An automated feeding robot arm can continuously take material from the vibrating plate

Abstract

The present invention provides a vibrating plate that can be continuously taken out by an automated feeding robot arm. The vibrating plate that can be continuously taken out by the automated feeding robot arm comprises a lower support plate, the upper surface of the lower support plate is fixedly connected to a lateral support frame, the upper side of the lateral support frame is fixedly connected to a connecting bracket, the upper surface of the lower support plate is fixedly connected to a box body, the side surface of the box body is provided with a switch, and the box body is provided with a plurality of adjustment buttons. The vibrating plate that can be continuously taken out by the automated feeding robot arm effectively solves the problem of unstable output speed of the vibrating plate by designing a linkage structure of an elastic device and an auxiliary elastic device. The elastic sheet, spring fixing sheet and electromagnet in the main elastic device work in coordination to ensure the stability of the vibration output. At the same time, the auxiliary elastic device dynamically adjusts the magnitude and direction of the vibration force through the design of the threaded rod, the auxiliary elastic sheet and the friction block to avoid inconsistent vibration amplitude due to load changes or long-term use.

Description

Technical Field

[0001] The invention relates to the technical field of material-retrieving vibrating plates, and in particular to a vibrating plate capable of continuously retrieving materials by an automated feeding robot arm. Background Art

[0002] An automated feeding robot arm can continuously take materials from a vibrating plate, and is mainly composed of a vibrating plate, a feeding channel, a robot arm, and a control system. The vibrating plate is driven by an electromagnetic vibration device to achieve directional arrangement and quantitative output of materials. The feeding channel is connected to the outlet of the vibrating plate to ensure stable material transportation. The robot arm is equipped with a multi-degree-of-freedom motion mechanism, a visual recognition system, and an end clamp for accurately grasping materials and transporting them to the designated location. The control system coordinates the vibration frequency of the vibrating plate, the feeding speed, and the motion trajectory of the robot arm to achieve continuous material feeding operations. Its working principle is to organize bulk materials through the vibrating plate and output them along the feeding channel. The robot arm completes the material taking and conveying tasks according to the visual recognition results and the instructions of the control system. The entire system ensures high efficiency and a low error rate through precise coordination.

[0003] Unstable vibrating plate output speed: When the vibrating plate output speed is too fast and the feeding channel has low throughput, it is easy for excess material to accumulate in the connection area, causing blockage. Conversely, if the vibrating plate output speed is too slow, the feeding channel may experience intermittent material shortages, affecting the robot arm's material collection efficiency. In addition, during long-term operation, the power of the vibrating plate will decrease. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides an automated feeding robot arm that can continuously take materials from a vibration plate, solving the problem of unstable output speed of the vibration plate; in addition, during long-term operation, the power of the vibration plate will decrease.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automated feeding robot arm can continuously take out material from a vibrating plate, comprising: a lower support plate, the upper surface of which is fixedly connected to a lateral support frame, and the upper side of the lateral support frame is fixedly connected to a connecting bracket;

[0008] The upper surface of the lower support plate is fixedly connected to a box body, a switch is provided on the side surface of the box body, and a plurality of adjustment buttons are provided on the box body;

[0009] An elastic device is located on the upper side of the lower support plate, and the elastic device includes an elastic sheet, a lower support sheet, an electromagnet housing, a second electromagnet, an upper support frame, a first electromagnet and a spring fixing sheet;

[0010] An auxiliary elastic device, comprising a threaded rod mounting bracket, a first nut, a second nut, a threaded rod, an auxiliary elastic sheet, a motor, and a friction block;

[0011] The guiding device includes a connecting groove, a supporting inclined rod, a connecting block, an anti-loss sheet and raw materials.

[0012] Preferably, a button is fixedly connected to the connecting bracket, and a plurality of supporting legs are provided on the lower side of the lower supporting plate.

[0013] Preferably: the lower support piece is fixedly connected to the lower support plate, the number of the elastic pieces is multiple and distributed front to back, the elastic piece is fixedly connected to the lower support piece, and the upper end of the elastic piece is fixedly connected to the spring fixing piece.

