A wire drawing mechanism for a deburring and wire drawing machine

Abstract

This utility model discloses a wire drawing mechanism for a deburring and wire drawing machine, relating to the technical field of deburring and wire drawing equipment. The deburring and wire drawing machine includes a frame platform and a wire drawing mechanism on the frame platform. A sample is placed on the deburring and wire drawing machine. The wire drawing mechanism includes a wire drawing lifting unit for drawing the sample and a floating motor unit for providing power to the wire drawing lifting unit. The wire drawing lifting unit is equipped with front and rear pressure roller units to prevent the sample from being thrown away by the wire drawing lifting unit during the wire drawing process. The wire drawing lifting unit includes a transmission component, a wire drawing component, and two lifting supports. The front and rear pressure roller units include two sets of symmetrically distributed limiting components, both of which are connected to the lifting supports. The wire drawing lifting unit draws the sample through the wire drawing rollers. The front and rear pressure roller units press the sample tightly onto the conveyor belt in the deburring and wire drawing machine to prevent the sample from being thrown away by the wire drawing rollers. The floating motor unit keeps the V-belt in a taut state.

Description

Technical Field

[0001] This utility model relates to the technical field of deburring and wire drawing machine equipment, and in particular to a wire drawing mechanism for a deburring and wire drawing machine. Background Technology

[0002] In modern manufacturing, deburring and wire drawing are crucial processes in product surface treatment, especially in the metal processing industry, where they are widely used for precision machining of metal parts, deburring, and improving surface smoothness. Deburring and wire drawing machines, as efficient mechanical equipment, primarily use the relative motion between the drawing roller and the workpiece to polish the workpiece surface, removing excess burrs and defects, thereby improving the surface quality of the workpiece.

[0003] Traditional deburring and wire drawing machines typically rely on a relatively simple structural design, using fixed drawing rollers and conveying devices. While they can complete basic wire drawing tasks, their adaptability and efficiency are limited when dealing with workpieces of different sizes and thicknesses. Furthermore, with prolonged use, the drawing rollers gradually wear down due to friction and wear, resulting in a reduction in diameter and affecting the wire drawing effect. This wear and tear problem has not been effectively solved in many traditional machines, often leading to frequent replacement of drawing rollers or adjustments to the equipment, increasing maintenance costs. Therefore, this invention provides a wire drawing mechanism for a deburring and wire drawing machine. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model discloses a wire drawing mechanism for a deburring and wire drawing machine. The deburring and wire drawing machine includes a frame platform, on which a wire drawing mechanism is mounted. A sample is placed on the deburring and wire drawing machine. The wire drawing mechanism includes a wire drawing lifting unit for drawing the sample and a floating motor unit for providing power to the wire drawing lifting unit. The wire drawing lifting unit is equipped with front and rear pressure roller units to prevent the sample from being knocked away by the wire drawing lifting unit during the wire drawing process.

[0005] The wire drawing lifting unit includes a transmission component, a wire drawing component, and two lifting supports. The wire drawing component and the transmission component are connected, and both the transmission component and the wire drawing component are connected to the lifting supports. The two lifting supports are symmetrically distributed and fixedly installed on the frame platform.

[0006] The front and rear pressure roller unit includes two sets of symmetrically distributed limiting components, both of which are connected to the lifting support.

[0007] Furthermore, the transmission assembly includes a stepper motor and a transmission shaft. The stepper motor is fixedly mounted on a lifting support. Both ends of the transmission shaft are detachably mounted with screw jacks via couplings. The screw jacks are fixedly mounted on the lifting support. The screw jack at one end of the transmission shaft is detachably mounted to the output end of the stepper motor.

[0008] Furthermore, the wire drawing assembly includes a wire drawing roller support, on which a wire drawing roller is rotatably mounted. A three-groove pulley is fixedly mounted at one end of the wire drawing roller. Both ends of the wire drawing roller support are slidably connected to two lifting supports respectively. Two lead screw connecting bearing seats are fixedly mounted on the wire drawing roller support. The two lead screw connecting bearing seats are rotatably connected to the lead screws on two lead screw jacks respectively. The lead screws on the lead screw jacks are threadedly engaged with the lifting supports.

