Carrying device of rubber tire production line

Abstract

A carrying device of a rubber tire production line relates to the technical field of tire production and comprises a base and a bearing plate, a sliding L-shaped frame is horizontally and slidably arranged at the top of the base, a lifting plate is vertically arranged at the top of the sliding L-shaped frame in a lifting mode, a separable circular bottom plate is inserted into the top of the lifting plate, and a plurality of containing cylinders are vertically arranged at the top of the circular bottom plate; the outer wall of the containing cylinder and the outer wall of the circular bottom plate are each provided with two rectangular structures, inserting plates are fixedly arranged at the tops of the rectangular structures, positioning grooves and inserting grooves are correspondingly formed in the ends and the bottoms of the rectangular structures, the inserting plates are inserted into the inserting grooves above the inserting plates, two forklift holes are formed in the outer wall of the circular bottom plate in a penetrating mode, and the bearing plate is fixedly connected with the base through four connecting plates. An avoiding hole and a through hole are formed in the top of the bearing plate in a penetrating manner; the ends of the two connecting plates are each provided with a separating assembly for separating the containing cylinder. The tire carrying device solves the problem that when an existing tire carrying device is used, multiple limitations exist in the tire stacking mode.

Description

Technical Field

[0001] This invention relates to the field of tire manufacturing technology, specifically to a material handling device for a rubber tire production line. Background Technology

[0002] At the end of the tire production process, finished tires often need to be transported to designated collection areas for storage. To save space and facilitate subsequent transfers, these tires are usually collected and transported vertically. To achieve efficient flow in this process, dedicated handling equipment is typically used to collect tires from the end of the production line and transfer them to storage locations.

[0003] Patent application CN118239280A discloses a handling device for a tire production line, including a base. Two fixed seats are symmetrically arranged on one side of the base, and a vertical plate is arranged between the two fixed seats. A drive mechanism for driving the vertical plate to rotate is provided on the fixed seats. An L-shaped pad is provided on the top of the base away from the fixed seats. A horizontal plate is fixedly connected to the side wall of the vertical plate. A transfer mechanism for stacking and transferring tires on the production line is provided on the top of the horizontal plate. Through the setting of the transfer mechanism, the tires on the production line can be transferred to the handling device for stacking.

[0004] Existing tire handling devices, including those mentioned above, still have shortcomings in use, mainly in the following aspects: There are several limitations to existing tire stacking methods. Specifically, existing tire handling devices typically stack tires from top to bottom at the end of the production line. However, this method has many limitations. For example, the stacking height is limited by the height of the conveyor line and the height of the tire limiting components. When the stacking height reaches the limit of either of these, the tires cannot be stacked further. Secondly, in the initial stage of dropping tires downwards, there is a risk that the tires may fall freely or impact the tires below, which can easily cause scratches on the finished tires or tilting of the stack. In addition, when picking up the bottom tires, their travel distance must completely cover the length of the limiting components. In summary, existing tire handling devices have many limitations, which affect the overall tire handling process.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a handling device for a rubber tire production line. This device employs a bottom-insertion stacking method, enabling efficient collection and handling of tires on the production line. It not only eliminates limitations on tire stacking height but also ensures that finished tires remain intact during collection and exhibit excellent stacking stability. Furthermore, it significantly reduces the travel distance when retrieving tires, minimizing limitations compared to traditional devices and substantially optimizing the overall tire handling process and effectiveness.

[0007] To address the above problems, the present invention provides the following technical solution: A handling device for a rubber tire production line includes a base and a support plate. A sliding L-shaped frame is horizontally slidable on the top of the base. A lifting plate is vertically lifted on the top of the sliding L-shaped frame. A detachable circular base plate is inserted into the top of the lifting plate. Several receiving cylinders are vertically arranged on the top of the circular base plate. Both the receiving cylinders and the outer wall of the circular base plate have two rectangular structures. An insert plate is fixedly installed on the top of each rectangular structure. Positioning grooves and slots are provided at the ends and bottom of the rectangular structures respectively. The insert plate is inserted into the slot above it. Two forklift holes are provided through the outer wall of the circular base plate. The support plate is fixedly connected to the base through four connecting plates. A clearance hole and a through hole are provided through the top of the support plate. Both of the connecting plates are provided with separation components at their ends to separate the receiving cylinder, the bottom of the bearing plate is provided with a transfer component to transfer the rubber tire, and the top of the bearing plate is provided with a stacking component to stack the rubber tire on both sides of the through hole.

