Balancing cylinder bushing replacement device

Abstract

The utility model relates to a kind of balanced cylinder shaft sleeve replacement device, device includes first drive mechanism, second drive mechanism, first drive mechanism includes support, first driving part, support is used to be connected with balanced cylinder, support has accommodating space, first driving part is located in accommodating space, the main part of first driving part is connected with support, the driving part of first driving part can from balanced cylinder another end open into balanced cylinder to drive the connecting shaft in balanced cylinder along its axial movement;Second drive mechanism is connected with the sleeve of balanced cylinder inner shaft and is used to drive sleeve movement.The balanced cylinder shaft sleeve replacement device provided by the utility model can not only safely and stably eject the connecting shaft inside balanced cylinder, but also make the sleeve in a relaxed state, better, faster and more easily replace the sleeve;It can prevent screw bending and slipping and jumping out of harm problem;Replacement device is safe and reliable, firm and durable;It improves work efficiency and reduces labor maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of balanced cylinder shaft sleeve replacement device. BACKGROUND

[0002] Chemical fiber polyester industry gradually changes from labor-intensive to modern manufacturing, from high consumption, high pollution to energy saving and consumption reduction. Therefore, a large number of logistics complete equipment and system are used, which is the inevitable choice of enterprises in this industry. The use of automatic conveying line of chemical fiber enterprises can save a lot of labor and solve the problem of labor shortage, and improve work efficiency.

[0003] The automatic workshop ABB robot comprises a balance cylinder and a mechanical arm. A connecting shaft is arranged in the balance cylinder. One end of the connecting shaft is provided with a crank. The crank is located outside one end of the balance cylinder. A shaft sleeve is arranged in the crank. The connecting shaft is perpendicular to the shaft sleeve. The crank is rotatably connected to the mechanical arm. The shaft sleeve is arranged in the mechanical arm.

[0004] However, during the operation of the automatic workshop ABB robot, the shaft sleeve is worn out due to long-term use of the robot. When the wear reaches the limit, the balance cylinder shaft sleeve needs to be replaced for reuse. The balance cylinder is a balancing device arranged between the base of the robot and the mechanical arm. When the mechanical arm operates, the balance cylinder balances the torque of the gravitational force on the robot 2 shaft, so that the robot moves more stably.

[0005] When replacing the balance cylinder shaft sleeve, the connecting shaft of the balance cylinder is ejected to make the balance cylinder shaft sleeve relax. After the balance cylinder shaft sleeve is in a relaxed state, the next step of disassembling the shaft sleeve is performed. There is a large pressure in the cylinder body. The original tool: four screw rods are used to top the connecting shaft inside the balance cylinder to achieve the relaxation effect. The screw is easy to bend and slip, which takes a long time and bounces out the screw rod. The cylinder body hits back to the original position, which has a great safety hazard during operation. Improper use can easily break and injure the maintenance personnel. After the cylinder body is ejected, it is difficult to control the stress of the screw rod, which makes it difficult to disassemble the shaft sleeve. It needs to be adjusted constantly. It takes 6 hours to complete the maintenance, and 4 people are needed. It is time-consuming and labor-intensive. It is not suitable to eject the balance cylinder to make the shaft sleeve relax. The disturbing factors are the large pressure in the cylinder body, the insufficient hardness of the screw rod, the bending, the rebound, etc. Utility model content

[0006] The utility model aims at providing a kind of balanced cylinder shaft sleeve replacement device to replace shaft sleeve quickly and safely.

[0007] To achieve the above purpose, the utility model adopts the technical scheme that:

[0008] The utility model provides a balanced cylinder axle sleeve replacement device, the balanced cylinder is provided with connecting shaft, one end of connecting shaft is provided with crank, the crank is located the one end outside of balanced cylinder, the crank is provided with axle sleeve, connecting shaft is perpendicular with axle sleeve, the device includes first drive mechanism, second drive mechanism, first drive mechanism includes support, first drive piece, the support is used for connecting with the other end of balanced cylinder, the support has accommodating space, the other end of balanced cylinder is open through with accommodating space, the first drive piece is located in the accommodating space, the main part of first drive piece is connected with the support, the drive part of first drive piece can enter the balanced cylinder from the other end of balanced cylinder to drive the connecting shaft in the balanced cylinder moves along its axial direction,

[0009] Second drive mechanism is connected with the axle sleeve in the balanced cylinder for driving the axle sleeve moves.

