Floating connection device for a balancing cylinder of a screw press

Abstract

The application relates to a floating connecting device of a balance cylinder of a screw press, and belongs to the field of balance cylinder connecting devices, which comprises a connecting beam arranged at a position corresponding to a balance cylinder of a slider of the screw press, a containing groove horizontally arranged in the connecting beam, and a mounting hole communicated with the containing groove and arranged on the upper surface of the connecting beam; a connecting shaft coaxially arranged with a piston rod of the balance cylinder and connected with the piston rod, the connecting shaft being connected with a sleeve sliding along the axial direction of the connecting shaft, the outer diameter of the sleeve being smaller than the diameter of the mounting hole; a floating block horizontally arranged in the containing groove of the connecting beam, the sleeve being connected with the floating block through the mounting hole, and the floating block being provided with an inner magnet; and an outer magnet arranged in the containing groove, the outer magnet and the inner magnet interacting with each other so that the floating block is not in contact with the inner wall of the connecting beam. The application improves the situation that the piston rod of the balance cylinder is easily subjected to a radial force.

Description

Technical Field

[0001] This application relates to the field of balance cylinder connectors, and in particular to a floating connection device for a balance cylinder of a screw press. Background Technology

[0002] Heavy-duty screw presses mainly consist of a frame, nut, slide block, upper die, screw, and flywheel. During operation, the motor on the frame drives the flywheel and screw to rotate, the screw drives the nut and slide block to move downwards, and the slide block drives the upper die to move towards the workpiece.

[0003] Heavy-duty screw presses have significant weight in components such as the nut, slide block, upper die, and flywheel. To reduce the load on the screw during the return stroke of the slide block and upper die driven by the nut, a load balancing system is often installed on the press frame. This system mainly consists of symmetrically arranged balancing cylinders, often hydraulic cylinders. These cylinders are parallel to the screw and vertically positioned, with the cylinder body fixed to the frame and the piston rod fixed to the slide block. During the return stroke of the screw and slide block, the piston rod retracts, assisting the screw in moving the slide block and other components upwards. This improves the ease and flexibility of the return stroke of the slide block and upper die, reducing wear on the screw and nut, and lowering equipment maintenance costs.

[0004] In the manufacturing process of a screw press with a hydraulic load balancing system, due to the influence of machining errors and tolerances of parts, it is difficult to maintain strict parallelism between the assembled hydraulic cylinder and the screw. Simultaneously, due to tolerances and errors, and for ease of assembly, there is a clearance between the screw and the nut. The nut and the slider need to rely on the vertical guide rails of the frame to limit horizontal displacement, and friction plates are installed on the slider corresponding to the guide rail positions. The reciprocating motion of the slider easily causes wear on the guide rails and friction plates, increasing the clearance between the slider and the guide rails, making the slider's sliding trajectory unstable, and causing the slider to vibrate, displace, and tilt. To reduce the impact of wear on the slider's movement trajectory, technicians may adjust the position of the friction plates or even replace them, which in turn causes the nut to undergo horizontal displacement and tilting within the clearance range.

[0005] The aforementioned conditions can easily cause the slider to jitter, shift horizontally, and tilt, thereby subjecting the piston rod of the hydraulic cylinder to radial force. This can lead to uneven wear on the seals, piston, and piston rod of the hydraulic cylinder, negatively impacting the balanced load function of the hydraulic cylinder and reducing its service life. Summary of the Invention

[0006] To improve the situation where the piston rod of the balance cylinder is susceptible to radial force, this application provides a floating connection device for the balance cylinder of a screw press.

[0007] The floating connection device for the balance cylinder of a screw press provided in this application adopts the following technical solution.

[0008] A floating connection device for the balance cylinder of a screw press includes:

[0009] A connecting beam is set at the position of the balance cylinder corresponding to the slider of the press. A horizontally set receiving groove is opened in the connecting beam, and an installation hole communicating with the receiving groove is opened on the upper surface of the connecting beam.

[0010] A connecting shaft is connected to the piston rod of the balance cylinder and is set on the same axis as the piston rod. The connecting shaft is connected to a sleeve that slides along the axis of the connecting shaft. The outer diameter of the sleeve is smaller than the diameter of the mounting hole.

