Steel plate cutting device for shell ring

Abstract

The steel plate cutting device comprises a bottom plate, a supporting assembly is arranged at the top of the bottom plate, a clamping assembly is arranged at the top of the supporting assembly, a cutting assembly is arranged on the outer side of the supporting assembly, a grinding assembly is arranged at the bottom of the supporting assembly, and the supporting assembly comprises two workbenches. The lifting block and the grinding head are located below the two protection plates. The invention relates to the technical field of shell ring manufacturing. According to the steel plate cutting device for the shell ring, grinding heads on the two sides are moved to be in the same horizontal state with the cutting position of a steel plate through lifting of a lifting block, then the cutting position of the steel plate makes contact with the grinding heads by moving a workbench towards the inner side, and an internal motor is started to drive a rotating rod and a grinding barrel to rotate; and the cutting position of the steel plate is polished through the polishing head, so that the effect of polishing the cutting position while cutting is achieved, the cutting position is very convenient to polish, and then the cutting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder segment manufacturing, in particular to a steel plate cutting device for cylinder segments. Background Art

[0002] "Cylinder segment" is a commonly used term in industrial manufacturing, especially in the field of pressure vessel manufacturing. Cylinder segment usually refers to a cylindrical cylinder segment formed by rolling, welding and other processes. It is one of the main components of pressure vessels, pipelines and other equipment. During the manufacturing process, multiple cylinder segments can be connected by welding and other methods to form a complete cylinder structure.

[0003] The manufacturing of the cylinder section requires steel plates, which need to be cut by cutting equipment during the processing. Laser cutting is a common steel plate cutting method. Laser cutting uses a high-power density laser beam to irradiate the material to be cut, so that the material is quickly heated to the vaporization temperature and evaporates to form holes. As the beam moves on the material, the holes continuously form a very narrow slit to complete the cutting of the material. It has high cutting accuracy, fast speed and good incision quality.

[0004] Although the steel plate can be effectively cut during the laser cutting process, the cut edge melts due to the high temperature after laser cutting, resulting in low flatness of the cut surface. The steel plate needs to be removed and the cut surface of the steel plate needs to be polished with additional polishing equipment, which makes the operation very inconvenient and results in low cutting efficiency of the steel plate.

[0005] To this end, the present invention provides a steel plate cutting device for cylinder sections to solve the above problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a steel plate cutting device for cylinder sections, which solves the problem that the cutting edge melts due to high temperature after laser cutting, resulting in low flatness of the cutting surface. The steel plate needs to be removed and the cutting surface of the steel plate needs to be polished by additional polishing equipment, which makes the operation very inconvenient and leads to low cutting efficiency of the steel plate.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steel plate cutting device for a cylinder section, comprising a base plate, a supporting assembly is provided on the top of the base plate, a clamping assembly is provided on the top of the supporting assembly, a cutting assembly is provided on the outer side of the supporting assembly, and a grinding assembly is provided on the bottom of the supporting assembly. The supporting assembly comprises two work tables, and support legs are fixedly installed at the four corners of the bottom of the work table, and the support legs are slidably connected to the top of the base plate. The grinding assembly comprises a protective plate, and the protective plate is hinged on the opposite side of the two work tables. A bottom rod is fixedly installed on the bottom of the work table, and a fourth cylinder is hinged between the bottom rod and the corresponding protective plate, and the inner end surfaces of the two fourth cylinders are in contact with each other. The grinding assembly also includes a lifting block, and the left and right sides of the lifting block are rotatably connected with a rotating rod, and a grinding head is fixedly installed on the outer end surface of the rotating rod, and the lifting block and the grinding head are located below the two protective plates.

[0008] Preferably: the cutting assembly includes an extension plate, the extension plate is fixedly installed on the front and rear sides of the bottom plate, the top of the extension plate is fixedly installed with a bottom frame, the top of the bottom frame is fixedly installed with a side plate, a cross plate is fixedly installed between the two side plates, the bottom of the cross plate is fixedly installed with a first electric slide rail, the bottom of the first electric slide rail is slidably connected to a first track slider, and the bottom of the first track slider is fixedly installed with a laser cutting head.

