Magnetic suspension turnout lockpin gearbox sealing installation tool

Abstract

The utility model discloses a magnetic levitation turnout lockpin gearbox sealing installation tool which comprises a sealing tool part, the sealing tool part comprises a sealing installation part, a positioning part and a force application part, and the sealing installation part and the force application part are connected to the two sides of the positioning part respectively. The sealing tool part is provided with a positioning part, the positioning part extends outwards and protrudes in the radial direction of the sealing tool part from the peripheral face of the sealing installation part, the peripheral face of the sealing installation part is provided with a sealing guide face, the sealing guide face is used for being sleeved with a sealing body, and the side, facing the sealing installation part, of the positioning part is provided with an installation face. And the mounting surface is exposed out of the outer peripheral surface of the sealing mounting part and is used for abutting against the sealing body. The sealing body can be tightly installed in place, the installation quality of the sealing body is greatly improved, meanwhile, the time for replacing the sealing body is shortened, and the working efficiency of installation of the sealing body is greatly improved.

Description

Technical Field

[0001] This utility model relates to rail transit, and more particularly to a sealing installation tool for a maglev turnout lock pin gearbox. Background Technology

[0002] The maglev turnout locking pin gearbox has two identical seals, located on opposite sides of the gearbox. One seal is used for the gearbox input shaft, which connects to the motor drive shaft; the other seal is used for the output shaft, which connects to the encoder. During normal operation, wear of the seal lips can cause lubricating oil leakage within the locking pin gearbox. Excessive oil leakage can damage the gears of the locking pin gearbox.

[0003] Replacing and installing this seal is difficult, time-consuming, and labor-intensive. Because the seal is made of plastic, its outer edge has a certain degree of hardness. It's difficult to press it into place manually, and without suitable assembly tools, only a soft hammer can be used for tapping. Maintaining a balanced fit around the seal is challenging. Even slight carelessness during assembly or excessive tapping can damage the seal lip or deform the outer edge, rendering the seal unusable and all previous work wasted. Furthermore, replacing the seal requires first removing the motor or encoder connected to the gearbox, and then reassembling it after the seal is installed, often requiring advance preparation. In addition, seal replacement can only be performed within a short window of about 6 hours between the end of one day's maglev train operation and the start of the next, resulting in significant maintenance pressure. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings of the existing technology. This utility model provides a sealing installation tool for a magnetic levitation turnout lock pin gearbox.

[0005] This utility model is achieved through the following technical solution:

[0006] A sealing installation fixture for a maglev turnout lock pin gearbox includes a sealing fixture component. The sealing fixture component includes a sealing mounting part, a positioning part, and a force-applying part. The sealing mounting part and the force-applying part are respectively connected to both sides of the positioning part. The positioning part extends radially outward from the outer peripheral surface of the sealing mounting part. The outer peripheral surface of the sealing mounting part has a sealing guide surface for mounting a sealing body. The side of the positioning part facing the sealing mounting part has a mounting surface, which protrudes from the outer peripheral surface of the sealing mounting part and abuts against the sealing body.

[0007] Furthermore, the outer peripheral surface of the force-applying part has a gripping surface, so that the applied force is applied to the gripping surface and used to drive the sealing tooling component to move outward in a direction away from the sealing body.

[0008] Furthermore, the side of the force-applying part facing away from the sealing mounting part has a striking surface, so that the striking tool applies a force toward the sealing body on the striking surface.

[0009] Furthermore, the sealing fixture component has an axial guide hole, which is recessed inward along the axial direction of the sealing fixture component from the side of the sealing mounting part opposite to the force-applying part, and the axial guide hole passes through the sealing mounting part and the positioning part and extends into the force-applying part.

[0010] Furthermore, the axial guide hole has a first inner hole and a second inner hole. The first inner hole extends through the sealing mounting portion into the positioning portion, and the second inner hole is recessed inward from the bottom of the first inner hole into the force-applying portion. The inner diameter of the first inner hole is larger than the inner diameter of the second inner hole, so that a positioning step is formed between the first inner hole and the second inner hole.

