Quick-change tool table for assembling reduction gearbox

Abstract

The utility model provides a quick-change tool table for assembling reduction gearboxes, which comprises a rack, a quick-change clamping jaw I and a quick-change clamping jaw II, the quick-change clamping jaw I and the quick-change clamping jaw II are arranged on a table plate at the top of the rack in parallel, the quick-change clamping jaw I is used for clamping components of a transmission shaft integrated part, and the quick-change clamping jaw II is used for clamping the components of the transmission shaft integrated part. The first functional tool, the second functional tool and the third functional tool are arranged at the functional end of the first connecting base, and a first quick-change clamping jaw is in positioning connection with a platen through the first connecting base; the second quick-change clamping jaw is used for clamping transmission shaft integrated parts in different process states and comprises a second connecting base, a fourth functional tool and a fifth functional tool, the fourth functional tool and the fifth functional tool are arranged at the functional end of the second connecting base, the second quick-change clamping jaw is in positioning connection with the platen through the second connecting base, and all the functional tools can achieve different functions. The feeding and discharging device can be compatible with feeding and discharging in the assembly process of the reduction gearbox transmission shaft integrated part, assembly automation is achieved, cost is reduced, and assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automated mechanical equipment technology, and in particular to a quick-change tool table for assembling a gearbox. Background Technology

[0002] In the assembly of transmission products such as gearboxes and reducers, multiple drive shaft assemblies are typically required. The assembly of these drive shaft assemblies generally involves the assembly of various shaft components, such as bearings, end caps, and bushings. This assembly process involves loading these shaft components and unloading semi-finished drive shaft assemblies at different stages of the process. If all loading and unloading were done manually, the labor intensity would be high, efficiency would be low, and costs would be high. In automated production processes, robots are generally used for loading and unloading, offering high safety and efficiency. Therefore, it is necessary to design a compatible quick-change tooling table for gearbox assembly that can meet the assembly requirements of drive shaft assemblies. Utility Model Content

[0003] The present invention aims to provide a quick-change tool table for assembling gearboxes, so as to overcome the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a quick-change tool table for assembling a gearbox, including a frame, quick-change gripper one, and quick-change gripper two. The top of the frame is provided with a table plate, and quick-change gripper one and quick-change gripper two are arranged side by side on the table plate. Quick-change gripper one is used to grip the components of the drive shaft assembly, including a connecting seat one and functional tools one, two, and three located at the functional end of the connecting seat one. Quick-change gripper one is positioned and connected to the table plate through the connecting seat one. Quick-change gripper two is used to grip the drive shaft assembly in different process states, including a connecting seat two and functional tools four and five located at the functional end of the connecting seat two. Quick-change gripper two is positioned and connected to the table plate through the connecting seat two. Each of the functional tools can perform different functions.

[0005] Furthermore, in the aforementioned quick-change tool table for assembling the gearbox, one end of the connecting seat is provided with a quick-change sub-plate that can be quickly connected to the quick-change main plate at the end of the robot, and the other end is a functional end corresponding to the functions of each item. The functional end of the connecting seat is provided with an L-shaped functional connecting seat, and the functional tool one, functional tool two, and functional tool three are respectively fixed on one side of the functional connecting seat.

[0006] Furthermore, in the aforementioned quick-change tool table for assembling a gearbox, the first functional tool includes a suction cup fixing seat, a suction cup mounting post, and a spring-buffered suction cup assembly. The suction cup fixing seat is fixed to one side of the functional end of the first connecting seat, and a suction cup mounting post is fixed to its side. One end of the spring-buffered suction cup assembly is inserted into the suction cup mounting post and is fixedly connected to the suction cup mounting post.

[0007] Furthermore, in the aforementioned quick-change tool table for assembling the gearbox, the second functional tool includes a gripper cylinder, a gripper connecting plate, and an inner expansion rod. The output end of the gripper cylinder has two opposing gripper connecting plates. Each gripper connecting plate has an inner expansion rod at its lower end. The inner expansion rod is made of elastic material and includes a clamping part and an inner expansion part. The clamping part is a flat plate located on the inner side of the two inner expansion rods that are close to each other. The inner expansion part is an arc-shaped boss protruding from the clamping part located on the outer side of the two inner expansion rods that are far apart from each other.

