Automatic crossing system of front frame

Abstract

The utility model provides an automatic crossing system of a front frame, which comprises an automatic crossing area main steel structure and an automatic lifting appliance upper steel structure which are arranged in a factory area space, the automatic lifting appliance upper steel structure is fixed on the automatic crossing area main steel structure, and a station automatic lifting appliance I and a station automatic lifting appliance II which are symmetrically arranged are arranged on the automatic lifting appliance upper steel structure. A first automatic lifting appliance movable safety protection net is arranged below the first station automatic lifting appliance, and a second automatic lifting appliance movable safety protection net is arranged below the second station automatic lifting appliance. An automatic crossing two-layer platform is arranged between the first station automatic lifting appliance and the second station automatic lifting appliance, and a bidirectional double-layer telescopic transplanter and a front frame supporting clamp are arranged on the automatic crossing two-layer platform. Compared with the prior art, the automatic crossing system for the front frame in the scheme has the advantages that the automatic crossing of the front frame between two production lines is realized, the automatic crossing action of the front frame is realized through the reasonable arrangement of the station automatic lifting appliance and the bidirectional double-layer telescopic transplanter, the operation is simple, and the efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, in particular to an automatic crossing system for a front frame. Background Art

[0002] Some new series of models are equipped with wide-body pickup truck frames, which are used in gasoline, diesel, automatic, manual, pure electric and other models; during the welding process of the wide-body pickup truck frame, it is necessary to weld the left and right longitudinal beam A inner and outer panel assemblies first, and then weld the left and right longitudinal beam A inner and outer panel assemblies with the front frame in combination, and then after inspection / repairing / repairing, the front frame is transferred to another welding production line through the front frame over-span system, and combined with the left and right longitudinal beam C inner and outer panel assemblies and the rear frame welded on another welding production line.

[0003] In the wide-body pickup truck frame welding production line, due to the complex structure of the front frame and the large space it occupies, the front frame over-span operation requires relatively complex operations, and there is a lot of manual participation and high labor intensity, which greatly reduces the production efficiency of the pickup truck frame and makes it difficult to control the qualified rate. At the same time, in the limited factory space, the equipment such as the hoist used will be greatly affected and restricted when the front frame over-span operation is realized. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an automatic front frame overpass system for solving the problem of complex operation and low efficiency of the front frame overpass process during the pickup truck frame welding process in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the technical solution of the utility model is as follows:

[0006] A front frame automatic over-span system, comprising an automatic over-span area main steel structure and an automatic hoist upper steel structure arranged in a factory space, wherein the automatic hoist upper steel structure is fixed to the automatic over-span area main steel structure, and a workstation automatic hoist 1 and a workstation automatic hoist 2 are symmetrically arranged on the automatic hoist upper steel structure, an automatic hoist movable safety guard net 1 is arranged below the workstation automatic hoist 1, and an automatic hoist movable safety guard net 2 is arranged below the workstation automatic hoist 2;

[0007] An automatic cross-over two-layer platform is arranged between the workstation automatic spreader 1 and the workstation automatic spreader 2, and a bidirectional double-layer telescopic transplanter and a front frame supporting fixture are arranged on the automatic cross-over two-layer platform.

[0008] Optionally, a factory crane beam, a factory track single-beam crane, and a welding line main pipeline are provided at the upper end of the upper steel structure of the automatic hoist, and a hoist track is provided below the automatic hoist 2 at the workstation.

[0009] Optionally, the automatic cross-over two-story platform includes a platform panel and a platform bearing beam for supporting the platform panel, an inspection platform is provided on both lateral sides of the platform panel, a guardrail is provided on the side of the inspection platform away from the platform panel, a maintenance entrance is provided on the guardrail, and a telescopic transplanter low guardrail is provided on both longitudinal sides of the platform panel.

[0010] Optionally, the bidirectional double-layer telescopic transplanter includes a bottom base plate, a bottom drive, a sliding base plate, a primary telescopic arm, a secondary telescopic arm and a telescopic drive, wherein a walking guide rail and a walking rack are arranged on the bottom base plate, a limited position seat is arranged at the end of the bottom base plate, and double-position locking cylinders are arranged on both sides of the bottom base plate; the bottom drive is connected with a control drag chain and a driving gear meshing with the walking rack, and the bottom drive is fixed on the sliding base plate, and the sliding base plate can be driven by the bottom drive to slide along the walking guide rail on the bottom base plate; a track group and a track group transmission shaft are arranged on the sliding base plate, and the telescopic drive is used to drive the secondary telescopic arm to slide along the primary telescopic arm, and a telescopic arm detection device is arranged on the primary telescopic arm.

