CN210260990U

CN210260990U - Large-span beam type forklift with cantilever fork

Info

Publication number: CN210260990U
Application number: CN201921070110.XU
Authority: CN
Inventors: 陶玮; 张成松
Original assignee: Nanjing Nianda Furnace Science And Technology Co ltd
Current assignee: Nanjing Nianda Furnace Science And Technology Co ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-07
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a big span beam formula fork truck of being furnished with cantilever fork, including being located the cart traveling frame mechanism that adopts speed reducer drive walking on the track, being located the cart traveling frame mechanism and adopting motor direct drive's two sets of symmetrical arrangement's ball elevating screw mechanism and erect the cantilever fork mechanism as main bearing on cart traveling frame mechanism. The large-span beam type forklift with the cantilever fork ensures that the whole thick and heavy steel plate can enter the furnace quickly and stably without deformation, and the steel plate can be discharged from the furnace stably and quickly after heat treatment.

Description

Large-span beam type forklift with cantilever fork

Technical Field

The utility model relates to a large span beam type forklift with a cantilever fork, which is used for loading and taking the whole heavy steel plate as an industrial heat treatment furnace for heat treatment. The material fork-taking device can also be used for fork-taking, unloading or stacking materials (such as bar materials, bundle materials and the like) under similar working conditions.

Background

The whole steel plate heat treatment furnace is an industrial furnace commonly used at present, the utility model relates to a loading and unloading forklift for the whole heavy steel plate heat treatment furnace. If a common motor-driven forklift is used for taking a whole thick and heavy steel plate with the thickness of about (15 meters multiplied by 4 meters multiplied by 0.010-0.1 meter), even if the tonnage of the common motor-driven forklift is enough to fork and lift the whole thick and heavy steel plate to travel at high altitude, the steel plate can be seriously deformed, the feeding for subsequent heat treatment is difficult to enter, the steel plate is difficult to exit after heat treatment, the heat treatment deformation of the steel plate is serious, and the blank is uneven and irregular in cuts and has grooves and burrs during subsequent small-block cutting. Even the steel plate may slide and shift when the whole steel plate is forked, so that the gravity center of the common motor forklift is unstable and overturns, and safety production accidents are caused. Sometimes, the furnace door of a high-temperature furnace at about 1000 ℃ is opened for a long time due to the difficulty in feeding and discharging, so that the heat energy in the hearth is seriously dissipated, and the energy is greatly wasted and the heat loss caused by unnecessary furnace shutdown maintenance is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a big span beam formula fork truck of being furnished with cantilever fork for the industrial heat treatment furnace that whole heavy steel sheet was used for thermal treatment is with adorning, getting material fork truck.

The utility model discloses specific technical scheme is:

a large-span beam forklift with a cantilever fork comprises a cart walking frame mechanism which is positioned on a track and driven to walk by a speed reducer, two sets of symmetrically arranged ball lifting screw mechanisms which are positioned on the cart walking frame mechanism and directly driven by a motor, and the cantilever fork mechanism which is erected on the cart walking frame mechanism and is used as a main bearing;

the cart traveling frame mechanism comprises two pairs of cast steel traveling wheels, four square stand columns, four positioning sliding sleeves and two square tube cross beams, wherein the two pairs of cast steel traveling wheels are symmetrically distributed on a track and are defined as a left pair of cast steel traveling wheels and a right pair of cast steel traveling wheels; the two pairs of cast steel travelling wheels are arranged in the travelling wheel box body, a gear pair is arranged on one cast steel travelling wheel in the left pair of cast steel travelling wheels and the right pair of cast steel travelling wheels, and the gear pair is driven by a speed reducer with a brake arranged in the travelling wheel box body to realize the forward and backward movement of the cast steel travelling wheels; a rectangular supporting tube is arranged between two traveling wheel box bodies in the left cast steel traveling wheel pair, and a rectangular supporting tube is arranged between two traveling wheel box bodies of the right cast steel traveling wheel pair; the four square stand columns are respectively arranged corresponding to the four travelling wheel box bodies, and the four square stand columns are respectively vertically arranged on the four travelling wheel box bodies; four positioning sliding sleeves are respectively sleeved on the four square stand columns in a sliding manner; defining two square tube cross beams as a left square tube cross beam and a right square tube cross beam respectively, wherein two ends of the left square tube cross beam are connected with the tops of two positioning sliding sleeves arranged on the left cast steel travelling wheels respectively, and two ends of the right square tube cross beam are connected with the tops of two positioning sliding sleeves arranged on the right cast steel travelling wheels respectively;

