CN212503836U - Forklift portal frame assembly - Google Patents
Forklift portal frame assembly Download PDFInfo
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- CN212503836U CN212503836U CN202021136188.XU CN202021136188U CN212503836U CN 212503836 U CN212503836 U CN 212503836U CN 202021136188 U CN202021136188 U CN 202021136188U CN 212503836 U CN212503836 U CN 212503836U
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Abstract
The utility model provides a fork truck portal assembly, include: an outer gantry; the upper beam assembly comprises two upper beam members with symmetrical structures, and a first connecting piece is connected between the two upper beam members; the lower cross beam assembly comprises two lower cross beam pieces with symmetrical structures, and a second connecting piece is connected between the two lower cross beam pieces; the upper beam part is a precision casting with a hollow interior, the lower beam part is a solid precision casting, and the upper beam part and the lower beam part are respectively connected with the outer door frame in a welding mode. The utility model is formed by welding and forming the precision casting piece and the steel pipe which are provided with the precoated sand shell type casting process technology, the precision casting piece structure eliminates the problems of large welding stress, low strength and easy deformation of a stamping part, the assembly size is ensured by the processing precision, and the dimensional stability of a product is effectively improved; through the reasonable arrangement and optimization of the product structure, the material utilization rate is improved, the manufacturing cost of the product is effectively reduced, and the competitiveness of the product is improved.
Description
Technical Field
The utility model relates to a fork truck technical field especially relates to a fork truck portal assembly.
Background
Fork truck portal carries out the executive component of stack to the goods during fork truck operation, and the structure of present fork truck portal mainly comprises frame, entablature and bottom end rail. The existing upper cross beam and the lower cross beam mostly adopt a steel plate tailor welding scheme, in order to meet the requirements of strength and rigidity, the portal cross beam is formed by tailor welding a plurality of stamping steel plates, and the shape and the outline are characterized by width, thickness and the like. The steel plate cutting, assembling and welding processes are complex; the welding stress is large, the strength is low, the product is easy to deform, the size is unstable, the product performance is finally shown to be the product performance which only preliminarily meets the requirements of the whole vehicle, the material utilization rate is low, the manufacturing cost is high, the production efficiency is low, and the product competitiveness is low.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a fork truck portal assembly for solve current fork truck portal and have that crossbeam welding stress is big, intensity is low, yielding, material utilization is low problem.
The technical scheme of the utility model is realized like this: the utility model provides a fork truck portal assembly, include:
an outer gantry;
the upper beam assembly comprises two upper beam members with symmetrical structures, and a first connecting piece is connected between the two upper beam members;
the lower cross beam assembly comprises two lower cross beam pieces with symmetrical structures, and a second connecting piece is connected between the two lower cross beam pieces;
the upper cross beam piece is a precision casting with a hollow interior, the lower cross beam piece is a solid precision casting, and the upper cross beam piece and the lower cross beam piece are respectively connected with the outer door frame in a welding mode.
On the basis of the technical scheme, preferably, the upper cross beam piece comprises a first casting, a second casting and a third casting, the first casting and the second casting are both bent, cavities are arranged in the first casting and the second casting, a first opening communicated with the cavities is formed in the upper end of the first casting, a second opening communicated with the cavities is formed in the upper end of the second casting, a blocking cover is arranged on the second opening, welding parts matched with the outer door frame are arranged at the lower ends of the first casting and the second casting, the third casting is in a hollow rod shape, two ends of the third casting are respectively connected with the first casting close to the first opening and the second casting close to the second opening in an integrated mode, the first connecting piece is in a hollow tubular shape, and two ends of the first connecting piece are respectively welded with the first openings in the two upper cross beam pieces.
On the basis of above-mentioned technical scheme, it is preferred, the weld part is "L" type breach setting, including horizontal face of weld and vertical face of weld, the horizontal face of weld is used for welding with the top surface of outer portal, vertical face of weld is used for welding with the side of outer portal, the edge of horizontal face of weld and vertical face of weld all is provided with the chamfer.
On the basis of the above technical scheme, preferably, a first lightening hole is formed in the lower end portion of the first casting, and a hoisting hole is formed in the first casting above the first lightening hole.