[0008] As an optimized solution, the transfer assembly includes a horizontally sliding U-shaped frame, with two fixed telescopic cylinders fixedly installed on the opposite inner walls of the sliding U-shaped frame. A clamping plate is fixedly connected to the telescopic end of each fixed telescopic cylinder, and one end of the clamping plate has an arc-shaped structure. A vertically sliding arc-shaped baffle is provided through the top of the bearing plate. The outer wall of the container cylinder is provided with four clearance grooves.

[0009] As an optimized solution, a number of push-pull telescopic cylinders are fixedly provided at the bottom of the support plate, and the telescopic ends of the push-pull telescopic cylinders are fixedly connected to the sliding U-shaped frame. A vertical telescopic cylinder is fixedly provided at the top of the support plate, and the telescopic ends of the vertical telescopic cylinders are fixedly connected to the arc-shaped baffle.

[0010] As an optimized solution, the stacking assembly includes a fixed positioning plate, a drive plate that moves horizontally at the end of the positioning plate, and a plurality of sliding rods fixedly provided at the end of the drive plate, with one end of each sliding rod passing through the positioning plate and slidably connected thereto.

[0011] As an optimized solution, a number of horizontal telescopic cylinders are fixedly provided on the top of the bearing plate, and the telescopic ends of the horizontal telescopic cylinders are fixedly connected to the drive plate.

[0012] As an optimized solution, the separation component includes a sliding plate that is slidably connected to the connecting plate, with one end of the sliding plate passing through the connecting plate and fixedly connected to a plurality of insert rods.

[0013] As an optimized solution, a plurality of control telescopic cylinders are fixedly provided at the end of the connecting plate, and the telescopic ends of the control telescopic cylinders are fixedly connected to the sliding plate.

[0014] As an optimized solution, casters are provided at the four corners of the base.

[0015] As an optimized solution, a limiting plate is fixedly provided on the top of the lifting plate, and a limiting groove is provided on the bottom of the circular base plate. The limiting groove and the limiting plate are set in the same shape.