[0011] Furthermore, the sealing tooling component also has a vent hole, one end of which is connected to the axial guide hole, and the other end of which extends to the outer surface of the force-applying part and is connected to the outside.

[0012] Furthermore, the positioning part has a positioning groove on the side facing the sealing mounting part, and the positioning groove is located at the outer end of the positioning part away from the sealing mounting part.

[0013] Furthermore, the end of the sealing mounting portion away from the positioning portion has an inclined guide surface, and the inclined guide surface and the sealing guide surface have a smooth transition.

[0014] Furthermore, the sealing tooling component is made of a lightweight and soft material.

[0015] Furthermore, the material of the sealing tooling component is a lightweight aluminum alloy.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model relates to a sealing installation fixture for a maglev turnout lock pin gearbox. The sealing fixture components allow the sealing body to be fitted onto the sealing guide surface and tightly abut against the mounting surface. Then, the sealing fixture components press the sealing body into the sealing groove of the lock pin gearbox, ensuring that the sealing body can be tightly installed in place. This greatly improves the installation quality of the sealing body, reduces the time required to replace the sealing body, and significantly improves the work efficiency of the sealing body installation. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the internal structure of the magnetic levitation turnout lock pin gearbox sealing installation tool according to an embodiment of the present invention.

[0019] Figure 2 This is a side view of the sealing installation tool for the maglev turnout lock pin gearbox according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of the magnetic levitation turnout lock pin gearbox sealing installation tool during use, according to an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the magnetic levitation turnout lock pin gearbox sealing installation tool after use, according to an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] Sealing tooling component 1

[0024] Sealing installation part 11

[0025] Sealing guide surface 111

[0026] Inclined guide surface 112

[0027] Positioning unit 12

[0028] Mounting surface 121

[0029] Positioning groove 122

[0030] Force Section 13

[0031] Grip surface 131

[0032] Tapping surface 132

[0033] Axial guide hole 14

[0034] First inner hole 141

[0035] Second inner hole 142

[0036] Vent hole 15

[0037] Sealing body 10

[0038] Gearbox output shaft 20

[0039] Gearbox housing 30

[0040] Lubricating oil 40 Detailed Implementation

[0041] The following description of the embodiments is with reference to the accompanying drawings, which illustrate specific embodiments in which the present invention can be implemented.

[0042] like Figure 1, Figure 2 , Figure 3 and Figure 4 As shown, this embodiment discloses a sealing installation fixture for a maglev turnout lock pin gearbox. The sealing installation fixture for the maglev turnout lock pin gearbox includes a sealing fixture component 1, which includes a sealing installation part 11, a positioning part 12, and a force-applying part 13. The sealing installation part 11 and the force-applying part 13 are respectively connected to the two sides of the positioning part 12. The positioning part 12 extends outward from the outer peripheral surface of the sealing installation part 11 along the radial direction of the sealing fixture component 1. The outer peripheral surface of the sealing installation part 11 has a sealing guide surface 111, on which a sealing body 10 is fitted. The side of the positioning part 12 facing the sealing installation part 11 has a mounting surface 121, which is exposed on the outer peripheral surface of the sealing installation part 11 and is used to abut against the sealing body 10. The sealing body 10 is installed on the sealing fixture component 1 along the sealing guide surface 111. The inner wall surface of the sealing body 10 is fitted onto the sealing guide surface 111, and the four sides of the sealing body 10 are tightly pressed against the mounting surface 121, thus positioning the sealing body 10 on the sealing fixture component 1. Then, the old sealing body 10 is removed from the sealing groove of the locking pin gearbox. Removing the old seal too early will cause a large amount of lubricating oil 40 to leak. Afterwards, the sealing body 10 is pressed into the sealing groove of the locking pin gearbox by the sealing fixture component 1, ensuring that the sealing body 10 can be tightly installed in place. This greatly improves the installation quality of the sealing body 10, reduces the time for replacing the sealing body 10, and greatly improves the work efficiency of the sealing body 10 installation.

