Movable maintenance device based on automobile part manufacturing

By designing a mobile maintenance device, using components such as fuel injector heads, fans and water pumps, the problem of low maintenance efficiency of spare parts in the existing technology is solved, automatic oiling and cleaning is realized, and the maintenance efficiency and life of spare parts is improved.

CN119140482APending Publication Date: 2024-12-17JIANGSU YALONG AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202310718802.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-06-16
Publication Date
2024-12-17

AI Technical Summary

Technical Problem

The existing automotive spare parts maintenance devices are large and wasteful, making it impossible to efficiently complete the spare parts maintenance process, especially in independent mechanisms.

Method used

A mobile maintenance device is designed, including universal wheels, oiling mechanism, cleaning components and lifting components. It uses fuel injection heads, fans, heating rods, water pumps and water spray brush balls to achieve automatic oiling of spare parts. , clean and dry.

Benefits of technology

It improves the maintenance efficiency and service life of spare parts, realizes automatic maintenance of spare parts, combines oiling and cleaning functions, and improves work efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The invention relates to the technical field of automobile parts, and discloses an automobile part manufacturing-based movable maintenance device which comprises universal wheels, a bottom plate is fixedly mounted at the tops of the universal wheels, a handle is fixedly mounted on the right side of the bottom plate, a maintenance box is fixedly mounted at the top of the bottom plate, and a sealing glass door is rotatably mounted on the front surface of the maintenance box; and an oiling mechanism, a cleaning assembly and a lifting assembly are fixedly mounted in the maintenance box. According to the movable maintenance device based on automobile part manufacturing, through the arranged oiling mechanism, in the using process, a first water pump is driven, oil in an oil storage tank is pumped into a transfer box through an oil pumping pipe, the oil is sprayed to the tops of parts through an oil spraying head, the oil is evenly brushed under the action of a brush block, a heating rod is driven to heat, and the temperature of the interior of a maintenance box is increased; and oil on the spare and accessory parts can be quickly dried, so that the efficiency of a treatment procedure during maintenance and oiling of the spare and accessory parts is improved, and the service life of the spare and accessory parts is prolonged.
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Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a mobile maintenance device used for automobile parts manufacturing. Background Art

[0002] As the foundation of the automobile industry, auto parts are necessary factors to support the sustainable and healthy development of the automobile industry. In particular, the current vigorous and full-scale independent development and innovation in the automobile industry requires a strong spare parts system to support it.

[0003] Existing maintenance devices for auto parts are usually large-scale manufacturing organizations, and the maintenance process is concentrated when leaving the factory. When a small number of parts need to be maintained, using large-scale maintenance organizations will undoubtedly waste a lot of resources. At the same time, existing small-scale maintenance devices lack convenience and cannot complete the entire maintenance process within an independent organization, which will result in extremely low efficiency when maintaining parts. Therefore, it is necessary to invent a mobile maintenance device based on auto parts manufacturing to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a mobile maintenance device based on automobile parts manufacturing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mobile maintenance device for automobile spare parts manufacturing, comprising a universal wheel, a base plate fixedly installed on the top of the universal wheel, a handle fixedly installed on the right side of the base plate, a maintenance box fixedly installed on the top of the base plate, a sealed glass door rotatably installed on the front of the maintenance box, and an oiling mechanism, a cleaning component, and a lifting component fixedly installed inside the maintenance box.

[0006] The oiling mechanism comprises an oil spraying assembly and a processing assembly, and the processing assembly is arranged at the bottom of the oil spraying assembly.

[0007] Preferably, the oil injection assembly includes an oil storage tank, the oil storage tank is fixedly installed on the back of the maintenance box, a water pump 1 is fixedly installed inside the oil storage tank, an oil extraction pipe is fixedly installed on the back of the water pump 1, an oil delivery pipe 1 is fixedly installed on the front of the water pump 1, a transfer box is fixedly installed on the end of the oil delivery pipe 1 away from the water pump 1, an oil delivery pipe 2 is fixedly installed on the front of the transfer box, a nozzle fixing plate is fixedly installed inside the maintenance box, and an oil spray head is fixedly installed on the bottom of the nozzle fixing plate, so as to facilitate oil spraying on the surface of spare parts through the oil injection assembly.