the two sets of ball screw lifting mechanisms are respectively arranged on the two square tube cross beams, and each set of ball screw lifting mechanism comprises a motor and two ball screw lifters, wherein the two ball screw lifters are respectively fixed at two ends of the square tube cross beam, and ball screws on the two ball screw lifters respectively penetrate through the square tube cross beam to be connected with the tops of two square stand columns below the square tube cross beam; the two ball screw lifters are directly connected on an axis through a plurality of couplers and a plurality of transition shafts; the motor is horizontally arranged on the end surface of the square tube beam through a motor support, and a motor shaft of the motor is connected with one of the ball screw lifters through a coupling;

the cantilever fork mechanism comprises a steel pipe girder and a plurality of cantilever forks, and two ends of the steel pipe girder are respectively fixed on two square pipe crossbeams; a plurality of cantilever forks all set up on the steel pipe girder along steel pipe girder length direction and interval, and the cantilever fork is parallel with square pipe crossbeam.

Right the utility model discloses technical scheme's improvement all sets up the draw runner at the medial surface of location sliding sleeve, and the draw runner passes through the bolt fastening and on the location sliding sleeve, paints emollient between draw runner and the square stand outer cylinder.

It is right to the utility model discloses technical scheme's improvement sets up supporting component on the transition axle between two ball screw elevators, and supporting component includes support and bearing frame, and the support is fixed and is managed the crossbeam in side on the surface, and the bearing frame setting is at the support top, and the transition axle rotates to be supported on the bearing frame. The provision of the support assembly prevents the transition shaft from sagging.

Right the utility model discloses technical scheme's improvement, cantilever fork tip passes through mounting panel, vertical frame and bracing frame setting on the steel pipe girder. The mounting plate is made of a steel plate with a threaded hole, and the threaded hole is fastened with a corresponding bolt in a mounting plate bolt hole in the cantilever fork when the mounting plate is to be mounted. The vertical frame and the inclined strut frame are welded and fixed with the bearing girder by square pipes and rectangular pipes and are welded by matching with angle plates, so that the triangular structure formed by the vertical frame and the inclined strut frame is firmer.

Right the utility model discloses technical scheme's improvement, steel pipe girder's both ends terminal surface all installs the hookup flange of circle in the foreign side, and hookup flange cooperation location keybar and hookup bolt connect on two square tubular beams, convenient in the maintenance and the maintenance of being in production, installation, debugging, dismouting, field assembly, examination machine and in the future in the big span beam type fork truck who is furnished with cantilever fork.

Compared with the prior art, the utility model, its beneficial effect is:

1. this big span beam type fork truck that is furnished with cantilever fork makes whole thick and heavy steel sheet advance the stove fast, steady, non-deformable, and it is steady, rapid to go out the stove after the thermal treatment, has reduced the probability of the defective goods of follow-up process.

2. The large-span beam type forklift with the cantilever fork enables the energy to be saved and the heat loss to be reduced in the using process of the heat treatment furnace, improves the working environment of operators and contributes to the contribution of enterprises to environmental protection.

Drawings

Fig. 1 is a first partial view of a broken line a-a in a plan view of the long span beam type forklift equipped with the outrigger fork of the embodiment.

Fig. 2 is a second partial view of the middle portion of the breaking line a-a and B-B in the plan view of the long span beam type forklift equipped with the outrigger fork of the embodiment.

Fig. 3 is a third partial view of a broken line B-B in the plan view of the long span beam type forklift equipped with the outrigger fork of the embodiment.