On the basis of the technical scheme, preferably, a mounting seat for fixing an oil pipeline is arranged on the second casting where the second opening is formed, and a first mounting hole for mounting a chain pull rod of a forklift is further formed in the mounting seat.
On the basis of the technical scheme, preferably, the bottom end rail piece includes the foundry goods body, the below of foundry goods body is connected with support piece, the support piece bottom be provided with outer portal top surface welded binding face, first connecting seat and the second connecting seat that is used for assembling the second connecting piece are offered respectively to the top both ends of foundry goods body, are provided with the snap ring that is used for assembling the transaxle on the foundry goods body at place in the middle of first connecting seat and the second connecting seat, and second connecting seat below is provided with the mounting panel that is used for installing the fork truck hydro-cylinder, offer the second mounting hole that is used for fixed hydro-cylinder on the mounting panel.
On the basis of the above technical scheme, preferably, the second connecting piece includes a seamless pipe and a special pipe, the first connecting seat is provided with a first inserting hole connected with the seamless pipe, and the second connecting seat is provided with a second inserting hole connected with the special pipe.
On the basis of the technical scheme, preferably, the middle part of the support piece is provided with a U-shaped groove, two ends of the support piece are respectively provided with a second lightening hole, and a casting body between the clamping ring and the second connecting seat is provided with a third lightening hole.
On the basis of the technical scheme, preferably, a plurality of first reinforcing ribs are arranged between the bottom of the casting body and the supporting piece, and at least one second reinforcing rib is arranged between the clamping ring and the second connecting seat.
On the basis of the technical scheme, preferably, the binding surface is provided with at least two positioning columns, and the top surface of the outer door frame is provided with positioning holes matched with the positioning columns.
The utility model discloses a have following beneficial effect for prior art:
the utility model discloses a fork truck portal assembly is formed by welding and forming a precision casting piece and a steel pipe which are provided with a precoated sand shell type casting process technology, the precision casting piece structure eliminates the problems of large welding stress, low strength and easy deformation of a stamping part, the assembly size is ensured by processing precision, and the dimensional stability of a product is effectively improved; in addition, through the reasonable arrangement and optimization of the product structure, the material utilization rate is improved, the manufacturing cost of the product is effectively reduced, the competitiveness of the product is improved, and the performance requirements of non-automobile products are met to a great extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a prior art upper beam;
FIG. 2 is a schematic structural view of a lower cross member in the prior art;
fig. 3 is a schematic perspective view of the forklift mast assembly disclosed in the present invention;
fig. 4 is a schematic structural view of an upper cross beam assembly disclosed in the present invention;
fig. 5 is a schematic structural view of an upper cross member disclosed in the present invention;
fig. 6 is a schematic structural view of the lower beam assembly disclosed in the present invention;
fig. 7 is a schematic structural view of the lower cross member disclosed in the present invention;
fig. 8 is the utility model discloses bottom end rail assembly and outer portal assembly structure sketch map.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the upper cross beam and the lower cross beam of the forklift gantry assembly disclosed in the prior art are structurally schematic diagrams, the upper cross beam and the lower cross beam are formed by welding a plurality of stamping steel plates, and the shape and the outline are wide and thick. The steel plate cutting, assembling and welding processes are complex; large welding stress, low strength, easy deformation of products and unstable size.
Therefore, the embodiment of the utility model discloses fork truck portal assembly solves the problem that exists among the prior art.
As shown in FIG. 3, the embodiment of the utility model discloses a fork truck portal assembly, include:
an outer gantry 1;
the upper beam assembly 2 comprises two upper beam members 21 with symmetrical structures, the two upper beam members 21 are precision castings with hollow interiors, and a first connecting piece 22 is connected between the two upper beam members 21;
the lower cross beam assembly 3 comprises two lower cross beam pieces 31 with symmetrical structures, the two lower cross beam pieces 31 are solid precision castings, and a second connecting piece 32 is connected between the two lower cross beam pieces 31;
the upper crossbeam piece 21 is welded and fixed at the upper end of the outer gantry 1, and the lower crossbeam piece 31 is welded and fixed at the lower end of the outer gantry 1.