[0043] The outer peripheral surface of the force-applying part 13 has a gripping surface 131, so that the applied force is applied to the gripping surface 131 and used to drive the sealing tooling component 1 to move outward in a direction away from the sealing body 10. After the sealing body 10 is installed in place, the gripping surface 131 of the sealing tooling component 1 is gripped and the applied force is applied to the gripping surface 131, thereby driving the sealing tooling component 1 to move outward in a direction away from the sealing body 10, so that the sealing tooling component 1 is pulled outward, which is convenient to use.

[0044] Of course, when installing the sealing body 10, you can also grip the gripping surface 131 of the sealing tooling component 1 and drive the sealing tooling component 1 to move inward in the direction close to the sealing body 10, so as to slowly press the sealing body 10 into the sealing groove.

[0045] The force-applying part 13 has a striking surface 132 on the side facing away from the sealing mounting part 11, so that the striking tool applies a force toward the sealing body 10 on the striking surface 132. The sealing fixture component 1 moves inward toward the sealing body 10, so that the sealing body 10 is evenly aligned with the sealing groove on the locking pin gearbox, and the sealing body 10 is slowly pressed into the sealing groove; if necessary, a soft hammer can be used to gently tap the striking surface 132 of the sealing fixture component 1 to ensure that the sealing body 10 is correctly installed. The striking surface 132 is flat, with a simple structure, convenient processing and manufacturing, and high stability during use.

[0046] The sealing fixture component 1 has an axial guide hole 14. The axial guide hole 14 is recessed inward along the axial direction of the sealing fixture component 1, starting from the side of the sealing mounting part 11 facing away from the force application part 13. The axial guide hole 14 passes through the sealing mounting part 11 and the positioning part 12 and extends into the force application part 13. The axial guide hole 14 has a guiding and positioning function. When the maglev turnout lock pin gearbox sealing mounting fixture is in use, the sealing fixture component 1 moves inward along the direction close to the gearbox housing 30. The axial guide hole 14 will be fitted onto the gearbox output shaft 20 and move axially on the gearbox output shaft 20, so that the four sides of the sealing body 10 are evenly aligned with the sealing groove on the lock pin gearbox, achieving precise positioning and installation.

[0047] The axial guide hole 14 has a first inner hole 141 and a second inner hole 142. The first inner hole 141 extends through the sealing mounting part 11 and into the positioning part 12. The second inner hole 142 is recessed inward from the bottom of the first inner hole 141 into the force application part 13. The inner diameter of the first inner hole 141 is larger than the inner diameter of the second inner hole 142, so that a positioning step is formed between the first inner hole 141 and the second inner hole 142. The gearbox output shaft 20 first passes through the first inner hole 141 and is inserted into the second inner hole 142, so that the four sides of the sealing body 10 are evenly aligned with the sealing groove on the locking pin gearbox. Then, the gearbox output shaft 20 extends into the second inner hole 142 and is precisely inserted into the first inner hole 141, so that the stepped surface on the gearbox output shaft 20 fits against the positioning step, so that the gearbox output shaft 20 is accurately positioned in the axial guide hole 14, and the sealing body 10 is accurately positioned and installed.

[0048] In this embodiment, the sealing fixture component 1 also has a vent hole 15. One end of the vent hole 15 is connected to the axial guide hole 14, and the other end of the vent hole 15 extends to the outer surface of the force application part 13 and communicates with the outside. When the gearbox output shaft 20 is inserted into the axial guide hole 14, the air in the axial guide hole 14 will be discharged outward through the vent hole 15. When the sealing fixture component 1 is moved outward, the external air will enter the axial guide hole 14 through the vent hole 15, which facilitates the disassembly and separation of the gearbox output shaft 20 from the sealing fixture component 1.