[0009] Furthermore, the wire drawing assembly also includes a sensor mounting bracket and two symmetrically distributed sliding rod connecting seats. The two sliding rod connecting seats are respectively fixedly mounted on two lifting supports. A sliding rod is slidably installed in the sliding rod connecting seat. One end of the sliding rod is fixedly mounted on the wire drawing roller support. The sensor mounting bracket is fixedly mounted on one of the lifting supports and close to one side of the lifting support. A proximity switch is fixedly mounted on the sensor mounting bracket.

[0010] Furthermore, the limiting component includes a pressure roller and two symmetrically distributed pressure roller mounting seats. The two pressure roller mounting seats are respectively fixedly connected to two lifting supports. The pressure roller is disposed between the two pressure roller mounting seats. A slider is rotatably mounted on both ends of the pressure roller. The slider is slidably mounted inside the pressure roller mounting seat. A lead screw is rotatably mounted on the slider. A spring is sleeved on the lead screw. The two ends of the spring are respectively connected to the pressure roller mounting seat and the slider. Nut 1 and nut 2 are threadedly connected to the lead screw. Nut 1 and nut 2 are located outside the pressure roller mounting seat. A fixing plate is fixedly mounted inside the pressure roller mounting seat. A lead screw 2 is threadedly connected to the fixing plate. Nut 3 is threadedly connected to the lead screw 2. The lead screw 2 is in contact with the slider.

[0011] Furthermore, the floating motor unit includes a motor mounting plate, which is hinged to the frame platform via a pin. A three-phase asynchronous motor is fixedly mounted on the motor mounting plate. A brake disc and a second three-groove pulley are fixedly mounted on the output end of the three-phase asynchronous motor. The second three-groove pulley is connected to the first three-groove pulley via a V-belt. A brake cylinder is fixedly mounted on the motor mounting plate and works in conjunction with the brake disc.

[0012] Furthermore, the floating motor unit also includes a telescopic cylinder, the cylinder arm of which is hinged to a cylinder arm hinge seat, the cylinder arm hinge seat being fixedly connected to the motor mounting plate, and the cylinder barrel of the telescopic cylinder being hinged to a cylinder barrel hinge seat, the cylinder barrel hinge seat being fixedly connected to the frame platform.

[0013] The advantages of this utility model compared with the prior art are as follows: This utility model is equipped with a wire drawing lifting unit, a front and rear pressure roller unit, and a floating motor unit. The wire drawing lifting unit draws the sample through the wire drawing roller. The front and rear pressure roller units press the sample tightly onto the conveyor belt in the deburring and wire drawing machine to prevent the sample from being blown away by the wire drawing roller. Since the thickness of the sample being drawn is different, the wire drawing roller is a consumable material that will be gradually consumed during the wire drawing process, causing the diameter of the wire drawing roller to become smaller. Therefore, the distance between the wire drawing roller and the conveyor mechanism needs to be adjusted. The floating motor unit keeps the V-belt in a taut state at all times, saving the debugging time of traditional processes and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model.

[0015] Figure 2 This is a top view of the overall structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the wire drawing lifting unit structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the wire drawing lifting unit of this utility model from another angle.

[0018] Figure 5 This is a schematic diagram of the front and rear pressure roller unit structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the front and rear pressure roller units of this utility model from another angle.

[0020] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point A in the middle.

[0021] Figure 8 This is a schematic diagram of the floating motor unit structure of this utility model.

[0022] Figure 9 This is a schematic diagram of the floating motor unit of this utility model from another angle.