By adopting the technical scheme, the upper crossbeam piece 21 and the lower crossbeam piece 31 both adopt precision castings, are integrally formed to form a modular design, and the first connecting piece 22 and the second connecting piece 32 both adopt steel pipe materials. Two upper cross members 21 having symmetrical structures can be welded by the first connecting member 22 to form an integral body, thereby forming the upper cross member assembly 2. Two structurally symmetrical lower cross members 31 can be welded by the second connecting member 32 to form an integral body, thereby forming the lower cross member assembly 3. In this embodiment, entablature assembly 2 is used for retraining fixed outer portal 1, and entablature assembly 3 is used for retraining fixed outer portal 1 promptly, still is used for fixed hydro-cylinder and transaxle simultaneously, because the loading capacity of entablature assembly 2 is less than bottom end rail assembly 3 far away, consequently, the embodiment of the utility model provides a for improve the utilization ratio of material for entablature 21 adopts the cavity investment casting, though adopted the cavity investment casting, the sectional area of hollow casting is greater than the sectional area of solid steel sheet among the prior art, therefore the entablature is superior to prior art's solid steel sheet on holistic rigidity.
The upper cross beam piece 21 and the lower cross beam piece 31 of the utility model are molded by a precoated sand shell type casting process technology, the material model is ZGD410-700, and the precision casting piece structure eliminates the problems of large welding stress, low strength and easy deformation of a stamping piece through a whole formed by welding a casting piece and a steel pipe, and the assembly size is ensured by the processing precision, so that the dimensional stability of a product is effectively improved; in addition, through the reasonable arrangement and optimization of the product structure, the material utilization rate is improved, the manufacturing cost of the product is effectively reduced, the competitiveness of the product is improved, and the performance requirements of non-automobile products are met to a great extent.
Referring to fig. 4 and 5, in particular, the upper cross member 21 includes a first casting 211, the first casting 211 and the second casting 212 are both bent, cavities are arranged in the first casting 211 and the second casting 212, a first opening 214 communicated with the cavities is formed in the upper end portion of the first casting 211, a second opening 215 communicated with the cavities is formed in the upper end portion of the second casting 212, a blocking cover 216 is arranged on the second opening 215, a welding portion 217 matched with the outer door frame 1 is arranged at the lower end portions of the first casting 211 and the second casting 212, the third casting 213 is hollow rod-shaped, two ends of the third casting 213 are respectively and integrally connected with the first casting 211 close to the first opening 214 and the second casting 212 close to the second opening 215, the first connecting piece 22 is hollow tubular, and two ends of the first connecting piece 22 are respectively welded with the first openings 214 on the two upper cross beam pieces 21.
Adopt above-mentioned technical scheme, through the hollow setting of first foundry goods 211, second foundry goods 212 and third foundry goods 213, and integrated into one piece between the three, for prior art's punching press formula steel sheet, the stability of product size has been improved, weld with first trompil 214 on two entablature pieces 21 respectively through the both ends of first connecting piece 22, make two symmetrical entablature pieces 21 of structure and first connecting piece 22 weld and form entablature assembly 2, weld part 217 through the lower tip setting of first foundry goods 211 and second foundry goods 212, can realize carrying out welded fastening with outer portal 1, because entablature assembly 2 only retrains fixedly to outer portal 1 upper end, consequently only weld first connecting piece 22 through between two first trompil 214 between two entablature pieces 21, can realize the load strength demand. Because the entablature piece 21 adopts tectorial membrane sand shell type casting process shaping, and entablature piece 21 adopts hollow structure, consequently first trompil 214 and second trompil 215 are used for the sand removal passageway of smart foundry goods, because carry out welded fastening through first connecting piece 22 between the first trompil 214, so, adopt fender lid 216 shutoff second trompil 215, prevent that steam from getting into entablature cavity and causing the corruption.
