CN219341645U

CN219341645U - Routing structure of three-stage portal forklift and three-stage portal forklift

Info

Publication number: CN219341645U
Application number: CN202320298373.6U
Authority: CN
Inventors: 吕朝顺; 唐露; 陆上英
Original assignee: Multiway Robotics Shenzhen Co Ltd
Current assignee: Multiway Robotics Shenzhen Co Ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-07-14
Anticipated expiration: 2033-02-15

Abstract

The utility model provides a wiring structure of a three-stage portal forklift and the three-stage portal forklift, wherein the wiring structure only comprises an electric cabinet, a communication cable, a first pulley assembly, a first wire clamp, a second pulley assembly and a wire transferring box; wherein, the line transferring box is arranged on the fork frame; the first pulley assembly is arranged on a lifting rod of the fork frame lifting control middle cylinder device; the first wire clamp and the second wire clamp are arranged on a base of the fork frame lifting control middle cylinder device; the second pulley assembly is arranged on a top cross beam of a middle door frame of the three-stage door frame; by means of the first pulley assembly, the second pulley assembly, the first wire clamp and the second wire clamp, when the three-stage portal and the fork frame are unfolded, communication cables among the electric cabinet, the second pulley assembly, the second wire clamp, the first pulley assembly and the wire rotating box cannot be stacked in a clustered mode.

Description

Routing structure of three-stage portal forklift and three-stage portal forklift

Technical Field

The utility model relates to the technical field of forklifts, in particular to a wiring structure of a three-stage portal forklift and the three-stage portal forklift.

Background

The unmanned repacking of current fork truck needs to install a lot of sensors and camera additional on lifting structure, so have more electric wires to need to lift along with the yoke, especially to tertiary portal fork truck, the wiring degree of difficulty is high, the three-stage fork truck of prior art walks the line mode and all uses tow chain to walk line and take-up reel to walk the line usually, adopts tow chain and take-up reel's mode to standardize the mode of walking the line, and is higher to fork truck overall structure design requirement, leads to the degree of difficulty that technical scheme implemented than great, fork truck assembly is inconvenient.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

The utility model provides a wiring structure of a three-stage portal forklift and the three-stage portal forklift, and aims to solve the technical problems described in the background art of the wiring of the traditional three-stage portal forklift.

The technical scheme of the utility model is as follows:

the utility model provides a wiring structure of a three-stage portal forklift, which comprises a forklift body, a three-stage portal arranged on the front side of the forklift body, a fork frame arranged on an inner portal of the three-stage portal in a lifting manner, and fork frame lifting control middle cylinder devices arranged on the rear side of the fork frame and fixedly connected with the bottoms of the inner portals on the left side and the right side, wherein the wiring structure comprises an electric cabinet, a communication cable, a first pulley assembly, a first wire clamp, a second pulley assembly and a wire transferring box;

the line turning box is arranged on the fork frame; the first pulley assembly is arranged on a lifting rod of the fork frame lifting control middle cylinder device; the first wire clamp and the second wire clamp are arranged on a base of the fork frame lifting control middle cylinder device; the second pulley assembly is arranged at the top end of a right portal column of a middle portal of the three-stage portal; the electric cabinet is arranged on an outer door frame of the three-stage door frame above the forklift body; one end of the communication cable is connected into the electric cabinet, and the other end of the communication cable is connected into the wire transferring box through the second pulley assembly, the second wire clamp, the first wire clamp and the first pulley assembly in sequence.

In an optional embodiment of the first aspect of the present utility model, the routing structure further includes a third wire clip and a fourth wire clip, a first auxiliary beam is disposed between the top cross beam of the middle door frame and the left door frame upright and the right door frame upright of the outer door frame between the electric cabinet, and the fourth wire clip is mounted on the first auxiliary beam through an auxiliary bracket; the wire inlet of the wire rotating box is provided with the third wire clamp; the other end of the communication cable sequentially passes through the fourth wire clamp, the second pulley assembly, the second wire clamp, the first pulley assembly and the third wire clamp to be connected into the wire transferring box.