[0011] Optionally, the frame supporting clamp includes a connecting base plate and a clamp base plate, the connecting base plate is fixed to the main steel structure of the automatic crossing area, two clamp front supports and two clamp rear supports are arranged on the clamp base plate, the clamp front support is arranged with a clamp front support block, the clamp rear support is arranged with a clamp rear support block, one side of the clamp front support block and the clamp rear support block are provided with a guide block, and two automatic hoist positioning seats are arranged in the middle of the clamp base plate.

[0012] Optionally, the workstation automatic hoist 1 and the workstation automatic hoist 2 both include an upper frame and a lower frame, a driving lifting mechanism and an upper and lower locking mechanism are arranged between the upper frame and the lower frame, and a plurality of lower hoists are arranged below the lower frame.

[0013] Optionally, the driving lifting mechanism includes a lifting motor, an upper bottom frame connecting plate and four belt fixing pulleys, the lifting motor is connected to a reducer, the output end of the reducer is connected to the left and right side transmission shafts, and the bottom frame connecting plate is fixed on the left and right side transmission shafts; a plurality of side pulleys are provided on the left and right side transmission shafts, a four-way belt is provided between the side pulleys and the belt fixing pulley, and a lower belt connecting bracket and a lower belt locking screw are provided at the lower end of the belt fixing pulley.

[0014] Optionally, the upper steel structure of the automatic hoist includes a plurality of main cross beams and a plurality of main longitudinal beams fixed vertically to each other, an upper corbel is provided between the main cross beams and the main longitudinal beams, and a plurality of supporting cross beams are provided between the main longitudinal beams; two maintenance platforms are provided at the lower ends of the supporting cross beams, and a connecting platform is provided between the two maintenance platforms; steel structure guardrails are provided around the maintenance platforms, a plurality of lower longitudinal beams and a plurality of lower cross beams are provided below the maintenance platforms, and a lower corbel is provided between the lower longitudinal beams and the lower cross beams.

[0015] Optionally, the main steel structure of the automatic crossing area includes two middle columns and four side columns, a track beam is arranged between the lower cross beams, a second-layer platform corbel is arranged on the middle column, and a hoisting track is arranged on the track beam.

[0016] Optionally, the automatic hoist movable safety guard net 1 and the automatic hoist movable safety guard net 2 both include a safety guard net body and a safety guard net telescopic cylinder, a rolling bearing is arranged below the safety guard net body, and the safety guard net telescopic cylinder is provided with a cylinder front support and a cylinder rear support.

[0017] The above-mentioned scheme for realizing the automatic crossing system of the front frame is mainly aimed at the front frame part of the wide-body pickup truck frame, and the crossing movement operation is performed between two production lines. When the automatic crossing system of the front frame is used, the front frame that has completed part of the processing is lifted by the automatic lifting device 1 of the work station or the automatic lifting device 2 of the work station, and then supported by the front frame support fixture, and moved by a two-way double-layer telescopic transplanter, so that the front frame passes through the second-layer platform, and then the automatic lifting device 2 of the work station or the automatic lifting device 1 of the work station is used to place it on the work station after the crossing. Compared with the prior art, the automatic crossing system of the front frame in this scheme realizes the automatic crossing of the front frame between the two production lines, and realizes the automatic crossing of the front frame through the reasonable arrangement of the automatic lifting device of the work station and the two-way double-layer telescopic transplanter, which is simple to operate and highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an exemplary front frame automatic crossing system of the utility model;

[0019] Figure 2 It is a structural schematic diagram of an automatic crossing second-layer platform in an exemplary front frame automatic crossing system of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a bidirectional double-layer telescopic transplanter in an exemplary front frame automatic crossing system of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a frame support fixture in an exemplary front frame automatic crossing system of the utility model;

[0022] Figure 5 It is a structural schematic diagram of an automatic lifting device for a workstation in an exemplary front frame automatic spanning system of the utility model;

[0023] Figure 6 It is a schematic structural diagram of a driving lifting mechanism in an exemplary front frame automatic crossing system of the utility model;

[0024] Figure 7 It is a structural schematic diagram of an automatic hoist upper steel structure and an automatic span-passing area main steel structure in an exemplary front frame automatic span-passing system of the utility model;

[0025] Figure 8 It is a schematic structural diagram of an automatic hoist movable safety guard net in an exemplary front frame automatic crossing system of the utility model.