[0009] Preferably: a steel plate is placed on the top of the workbench, the steel plate is located between the two workbenches, the first electric slide rail spans the front and rear sides of the steel plate, and the laser cutting head is located above the two protective plates.

[0010] Preferably: the clamping assembly includes a bracket, the bracket is fixedly installed between the front and rear sides of the workbench, a second cylinder is fixedly installed on the top of the bracket, the output end of the second cylinder movably passes through the inside of the bracket, a splint is fixedly installed on the output end of the second cylinder, the splint is located above the workbench and the steel plate, and the steel plate is located between the workbench and the splint.

[0011] Preferably: a third cylinder is fixedly installed on the top of the right workbench, a push plate is fixedly installed on the output end of the third cylinder, the push plate is slidably connected to the top of the workbench, and the push plate is attached to the right side of the steel plate.

[0012] Preferably: a bottom cross bar is fixedly installed between the front and rear workbenches, a first cylinder is fixedly installed on the top of the base plate, an output end of the first cylinder is fixedly installed on the outer end of the bottom cross bar, a bottom cross bar and a first cylinder are fixedly installed between the left and right support legs, and the bottom cross bar is slidably connected to the top of the base plate.

[0013] Preferably: a second electric slide rail is fixedly installed on the top of the base plate and the extension plate, a sliding plate is slidably connected to the top of the second electric slide rail, two third electric slide rails are fixedly installed on the top of the sliding plate, a second electric slider is slidably connected to the top of the third electric slide rail, and a connecting rod is hinged between the front and rear walls of the lifting block and the corresponding second electric slider.

[0014] Preferably, a motor is fixedly installed inside the lifting block, and output ends of two motors are fixedly connected to the rotating rods on both sides respectively. Beneficial Effects

[0015] The present invention provides a steel plate cutting device for a cylinder section. Compared with the prior art, it has the following beneficial effects: 1. The steel plate cutting device for the cylinder section moves the grinding heads on both sides to the same level as the cutting part of the steel plate by lifting the lifting block, and then moves the workbench inward to make the cutting part of the steel plate contact with the grinding head, and starts the internal motor to drive the rotating rod and the grinding cylinder to rotate, and grinds the cutting part of the steel plate through the grinding head, thereby achieving the effect of grinding the cutting part while cutting, which makes grinding the cutting part very convenient, thereby improving the cutting efficiency.

[0016] 2. The steel plate cutting device for the cylinder section moves the push plate to the right side of the steel plate and continues to move the steel plate, and moves the part of the steel plate to be cut to the bottom of the laser cutting head. After the movement is completed, the second cylinder is started, and the second cylinder can drive the clamping plate to move downward, and the clamping plate moves downward to the upper surface of the steel plate. The clamping force of the clamping plate pushed by the second cylinder can clamp the steel plate, and the clamping plates on the left and right sides are respectively located on the left and right sides of the steel plate cutting place, thereby ensuring the stability of both sides of the steel plate cutting place. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a three-dimensional diagram of the external structure of the present invention; Figure 2 It is a right-side overall structural stereogram of the present invention; Figure 3 It is a top structure stereogram of the present invention; Figure 4 It is a side structural stereogram of the present invention; Figure 5It is a front perspective view of a part of the structure of the present invention; Figure 6 It is a three-dimensional diagram of the bottom plate split structure of the present invention; Figure 7 It is a three-dimensional diagram of the inner bottom structure of the present invention; Figure 8 It is a three-dimensional diagram of the top structure of the bottom plate of the present invention; Fig. 9 This is a three-dimensional diagram of the overall structure of the grinding assembly of the present invention. Fig.10 It is a three-dimensional diagram of the bottom structure of the present invention.