[0014] Preferably, the electromagnet housing is fixedly connected to the lower support plate, and the first electromagnet is located inside the electromagnet housing.

[0015] Preferably, the upper side of the second electromagnet is fixedly connected to the upper support frame, the side surface of the upper support frame is fixedly connected to the spring fixing piece, and the spring fixing piece is fixedly connected to the upper end of the elastic piece.

[0016] Preferably, the threaded rod mounting bracket is fixedly connected to the lower support plate, the first nut is fixedly connected to the threaded rod, the second nut is threadedly connected to the threaded rod, and the threaded rod is threadedly connected to the threaded rod mounting bracket.

[0017] Preferably: the outer side of the threaded rod is fixedly connected to the auxiliary elastic sheet, the upper side of the auxiliary elastic sheet is fixedly connected to the motor, the motor is arc-shaped, the side surface of the auxiliary elastic sheet is fixedly connected to the friction block, the friction block is provided with a groove, the groove is wedge-shaped, and the upper end of the elastic sheet extends to the inside of the groove.

[0018] Preferably, a vibration plate is fixedly connected to the upper side of the spring fixing plate, and a material guide trough is provided inside the vibration plate.

[0019] Preferably: the upper side of the supporting oblique rod is fixedly connected to the connecting block, the connecting block is fixedly connected to the anti-loss piece, the side surface of the connecting block is fixedly connected to the connecting groove, the raw material is located on the upper side of the connecting block, and the supporting oblique rod is fixedly connected to the lower support plate.

[0020] (3) Beneficial effects

[0021] The present invention provides an automated feeding robot arm capable of continuously retrieving a vibrating plate. It has the following beneficial effects:

[0022] The present invention effectively solves the problem of unstable output speed of the vibration disk by designing a linkage structure of an elastic device and an auxiliary elastic device. The elastic sheet, spring fixing sheet and electromagnet in the main elastic device work in coordination to ensure the stability of the vibration output. At the same time, the auxiliary elastic device dynamically adjusts the magnitude and direction of the vibration force through the design of the threaded rod, auxiliary elastic sheet and friction block, avoiding inconsistent vibration amplitude due to load changes or long-term use. In particular, the wedge-shaped groove design on the friction block utilizes the extended part of the elastic sheet to achieve precise damping control, which greatly reduces the output fluctuation of the vibration disk caused by elastic attenuation during operation, ensuring the continuous material taking efficiency of the automated feeding robot arm.

[0023] The design of the present invention also has significant advantages in terms of long-term operational stability. By cooperating with the threaded rod and the motor in the auxiliary elastic device and utilizing a dynamically adjustable threaded connection method, the angle and preload of the auxiliary elastic sheet can be quickly adjusted when the elasticity decreases, thereby achieving dynamic compensation for the main elastic device. At the same time, the distributed installation of the electromagnet enhances the magnetically controlled elastic recovery capability of the system, and can restore the vibration force by adjusting the force of the electromagnet when the elastic sheet is fatigued. The material guide trough at the bottom of the vibration disk is combined with the anti-loss sheet in the guide device to ensure the stable transfer of materials on the vibration disk, avoiding power consumption and vibration interference caused by material spillage. The overall design improves the operating efficiency of the system and has the ability to quickly restore power to meet the needs of high-intensity work in industrial environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a partial structural diagram of the present invention;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure at center A;

[0027] Figure 4 This is another structural diagram of the present invention;

[0028] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 6 It is another overall structural schematic diagram of the present invention;

[0030] Figure 7 It is a schematic structural diagram of the friction block of the present invention.

