Hoisting equipment for assembling flame cutting machine

Abstract

The utility model relates to hoisting equipment for assembling a flame cutting machine, which comprises a supporting seat, a lifting device and a lifting device, the bottom of the supporting seat is provided with an advancing track, and the advancing track is used for driving the supporting seat to move along a straight line; a rocker arm is arranged at the top end of the supporting seat, a lifting part is arranged at the other end of the rocker arm, a clamping unit is connected to the bottom of the lifting part, and the lifting part is used for driving the clamping unit to ascend and descend. The clamping unit comprises a frame body, two sets of driving parts are oppositely arranged at the bottom of the frame body, clamping jaws are arranged on the driving parts, and the two sets of driving parts drive the multiple clamping jaws on the two sides to be close to or away from each other; the clamping jaw comprises a rotating piece and a supporting block which are connected with each other, the two ends of a workpiece can be clamped through the frame body, the driving piece, the rotating piece and the supporting block, meanwhile, the bottom of the workpiece is supported, and therefore the workpiece can be firmly clamped and prevented from sliding off, and the conveying stability of the large workpiece is improved.

Description

Technical Field

[0001] This application relates to the field of cutting machine processing technology, and in particular to a hoisting device for assembling a flame cutting machine. Background Technology

[0002] In the production process of a flame cutting machine, after the parts are processed, they need to be transported to the assembly area for assembly. This process usually relies on hoisting equipment, which is especially important for large steel parts.

[0003] However, existing lifting equipment often employs simple hooks or clamping devices. While these may be sufficient for lifting small parts, their stability is often inadequate when handling large steel components. Hook designs may fail to provide adequate support area, causing the steel component to sway or even detach during lifting, increasing operational risks and safety hazards. Clamping devices, while providing some clamping force, often lack necessary adjustment mechanisms, making them unsuitable for steel components of different sizes and shapes.

[0004] To address the aforementioned issues, a hoisting device for assembling flame cutting machines is now designed. Utility Model Content

[0005] This application provides a hoisting device for assembling a flame cutting machine, which solves the problem that existing hoisting devices in the related art often lack stability when dealing with large steel parts.

[0006] In a first aspect, a hoisting device for assembling a flame cutting machine is provided, comprising:

[0007] A support base has a travel track at its bottom, which is used to drive the support base to move in a straight line;

[0008] The support base is provided with a rocker arm at the top and a lifting component at the other end. A clamping unit is connected to the bottom of the lifting component, and the lifting component is used to drive the clamping unit to move up and down.

[0009] The clamping unit includes a frame, and two sets of driving members are arranged opposite each other at the bottom of the frame. Each driving member is equipped with a gripper, and the two sets of driving members drive multiple grippers on both sides to move closer or further apart.

[0010] The gripper includes a rotating component and a support block connected to each other. The rotating component drives the support block to rotate, and the support block supports the workpiece.

[0011] In some embodiments, the traveling track includes: a base, two sliding rails oppositely arranged on the base, and a plurality of sliders slidably arranged on the sliding rails, wherein the top ends of the sliders are connected to the support base;

[0012] A rack arranged on the base, two driving motors oppositely arranged on the support base, the output shafts of the driving motors penetrate through the support base and extend to the base, gears are arranged on the output shafts of the driving motors, and the gears are meshed with the rack.

[0013] In some embodiments, the support base includes a support disk and a column connected to each other. Two guiding blocks are oppositely arranged on one side of the support disk, a guiding sliding rail is arranged on the base, and the guiding blocks are in sliding fit with the guiding sliding rail.

[0014] In some embodiments, the swing arm is rotatably arranged on a rotating shaft on the column, a support arm is arranged on the rotating shaft, a driving motor two is arranged on the column, and the output shaft of the driving motor two is connected to one end of the rotating shaft and is used for driving the rotating shaft to rotate.