In an optional embodiment of the first aspect of the present utility model, a left portal column and a right portal column of the outer portal are respectively provided with a first oil cylinder and a second oil cylinder, a telescopic rod of the first oil cylinder is connected with a left end of the top cross beam of the middle portal frame, and a telescopic rod of the second oil cylinder is connected with a right end of the top cross beam of the middle portal frame;

the left end and the right end of the first auxiliary beam are respectively provided with a first fixed pin shaft and a second fixed pin shaft, the top end of the left portal stand column of the middle portal and the top end of the right portal stand column are respectively provided with a first chain wheel assembly and a second chain wheel assembly, a first driving chain is connected to the first fixed pin shaft, and the first driving chain bypasses the first chain wheel assembly to extend downwards and is connected with the lower half part of the left portal stand column of the inner portal; the second fixed pin shaft is connected with a second driving chain, and the second driving chain bypasses the second chain wheel assembly to extend downwards and is connected with the lower half part of the right portal stand column of the inner portal.

In an optional implementation manner of the first aspect of the present utility model, a second auxiliary beam is disposed between the middle part of the left portal column and the middle part of the right portal column of the inner portal, and a third fixed pin shaft and a fourth fixed pin shaft are disposed on the second auxiliary beam at intervals; the left side and the right side of the lifting rod of the fork frame lifting control middle cylinder device are respectively provided with a third chain wheel assembly and a fourth chain wheel assembly, and a third driving chain is connected to the third fixed pin shaft; the third driving chain bypasses the third chain wheel assembly and is connected with the fork frame, and a fourth driving chain is connected to the fourth fixed pin shaft; the fourth drive chain bypasses the fourth chain wheel assembly and is connected with the fork frame.

In an alternative embodiment of the first aspect of the present utility model, the second pulley assembly includes a hanging plate, a first clamping plate, a second clamping plate, and a third clamping plate that are spaced apart and vertically disposed on the hanging plate, a first pulley disposed between the first clamping plate and the second clamping plate through a rotation shaft, and a second pulley disposed between the second clamping plate and the third clamping plate through a rotation shaft.

In an alternative embodiment of the first aspect of the present utility model, the second sprocket assembly includes a fixed block disposed on a top end of a right mast of the middle mast, a sprocket disposed on the fixed block through a rotation shaft, and the hanging plate of the second pulley assembly is disposed beside the sprocket side by side through an inverted L-shaped connection bracket.

In an optional embodiment of the first aspect of the present utility model, the fork frame includes a lifting plate, and a left fork leg and a right fork leg that are disposed on the lifting plate at intervals, and a cargo sensing photoelectric sensor is disposed on the lifting plate between the left fork leg and the right fork leg, and a signal wire of the cargo sensing photoelectric sensor is connected to the wire transferring box.

In an optional implementation manner of the first aspect of the present utility model, left and right sides of the bottom of the front end of the forklift body extend forward to form a left front road wheel supporting leg and a right front road wheel supporting leg, a hollow is formed in the left fork leg to form a first cavity for accommodating the left front road wheel supporting leg, and a second cavity for accommodating the right front road wheel supporting leg is formed in the right fork leg to form a hollow.

In an optional implementation manner of the first aspect of the present utility model, a left fork leg approaching the identification photoelectric sensor is provided at a front end of the first cavity inside the left fork leg, a first wiring groove is provided on a right side surface of the left fork leg, and the first wiring groove is used for guiding a signal wiring of the left fork leg approaching the identification photoelectric sensor to pass through a bottom of the lifting plate and then be connected to the line turning box; the inside of right fork leg the front end of second cavity is provided with right fork leg and supports near identification photoelectric sensor, be provided with the second wiring groove on the left surface of right fork leg, the second wiring groove is used for guiding right fork leg supports near identification photoelectric sensor's signal wiring and passes through behind the bottom of lifter plate the line box turns.

The utility model provides a three-stage portal forklift, which comprises a forklift body, three-stage portal frames arranged on the front side of the forklift body, a fork frame arranged on an inner portal of the three-stage portal frame in a lifting manner, fork frame lifting control middle cylinder devices arranged on the rear side of the fork frame and fixedly connected with the bottoms of the inner portal frames on the left side and the right side, and a line transfer box arranged on the fork frame; a first pulley assembly mounted on a lifting rod of the fork frame lifting control middle cylinder device; a first wire clamp and a second wire clamp arranged on a base of the fork frame lifting control middle cylinder device; the second pulley assembly is arranged at the top end of the right portal column of the middle portal of the three-stage portal; electric cabinets arranged on a left portal stand column and a right portal stand column of an outer portal of the three-stage portal above the forklift body; and one end of the communication cable is connected into the electric cabinet, and the other end of the communication cable is connected into the cable transferring box through the second pulley assembly, the second wire clamp, the first wire clamp and the first pulley assembly in sequence.