[0010] According to some embodiments of the utility model, the second drive mechanism includes a lead screw, a blocking nut, and an impact block. The lead screw is externally provided with external threads that match the internal threaded hole of the axle sleeve. The blocking nut is arranged on the lead screw. The impact block is slidingly arranged on the lead screw.

[0011] According to some embodiments of the utility model, the device further includes a fixing member. The fixing member is arranged on the lead screw. The fixing member is located between the blocking nut and the impact block. The fixing member abuts against the blocking nut. The surface area of the fixing member is greater than that of the blocking nut.

[0012] According to some embodiments of the utility model, the cross section of the fixing member is circular.

[0013] According to some embodiments of the utility model, the support includes a bottom surface, a top surface, and an annular side surface. The annular side surface is arranged between the bottom surface and the top surface. The annular side surface is connected to and perpendicular to the bottom surface and the top surface. An open hole is formed in the bottom surface and the annular side surface. The open hole is in communication with the accommodating space.

[0014] According to some embodiments of the utility model, the annular side surface is in the shape of a circular arc.

[0015] According to some embodiments of the utility model, the annular side surface includes a first side surface, a second side surface, and a third side surface. The first side surface is arranged opposite to the third side surface. The first side surface and the third side surface are both connected to the same side of the second side surface.

[0016] According to some embodiments of the utility model, the bottom surface of the support and the other end of the balance cylinder are provided with corresponding mounting holes, and the support and the balance cylinder are fixedly connected by setting fasteners in the mounting holes.

[0017] According to some embodiments of the utility model, the driving part of the first driving part is provided with a driving block away from one end of the main part.

[0018] According to some embodiments of the utility model, the first driving part is a cylinder, a hydraulic cylinder or a motor.

[0019] Due to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0020] The balance cylinder shaft sleeve replacement device provided by the utility model drives the connecting shaft to move through the first driving part of the first driving mechanism, the stress is more uniform, the second driving mechanism is further operated, the balance cylinder internal connecting shaft can be safely and stably ejected, and the balance cylinder shaft sleeve can be in a relaxed state, so that the difficulty of replacing the balance cylinder shaft sleeve is solved, the screw bending, sliding and ejection injury problems can be eliminated, the replacement device is safe and reliable, firm and durable, the work efficiency is improved, and the manpower maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] ATTACHED Figure 1 It is a first perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model.

[0022] ATTACHED Figure 2 It is a second perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model.

[0023] ATTACHED Figure 3 It is a third perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model (without impact block).

[0024] ATTACHED Figure 4 It is a fourth perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model (without impact block).

[0025] ATTACHED Figure 5 It is a fifth perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model (without mechanical arm).

[0026] ATTACHED Figure 6 It is a sixth perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model (without mechanical arm).

[0027] ATTACHED Figure 7 It is a seventh perspective view of the structure of the balance cylinder shaft sleeve replacement device provided by the utility model (without mechanical arm).

[0028] ATTACHEDFigure 8 A first-view structural diagram of a support component for a balance cylinder bushing replacement device provided by this utility model.

[0029] Appendix Figure 9 A second-view structural diagram of a support component for a balance cylinder bushing replacement device provided by this utility model;

[0030] Appendix Figure 10 A first-view structural diagram of another structure of the support component for the balance cylinder bushing replacement device provided by this utility model;

[0031] Appendix Figure 11 A second-view structural diagram of another structure of the support component for the balance cylinder bushing replacement device provided by this utility model;

[0032] Appendix Figure 12 A half-sectional view from the first perspective of the balance cylinder bushing replacement device provided by this utility model.