[0016] As an optimized solution, a drive telescopic cylinder is fixedly provided on the top of the base, and the telescopic end of the drive telescopic cylinder is fixedly connected to the sliding L-shaped frame. Several lifting telescopic cylinders are fixedly provided on the top of the sliding L-shaped frame, and the telescopic end of the lifting telescopic cylinder is fixedly connected to the support plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The lifting plate moves upward above the support plate, inserts the circular base plate into the top of the lifting plate, and then inserts the corresponding number of receiving cylinders into the top of the circular base plate in sequence. After the lifting plate moves downward to a preset height, the sliding plate slides to allow the insert rod to be inserted into the positioning groove of the bottom receiving cylinder, limiting the position of all receiving cylinders. After the preparation is completed, push the device to the end of the conveyor line, the lifting plate moves upward so that the circular base plate is inserted and abuts against the bottom receiving cylinder, the insert rod is pulled out to release the limit, the lifting plate moves down one receiving cylinder height, the insert rod is inserted into the positioning groove of the second receiving cylinder to limit the position of the remaining receiving cylinders, the lifting plate continues to move down to remove the bottom receiving cylinder (e.g. Figure 8 As shown), the sliding L-shaped frame slides horizontally a preset distance and waits. When the receiving cylinder separates, the arc-shaped baffle blocks the rubber tire on the conveyor line. The sliding U-shaped frame slides horizontally until the rubber tire is inside it. The four clamping plates move to abut against the tire and clamp it. The arc-shaped baffle moves up to avoid (as shown). Figure 9 As shown), the sliding U-shaped frame clamps the tire back to its original position, the lifting plate moves the receiving cylinder upwards until the tire is fully inserted, and the clamping plate resets to release the restriction (as shown). Figure 10 As shown), the lifting plate moves the receiving cylinder upward through the through hole, and the sliding rod is inserted into the positioning groove to limit the position of the receiving cylinder (as shown). Figure 11As shown), during subsequent tire stacking, the lifting plate moves the loaded receiving cylinder upwards, passing through the through hole and inserting into and abutting against the upper limiting receiving cylinder. The sliding rod is then pulled out, and the lifting plate pushes all the receiving cylinders upwards by one receiving cylinder height. The sliding rod is inserted into the positioning groove of the bottom receiving cylinder. This process is repeated until the last loaded receiving cylinder is pushed to abut against the upper limiting receiving cylinder. Then, the sliding rod is pulled out, and the lifting plate moves upwards, causing the circular base plate to pass through the through hole. The sliding rod is inserted into the positioning groove of the circular base plate, completing tire collection (as shown). Figure 12 As shown, the device is moved to the storage area, and a forklift is used to place the circular base plate and the tires stacked on top of it in the designated position. The rubber tires are placed in the container for stacking, which can prevent the finished tires from being damaged by impact or compression. The insertion plate and slot structure can make the stacking of the container more stable, and when picking up the tires, the movement path only needs to be greater than the height of the insertion plate. The device adopts the bottom insertion stacking method, which realizes the efficient collection and handling of tires on the production line. It not only makes the tire stacking height unlimited, but also ensures that the finished tires are intact and the stacking stability is excellent during the collection process. At the same time, the movement distance when picking up the tires is greatly reduced. Compared with traditional devices, it has very few limitations and significantly optimizes the overall process and effect of tire handling. 2. The device can also realize the function of installing multiple containers at one time and then using them individually. During the preparation process, the corresponding number of containers are placed in place at one time, and they can be used individually when stacking tires later, which improves the practicality of the device. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the top of the base of the present invention; Figure 3 This is a schematic diagram of the structure of the receiving cylinder and the top of the circular base plate of the present invention; Figure 4 This is a schematic diagram of the structure of the receiving cylinder and the bottom of the circular base plate of the present invention; Figure 5 This is a schematic diagram of the stacked component and the separated component of the present invention; Figure 6 This is a schematic diagram of the structure of the transfer component of the present invention; Figure 7 This is a schematic diagram of the sliding U-shaped frame of the present invention; Figure 8 This is a schematic diagram of the separation of the container cylinder according to the present invention; Figure 9 This is a schematic diagram of the present invention when clamping the rubber tire of the conveyor line; Figure 10 This is a schematic diagram of the rubber tire of the present invention being inserted into the receiving cylinder; Figure 11 This is a schematic diagram of the container cylinder being limited in position according to the present invention; Figure 12 This is a schematic diagram of the rubber tires of the present invention being stacked.

[0020] In the diagram: 1-Base; 2-Connecting plate; 3-Bearing plate; 4-Cast wheel; 5-Sliding L-shaped frame; 6-Receiving cylinder; 7-Circular base plate; 8-Lifting plate; 9-Drive telescopic cylinder; 10-Lifting telescopic cylinder; 11-Forklift hole; 12-Positioning slot; 13-Rectangular structure; 14-Insertion plate; 15-Allowing slot; 16-Slot; 17-Limiting slot; 18-Limiting plate; 19-Insertion rod; 20-Separation assembly; 21-Allowing hole; 22-Horizontal telescopic cylinder; 23-Drive plate; 24-Stacking assembly; 25-Positioning plate; 26-Sliding rod; 27-Through hole; 28-Vertical telescopic cylinder; 29-Sliding plate; 30-Control telescopic cylinder; 31-Sliding U-shaped frame; 32-Transfer assembly; 33-Push-pull telescopic cylinder; 34-Clamping plate; 35-Fixed telescopic cylinder; 36-Arc-shaped baffle; 37-Rubber tire; 38-Conveyor line. Detailed Implementation