[0008] Preferably, the back of the transfer box is fixedly mounted to the inner side of the back of the maintenance box, holes are provided at corresponding positions of the nozzle fixing plate and the second oil pipeline, and the second oil pipeline is fixedly mounted inside the hole opened inside the nozzle fixing plate, and the bottom of the second oil pipeline is fixedly mounted to the top of the oil spray head, so as to facilitate the use of the oil spray head for oil spraying under normal conditions.

[0009] Preferably, the processing component includes an external plate, which is fixedly installed on the left side of the maintenance box, a fan is fixedly installed on the top of the external plate, a heating rod is fixedly installed on the inner side of the top of the maintenance box, a smoothing fixing strip is fixedly installed inside the maintenance box, and a brush block is fixedly installed on the side of the smoothing fixing strip close to the oil spray head, so as to facilitate smoothing and drying of the spare parts after oil spraying through the processing component.

[0010] Preferably, holes are provided at corresponding positions of the maintenance box and the fan, and the output end of the fan is fixedly installed inside the hole provided inside the maintenance box, so that the air inside the maintenance box can be spread more evenly by the fan.

[0011] Preferably, the left side of the smoothing fixing strip is fixedly installed to the left inner side of the maintenance box, and the right side of the smoothing fixing strip is fixedly installed to the right inner side of the maintenance box, so as to facilitate evenly spreading the oil on the surface of the spare parts through the brush block.

[0012] Preferably, the cleaning component includes a water tank, which is fixedly installed on the left side of the maintenance box, a water connecting pipe is fixedly installed on the top of the water tank, a water pump 2 is fixedly installed inside the water tank, a water suction pipe is fixedly installed on the left side of the water pump 2, a water transfer pipe is fixedly installed on the right side of the water pump 2, and a water spray brush ball is fixedly installed on the top of the water transfer pipe, so as to facilitate cleaning the parts to remove dust from their surface before oiling them through the cleaning component.

[0013] Preferably, grooves are opened at corresponding positions of the maintenance box and the water transfer pipe, and the water transfer pipe is fixedly installed in the groove opened inside the maintenance box, a connecting pipe is arranged on the top of the water transfer pipe, and the connecting pipe arranged on the top of the water transfer pipe is fixedly installed inside the water spray brush ball, and the bottom of the water spray brush ball is fixedly installed on the inner side of the bottom of the maintenance box, thereby improving the cleaning efficiency.

[0014] Preferably, the lifting assembly includes a motor fixing ring, which is fixedly installed on the top of the maintenance box, a motor is fixedly installed inside the motor fixing ring, a threaded rod is fixedly installed on the bottom of the transmission shaft of the motor, a lifting plate 1 is installed on the external thread of the threaded rod, a parts fixing plate is fixedly installed on the right side of the lifting plate 1, a lifting plate 2 is fixedly installed on the right side of the parts fixing plate, and a limit rod is slidably installed inside the lifting plate 2 to facilitate the lifting of spare parts through the lifting assembly for maintenance.

[0015] Preferably, the bottom of the threaded rod is rotatably mounted on the inner side of the maintenance box, the top of the limit rod is fixedly mounted on the inner side of the top of the maintenance box, and the bottom of the limit rod is fixedly mounted on the inner side of the bottom of the maintenance box, thereby improving stability.