[0023] Reference numerals: 1-Frame platform; 2-Lifting support; 3-Wire drawing lifting unit; 4-V-belt; 5-Front and rear pressure roller unit; 6-Floating motor unit; 7-Sample; 301-Wire drawing roller support; 302-Three-groove pulley one; 303-Screw connecting bearing seat; 304-Coupling; 305-Sliding rod; 306-Sliding rod connecting seat; 307-Wire drawing roller; 308-Stepper motor; 309-Proximity switch; 310-Sensor mounting bracket; 311-Screw jack; 312 - Drive shaft; 501- Pressure roller mounting base; 502- Pressure roller; 503- Slider; 504- Spring; 505- Lead screw one; 506- Nut one; 507- Nut two; 508- Fixing plate; 509- Lead screw two; 510- Nut three; 601- Motor mounting plate; 602- Three-phase asynchronous motor; 603- Brake disc; 604- Three-groove pulley two; 605- Pin; 606- Telescopic cylinder; 607- Cylinder hinge seat; 608- Cylinder arm hinge seat; 609- Brake cylinder. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example: Figure 1 , Figure 2 As shown, a wire drawing mechanism for a deburring and wire drawing machine is applied to the deburring and wire drawing machine. The deburring and wire drawing machine includes a frame platform 1, on which a wire drawing mechanism is installed. A sample 7 is set on the deburring and wire drawing machine. The wire drawing mechanism includes a wire drawing lifting unit 3 for drawing the sample 7 and a floating motor unit 6 for providing power to the wire drawing lifting unit 3. The wire drawing lifting unit 3 is provided with front and rear pressure roller units 5 to prevent the sample 7 from being blown away by the wire drawing lifting unit 3 during the wire drawing process.

[0028] like Figure 3 , Figure 4 As shown, the wire drawing lifting unit 3 includes a transmission component, a wire drawing component, and two lifting supports 2. The wire drawing component and the transmission component are connected, and both the transmission component and the wire drawing component are connected to the lifting supports 2. The two lifting supports 2 are symmetrically distributed and fixedly installed on the frame platform 1. Through the above scheme, the transmission component drives the wire drawing component to move up and down, so that the wire drawing component can perform wire drawing on the sample 7.

[0029] The transmission assembly includes a stepper motor 308 and a drive shaft 312. The stepper motor 308 is fixedly mounted on a lifting support 2. Both ends of the drive shaft 312 are detachably mounted with screw jacks 311 via couplings 304. The screw jacks 311 are fixedly mounted on the lifting support 2. The screw jack 311 at one end of the drive shaft 312 is detachably mounted to the output end of the stepper motor 308. Through this scheme, the output end of the stepper motor 308 drives the screw jack 311 at one end of the drive shaft 312 to move. The screw jack 311 at one end of the drive shaft 312 drives the screw jack 311 at the other end of the drive shaft 312 to move via couplings 304 and the drive shaft 312. The detachable mounting of the screw jack 311 at one end of the drive shaft 312 to the output end of the stepper motor 308 facilitates installation and subsequent maintenance.

[0030] The wire drawing assembly includes a wire drawing roller support 301, on which a wire drawing roller 307 is rotatably mounted. A three-groove pulley 302 is fixedly mounted at one end of the wire drawing roller 307. Both ends of the wire drawing roller support 301 are slidably connected to two lifting supports 2. Two lead screw connecting bearing seats 303 are fixedly mounted on the wire drawing roller support 301. The two lead screw connecting bearing seats 303 are rotatably connected to the lead screws on two lead screw jacks 311. The lead screws on the lead screw jacks 311 are threadedly engaged with the lifting supports 2. Through the above scheme, the three-groove pulley 302 drives the wire drawing roller 307 to rotate on the wire drawing roller support 301. The lead screws on the two lead screw jacks 311 work together to drive the wire drawing roller 307 to move up and down through the wire drawing roller support 301, which facilitates the wire drawing roller 307 to perform wire drawing on the sample 7.