[0026] The description of the reference numerals in the embodiments includes:

[0027] Automatically cross the second-floor platform 501, platform bearing beam 5011, platform panel 5012, maintenance platform 5013, guardrail 5014, telescopic transplanter low guardrail 5015, maintenance entrance 5016,

[0028] Bidirectional double-layer telescopic transplanter 502, bottom floor 50201, walking guide rail 50202, walking rack 50203, bottom drive 50204, control drag chain 50205, double-station locking cylinder 50206, limit seat 50207, sliding bottom plate 50208, track group 50209, first-level telescopic arm 50210, second-level telescopic arm 50211, telescopic drive 50212, track group transmission shaft 50213, telescopic arm detection device 50214,

[0029] Front frame support fixture 503, connecting base plate 50301, fixture base plate 50302, fixture front support 50303, fixture rear support 50304, fixture front support block 50305, guide block 50306, fixture rear support block 50307, ​​automatic hoist positioning seat 50308,

[0030] Station automatic lifting device 1 504, upper frame 50401, driving lifting mechanism 50402, lifting motor and reducer 504021, left and right side transmission shafts 504022, side pulleys 504023, upper bottom frame connecting plate 504024, belt fixing wheel 504025, four-way belt 504026, lower connecting bracket 504027, belt lower locking screw 504028, lower frame 50403, upper and lower locking mechanisms 50404, lower lifting device 50405, station automatic lifting device 2 509,

[0031] Automatic hoist upper steel structure 505, main crossbeam 50501, main longitudinal beam 50502, support crossbeam 50503, maintenance platform 50504, connecting platform 50506, steel structure guardrail 50507, lower longitudinal beam 50508, lower crossbeam 50509, lower corbel 50510, upper corbel 50511,

[0032] Automatic lifting device movable safety net 1 506, safety net body 5061, rolling bearing 5062, safety net telescopic cylinder 5063, cylinder front support 5064, cylinder rear support 5065, automatic lifting device movable safety net 2 508,

[0033] Automatic crossing area main steel structure 507, middle column 50701, side column 50702, track beam 50703, second floor platform bracket 50704,

[0034] Factory building crane beam 510, factory building track single-beam crane 511, welding line main pipeline 512, and hoisting device track 513. DETAILED DESCRIPTION

[0035] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0036] It should be understood that the utility model can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, the same reference numerals represent the same components throughout.

[0037] The specific structure of the automatic crossing system of the front frame in the utility model is shown in FIG. Figures 1 to 8 The front frame automatic over-span system comprises an automatic over-span area main steel structure 507 and an automatic hoist upper steel structure 505 arranged in the factory space, the automatic hoist upper steel structure 505 is fixed on the automatic over-span area main steel structure 507, the automatic hoist upper steel structure 505 is symmetrically arranged with a workstation automatic hoist 1 504 and a workstation automatic hoist 2 509, an automatic hoist movable safety guard net 1 506 is arranged below the workstation automatic hoist 1 504, and an automatic hoist movable safety guard net 2 508 is arranged below the workstation automatic hoist 2 509;

[0038] An automatic cross-over two-layer platform 501 is arranged between the workstation automatic hoist 1 504 and the workstation automatic hoist 2 509 , and a bidirectional double-layer telescopic transplanter 502 and a front frame supporting fixture 503 are arranged on the automatic cross-over two-layer platform 501 .

[0039] Among them, the automatic second-layer platform 501 is fixed on the main steel structure 507 of the automatic crossing area, the automatic hoist 1 504 and the automatic hoist 2 509 correspond to two workstations on the two production lines respectively, the automatic second-layer platform 501 is connected between the two workstations, the bidirectional double-layer telescopic transplanter 502 and the front frame support clamp 503 cooperate to complete the crossing operation of the front frame at the two workstations on the two production lines.

[0040] In actual implementation, when the automatic front frame overspan system is used, the front frame that has been partially processed is lifted by the automatic lifting device 1 504 or the automatic lifting device 2 509, supported by the front frame support fixture 503, and moved by the two-way double-layer telescopic transplanter 502, so that the front frame passes through the second-layer platform, and then placed on the station after overspan by the automatic lifting device 2 509 or the automatic lifting device 1 504. Due to the influence and restrictions of the 6-meter spacing of the columns of the original old factory building, the height of the traveling beam track of only 7.5 meters, the height of the welding smoke system and the main pipeline, and the automatic PICK lifting device of the frame, a two-layer steel structure, a two-way double-layer telescopic transplanter 502, and independent automatic lifting devices are set up in each of the two stations in this limited space, so as to achieve the purpose of automatic overspan of the front frame.