[0019] In the figure: 1. bottom plate; 2. cutting assembly; 21. bottom frame; 22. side plate; 23. cross plate; 24. first electric slide rail; 25. first track slider; 26. laser cutting head; 27. extension plate; 3. support assembly; 31. workbench; 32. support leg; 33. bottom cross bar; 34. first cylinder; 4. clamping assembly; 41. bracket; 42. second cylinder; 43. clamping plate; 44. push plate; 45. third cylinder; 5. grinding assembly; 51. protective plate; 52. bottom rod; 53. fourth cylinder; 54. second electric slide rail; 55. sliding plate; 56. third electric slide rail; 57. second electric slider; 58. connecting rod; 59. lifting block; 510. grinding head; 511. rotating rod; 6. steel plate. DETAILED DESCRIPTION

[0020] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0021] The present application is further described in detail below through drawings and examples.

[0022] Reference Figures 1 to 10The embodiment of the present application provides a steel plate cutting device for a cylinder section, comprising a bottom plate 1, a support assembly 3 is arranged on the top of the bottom plate 1, a clamping assembly 4 is arranged on the top of the support assembly 3, a cutting assembly 2 is arranged on the outside of the support assembly 3, a grinding assembly 5 is arranged on the bottom of the support assembly 3, the support assembly 3 comprises two workbenches 31, support legs 32 are fixedly installed at the four corners of the bottom of the workbench 31, the support legs 32 are slidably connected to the top of the bottom plate 1, the grinding assembly 5 comprises a protective plate 51, the protective plate 51 is hinged on the opposite side of the two workbenches 31, a bottom rod 52 is fixedly installed on the bottom of the workbench 31, a fourth cylinder 53 is hinged between the bottom rod 52 and the corresponding protective plate 51, the inner end surfaces of the two fourth cylinders 53 fit each other, the grinding assembly 5 also includes a lifting block 59, the left and right sides of the lifting block 59 are rotatably connected with a rotating rod 511, the outer end surface of the rotating rod 511 is fixedly installed with a grinding head 510, the lifting block 59 and the grinding head 510 are located below the two protective plates 51.

[0023] The cutting assembly 2 includes an extension plate 27, which is fixedly mounted on the front and rear sides of the bottom plate 1, a bottom frame 21 is fixedly mounted on the top of the extension plate 27, a side plate 22 is fixedly mounted on the top of the bottom frame 21, a cross plate 23 is fixedly mounted between the two side plates 22, a first electric slide rail 24 is fixedly mounted on the bottom of the cross plate 23, a laser cutting head 26 is slidably connected to the bottom of the first electric slide rail 24, and a laser cutting head 26 is fixedly mounted on the bottom of the first track slider 25. A steel plate 6 is placed on the top of the workbench 31, the steel plate 6 is located between the two workbenches 31, the first electric slide rail 24 spans the front and rear sides of the steel plate 6, and the laser cutting head 26 is located above the two protective plates 51.

[0024] In this embodiment, when cutting the steel plate 6, the steel plate 6 is first placed between the two workbenches 31. At this time, the push plate 44 can be driven to move by starting the third cylinder 45. The push plate 44 is moved to the right side of the steel plate 6, and the steel plate 6 is continued to be moved, and the part of the steel plate 6 to be cut is moved to the bottom of the laser cutting head 26. After the movement is completed, the second cylinder 42 is started, and the second cylinder 42 can drive the clamping plate 43 to move downward. The clamping plate 43 moves downward to the upper surface of the steel plate 6. The clamping force of the clamping plate 43 pushed by the second cylinder 42 can clamp the steel plate 6, and the clamping plates 43 on the left and right sides are respectively located on the left and right sides of the cutting position of the steel plate 6, thereby ensuring that the two sides of the cutting position of the steel plate 6 are The stability of the side is improved. When cutting, by starting the laser cutting head 26, the laser cutting head 26 irradiates the steel plate 6 with a laser to achieve melting and cutting of the steel plate 6, and by starting the first electric slide rail 24 to drive the first track slider 25 to move forward and backward during cutting, the laser cutting head 26 is driven to move forward and backward along the steel plate 6. The steel plate 6 is cut by the forward and backward movement of the laser cutting head 26, and the laser that penetrates the steel plate 6 after cutting the steel plate 6 or irradiates the protective plate 51 below. The protective plate 51 is made of tungsten steel with strong high temperature resistance. This material can ensure that the laser irradiated on it during cutting cannot melt it, thereby ensuring that the laser after cutting will not continue to move downward, thereby ensuring the safety of the overall cutting.