[0016] Compared with the prior art, the present invention provides a mobile maintenance device for automobile parts manufacturing, which has the following beneficial effects:

[0017] 1. The mobile maintenance device for automobile spare parts manufacturing has an oiling mechanism, during use, when the spare parts are to be oiled, a water pump is driven to make the oil extraction pipe draw the oil in the oil storage tank into the interior of the transfer box, and the oil is sprayed to the top of the parts through the oil spray head. The oil is evenly brushed under the action of the brush block, the heating rod is driven to generate heat, so that the interior of the maintenance box is heated up, and the fan is used to blow air into the interior of the maintenance box to spread the hot air more evenly, so that the oil on the spare parts dries quickly, thereby improving the efficiency of the processing process during the oiling of the spare parts and the service life of the spare parts.

[0018] 2. The mobile maintenance device for automobile spare parts manufacturing has a cleaning component set up. During use, before maintenance and oiling, after the spare parts are fixed, the water pump 2 is driven to make the water pump pipe start to pump water from the inside of the water tank, and then the water is sprayed from the inside of the water spray brush ball onto the parts through the water transmission pipe for brushing. After brushing clean, the parts are dried quickly with the help of the processing component, thereby realizing the functions of combining maintenance, cleaning and oiling of spare parts and improving work efficiency.

[0019] 3. The mobile maintenance device for automobile spare parts manufacturing, through the setting of the lifting assembly, drives the motor during use, so that the transmission shaft of the motor drives the threaded rod to rotate, so that the lifting plate 1 drives the part fixing plate and the lifting plate 2 to rise and fall, thereby driving the fixed spare parts to be cleaned and oiled, realizing the function of automatic maintenance of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0021] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal front structure of the maintenance box of the present invention;

[0023] Figure 3This is a schematic diagram of the back structure of the maintenance box of the present invention;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the fuel injection assembly of the present invention when viewed from above;

[0025] Figure 5 This is a schematic diagram of the top surface structure of the smoothing fixing strip of the present invention;

[0026] Figure 6 This is a schematic diagram of the top view of the cleaning assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the side structure of the lifting assembly of the present invention;

[0028] Figure 8 It is a schematic diagram of the top view of the component fixing plate and the connection of the present invention.

[0029] In the figure: 1, universal wheel; 2, bottom plate; 3, handle; 4, maintenance box; 5, sealed glass door; 6, oiling mechanism; 61, oil spraying assembly; 611, oil storage tank; 612, water pump 1; 613, oil extraction pipe; 614, oil delivery pipe 1; 615, transfer box; 616, oil delivery pipe 2; 617, nozzle fixing plate; 618, oil spraying head; 62, processing assembly; 621, external plate; 622, air machine; 623, heating rod; 624, smoothing fixing strip; 625, brush block; 7, cleaning assembly; 71, water tank; 72, water connecting pipe; 73, water pump 2; 74, water suction pipe; 75, water transmission pipe; 76, water spray brush ball; 8, lifting assembly; 81, motor fixing ring; 82, motor; 83, threaded rod; 84, lifting plate 1; 85, parts fixing plate; 86, lifting plate 2; 87, limit rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] See also Figure 1-5 The present invention provides a technical solution: a mobile maintenance device for automobile parts manufacturing, comprising a universal wheel 1, a bottom plate 2 is fixedly installed on the top of the universal wheel 1, a handle 3 is fixedly installed on the right side of the bottom plate 2, a maintenance box 4 is fixedly installed on the top of the bottom plate 2, a sealed glass door 5 is rotatably installed on the front of the maintenance box 4, and an oiling mechanism 6, a cleaning component 7, and a lifting component 8 are fixedly installed inside the maintenance box 4.

[0034] The oiling mechanism 6 includes an oil spraying assembly 61 and a processing assembly 62 . The processing assembly 62 is arranged at the bottom of the oil spraying assembly 61 .