[0033] Appendix Figure 13 A half-sectional view from a second perspective of the balance cylinder bushing replacement device provided by this utility model;

[0034] Appendix Figure 14 A third-view half-sectional view of the balance cylinder bushing replacement device provided by this utility model;

[0035] Appendix Figure 15 This is a structural diagram of the second drive mechanism of the balance cylinder bushing replacement device provided by this utility model.

[0036] In the attached diagrams above:

[0037] 1-Support component, 11-Bottom surface, 12-Top surface, 13-Annular side surface, 131-First side surface, 132-Second side surface, 133-Third side surface;

[0038] 2-First driving component, 21-Main body, 22-Driving part, 23-Driving block;

[0039] 3-Screw; 4-Blocking nut; 5-Impact block; 6-Fastener; 7-Balance cylinder; 8-Fixed part; 9-Connecting shaft; 10-Crank; 15-Shaft sleeve; 16-Mechanical arm. Detailed Implementation

[0040] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] The balance cylinder 7 has opposite two ends, and the opposite two ends are provided with end covers. The balance cylinder 7 is opened at one end by removing the end cover. A connecting shaft 9 is arranged in the balance cylinder 7. A crank 10 is arranged at one end of the connecting shaft 9. The crank 10 is located outside one end of the balance cylinder 7. A shaft sleeve 15 is embedded in the crank 10. An internal thread hole is formed in the shaft sleeve 15. The connecting shaft 9 is perpendicular to the shaft sleeve 15.

[0043] Referring to Figures 1 to 15 The balance cylinder shaft sleeve replacement device includes a first driving mechanism and a second driving mechanism. The first driving mechanism and the second driving mechanism are independent of each other. The first driving mechanism includes a support piece 1 and a first driving piece 2. The support piece 1 is used to be connected to the other end of the balance cylinder 7. The support piece 1 has an accommodation space. In the working state, the other end of the balance cylinder 7 is open. The accommodation space is through the balance cylinder 7. The first driving piece 2 is located in the accommodation space. The main body part 21 of the first driving piece 2 is connected to the support piece 1. The driving part 22 of the first driving piece 2 can enter the balance cylinder 7 from the accommodation space to drive the connecting shaft 9 in the balance cylinder 7 to move along the axial direction away from the other end of the balance cylinder 7, so that the connecting shaft 9 is loosened. The second driving mechanism is connected to the shaft sleeve 15 in the balance cylinder 7 and is used to drive the shaft sleeve 15 to move along the axial direction. When the connecting shaft 9 is pushed to move and drives the crank 10 to move a distance (less than 1 centimeter), the shaft sleeve 15 is loosened relative to the mechanical arm 16. Then, the shaft sleeve 15 is detached from the crank 10 by the second driving mechanism, so that the shaft sleeve 15 is separated from the crank 10. The shaft sleeve 15 is more easily detached.

[0044] In some embodiments, the support piece 1 includes a bottom surface 11, a top surface 12 and an annular side surface 13. The annular side surface 13 is arranged between the bottom surface 11 and the top surface 12. The annular side surface 13 is connected to the top surface 12 and the bottom surface 11. The annular side surface 13 is perpendicular to the top surface 12 and the bottom surface 11. The top surface 12 and the annular side surface 13 form an accommodation space with the bottom surface 11. An open hole is formed in the annular side surface 13. The open hole is through the accommodation space, which facilitates the installation of the first driving piece 2. An opening is formed in the bottom surface 11. The opening is through the accommodation space, which facilitates the driving part 22 of the first driving piece 2 to enter the balance cylinder 7 from the accommodation space to drive the connecting shaft 9 in the balance cylinder 7 to move along the axial direction.

[0045] Referring to Figures 8-9 The annular side surface 13 is in the shape of a circular arc, that is, the top surface 12 and the annular side surface 13 form a cylindrical shape.