[0008] Furthermore, in the aforementioned quick-change tool table for assembling a gearbox, the third functional tool includes a second gripper cylinder, a second gripper connecting plate, and a V-shaped clamping block. The output end of the second gripper cylinder is provided with two oppositely arranged second gripper connecting plates, and the two second gripper connecting plates are provided with oppositely arranged V-shaped clamping blocks on their adjacent sides.

[0009] Furthermore, in the aforementioned quick-change tool table for assembling the gearbox, one end of the connecting seat two is provided with a quick-change sub-plate that can be quickly connected to the quick-change main plate at the end of the robot, and the other end is also a functional end corresponding to the functions of each item. The functional end of the connecting seat two is provided with a trapezoidal functional connecting plate, and the functional tool four and functional tool five are respectively arranged on the two inclined surfaces of the functional connecting plate.

[0010] Furthermore, in the aforementioned quick-change tool table for assembling the gearbox, the functional tool four includes a gripper cylinder three. The gripper cylinder three is fixed to the functional connecting plate by a cylinder mounting seat. Its output end is provided with a gripper one. The gripper one is also provided with a gripper two at an angle to the gripper one on the side near the gripper cylinder three. The gripper one and the gripper two are respectively used to grip the transmission shaft assembly in different process states.

[0011] Furthermore, in the aforementioned quick-change tool table for assembling a gearbox, the first gripper includes two opposing gripper arms: a first gripper arm and a second gripper arm. The end of the first gripper arm has a circular hole that fits onto the end of a shaft-like part. The end of the second gripper arm has an arc-shaped opening groove that mates with the shaft-like part. When the first gripper is in operation, the inner surfaces of the first and second gripper arms abut against the end face of the part on the shaft to limit the axial displacement of the part. The second gripper includes two opposing gripper arms: a third gripper arm and a fourth gripper arm. The third gripper arm is arranged on the same side as the fourth gripper arm, and its end is provided with a round hole that fits onto the end of the shaft part. The end of the fourth gripper arm is also provided with an arc-shaped opening groove that mates with the shaft part. When the second gripper is working, the inner surfaces of the third gripper arm and the fourth gripper arm abut against the end face of the part on the shaft, limiting the axial displacement of the part on the shaft. The limiting distance between the third gripper arm and the fourth gripper arm is different from the limiting distance between the first gripper arm and the second gripper arm, corresponding to the gripping of the transmission shaft assembly in different process states.

[0012] Furthermore, in the aforementioned quick-change tool table for assembling the gearbox, each of the first and second connecting seats is provided with an upper connecting plate at the end where they connect to the quick-change auxiliary plate. The bottom surface of the upper connecting plate has multiple positioning bosses, and the table has multiple support grooves. These support grooves are U-shaped openings. The first and second connecting seats are inserted into the support grooves, and the bottom surface of the upper connecting plate abuts against the bottom surface of the table. The outer side of the arc-shaped portion of the support groove has positioning holes corresponding to the positioning bosses, and the positioning bosses are inserted into the positioning holes. Preferably, the lower end of the positioning table is tapered and fixed to the bottom surface of the upper connecting plate with countersunk screws.

[0013] Furthermore, the quick-change tool table for assembling the gearbox mentioned above also includes vertical beams on both sides of the table, a horizontal beam connecting the lower ends of the two vertical beams, and a base plate connecting the bottom ends of the two vertical beams. The vertical beams and the horizontal beams are made of aluminum alloy profiles and are connected by connecting angle irons. Adjustable feet are also provided at the four corners of the base plate.