Of course, in order to improve the structural strength of the upper beam assembly 2, the first connecting member 22 may be welded between the two second openings 215, so that the two upper beam members 21 of the symmetrical structure are welded through parallel steel pipes, thereby improving the structural strength of the whole upper beam assembly 2, and also improving the load capacity of the upper beam assembly 2.
The welding portion 217 is arranged in an L-shaped notch and comprises a horizontal welding surface 2171 and a vertical welding surface 2172, the horizontal welding surface 2171 is used for being welded with the top surface of the outer door frame 1, the vertical welding surface 2172 is used for being welded with the side surface of the outer door frame 1, and chamfers are arranged at the edges of the horizontal welding surface 2171 and the vertical welding surface 2172. Through setting up horizontal weld surface 2171 and vertical weld surface 2172 for when entablature 21 and outer portal 1 left and right sides weld, also weld with outer portal 1 top surface, thereby eliminate welded stress between entablature 21 and the outer portal 1, also avoided taking place the condition of desoldering because of entablature unidirectional force, further improved assembly size precision. The edges of the horizontal and vertical weld surfaces 2171 and 2172 are both chamfered to increase the weld surface area and make the weld force more robust.
A first lightening hole 218 is formed in the lower end of the first casting 211, and a lifting hole 219 is formed in the first casting 211 above the first lightening hole 218. Through setting up first lightening hole 218, realize the lightweight design of entablature, reduced the manufacturing cost of product, improved material utilization, promoted the competitiveness of product. Through setting up hoisting hole 219, hoist when conveniently dismantling.
The second casting 212 where the second opening 215 is located is provided with an installation seat 230 for fixing an oil pipeline, and the installation seat 230 is further provided with a first installation hole 231 for installing a chain pull rod of a forklift. Adopt above-mentioned technical scheme, through setting up mount pad 230, can connect the stamping workpiece of fixed oil pipe way in mount pad 230 bottom, preferably, mount pad 230 bottom can fix the stamping workpiece through bolted connection, also can adopt the fixed stamping workpiece of welding form. The first mounting hole 231 is formed in the mounting seat 230, so that the chain pull rod of the forklift can be guided.
Referring to fig. 6 and 7, the lower cross member 31 includes a casting body 311, a supporting member 312 is connected below the casting body 311, a fitting surface 3120 welded to the top surface of the outer gantry 1 is provided at the bottom of the supporting member 312, a first connecting seat 313 and a second connecting seat 314 for assembling the second connecting member 32 are respectively provided at both ends of the top of the casting body 311, a snap ring 315 for assembling a drive axle is provided on the casting body 311 located between the first connecting seat 313 and the second connecting seat 314, a mounting plate 316 for mounting a forklift cylinder is provided below the second connecting seat 314, and a second mounting hole 3161 for fixing the cylinder is provided on the mounting plate 316.
By adopting the technical scheme, the casting body 311, the supporting piece 312, the first connecting seat 313, the second connecting seat 314, the snap ring 315 and the mounting plate 316 are integrally formed, namely, the precoated sand shell mold casting process is adopted for forming. Because the lower beam assembly 3 is used for fixing and restraining the outer gantry 1 and also used for fixing the oil cylinder and the drive axle, the load force required by the lower beam assembly 3 is higher than that required by the upper beam assembly 2. Therefore, in the embodiment of the utility model provides an in, lower beam member 31 adopts the shaping of solid foundry goods, has guaranteed under the prerequisite of size precision for lower beam member 31 forms the modularization, and lower beam member 31 through two symmetrical structure uses welding process with second connecting piece 32, thereby constitutes complete lower beam assembly 3. Compared with the prior art, the lower cross beam is integrally formed, the problem of dimensional accuracy caused by the traditional steel plate stamping is avoided, and meanwhile, stress of a stamping part during welding is eliminated by a precision casting.
Welding to the top surface of the outer gantry 1 can be achieved through the abutting surface 3120 of the bottom surface of the supporting member 312. The edge of the binding surface 3120 is also provided with a process chamfer, which improves the welding area. The second connecting piece 32 can be welded through the first connecting seat 313 and the second connecting seat 314 which are symmetrical, the clamping ring 315 is used for fixing a drive axle of a forklift, the mounting plate 316 is used for limiting and mounting the oil cylinder, and the oil cylinder can be mounted on the lower cross beam piece 31 through the second mounting hole 3161.