[0046] In some embodiments, the annular side surface 13 comprises a first side surface 131, a second side surface 132 and a third side surface 133, the first side surface 131 is arranged opposite to the third side surface 133, and the first side surface 131 and the third side surface 133 are both connected to the same side of the second side surface 132, the first side surface 131, the third side surface 133 and the second side surface 132 are all perpendicular, and the support 1 is in the shape of a square. The side opposite to the first side surface 131 is open, which facilitates the installation and removal of the first driving member 2.

[0047] In some embodiments, the area of the bottom surface 11 of the support 1 is greater than the area of the top surface 12, which facilitates the stable connection with the other end of the balance cylinder 7; the bottom surface 11 of the support 1 and the other end of the balance cylinder 7 are both provided with corresponding mounting holes, and the support 1 and the other end of the balance cylinder 7 are fixedly connected through the fastener 6 arranged in the mounting holes, the fastener 6 is preferably a bolt and nut assembly, and through the arrangement of the mounting holes and the fastener 6, the support 1 and the balance cylinder 7 are connected and the first driving mechanism is easily removed.

[0048] In some embodiments, the driving block 23 in the shape of a cylinder is arranged at the end of the driving part 22 of the first driving member 2 away from the main body part 21, which can better push the connecting shaft 9 to move along the axial direction, and when the driving block 23 is damaged, only the driving block 23 can be replaced, thereby saving cost.

[0049] In some embodiments, the first driving member 2 is a gas cylinder, a motor or a hydraulic cylinder, and if it is a gas cylinder, the main body part 21 of the first driving member 2 is a cylinder body and the driving part 22 is a piston rod.

[0050] The inner threaded hole is arranged in the shaft sleeve 15, and an inner thread is arranged in the inner threaded hole, referring to Figure 15 The second driving mechanism comprises a lead screw 3, a blocking nut 4 and an impact block 5, the lead screw 3 is provided with an outer thread matched with the inner threaded hole of the shaft sleeve 15, the blocking nut 4 is arranged on the lead screw 3, and the impact block 5 is slidingly arranged on the lead screw 3, and the impact block 5 is closer to the end of the lead screw 3 matched with the inner threaded hole of the shaft sleeve 15 than the blocking nut 4. When the second driving mechanism works, the lead screw 3 is threadedly connected with the inner threaded hole of the shaft sleeve 15, the impact block 5 is then operated to hit the blocking nut 4, so that the lead screw 3 moves away from the mechanical arm 16, thereby driving the shaft sleeve 15 to move and be separated from the crank 10, and finally the shaft sleeve 15 is removed.

[0051] In some preferred embodiments, the device further comprises a fixing member 8 arranged on the lead screw 3, the fixing member 8 being located between the blocking nut 4 and the impact block 5, the fixing member 8 abutting against the blocking nut 4, and the surface area of the fixing member 8 (the surface of the fixing member 8 opposite to the impact block 5) being larger than the surface area of the blocking nut 4, so that the impact block 5 is further operated to hit the fixing member 8, and the stress area is large, which is beneficial to quickly drive the shaft sleeve 15 to move.

[0052] In some embodiments, the fixing member 8 is circular and is sleeved on the lead screw 3. The positions of the blocking nuts 4 can be selected according to the stroke of the impact block 5, and the number of the blocking nuts 4 can be selected according to the stroke of the impact block 5, for example, two blocking nuts are arranged.

[0053] The specific embodiment of the balance cylinder shaft sleeve replacement device is as follows:

[0054] The first driving mechanism is located in the containing space of the support member 1. The other end cover of the balance cylinder is removed first to make the other end of the balance cylinder open. The support member 1 is fixedly connected with the other end of the balance cylinder. Then the first driving member 2 is driven. The driving part 22 of the first driving member 2 enters the balance cylinder from the containing space to drive the connecting shaft 9 and the crank 10 in the balance cylinder to move a distance. Then the one end of the lead screw 3 is threadedly connected with the threaded hole in the shaft sleeve 15. The impact block 5 is operated to hit the blocking nut 4, so that the lead screw 3 moves away from the crank 10, thereby driving the shaft sleeve 15 to move. The shaft sleeve 15 is separated. Finally, the shaft sleeve 15 is removed.