[0015] In some embodiments, the lifting member includes a housing arranged at one end of the support arm, a driving motor three is arranged at one end of the housing, a winding disk is rotatably arranged inside the housing, a cable is wound around the winding disk, and the output shaft of the driving motor three is connected to the winding disk;

[0016] A wire arranging port is arranged at the bottom of the housing, and one end of the cable penetrates through the wire arranging port and extends to the outside.

[0017] In some embodiments, the frame body includes a metal support beam and a plurality of connecting rods arranged above the metal support beam. A fixed cylinder is arranged between the plurality of connecting rods, and the cable extends outward to one end and is connected to the fixed cylinder.

[0018] In some embodiments, the driving member includes a fixed beam arranged at the bottom of the metal support beam, the fixed beam is in the shape of a "king", three through holes are formed inside the fixed beam, two electric push rods are oppositely arranged inside the through holes, and the piston rods of the electric push rods are connected to the rotating member.

[0019] In some embodiments, the rotating member includes a support leg, a driving motor four arranged inside the support leg, and the output shaft of the driving motor four extends to the bottom of the support leg and is connected to the support block.

[0020] In some embodiments, a pressing unit is further included. The pressing unit includes a fixing plate arranged on the support leg, an electric push rod two arranged on the fixing plate, a pressing plate arranged above the support block, and the piston rod of the electric push rod two penetrates through the fixing plate and is connected to the pressing plate.

[0021] This application provides a hoisting device for assembling a flame cutting machine. The device can clamp both ends of the workpiece and support the bottom of the workpiece through the frame, drive component, rotating component and support block, thereby firmly clamping the workpiece and preventing it from slipping, and improving the stability of conveying large workpieces.

[0022] By utilizing the coordinated use of the rocker arm, lifting mechanism, drive unit, and grippers, the system integrates linear movement, lifting, clamping, and rotational adjustment functions, significantly improving the efficiency and flexibility of the flame cutting machine assembly process. Operators can quickly and accurately move the workpiece to the designated position and make necessary adjustments.

[0023] By adjusting the rotating parts of the grippers and the support blocks, this lifting equipment can accommodate workpieces of different shapes, sizes, and weights. This design increases the versatility and practicality of the equipment. Attached Figure Description

[0024] 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.

[0025] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ;

[0026] Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ;

[0027] Figure 3 This is a three-dimensional schematic diagram of the clamping unit provided in an embodiment of this application;

[0028] Figure 4 This is a front sectional view of the clamping unit provided in an embodiment of this application;

[0029] Figure 5 This is a right sectional view of the lifting component provided in an embodiment of this application;

[0030] Figure 6 This is a right-side sectional view of the travel track provided in an embodiment of this application.

[0031] In the diagram: 1. Support base; 2. Traveling track; 6. Rocker arm; 3. Lifting component; 4. Clamping unit; 41. Frame; 42. Drive component; 43. Gripper; 431. Rotating component; 432. Support block; 21. Base; 22. Slide rail; 23. Slider; 24. Rack; 25. Drive motor; 26. Gear; 11. Support plate; 12. Column; 13. Guide block; 14. Guide slide rail; 61. Rotating shaft; 62. Support 63. Support arm; 31. Drive motor II; 32. Housing; 33. Reel; 34. Cable; 35. Drive motor III; 46. Cable tray; 47. Metal support beam; 48. Connecting rod; 49. Fixing cylinder; 40. Fixing beam; 41. Through hole; 42. Electric push rod; 43. Support leg; 44. Drive motor IV; 50. Pressing unit; 51. Fixing plate; 52. Electric push rod II; 53. Pressure plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] This application provides a hoisting device for assembling a flame cutting machine, which solves the problem that existing hoisting devices in the related art often lack stability when dealing with large steel parts.