[0031] The wire drawing assembly also includes a sensor mounting bracket 310 and two symmetrically distributed sliding rod connecting seats 306. The two sliding rod connecting seats 306 are respectively fixedly mounted on two lifting supports 2. A sliding rod 305 is slidably installed in the sliding rod connecting seat 306. One end of the sliding rod 305 is fixedly mounted on the wire drawing roller support 301. The sensor mounting bracket 310 is fixedly mounted on one of the lifting supports 2 and close to one side of the lifting support 2. A proximity switch 309 is fixedly mounted on the sensor mounting bracket 310. Through the above scheme, the sensor mounting bracket 310 serves as the origin signal sensor. The sliding rod 305 cooperates with the sliding rod connecting seat 306 to facilitate the up and down movement of the wire drawing roller support 301.

[0032] like Figures 5-7 As shown, the front and rear pressure roller unit 5 includes two sets of symmetrically distributed limiting components. Both sets of limiting components are connected to the lifting support 2. The limiting components include a pressure roller 502 and two symmetrically distributed pressure roller mounting seats 501. The two pressure roller mounting seats 501 are fixedly connected to the two lifting supports 2 respectively. The pressure roller 502 is disposed between the two pressure roller mounting seats 501. A slider 503 is rotatably mounted on both ends of the pressure roller 502. The slider 503 is slidably mounted in the pressure roller mounting seat 501. A lead screw 505 is rotatably mounted on the slider 503. A spring 504 is sleeved on the lead screw 505. The two ends of the spring 504 are connected to the pressure roller mounting seat 501 and the slider 503 respectively. Nuts 507 and 506 are threadedly connected to the lead screw 505. 507 is located on the outside of the pressure roller mounting base 501. A fixing plate 508 is fixedly installed inside the pressure roller mounting base 501. A screw rod 509 is threaded onto the fixing plate 508. A nut 510 is threaded onto the screw rod 509. The screw rod 509 contacts the slider 503. Through the above scheme, the screw rod 509 is rotated to make it contact the slider 503 and the slider 503 is adjusted to a suitable height. Then the nut 510 is rotated and contacts the fixing plate 508. Then the nut 507 is turned so that it contacts the pressure roller mounting base 501. Then the nut 506 is turned so that it contacts the nut 507. The pressure roller 502 presses the sample 7 tightly onto the conveyor belt in the deburring and drawing machine to prevent the sample 7 from being knocked away by the drawing roller 307.

[0033] like Figure 8 , Figure 9As shown, the floating motor unit 6 includes a motor mounting plate 601, which is hinged to the frame platform 1 via a pin 605. A three-phase asynchronous motor 602 is fixedly mounted on the motor mounting plate 601. A brake disc 603 and a three-groove pulley 604 are fixedly mounted on the output end of the three-phase asynchronous motor 602. The three-groove pulley 604 and the three-groove pulley 602 are connected via a V-belt 4. A brake cylinder 609 is fixedly mounted on the motor mounting plate 601 and works in conjunction with the brake disc 603. The floating motor unit 6 also includes a telescopic cylinder 606. The cylinder arm of the telescopic cylinder 606 is hinged to a cylinder arm hinge seat 608, which is fixedly connected to the motor mounting plate 601. The cylinder barrel of the telescopic cylinder 606 is hinged to a cylinder barrel hinge seat 607, which is fixedly connected to the frame platform 1. Through the above scheme, the three-phase asynchronous motor... The motor 602 drives the brake disc 603 and the second three-groove pulley 604 to rotate. The second three-groove pulley 604 drives the first three-groove pulley 302 to rotate via the V-belt 4. This causes the first three-groove pulley 302 to drive the wire drawing roller 307 to rotate and perform wire drawing on the sample 7. Since the thickness of the sample 7 being drawn varies, the wire drawing roller 307 is a consumable and will be gradually consumed during the wire drawing process, causing the diameter of the wire drawing roller 307 to become smaller. Therefore, the distance between the wire drawing roller 307 and the conveying mechanism needs to be adjusted. During the adjustment process, the distance between the first three-groove pulley 302 and the second three-groove pulley 604 will also change. Since the motor mounting plate 601 is hinged on the frame platform 1, the telescopic cylinder 606 is activated. The cylinder arm of the telescopic cylinder 606 extends, causing the motor mounting plate 601 to rotate around the pin shaft 605. The three-phase asynchronous motor 602 keeps the V-belt 4 in a taut state by its own weight.