[0025] Reference Figures 1 to 10 In one aspect of the present embodiment, the clamping assembly 4 includes a bracket 41, which is fixedly mounted between the front and rear sides of the workbench 31, a second cylinder 42 is fixedly mounted on the top of the bracket 41, the output end of the second cylinder 42 movably passes through the inside of the bracket 41, a clamping plate 43 is fixedly mounted on the output end of the second cylinder 42, the clamping plate 43 is located above the workbench 31 and the steel plate 6, and the steel plate 6 is located between the workbench 31 and the clamping plate 43. A third cylinder 45 is fixedly mounted on the top of the right workbench 31, a push plate 44 is fixedly mounted on the output end of the third cylinder 45, the push plate 44 is slidably connected to the top of the workbench 31, and the push plate 44 is attached to the right side of the steel plate 6.

[0026] A bottom cross bar 33 is fixedly installed between the front and rear workbenches 31, a first cylinder 34 is fixedly installed on the top of the base plate 1, an output end of the first cylinder 34 is fixedly installed on the outer end of the bottom cross bar 33, the bottom cross bar 33 and the first cylinder 34 are fixedly installed between the left and right support legs 32, and the bottom cross bar 33 is slidably connected to the top of the base plate 1.

[0027] A second electric slide rail 54 is fixedly installed on the top of the bottom plate 1 and the extension plate 27, a sliding plate 55 is slidably connected to the top of the second electric slide rail 54, two third electric slide rails 56 are fixedly installed on the top of the sliding plate 55, a second electric slider 57 is slidably connected to the top of the third electric slide rail 56, and a connecting rod 58 is hinged between the front and rear walls of the lifting block 59 and the corresponding second electric slider 57. A motor is fixedly installed inside the lifting block 59, and the output ends of the two motors are fixedly connected to the rotating rods 511 on both sides.

[0028] In this embodiment, after the steel plate 6 is cut, the bottom cross bar 33 is driven to move outward by starting the first cylinder 34. The movement of the bottom cross bar 33 outward can drive the supporting legs 32 to move outward synchronously. The movement of the supporting legs 32 outward can drive the upper workbench 31 to move outward. The workbench 31 on both sides moves to both sides respectively, so that the steel plate 6 cut above can be separated. After the steel plate 6 is separated, the fourth cylinder 53 is started. The fourth cylinder 53 contracts and the protective plate 51 can be pushed downward to expose the cutting plane of the steel plate 6 thereon. Then, the two third electric slide rails 56 are started to drive the two second electric sliders 57 thereon to move in the opposite direction synchronously. The second electric slider 57 moves in the opposite direction synchronously and cooperates with the connecting rod 58 above to realize the lifting and lowering of the lifting block 59. The lifting of the lifting block 59 moves the grinding heads 510 on both sides to the same horizontal state as the cutting part of the steel plate 6. Then, by moving the workbench 31 inward, the cutting part of the steel plate 6 is contacted with the grinding head 510, and the internal motor is started to drive the rotating rod 511 and the grinding cylinder 510 to rotate, and the cutting part of the steel plate 6 is polished by the grinding head 510, thereby achieving the effect of polishing the cutting part while cutting, which makes the polishing of the cutting part very convenient, thereby improving the cutting efficiency; and when polishing, by starting the second electric slide rail 54, the sliding plate 55 can be driven to move forward and backward, thereby driving the upper lifting block 59 and the grinding head 510 to move forward and backward. The grinding head 510 moves forward and backward to ensure that the grinding head 510 moves forward and backward along the cutting part of the steel plate 6, thereby ensuring the integrity of the grinding of the cutting part of the steel plate 6.