[0049] In the maglev turnout lock pin gearbox sealing installation fixture of this embodiment, the sealing fixture component 1 is manufactured based on the installation position relationship of the sealing body 10 on the lock pin gearbox and the outer diameter of the input / output shaft of the lock pin gearbox. The shape of the sealing fixture component 1 is a cylinder with a hollow interior and different outer diameters. The outer diameter of the sealing installation part 11 and the outer diameter of the sealing loading position are determined according to the specifications of the sealing body 10. The axial guide hole 14 must have a certain length, and its inner diameter must be properly matched with the shaft diameter and extension length of the lock box input / output shaft to ensure that there is no tilting or unevenness around the seal body 10 during installation. Moreover, to ensure that the seal body 10 can be tightly installed in place, the sealing fixture component 1 is designed with a pre-set tapping surface 132 for light tapping with a soft hammer and a gripping surface 131 for disassembling the fixture after the seal is in place.

[0050] Before using the magnetic levitation turnout lock pin gearbox sealing installation fixture of this embodiment, a thin layer of grease is first applied to the outer surface of the sealing guide surface 111 of the sealing fixture component 1 and the inner wall surface of the axial guide hole 14. This facilitates the sealing body 10 to slide off the sealing guide surface 111 after the sealing body 10 is installed in place, and makes it easy for the sealing fixture component 1 to slide off and be removed from the gearbox output shaft 20.

[0051] When using the sealing installation fixture for the maglev turnout locking pin gearbox, the sealing body 10 is installed on the sealing fixture component 1 along the sealing guide surface 111, ensuring that the sealing body 10 is tightly pressed against the mounting surface 121. The old sealing body 10 is then removed from the sealing groove of the locking pin gearbox. Premature removal of the old sealing body 10 will cause a large leakage of lubricating oil 40 inside the gearbox housing 30. The sealing fixture component 1 is moved axially inward along the gearbox output shaft 20 to evenly align the sealing body 10 with the sealing groove on the locking pin gearbox, and the sealing body 10 is slowly pressed into the sealing groove. The back of the sealing body 10, relying on the surrounding inner frame, tightly fits with the sealing groove on the locking pin gearbox, firmly "attaching" it together. The lip edge is also tightly fitted to the gearbox output shaft 20, sealing the lubricating oil 40 inside the locking pin gearbox without any leakage. The positioning of the sealing body 10 is checked again to ensure that it is fully installed and that there is no damage to the sealing lip edge or the surrounding frame, ensuring that the sealing body 10 is installed correctly without damage. This tooling is simple and easy to use, and it basically eliminates the possibility of damage to the sealing body 10 caused by manual installation and the problem of large leakage of lubricating oil 40 caused by the original long installation process.

[0052] The positioning part 12 has a positioning groove 122 on the side facing the sealing mounting part 11. The positioning groove 122 is located at the outer end of the positioning part 12 away from the sealing mounting part 11. The positioning groove 122 has a positioning function. When the positioning part 12 moves in the direction close to the gearbox housing 30, the gearbox housing 30 extends into the positioning groove 122 and abuts tightly against the inner wall surface of the positioning groove 122, further ensuring that the sealing body 10 is correctly installed in place.

[0053] The end of the sealing mounting part 11 furthest from the positioning part 12 has an inclined guide surface 112, which smoothly transitions with the sealing guide surface 111. The inclined guide surface 112 provides a guiding function. When the sealing body 10 is installed onto the sealing fixture component 1, it first fits onto the inclined guide surface 112. The guiding function of the inclined guide surface 112 allows the sealing body 10 to smoothly fit onto the sealing guide surface 111 and abut against the mounting surface 121, facilitating the installation of the sealing body 10 onto the sealing fixture component 1. Simultaneously, after the sealing body 10 is pressed into the sealing groove, the inclined guide surface 112 facilitates its sliding off the sealing mounting part 11.

[0054] The sealing fixture component 1 is made of a lightweight and soft material. Considering the ease of use and portability of the sealing fixture component 1, a lightweight and soft material was chosen to prevent scratches or damage to the gearbox output shaft 20 and the sealing body 10, which could affect the sealing effect of the sealing body 10. Specifically, the material of the sealing fixture component 1 can be a lightweight aluminum alloy. Based on the above application and material selection conditions, a lightweight aluminum alloy was chosen, as its weight and hardness meet the application requirements.