[0034] Working principle: Sample 7 is placed on the conveyor belt of the deburring and wire drawing machine. Then, the stepper motor 308 is started, causing the stepper motor 308 to drive the screw jack 311 at one end of the drive shaft 312. The screw jack 311 at one end of the drive shaft 312 drives the drive shaft 312 to rotate through the coupling 304. The drive shaft 312 drives the screw jack 311 at the other end of the drive shaft 312 to rotate through the coupling 304. The screws on the two screw jacks 311 drive the wire drawing roller support 301 to move up and down. An asynchronous motor 602 drives a brake disc 603 and a three-groove pulley 604 to rotate. The three-groove pulley 604 drives a three-groove pulley 302 to rotate via a V-belt 4. This causes the three-groove pulley 302 to drive the wire drawing roller 307 to rotate and perform wire drawing on the sample 7. The lead screw 509 is rotated so that it contacts the slider 503 and the slider 503 is adjusted to a suitable height. Then, the nut 510 is rotated and contacts the fixing plate 508. Finally, the nut 507 is tightened so that the nut 507... 07 contacts the pressure roller mounting base 501, then tighten nut 1 506 so that nut 1 506 contacts nut 2 507. Pressure roller 502 presses sample 7 firmly onto the conveyor belt in the deburring and drawing machine to prevent sample 7 from being thrown away by pressure roller 502. Because the thickness of the sample 7 being drawn varies, and drawing roller 307 is a consumable material, it will be gradually consumed during the drawing process, causing the diameter of drawing roller 307 to decrease. Therefore, the distance between drawing roller 307 and the conveyor mechanism needs to be adjusted. During the adjustment process, the three-groove pulley 1 302 and the three-groove pulley 302... The distance between the two 604 will also change. Since the motor mounting plate 601 is hinged on the frame platform 1, the telescopic cylinder 606 is activated. The cylinder arm of the telescopic cylinder 606 extends, causing the motor mounting plate 601 to rotate around the pin shaft 605. The three-phase asynchronous motor 602 keeps the V-belt 4 taut by its own weight, so that the wire drawing roller 307 can always draw the sample 7. When an emergency stop is required, the brake disc 603 and the three-groove pulley 604 work together to facilitate the emergency stop of 602.

[0035] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A wire drawing mechanism for a deburring and wire drawing machine, applied to a deburring and wire drawing machine, the deburring and wire drawing machine including a frame platform (1), a wire drawing mechanism mounted on the frame platform (1), and a sample (7) provided on the deburring and wire drawing machine, characterized in that: The wire drawing mechanism includes a wire drawing lifting unit (3) for drawing the sample (7) and a floating motor unit (6) for providing power to the wire drawing lifting unit (3). The wire drawing lifting unit (3) is provided with front and rear pressure roller units (5) to prevent the sample (7) from being blown away by the wire drawing lifting unit (3) during the wire drawing process. The wire drawing lifting unit (3) includes a transmission component, a wire drawing component and two lifting supports (2). The wire drawing component and the transmission component are connected. Both the transmission component and the wire drawing component are connected to the lifting supports (2). The two lifting supports (2) are symmetrically distributed and fixedly installed on the frame platform (1). The front and rear pressure roller unit (5) includes two sets of symmetrically distributed limiting components, both of which are connected to the lifting support (2).