[0041] In some embodiments, the upper end of the automatic hoist upper steel structure 505 is provided with a factory crane beam 510, a factory rail single-beam crane 511, and a welding line main pipeline 512, and a hoist rail 513 is provided below the automatic hoist 2 509 of the workstation. For example, Figure 1 As shown, the factory crane beam 510, the factory track single-beam crane 511, and the welding line main pipeline 512 are all arranged at the upper end of the automatic hoist upper steel structure 505, which can make full use of the original structure of the old factory. The hoist track 513 is arranged below the automatic hoist 2 509 at the workstation, that is, at the workstation of the production line, to facilitate the transmission of spare parts on the production line.

[0042] In some embodiments, the automatic cross-over two-story platform 501 includes a platform panel 5012 and a platform bearing beam 5011 for supporting the platform panel 5012, a maintenance platform 5013 is provided on both lateral sides of the platform panel 5012, a guardrail 5014 is provided on the side of the maintenance platform 5013 away from the platform panel 5012, a maintenance entrance 5016 is provided on the guardrail 5014, and a telescopic transplanter low guardrail 5015 is provided on both longitudinal sides of the platform panel 5012. For example, Figure 2As shown, the platform bearing beam 5011 is fixed on the upper steel structure 505 of the automatic spreader to realize the automatic determination of the position of the second-layer platform 501 across the platform. The maintenance platform 5013 is convenient for maintenance of the bidirectional double-layer telescopic transplanter 502. The maintenance entrance 5016 is convenient for workers to enter the maintenance platform 5013. The guardrail 5014 is convenient for protecting the front frame and maintenance personnel.

[0043] In some embodiments, the bidirectional double-layer telescopic transplanter 502 includes a bottom base plate 50201, a bottom drive 50204, a sliding base plate 50208, a first-level telescopic arm 50210, a second-level telescopic arm 50211 and a telescopic drive 50212, the bottom base plate 50201 is provided with a walking guide rail 50202 and a walking rack 50203, the end of the bottom base plate 50201 is provided with a limited position seat 50207, and both sides of the bottom base plate 50201 are respectively provided with a double-station locking cylinder 50206; the bottom drive 50204 is connected to a control drag chain 5020 5 and a driving gear meshing with the traveling rack 50203, the bottom drive 50204 is fixed on the sliding base plate 50208, and the sliding base plate 50208 can be driven by the bottom drive 50204 to slide along the traveling guide rail 50202 on the bottom base plate 50201; the sliding base plate is provided with a track group 50209 and a track group transmission shaft 50213, the telescopic drive 50212 is used to drive the secondary telescopic arm 50211 to slide along the primary telescopic arm 50210, and the primary telescopic arm 50210 is provided with a telescopic arm detection device 50214. For example, Figure 3 As shown, the bottom drive 50204 realizes the movement of the bottom base plate 50201 by cooperating with the driving gear and the walking rack 50203. The bottom drive 50204 can drive the sliding base plate 50208 to slide on the bottom base plate 50201 along the walking guide rail 50202. The telescopic drive 50212 is used to drive the secondary telescopic arm 50211 to slide along the primary telescopic arm 50210, so that the bidirectional double-layer telescopic transplanter 502 can realize bidirectional telescopic movement.

[0044] In some embodiments, the frame support fixture includes a connecting base plate 50301 and a fixture base plate 50302, wherein the connecting base plate 50301 is fixed to the main steel structure 507 of the automatic spanning area, and the fixture base plate 50302 is provided with two fixture front supports 50303 and two fixture rear supports 50304, wherein the fixture front supports 50303 are provided with fixture front support blocks 50305, and the fixture rear supports 50304 are provided with fixture rear support blocks 50307, ​​and guide blocks 50306 are provided on one side of the fixture front support blocks 50305 and the fixture rear support blocks 50307, ​​and two automatic hoist positioning seats 50308 are provided in the middle of the fixture base plate 50302. For example, Figure 4 As shown, the frame support fixture is guided and positioned by the guide block and the automatic hoist positioning seat 50308, and then the front support block and the rear support block are used for stable support, so that the front frame can be moved across.