[0034] Please see Figures 1-3 A hoisting device for assembling a flame cutting machine includes: a support base 1 with a travel rail 2 at its bottom, the travel rail 2 driving the support base 1 to move in a straight line; a rocker arm 6 at the top of the support base 1, a lifting member 3 at the other end of the rocker arm 6, a clamping unit 4 connected to the bottom of the lifting member 3, the lifting member 3 driving the clamping unit 4 to rise and fall; the clamping unit 4 includes a frame 41, with two sets of driving members 42 arranged opposite each other at the bottom of the frame 41, the driving members 42 being provided with grippers 43, the two sets of driving members 42 driving multiple grippers 43 on both sides to move closer or further apart; the grippers 43 include a rotating member 431 and a support block 432 connected to each other, the rotating member 431 driving the support block 432 to rotate, the support block 432 supporting the workpiece.

[0035] The travel track 2 drives the support base 1 to move in a straight line, which can move the hoisting equipment to the assembly position of the flame cutting machine or other designated positions. When it is necessary to hoist a workpiece, the lifting component 3 is activated, driving the clamping unit 4 to rise or fall, thereby realizing the vertical lifting or lowering of the workpiece.

[0036] When the lifting component 3 lowers the clamping unit 4 above the workpiece, the two sets of driving components 42 are activated simultaneously, driving the multiple grippers 43 on both sides to move closer together until the side wall of the rotating component 431 contacts the workpiece. Then, the rotating component 431 adjusts the angle of the support block 432 to ensure that the support block 432 can stably support the bottom of the workpiece. This not only improves the stability of clamping but also increases adaptability to workpieces of different shapes and sizes.

[0037] After clamping the workpiece, the rocker arm 6 rotates to adjust the direction and angle of the workpiece to meet the specific requirements of the flame cutting machine assembly process.

[0038] By utilizing the rocker arm 2, lifting component, drive component 42, and gripper 43 in conjunction, multiple functions such as linear movement, lifting, clamping, and rotation adjustment are integrated into one unit, greatly improving the efficiency and flexibility of the flame cutting machine assembly process. Operators can quickly and accurately move the workpiece to the designated position and make necessary adjustments.

[0039] The rotating component 431 and the support block 432 can clamp both ends of the workpiece and support the bottom of the workpiece, thereby firmly clamping the workpiece and preventing it from slipping, improving the stability of conveying large workpieces.

[0040] By adjusting the rotating part 431 of the gripper 43 and the support block 432, this lifting device can accommodate workpieces of different shapes, sizes, and weights. This design increases the versatility and practicality of the equipment.

[0041] like Figure 1 and Figure 3 In one embodiment, the travel track 2 includes: a base 21, two slide rails 22 disposed opposite to each other on the base 21, a plurality of sliders 23 slidably disposed on the slide rails 22, the top ends of the sliders 23 being connected to the support base 1; a rack 24 disposed on the base 21, two drive motors 25 disposed opposite to each other on the support base 1, the output shaft of the drive motor 25 passing through the support base 1 and extending to the base 21, the output shaft of the drive motor 25 being provided with a gear 26, the gear 26 meshing with the rack 24.

[0042] The base 21 serves as the supporting foundation for the entire travel track 2, while the slide rail 22 provides a smooth and stable movement path for the slider 23. The top of the slider 23 is connected to the support base 1 and fixed together by bolts or welding to form an integral structure.

[0043] The rack 24 is mounted on the base 21, parallel to or slightly inclined to the slide rail 22. The tooth profile of the rack 24 matches that of the gear 26, ensuring that the two can mesh accurately and reliably.

[0044] When the hoisting equipment needs to be moved, both drive motors 25 start simultaneously. Their output shafts drive gear 26 to rotate. Gear 26 meshes with rack 24, converting rotational motion into linear motion, thereby driving the support base 1 and the entire hoisting equipment to slide smoothly on the slide rail 22. By controlling the speed and direction of the drive motors 25, the moving speed and direction of the hoisting equipment can be precisely controlled.