[0011] A floating block is horizontally positioned in the receiving groove of the connecting beam. A sleeve passes through the mounting hole and is connected to the floating block. The floating block is equipped with an internal magnet.

[0012] An outer magnet is placed in a receiving groove. The outer magnet interacts with the inner magnet, preventing the floating block from contacting the inner wall of the connecting beam.

[0013] By adopting the above scheme, when the balance cylinder is not retracted and raised, the cooperation of the outer and inner magnets prevents the upper and lower sides of the floating block from contacting the connecting beam. Furthermore, because the outer diameter of the sleeve is smaller than the diameter of the mounting hole and the sleeve can slide up and down, the floating block is suspended in the receiving groove, and there is no friction between the floating block and the connecting beam. When the press slide undergoes a certain range of horizontal and / or vertical displacement, the floating block does not deviate from the connecting beam in the horizontal direction, and smoothly rises and falls in the vertical direction with the aid of magnetic force. The balance cylinder and the floating block maintain a vertical axis under the action of gravity. When the piston rod of the balance cylinder retracts, the upper side of the floating block abuts against the inner wall of the receiving groove, and the balance cylinder pulls the slide upward through the floating block and the connecting beam. During this process, the axes of the balance cylinder and the floating block are vertical, and the contact surface between the floating block and the connecting beam is horizontal, improving the situation where the piston rod of the balance cylinder is susceptible to radial forces.

[0014] Preferably, there are two outer magnets and two inner magnets. The two inner magnets are connected to the upper and lower sides of the floating block, and the two outer magnets are located in the receiving groove at the positions above and below the floating block respectively. The outer magnet above the floating block and the adjacent inner magnet have opposite magnetic poles on the side closest to each other, while the outer magnet below the floating block and the adjacent inner magnet have the same magnetic poles on the side closest to each other.

[0015] By adopting the above scheme, two pairs of outer and inner magnets are set up, one above the other. By setting the direction of the magnetic poles, both the outer and inner magnets of the upper and lower sets of the floating block exert a force on the floating block away from the ground. The magnetic force overcomes the effect of gravity, preventing the floating block from contacting the connecting beam. At the same time, compared with the installation scheme where the two sets of magnets have opposite magnetic force directions, the two sets of magnets with the same magnetic force direction reduce the probability that the floating block will be pushed to the side wall of the receiving groove or pulled to the upper or lower wall of the receiving groove by the magnetic force when the floating block and the connecting beam undergo horizontal displacement.

[0016] Preferably, the receiving tank is filled with buoyancy fluid.

[0017] By adopting the above scheme, the buoyancy fluid provides a certain buoyancy and motion resistance to the floating block, reducing the effect of gravity, assisting the external and internal magnets to keep the floating block in a suspended state, and at the same time, using the resistance of fluid movement to reduce the swaying of the floating block, and also slowing down the collision between the upper side of the floating block and the connecting beam.

[0018] Preferably, an elastic membrane is fixedly connected to the corresponding mounting hole positions of the sleeve and the connecting beam, and the elastic membrane seals the mounting hole.

[0019] By adopting the above scheme, when the piston rod of the balance cylinder retracts, the floating block moves upward rapidly and abuts against the connecting beam, the buoyancy fluid is squeezed upward, the elastic membrane provides more space through deformation, reduces the pressure of the buoyancy fluid, consumes the kinetic energy of the buoyancy fluid, and reduces the probability of the buoyancy fluid being ejected from the connecting beam.

[0020] Preferably, the floating block is provided with several counterweights.

[0021] By adopting the above solution, during debugging and maintenance, technicians can flexibly adjust the number and position of the counterweights according to the suspension status of the floating block, so that the floating block is suspended in a suitable position.

[0022] Preferably, a first flange is provided at the end of the connecting shaft near the connecting beam, a second flange is provided at the end of the sleeve away from the connecting beam, and a planar thrust bearing is provided on the side of the connecting shaft corresponding to the first flange and near the second flange.