[0045] In some embodiments, the automatic lifting device 1 504 and the automatic lifting device 2 509 both include an upper frame 50401 and a lower frame 50403, a driving lifting mechanism 50402 and an upper and lower locking mechanism 50404 are arranged between the upper frame 50401 and the lower frame 50403, and a plurality of lower lifting devices 50405 are arranged below the lower frame 50403. For example, Figure 5 As shown, the front frame can be lifted at different positions by a plurality of lower hoists 50405, the lifted front frame can be moved up and down by driving the lifting mechanism 50402, and the upper frame 50401 and the lower frame 50403 can be locked by the upper and lower locking mechanisms 50404 after the front frame is lifted to a certain height, so as to stabilize the up and down movement process of the front frame.

[0046] In some embodiments, the driving lifting mechanism 50402 includes a lifting motor, an upper bottom frame connecting plate 504024 and four belt fixing wheels 504025. The lifting motor is connected to a reducer, and the output end of the reducer is connected to the left and right transmission shafts 504022. The bottom frame connecting plate is fixed to the left and right transmission shafts 504022. The left and right transmission shafts 504022 are provided with a plurality of side pulleys 504023, and a four-way belt 504026 is provided between the side pulleys 504023 and the belt fixing wheel 504025. The lower end of the belt fixing wheel 504025 is provided with a lower belt connecting bracket 504027 and a lower belt locking screw 504028. For example, Figure 6 As shown, the lifting mechanism 50402 is driven by the lifting motor and the reducer 504021 to rotate the left and right drive shafts 504022, and then the four-way belt 504026 is used for transmission to realize the lifting of the lower bottom frame.

[0047] In some embodiments, the upper steel structure 505 of the automatic hoist includes a plurality of main cross beams 50501 and a plurality of main longitudinal beams 50502 fixed vertically to each other, an upper corbel 50511 is provided between the main cross beams 50501 and the main longitudinal beams 50502, and a plurality of supporting cross beams 50503 are provided between the main longitudinal beams 50502; two maintenance platforms 50504 are provided below the supporting cross beams 50503, and a connecting platform 50506 is provided between the two maintenance platforms 50504; steel structure guardrails 50507 are provided around the maintenance platforms 50504, a plurality of lower longitudinal beams 50508 and a plurality of lower cross beams 50509 are provided below the maintenance platforms 50504, and a lower corbel 50510 is provided between the lower longitudinal beams 50508 and the lower cross beams 50509. For example, Figure 7 As shown, the upper steel structure 505 of the automatic spreader is constructed by a plurality of main cross beams 50501 and a plurality of main longitudinal beams 50502, and the upper steel structure 505 of the automatic spreader is reinforced by a plurality of supporting cross beams 50503; the maintenance platform 50504 facilitates the inspection and maintenance of various structural parts in the system, and a plurality of lower cross beams 50509 facilitate the connection with the main steel structure 507 of the automatic cross-span area.

[0048] In some embodiments, the main steel structure 507 of the automatic crossing area includes two middle columns 50701 and four side columns 50702, a track beam 50703 is arranged between the lower beams 50509, a second-layer platform corbel 50704 is arranged on the middle column 50701, and a hoisting track 513 is arranged on the track beam 50703. For example, Figure 7 As shown, the overall support of the system is achieved by two middle columns 50701 and four side columns 50702, and the track beam 50703 facilitates the setting of the hanger track 513.

[0049] In some embodiments, the automatic hoist movable safety net 1 506 and the automatic hoist movable safety net 2 508 both include a safety net body 5061 and a safety net telescopic cylinder 5063, a rolling bearing 5062 is disposed below the safety net body 5061, and the safety net telescopic cylinder 5063 is provided with a cylinder front support 5064 and a cylinder rear support 5065. For example, Figure 8 As shown, the front support 5064 and the rear support 5065 of the cylinder facilitate the installation of the cylinder, and the telescopic cylinder 5063 of the safety net can facilitate the movement of the safety net body 5061, so as to better protect the automatic lifting device 1 504 and the automatic lifting device 2 508 of the work station.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A front frame automatic crossing system, characterized by: It comprises an automatic spanning area main steel structure and an automatic hoist upper steel structure arranged in the factory space, the automatic hoist upper steel structure is fixed on the automatic spanning area main steel structure, the automatic hoist upper steel structure is symmetrically arranged with a workstation automatic hoist 1 and a workstation automatic hoist 2, an automatic hoist movable safety guard net 1 is arranged below the workstation automatic hoist 1, and an automatic hoist movable safety guard net 2 is arranged below the workstation automatic hoist 2; An automatic cross-over two-layer platform is arranged between the workstation automatic spreader 1 and the workstation automatic spreader 2, and a bidirectional double-layer telescopic transplanter and a front frame supporting fixture are arranged on the automatic cross-over two-layer platform.

