Movable rivet pulling device, application and working method

Abstract

The invention discloses a movable rivet pulling device, an application and a working method, solves the problem that all rivet pulling devices in the prior art are fixed and cannot be suitable for different use scenes, and has the beneficial effects of meeting different use scenes and improving the working efficiency, and the specific scheme is as follows: the movable rivet pulling device comprises a base, the base is movable and supports the lifting assembly, the lifting assembly is connected with the gravity balance assembly, the gravity balance assembly is connected with the rivet pulling assembly, the rivet pulling assembly is provided with an opening, a component can enter the opening, and the rivet pulling assembly can rivet rivets at the position of the component. A rotating part is arranged between the rivet pulling assembly and the gravity balance assembly to drive the rivet pulling assembly to rotate, riveting can be achieved in all directions of a component, and the base drives the whole device to move so as to rivet multiple to-be-riveted positions.

Description

Technical Field

[0001] The invention relates to the technical field of trains, and in particular to a movable riveting device, application and working method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] During the manufacturing process of the EMU train body, many components are connected by rivets. The specific installation method is to heat the rivets to a certain temperature, quickly insert them into the installation holes, and use fixed hydraulic pliers to press the rivets into shape. After a certain period of operation, they need to be repaired and advanced repaired. During the repair and advanced repair process, it is necessary to remove the rusted rivets at some structures of the train. After removal, the rivets need to be re-installed and anchored. For example, the train end connection hook is installed on the body structure hook plate seat, and the hook plate seat is connected to the EMU aluminum alloy body with a rivet structure. During long-term use, due to the harsh operating environment or other emergencies, the rivets at the hook plate seat are loose, corroded and damaged, and the rivets at this position need to be replaced. The inventor found the following problems:

[0004] During maintenance work, the maintenance location is not fixed and fixed riveting mechanisms cannot be used for operation;

[0005] The current method is to manually hammer the rivet heads for hot riveting operations, which requires partial cutting of the vehicle body frame floor. Manual hot riveting operations use riveting hammers for hammering, which has the problem of poor surface forming of the rivet heads after hammering. It requires a high level of skill from personnel and has a high probability of defective products.

[0006] In addition, during the maintenance of other train components, there are components that are fixed to the car body and cannot be removed. The train as a whole is large, but the space under the car is limited. The number of rivets is large, and manual riveting requires operators to work in unreasonable postures for a long time, and the labor intensity of the operation is high. Moreover, the position of the rivets is uncertain, some are in the horizontal direction, and some are in the longitudinal direction, which makes it more difficult to anchor the rivets during the maintenance process.

[0007] In some solutions, even if a fixed rivet mechanism can be used, the fixed rivet mechanism mainly applies force from top to bottom, and for maintenance operations, the upper space of some components is limited, resulting in the inability to smoothly carry out the anchoring operation. Summary of the invention

[0008] In view of the shortcomings of the prior art, the first object of the present invention is to provide a movable riveting device that can effectively replace manual labor, is suitable for different maintenance environments, and improves the efficiency of maintenance operations.

[0009] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0010] In the first aspect, the present invention provides a movable riveting device, including a base, which is movable and supports a lifting assembly, the lifting assembly is connected to a gravity balance assembly, the gravity balance assembly is connected to the riveting assembly, the riveting assembly is provided with an opening, a component can enter the opening, the riveting assembly can rivet the rivets at the component, a rotating component is provided between the riveting assembly and the gravity balance assembly to drive the riveting assembly to rotate, and riveting can be achieved in all directions of the component, and the base drives the entire device to move to rivet multiple locations to be riveted.

[0011] In the above-mentioned rivet device, the base supports the lifting assembly, and the lifting assembly is connected to the rivet assembly through a gravity balance assembly and a rotating component. Considering that the weight of the rivet assembly is greater than 200 pounds, a gravity balance assembly is provided to ensure the overall balance. Only in this way can the overall structure be reasonably arranged, while ensuring that the entire rivet device is movable, it can also ensure the stability of the whole during operation. The rivet assembly can rotate, thereby realizing the anchoring of rivets in different directions, and the sequential anchoring of multiple rivets can be achieved in a narrow space.