Fig. 4 is a side view of the long span beam forklift equipped with the outrigger fork of the present embodiment.

FIG. 5 is a first partial view of a break line in a main view of the longspan beam fork of the present embodiment with the outrigger fork.

FIG. 6 is a second partial view of the main view of the longspan beam fork of the present embodiment with the outriggers shown in C-C and D-D as the middle portion of the break line.

FIG. 7 is a third partial view of a break line in a main view of the longspan beam fork of the present embodiment with a suspension fork.

Fig. 8 is an enlarged view at a in fig. 4.

Fig. 9 is an enlarged view at B in fig. 4.

Fig. 10 is an enlarged view at C in fig. 4.

Detailed Description

The technical solution of the present invention is explained in detail below, but the scope of protection of the present invention is not limited to the embodiments.

In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with the accompanying fig. 1 to 10 and the embodiments.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the large span beam forklift equipped with the boom fork in the present embodiment includes a cart traveling frame mechanism 1 that travels on a track 5 by being driven by a speed reducer, two sets of symmetrically arranged ball lifting screw mechanisms 2 that are directly driven by a motor and are located on the cart traveling frame mechanism 1, and a boom fork mechanism 3 that is erected on the cart traveling frame mechanism 1 as a main load.

As shown in fig. 4 and 8, the cart traveling frame mechanism 1 comprises two pairs of cast steel traveling wheels 1-1, four square upright posts 1-4, four positioning sliding sleeves 1-5 and two square tube cross beams 1-6 which are symmetrically distributed on a track.

As shown in fig. 8, two pairs of cast steel running wheels 1-1 are defined as a left pair of cast steel running wheels and a right pair of cast steel running wheels; two pairs of cast steel running wheels 1-1 are arranged in a running wheel box body 1-2, a gear pair is arranged on one of the left cast steel running wheel pair and the right cast steel running wheel pair, and the gear pair is driven by a speed reducer with a brake arranged in the running wheel box body 1-2 to realize the forward and backward movement of the cast steel running wheels.

The travelling wheel box body 1-2 is welded by steel plates and machined by a machine tool.

In the embodiment, the left pair of cast steel travelling wheels and the right pair of cast steel travelling wheels are driven by a speed reducer with a brake arranged in the travelling wheel box body 1-2 to realize the advancing and retreating of the cast steel travelling wheels, specifically, one gear in a gear set is arranged on a motor shaft of the speed reducer, and the other gear is arranged on the cast steel travelling wheels; two gears in the gear set are meshed; the speed reducer rotates to drive the cast steel travelling wheel to travel on the track 5 through the gear set.

As shown in fig. 8, a rectangular support tube 1-3 is arranged between two traveling wheel boxes 1-2 in the left pair of cast steel traveling wheels, and a rectangular support tube 1-3 is arranged between two traveling wheel boxes 1-2 in the right pair of cast steel traveling wheels; four square upright posts 1-4 are respectively arranged corresponding to the four travelling wheel boxes 1-2, the four square upright posts 1-4 are respectively vertically arranged on the four travelling wheel boxes 1-2, and the four square upright posts 1-4 support the weight of the ball lifting screw mechanism 2 and the cantilever fork mechanism 3 and the weight of the whole thick and heavy steel plate 100.

As shown in fig. 8, four positioning sliding sleeves 1-5 are respectively sleeved on four square upright posts 1-4 in a sliding manner; the tops of the four positioning sliding sleeves 1-5 are respectively fixed with the square tube cross beams 1-6 through cross beam connecting discs 1-6-1 welded on the square tube cross beams 1-6. The four positioning sliding sleeves 1-5, the ball lifting screw mechanism 2 and the cantilever fork mechanism 3 are used for lifting the whole steel plate up and down together, and the four positioning sliding sleeves 1-5 are used for ensuring the stability of the rack and the performance of the forklift under the dynamic load of the frame.

In the embodiment, the inner side surfaces of the positioning sliding sleeves 1-5 are all provided with sliding strips 1-5-1, the sliding strips 1-5-1 are fixed on the positioning sliding sleeves 1-5 through bolts, and lubricant is smeared between the sliding strips 1-5-1 and the outer cylindrical surface of the square upright posts 1-4.