[0045] like Figure 1 and Figure 2 As shown, the support base 1 in this embodiment includes a support plate 11 and a column 12 connected to each other. Two guide blocks 13 are arranged opposite each other on one side of the support plate 11. A guide slide rail 14 is provided on the base 21. The guide blocks 13 and the guide slide rail 14 are slidably engaged.

[0046] The column 12 is vertically connected to the support plate 11, serving as the support leg of the entire support base and ensuring the stability of the hoisting equipment. The rotating shaft 61 is the rotation center of the rocker arm 6, and it is rotatably mounted on the column 12, ensuring that the rocker arm 6 can rotate smoothly around it.

[0047] like Figure 1 and Figure 2 The rocker arm 6 shown is rotatably mounted on a shaft 61 on a column 12, and a support arm 62 is mounted on the shaft 61. A second drive motor 63 is mounted on the column 12, and the output shaft of the second drive motor 63 is connected to one end of the shaft 61 and is used to drive the shaft 61 to rotate. A reducer is also included on the column 12, with the output shaft of the second drive motor 63 connected to the input shaft of the reducer, and the output shaft of the reducer connected to either end of the shaft 61.

[0048] The support arm 62 is connected to the rotating shaft 61 and is used to support the lifting component 3 and the clamping unit 4 to realize the hoisting and rotation adjustment of the workpiece.

[0049] When drive motor 63 starts, it drives shaft 61 to rotate, which in turn drives support arm 62 and the lifting component 3 and clamping unit 4 above to rotate together. By controlling the rotation direction and speed of drive motor 63, the operator can precisely adjust the orientation and angle of the workpiece to meet the specific needs of the flame cutting machine assembly process.

[0050] like Figure 2 and Figure 5As shown, specifically, the lifting component 3 in this embodiment includes a housing 31 disposed at one end of the support arm 62. A drive motor 34 is disposed at one end of the housing 31, and a winding reel 32 disposed inside the housing 31 is rotatably mounted thereon. A cable 33 is wound around the winding reel 32. The output shaft of the drive motor 34 is connected to the winding reel 32. A cable outlet 35 is disposed at the bottom of the housing 31, and one end of the cable 33 extends outward through the cable outlet 35.

[0051] One end of the cable 33 is connected to the clamping unit 4, and the other end extends outward through the cable tray 35 at the bottom of the housing 31 to ensure smooth movement and arrangement of the cable 33. The cable tray 35 is an opening at the bottom of the housing 31 that allows the cable 33 to extend outward from the inside of the housing 31.

[0052] When it is necessary to raise the clamping unit 4, the drive motor 34 starts and drives the winding reel 32 to rotate clockwise. At this time, the cable 33 is wound onto the winding reel 32, thereby driving the clamping unit 4 to rise.

[0053] Conversely, when it is necessary to lower the clamping unit 4, the drive motor 34 drives the take-up reel 32 to rotate counterclockwise. At this time, the cable 33 is released from the take-up reel 32, and the clamping unit 4 descends accordingly.

[0054] like Figure 4 and Figure 4 As shown, in one embodiment, the frame 41 includes: a metal support beam 411, and a plurality of connecting rods 412 disposed above the metal support beam 411, with a fixing cylinder 413 disposed between the plurality of connecting rods 412, and the cable 33 extending outward to one end and connecting to the fixing cylinder 413.

[0055] The metal support beam 411 is the main structure of the frame 41, providing sufficient strength and stability to support the workpiece and resist various forces during the hoisting process.

[0056] The connecting rod 412 is positioned above the metal support beam 411, connecting multiple metal support beams 411 together to form a stable frame structure.

[0057] The main function of the fixed cylinder 413 is to serve as a fixing point for the cable 33. When the drive motor 34 of the lifting component 3 starts and drives the winding reel 32 to rotate, the cable 33 will drive the fixed cylinder 413 and the entire frame 41 to rise or fall, thereby realizing the lifting operation of the workpiece.