[0031] Among them, 1. lower support plate; 2. lateral support frame; 3. connecting bracket; 4. box; 5. switch; 6. adjustment button; 7. first electromagnet; 8. electromagnet housing; 9. second electromagnet; 10. upper support frame; 11. spring fixing plate; 12. elastic device; 13. elastic plate; 14. lower support plate; 15. groove; 16. auxiliary elastic device; 17. threaded rod mounting frame; 18. first nut; 19. second nut; 20. threaded rod; 21. auxiliary elastic plate; 22. motor; 23. vibration plate; 24. connecting groove; 25. supporting diagonal rod; 26. connecting block; 27. anti-loss plate; 28. raw material; 29. ​​button; 30. supporting foot; 31. material guide trough; 32. friction block. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figure 1-7 As shown, an embodiment of the present invention provides an automated feeding robot arm capable of continuously taking out a vibrating plate, comprising a lower support plate 1, a lateral support frame 2 being fixedly connected to the upper surface of the lower support plate 1, a connecting bracket 3 being fixedly connected to the upper side of the lateral support frame 2, a button 29 being fixedly connected to the connecting bracket 3, and a plurality of supporting feet 30 being provided on the lower side of the lower support plate 1;

[0035] The upper surface of the lower support plate 1 is fixedly connected to a box body 4, a switch 5 is provided on the side surface of the box body 4, and a plurality of adjustment buttons 6 are provided on the box body 4;

[0036] The elastic device 12 is located on the upper side of the lower support plate 1. The elastic device 12 includes an elastic sheet 13, a lower support sheet 14, an electromagnet housing 8, a second electromagnet 9, an upper support frame 10, a first electromagnet 7 and a spring fixing sheet 11. The upper side of the spring fixing sheet 11 is fixedly connected to a vibration plate 23, and a material guide trough 31 is provided inside the vibration plate 23.

[0037] Auxiliary elastic device 16, the auxiliary elastic device 16 includes a threaded rod mounting frame 17, a first nut 18, a second nut 19, a threaded rod 20, an auxiliary elastic sheet 21, a motor 22 and a friction block 32;

[0038] The guiding device includes a connecting groove 24, a supporting inclined rod 25, a connecting block 26, an anti-loss piece 27 and a raw material 28.

[0039] In the embodiment, the firm connection between the support plate 1 and the lateral support frame 2 makes the overall stability of the vibration disk 23 higher, and reduces the vibration deviation of the vibration disk 23 caused by the loose support structure during operation. The design of the elastic device 12, through the combination of the elastic sheet 13, the lower support sheet 14, the first electromagnet 7, the second electromagnet 9 and the spring fixing sheet 11, enhances the continuity and adjustment ability of the elastic output, making the vibration disk 23 run more stably. The auxiliary elastic device 16 can provide additional elastic compensation when the working performance of the elastic sheet 13 decreases through the linkage design of the threaded rod mounting frame 17, the threaded rod 20, the auxiliary elastic sheet 21 and the friction block 32. The introduction of the motor 22 can further adjust the vibration force by driving the auxiliary elastic sheet 21 with power to ensure output consistency. The supporting diagonal rod 25 cooperates with the connecting block 26 to ensure the stable transportation of the raw material 28 in the vibration disk 23 and prevent the loss of the raw material 28.

[0040] Example 2

[0041] like Figure 1-7 As shown, an embodiment of the present invention provides an automated feeding robot arm capable of continuously taking out a vibrating plate, comprising a lower support plate 1, a lateral support frame 2 being fixedly connected to the upper surface of the lower support plate 1, and a connecting bracket 3 being fixedly connected to the upper side of the lateral support frame 2;

[0042] The upper surface of the lower support plate 1 is fixedly connected to a box body 4, a switch 5 is provided on the side surface of the box body 4, and a plurality of adjustment buttons 6 are provided on the box body 4;

[0043] The elastic device 12 is located on the upper side of the lower support plate 1. The elastic device 12 includes an elastic sheet 13, a lower support sheet 14, an electromagnet housing 8, a second electromagnet 9, an upper support frame 10, a first electromagnet 7 and a spring fixing sheet 11. The lower support sheet 14 is fixedly connected to the lower support plate 1. The number of elastic sheets 13 is multiple and distributed front to back. The elastic sheet 13 is fixedly connected to the lower support sheet 14. The upper end of the elastic sheet 13 is fixedly connected to the spring fixing sheet 11. The electromagnet housing 8 is fixedly connected to the lower support plate 1. The first electromagnet 7 is located inside the electromagnet housing 8. The upper side of the second electromagnet 9 is fixedly connected to the upper support frame 10. The side surface of the upper support frame 10 is fixedly connected to the spring fixing sheet 11. The spring fixing sheet 11 is fixedly connected to the upper end of the elastic sheet 13.