[0012] The movable riveting device as described above further includes a controller, which is separately connected to the lifting assembly and the riveting assembly. The controller is arranged at the base, which increases the weight of the base and is beneficial to the overall balance.

[0013] A movable riveting device as described above, taking into account the lifting accuracy, the lifting assembly is a multi-stage lifting assembly, the lifting assembly includes a first lifting member and a second lifting member, the base supports the first lifting member and the second lifting member, the first lifting member is connected to the first mounting frame, the second lifting member is connected to the second mounting frame, the second mounting frame is slidably connected to the first mounting frame, the second mounting frame is connected to the gravity balance assembly, the first lifting member realizes the initial lifting of the riveting assembly, and the second lifting member realizes further adjustment of the lifting of the riveting assembly.

[0014] In a movable riveting device as described above, a support column is arranged on one side of the upper surface of the base, the first lifting member is arranged inside the support column, the first power source of the first lifting member is fixed to the upper surface of the base, and the second lifting member is located between the first power source and the support column, which is conducive to ensuring the rationality of the overall structural layout.

[0015] In the movable riveting device as described above, the first lifting member is a hydraulic lifting mechanism, the hydraulic lifting mechanism is provided with a hydraulic station, the hydraulic station is arranged inside the base, the distance between the first power source and the riveting assembly is smaller than the distance between the support column and the riveting assembly, the hydraulic station is placed at the base, and the first power source is arranged at the top of the base, which is conducive to ensuring the weight at the base and ensuring the overall stability.

[0016] In a movable riveting device as described above, a support block is arranged on the upper surface of the base, the support block is connected to the support column, the support block is located between the first power source and the support column, the support block supports the second lifting member, and the height of the second power source of the second lifting member can be raised by the support block, thereby ensuring the rationality of the overall structural layout while realizing the function of the second lifting member.

[0017] In the movable riveting device as described above, the second lifting member is a linear reciprocating mechanism, the second lifting member is connected to the lower half of the second mounting frame, and the upper side of the second mounting frame is connected to the gravity balance assembly, which is conducive to ensuring the structural stability of the second mounting frame.

[0018] A movable riveting device as described above, the gravity balance component includes a shell, a plurality of counterweights inside the shell, the counterweights are detachably connected to the shell, one side of the shell is connected to the lifting assembly, a support shaft is arranged through the shell, the counterweights are sleeved on the outside of the support shaft, one end of the support shaft is connected to the lifting assembly, and the other end is connected to the riveting assembly through a support bearing, so that the number of counterweights can be adjusted according to the weight of the riveting assembly to ensure that the entire device will not overturn during the operation of the riveting assembly.

[0019] A movable riveting device as described above, wherein the riveting assembly includes a U-shaped frame, one side of the U-shaped frame forms the opening, a fixed die is arranged on one side of the U-shaped frame opening, and a movable die is arranged on the other side of the U-shaped frame opening, the movable die is arranged coaxially with the fixed die, the fixed die and the movable die cooperate to anchor the rivet, and the movable die and the fixed die are arranged coaxially to facilitate smooth anchoring of the rivet in any orientation.

[0020] A movable riveting device as described above, wherein the U-shaped frame supports the linear drive member, a through hole is provided on one side of the U-shaped frame, the telescopic end of the linear drive member passes through the through hole and is connected to the movable mold, and the linear drive member is connected to the controller;

[0021] Arc-shaped notches are respectively arranged at the matching ends of the fixed mold and the movable mold.

[0022] In the movable riveting device as described above, movable wheels are arranged on the bottom side of the base, and the movable wheels are lockable wheels, so that when the riveting device is fixed, the position of the entire riveting device is ensured to be stable.