2. The front frame automatic crossing system according to claim 1, characterized in that: The upper end of the upper steel structure of the automatic hoist is provided with a factory crane beam, a factory track single-beam crane, and a welding line main pipeline, and a hoist track is provided below the automatic hoist 2 at the workstation.

3. The front frame automatic crossing system according to claim 1, characterized in that: The automatic cross-over two-story platform includes a platform panel and a platform bearing beam for supporting the platform panel, a maintenance platform is arranged on both lateral sides of the platform panel, a guardrail is arranged on the side of the maintenance platform away from the platform panel, a maintenance entrance is arranged on the guardrail, and a telescopic transplanter low guardrail is arranged on both longitudinal sides of the platform panel.

4. The front frame automatic crossing system according to claim 1, characterized in that: The bidirectional double-layer telescopic transplanter includes a bottom base plate, a bottom drive, a sliding base plate, a primary telescopic arm, a secondary telescopic arm and a telescopic drive. A walking guide rail and a walking rack are arranged on the bottom base plate. A limited position seat is arranged at the end of the bottom base plate. Double-station locking cylinders are arranged on both sides of the bottom base plate respectively. The bottom drive is connected with a control drag chain and a driving gear meshing with the walking rack. The bottom drive is fixed on the sliding base plate, and the sliding base plate can be driven by the bottom drive to slide along the walking guide rail on the bottom base plate. A track group and a track group transmission shaft are arranged on the sliding base plate. The telescopic drive is used to drive the secondary telescopic arm to slide along the primary telescopic arm. A telescopic arm detection device is arranged on the primary telescopic arm.

5. The front frame automatic crossing system according to claim 1, characterized in that: The frame support clamp includes a connecting base plate and a clamp base plate, the connecting base plate is fixed on the main steel structure of the automatic crossing area, two clamp front supports and two clamp rear supports are arranged on the clamp base plate, the clamp front support is arranged with a clamp front support block, the clamp rear support is arranged with a clamp rear support block, one side of the clamp front support block and the clamp rear support block are both arranged with a guide block, and two automatic hoist positioning seats are arranged in the middle of the clamp base plate.

6. The front frame automatic crossing system according to claim 1, characterized in that: The workstation automatic hoist 1 and the workstation automatic hoist 2 both include an upper frame and a lower frame, a driving lifting mechanism and an upper and lower locking mechanism are arranged between the upper frame and the lower frame, and a plurality of lower hoists are arranged below the lower frame.

7. The front frame automatic crossing system according to claim 6, characterized in that: The driving lifting mechanism includes a lifting motor, an upper bottom frame connecting plate and four belt fixing wheels, the lifting motor is connected to a reducer, the output end of the reducer is connected to the left and right side transmission shafts, the bottom frame connecting plate is fixed on the left and right side transmission shafts; a plurality of side pulleys are arranged on the left and right side transmission shafts, a four-way belt is arranged between the side pulleys and the belt fixing wheel, and a lower belt connecting bracket and a lower belt locking screw are arranged at the lower end of the belt fixing wheel.

8. The front frame automatic crossing system according to claim 2, characterized in that: The upper steel structure of the automatic hoist includes a plurality of main cross beams and a plurality of main longitudinal beams fixed vertically to each other, an upper corbel is arranged between the main cross beams and the main longitudinal beams, and a plurality of supporting cross beams are arranged between the main longitudinal beams; two maintenance platforms are arranged at the lower ends of the supporting cross beams, and a connecting platform is arranged between the two maintenance platforms; steel structure guardrails are arranged around the maintenance platforms, a plurality of lower longitudinal beams and a plurality of lower cross beams are arranged below the maintenance platforms, and a lower corbel is arranged between the lower longitudinal beams and the lower cross beams.

9. The front frame automatic crossing system according to claim 8, characterized in that: The main steel structure of the automatic crossing area includes two middle columns and four side columns. Track beams are arranged between the lower beams. Second-layer platform corbels are arranged on the middle columns. Hoist tracks are arranged on the track beams.

10. The automatic crossing system for the front frame according to any one of claims 1 to 9, characterized in that: The automatic hoist movable safety guard net 1 and the automatic hoist movable safety guard net 2 both include a safety guard net body and a safety guard net telescopic cylinder. A rolling bearing is arranged below the safety guard net body, and the safety guard net telescopic cylinder is provided with a cylinder front support and a cylinder rear support.

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