[0044] Auxiliary elastic device 16, the auxiliary elastic device 16 includes a threaded rod mounting frame 17, a first nut 18, a second nut 19, a threaded rod 20, an auxiliary elastic sheet 21, a motor 22 and a friction block 32;

[0045] The guiding device includes a connecting groove 24, a supporting inclined rod 25, a connecting block 26, an anti-loss piece 27 and a raw material 28.

[0046] In the second embodiment, the number of elastic sheets 13 is increased to improve the uniformity of the vibration force. The number of elastic sheets 13 is multiple and distributed front to back, which further uniformizes the distribution of the vibration force and improves the stability of the vibration disk 23 during operation. The optimized connection between the upper support frame 10 and the spring fixing sheet 11 allows each elastic sheet 13 to participate in the vibration, avoiding the power drop caused by the loss of local elastic sheets 13. The first electromagnet 7 is located inside the electromagnet housing 8 and is linked with the second electromagnet 9. The elastic range of the elastic sheet 13 is adjusted through electromagnetic control, making the system more sensitive to power changes and more efficient.

[0047] Example 3

[0048] like Figure 1-7 As shown, an embodiment of the present invention provides an automated feeding robot arm capable of continuously taking out a vibrating plate, comprising a lower support plate 1, a lateral support frame 2 being fixedly connected to the upper surface of the lower support plate 1, and a connecting bracket 3 being fixedly connected to the upper side of the lateral support frame 2;

[0049] The upper surface of the lower support plate 1 is fixedly connected to a box body 4, a switch 5 is provided on the side surface of the box body 4, and a plurality of adjustment buttons 6 are provided on the box body 4;

[0050] The elastic device 12 is located on the upper side of the lower support plate 1. The elastic device 12 includes an elastic piece 13, a lower support piece 14, an electromagnet housing 8, a second electromagnet 9, an upper support frame 10, a first electromagnet 7 and a spring fixing piece 11;

[0051] The auxiliary elastic device 16 includes a threaded rod mounting frame 17, a first nut 18, a second nut 19, a threaded rod 20, an auxiliary elastic sheet 21, a motor 22 and a friction block 32. The threaded rod mounting frame 17 is fixedly connected to the lower support plate 1, the first nut 18 is fixedly connected to the threaded rod 20, the second nut 19 is threadedly connected to the threaded rod 20, the threaded rod 20 is threadedly connected to the threaded rod mounting frame 17, the outer side of the threaded rod 20 is fixedly connected to the auxiliary elastic sheet 21, the upper side of the auxiliary elastic sheet 21 is fixedly connected to the motor 22, the motor 22 is arc-shaped, the side surface of the auxiliary elastic sheet 21 is fixedly connected to the friction block 32, and a groove 15 is provided on the friction block 32. The groove 15 is wedge-shaped, and the upper end of the elastic sheet 13 extends to the inside of the groove 15;

[0052] The guiding device includes a connecting groove 24, a supporting inclined rod 25, a connecting block 26, an anti-loss piece 27 and a raw material 28.

[0053] In embodiment three, the auxiliary elastic sheet 21 is linked with the friction block 32 to improve dynamic stability. The threaded rod 20 is fixedly connected to the outer side of the auxiliary elastic sheet 21, so that the auxiliary elastic sheet 21 can automatically adapt to different elastic requirements according to the adjustment of the threaded rod 20. The wedge-shaped groove 15 on the friction block 32 is designed to utilize the upper end of the elastic sheet 13 to extend into the groove 15, and the excess vibration force is buffered by the friction damping effect to avoid the vibration disk 23 from having an amplitude that is too large or too small during operation. The motor 22 is designed in an arc shape and fits closely with the auxiliary elastic sheet 21 to ensure that the driving force of the motor 22 is more stable and effective, and reduce the fluctuation of the vibration force.