As shown in fig. 8, two square tubular beams 1-6 are defined as a left square tubular beam and a right square tubular beam, wherein two ends of the left square tubular beam are respectively connected to the tops of two positioning sliding sleeves 1-5 arranged on the left pair of cast steel running wheels, and two ends of the right square tubular beam are respectively connected to the tops of two positioning sliding sleeves 1-5 arranged on the right pair of cast steel running wheels.

As shown in fig. 4 and 9, the two sets of ball screw mechanisms 2 in this embodiment are used to realize the simultaneous ascending or descending of the whole thick and heavy steel plate, and the two sets of ball screw mechanisms 2 work synchronously.

As shown in fig. 9, two sets of ball screw mechanisms 2 are respectively disposed on two square tubular beams 1 to 6, each set of ball screw mechanism 2 includes a motor 2-1 and two ball screw lifters 2-3, the two ball screw lifters 2-3 are respectively fixed at two ends of the square tubular beams 1 to 6, and bases of the two ball screw lifters 2-3 are fixed on the square tubular beams 1 to 6 with bolts.

As shown in fig. 9, the ball screws 2-6 of the two ball screw elevators 2-3 respectively penetrate through the square tubular beams 1-6 to connect the tops of the two square upright posts 1-4 below the square tubular beams 1-6. The method specifically comprises the following steps: connecting discs 1-4-1 are welded at the tops of the square upright posts 1-4, bolt holes are formed in the connecting discs, screw connecting flanges 2-6-1 are arranged at the tail ends of ball screws 2-6 on the ball screw lifters 2-3, and the screw connecting flanges at the tail ends of the ball screws are fixedly connected with the connecting discs welded at the tops of the square upright posts 1-4 through bolts 2-6-2.

The manufacturer that the ball screw lift 2-3 outsourcing purchased the piece in this embodiment, preferentially adopted: the Shandong Texiao elevating screw factory sells the types as follows: JWH500 DS-H-300-M; the specifications of the ball screw elevator 2-3 are as follows: 50 tons, hanging down; the lifting screw box body is made of: cast steel, turbine speed ratio: 10^2/3The screw pitch of the lead screw is 32 mm; lifting stroke: 300mm, the lifting speed is 0-2.5 m/min; the lubrication mode is as follows: lubricating with lubricating oil; the specification (55mm) marked on the wall of the connecting thread at the end part of the screw rod is lengthened by 200 mm; to 255 mm.

As shown in fig. 4, two ball screw lifters 2-3 are directly connected on one axis through a plurality of couplings 2-5 and a plurality of transition shafts 2-4; the design can be made to achieve beam forklift operation at any given large span.

As shown in figure 4, a motor 2-1 is horizontally arranged on the end face of a square tube beam 1-6 through a motor support 2-2, and a motor shaft of the motor 2-1 is connected with one of ball screw lifters 2-3 through a coupler 2-5.

In this embodiment, the motor 2-1 is an original motor with a brake of 8 grades, which is a purchased component, and is manufactured by a manufacturer preferentially adopted by a caruncle jingl motor factory, and the sold model is as follows: YZPEJ250M2-8, 37KW variable frequency speed regulating brake motor for metallurgy and hoisting.

As shown in fig. 10, a support assembly 4 is arranged on a transition shaft 2-4 between two ball screw lifters 2-3, the support assembly 4 comprises a support 4-1 and a bearing seat 4-2, the support 4-1 is fixed on the surface of a square pipe cross beam 1-6, the bearing seat 4-2 is arranged at the top of the support 4-1, and the transition shaft 2-4 is rotatably supported on the bearing seat 4-2. The provision of the support assembly 4 prevents the transition shafts 2-4 from sagging.