[0021] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0022] like Figures 1 to 12 As shown, a conveying device for a rubber tire production line includes a base 1 and a support plate 3. A sliding L-shaped frame 5 is horizontally slidably mounted on the top of the base 1. A lifting plate 8 is vertically lifted and lowered on the top of the sliding L-shaped frame 5. A detachable circular base plate 7 is inserted into the top of the lifting plate 8. Several receiving cylinders 6 are vertically arranged on the top of the circular base plate 7. Two rectangular structures 13 are provided on the outer walls of both the receiving cylinders 6 and the circular base plate 7. An insert plate 14 is fixedly mounted on the top of the rectangular structure 13. Positioning grooves 12 and slots 16 are provided at the ends and bottom of the rectangular structure 13 respectively. The insert plate 14 is inserted into the slot 16 above it. Two forklift holes 11 are provided through the outer wall of the circular base plate 7. The support plate 3 is fixedly connected to the base 1 through four connecting plates 2. An avoidance hole 21 and a through hole 27 are provided through the top of the support plate 3. Both ends of the two connecting plates 2 are provided with separation components 20 for separating the receiving cylinder 6, the bottom of the bearing plate 3 is provided with a transfer component 32 for transferring the rubber tire 37, and the top of the bearing plate 3 is provided with a stacking component 24 for stacking the rubber tire 37 on both sides of the through hole 27.

[0023] The transfer assembly 32 includes a horizontally sliding U-shaped frame 31. Two fixed telescopic cylinders 35 are fixedly provided on the inner walls of the sliding U-shaped frame 31. A clamping plate 34 is fixedly connected to the telescopic end of the fixed telescopic cylinder 35. One end of the clamping plate 34 is an arc-shaped structure. A vertically sliding arc-shaped baffle 36 is provided through the top of the bearing plate 3. The outer wall of the container cylinder 6 is provided with four clearance grooves 15.

[0024] A number of push-pull telescopic cylinders 33 are fixedly provided at the bottom of the bearing plate 3. The telescopic ends of the push-pull telescopic cylinders 33 are fixedly connected to the sliding U-shaped frame 31. A vertical telescopic cylinder 28 is fixedly provided at the top of the bearing plate 3. The telescopic ends of the vertical telescopic cylinder 28 are fixedly connected to the arc-shaped baffle 36.

[0025] The stacking assembly 24 includes a fixedly installed positioning plate 25. A drive plate 23 is horizontally movable at the end of the positioning plate 25. A plurality of sliding rods 26 are fixedly installed at the end of the drive plate 23. One end of each sliding rod 26 passes through the positioning plate 25 and is slidably connected to it.

[0026] Several horizontal telescopic cylinders 22 are fixedly installed on the top of the bearing plate 3, and the telescopic ends of the horizontal telescopic cylinders 22 are fixedly connected to the drive plate 23.

[0027] The separation component 20 includes a sliding plate 29 that is slidably connected to the connecting plate 2. One end of the sliding plate 29 passes through the connecting plate 2 and is fixedly connected with a number of insert rods 19.

[0028] Several control telescopic cylinders 30 are fixedly provided at the end of the connecting plate 2, and the telescopic end of the control telescopic cylinder 30 is fixedly connected to the sliding plate 29.

[0029] The base 1 is equipped with casters 4 at the four corners.

[0030] A limiting plate 18 is fixedly provided on the top of the lifting plate 8, and a limiting groove 17 is provided on the bottom of the circular base plate 7. The limiting groove 17 and the limiting plate 18 are set in the same shape.

[0031] A drive telescopic cylinder 9 is fixedly installed on the top of the base 1. The telescopic end of the drive telescopic cylinder 9 is fixedly connected to the sliding L-shaped frame 5. Several lifting telescopic cylinders 10 are fixedly installed on the top of the sliding L-shaped frame 5. The telescopic end of the lifting telescopic cylinder 10 is fixedly connected to the lifting plate 8.