[0058] The metal support beam 411, connecting rod 412 and fixing cylinder 413 are fixed together by welding to ensure the stability and strength of the frame 41.

[0059] The cable 33 is connected to the fixed cylinder 413 by means of clamping, binding and welding as a whole to ensure that the cable 33 will not fall off or loosen during the lifting process.

[0060] As Figure 4 shown, in one embodiment, the driving member 42 includes a fixed beam 421 provided at the bottom of the metal support beam 411. The fixed beam 421 is in the shape of a "king" character. Three through holes 422 are provided inside the fixed beam 421. Two electric push rods 423 are oppositely arranged inside the through holes 422. The piston rod of the electric push rod 423 is connected to the rotating member 431.

[0061] The fixed beam 421 is designed in the shape of a "king" character, which not only provides sufficient strength and stability, but also facilitates the installation and arrangement of the electric push rods ......

[0062] The through holes 422 are used to accommodate and support the electric push rods 423 to ensure that the electric push rods 423 can work smoothly and reliably.

[0063] When the electric push rod 423 is started, it will push or pull the piston rod, and then drive the rotating member 431 to perform clamping or releasing actions.

[0064] As Figure 4 shown, in this embodiment, the rotating member 431 includes a support leg 4311, a driving motor four 4312 provided inside the support leg 4311. The output shaft of the driving motor four 4312 extends to the bottom of the support leg 4311 and is connected to the support block 432. It also includes a reducer provided inside the support leg 4311. The output shaft of the driving motor four 4312 is connected to the input shaft of the reducer. The output shaft of the reducer is connected to the support block 432. The reducer decelerates the driving motor four 4312 and increases the torque at the same time.

[0065] The support leg 4311 is the main structure of the rotating member 431, which provides sufficient strength and stability to support the driving motor four 4312 and the workpiece connected thereto.

[0066] At the same time, the side wall of the support leg 4311 contacts the workpiece to provide clamping for the workpiece.

[0067] When the driving motor four 4312 is started, the driving output shaft rotates, and then drives the support block 432 to rotate to stably support the bottom of the workpiece.

[0068] As Figure 4 It should be noted that there seems to be an incomplete expression in the translation of sentence . You may check and correct it according to the actual situation.As shown, in a preferred embodiment, this embodiment also includes a pressing unit 5, which includes a fixing plate 51 disposed on the support leg 4311, an electric push rod 52 disposed on the fixing plate 51, and a pressure plate 53 disposed above the support block 432. The piston rod of the electric push rod 52 passes through the fixing plate 51 and is connected to the pressure plate 53.

[0069] To prevent workpiece swaying during transport and further enhance its stability and safety during clamping, the following measures are taken:

[0070] The fixed plate 51 is the basic structure of the pressing unit 5, providing stable support for the electric push rod 52 and the pressure plate 53.

[0071] The electric push rod 52 is the power source of the pressing unit 5, responsible for driving the pressure plate 53 to move up and down to realize the pressing operation on the workpiece.

[0072] The pressure plate 53 is the component in the pressing unit 5 that directly acts on the workpiece, thereby pressing the workpiece and ensuring that the workpiece can be pressed evenly and stably.

[0073] When the electric push rod 52 is started, it pushes or pulls the piston rod, which in turn drives the pressure plate 53 to move up and down. By controlling the extension and retraction of the electric push rod 52, the pressure of the pressure plate 53 on the workpiece can be precisely adjusted to meet the different workpieces and processing requirements.