[0035] Furthermore, the oil injection assembly 61 includes an oil storage tank 611, which is fixedly installed on the back of the maintenance box 4, a water pump 612 is fixedly installed inside the oil storage tank 611, an oil extraction pipe 613 is fixedly installed on the back of the water pump 612, an oil delivery pipe 614 is fixedly installed on the front of the water pump 612, a transfer box 615 is fixedly installed on the end of the oil delivery pipe 614 away from the water pump 612, an oil delivery pipe 2 616 is fixedly installed on the front of the transfer box 615, a nozzle fixing plate 617 is fixedly installed inside the maintenance box 4, and an oil injection head 618 is fixedly installed on the bottom of the nozzle fixing plate 617, so as to facilitate the oil injection to the surface of the spare parts through the oil injection assembly 61.

[0036] Furthermore, the back of the transfer box 615 is fixedly installed on the inner side of the back of the maintenance box 4, holes are opened at corresponding positions of the nozzle fixing plate 617 and the second oil pipe 616, and the second oil pipe 616 is fixedly installed inside the hole opened inside the nozzle fixing plate 617, and the bottom of the second oil pipe 616 is fixedly installed on the top of the oil spray head 618, so as to facilitate the use of the oil spray head 618 for oil spraying under normal conditions.

[0037] Furthermore, the processing component 62 includes an external plate 621, which is fixedly installed on the left side of the maintenance box 4. A fan 622 is fixedly installed on the top of the external plate 621, a heating rod 623 is fixedly installed on the inner side of the top of the maintenance box 4, and a smoothing fixing strip 624 is fixedly installed inside the maintenance box 4. A brush block 625 is fixedly installed on the side of the smoothing fixing strip 624 close to the oil spray head 618, so as to facilitate smoothing and drying of the spare parts after oil spraying through the processing component 62.

[0038] Furthermore, holes are provided at corresponding positions of the maintenance box 4 and the fan 622 , and the output end of the fan 622 is fixedly installed inside the hole provided inside the maintenance box 4 , so that the air inside the maintenance box 4 can be spread more evenly through the fan 622 .

[0039] Furthermore, the left side of the evenly applied fixing strip 624 is fixedly installed to the left inner side of the maintenance box 4, and the right side of the evenly applied fixing strip 624 is fixedly installed to the right inner side of the maintenance box 4, so as to facilitate evenly applying the oil on the surface of the spare parts through the brush block 625.

[0040] Embodiment 2:

[0041] See also Figure 6 In combination with the first embodiment, it is further obtained that the cleaning component 7 includes a water tank 71, the water tank 71 is fixedly installed on the left side of the maintenance box 4, a water receiving pipe 72 is fixedly installed on the top of the water tank 71, a water pump 73 is fixedly installed inside the water tank 71, a water suction pipe 74 is fixedly installed on the left side of the water pump 73, a water transfer pipe 75 is fixedly installed on the right side of the water pump 73, and a water spray brush ball 76 is fixedly installed on the top of the water transfer pipe 75, so that the cleaning component 7 can be used to clean the parts before oiling to remove dust from their surface.

[0042] Furthermore, grooves are opened at corresponding positions of the maintenance box 4 and the water transfer pipe 75, and the water transfer pipe 75 is fixedly installed inside the groove opened inside the maintenance box 4, a connecting pipe is provided on the top of the water transfer pipe 75, and the connecting pipe provided on the top of the water transfer pipe 75 is fixedly installed inside the water spray brush ball 76, and the bottom of the water spray brush ball 76 is fixedly installed on the inner side of the bottom of the maintenance box 4, thereby improving the cleaning efficiency.

[0043] Embodiment three:

[0044] See also Figure 7-8 , and combined with the first embodiment, it is further obtained that the lifting assembly 8 includes a motor fixing ring 81, the motor fixing ring 81 is fixedly installed on the top of the maintenance box 4, the motor 82 is fixedly installed inside the motor fixing ring 81, the bottom of the transmission shaft of the motor 82 is fixedly installed with a threaded rod 83, the external thread of the threaded rod 83 is installed with a lifting plate 1 84, the right side of the lifting plate 1 84 is fixedly installed with a parts fixing plate 85, the right side of the parts fixing plate 85 is fixedly installed with a lifting plate 2 86, and the internal sliding installation of the lifting plate 2 86 is a limit rod 87, which is convenient for lifting and lowering parts through the lifting assembly 8 for maintenance.

