CN210127067U - Forklift portal frame - Google Patents

Abstract

The utility model discloses a fork truck portal, include: the door frame assembly is formed with a door frame window, wherein, the door frame assembly is in the outside of door frame window, the door frame assembly is in one side fixed connection fork truck accessory near the fork truck operation panel. The utility model discloses a fork truck portal, simple structure is practical, through installing the outside at the portal window with the setting of fork truck accessory, has avoided the fork truck accessory to sheltering from of portal window, has improved the field width in driver the place ahead when fork truck moves and unloads, has promoted the convenience of fork truck operation.

Description

Forklift portal frame

Technical Field

The utility model relates to a fork truck technical field especially relates to a fork truck portal.

Background

Fork truck has been widely used in the field of warehouse logistics, and people also have higher and higher requirements for the function of fork truck. The mechanism of the forklift for lifting the goods is called a forklift portal frame, also called a portal frame, and is a main bearing structure of the forklift fetching device. The forklift truck mainly comprises an inner gantry, an outer gantry, a fork frame, a fork, a chain wheel, a chain, a lifting oil cylinder, an inclined oil cylinder and the like.

In practical application, various attachments can be assembled on the forklift, and a series of parts such as pipe wheels, chain wheels and the like are installed on the inner side of the gantry, so that the condition of shielding the visual field occurs, the fork is difficult to see by an operator, the operation is inconvenient, the visual field width in front of the operator is influenced when the forklift runs, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a fork truck portal has solved among the current fork truck portal accessory and has installed in the portal inboard, leads to the portal window to narrow down, shelters from the operator field of vision, the inconvenient scheduling problem of operation.

An aspect of the utility model provides a fork truck portal, include: the portal assembly is provided with a portal window, wherein the outer side of the portal window is fixedly connected with a forklift attachment at one side close to the forklift console.

Optionally, the mast assembly comprises an outer mast, a middle mast, an inner mast, and a fork carriage; the outer gantry, the middle gantry and the inner gantry are respectively provided with two side vertical plates, and sliding grooves are formed in the inner sides of the side vertical plates;

the fork frame is arranged on the front side of the inner gantry and is in sliding connection with the inner gantry; the inner door frame is arranged on the inner side of the middle door frame and is in sliding connection with the middle door frame; the middle door frame is arranged on the inner side of the outer door frame and is connected with the outer door frame in a sliding mode.

Optionally, the forklift attachment comprises: a third sprocket and a fourth sprocket; the middle portal frame is provided with a first side vertical plate and a second side vertical plate, and the third chain wheel and the fourth chain wheel are respectively arranged on one sides, far away from the fork frame, of the first side vertical plate and the second side vertical plate.

Optionally, the first side riser and the second side riser are respectively and fixedly connected with a first bearing and a second bearing above the side end face far away from the fork carriage, and the third chain wheel and the fourth chain wheel are respectively mounted on the middle door frame through the first bearing and the second bearing.

Optionally, the forklift attachment further comprises: a first tube wheel and a second tube wheel; the middle door frame is provided with an upper cross beam, and a first pipe wheel and a second pipe wheel are fixedly connected to the two ends, close to the first side vertical plate and the second side vertical plate, of the lower portion of the upper cross beam respectively;

the first pipe wheel and the third chain wheel are arranged in parallel and overlapped in the axial direction, and the second pipe wheel and the fourth chain wheel are arranged in parallel and overlapped in the axial direction.

Optionally, the third sprocket and the fourth sprocket are movably connected with a third chain and a fourth chain respectively;

the third chain is walked around outer portal and interior portal are connected respectively to the both ends of third sprocket, the fourth chain is walked around outer portal and interior portal are connected respectively to the both ends of fourth sprocket.

Optionally, the gantry assembly further comprises a front lifting oil cylinder, wherein the bottom of the front lifting oil cylinder is fixedly connected with the lower cross beam of the inner gantry; and a first chain wheel and a second chain wheel are fixedly connected above the front lifting oil cylinder.