[0055] Before the application of the maglev turnout locking pin gearbox seal installation fixture in this embodiment, there were approximately one hundred similar seal bodies 10 in the maglev turnout. Between 2005 and 2007, due to improper installation methods, there were numerous gearbox oil leaks caused by damage to the seal bodies 10, resulting in approximately 20 seal bodies to be maintained annually. Replacing the seal bodies 10 was frequent, keeping maintenance personnel extremely busy. After the application of the maglev turnout locking pin gearbox seal installation fixture in this embodiment, the installation quality of the seal bodies 10 was greatly improved, essentially eliminating damage caused by installation. Due to the improved installation quality of the seal bodies 10, the number of seal body replacements was reduced to 1-2 per year. Simultaneously, the time for gearbox seal replacement maintenance was reduced from 6 hours to approximately 1 hour, significantly improving the efficiency of seal installation.

[0056] The maglev turnout lock pin gearbox sealing installation fixture of this embodiment can be used not only for maglev turnout lockbox gearboxes, but also for the installation of seals for other types of gearboxes with the same outer diameter of the output / input shaft, similar sealing material, and the same installation method as the maglev turnout lockbox gearbox, thus having certain application value. Even if there are differences in gearbox shaft size, the inner diameter and outer dimensions of the fixture can be appropriately changed according to the different gearbox shafts and seal specifications to form a series of fixtures. At the same time, it can also provide a solution to the sealing assembly problem for gearbox oil leakage issues with similar conditions.

[0057] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sealing installation fixture for a maglev turnout lock pin gearbox, characterized in that, It includes a sealing fixture component, which includes a sealing mounting part, a positioning part, and a force-applying part. The sealing mounting part and the force-applying part are respectively connected to both sides of the positioning part, and the positioning part extends outward radially from the outer peripheral surface of the sealing mounting part. The outer peripheral surface of the sealing mounting part has a sealing guide surface for fitting a sealing body. The side of the positioning part facing the sealing mounting part has a mounting surface, which protrudes from the outer peripheral surface of the sealing mounting part and is used to abut against the sealing body.

2. The sealing and installation fixture for the maglev turnout lock pin gearbox as described in claim 1, characterized in that, The outer peripheral surface of the force-applying part has a gripping surface, so that the applied force is applied to the gripping surface and used to drive the sealing tooling component to move outward in a direction away from the sealing body.

3. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 1, characterized in that, The force-applying part has a striking surface on the side opposite to the sealing mounting part, so that the striking tool applies a force toward the sealing body on the striking surface.

4. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 1, characterized in that, The sealing fixture component has an axial guide hole. The axial guide hole is recessed inward along the axial direction of the sealing fixture component from the side of the sealing mounting part opposite to the force-applying part. The axial guide hole passes through the sealing mounting part and the positioning part and extends into the force-applying part.

5. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 4, characterized in that, The axial guide hole has a first inner hole and a second inner hole. The first inner hole extends through the sealing mounting part into the positioning part. The second inner hole is recessed inward from the bottom of the first inner hole into the force application part. The inner diameter of the first inner hole is larger than the inner diameter of the second inner hole, so that a positioning step is formed between the first inner hole and the second inner hole.

6. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 4, characterized in that, The sealing fixture also has a vent hole, one end of which is connected to the axial guide hole, and the other end of which extends to the outer surface of the force-applying part and is connected to the outside.

7. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 1, characterized in that, The positioning part has a positioning groove on the side facing the sealing mounting part, and the positioning groove is located at the outer end of the positioning part away from the sealing mounting part.

8. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 1, characterized in that, The end of the sealing mounting part away from the positioning part has an inclined guide surface, and the inclined guide surface and the sealing guide surface have a smooth transition.

9. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 1, characterized in that, The sealing fixture component is made of a lightweight and soft material.

10. The sealing installation fixture for the maglev turnout lock pin gearbox as described in claim 9, characterized in that, The sealing fixture component is made of lightweight aluminum alloy.

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