[0014] Compared with existing technologies, the advantages of this invention are: it can accommodate the loading and unloading of gearbox drive shaft assembly components, achieving automated assembly, reducing costs, and improving assembly efficiency. Furthermore, this invention has a simple structure, occupies little space in the workstation, has low manufacturing costs, and the quick-change grippers are simple, fast, and convenient to replace. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of the quick-change tool table for assembling the gearbox of this utility model;

[0017] Figure 2 This is a schematic diagram of the quick-change gripper of the quick-change tool table for assembling the gearbox of this utility model.

[0018] Figure 3 This is a schematic diagram of the quick-change gripper 2 of the quick-change tool table for assembling the gearbox of this utility model;

[0019] Figure 4 This is a schematic diagram of the frame of the quick-change tool table for assembling the gearbox of this utility model;

[0020] In the diagram: 1. Frame; 11. Platform; 111. Support groove; 112. Positioning hole; 12. Vertical beam; 13. Horizontal beam; 14. Base plate;

[0021] 2. Quick-change gripper one; 21. Connecting seat one; 211. Upper connecting plate; 212. Positioning boss; 22. Functional tool one; 221. Suction cup fixing seat; 222. Suction cup mounting post; 223. Spring buffer suction cup assembly; 23. Functional tool two; 231. Gripper cylinder one; 232. Gripper connecting plate one; 233. Inner expansion rod; 2331. Clamping part; 2332. Inner expansion part; 24. Functional tool three; 241. Gripper cylinder two; 242. Gripper connecting plate two; 243. V-shaped clamping block; 25. Functional connecting seat;

[0022] 3. Quick-change gripper two; 31. Connecting seat two; 32. Functional tool four; 321. Gripper cylinder three; 322. Gripper arm one; 323. Gripper arm two; 324. Gripper arm three; 325. Gripper arm four; 33. Functional tool five; 34. Functional connecting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figure 1-4 As shown, a quick-change tool table for assembling a gearbox includes a frame 1, quick-change grippers 1 2, and quick-change grippers 2 3. The frame 1 has a table plate 11 on top. The quick-change grippers 1 2 and 2 3 are arranged side by side on the table plate 11. The quick-change gripper 1 2 is used to grip the components of the drive shaft assembly (drive shaft, bearing, bushing, end cover, seal, etc.). It includes a connecting seat 1 21 and functional tools 1 22, 23, and 3 24 located at the functional end of the connecting seat 1 21. The quick-change gripper 1 2 is positioned and connected to the table plate 11 through the connecting seat 1 22. One end of the connecting seat 1 21 is provided with a quick-change sub-plate that can be quickly connected to the quick-change main plate of the robot end, and the other end is a functional end corresponding to the functions of each item. The functional end of the connecting seat 1 21 is provided with an L-shaped functional connecting seat 25. The functional tools 1 22, 23, and 3 24 are respectively fixed on one side of the functional connecting seat 25, staggered from each other, and do not affect each other.

[0026] like Figure 2As shown, the quick-change gripper 3 is used to grip the transmission shaft assembly in different process states. It includes a connecting seat 31 and functional tools 4 32 and 5 33 located on the functional end of the connecting seat 31. The quick-change gripper 3 is positioned and connected to the platform 11 through the connecting seat 31. One end of the connecting seat 31 is provided with a quick-change sub-disk that can be quickly connected to the quick-change main disk at the end of the robot. The other end is also a functional end corresponding to the functions of each project. The functional end of the connecting seat 31 is provided with a trapezoidal functional connecting plate 34. The functional tools 4 32 and 5 33 are respectively located on the two inclined surfaces of the functional connecting plate 34.

[0027] Each of the aforementioned functional tools can perform different functions, thereby enabling compatibility with loading and unloading during the assembly process of gearbox drive shaft integration components, achieving assembly automation, reducing costs, and improving assembly efficiency.

[0028] Among them, such as Figure 2 As shown, the functional tool 22 is a suction cup material handling tool, including a suction cup fixing base 221, a suction cup mounting post 222, and a spring buffer suction cup assembly 223. The suction cup fixing base 221 is fixed to one side of the functional end of the connecting base 21, and the suction cup mounting post 222 is fixed to its side. One end of the spring buffer suction cup assembly 223 is inserted into the suction cup mounting post 222 and is fixedly connected to the suction cup mounting post 222.