Optionally, the first chain wheel and the second chain wheel are movably connected with a first chain and a second chain respectively;

the first chain is wound around two ends of the first chain wheel and is connected with the fork frame and the inner door frame respectively, and the second chain is wound around two ends of the second chain wheel and is connected with the fork frame and the inner door frame respectively.

Optionally, the mast assembly further comprises: a first rear lift cylinder and a second rear lift cylinder, wherein,

the bottom ends of the first rear lifting oil cylinder and the second rear lifting oil cylinder are symmetrically connected to two ends of a lower cross beam of the outer gantry;

and the top ends of the piston rods of the first rear lifting oil cylinder and the second rear lifting oil cylinder are respectively connected with two ends of an upper cross beam of the middle portal frame.

Optionally, the diameter lengths of the third sprocket and the fourth sprocket are 130mm to 140 mm.

The utility model discloses a beneficial effect of embodiment is:

among the above-mentioned scheme, install in the outside of portal window through setting up the fork truck accessory, simple structure is practical, has avoided the fork truck accessory to the sheltering from of portal window, has improved the field of vision width in driver the place ahead when fork truck moves and unloads, has promoted the convenience of fork truck operation.

Drawings

Fig. 1 shows a schematic structural diagram of a three-section fully automatic forklift gantry according to an embodiment of the present invention;

description of reference numerals:

11. an outer gantry;

12. a middle door frame;

13. an inner gantry;

14. a front lifting oil cylinder;

151. a first rear lift cylinder;

152. a second rear lifting cylinder;

161. a first sprocket;

162. a second sprocket;

171. a third sprocket;

172. a fourth sprocket;

181. a first chain;

182. a second chain;

191. a third chain;

192. a fourth chain;

201. a first tube wheel;

202. a second tube wheel.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, an embodiment of the utility model provides a forklift mast, include: the portal assembly is provided with a portal window, wherein the outer side of the portal window is fixedly connected with a forklift attachment at one side close to the forklift console.

In this embodiment, install the outside at the portal window through setting up the fork truck accessory, avoided the fork truck accessory to the sheltering from of portal window, improved the field width in driver the place ahead when fork truck moves and unloads, promoted the convenience of fork truck operation, and simple structure is practical.

In the above embodiment, the mast assembly includes an outer mast 11, a middle mast 12, an inner mast 13, and a fork carriage; the outer gantry 11, the middle gantry 12 and the inner gantry 13 are respectively provided with two side vertical plates, and the inner sides of the side vertical plates are provided with sliding grooves; the fork carriage is arranged on the front side of the inner gantry 13 and is in sliding connection with the inner gantry 13; the inner gantry 13 is arranged at the inner side of the middle gantry 12 and is connected with the middle gantry 12 in a sliding manner; the middle gantry 12 is arranged inside the outer gantry 11 and is slidably connected with the outer gantry 11.

In this embodiment, the forklift mast is a three-section fully-free mast, and includes an outer mast 11, a middle mast 12, an inner mast 13 and a fork carriage, wherein sliding grooves are respectively formed in inner sides of two side vertical plates of the outer mast 11, sliding grooves are respectively formed in inner sides of two side vertical plates of the middle mast 12, sliding grooves are respectively formed in inner sides of two side vertical plates of the inner mast 13, and the fork carriage is arranged at a front side of the inner mast 13 and is slidably connected with the inner mast 13 through the sliding grooves in the inner sides of the two side vertical plates of the inner mast 13; the inner gantry 13 is arranged on the inner side of the middle gantry 12 and is connected with the middle gantry 12 in a sliding mode through sliding grooves in the inner sides of vertical plates on two sides of the middle gantry 12; the middle gantry 12 is arranged inside the outer gantry 11 and is slidably connected with the outer gantry 11. The slide slots may provide more stability to the relative position of the sliding door frames and the fork carriage during sliding up and down.