[0023] In a second aspect, the present invention further provides an application of a movable riveting device for use in the maintenance of trains.

[0024] In a third aspect, the present invention further provides a working method of a movable riveting device, comprising the following contents:

[0025] According to the position of the rivet, the mobile base drives the entire device to move to the position to be riveted, and the initial height of the rivet assembly is adjusted by the lifting assembly. According to the direction of the rivet, such as longitudinal, transverse or oblique, the rivet assembly is rotated relative to the gravity balance assembly under the setting of the rotating component. The movable end of the rivet assembly is located on the side with a wider space. The rivet assembly is aligned with the rivet, and the fixed end of the rivet assembly is brought into contact with the rivet by the mobile base or the lifting assembly, so that the fixed mold is brought into contact with one side of the rivet, and the rivet assembly works to achieve riveting of the rivet.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1) The rivet pulling device in the present invention is movable as a whole. In this way, for the non-fixed environment of the maintenance site, the rivet pulling assembly can be directly moved to the place to be anchored. Because the whole body is liftable, it can be moved in a relatively narrow space after being retracted, effectively replacing manual work. The liftable rivet pulling device can also meet the anchoring requirements of different heights. In addition, considering that the weight of the rivet pulling assembly is greater than 200 pounds, the present invention does not simply set moving wheels and lifting assemblies, but also takes into account the balance of the overall movement and work. A gravity balance assembly is also provided between the lifting assembly and the rivet pulling assembly to effectively ensure the overall balance.

[0028] 2) The present invention takes into account that rivets of multiple components in the train need to be anchored, and the orientations of these rivets may be different, some horizontally, some vertically, and some diagonally. For this reason, a rotating component is provided between the gravity balance component and the rivet component in the present application, so that the rivet component can rotate, thereby realizing the anchoring of rivets in different directions; and the rotatable rivet component allows the active end of the rivet component to be placed on the side with larger space, thereby applying force from the side with larger space to the side with smaller space, which has higher flexibility and meets the use requirements of smaller space on one side of the component.

[0029] 3) The lifting assembly of the present invention is provided with a first lifting member and a second lifting member. The first lifting member drives the rivet assembly to perform preliminary adjustment, and the second lifting member realizes further adjustment of the lifting of the rivet assembly, that is, it can realize fine adjustment, so that the opening of the rivet assembly is effectively aligned with the part to be anchored of the component, thereby ensuring the accuracy of anchoring. Moreover, the reasonable arrangement of the second lifting member can also ensure the balance of the overall structure, which is conducive to ensuring the overall smooth performance during operation and movement.

[0030] 4) In the present invention, since the weight of the rivet assembly is relatively large, the gravity balance assembly is also on the upper side of the entire device. For this reason, the present invention provides a support column, through which the base and the upper structural member are connected. In order to achieve the lifting of the first lifting member, the first lifting member adopts a hydraulic lifting mechanism, and the hydraulic station is arranged at the base to effectively ensure the weight of the base. The support block is arranged between the support column and the first power source to ensure the overall mass balance of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 It is a schematic diagram of the working state of a movable riveting device according to one or more embodiments of the present invention.

[0033] Figure 2 It is a schematic diagram of a movable riveting device when lowering its height according to one or more embodiments of the present invention.

[0034] Figure 3 It is a side view of a partial structure of a movable riveting device according to one or more embodiments of the present invention.

[0035] Figure 4 It is a schematic diagram of a rivet assembly in a movable rivet device according to one or more embodiments of the present invention.

[0036] Figure 5 It is an enlarged schematic diagram of a fixed die in a movable riveting device according to one or more embodiments of the present invention.

[0037] Figure 6 It is an enlarged schematic diagram of a movable die in a movable riveting device according to one or more embodiments of the present invention.

[0038] Figure 7 It is a schematic diagram of a gravity balance component in a movable riveting device according to one or more embodiments of the present invention.