As shown in fig. 4, the cantilever fork mechanism 3 comprises a steel pipe girder 3-1 and a plurality of cantilever forks 3-2, and two ends of the steel pipe girder 3-1 are respectively fixed on two square pipe cross beams 1-6; the plurality of cantilever forks 3-2 are arranged on the steel pipe girder 3-1 at intervals along the length direction of the steel pipe girder 3-1, and the cantilever forks 3-2 are parallel to the square pipe girder 1-6.

The steel pipe girders 3-1 are spliced into load-bearing girders with corresponding lengths by seamless steel pipe processing, and the steel pipe girders have the characteristics of torsion resistance and bending resistance. The end faces of the two ends of the girder are provided with connecting flanges with square outside and round inside, and the connecting flanges are matched with the positioning key bars and connected with the connecting bolts. The large-span beam type forklift with the cantilever fork is convenient to produce, install, debug, disassemble and assemble on site, test the machine and maintain in the future.

The end part of the cantilever fork 3-2 is arranged on the steel pipe girder 3-1 through a mounting plate, a vertical frame and an inclined strut frame. The mounting plate is made of a steel plate with a threaded hole, and the threaded hole is fastened with a corresponding bolt in a mounting plate bolt hole in the cantilever fork when the mounting plate is to be mounted. The vertical frame and the inclined strut frame are fixed with the bearing girder by welding a square tube and a rectangular tube. And the angle plates are matched for welding, so that the triangular structure formed by the angle plates is firmer.

The cantilever fork 3-2 of the embodiment is composed of a plurality of single fork heads, and the fork heads and the girder are connected and positioned by bolts and flat key strips, so that the disassembly, the transportation and the maintenance are convenient. And also facilitates future maintenance and replacement. A reinforcing angle plate is arranged at the root part of each fork head and the connecting plate, so that the phenomenon that stress of a welding bead is excessively concentrated due to the cantilever effect when each fork head is loaded, and the welding bead is cracked is avoided. The fork head is welded by the fixture, so that the consistency of the size is ensured, the thick and heavy steel plate taken by the fork is uniformly stressed, and the deformation is not easy to generate. The fork head is welded by a square tube or H-shaped steel or I-shaped steel.

The forklift of the embodiment can stably fork the whole thick and heavy steel plate with the thickness of about (15 meters multiplied by 4 meters multiplied by 0.010-0.1 meters), and lift the steel plate to a certain height. And then, the cart traveling frame mechanism travels to convey the whole thick and heavy steel plate to the position above the whole thick and heavy steel plate material cushion of the hearth. The ball screw mechanism of the forklift enables the cantilever fork to descend to a certain height, and the whole thick and heavy steel plate is stably placed on the steel plate material pad in the furnace. Then, the cart walking frame mechanism retreats, the cantilever fork retreats from the hearth, and the heat treatment furnace door is closed; after the steel plate is processed, forking out the whole thick and heavy steel plate according to the reverse action, and carrying out subsequent process treatment; the forklift can stably fork the whole thick and heavy steel plate for furnace entering heat treatment, and avoids unnecessary heat dissipation in the furnace and heat loss caused by unnecessary unplanned furnace shutdown due to deformation of the steel plate, slippage of the center of gravity of the steel plate and difficulty in feeding and discharging when a motor forklift is used for operation. The efficiency of volume production has also been improved when having reduced the emission of carbon dioxide. Plays a positive role in environmental protection.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A large-span beam forklift with a cantilever fork is characterized by comprising a cart travelling frame mechanism (1) which is positioned on a track and driven to travel by a speed reducer, two sets of symmetrically arranged ball lifting screw mechanisms (2) which are positioned on the cart travelling frame mechanism (1) and directly driven by a motor, and a cantilever fork mechanism (3) which is erected on the cart travelling frame mechanism (1) and is used as a main bearing;