[0023] By adopting the above scheme, the sliding arrangement of the sleeve and connecting shaft allows the floating block to levitate and rise within a small range according to the displacement of the slider. When the piston rod of the balance cylinder retracts, the two sides of the planar thrust bearing abut against the first flange and the second flange respectively, causing the connecting shaft to pull the sleeve upward. The planar thrust bearing reduces rotational friction between the sleeve and the connecting shaft, facilitating the flexible rotation of the floating block at the lower end of the sleeve. At the same time, the planar thrust bearing can withstand a large axial force, reducing the probability of bearing damage.

[0024] Preferred, including:

[0025] The upper connecting component is located at the end of the balance cylinder away from the ground and is used to connect the balance cylinder to the frame;

[0026] The lower connecting component is located at the end of the balance cylinder near the ground and is used to connect the balance cylinder to the connecting shaft. The upper and lower connecting components enable the balance cylinder to swing with the slider.

[0027] By adopting the above scheme, when the slider undergoes a small range of horizontal displacement and / or tilting, during the retraction of the piston rod of the balance cylinder, the upper connecting assembly and the lower connecting assembly can make the balance cylinder swing with the slider, thereby improving the situation where the piston rod of the balance cylinder is susceptible to radial force.

[0028] Preferably, the upper connection component includes:

[0029] The upper connecting rod is vertically positioned at the connection point between the balance cylinder and the frame.

[0030] The first pin is inserted through the upper connecting rod at the end near the frame, so that the upper connecting rod is hinged to the frame;

[0031] The second pin is inserted through the end of the upper connecting rod away from the frame, so that the upper connecting rod is hinged to the balance cylinder. The axes of the first pin and the second pin are set horizontally, and the axes of the first pin and the second pin are perpendicular to each other.

[0032] By adopting the above scheme, the first and second pins, which are perpendicular and horizontally arranged, allow the end of the balance cylinder away from the ground to rotate flexibly with the position of the slider.

[0033] Preferably, the upper connection component includes:

[0034] The ball head pin is vertically positioned at the end of the balance cylinder near the frame.

[0035] The ball head support is located at the position of the balance cylinder on the frame and is used for hinge connection with the ball head pin.

[0036] By adopting the above scheme, the ball head pin and the ball head support form a ball joint structure, which allows the end of the balance cylinder away from the ground to rotate flexibly with the position of the slider.

[0037] Preferably, the lower connection component includes:

[0038] A connecting seat is connected to a connecting shaft, and the connecting seat has a connecting through hole;

[0039] A stepped shaft is connected to the piston rod of the balance cylinder. The stepped shaft is coaxial with the balance cylinder and passes through the connecting through hole. The diameter of the stepped shaft is smaller than the diameter of the connecting through hole.

[0040] A disc spring is fitted onto the stepped shaft near the connecting seat. In its natural state, the stepped shaft and the connecting through hole are coaxially aligned.

[0041] The bushing is located on the side of the connecting seat away from the balance cylinder. The bushing has an inner hole with a diameter larger than that of the stepped shaft, through which the stepped shaft passes. The side of the bushing away from the balance cylinder is spherically shaped.

[0042] The cover plate is located at the end of the stepped shaft away from the balance cylinder, and a ball groove that can cooperate with the liner is opened on the side of the cover plate near the liner.

[0043] By adopting the above scheme, the spherical fit between the bushing and the cover allows the lower end of the balance cylinder to rotate flexibly with the position of the slider. The disc spring provides a certain resistance to the swing of the stepped shaft and the piston rod, reducing the random swing of the stepped shaft due to inertia and vibration during equipment operation and improving the stability of the balance cylinder's swing.

[0044] In summary, this application has the following beneficial effects:

[0045] 1. The floating block does not deviate from the connecting beam in the horizontal direction, and the floating block rises and falls smoothly in the vertical direction with the help of magnetic force. The axes of the balance cylinder and the floating block are vertical, and the contact surface between the floating block and the connecting beam is horizontal, which improves the situation where the piston rod of the balance cylinder is easily subjected to radial force.

[0046] 2. Compared with two sets of magnetic force directions opposite to each other, two sets of magnets with the same magnetic force direction reduce the probability that the floating block will be pushed to the side wall of the receiving groove or pulled to the upper or lower wall of the receiving groove by the magnetic force when the floating block and the connecting beam are horizontally displaced.