[0039] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0040] Wherein: 1. movable wheel, 2. base, 3. first power source, 4. second power source, 5. second lifting member, 6. linear drive member, 7. hook plate seat, 8. rivet assembly, 9. bolt, 10. gravity balance assembly, 11. second mounting frame, 12. control button, 13. first mounting frame, 14. support column, 15. support block, 16. electrical box, 17. fixed mold, 18. movable mold, 19. track, 20. limit block, 21. first convex part, 22. second convex part, 23. arc-shaped recess, 24. screw rod, 25. shell, 26. counterweight block, 27. support shaft. DETAILED DESCRIPTION

[0041] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0043] As introduced in the background technology, there is a problem in the prior art that the riveting devices are all fixed and cannot be applied to different usage scenarios. In order to solve the above technical problem, the present invention proposes a movable riveting device.

[0044] Embodiment 1

[0045] In a typical embodiment of the present invention, reference is made to Figure 1 , Figure 2 As shown, a movable riveting device includes a base 2, which is movable. The base 2 supports a lifting assembly, which is connected to a gravity balance assembly 10. The gravity balance assembly 10 is connected to a riveting assembly 8. The riveting assembly 8 is provided with an opening, and a component can enter the opening. The riveting assembly 8 can rivet the rivets at the component. A rotating component is provided between the riveting assembly 8 and the gravity balance assembly 10 to drive the riveting assembly to rotate. Riveting can be achieved in all directions of the component. The base 2 drives the entire device to move to rivet multiple locations to be riveted.

[0046] It is easy to understand that the base 2 is hollow and has a set height. The movable wheels 1 are arranged on the bottom side of the base 2. The movable wheels 1 are arranged at the four corners of the base 2. The movable wheels 1 are lockable wheels. When the riveting device is fixed, the movable wheels 1 are locked to ensure that the position of the entire riveting device is stable.

[0047] Taking into account the lifting accuracy, the lifting assembly is a multi-stage lifting assembly, specifically a two-stage lifting assembly. In this embodiment, the lifting assembly includes a first lifting member and a second lifting member 5. A support column 14 is arranged on one side of the upper surface of the base 2. The support column 14 has a set height and width. The first lifting member is arranged inside the support column 14. The first power source 3 of the first lifting member is fixed on the upper surface of the base 2. The second lifting member 5 is located between the first power source 3 and the support column 14, which is conducive to ensuring the rationality of the overall structural layout.

[0048] Specifically, the first lifting member is connected to the first mounting frame 13, the first mounting frame 13 is a first vertical plate, the second lifting member 5 is connected to the second mounting frame 11, the second mounting frame 11 is a second vertical plate, the second mounting frame 11 is slidably connected to the first mounting frame 13, a track 19 is set on the side of the first mounting frame 13 facing the second mounting frame 11, and the track 19 is provided with two lines along the vertical direction, a slider is set on one side of the second mounting frame 11, the slider cooperates with the track 19, the first mounting frame 13 is provided with limit blocks on the upper and lower sides of the track, the second mounting frame 11 is connected to the gravity balance assembly 10, the first lifting member realizes the initial lifting of the rivet assembly, and the second lifting member 5 realizes further adjustment of the lifting of the rivet assembly 8.

[0049] In this embodiment, the first lifting member is a hydraulic lifting mechanism, such as a hydraulic lifting cylinder. The hydraulic lifting mechanism is located on the inner side of the support column. The support column is hollow. The first mounting frame is provided with a connecting block. The connecting block is provided through the telescopic rod of the hydraulic lifting mechanism and is fixedly connected. The hydraulic lifting mechanism is provided with a hydraulic station. The hydraulic station is arranged inside the base. Structural parts such as a hydraulic pump and an oil tank are arranged inside the hydraulic station to ensure the weight at the base. The first power source 3 is used to drive the action of the hydraulic pump in the hydraulic station. The first power source is a first motor. The distance between the first motor and the rivet assembly is smaller than the distance between the support column and the rivet assembly. The hydraulic station is placed at the base. The first power source is arranged at the top of the base 2, which is conducive to ensuring the weight at the base and ensuring the overall stability.