[0029] like Figure 2 As shown, the second functional tool 23 includes a gripper cylinder 231, a gripper connecting plate 232, and an inner expansion rod 233. The output end of the gripper cylinder 231 is provided with two opposing gripper connecting plates 232. Each gripper connecting plate 232 has an inner expansion rod 233 at its lower end. The inner expansion rod 233 is made of an elastic material, specifically nylon. The inner expansion rod 233 includes a clamping part 2331 and an inner expansion part 2332. The clamping part 2331 is a flat plate located on the inner side of the two inner expansion rods 233 that are close to each other. The inner expansion part 2332 is an arc-shaped boss protruding from the clamping part 2331 and located on the outer side of the two inner expansion rods 233 that are far apart. It can clamp and pick up materials from the outside or tighten and pick up materials from the inside hole.

[0030] like Figure 2 As shown, the functional tool 24 includes a gripper cylinder 241, a gripper connecting plate 242, and a V-shaped clamping block 243. The output end of the gripper cylinder 241 is provided with two gripper connecting plates 242 arranged opposite to each other, and the two gripper connecting plates 242 are provided with V-shaped clamping blocks 243 arranged opposite to each other on the side that is close to each other.

[0031] Example 2

[0032] Based on the structure of Example 1, such as Figure 3As shown, the functional tool 32 includes a gripper cylinder 321. The gripper cylinder 321 is fixed on the functional connecting plate 34 by a cylinder mounting seat. Its output end is provided with a gripper 1. The gripper 1 is also provided with a gripper 2 at an angle to the gripper 1 on the side near the gripper cylinder 3. The gripper 1 and the gripper 2 are used to grip the transmission shaft assembly in different process states.

[0033] like Figure 3 As shown, the first gripper includes a first gripper arm 322 and a second gripper arm 323 arranged opposite to each other. The end of the first gripper arm 322 is provided with a circular hole that fits onto the end of the shaft-like part. The end of the second gripper arm 323 is provided with an arc-shaped opening groove that mates with the shaft-like part. When the first gripper is working, the inner surfaces of the first gripper arm 322 and the second gripper arm 323 abut against the end face of the part on the shaft to limit the axial displacement of the part on the shaft. The second gripper includes a third gripper arm 324 and a fourth gripper arm 325 arranged opposite to each other. The third gripper arm 324 and the fourth gripper arm 325... The first claw arm 322 is located on the same side, and its end is also provided with a round hole that fits onto the end of the shaft part. The end of the fourth claw arm 325 is also provided with an arc-shaped opening groove that mates with the shaft part. When the second claw is working, the inner surfaces of the third claw arm 324 and the fourth claw arm 325 abut against the end face of the part on the shaft, limiting the axial displacement of the part on the shaft. The limiting distance between the third claw arm 324 and the fourth claw arm 325 is different from the limiting distance between the first claw arm 322 and the second claw arm 323, corresponding to the clamping of the transmission shaft assembly in different process states.

[0034] In this embodiment, functional tool 4 32 is used to grip the drive shaft assembly of drive shaft one. Grippers one and two are used to grip the drive shaft assembly of drive shaft one in two different process states. The ends of gripper arm one 322 and gripper arm three 324 are on the same plane and abut against the bearing end face on one side of the drive shaft. This bearing end face is a common reference for easy positioning. The end of gripper arm four 325 protrudes from the end of gripper arm two 323. The end of gripper arm two 323 abuts against the bearing end face on the other side of the drive shaft, while the end of gripper arm four 325 abuts against the end face of the end cap on the other side of the drive shaft. It should be noted that the distribution positions of gripper arm one 322, gripper arm two 323, gripper arm three 324, and gripper arm four 325 are not limited to this and can be adjusted according to the actual position of the parts on the shaft. Functional tool five 134 is used to grip the drive shaft assembly of drive shaft two. Its structure is similar to that of functional tool four 32 and will not be described in detail here. In addition, it should be noted that the number of functional workpieces on the quick-change gripper is not limited to two, and can be adjusted according to the composition of the gearbox.