[0074] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0075] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0076] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A hoisting apparatus for flame cutting machine assembly, characterized in that, include: A support base (1) is provided with a travel track (2) at its bottom, the travel track (2) being used to drive the support base (1) to move in a straight line; The support base (1) is provided with a rocker arm (6) at the top end, and a lifting member (3) is provided at the other end of the rocker arm (6). The lifting member (3) is connected to a clamping unit (4) at the bottom. The lifting member (3) is used to drive the clamping unit (4) to move up and down. The clamping unit (4) includes a frame (41), and two sets of driving members (42) are arranged opposite each other at the bottom of the frame (41). The driving members (42) are provided with grippers (43). The two sets of driving members (42) drive multiple grippers (43) on both sides to move closer or further apart. The gripper (43) includes a rotating component (431) and a support block (432) connected to each other. The rotating component (431) is used to drive the support block (432) to rotate, and the support block (432) is used to support the workpiece.

2. The hoisting equipment for assembling a flame cutting machine as described in claim 1, characterized in that: The travel track (2) includes: a base (21), two slide rails (22) disposed opposite to each other on the base (21), and a plurality of sliders (23) slidably disposed on the slide rails (22), the top of the sliders (23) being connected to the support base (1); A rack (24) is mounted on the base (21), and two drive motors (25) are mounted on the support (1). The output shaft of the drive motor (25) passes through the support (1) and extends to the base (21). The output shaft of the drive motor (25) is provided with a gear (26), which meshes with the rack (24).

3. The hoisting equipment for assembling a flame cutting machine as described in claim 2, characterized in that: The support base (1) includes a support plate (11) and a column (12) connected to each other. Two guide blocks (13) are arranged opposite each other on one side of the support plate (11). A guide slide rail (14) is provided on the base (21). The guide blocks (13) and the guide slide rail (14) slide in cooperation.

4. The hoisting equipment for assembling a flame cutting machine as described in claim 3, characterized in that: The rocker arm (6) is rotatably mounted on a rotating shaft (61) on a column (12), and a support arm (62) is mounted on the rotating shaft (61). A second drive motor (63) is mounted on the column (12). The output shaft of the second drive motor (63) is connected to one end of the rotating shaft (61) and is used to drive the rotating shaft (61) to rotate.

5. The hoisting equipment for assembling a flame cutting machine as described in claim 1, characterized in that: The lifting component (3) includes a housing (31) disposed at one end of the support arm (62), a drive motor (34) is disposed at one end of the housing (31), a take-up reel (32) disposed inside the housing (31) is rotated, a cable (33) is wound on the take-up reel (32), and the output shaft of the drive motor (34) is connected to the take-up reel (32). The bottom of the housing (31) is provided with a cable tray (35), and one end of the cable (33) extends outward through the cable tray (35).

6. The hoisting equipment for assembling a flame cutting machine as described in claim 5, characterized in that: The frame (41) includes a metal support beam (411) and a plurality of connecting rods (412) disposed above the metal support beam (411). A fixing cylinder (413) is disposed between the plurality of connecting rods (412), and the cable (33) extends outward to one end and is connected to the fixing cylinder (413).

7. The hoisting equipment for assembling a flame cutting machine as described in claim 1, characterized in that: The drive component (42) includes a fixed beam (421) disposed at the bottom of the metal support beam (411). The fixed beam (421) is shaped like a "king". The fixed beam (421) has three through holes (422) inside. Two electric push rods (423) are disposed opposite each other inside the through holes (422). The piston rod of the electric push rod (423) is connected to the rotating component (431).

8. The hoisting equipment for assembling a flame cutting machine as described in claim 1, characterized in that: The rotating component (431) includes a support leg (4311) and a drive motor (4312) disposed inside the support leg (4311). The output shaft of the drive motor (4312) extends to the bottom of the support leg (4311) and is connected to the support block (432).

9. The hoisting equipment for assembling a flame cutting machine as described in claim 8, characterized in that: It also includes a pressing unit (5), which includes a fixed plate (51) on the support leg (4311), an electric push rod (52) on the fixed plate (51), and a pressure plate (53) arranged above the support block (432). The piston rod of the electric push rod (52) passes through the fixed plate (51) and is connected to the pressure plate (53).

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