the cart traveling frame mechanism (1) comprises two pairs of cast steel traveling wheels (1-1), four square upright posts (1-4), four positioning sliding sleeves (1-5) and two square tube cross beams (1-6) which are symmetrically distributed on a track, wherein the two pairs of cast steel traveling wheels (1-1) are defined to be divided into a left pair of cast steel traveling wheels and a right pair of cast steel traveling wheels; two pairs of cast steel travelling wheels (1-1) are arranged in a travelling wheel box body (1-2), a gear pair is arranged on one of the left cast steel travelling wheel pair and the right cast steel travelling wheel pair, and the gear pair is driven by a speed reducer with a brake arranged in the travelling wheel box body (1-2) to realize the forward and backward movement of the cast steel travelling wheels; a rectangular supporting pipe (1-3) is arranged between two travelling wheel box bodies (1-2) in the left pair of cast steel travelling wheels, and a rectangular supporting pipe (1-3) is arranged between the two travelling wheel box bodies (1-2) in the right pair of cast steel travelling wheels; four square upright posts (1-4) are respectively arranged corresponding to the four travelling wheel box bodies (1-2), and the four square upright posts (1-4) are respectively vertically arranged on the four travelling wheel box bodies (1-2); four positioning sliding sleeves (1-5) are respectively sleeved on the four square upright posts (1-4) in a sliding manner; defining two square tube cross beams (1-6) as a left square tube cross beam and a right square tube cross beam respectively, wherein two ends of the left square tube cross beam are connected with the tops of two positioning sliding sleeves (1-5) arranged on the left cast steel travelling wheels respectively, and two ends of the right square tube cross beam are connected with the tops of two positioning sliding sleeves (1-5) arranged on the right cast steel travelling wheels respectively;

the two sets of ball screw lifting mechanisms (2) are respectively arranged on two square pipe cross beams (1-6), each set of ball screw lifting mechanism (2) comprises a motor (2-1) and two ball screw lifters (2-3), the two ball screw lifters (2-3) are respectively fixed at two ends of each square pipe cross beam (1-6), and ball screws on the two ball screw lifters (2-3) respectively penetrate through the square pipe cross beams (1-6) to be connected with the tops of two square upright posts (1-4) positioned below the square pipe cross beams (1-6); the two ball screw lifters (2-3) are directly connected on an axis through a plurality of couplings (2-5) and a plurality of transition shafts (2-4); the motor (2-1) is horizontally arranged on the end face of the square tube beam (1-6) through the motor support (2-2), and the motor shaft of the motor (2-1) is connected with one of the ball screw lifters (2-3) through the shaft coupling (2-5);

the cantilever fork mechanism (3) comprises a steel pipe crossbeam (3-1) and a plurality of cantilever forks (3-2), and two ends of the steel pipe crossbeam (3-1) are respectively fixed on two square pipe crossbeams (1-6); the plurality of cantilever forks (3-2) are arranged on the steel pipe crossbeam (3-1) at intervals along the length direction of the steel pipe crossbeam (3-1), and the cantilever forks (3-2) are parallel to the square pipe crossbeam (1-6).

2. The forklift with a large span beam and a cantilever fork as claimed in claim 1, wherein the inner side surfaces of the positioning sliding sleeves (1-5) are provided with sliding strips (1-5-1), the sliding strips (1-5-1) are fixed on the positioning sliding sleeves (1-5) through bolts, and lubricant is coated between the sliding strips (1-5-1) and the outer cylindrical surfaces of the square columns (1-4).

3. The long-span beam forklift equipped with a cantilever fork according to claim 1, wherein the support assembly (4) is provided on the transition shaft (2-4) between the two ball screw elevators (2-3), the support assembly (4) comprises a support base (4-1) and a bearing block (4-2), the support base (4-1) is fixed on the surface of the square tube beam (1-6), the bearing block (4-2) is provided on the top of the support base (4-1), and the transition shaft (2-4) is rotatably supported on the bearing block (4-2).

4. The long-span girder forklift equipped with a suspension fork according to claim 1, wherein the end of the suspension fork (3-2) is provided on the steel pipe girder (3-1) through a mounting plate, a vertical frame and a diagonal frame.

5. The forklift with a boom fork according to claim 1, wherein the steel pipe girder (3-1) has both end faces fitted with coupling flanges having an outer square and an inner circle, and the coupling flanges are coupled to the two square pipe girders (1-6) in cooperation with the positioning splines and the coupling bolts.