Further, the forklift attachment includes: third and fourth sprockets 171 and 172; the middle gantry 12 is provided with a first side vertical plate and a second side vertical plate, and the third chain wheel 171 and the fourth chain wheel 172 are respectively arranged on one sides of the first side vertical plate and the second side vertical plate, which are far away from the fork carriage.

The first side vertical plate and the second side vertical plate are respectively and fixedly connected with a first bearing and a second bearing above the side end face far away from the fork frame, and the third chain wheel 171 and the fourth chain wheel 172 are respectively installed on the middle door frame 12 through the first bearing and the second bearing.

In this embodiment, a first bearing and a second bearing are respectively installed above one side of two side vertical plates in the middle door frame 12 close to the forklift operation platform, and further, a third chain wheel 171 is installed and fixed through the first bearing, and a fourth chain wheel 172 is installed and fixed through the second bearing, so that the third chain wheel 171 and the fourth chain wheel 172 are transversely arranged on the side surface of the middle door frame 12, the shielding of the third chain wheel 171 and the fourth chain wheel 172 on a door frame window is effectively avoided, and the view field in front of an operator is improved. Meanwhile, the third chain wheel 171 and the fourth chain wheel 172 which are transversely arranged and installed can realize the effect of hiding and arranging the chain which needs to be connected with the third chain wheel 171 and the fourth chain wheel 172, the shielding of the chain on a window of the portal frame is further reduced, the operation visual field is improved, and the longitudinal space of the portal frame of the forklift is saved.

Further, the forklift attachment further includes: a first pipe wheel 201 and a second pipe wheel 202; the middle portal 12 is provided with an upper cross beam, and a first pipe wheel 201 and a second pipe wheel 202 are respectively and fixedly connected to two ends, close to the first side vertical plate and the second side vertical plate, below the upper cross beam;

the first tube pulley 201 and the third sprocket 171 are arranged in parallel and overlapped in the axial direction, and the second tube pulley 202 and the fourth sprocket 172 are arranged in parallel and overlapped in the axial direction.

In this embodiment, the upper beam of the middle gantry 12 is a protruding arc-shaped beam, a first pipe wheel 201 and a second pipe wheel 202 are respectively and fixedly connected below the beam and near two ends of the first side plate and the second side plate, preferably, the first pipe wheel 201 and the second pipe wheel 202 can be respectively suspended and fixed below the upper beam of the middle gantry 12 through bolts, and the first pipe wheel 201 and the second pipe wheel 202 are transversely arranged, so that the first pipe wheel 201 and the third sprocket 171 are arranged in parallel and overlapped in the axial direction, and the second pipe wheel 202 and the fourth sprocket 172 are arranged in parallel and overlapped in the axial direction. Wherein, transversely stack first pipe wheel 201 and the third sprocket 171 that sets up side by side, can effectively realize reducing the shared space of first pipe wheel 201 and second pipe wheel 202, and avoided first pipe wheel 201 and second pipe wheel 202 to the sheltering from of portal window, can realize hiding the setting of accessories such as oil pipe simultaneously, further saved vertical space, improved the operator and operated the field of vision in portal the place ahead, it is more convenient to make the operation.

In the above embodiment, the gantry assembly further includes a front lift cylinder 14, wherein the bottom of the front lift cylinder 14 is fixedly connected with the lower beam of the inner gantry 13; a first chain wheel 161 and a second chain wheel 162 are fixedly connected above the front lifting cylinder 14.

The first chain wheel 161 and the second chain wheel 162 are movably connected with a first chain 181 and a second chain 182 respectively; the first chain 181 bypasses both ends of the first sprocket 161 to connect the fork frame and the inner mast 13, respectively, and the second chain 182 bypasses both ends of the second sprocket 162 to connect the fork frame and the inner mast 13, respectively.

In this embodiment, when the front lifting cylinder 14 is lifted, the first chain wheel 161 and the second chain wheel 162 are driven to lift, and further the inner gantry 13 is driven to lift by the first chain 181 and the second chain 182.