[0045] Furthermore, the bottom of the threaded rod 83 is rotatably mounted on the inner side of the maintenance box 4, the top of the limit rod 87 is fixedly mounted on the inner side of the top of the maintenance box 4, and the bottom of the limit rod 87 is fixedly mounted on the inner side of the bottom of the maintenance box 4, thereby improving stability.

[0046] In actual operation, when the device is used, the sealed glass door 5 is opened, and the spare parts are placed inside the part fixing plate 85, and the sealed glass door 5 is closed. At this time, the spare parts are maintained, and the water pump 2 73 is driven to make the water pumping pipe 74 start to pump water from the inside of the water tank 71. The pumped water passes through the water transfer pipe 75 and is sprayed onto the parts through the water spray brush ball 76. At this time, the motor 82 is driven to make the transmission shaft of the motor 82 drive the threaded rod 83 to rotate, so that the lifting plate 1 84 drives the part fixing plate 85 up and down on the surface of the water spray brush ball 76 under the limit of the lifting plate 2 86 and the limit rod 87, so that the surface of the spare parts becomes cleaner. When the parts are cleaned, the heating rod 623 is driven to heat it, and the maintenance box 4 is heated. Heat is generated inside, and the fan 622 is driven at this time to blow air into the maintenance box 4, so that the hot air inside the maintenance box 4 is blown more evenly, so that the parts dry faster. After the parts are dried, the motor 82 is then driven to make the part fixing plate 85 rise. After reaching the bottom of the oil spraying assembly 61, the water pump 1 612 is driven to make the oil extraction pipe 613 extract oil, and after passing through the transfer box 615 and the oil delivery pipe 2 616, it is sprayed from the inside of the oil spray head 618 to the surface of the spare parts. At this time, the motor 82 is driven again to make the part fixing plate 85 drive back and forth on the inner side of the brush block 625 to brush the oil evenly on the surface of the spare parts. The fan 622 and the heating rod 623 are driven again to dry the oil. After the maintenance is completed, the spare parts can be taken out.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A mobile maintenance device for automobile parts manufacturing, comprising a universal wheel (1), characterized in that: A bottom plate (2) is fixedly mounted on the top of the universal wheel (1), a handle (3) is fixedly mounted on the right side of the bottom plate (2), a maintenance box (4) is fixedly mounted on the top of the bottom plate (2), a sealed glass door (5) is rotatably mounted on the front of the maintenance box (4), and an oiling mechanism (6), a cleaning component (7), and a lifting component (8) are fixedly mounted inside the maintenance box (4); The oiling mechanism (6) comprises an oil spraying assembly (61) and a processing assembly (62), wherein the processing assembly (62) is arranged at the bottom of the oil spraying assembly (61).

2. The mobile maintenance device for automobile parts manufacturing according to claim 1 is characterized in that: The oil injection assembly (61) comprises an oil storage tank (611), the oil storage tank (611) is fixedly mounted on the back of the maintenance box (4), a water pump (612) is fixedly mounted inside the oil storage tank (611), an oil extraction pipe (613) is fixedly mounted on the back of the water pump (612), an oil delivery pipe (614) is fixedly mounted on the front of the water pump (612), a transfer box (615) is fixedly mounted on the end of the oil delivery pipe (614) away from the water pump (612), an oil delivery pipe (616) is fixedly mounted on the front of the transfer box (615), a nozzle fixing plate (617) is fixedly mounted inside the maintenance box (4), and an oil injection head (618) is fixedly mounted on the bottom of the nozzle fixing plate (617).