The beneficial effects are as follows: the utility model provides a wiring structure of a three-stage portal forklift and the three-stage portal forklift, wherein the wiring structure only comprises an electric cabinet, a communication cable, a first pulley assembly, a first wire clamp, a second pulley assembly and a wire transferring box; wherein, the line transferring box is arranged on the fork frame; the first pulley assembly is arranged on a lifting rod of the fork frame lifting control middle cylinder device; the first wire clamp and the second wire clamp are arranged on a base of the fork frame lifting control middle cylinder device; the second pulley assembly is arranged on a top cross beam of a middle door frame of the three-stage door frame; by means of the first pulley assembly, the second pulley assembly, the first wire clamp and the second wire clamp, when the three-stage portal and the fork frame are unfolded, communication cables among the electric cabinet, the second pulley assembly, the second wire clamp, the first pulley assembly and the wire rotating box cannot be stacked in a clustered mode.

Drawings

Fig. 1 is a schematic diagram of a routing structure on a three-stage gantry forklift according to a first view angle of the present utility model.

Fig. 2 is a schematic structural view of the rear side of a fork carriage of a three-stage portal forklift of the present utility model.

FIG. 3 is a schematic view of a routing structure on a three-stage gantry forklift according to a second view of the present utility model;

fig. 4 is an enlarged view of the area a in fig. 1.

Fig. 5 is an enlarged view of region B of fig. 2.

Fig. 6 is an enlarged view of the region D in fig. 3.

Fig. 7 is an enlarged view of the area E in fig. 3.

Fig. 8 is an enlarged view of region F in fig. 1.

Fig. 9 is an enlarged view of region C of fig. 2.

Fig. 10 is a schematic view of a second pulley assembly mounting structure according to the present utility model.

Fig. 11 is a schematic diagram of the bottom structure of a three-stage mast forklift of the present utility model.

The reference numerals are as follows:

10-forklift body; 20-three stages of door frames; 30-an inner door frame; 40-fork carriage; 50-a fork frame lifting control middle cylinder device; 60-an electric cabinet; a 70-communication cable; 80-a first pulley assembly; 90-a first wire clip; 100-a second wire clip; 110-a second pulley assembly; 120-a wire transferring box; 130-a base; 510-middle portal; 520-outer door frame; 140-a third wire clip; 150-fourth wire clamp; 160-top beam; 170-a first auxiliary beam; 180-a first oil cylinder; 190-a second oil cylinder; 200-a first fixed pin shaft; 210-a second fixed pin shaft; 220-a first sprocket assembly; 230-a second sprocket assembly; 240-a first drive chain; 250-a second driving chain; 260-a second auxiliary beam; 270-a third fixed pin shaft; 280-a fourth fixed pin shaft; 290-a third sprocket assembly; 300-fourth sprocket assembly; 310-a third driving chain; 320-fourth driving chain; 330-hanging plate; 340-a first splint; 350-a second splint; 360-a third clamping plate; 370-first pulley; 380-a second pulley; 390-fixed block; 400-sprocket; 410-an inverted L-shaped connecting bracket; 420-lifting plate; 430-left fork leg; 440-right fork leg; 450-cargo sensing photosensors; 460-left front road wheel leg; 470-right front road wheel leg; 480-the left fork leg approaches the identification photoelectric sensor; 490-first wiring slots; 500-right fork leg is close to the identification photoelectric sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, a first aspect of the present utility model provides a routing structure of a three-stage mast 20 forklift, the three-stage mast 20 forklift including a forklift body 10, a three-stage mast 20 disposed at a front side of the forklift body 10, a fork carriage 40 liftably disposed on an inner mast 30 of the three-stage mast 20, and a fork carriage lifting control cylinder device 50 disposed at a rear side of the fork carriage 40 and fixedly connected to a bottom of the inner mast 30 at left and right sides, the routing structure including an electric cabinet 60, a communication cable 70, a first pulley assembly 80, a first wire clamp 90, a second wire clamp 100, a second pulley assembly 110, and a wire transfer box 120;