It should be noted that, in the embodiment of the present invention, the snap ring 315 on the lower beam member 31 is a semi-circular shape, and the screw hole site for fixing the other half of the snap ring is provided on the snap ring 315, so that the lower beam is formed by casting the coated sand shell mold, and the subsequent driving axle needs to be installed on the snap ring 315 of the lower beam member 31, so that the structure of the snap ring 315 is a half, and the driving axle can be conveniently installed in the snap ring 315 and then fastened through the other half of the snap ring.
The second connecting member 32 includes a seamless pipe 321 and a special pipe 322, a first inserting hole 3131 connected with the seamless pipe 321 is formed on the first connecting seat 313, and a second inserting hole 3141 connected with the special pipe 322 is formed on the second connecting seat 314. In this embodiment, the seamless pipe 321 and the special pipe 322 are both 45# steel pipes, and the special pipe 322 is used to avoid the position of the transaxle. The second connecting member 32 having a tubular structure can be easily inserted into the first and second plugging holes 3131 and 3141, thereby realizing welding of the steel pipe to the precision casting.
A U-shaped groove 3121 is formed in the middle of the supporting member 312, second lightening holes 3122 are respectively formed at two ends of the supporting member 312, and a third lightening hole 3111 is formed on the casting body 311 between the snap ring 315 and the second connecting seat 314. Through setting up U type groove 3121, second lightening hole 3122 and third lightening hole 3111, can realize the advantage of lower crossbeam spare 31 lightweight, reduced the manufacturing cost of product, improved material utilization, promoted the competitiveness of product.
A plurality of first reinforcing ribs 318 are arranged between the bottom of the casting body 311 and the supporting part 312, and at least one second reinforcing rib 317 is arranged between the clamping ring 315 and the second connecting seat 314. By providing the first reinforcing rib 318, the strength between the casting body 311 and the support member 312 is improved, the overall strength of the lower cross member 31 is improved, and the load of the lower cross member assembly 3 is further improved. Because the casting body 311 between the snap ring 315 and the second connecting seat 314 is provided with the third lightening hole 3111, the casting body 311 is designed in a light weight manner, and meanwhile, the strength of the snap ring 315 on the casting body 311 is improved by arranging the second reinforcing rib 317, and a stable constraint fixing force is provided for the drive axle.
Referring to fig. 8, at least two positioning columns 3121 are disposed on the attachment surface 3120, and the top surface of the outer door frame 1 is provided with positioning holes 100 matching with the positioning columns 3121. Through the cooperation of reference column 3121 and locating hole 100, be convenient for the accurate and outer portal 1 of bottom end rail assembly 3 fix a position, further improve follow-up hydro-cylinder and transaxle assembly precision.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A forklift mast assembly, comprising:
an outer gantry (1);
the upper cross beam assembly (2) comprises two upper cross beam pieces (21) with symmetrical structures, and a first connecting piece (22) is connected between the two upper cross beam pieces (21);
the lower cross beam assembly (3) comprises two lower cross beam pieces (31) with symmetrical structures, and a second connecting piece (32) is connected between the two lower cross beam pieces (31);
the upper beam piece (21) is a precision casting with a hollow interior, the lower beam piece (31) is a solid precision casting, and the upper beam piece (21) and the lower beam piece (31) are respectively connected with the outer door frame (1) in a welding mode.
2. The forklift mast assembly of claim 1, wherein: the upper cross beam piece (21) comprises a first casting piece (211), a second casting piece (212) and a third casting piece (213), the first casting piece (211) and the second casting piece (212) are bent, cavities are arranged in the first casting piece (211) and the second casting piece (212), a first opening (214) communicated with the cavities is formed in the upper end portion of the first casting piece (211), a second opening (215) communicated with the cavities is formed in the upper end portion of the second casting piece (212), a blocking cover (216) is arranged on the second opening (215), a welding portion (217) matched with the outer door frame (1) is arranged at the lower end portions of the first casting piece (211) and the second casting piece (212) respectively, the third casting piece (213) is in a hollow rod shape, two ends of the third casting piece (213) are integrally connected with the first casting piece (211) close to the first opening (214) and the second casting piece (212) close to the second opening (215), the first connecting piece (22) is in a hollow tubular shape, and two ends of the first connecting piece (22) are respectively welded with the first open holes (214) on the two upper cross beam pieces (21).
