaded sleeve. The first limiting block is disposed in the middle of the first screw, which limits the travel of the first sliding threaded sleeve. A first guide rail is disposed on each side of the first screw. The mounting base is slidably disposed on the first guide rails on both sides. The first limit switch is disposed on the first guide rails to detect the position of the mounting base.

4. The mine car welding and fixing device according to claim 1, characterized in that, The tail clamping assembly includes a second tooling base housing, a second screw, a second hydraulic motor, a second sliding threaded sleeve, a second guide rail, a second limit block, and a second limit switch. The second tooling base housing is fixed on the L-shaped support base. The second screw is disposed inside the second tooling base housing. One end of the second screw is connected to the second hydraulic motor, which is fixed to the second tooling base housing. The second sliding threaded sleeve is threaded onto the second screw. The sliding plate is connected to the second sliding threaded sleeve. The second limit block is disposed in the middle of the second screw to limit the stroke of the second sliding threaded sleeve. A second guide rail is disposed on each side of the second screw. The two sides of the sliding plate are slidably disposed on the second guide rail. The second limit switch is disposed on the second guide rail to detect the position of the sliding plate.

5. The mine car welding and fixing device according to claim 1, characterized in that, The L-shaped support base includes a second horizontal base plate and a second vertical base plate. The tail clamping assembly is fixed on the second horizontal base plate. The floating support assembly is provided on the side of the second vertical base plate facing the tail clamping assembly. A second connecting part is provided on the side of the second vertical base plate away from the tail clamping assembly.

6. The mine car welding and fixing device according to claim 5, characterized in that, The fixed support base includes a support mounting base and a load-bearing support plate. The support mounting base is mounted on the second horizontal base plate, and the load-bearing support plate is connected to the upper surface of the support mounting base.

7. The mine car welding and fixing device according to claim 6, characterized in that, The floating support includes a first hinge seat and a first hinge support plate. The first hinge seat is mounted on the second horizontal base plate, and the first hinge support plate is hinged to the first hinge seat. The floating support assembly includes a second hinge seat and a second hinge support plate. The second hinge seat is mounted on the second vertical base plate, and the second hinge support plate is hinged to the second hinge seat.

8. The mine car welding and fixing device according to claim 5, characterized in that, The second vertical base plate is provided with a first driving sliding mechanism and a second driving sliding mechanism. The first driving sliding mechanism is located below the second driving sliding mechanism. The second horizontal base plate is connected to the first driving sliding mechanism, and the floating support assembly is connected to the first driving sliding mechanism.

9. The mine car welding and fixing device according to claim 8, characterized in that, The first driving sliding mechanism includes a third screw, a manual rotating wheel, a third guide rail, and a first sliding mounting plate. The third screw is rotatably connected to the second vertical base plate. A third guide rail is provided on each side of the third screw. The manual rotating wheel is connected to the bottom end of the third screw. The first sliding mounting plate is threadedly connected to the third screw. The two sides of the first sliding mounting plate are slidably disposed on the third guide rail. The second horizontal base plate is connected to the first sliding mounting plate.

10. The mine car welding and fixing device according to claim 9, characterized in that, The second driving sliding mechanism includes a fourth screw, a third hydraulic motor, a fourth guide rail, and a second sliding mounting plate. The fourth screw is rotatably connected to the second vertical base plate. A fourth guide rail is provided on each side of the fourth screw. The third hydraulic motor is connected to the top of the fourth screw. The second sliding mounting plate is threadedly connected to the fourth screw. The two sides of the second sliding mounting plate are slidably disposed on the fourth guide rail. The floating support assembly is connected to the second sliding mounting plate.

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