[0032] The working principle of this device is as follows: The lifting plate 8 moves upward above the bearing plate 3, and the circular base plate 7 is inserted into the top of the lifting plate 8. Then, the corresponding number of receiving cylinders 6 are inserted into the top of the circular base plate 7 in sequence. After the lifting plate 8 moves downward to a preset height, the sliding plate 29 slides to allow the insertion rod 19 to be inserted into the positioning groove 12 of the lowest receiving cylinder 6, limiting the position of all receiving cylinders 6. After the preparation is completed, the device is pushed to the end of the conveyor line 38. The lifting plate 8 moves upward so that the circular base plate 7 is inserted into and abuts against the lowest receiving cylinder 6. The insertion rod 19 is pulled out to release the limitation. The lifting plate 8 moves downward by the height of one receiving cylinder 6. The insertion rod 19 is inserted into the positioning groove 12 of the second receiving cylinder 6 to limit the position of the remaining receiving cylinders 6. The lifting plate 8 continues to move downward to remove the lowest receiving cylinder 6 (e.g., Figure 8 As shown), the sliding L-shaped frame 5 slides horizontally a preset distance and waits. When the receiving cylinder 6 is separated, the arc-shaped baffle 36 blocks the rubber tire 37 on the conveyor line 38. The sliding U-shaped frame 31 slides horizontally until the rubber tire 37 is inside it. The four clamping plates 34 move to abut against the tire to clamp it. The arc-shaped baffle 36 moves upward to avoid (as shown). Figure 9 As shown), the sliding U-shaped frame 31 clamps the tire back to its original position, the lifting plate 8 moves the receiving cylinder 6 upward until the tire is fully inserted, and the clamping plate 34 resets to release the restriction (as shown). Figure 10 As shown), the lifting plate 8 moves the receiving cylinder 6 upward through the through hole 27, and the sliding rod 26 is inserted into the positioning groove 12 to limit the position of the receiving cylinder 6 (as shown). Figure 11 As shown), during subsequent tire stacking, the lifting plate 8 moves the loaded receiving cylinder 6 upwards, passing through the through hole 27 and inserting it into the upper limiting receiving cylinder 6, abutting against it. The sliding rod 26 is then pulled out, and the lifting plate 8 pushes all the receiving cylinders 6 upwards by one receiving cylinder 6 height. The sliding rod 26 is then inserted into the positioning groove 12 of the lowest receiving cylinder 6. This process is repeated until the last loaded receiving cylinder 6 is pushed to abut against the upper limiting receiving cylinder 6. Then, the sliding rod 26 is pulled out, and the lifting plate 8 moves upwards, causing the circular base plate 7 to pass through the through hole 27. The sliding rod 26 is then inserted into the positioning groove 12 of the circular base plate 7, completing tire collection (as shown). Figure 12 As shown), the device is moved to the storage area, and a forklift is used to place the circular base plate 7 and the tires stacked on top of it in the designated position. The rubber tires 37 are placed in the receiving cylinder 6 for stacking, which can prevent the finished tires from being damaged by impact or compression. The structure of the insert plate 14 and slot 16 can make the stacking of the receiving cylinder 6 more stable. When picking up the tires, the movement path only needs to be greater than the height of the insert plate 14. The device adopts the bottom insertion stacking method, which realizes the efficient collection and handling of tires on the production line. It not only makes the tire stacking height unlimited, but also ensures that the finished tires are intact and the stacking stability is excellent during the collection process. At the same time, the movement distance when picking up the tires is greatly reduced. Compared with traditional devices, it has very few limitations and significantly optimizes the overall process and effect of tire handling. The device can also realize the function of installing multiple container cylinders 6 at one time and then separating them individually for use. During the preparation process, the corresponding number of container cylinders 6 are placed in place at one time, and they can be separated individually for use when stacking tires later, which improves the practicality of the device.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A conveying device for a rubber tire production line, characterized in that: The system includes a base (1) and a support plate (3). The base (1) has a horizontally sliding L-shaped frame (5) on its top. The sliding L-shaped frame (5) has a vertically lifting support plate (8) on its top. The support plate (8) has a separable circular base plate (7) inserted into its top. The circular base plate (7) has several vertically arranged receiving cylinders (6) on its top. The outer walls of the receiving cylinders (6) and the circular base plate (7) are provided with two rectangular structures (13). The top of the rectangular structures (13) is fixedly provided with insert plates (14). The ends and bottoms of the rectangular structures (13) are provided with positioning grooves (12) and slots (16) respectively. The insert plates (14) are inserted into the slots (16) above them. The outer wall of the circular base plate (7) is provided with two forklift holes (11). The support plate (3) is fixedly connected to the base (1) through four connecting plates (2). The top of the support plate (3) is provided with clearance holes (21) and through holes (27). Both of the connecting plates (2) are provided with a separation component (20) for separating the receiving cylinder (6) at their ends. The bottom of the bearing plate (3) is provided with a transfer component (32) for transferring the rubber tire (37). The top of the bearing plate (3) is provided with a stacking component (24) for stacking the rubber tire (37) on both sides of the through hole (27).