[0047] 3. When the horizontal displacement of the slider is large or it becomes skewed, the upper and lower connecting components can make the balance cylinder swing with the slider, thus improving the situation where the piston rod of the balance cylinder is easily subjected to radial force. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of a screw press in related technologies;

[0049] Figure 2 This is a schematic diagram of the structure of a floating connection device for a balance cylinder of a screw press according to an embodiment of this application;

[0050] Figure 3 This is a cross-sectional view of the protruding connecting beam of a floating connection device for a balance cylinder of a screw press according to an embodiment of this application;

[0051] Figure 4 This is a cross-sectional view of the protruding upper connecting rod of a floating connection device for a balance cylinder of a screw press according to an embodiment of this application;

[0052] Figure 5 This is a schematic diagram of the protruding lower connecting component of a floating connecting device for a balance cylinder of a screw press according to an embodiment of this application;

[0053] Figure 6 This is a cross-sectional view of the protruding ball head pin of a floating connection device for a balance cylinder of a screw press according to an embodiment of this application;

[0054] Figure 7 This is a cross-sectional view of the protruding stepped shaft of a floating connection device for a balance cylinder of a screw press according to an embodiment of this application.

[0055] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Screw; 12. Flywheel; 13. Nut; 14. Slider; 15. Balance cylinder; 2. Upper connecting assembly; 21. Upper connecting rod; 22. First pin; 23. Second pin; 24. Ball head pin; 25. Ball head support; 3. Lower connecting assembly; 31. Lower connecting rod; 32. Stepped shaft; 33. Disc spring; 34. Washer; 35. Cover; 36. Bushing; 37. Inner hole; 38. Universal joint; 4. Connecting seat; 41. Connecting through hole; 5. Connecting beam; 51. Receiving groove; 52. Mounting hole; 53. Outer magnet; 6. Connecting shaft; 61. First flange; 62. Planar thrust bearing; 7. Sleeve; 71. Second flange; 72. Elastic membrane; 8. Floating block; 81. Inner magnet; 82. Buffer pad; 83. Counterweight. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0059] Reference Figure 1In related technologies, a screw press mainly includes a frame 1, a nut 13, a slider 14, a screw 11, and a flywheel 12. The screw 11 is vertically rotatably connected to the frame 1, and the flywheel 12 is fixed to the top of the screw 11. A motor is fixed to the frame 1 near the flywheel 12, and the motor can drive the flywheel 12 to rotate. The nut 13 is threadedly connected to the screw 11, and the slider 14 is slidably connected to the frame 1. The slider 14 is fixed to the nut 13. When the screw 11 rotates, the nut 13 drives the slider 14 to slide vertically.

[0060] Reference Figure 1 and Figure 2 A balance cylinder 15 is provided on both sides of the frame 1 at the position corresponding to the slider 14. The balance cylinder 15 can be a hydraulic cylinder or a pneumatic cylinder. The balance cylinder 15 is parallel to the screw 11 and is set vertically. The cylinder body of the balance cylinder 15 is connected to the frame 1, and the piston rod of the balance cylinder 15 is connected to the slider 14.

[0061] This application discloses a floating connection device for the balance cylinder of a screw press, mainly used to improve the situation where the piston rod of the balance cylinder 15 is easily subjected to radial force. To this end, this application mainly adopts the following approach:

[0062] Reference Figure 3 and Figure 4 A floating connection device for a balance cylinder of a screw press includes two connecting beams 5 fixed to a slider 14, which are horizontally opposite each other on both sides of the slider 14. Each connecting beam 5 has a horizontally arranged receiving groove 51, and a mounting hole 52 is provided on the upper surface of the connecting beam 5 at a position corresponding to the receiving groove 51. The mounting hole 52 communicates with the receiving groove 51, and the receiving groove 51, mounting hole 52, and balance cylinder 15 are arranged coaxially.