referring to fig. 3, the lane change box 120 is mounted on the fork carriage 40; referring to fig. 2 and 4, the first pulley assembly 80 is mounted on the lift bar of the fork lift control cylinder apparatus 50; referring to fig. 2 and 5, the first wire clamp 90 and the second wire clamp 100 are disposed on a base 130 of the fork lift control cylinder device 50, the base 130 is composed of two parallel plates, two ends of each parallel plate are respectively connected with a left portal column and a right portal column at the bottom of the inner portal 30, the first wire clamp 90 is disposed on the parallel plate at the front side and is matched with the first pulley assembly 80, and the second wire clamp 100 is disposed on the parallel plate at the rear side and is matched with the second pulley assembly 110; referring to fig. 3 and 6, the second pulley assembly 110 is mounted on top of the right mast of the middle mast 510 of the tertiary mast 20; referring to fig. 3, the electric cabinet 60 is mounted on an outer door frame 520 of the tertiary door frame 20 above the forklift body 10; one end of the communication cable 70 is connected to the electric cabinet 60, and the other end of the communication cable 70 is connected to the wire transferring box 120 through the second pulley assembly 110, the second wire clamp 100, the first wire clamp 90 and the first pulley assembly 80 in sequence. In the present utility model, after the communication cable 70 extends from the electric cabinet 60, it bypasses the second pulley assembly 110 downward, passes through the second wire clamp 100 and the first wire clamp 90 sequentially, then goes upward, reaches the first pulley assembly 80, goes downward around the first pulley assembly 80, and is connected to the wire box 120 on the back of the fork frame 40, the first wire clamp 90 and the second wire clamp 100 function to press the communication cable 70 between the first pulley assembly 80 and the second pulley assembly 110 onto the base 130 of the fork frame lifting control cylinder device 50, and two ends of the communication cable 70 are respectively fixed in the electric cabinet 60 and the wire box 120.

Referring to fig. 3, in an alternative embodiment of the first aspect of the present utility model, the routing structure further includes a third wire clip 140 and a fourth wire clip 150, a first auxiliary beam 170 is disposed between the top cross member 160 of the middle door frame 510 and the left and right door frame posts of the outer door frame 520 between the electric cabinet 60, and the fourth wire clip 150 is mounted on the first auxiliary beam 170 through an auxiliary bracket; referring to fig. 7, the third wire clamp 140 is disposed at the wire inlet of the wire transferring box 120; after the communication cable 70 exits from the electric cabinet 60, the other end of the communication cable 70 is sequentially connected to the wire transferring box 120 through the fourth wire clamp 150, the second pulley assembly 110, the second wire clamp 100, the first wire clamp 90, the first pulley assembly 80 and the third wire clamp 140. In the present utility model, the two ends of the communication cable 70 are fixed by the fourth wire clamp 150 and the third wire clamp 140, so that the pulling of the two end interfaces of the communication cable 70 during the lifting process of the three-stage gantry 20 can be avoided.

Referring to fig. 3, in an alternative embodiment of the first aspect of the present utility model, a first cylinder 180 and a second cylinder 190 are respectively disposed on a left mast and a right mast of the outer mast 520, a telescopic rod of the first cylinder 180 is connected to a left end of the top beam 160 of the middle mast 510, and a telescopic rod of the second cylinder 190 is connected to a right end of the top beam 160 of the middle mast 510; in the present utility model, the top beam 160 is connected to the left mast and the left mast of the middle mast 510, and the top beam 160 is used to extend the top of the middle mast 510 to be connected to the first cylinder 180 and the second cylinder 190 for lifting;

the left and right ends of the first auxiliary beam 170 are respectively provided with a first fixed pin shaft 200 and a second fixed pin shaft 210, the top ends of the left portal column and the right portal column of the middle portal frame 510 are respectively provided with a first sprocket assembly 220 and a second sprocket assembly 230, the first fixed pin shaft 200 is connected with a first driving chain 240, and referring to fig. 2 and 7, the first driving chain 240 bypasses the first sprocket assembly 220 to extend downwards and is connected with the lower half part of the left portal column of the inner portal 30; referring to fig. 8 and 3, a second driving chain 250 is connected to the second fixing pin 210, and the second driving chain 250 extends downward around the second sprocket assembly 230 and is connected to the lower half of the right mast of the inner mast 30. In the present utility model, the linkage between the middle frame 510 and the inner frame 30 is such that the middle frame 510 is lifted by the first and

second cylinders

180 and 190 while the first and

second sprocket assemblies

220 and 230 on the middle frame 510 pull the first and

second driving chains

240 and 250, respectively, and the first and

second driving chains

240 and 250 apply pulling forces to the lower half portions of the left and right frame posts of the inner frame 30, respectively, so that the inner frame 30 is lifted synchronously.