[0029] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] Working principle: When cutting the steel plate 6, first place the steel plate 6 between the two workbenches 31. At this time, the third cylinder 45 can be started to drive the push plate 44 to move. The push plate 44 is moved to the right side of the steel plate 6, and the steel plate 6 is continued to be moved. The part of the steel plate 6 to be cut is moved to the bottom of the laser cutting head 26. After the movement is completed, the second cylinder 42 is started. The second cylinder 42 can drive the clamping plate 43 to move downward, and the clamping plate 43 is moved downward to the upper surface of the steel plate 6. The clamping force of the clamping plate 43 pushed by the second cylinder 42 can clamp the steel plate 6, and the clamping plates 43 on the left and right sides are respectively located on the left and right sides of the cutting position of the steel plate 6, so that To ensure the stability of both sides of the steel plate 6 at the cutting position, during cutting, by starting the laser cutting head 26, the laser cutting head 26 irradiates the steel plate 6 with a laser to achieve melting and cutting of the steel plate 6, and during cutting, by starting the first electric slide rail 24 to drive the first track slider 25 to move forward and backward, thereby driving the laser cutting head 26 to move forward and backward along the steel plate 6, and the steel plate 6 is cut by the forward and backward movement of the laser cutting head 26, and after cutting the steel plate 6, the laser that penetrates the steel plate 6 or irradiates the protective plate 51 below, the protective plate 51 is made of tungsten steel with strong high temperature resistance, this material can ensure that the laser irradiated thereon during cutting cannot melt it, thereby ensuring that the laser after cutting will not After the steel plate 6 is cut, the bottom cross bar 33 is driven to move outward by starting the first cylinder 34. The movement of the bottom cross bar 33 outward can drive the support legs 32 to move outward synchronously. The movement of the support legs 32 outward can drive the upper workbench 31 to move outward. The workbench 31 on both sides moves to both sides respectively to separate the steel plate 6 cut above. After the steel plate 6 is separated, the fourth cylinder 53 is started. The fourth cylinder 53 contracts to push the protective plate 51 downward. After pushing, the cutting plane of the steel plate 6 on it can be exposed. Then, the two third electric slide rails 56 are started to drive The two second electric sliders 57 thereon move synchronously in the opposite direction. The second electric sliders 57 move synchronously in the opposite direction and cooperate with the connecting rod 58 above to realize the lifting and lowering of the lifting block 59. The lifting and lowering of the lifting block 59 moves the grinding heads 510 on both sides to the same horizontal state as the cutting part of the steel plate 6. Then, by moving the workbench 31 inward, the cutting part of the steel plate 6 is brought into contact with the grinding head 510, and the internal motor is started to drive the rotating rod 511 and the grinding cylinder 510 to rotate. The cutting part of the steel plate 6 is polished by the grinding head 510, thereby achieving the effect of polishing the cutting part while cutting, which makes it very convenient to polish the cutting part, thereby improving the cutting efficiency.During grinding, the second electric slide rail 54 can be activated to drive the sliding plate 55 to move forward and backward, thereby driving the upper lifting block 59 and the grinding head 510 to move forward and backward. The grinding head 510 can be moved forward and backward along the cutting part of the steel plate 6 to ensure the integrity of the grinding of the cutting part of the steel plate 6.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel plate cutting device for a cylinder section, comprising a bottom plate (1), characterized in that: A support assembly (3) is arranged on the top of the base plate (1), a clamping assembly (4) is arranged on the top of the support assembly (3), a cutting assembly (2) is arranged on the outside of the support assembly (3), a grinding assembly (5) is arranged on the bottom of the support assembly (3), the support assembly (3) comprises two workbenches (31), support legs (32) are fixedly mounted at the four corners of the bottom of the workbenches (31), the support legs (32) are slidably connected to the top of the base plate (1), the grinding assembly (5) comprises a protective plate (51), and the protective plate (51) is hinged between the two workbenches. On a side opposite to the table (31), a bottom rod (52) is fixedly mounted on the bottom of the workbench (31), a fourth cylinder (53) is hingedly connected between the bottom rod (52) and the corresponding protective plate (51), the inner end surfaces of the two fourth cylinders (53) are in contact with each other, the grinding assembly (5) further comprises a lifting block (59), the left and right sides of the lifting block (59) are rotatably connected to a rotating rod (511), a grinding head (510) is fixedly mounted on the outer end surface of the rotating rod (511), and the lifting block (59) and the grinding head (510) are located below the two protective plates (51).