3. The forklift mast assembly of claim 2, wherein: the welding part (217) is arranged in an L-shaped notch and comprises a horizontal welding surface (2171) and a vertical welding surface (2172), the horizontal welding surface (2171) is used for welding with the top surface of the outer door frame (1), the vertical welding surface (2172) is used for welding with the side surface of the outer door frame (1), and chamfers are arranged at the edges of the horizontal welding surface (2171) and the vertical welding surface (2172).
4. The forklift mast assembly of claim 2, wherein: the lower end part of the first casting (211) is provided with a first lightening hole (218), and a hoisting hole (219) is arranged on the first casting (211) above the first lightening hole (218).
5. The forklift mast assembly of claim 2, wherein: and a mounting seat (230) for fixing an oil pipeline is arranged on the second casting (212) where the second opening (215) is located, and a first mounting hole (231) for mounting a forklift chain pull rod is further formed in the mounting seat (230).
6. The forklift mast assembly of claim 1, wherein: lower crossbeam spare (31) is including foundry goods body (311), the below of foundry goods body (311) is connected with support piece (312), support piece (312) bottom be provided with outer portal (1) top surface welded binding face (3120), first connecting seat (313) and second connecting seat (314) that are used for assembling second connecting piece (32) are offered respectively to the top both ends of foundry goods body (311), are provided with snap ring (315) that are used for assembling the transaxle on foundry goods body (311) at place in the middle of first connecting seat (313) and second connecting seat (314), and second connecting seat (314) below is provided with mounting panel (316) that are used for installing the fork truck hydro-cylinder, offer second mounting hole (3161) that are used for fixed hydro-cylinder on mounting panel (316).
7. The forklift mast assembly of claim 6, wherein: the second connecting piece (32) comprises a seamless pipe (321) and a special-shaped pipe (322), a first plug-in hole (3131) connected with the seamless pipe (321) is formed in the first connecting seat (313), and a second plug-in hole (3141) connected with the special-shaped pipe (322) is formed in the second connecting seat (314).
8. The forklift mast assembly of claim 6, wherein: the middle of the supporting piece (312) is provided with a U-shaped groove, two ends of the supporting piece (312) are respectively provided with a second lightening hole (3122), and a third lightening hole (3111) is formed in the casting body (311) between the clamping ring (315) and the second connecting seat (314).
9. The forklift mast assembly of claim 8, wherein: a plurality of first reinforcing ribs (318) are arranged between the bottom of the casting body (311) and the supporting piece (312), and at least one second reinforcing rib (317) is arranged between the clamping ring (315) and the second connecting seat (314).
10. The forklift mast assembly of claim 6, wherein: the binding surface (3120) is provided with at least two positioning columns (3121), and the top surface of the outer door frame (1) is provided with a positioning hole (100) matched with the positioning columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136188.XU CN212503836U (en) | 2020-06-18 | 2020-06-18 | Forklift portal frame assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136188.XU CN212503836U (en) | 2020-06-18 | 2020-06-18 | Forklift portal frame assembly |
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| CN212503836U true CN212503836U (en) | 2021-02-09 |
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| CN202021136188.XU Active CN212503836U (en) | 2020-06-18 | 2020-06-18 | Forklift portal frame assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111776993A (en) * | 2020-06-18 | 2020-10-16 | 东风精密铸造有限公司 | Forklift portal frame assembly |
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2020
- 2020-06-18 CN CN202021136188.XU patent/CN212503836U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111776993A (en) * | 2020-06-18 | 2020-10-16 | 东风精密铸造有限公司 | Forklift portal frame assembly |
| CN111776993B (en) * | 2020-06-18 | 2024-09-24 | 东风精密铸造有限公司 | Fork truck portal assembly |
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