Referring to fig. 2, in an alternative embodiment of the first aspect of the present utility model, a second auxiliary beam 260 is disposed between the middle portion of the left mast and the middle portion of the right mast of the inner mast 30, and a third fixing pin 270 and a fourth fixing pin 280 are disposed on the second auxiliary beam 260 at intervals; referring to fig. 9, a third sprocket assembly 290 and a fourth sprocket assembly 300 are respectively disposed on the left and right sides of the lifting rod of the fork lift control cylinder device 50, and a third driving chain 310 is connected to the third fixed pin 270; the third driving chain 310 bypasses the third sprocket assembly 290 and is connected with the fork frame 40, and the fourth fixing pin shaft 280 is connected with a fourth driving chain 320; the fourth drive chain 320 is coupled to the fork carriage 40 around the fourth sprocket assembly 300. In the present utility model, the third fixing pin 270 and the fourth fixing pin 280 are disposed in the middle of the second auxiliary beam 260 near the second auxiliary beam 260, and the purpose of the third fixing pin 270 and the fourth fixing pin 280 is to cooperate with the third sprocket assembly 290, the third driving chain 310, the fourth sprocket assembly 300 and the fourth driving chain 320, and the lifting action of the fork frame 40 on the inner gantry 30 is that the lifting rod of the cylinder device 50 is lifted during the lifting control of the fork frame, so as to drive the third sprocket assembly 290 and the fourth sprocket assembly 300 to lift, and the fork frame 40 is pulled by the second auxiliary beam 260, the third fixing pin 270, the fourth fixing pin 280, the third driving chain 310 and the fourth driving chain 320 to lift.

Referring to fig. 10, in an alternative embodiment of the first aspect of the present utility model, the second pulley assembly 110 includes a hanging plate 330, a first clamping plate 340, a second clamping plate 350, and a third clamping plate 360 which are spaced apart and vertically disposed on the hanging plate 330, a first pulley 370 which is disposed between the first clamping plate 340 and the second clamping plate 350 by a rotation shaft, and a second pulley 380 which is disposed between the second clamping plate 350 and the third clamping plate 360 by a rotation shaft. In the present utility model, the number of pulleys included in the second pulley assembly 110 may be set according to actual needs, including but not limited to 2 of the embodiments, and the structure of the first pulley assembly 80 may be the same as that of the second pulley assembly 110, and the second pulley assembly 110 and the first pulley assembly 80 may be different in that the installation direction is perpendicular.

Referring to fig. 10, in an alternative embodiment of the first aspect of the present utility model, the second sprocket assembly 230 includes a fixed block provided on the top end of the right mast of the middle frame 510, a sprocket 400 provided on the fixed block through a rotation shaft, and the hanging plate 330 of the second pulley assembly 110 is disposed side by side to the sprocket 400 through an inverted L-shaped connection bracket. In this embodiment, the first sprocket assembly 220 and the second sprocket assembly 230 have the same structure but are installed in a symmetrical manner, the third sprocket assembly 290 and the fourth sprocket assembly 300 also include a rotation shaft and a sprocket 400, the third sprocket assembly 290 and the fourth sprocket assembly 300 are symmetrically disposed on the lifting rod of the fork lift control cylinder device 50, and the second pulley assembly 110 is installed on the third sprocket assembly 290.

Referring to fig. 1, in an alternative embodiment of the first aspect of the present utility model, the fork frame 40 includes a lifting plate 420, and a left fork leg 430 and a right fork leg 440 which are disposed on the lifting plate 420 at intervals, and a cargo sensing photoelectric sensor 450 is disposed on the lifting plate 420 between the left fork leg 430 and the right fork leg 440, and a signal trace of the cargo sensing photoelectric sensor 450 is connected to the turn box 120.

Referring to fig. 11, in an alternative embodiment of the first aspect of the present utility model, left and right sides of the bottom of the front end of the forklift body 10 are respectively provided with a left front road wheel leg 460 and a right front road wheel leg 470 in a forward extending manner, a hollow is formed in the left fork leg 430 to form a first cavity for accommodating the left front road wheel leg 460, and a hollow is formed in the right fork leg 440 to form a second cavity for accommodating the right front road wheel leg 470. After being folded, the left fork leg 430 and the left front walking wheel leg 460 are integrated, the right fork leg 440 and the right front walking wheel leg 470 are integrated, and the structure of the whole forklift is more attractive.