[0054] Example 4

[0055] like Figure 1-7 As shown, an embodiment of the present invention provides an automated feeding robot arm capable of continuously taking out a vibrating plate, comprising a lower support plate 1, a lateral support frame 2 being fixedly connected to the upper surface of the lower support plate 1, and a connecting bracket 3 being fixedly connected to the upper side of the lateral support frame 2;

[0056] The upper surface of the lower support plate 1 is fixedly connected to a box body 4, a switch 5 is provided on the side surface of the box body 4, and a plurality of adjustment buttons 6 are provided on the box body 4;

[0057] The elastic device 12 is located on the upper side of the lower support plate 1. The elastic device 12 includes an elastic piece 13, a lower support piece 14, an electromagnet housing 8, a second electromagnet 9, an upper support frame 10, a first electromagnet 7 and a spring fixing piece 11;

[0058] Auxiliary elastic device 16, the auxiliary elastic device 16 includes a threaded rod mounting frame 17, a first nut 18, a second nut 19, a threaded rod 20, an auxiliary elastic sheet 21, a motor 22 and a friction block 32;

[0059] The guiding device includes a connecting groove 24, a supporting oblique rod 25, a connecting block 26, an anti-loss piece 27 and a raw material 28. The upper side of the supporting oblique rod 25 is fixedly connected to the connecting block 26, the connecting block 26 is fixedly connected to the anti-loss piece 27, the side surface of the connecting block 26 is fixedly connected to the connecting groove 24, the raw material 28 is located on the upper side of the connecting block 26, and the supporting oblique rod 25 is fixedly connected to the lower support plate 1.

[0060] In the fourth embodiment, the function of the guiding device is further enhanced. The side surface of the connecting block 26 is fixedly connected to the connecting groove 24. The raw material 28 is stably conveyed to the guide groove 31 of the vibrating disk 23 through the structural design of the connecting block 26, so that high-precision material collection is achieved. The design of the anti-loss piece 27 ensures that the raw material 28 will not deviate from the material collection path under high-speed vibration, thereby improving the reliability of the system operation. The supporting diagonal rod 25 is firmly connected to the lower support plate 1, so that the guiding device and the lower support plate 1 form an integrated design, avoiding the influence of the conveying accuracy of the raw material 28 due to loose support.

[0061] Working principle: Through the coordinated work of the lower support plate 1, the elastic device 12, the auxiliary elastic device 16 and the guiding device, the stable operation and continuous material taking function of the vibrating disk 23 are realized. The lower support plate 1 serves as the basic structure of the entire device, and is fixed with a lateral support frame 2 and a connecting bracket 3 to form a stable frame structure. The switch 5 and the adjustment button 6 on the box body 4 are used to control the start and stop of the system and adjust the vibration parameters. The support feet 30 at the bottom enhance the shock resistance and ensure the stability of the structure during operation. The elastic device 12 is composed of an elastic sheet 13, a lower support sheet 14, an electromagnet shell 8, a first electromagnet 7, a second electromagnet 9, an upper support frame 10 and a spring fixing sheet 11. The elastic sheet 13 is fixedly connected to the lower support sheet 14 and the spring fixing sheet 11, and is distributed front and back. When the first electromagnet 7 and the second electromagnet 9 are energized, a magnetic force is generated to drive the elastic sheet 13 to deform periodically, thereby driving the spring fixing sheet 11 and the vibrating disk 23 to vibrate up and down. By adjusting the current intensity of the electromagnet, the vibration force and frequency can be flexibly adjusted to adapt to different principles. The auxiliary elastic device 16 is composed of a threaded rod mounting frame 17, a threaded rod 20, an auxiliary elastic sheet 21, a first nut 18, a second nut 19, a motor 22 and a friction block 32. The threaded rod 20 adjusts the height through the nut to drive the auxiliary elastic sheet 21 to compensate for the elastic change. The motor 22 is designed in an arc shape and cooperates with the auxiliary elastic sheet 21 to dynamically adjust the vibration force. The wedge-shaped groove 15 of the friction block 32 contacts the elastic sheet 13, and the excess vibration force is buffered by the friction damping effect to prevent the vibration amplitude from being too large or too small. The material guide groove 31 of the vibration plate 23 ensures the stable transportation of the raw material 28, and the supporting inclined rod 25, the connecting block 26 and the anti-loss sheet 27 of the guide device ensure the accuracy and stability of the transmission of the raw material 28 through fixed connection to prevent the raw material 28 from falling. The overall elastic device 12 and the auxiliary elastic device 16 cooperate to provide continuous and stable vibration force. Combined with the precise conveying function of the guide device, the efficient operation of the vibration plate 23 is ensured. It is an efficient and stable solution for automated feeding vibration plate 23.