[0063] Reference Figure 3 and Figure 4 The piston rod of the balance cylinder 15 is connected to a coaxial connecting shaft 6. A coaxial sleeve 7 is slidably connected to the connecting shaft 6. The sleeve 7 slides along the piston rod axis and passes through a mounting hole 52. The diameter of the sleeve 7 is smaller than the diameter of the mounting hole 52. A horizontally positioned floating block 8 is threaded to the end of the sleeve 7 closest to the ground. The floating block 8 is located in a receiving groove 51. The floating block 8 has an inner magnet 81, and an outer magnet 53 is positioned in the receiving groove 51 corresponding to the inner magnet 81. The outer magnet 53 interacts with the inner magnet 81, and the floating block 8 does not contact the inner wall of the connecting beam 5.

[0064] The following effects are achieved: When the balance cylinder 15 is not retracted and raised, the cooperation of the outer magnet 53 and the inner magnet 81 prevents the upper and lower sides of the floating block 8 from contacting the connecting beam 5. Furthermore, because the outer diameter of the sleeve 7 is smaller than the diameter of the mounting hole 52 and the sleeve 7 can slide up and down, the floating block 8 is suspended in the receiving groove 51, and there is no friction between the floating block 8 and the connecting beam 5. When the slider 14 of the press undergoes a certain range of horizontal and / or vertical displacement, the floating block 8 does not deviate from the connecting beam 5 in the horizontal direction, and the floating block 8 smoothly rises and falls in the vertical direction with the aid of magnetic force. Under the action of gravity, the balance cylinder 15 and the floating block 8 maintain a vertical axis. When the piston rod of the balance cylinder 15 retracts, the upper side of the floating block 8 abuts against the inner wall of the receiving groove 51, and the balance cylinder 15 pulls the slider 14 upward through the floating block 8 and the connecting beam 5. During the above process, the axes of the balance cylinder 15 and the floating block 8 are vertical, and the contact surface between the floating block 8 and the connecting beam 5 is horizontal, improving the situation where the piston rod of the balance cylinder 15 is easily subjected to radial force.

[0065] Reference Figure 3 and Figure 4 As a further example of this embodiment, two outer magnets 53 and two inner magnets 81 are provided. The two inner magnets 81 are fixed to the upper and lower sides of the floating block 8, and the two outer magnets 53 are fixed to the sidewalls of the receiving groove 51 at positions above and below the floating block 8. The outer magnets 53 above the floating block 8 and the adjacent inner magnets 81 have opposite magnetic poles on their respective sides, while the outer magnets 53 below the floating block 8 and the adjacent inner magnets 81 have the same magnetic poles on their respective sides. The outer magnets 53 and the inner magnets 81 can be made of materials such as neodymium magnets. A buffer pad 82 is fixed to the side of the inner magnets 81 that is furthest apart from each other. The buffer pad 82 covers the surface of the inner magnets 81 and can abut against the side of the outer magnets 53 that is closest to the inner magnets 81. The buffer pad 82 reduces the probability of damage to the outer magnets 53 or the inner magnets 81 due to collision.

[0066] The outer magnet 53 and inner magnet 81 are provided in two pairs, one above the other. By setting the direction of the magnetic poles, the outer magnet 53 and inner magnet 81 of the upper and lower sets of the floating block 8 exert a force on the floating block 8 away from the ground. The magnetic force overcomes the effect of gravity and prevents the floating block 8 from contacting the connecting beam 5. At the same time, compared with the installation scheme where the two sets of magnetic forces are opposite, the two sets of magnets with the same magnetic force direction reduce the probability that the floating block 8 will be pushed to the side wall of the receiving groove 51 or pulled to the upper and lower walls of the receiving groove 51 by the magnetic force when the floating block 8 and the connecting beam 5 are horizontally displaced.