2. A wire drawing mechanism for a thornless wire drawing machine as claimed in claim 1, characterized in that: The transmission assembly includes a stepper motor (308) and a drive shaft (312). The stepper motor (308) is fixedly mounted on a lifting support (2). Both ends of the drive shaft (312) are detachably mounted with screw jacks (311) via couplings (304). The screw jacks (311) are fixedly mounted on the lifting support (2). The screw jacks (311) at one end of the drive shaft (312) are detachably mounted to the output end of the stepper motor (308).

3. A wire drawing mechanism for a thornless wire drawing machine as claimed in claim 2, characterized in that: The wire drawing assembly includes a wire drawing roller support (301), on which a wire drawing roller (307) is rotatably mounted. A three-groove pulley (302) is fixedly mounted at one end of the wire drawing roller (307). Both ends of the wire drawing roller support (301) are slidably connected to two lifting supports (2). Two screw connecting bearing seats (303) are fixedly mounted on the wire drawing roller support (301). The two screw connecting bearing seats (303) are rotatably connected to the screws on two screw jacks (311). The screws on the screw jacks (311) are threadedly engaged with the lifting supports (2).

4. A wire drawing mechanism for a thornless wire drawing machine as claimed in claim 3, characterized in that: The wire drawing assembly also includes a sensor mounting bracket (310) and two symmetrically distributed sliding rod connecting seats (306). The two sliding rod connecting seats (306) are respectively fixedly mounted on two lifting supports (2). A sliding rod (305) is slidably mounted in the sliding rod connecting seat (306). One end of the sliding rod (305) is fixedly mounted on the wire drawing roller support (301). The sensor mounting bracket (310) is fixedly mounted on one of the lifting supports (2) and close to one side of the lifting support (2). A proximity switch (309) is fixedly mounted on the sensor mounting bracket (310).

5. A wire drawing mechanism for a thornless wire drawing machine as claimed in claim 4, characterized in that: The limiting component includes a pressure roller (502) and two symmetrically distributed pressure roller mounting seats (501). The two pressure roller mounting seats (501) are respectively fixedly connected to two lifting supports (2). The pressure roller (502) is disposed between the two pressure roller mounting seats (501). Slider blocks (503) are rotatably mounted on both ends of the pressure roller (502). The sliders (503) are slidably mounted in the pressure roller mounting seats (501). A lead screw (505) is rotatably mounted on the slider (503). A spring (504) is sleeved on the lead screw (505). 04) is connected to the pressure roller mounting base (501) and the slider (503) at both ends respectively. Nut 2 (507) and nut 1 (506) are threaded on the screw 1 (505). Nut 1 (506) and nut 2 (507) are located on the outside of the pressure roller mounting base (501). A fixing plate (508) is fixedly installed inside the pressure roller mounting base (501). Screw 2 (509) is threaded on the fixing plate (508). Nut 3 (510) is threaded on the screw 2 (509). Screw 2 (509) is in contact with the slider (503).

6. The wire drawing mechanism for a deburring and wire drawing machine as described in claim 5, characterized in that: The floating motor unit (6) includes a motor mounting plate (601), which is hinged to the frame platform (1) via a pin (605). A three-phase asynchronous motor (602) is fixedly mounted on the motor mounting plate (601). A brake disc (603) and a three-groove pulley two (604) are fixedly mounted on the output end of the three-phase asynchronous motor (602). The three-groove pulley two (604) is connected to the three-groove pulley one (302) via a V-belt (4). A brake cylinder (609) is fixedly mounted on the motor mounting plate (601). The brake cylinder (609) works in conjunction with the brake disc (603).

7. A wire drawing mechanism for a thornless wire drawing machine as claimed in claim 6, characterized in that: The floating motor unit (6) also includes a telescopic cylinder (606), the cylinder arm of the telescopic cylinder (606) is hinged with a cylinder arm hinge seat (608), the cylinder arm hinge seat (608) is fixedly connected to the motor mounting plate (601), the cylinder barrel of the telescopic cylinder (606) is hinged with a cylinder barrel hinge seat (607), the cylinder barrel hinge seat (607) is fixedly connected to the frame platform (1).

Images