Referring to fig. 11, in an alternative embodiment of the first aspect of the present utility model, a left fork leg approaching identification photoelectric sensor 480 is disposed at a front end of the first cavity inside the left fork leg 430, a first wire slot 490 is disposed on a right side surface of the left fork leg 440, and the first wire slot 490 is used for guiding a signal wire of the left fork leg approaching identification photoelectric sensor 480 to pass through a bottom of the lifter plate 420 and then be connected to the wire box 120; the front end of the second cavity inside the right fork leg 440 is provided with a right fork leg approaching identification photoelectric sensor 500, the left side surface of the right fork leg 440 is provided with a second wiring groove, and the second wiring groove is used for guiding the signal wiring of the right fork leg approaching identification photoelectric sensor 500 to pass through the bottom of the lifting plate 420 and then be connected into the wire transferring box 120. In the utility model, the front end of the first wiring groove 490 is provided with a wiring hole which is communicated with the inside of the left fork leg 430, and similarly, the front end of the second wiring groove is provided with a wiring hole which is communicated with the inside of the right fork leg 440.

Further, a second aspect of the present utility model provides a three-stage mast 20 forklift, the three-stage mast 20 forklift including a forklift body 10, a three-stage mast 20 provided at a front side of the forklift body 10, a fork carriage 40 liftable and lowerable provided on an inner mast 30 of the three-stage mast 20, a fork carriage lifting control cylinder device 50 provided at a rear side of the fork carriage 40 and fixedly connected to bottoms of the inner masts 30 at left and right sides, a transfer box 120 mounted on the fork carriage 40; a first pulley assembly 80 mounted on the lifting rod of the fork carriage lifting control cylinder device 50; a first wire clamp 90 and a second wire clamp 100 provided on a base 130 of the fork carriage lifting control cylinder device 50; a second pulley assembly 110 mounted on the top end of the right mast of the middle mast 510 of the tertiary mast 20; electric cabinets 60 mounted on left and right mast columns of an outer mast 520 of the three-stage mast 20 above the forklift body 10; and one end is connected to the electric cabinet 60, and the other end is connected to the communication cable 70 in the cable transferring box 120 through the second pulley assembly 110, the second cable clamp 100, the first cable clamp 90 and the first pulley assembly 80 in sequence.

In summary, the utility model provides a routing structure of a three-stage portal forklift and the three-stage portal forklift, and the routing structure only comprises an electric cabinet, a communication cable, a first pulley assembly, a first wire clamp, a second pulley assembly and a wire transfer box; wherein, the line transferring box is arranged on the fork frame; the first pulley assembly is arranged on a lifting rod of the fork frame lifting control middle cylinder device; the first wire clamp and the second wire clamp are arranged on a base of the fork frame lifting control middle cylinder device; the second pulley assembly is arranged on a top cross beam of a middle door frame of the three-stage door frame; by means of the first pulley assembly, the second pulley assembly, the first wire clamp and the second wire clamp, when the three-stage portal and the fork frame are unfolded, communication cables among the electric cabinet, the second pulley assembly, the second wire clamp, the first pulley assembly and the wire rotating box cannot be stacked in a clustered mode.

Although the present utility model has been described with reference to the preferred embodiments, it should be understood that the utility model is not limited to the particular embodiments described, but can be modified and altered by persons skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a three-stage portal fork truck walk line structure, three-stage portal fork truck includes fork truck automobile body, sets up the three-stage portal of fork truck automobile body front side, liftable setting is in fork truck on the inner portal of three-stage portal, and set up in the rear side of fork truck and with the bottom fixed connection's of inner portal of left and right sides fork truck lift control middle cylinder device, its characterized in that walks line structure and includes electric cabinet, communication cable, first pulley assembly, first fastener, second pulley assembly and change line box;

2. The routing structure of the three-stage mast forklift according to claim 1, further comprising a third wire clamp and a fourth wire clamp, wherein a first auxiliary beam is arranged between a top cross beam of the middle mast and left and right mast columns of the outer mast between the electric cabinet, and the fourth wire clamp is mounted on the first auxiliary beam through an auxiliary bracket; the wire inlet of the wire rotating box is provided with the third wire clamp; the other end of the communication cable sequentially passes through the fourth wire clamp, the second pulley assembly, the second wire clamp, the first pulley assembly and the third wire clamp to be connected into the wire transferring box.