2. The conveying device for a rubber tire production line according to claim 1, characterized in that: The transfer assembly (32) includes a horizontally sliding U-shaped frame (31), and two fixed telescopic cylinders (35) are fixedly provided on the opposite inner walls of the sliding U-shaped frame (31). The telescopic end of the fixed telescopic cylinder (35) is fixedly connected to a clamping plate (34). One end of the clamping plate (34) is an arc-shaped structure. The top of the bearing plate (3) is provided with a vertically sliding arc-shaped baffle (36). The outer wall of the container (6) is provided with four clearance grooves (15).

3. The conveying device for a rubber tire production line according to claim 2, characterized in that: The bottom of the bearing plate (3) is fixedly provided with several push-pull telescopic cylinders (33), the telescopic end of the push-pull telescopic cylinder (33) is fixedly connected to the sliding U-shaped frame (31), and the top of the bearing plate (3) is fixedly provided with a vertical telescopic cylinder (28), the telescopic end of the vertical telescopic cylinder (28) is fixedly connected to the arc-shaped baffle (36).

4. The conveying device for a rubber tire production line according to claim 2, characterized in that: The stacking assembly (24) includes a fixed positioning plate (25), and a drive plate (23) is provided at the end of the positioning plate (25) for horizontal movement. A plurality of sliding rods (26) are fixed at the end of the drive plate (23), and one end of the sliding rod (26) passes through the positioning plate (25) and is slidably connected to it.

5. A conveying device for a rubber tire production line according to claim 4, characterized in that: The top of the bearing plate (3) is fixedly provided with several horizontal telescopic cylinders (22), and the telescopic ends of the horizontal telescopic cylinders (22) are fixedly connected to the drive plate (23).

6. The conveying device for a rubber tire production line according to claim 1, characterized in that: The separation component (20) includes a sliding plate (29) that is slidably connected to the connecting plate (2). One end of the sliding plate (29) passes through the connecting plate (2) and is fixedly connected with a number of insert rods (19).

7. A conveying device for a rubber tire production line according to claim 6, characterized in that: The end of the connecting plate (2) is fixedly provided with a plurality of control telescopic cylinders (30), and the telescopic end of the control telescopic cylinders (30) is fixedly connected to the sliding plate (29).

8. The conveying device for a rubber tire production line according to claim 1, characterized in that: The base (1) is equipped with casters (4) at the four corners of its bottom.

9. A conveying device for a rubber tire production line according to claim 1, characterized in that: The top of the lifting plate (8) is fixedly provided with a limiting plate (18), and the bottom of the circular base plate (7) is provided with a limiting groove (17). The limiting groove (17) and the limiting plate (18) are arranged in a conformal manner.

10. A conveying device for a rubber tire production line according to claim 1, characterized in that: The base (1) is fixedly provided with a drive telescopic cylinder (9) at the top. The telescopic end of the drive telescopic cylinder (9) is fixedly connected to the sliding L-shaped frame (5). The sliding L-shaped frame (5) is fixedly provided with a number of lifting telescopic cylinders (10) at the top. The telescopic end of the lifting telescopic cylinder (10) is fixedly connected to the lifting plate (8).

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