[0055] The advantages of the balance cylinder shaft sleeve replacement device are as follows:

[0056] 1. The jointed balance cylinder has large internal connecting shaft pressure. When the shaft sleeve is replaced, the internal connecting shaft needs to be pushed out to a position where the shaft sleeve is not stressed. The first driving mechanism is used to drive the connecting shaft to move, and the stress is more uniform. The second driving mechanism is operated, which can safely and stably push out the internal connecting shaft of the balance cylinder and make the balance cylinder shaft sleeve in a relaxed state, so that the shaft sleeve can be better taken out and replaced.

[0057] 2. The screw bending, sliding and jumping out to hurt people can be completely eliminated.

[0058] 3. The replacement device is safe and reliable, firm and durable. The replacement time of the balance cylinder shaft sleeve is 2 hours, and the operation can be completed by only two people, the efficiency is improved by 3 times, the work efficiency is improved, and the labor maintenance cost is reduced.

[0059] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A device for replacing a balance cylinder bushing, wherein a connecting shaft is provided inside the balance cylinder, a crank is provided at one end of the connecting shaft, the crank is located outside one end of the balance cylinder, a bushing is provided inside the crank, and the connecting shaft is perpendicular to the bushing, characterized in that, The device includes a first drive mechanism and a second drive mechanism. The first drive mechanism includes a support member and a first drive member. The support member is used to connect to the other end of the balance cylinder. The support member has a receiving space that communicates with the opening at the other end of the balance cylinder. The first drive member is located within the receiving space. The main body of the first drive member is connected to the support member. The drive part of the first drive member can enter the balance cylinder from the opening at the other end of the balance cylinder to drive the connecting shaft inside the balance cylinder to move along its axial direction. The second drive mechanism is connected to the inner bushing of the balance cylinder to drive the bushing to move.

2. The balance cylinder bushing replacement device according to claim 1, characterized in that, The second driving mechanism includes a lead screw, a blocking nut, and an impact block. The lead screw has an external thread that mates with the internal thread hole of the bushing. The blocking nut is mounted on the lead screw, and the impact block is slidably mounted on the lead screw.

3. The balance cylinder bushing replacement device according to claim 2, characterized in that, The device further includes a fixing member, which is disposed on the lead screw and located between the blocking nut and the impact block. The fixing member abuts against the blocking nut, and the surface area of ​​the fixing member is larger than the surface area of ​​the blocking nut.

4. The balance cylinder bushing replacement device according to claim 3, characterized in that, The fastener has a circular cross-section.

5. The balance cylinder bushing replacement device according to claim 1, characterized in that, The support member includes a bottom surface, a top surface, and an annular side surface. The annular side surface is disposed between the bottom surface and the top surface. The annular side surface is connected to and perpendicular to the bottom surface and the top surface. Both the bottom surface and the annular side surface have openings that communicate with the accommodating space.

6. The balance cylinder bushing replacement device according to claim 5, characterized in that, The annular side surface is arc-shaped.

7. The balance cylinder bushing replacement device according to claim 5, characterized in that, The annular side surface includes a first side surface, a second side surface, and a third side surface. The first side surface and the third side surface are arranged opposite to each other, and the first side surface and the third side surface are both connected to the same side of the second side surface.

8. The balance cylinder bushing replacement device according to claim 5, characterized in that, The bottom surface of the support member and the other end of the balance cylinder are provided with corresponding mounting holes. The support member and the balance cylinder are fixedly connected by fasteners installed in the mounting holes.

9. The balance cylinder bushing replacement device according to claim 1, characterized in that, A drive block is provided at the end of the drive portion of the first drive member that is away from the main body portion.

10. The balance cylinder bushing replacement device according to claim 1, characterized in that, The first driving component is a cylinder, a hydraulic cylinder, or a motor.

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