[0050] In addition, a support block 15 is provided on the upper surface of the base 2, and the support block 15 is connected to the support column 14. The support block 15 is located between the first power source 3 and the support column 14. The support block 15 supports the second lifting member 5. The height of the second power source 4 of the second lifting member 5 can be raised by the support block, thereby ensuring the rationality of the overall structural layout while realizing the function of the second lifting member.

[0051] Specifically, the second lifting member 5 is a linear reciprocating mechanism, which can be a screw reciprocating mechanism. The second power source 4 of the second lifting member is a second motor, which is fixed to the upper surface of the support block. The second motor is connected to the screw rod 24, and the screw rod 24 is vertically arranged. The screw rod 24 is provided with a screw rod slider connected to the lower half of the second mounting frame 11 away from the first mounting frame 13, and the upper half of the second mounting frame away from the first mounting frame is connected to the gravity balance assembly 10, which is beneficial to ensure the structural stability of the second mounting frame.

[0052] refer to Figure 4 As shown, the rivet assembly 8 includes a U-shaped frame, one side of the U-shaped frame forms an opening, a fixed die 17 is arranged on one side of the U-shaped frame opening, and a movable die 18 is arranged on the other side of the U-shaped frame opening. The movable die 18 is coaxially arranged with the fixed die 17, and the fixed die 17 and the movable die 18 cooperate to anchor the rivet. The movable die and the fixed die are coaxially arranged to facilitate the smooth anchoring of the rivet in any orientation.

[0053] It is easy to understand that the U-shaped frame supports the linear drive member 6, and the linear drive member 6 is a hydraulic rod, which is connected to the hydraulic station. A through hole is set on one side of the U-shaped frame, and the telescopic rod of the linear drive member passes through the through hole to be connected to the movable mold 18. A limit block 20 is set on the side of the U-shaped member facing the opening, and the telescopic end of the linear drive member, that is, the telescopic rod, passes through the limit block 20, and the movement of the telescopic rod is limited by the limit block; arc-shaped recesses are respectively set at the mating ends of the fixed mold and the movable mold.

[0054] refer to Figure 5 As shown, the fixed mold 17 is a T-shaped cylindrical part, a section of the fixed mold 17 is inserted into the through hole on one side of the U-shaped frame, the fixed mold 17 is fixedly connected to the U-shaped frame, a first convex portion 21 is arranged in the through hole on one side of the U-shaped frame, a first concave portion is arranged on the fixed mold, the first concave portion and the first convex portion of the fixed mold 17 are connected by a threaded structure to realize a stable connection between the fixed mold and the U-shaped frame, a section of the fixed mold is exposed to the U-shaped frame, and an arc-shaped notch is arranged on one end of the fixed mold exposed to the U-shaped frame.

[0055] refer to Figure 6 As shown, a second recess is provided at the telescopic rod of the linear drive member 6, the movable mold is a cylindrical member, a second convex portion 22 is provided at one end of the movable mold 18, and the second convex portion can be inserted into the second recess to realize the connection between the movable mold of the linear drive member and the telescopic rod, and an arc-shaped recess 23 is provided on the side of the movable mold 18 facing the fixed mold 17.

[0056] Of course, the pull riveting assembly can also directly use the existing hydraulic pliers, the hydraulic pliers are connected to the hydraulic station, and the hydraulic station supplies oil to the hydraulic pliers.

[0057] It is easy to understand that the controller is separately connected to the first power source, the second power source and the linear drive member in the lifting assembly. The controller is arranged in an electrical box 16 on one side of the base. The electrical box 16 and the hydraulic station are arranged side by side. The controller is arranged at the base to increase the weight of the base, which is beneficial to the overall balance. The controller can be a PLC controller or other types of controllers. The support column is provided with a control button 12, which is connected to the controller, and the control of each mechanism is realized through the control button.