[0035] like Figure 2 , 3As shown, each of the connecting seats 21 and 31 has an upper connecting plate 211 at one end connected to the quick-change sub-plate. The bottom surface of the upper connecting plate 211 has multiple positioning bosses 212. The platform 11 has multiple support grooves 111, each a U-shaped opening. The connecting seats 21 and 31 are inserted into the support grooves 111, with the bottom surface of the upper connecting plate 211 abutting against the bottom surface of the platform 11 to support the quick-change gripper. The outer side of the arc-shaped portion of the support groove 111 has positioning holes 112 corresponding to the positioning bosses 212, which are inserted into the positioning holes 112. Specifically, the lower end of the positioning boss 212 is tapered and fixed to the bottom surface of the upper connecting plate 211 by countersunk screws. When changing the quick-change gripper, simply insert the connecting rod of the connecting seat into the support groove 111, then move it down so that the positioning boss 212 is inserted into the positioning hole 112. Then, the robot controls the quick-change main plate and quick-change secondary plate to quickly disengage, thus achieving the disassembly of the quick-change gripper. In summary, the quick-change gripper of this utility model is simple, quick, and convenient to replace, does not require multiple positioning components, reduces manufacturing costs, simplifies robot simulation verification, and improves replacement efficiency.

[0036] In addition, such as Figure 1 , 4 As shown, a detection sensor is also provided in the opposite direction of the opening of the support groove 111 to detect whether the quick-change gripper is in place. Through the detection sensor and robot control, the quick-change gripper to be replaced is accurately matched, thereby improving the replacement efficiency.

[0037] like Figure 1 , 4 As shown, the platform 1 also includes vertical beams 12 on both sides of the platform 11, a horizontal beam 13 connecting the lower ends of the two vertical beams 12, and a base plate 14 connecting the bottom ends of the two vertical beams 12. The vertical beams 12 and the horizontal beams 13 are both made of aluminum alloy profiles and are connected by connecting angle irons. The base plate 14 is also equipped with adjustable feet at its four corners for height adjustment. The platform 1 of this utility model is an assembly, mainly made of aluminum alloy profiles, with a simple structure, small footprint, low manufacturing cost, and good versatility.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick change tool station for gearbox assembly, characterised in that: The utility model provides a kind of transmission shaft integrated component's quick-change fixture, including rack, quick-change jaw one, quick-change jaw two, the top of the rack is equipped with table board, quick-change jaw one, quick-change jaw two are arranged in table board, quick-change jaw one is used to take the component part of transmission shaft integrated component, including connecting seat one and the functional tool one, functional tool two, functional tool three of being equipped in the functional end of connecting seat one, quick-change jaw one is positioned and connected with table board by connecting seat one;Quick-change jaw two is used to take transmission shaft integrated component of different process state, including connecting seat two and the functional tool four, functional tool five of being equipped in the functional end of connecting seat two, quick-change jaw two is positioned and connected with table board by connecting seat two, each functional tool can realize different function.

2. The quick change tool table for reduction gearbox assembly of claim 1, wherein: One end of the connecting seat one is provided with a quick-change sub-plate which is quickly connected with a quick-change main-plate of the end of a robot, and the other end is a functional end corresponding to each item function, the functional end of the connecting seat one is provided with an L-shaped functional connecting seat, the functional tool one, the functional tool two and the functional tool three are respectively fixed on one side of the functional connecting seat.

3. A quick change tool post for gearbox assembly according to claim 1 or 2, characterised in that: The functional tool one includes a suction cup fixing seat, a suction cup mounting column and a spring buffer suction cup assembly, the suction cup fixing seat is fixed on one side of the functional end of the connecting seat one, a suction cup mounting column is fixed on the side of the suction cup fixing seat, and one end of the spring buffer suction cup assembly is inserted into the suction cup mounting column and fixedly connected with the suction cup mounting column.