[0062] While embodiments of the present invention 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated feeding robot arm can continuously take out the material vibrating plate, characterized in that: include: A lower support plate (1), wherein the upper surface of the lower support plate (1) is fixedly connected to a lateral support frame (2), and the upper side of the lateral support frame (2) is fixedly connected to a connecting bracket (3); The upper surface of the lower support plate (1) is fixedly connected to a box body (4), a switch (5) is provided on the side surface of the box body (4), and a plurality of adjustment buttons (6) are provided on the box body (4); An elastic device (12) is located on the upper side of the lower support plate (1), the elastic device (12) comprises an elastic sheet (13), a lower support sheet (14), an electromagnet housing (8), a second electromagnet (9), an upper support frame (10), a first electromagnet (7) and a spring fixing sheet (11), the lower support sheet (14) is fixedly connected to the lower support plate (1), the number of the elastic sheets (13) is multiple and distributed front to back, the elastic sheet (13) is fixedly connected to the lower support sheet (14), the upper end of the elastic sheet (13) is fixedly connected to the spring fixing sheet (11), the electromagnet housing (8) is fixedly connected to the lower support plate (1), the first electromagnet (7) is located inside the electromagnet housing (8), the upper side of the second electromagnet (9) is fixedly connected to the upper support frame (10), the side surface of the upper support frame (10) is fixedly connected to the spring fixing sheet (11), and the spring fixing sheet (11) is fixedly connected to the upper end of the elastic sheet (13); An auxiliary elastic device (16), the auxiliary elastic device (16) comprising a threaded rod mounting frame (17), a first nut (18), a second nut (19), a threaded rod (20), an auxiliary elastic sheet (21), a motor (22) and a friction block (32), the threaded rod mounting frame (17) being fixedly connected to the lower support plate (1), the first nut (18) being fixedly connected to the threaded rod (20), the second nut (19) being threadedly connected to the threaded rod (20), the threaded rod (20) being threadedly connected to the threaded rod mounting frame (17), the outer side of the threaded rod (20) being fixedly connected to the auxiliary elastic sheet (21), the upper side of the auxiliary elastic sheet (21) being fixedly connected to the motor (22), the motor (22) being arc-shaped, the side surface of the auxiliary elastic sheet (21) being fixedly connected to the friction block (32), the friction block (32) being provided with a groove (15), the groove (15) being wedge-shaped, and the upper end of the elastic sheet (13) extending into the interior of the groove (15); A guiding device comprises a connecting groove (24), a supporting inclined rod (25), a connecting block (26), an anti-loss sheet (27) and a raw material (28).

2. The automatic feeding robot arm capable of continuously taking out the material vibrating plate according to claim 1 is characterized in that: A button (29) is fixedly connected to the connecting bracket (3), and a plurality of supporting legs (30) are provided on the lower side of the lower support plate (1).

3. The automatic feeding robot arm capable of continuously taking out the material vibrating plate according to claim 1 is characterized in that: A vibration plate (23) is fixedly connected to the upper side of the spring fixing plate (11), and a material guide groove (31) is provided inside the vibration plate (23).

4. The automatic feeding robot arm capable of continuously taking out the material vibrating plate according to claim 1 is characterized in that: The upper side of the supporting oblique rod (25) is fixedly connected to the connecting block (26), the connecting block (26) is fixedly connected to the anti-loss piece (27), the side surface of the connecting block (26) is fixedly connected to the connecting groove (24), the raw material (28) is located on the upper side of the connecting block (26), and the supporting oblique rod (25) is fixedly connected to the lower support plate (1).

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