3. The mobile maintenance device for automobile parts manufacturing according to claim 2 is characterized in that: The back of the transfer box (615) is fixedly mounted on the inner side of the back of the maintenance box (4), holes are opened at corresponding positions of the nozzle fixing plate (617) and the second oil delivery pipe (616), and the second oil delivery pipe (616) is fixedly mounted inside the hole opened inside the nozzle fixing plate (617), and the bottom of the second oil delivery pipe (616) is fixedly mounted on the top of the oil spray head (618).

4. The mobile maintenance device for automobile parts manufacturing according to claim 1 is characterized in that: The processing assembly (62) comprises an external plate (621), the external plate (621) being fixedly mounted on the left side of the maintenance box (4), a fan (622) being fixedly mounted on the top of the external plate (621), a heating rod (623) being fixedly mounted on the inner side of the top of the maintenance box (4), a smoothing fixing strip (624) being fixedly mounted inside the maintenance box (4), and a brush block (625) being fixedly mounted on the side of the smoothing fixing strip (624) close to the oil spray head (618).

5. The mobile maintenance device for automobile parts manufacturing according to claim 4 is characterized in that: The maintenance box (4) and the fan (622) are provided with holes at corresponding positions, and the output end of the fan (622) is fixedly installed inside the hole provided inside the maintenance box (4).

6. The mobile maintenance device for automobile parts manufacturing according to claim 4 is characterized in that: The left side of the smoothing fixing strip (624) is fixedly mounted to the left inner side of the maintenance box (4), and the right side of the smoothing fixing strip (624) is fixedly mounted to the right inner side of the maintenance box (4).

7. The mobile maintenance device for automobile parts manufacturing according to claim 1 is characterized in that: The cleaning assembly (7) comprises a water tank (71), the water tank (71) being fixedly mounted on the left side of the maintenance box (4), a water receiving pipe (72) being fixedly mounted on the top of the water tank (71), a second water pump (73) being fixedly mounted inside the water tank (71), a water suction pipe (74) being fixedly mounted on the left side of the second water pump (73), a water transfer pipe (75) being fixedly mounted on the right side of the second water pump (73), and a water spray brush ball (76) being fixedly mounted on the top of the water transfer pipe (75).

8. The mobile maintenance device for automobile parts manufacturing according to claim 7 is characterized in that: A groove is provided at the corresponding position of the maintenance box (4) and the water transfer pipe (75), and the water transfer pipe (75) is fixedly installed in the groove provided in the maintenance box (4). A connecting pipe is provided at the top of the water transfer pipe (75), and the connecting pipe provided at the top of the water transfer pipe (75) is fixedly installed in the inside of the water spray brush ball (76), and the bottom of the water spray brush ball (76) is fixedly installed on the inner side of the bottom of the maintenance box (4).

9. The mobile maintenance device for automobile parts manufacturing according to claim 1, characterized in that: The lifting assembly (8) comprises a motor fixing ring (81), wherein the motor fixing ring (81) is fixedly mounted on the top of the maintenance box (4), a motor (82) is fixedly mounted inside the motor fixing ring (81), a threaded rod (83) is fixedly mounted on the bottom of the transmission shaft of the motor (82), a lifting plate 1 (84) is threadedly mounted on the outside of the threaded rod (83), a parts fixing plate (85) is fixedly mounted on the right side of the lifting plate 1 (84), a lifting plate 2 (86) is fixedly mounted on the right side of the parts fixing plate (85), and a limit rod (87) is slidably mounted inside the lifting plate 2 (86).

10. The mobile maintenance device for automobile parts manufacturing according to claim 9, characterized in that: The bottom of the threaded rod (83) is rotatably mounted on the inner side of the maintenance box (4), the top of the limit rod (87) is fixedly mounted on the inner side of the top of the maintenance box (4), and the bottom of the limit rod (87) is fixedly mounted on the inner side of the bottom of the maintenance box (4).

Citation Information

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