[0058] For gravity balance components, refer to Figure 7 As shown, the gravity balance assembly 10 includes a shell 25, the shell 25 is hollow, one side of the shell away from the second mounting frame 11 is open, one side of the shell is fixedly connected to the second mounting frame 11, the shell is detachable, and a plurality of counterweights are arranged inside the shell. The counterweight 26 is hollow, and the counterweight 26 is sleeved in the circumferential direction of the support shaft. The support shaft 27 is arranged through the shell, one end of the support shaft 27 is connected to the second mounting frame, and the other end is connected to the rivet assembly through the support bearing after passing through the shell. The support shaft connects the lifting assembly and the rivet assembly to ensure integrity, and the counterweight is arranged in the circumferential direction of the support shaft to ensure the balance of the upper structural member;

[0059] It should be noted that the number of counterweights 26 can be selected according to demand, and the counterweights 26 are detachably connected to the shell 25. Specifically, through holes are provided on the upper and lower sides of the shell, and the counterweights 26 are also provided with through holes. The bolts 9 or screws pass through the shell and the counterweights and are fastened by nuts. In this way, the number of counterweights can be adjusted according to the weight of the rivet assembly to ensure that the entire device will not overturn during the operation of the rivet assembly.

[0060] The riveting device provided in this embodiment has a base 2 supporting a lifting assembly, and the lifting assembly is connected to the riveting assembly through a gravity balancing assembly and a rotating component. Considering that the weight of the riveting assembly is between 200 catties and 300 catties, a gravity balancing assembly is provided to ensure the overall balance. The gravity balancing assembly is a counterweight block arranged in the circumferential direction of the support shaft. The first power source, the second power source, the first lifting component and the second lifting component are reasonably arranged, so that the overall structure is reasonably arranged, and while ensuring that the entire riveting device is movable, the stability of the whole during operation can also be ensured; the riveting assembly is rotatable, so that the anchoring of rivets in different directions can be achieved, and the sequential anchoring of multiple rivets can be achieved in a narrow space.

[0061] Embodiment 2

[0062] The present embodiment provides an application of a movable riveting device, which is applied to the maintenance of trains. The riveting device can be moved to places where the space is not large enough, and can realize the replacement of multiple rivets at the train hook plate seat 7 and the aluminum alloy body, effectively replacing manual labor. The movable mold can be moved to a larger space under the train to anchor the rivets in the relatively narrow space on the upper side.

[0063] Embodiment 3

[0064] This embodiment provides a working method of a movable riveting device, which is aimed at rivets located in the longitudinal direction and includes the following contents:

[0065] Insert the heated rivet into the position to be replaced from the relatively narrow side such as the upper side;

[0066] According to the position of the rivet, the mobile base 2 drives the entire device to move to the position to be riveted, and the initial height of the rivet assembly is adjusted by the first lifting member. The rivet assembly is rotated relative to the gravity balance assembly under the setting of the rotating component, so that the movable mold 18 in the rivet assembly is placed on the side with a wider space, such as the lower side, so that the rivet assembly 8 is aligned with the rivet, and the rivet assembly 8 is further adjusted by the second lifting member 5 so that the fixed mold 17 contacts one side of the rivet, and the linear drive member in the rivet assembly is actuated to achieve riveting of the rivet.

[0067] Of course, the gravity balancing component can also be rotated relative to the rotating component in a transverse direction or an oblique direction according to the direction in which the rivet is located.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A movable riveting device, characterized in that: It includes a base, which is movable and supports a lifting component. The lifting component is connected to a gravity balance component, which is connected to a rivet component. An opening is provided in the rivet component, and a component can enter the opening. The rivet component can rivet the rivets at the component. A rotating component is provided between the rivet component and the gravity balance component to drive the rivet component to rotate. The component can be riveted in all directions. The base drives the entire device to move to rivet multiple locations to be riveted.