3. The routing structure of the three-stage portal forklift truck according to claim 2, wherein a first oil cylinder and a second oil cylinder are respectively arranged on a left portal stand column and a right portal stand column of the outer portal, a lifting rod of the first oil cylinder is connected with the left end of the top cross beam of the middle portal frame, and a telescopic rod of the second oil cylinder is connected with the right end of the top cross beam of the middle portal frame;

4. The routing structure of the three-stage portal forklift truck according to claim 3, wherein a second auxiliary beam is arranged between the middle part of the left portal column and the middle part of the right portal column of the inner portal, and a third fixed pin shaft and a fourth fixed pin shaft are arranged on the second auxiliary beam at intervals; the left side and the right side of the lifting rod of the fork frame lifting control middle cylinder device are respectively provided with a third chain wheel assembly and a fourth chain wheel assembly, and a third driving chain is connected to the third fixed pin shaft; the third driving chain bypasses the third chain wheel assembly and is connected with the fork frame, and a fourth driving chain is connected to the fourth fixed pin shaft; the fourth drive chain bypasses the fourth chain wheel assembly and is connected with the fork frame.

5. The three-stage mast fork lift truck of claim 4, wherein the second pulley assembly comprises a hitch plate, a first clamp plate, a second clamp plate, and a third clamp plate spaced apart from and vertically disposed on the hitch plate, a first pulley disposed between the first clamp plate and the second clamp plate via a pivot, and a second pulley disposed between the second clamp plate and the third clamp plate via a pivot.

6. The routing structure of the three-stage mast forklift of claim 5, wherein the second sprocket assembly comprises a fixed block arranged on the top end of a right mast of the middle mast, sprockets arranged on the fixed block through a rotating shaft, and the hanging plates of the second pulley assembly are arranged beside the sprockets side by side through an inverted-L-shaped connecting bracket.

7. The routing structure of the three-stage portal forklift according to claim 1, wherein the fork frame comprises a lifting plate, and a left fork leg and a right fork leg which are arranged on the lifting plate at intervals, a cargo sensing photoelectric sensor is arranged on the lifting plate between the left fork leg and the right fork leg, and a signal routing of the cargo sensing photoelectric sensor is connected to the wire transferring box.

8. The routing structure of the three-stage portal forklift according to claim 7, wherein left and right sides of the bottom of the front end of the forklift body are respectively provided with a left front traveling wheel supporting leg and a right front traveling wheel supporting leg in a forward extending mode, a first cavity for accommodating the left front traveling wheel supporting leg is formed in the left fork leg, and a second cavity for accommodating the right front traveling wheel supporting leg is formed in the right fork leg.

9. The routing structure of the three-stage portal forklift truck according to claim 8, wherein a left fork leg approaching identification photoelectric sensor is arranged at the front end of the first cavity inside the left fork leg, a first routing groove is arranged on the right side surface of the left fork leg, and the first routing groove is used for guiding a signal routing of the left fork leg approaching identification photoelectric sensor to pass through the bottom of the lifting plate and then be connected into the wire transfer box; the inside of right fork leg the front end of second cavity is provided with right fork leg and supports near identification photoelectric sensor, be provided with the second wiring groove on the left surface of right fork leg, the second wiring groove is used for guiding right fork leg supports near identification photoelectric sensor's signal wiring and passes through behind the bottom of lifter plate the line box turns.

10. The three-stage portal forklift is characterized by comprising a forklift body; the three-stage portal frame is arranged at the front side of the forklift body; a fork frame arranged on the inner door frame of the three-stage door frame in a lifting manner; the fork frame lifting control middle cylinder device is arranged at the rear side of the fork frame and is fixedly connected with the bottoms of the inner door frames at the left side and the right side; a wire transferring box mounted on the fork frame; a first pulley assembly mounted on a lifting rod of the fork frame lifting control middle cylinder device; a first wire clamp and a second wire clamp arranged on a base of the fork frame lifting control middle cylinder device; the second pulley assembly is arranged at the top end of the right portal column of the middle portal of the three-stage portal; electric cabinets arranged on a left portal stand column and a right portal stand column of an outer portal of the three-stage portal above the forklift body; and one end of the communication cable is connected into the electric cabinet, and the other end of the communication cable is connected into the cable transferring box through the second pulley assembly, the second wire clamp, the first wire clamp and the first pulley assembly in sequence.