2. The steel plate cutting device for cylinder section according to claim 1, characterized in that: The cutting assembly (2) comprises an extension plate (27), wherein the extension plate (27) is fixedly mounted on the front and rear sides of the bottom plate (1), a bottom frame (21) is fixedly mounted on the top of the extension plate (27), a side plate (22) is fixedly mounted on the top of the bottom frame (21), a cross plate (23) is fixedly mounted between the two side plates (22), a first electric slide rail (24) is fixedly mounted on the bottom of the cross plate (23), a first track slider (25) is slidably connected to the bottom of the first electric slide rail (24), and a laser cutting head (26) is fixedly mounted on the bottom of the first track slider (25).

3. A steel plate cutting device for cylinder section according to claim 2, characterized in that: A steel plate (6) is placed on the top of the workbench (31), the steel plate (6) is located between the two workbenches (31), the first electric slide rail (24) spans the front and rear sides of the steel plate (6), and the laser cutting head (26) is located above the two protective plates (51).

4. The steel plate cutting device for cylinder section according to claim 1, characterized in that: The clamping assembly (4) comprises a bracket (41), the bracket (41) being fixedly mounted between the front and rear sides of the workbench (31), a second cylinder (42) being fixedly mounted on the top of the bracket (41), an output end of the second cylinder (42) being movable through the interior of the bracket (41), a clamping plate (43) being fixedly mounted on the output end of the second cylinder (42), the clamping plate (43) being located above the workbench (31) and the steel plate (6), and the steel plate (6) being located between the workbench (31) and the clamping plate (43).

5. The steel plate cutting device for cylinder section according to claim 4, characterized in that: A third cylinder (45) is fixedly mounted on the top of the right workbench (31), and a push plate (44) is fixedly mounted on the output end of the third cylinder (45). The push plate (44) is slidably connected to the top of the workbench (31), and the push plate (44) is attached to the right side of the steel plate (6).

6. The steel plate cutting device for cylinder section according to claim 1, characterized in that: A bottom cross bar (33) is fixedly installed between the front and rear workbenches (31), a first cylinder (34) is fixedly installed on the top of the bottom plate (1), an output end of the first cylinder (34) is fixedly installed on the outer end of the bottom cross bar (33), and a bottom cross bar (33) and the first cylinder (34) are fixedly installed between the left and right support legs (32), and the bottom cross bar (33) is slidably connected to the top of the bottom plate (1).

7. The steel plate cutting device for cylinder section according to claim 1, characterized in that: A second electric slide rail (54) is fixedly mounted on the top of the bottom plate (1) and the extension plate (27); a sliding plate (55) is slidably connected to the top of the second electric slide rail (54); two third electric slide rails (56) are fixedly mounted on the top of the sliding plate (55); a second electric slider (57) is slidably connected to the top of the third electric slide rail (56); and a connecting rod (58) is hingedly connected between the front and rear walls of the lifting block (59) and the corresponding second electric slider (57).

8. The steel plate cutting device for cylinder section according to claim 7, characterized in that: A motor is fixedly installed inside the lifting block (59), and the output ends of the two motors are fixedly connected to the rotating rods (511) on both sides respectively.

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