2. A movable riveting device according to claim 1, characterized in that: It also includes a controller, which is separately connected to the lifting assembly and the rivet assembly, and is arranged at the base.

3. The movable riveting device according to claim 1, characterized in that: The lifting assembly is a multi-stage lifting assembly, which includes a first lifting member and a second lifting member. The base supports the first lifting member and the second lifting member. The first lifting member is connected to the first mounting frame, the second lifting member is connected to the second mounting frame, the second mounting frame is slidably connected to the first mounting frame, and the second mounting frame is connected to the gravity balance assembly.

4. A movable riveting device according to claim 3, characterized in that: A support column is arranged on one side of the upper surface of the base, the first lifting member is arranged inside the support column, the first power source of the first lifting member is fixed on the upper surface of the base, and the second lifting member is located between the first power source and the support column.

5. The movable riveting device according to claim 4, characterized in that: The first lifting member is a hydraulic lifting mechanism, the hydraulic lifting mechanism is provided with a hydraulic station, the hydraulic station is arranged inside the base, and the distance between the first power source and the rivet assembly is smaller than the distance between the support column and the rivet assembly.

6. The movable riveting device according to claim 4, characterized in that: A support block is arranged on the upper surface of the base, the support block is connected to the support column, the support block is located between the first power source and the support column, and the support block supports the second lifting member.

7. The movable riveting device according to claim 3, characterized in that: The second lifting member is a linear reciprocating mechanism, the second lifting member is connected to the lower half of the second mounting frame, and the upper side of the second mounting frame is connected to the gravity balance component.

8. The movable riveting device according to claim 1, characterized in that: The gravity balancing assembly includes a shell, a plurality of counterweights inside the shell, the counterweights are detachably connected to the shell, one side of the shell is connected to the lifting assembly, a support shaft is arranged through the shell, the counterweights are sleeved on the outside of the support shaft, one end of the support shaft is connected to the lifting assembly, and the other end is connected to the rivet assembly through a support bearing.

9. The movable riveting device according to claim 2, characterized in that: The rivet assembly includes a U-shaped frame, one side of the U-shaped frame forms the opening, a fixed mold is arranged on one side of the U-shaped frame opening, and a movable mold is arranged on the other side of the U-shaped frame opening. The movable mold is arranged coaxially with the fixed mold, and the fixed mold and the movable mold cooperate to anchor the rivet.

10. The movable riveting device according to claim 9, characterized in that: The U-shaped frame supports the linear drive member, a through hole is provided on one side of the U-shaped frame, the telescopic end of the linear drive member passes through the through hole and is connected to the movable mold, and the linear drive member is connected to the controller; Arc-shaped notches are respectively arranged at the matching ends of the fixed mold and the movable mold.

11. The movable riveting device according to claim 1, characterized in that: The bottom side of the base is provided with movable wheels, which are lockable wheels.

12. Application of a movable riveting device according to any one of claims 1 to 11, characterized in that: Used for train maintenance.

13. A working method of a movable riveting device according to any one of claims 1 to 11, characterized in that: It includes the following: Insert the heated rivet into the position to be replaced from the relatively narrow side of the space; According to the position of the rivet, the mobile base drives the entire device to move to the position to be riveted, and the initial height of the rivet assembly is adjusted by the lifting assembly. According to the direction of the rivet, such as longitudinal, transverse or oblique, the rivet assembly is rotated relative to the gravity balance assembly under the setting of the rotating component. The movable end of the rivet assembly is located on the side with a wider space. The rivet assembly is aligned with the rivet, and the fixed end of the rivet assembly is brought into contact with the rivet by the mobile base or the lifting assembly, so that the fixed mold is brought into contact with one side of the rivet, and the rivet assembly works to achieve riveting of the rivet.

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