4. The quick change tool station for gearbox assembly of claim 1 or 2, wherein: The functional tool two includes a jaw cylinder one, a jaw connecting plate one and an inner expanding rod, the output end of the jaw cylinder one is provided with two oppositely arranged jaw connecting plate ones, the lower end of each jaw connecting plate one is provided with an inner expanding rod, the inner expanding rod is made of elastic material, and the inner expanding rod includes a clamping portion and an inner expanding portion, the clamping portion is a flat plate arranged on the inner side of the two inner expanding rods close to each other, and the inner expanding portion is an arc-shaped boss protruding from the clamping portion and arranged on the outer side of the two inner expanding rods away from each other.

5. The quick change tool table for gearbox assembly of claim 1 or 2, wherein: The functional tool three includes a jaw cylinder two, a jaw connecting plate two and a V-shaped clamping block, the output end of the jaw cylinder two is provided with two oppositely arranged jaw connecting plate twos, and the side close to each other of the two jaw connecting plate twos is provided with oppositely arranged V-shaped clamping blocks.

6. The quick change tool table for reduction gearbox assembly of claim 1, wherein: One end of the connecting seat two is provided with a quick-change sub-plate which is quickly connected with a quick-change main-plate of the end of a robot, and the other end is also a functional end corresponding to each item function, the functional end of the connecting seat two is provided with a trapezoidal functional connecting plate, and the functional tool four and the functional tool five are oppositely arranged on two inclined surfaces of the functional connecting plate.

7. The quick change tool table for gearbox assembly of claim 1 or 6, wherein: The functional tool four includes a jaw cylinder three, the jaw cylinder three is fixed on the functional connecting plate through a cylinder mounting seat, the output end of the jaw cylinder three is provided with a jaw one, and the side close to the jaw cylinder three of the jaw one is further provided with a jaw two arranged at an angle with the jaw one, and the jaw one and the jaw two are respectively used to clamp transmission shaft integrated components in different process states.

8. The quick change tool table for gearbox assembly of claim 7, wherein: The first jaw comprises oppositely arranged jaw arm one and jaw arm two, the end of the jaw arm one is provided with a round hole sleeved on the end of the shaft part, the end of the jaw arm two is provided with an arc-shaped open slot matched with the shaft part, and the inner side surfaces of the jaw arm one and the jaw arm two abut against the end surface of the shaft part when the first jaw works, for limiting the axial displacement of the shaft part; the second jaw comprises oppositely arranged jaw arm three and jaw arm four, the jaw arm three is arranged on the same side with the jaw arm one, and the end thereof is provided with a round hole sleeved on the end of the shaft part, the end of the jaw arm four is also provided with an arc-shaped open slot matched with the shaft part, the inner side surfaces of the jaw arm three and the jaw arm four abut against the end surface of the shaft part when the second jaw works, for limiting the axial displacement of the shaft part, and the limiting spacing between the jaw arm three and the jaw arm four is different from the limiting spacing between the jaw arm one and the jaw arm two, corresponding to the clamping of the transmission shaft integrated piece in different process states.

9. The quick change tool table for reduction gearbox assembly of claim 1, wherein: The upper connecting plate bottom surface of the connecting seat one and the connecting seat two is provided with a plurality of positioning bosses, the table plate is provided with a plurality of supporting grooves, the supporting grooves are U-shaped open grooves, the connecting seat one and the connecting seat two are inserted in the supporting grooves, and the bottom surface of the upper connecting plate abuts against the table plate bottom surface, the outer side of the arc-shaped part of the supporting groove is provided with a positioning hole corresponding to the positioning boss, and the positioning boss and the positioning hole are inserted.

10. The quick change tool table for reduction gearbox assembly of claim 1, wherein: The rack further comprises vertical beams arranged on both sides of the table plate, a cross beam connecting the lower ends of the two vertical beams, and a bottom plate connecting the bottom ends of the two vertical beams, the vertical beams and the cross beam are made of aluminum alloy profiles and are connected by connecting angle irons, and the bottom plate four corners are further provided with adjusting foot pads.

Images