[0067] Reference Figure 3 and Figure 4As a further example in this embodiment, the receiving tank 51 is filled with buoyancy fluid, which can be polyvinyl alcohol emulsion or water-based acrylic resin emulsion. An elastic membrane 72 is fixedly connected to the sleeve 7 and the connecting beam 5 at the corresponding mounting holes 52. The elastic membrane 72 seals the mounting holes 52 and can be an elastic rubber membrane or an elastic plastic membrane. The buoyancy fluid provides a certain buoyancy and motion resistance to the floating block 8, reducing the effect of gravity. It assists the outer magnet 53 and the inner magnet 81 in keeping the floating block 8 in a suspended state. Simultaneously, the resistance of fluid movement reduces the swaying of the floating block 8 and also slows down the collision between the upper side of the floating block 8 and the connecting beam 5. When the piston rod of the balance cylinder 15 retracts, the floating block 8 moves rapidly upward and abuts against the connecting beam 5. The buoyancy fluid is squeezed upward, and the elastic membrane 72 provides more space through deformation, reducing the pressure of the buoyancy fluid, consuming the kinetic energy of the buoyancy fluid, and reducing the probability of the buoyancy fluid being ejected from the connecting beam 5.

[0068] Reference Figure 3 and Figure 4 As a further example in this embodiment, the floating block 8 has multiple counterweights 83 threadedly connected to its sidewall, and all counterweights 83 are arranged in an array along the circumferential direction. During debugging and maintenance, technicians can flexibly adjust the number and position of the counterweights 83 according to the levitation status of the floating block 8, so that the floating block 8 is levitated in a suitable position.

[0069] To reduce the friction between the sleeve 7 and the connecting shaft 6, a planar thrust bearing 62 is provided, which is described in detail in another embodiment of this application:

[0070] Reference Figure 3 and Figure 4 A first flange 61 is fixed to the end of the connecting shaft 6 near the connecting beam 5, and a second flange 71 is fixed to the end of the sleeve 7 away from the connecting beam 5. A planar thrust bearing 62 is sleeved on the side of the connecting shaft 6 corresponding to the first flange 61 and near the second flange 71, with both sides of the planar thrust bearing 62 abutting against the first flange 61 and the second flange 71 respectively. The sliding arrangement of the sleeve 7 and the connecting shaft 6 allows the floating block 8 to float and rise within a small range according to the displacement of the slider 14. When the piston rod of the balance cylinder 15 retracts, both sides of the planar thrust bearing 62 abut against the first flange 61 and the second flange 71 respectively, causing the connecting shaft 6 to pull the sleeve 7 upward. The planar thrust bearing 62 reduces the rotational friction between the sleeve 7 and the connecting shaft 6, facilitating the flexible rotation of the floating block 8 at the lower end of the sleeve 7. At the same time, the planar thrust bearing 62 can withstand a large axial force, reducing the probability of bearing damage.

[0071] To allow the balance cylinder 15 to swing with the slider 14, an upper connecting component 2 and a lower connecting component 3 are provided, which will be described in detail in another embodiment of this application:

[0072] Reference Figure 5 and Figure 6 The upper connecting assembly 2 is located at the end of the balance cylinder 15 furthest from the ground and is used to connect the balance cylinder 15 to the frame 1. The lower connecting assembly 3 is located at the end of the balance cylinder 15 closest to the ground and is used to connect the balance cylinder 15 to the connecting shaft 6. The upper connecting assembly 2 and the lower connecting assembly 3 enable the balance cylinder 15 to swing with the slider 14. When the slider 14 undergoes a small range of horizontal displacement and / or tilting, during the retraction of the piston rod of the balance cylinder 15, the upper connecting assembly 2 and the lower connecting assembly 3 enable the balance cylinder 15 to swing with the slider 14, improving the situation where the piston rod of the balance cylinder 15 is susceptible to radial force.

[0073] A further detailed description of an upper connection component 2 is given in another embodiment of this application:

[0074] Reference Figure 4 The upper connecting assembly 2 includes a first pin 22 rotatably connected to the frame 1. A vertically arranged upper connecting rod 21 is rotatably connected to the middle of the first pin 22. A second pin 23 is rotatably connected to the end of the upper connecting rod 21 near the balance cylinder 15. The two ends of the second pin 23 are rotatably connected to the cylinder body of the balance cylinder 15. The axes of the first pin 22 and the second pin 23 are horizontally arranged and perpendicular to each other. The perpendicular and horizontal arrangement of the first pin 22 and the second pin 23 allows the end of the balance cylinder 15 away from the ground to rotate flexibly with the position of the slider 14.

[0075] A further detailed description of an upper connection component 2 is given in another embodiment of this application:

[0076] Reference Figure 6 The upper connecting assembly 2 includes a ball joint support 25 fixedly connected to the frame 1. A vertically arranged ball pin 24 is ball-hinged within the ball joint support 25. The end of the ball pin 24 away from the ball joint support 25 is fixedly connected to the cylinder body of the balance cylinder 15. The ball pin 24 and the balance cylinder 15 are coaxially aligned. The ball pin 24 and the ball joint support 25 form a ball joint structure, allowing the end of the balance cylinder 15 away from the ground to rotate flexibly with the position of the slider 14.

[0077] In another embodiment of this application, a further detailed description of a lower connection component 3 is provided:

[0078] Reference Figure 4 and Figure 7 The lower connecting assembly 3 includes a lower connecting rod 31 fixed to the piston rod of the balance cylinder 15. A stepped shaft 32 is fixed to the end of the lower connecting rod 31 near the ground. The lower connecting rod 31, the stepped shaft 32 and the piston rod are arranged coaxially.

[0079] A connecting seat 4 is fixed to the end of the connecting shaft 6 away from the ground. The connecting seat 4 has a connecting through hole 41. The connecting through hole 41 and the mounting hole 52 are arranged on the same axis. The stepped shaft 32 passes through the connecting through hole 41. The diameter of the stepped shaft 32 is smaller than the diameter of the connecting through hole 41.

[0080] A disc spring 33 is fitted at the position between the lower connecting rod 31 and the connecting seat 4 corresponding to the stepped shaft 32. A washer 34 is fitted at the position between the disc spring 33 and the connecting seat 4 corresponding to the stepped shaft 32. The disc spring 33 abuts against the end of the lower connecting rod 31 near the connecting beam 5 near the center position. The disc spring 33 abuts against the side of the washer 34 near the balance cylinder 15 away from the center position. The side of the washer 34 away from the disc spring 33 abuts against the connecting seat 4. In its natural state, the stepped shaft 32 is coaxial with the connecting through hole 41.

[0081] A bushing 36 is fixedly connected to the side of the connecting seat 4 away from the balance cylinder 15. The bushing 36 has an inner hole 37 with a diameter larger than that of the stepped shaft 32, through which the stepped shaft 32 passes. The side of the bushing 36 away from the balance cylinder 15 is spherically shaped. A cover 35 is fixedly connected to the end of the stepped shaft 32 away from the balance cylinder 15. The side of the cover 35 near the bushing 36 has a spherical groove that can mate with the bushing 36. The side of the cover 35 near the bushing 36 abuts against the side of the bushing 36 away from the balance cylinder 15. The spherical fit between the bushing 36 and the cover 35 allows the lower end of the balance cylinder 15 to rotate flexibly with the position of the slider 14. The disc spring 33 provides a certain resistance to the swing of the stepped shaft 32 and the piston rod, reducing the random swing of the stepped shaft 32 due to inertia and vibration during equipment operation and improving the stability of the swing of the balance cylinder 15.

[0082] In another embodiment of this application, a further detailed description of a lower connection component 3 is provided:

[0083] Reference Figure 5 and Figure 6 The piston rod of the balance cylinder 15 is connected to a universal joint 38. The end of the universal joint 38 away from the balance cylinder 15 is connected to the connecting shaft 6. In its natural state, the universal joint 38 and the balance cylinder 15 are coaxially arranged.

[0084] This application improves the situation where the piston rod of the balance cylinder 15 is susceptible to radial force.

[0085] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0086] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A floating connection of a balancing cylinder of a screw press, characterized in that, include: A connecting beam (5) is set at the position of the slider (14) of the press corresponding to the balance cylinder (15). A horizontally arranged receiving groove (51) is opened in the connecting beam (5), and an installation hole (52) communicating with the receiving groove (51) is opened on the upper surface of the connecting beam (5). A connecting shaft (6) is connected to the piston rod of the balance cylinder (15) and is set on the same axis as the piston rod. The connecting shaft (6) is connected to a sleeve (7) that slides along the axis of the connecting shaft (6). The outer diameter of the sleeve (7) is smaller than the diameter of the mounting hole (52). A floating block (8) is horizontally positioned in the receiving groove (51) of the connecting beam (5). A sleeve (7) passes through the mounting hole (52) and is connected to the floating block (8). The floating block (8) is provided with an inner magnet (81). An outer magnet (53) is placed in a receiving groove (51). The outer magnet (53) interacts with the inner magnet (81) so that the floating block (8) does not contact the inner wall of the connecting beam (5). There are two outer magnets (53) and two inner magnets (81). The two inner magnets (81) are connected to the upper and lower sides of the floating block (8). The two outer magnets (53) are located in the receiving groove (51) above and below the floating block (8). The outer magnets (53) above the floating block (8) and the adjacent inner magnets (81) have opposite magnetic poles on the side closest to each other. The outer magnets (53) below the floating block (8) and the adjacent inner magnets (81) have the same magnetic poles on the side closest to each other. The upper connection component (2) includes: Upper connecting rod (21) is vertically set at the connection position between the balance cylinder (15) and the frame (1); The first pin (22) is inserted through the upper connecting rod (21) at one end near the frame (1), so that the upper connecting rod (21) is hinged to the frame (1); The second pin (23) is inserted through the end of the upper connecting rod (21) away from the frame (1), so that the upper connecting rod (21) is hinged to the balance cylinder (15). The axes of the first pin (22) and the second pin (23) are set horizontally, and the axes of the first pin (22) and the second pin (23) are perpendicular to each other. The ball head pin (24) is vertically set at one end of the balance cylinder (15) near the frame (1); Ball head support (25) is set at the position of the balance cylinder (15) on the frame (1) and is used to hinge with ball head pin (24); The lower connection component (3) includes: A connecting seat (4) is connected to a connecting shaft (6), and the connecting seat (4) has a connecting through hole (41); A stepped shaft (32) is connected to the piston rod of the balance cylinder (15). The stepped shaft (32) is coaxial with the balance cylinder (15). The stepped shaft (32) passes through the connecting through hole (41). The diameter of the stepped shaft (32) is smaller than the diameter of the connecting through hole (41). A disc spring (33) is sleeved on the stepped shaft (32) near the connecting seat (4). In its natural state, the stepped shaft (32) and the connecting through hole (41) are coaxially arranged. A liner (36) is arranged on the side of the connecting base (4) away from the balance cylinder (15), the liner (36) is provided with an inner hole (37) with a diameter larger than that of the stepped shaft (32), the stepped shaft (32) is arranged in the inner hole (37), and the side of the liner (36) away from the balance cylinder (15) is arranged in a spherical surface; A cover tile (35) is arranged on the end of the stepped shaft (32) away from the balance cylinder (15), and the cover tile (35) is provided with a ball groove on the side close to the liner (36), which can cooperate with the liner (36).

2. A floating connection of a balancing cylinder of a screw press according to claim 1, characterized in that: The accommodating groove (51) is filled with a buoyancy liquid.

3. A floating connection of a balancing cylinder of a screw press according to claim 2, characterized in that: The sleeve (7) and the connecting beam (5) are jointly fixed with an elastic film (72) at the position corresponding to the mounting hole (52), and the elastic film (72) seals the mounting hole (52).

4. A floating connection of a balancing cylinder of a screw press according to claim 1, characterized in that: The floating block (8) is provided with a plurality of counterweights (83).

5. A floating connection of a balancing cylinder of a screw press according to claim 1, characterized in that: The connecting shaft (6) is provided with a first flange (61) on the end close to the connecting beam (5), the sleeve (7) is provided with a second flange (71) on the end away from the connecting beam (5), and the connecting shaft (6) is provided with a plane thrust bearing (62) on the side close to the second flange (71) corresponding to the first flange (61).

6. A floating connection of a balancing cylinder of a screw press according to claim 1, characterized in that Comprise: The upper connecting assembly (2) is arranged on the end of the balance cylinder (15) away from the ground, and is used for connecting the balance cylinder (15) and the rack (1); The lower connecting assembly (3) is arranged on the end of the balance cylinder (15) close to the ground, and is used for connecting the balance cylinder (15) and the connecting shaft (6), and the upper connecting assembly (2) and the lower connecting assembly (3) can make the balance cylinder (15) swing with the sliding block (14).

Images