In a preferred embodiment, the mast assembly further comprises: the lifting device comprises a first rear lifting cylinder 151 and a second rear lifting cylinder 152, wherein the bottom ends of the first rear lifting cylinder 151 and the second rear lifting cylinder 152 are symmetrically connected to two ends of a lower cross beam of the outer gantry 11; the top ends of the piston rods of the first rear lifting cylinder 151 and the second rear lifting cylinder 152 are respectively connected with two ends of the upper beam of the middle gantry 12.

Specifically, a third chain 191 and a fourth chain 192 are movably connected to the third sprocket 171 and the fourth sprocket 172 respectively; the third chain 191 bypasses two ends of the third chain wheel 171 and is respectively connected with the outer door frame 11 and the inner door frame 13, and the fourth chain 192 bypasses two ends of the fourth chain wheel 172 and is respectively connected with the outer door frame 11 and the inner door frame 13.

In this embodiment, after the current lift cylinder 14 described in the previous embodiment is raised to the topmost position, the first rear lift cylinder 151 and the second rear lift cylinder 152 are raised. When the first rear lifting oil cylinder 151 and the second rear lifting oil cylinder 152 lift, the middle gantry 12 is driven to lift, the middle gantry 12 lifts and simultaneously drives the third chain wheel 171 and the fourth chain wheel 172 mounted on the middle gantry 12 to lift, and when the third chain wheel 171 and the fourth chain wheel 172 lift, the inner gantry 13 is further driven to lift by driving the third chain 191 and the fourth chain 192.

Further, the diameter and length of the third sprocket 171 and the fourth sprocket 172 is 130mm to 140 mm.

In this embodiment. The third sprocket 171 and the fourth sprocket 172 are lengthened in diameter and length, and have a length range of 130mm to 140mm, and preferably, the third sprocket 171 and the fourth sprocket 172 have a diameter and length of 130 mm. The third sprocket 171 and the fourth sprocket 172 with enlarged diameters can effectively reduce abnormal noise in the moving process of the third chain 191 and the fourth chain 192, so that the third chain 191 and the fourth chain 192 are more smoothly matched with the third sprocket 171 and the fourth sprocket 172.

It should be noted that, in order to improve the view field in front of the forklift mast, the entire mast is designed to be widened in the present embodiment, the width range of the mast with the widened design is 620mm to 694mm, which can be selected according to actual needs, and 694mm is preferred here, and is not limited here.

The utility model provides a fork truck portal arranges on the both sides limit of well portal 12 through fork truck accessories such as with sprocket and pipe wheel, no longer installs in portal assembly inboard, has realized the transversal arrangement of chain and pipe wheel, and the accessory pipeline wheel arranges side by side on well portal 12 with the sprocket simultaneously, realizes oil pipe's transversal arrangement, and a series of parts such as pipe wheel, sprocket all install the rear at the portal like this, make fork truck have wideer field of vision scope. The visual field width in operator the place ahead has been increased, has improved the convenience of fork truck operation, greatly increased the visual field width in driver the place ahead and the visual field when handling goods, and the contrast original product visual field improves 60%, makes things convenient for the operation more. The utility model discloses scheme simple structure, practicality have spreading value.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Claims (9)

1. A forklift mast, comprising: a portal assembly formed with a portal window, wherein,

the side, close to the forklift operation table, of the portal assembly is fixedly connected with a forklift attachment at the outer side of the portal window;

the mast assembly comprises an outer mast (11), a middle mast (12), an inner mast (13) and a fork carriage;

the outer gantry (11), the middle gantry (12) and the inner gantry (13) are respectively provided with two side vertical plates, and sliding grooves are formed in the inner sides of the side vertical plates;

the fork frame is arranged on the front side of the inner gantry (13) and is connected with the inner gantry (13) in a sliding mode; the inner gantry (13) is arranged on the inner side of the middle gantry (12) and is in sliding connection with the middle gantry (12); the middle portal frame (12) is arranged on the inner side of the outer portal frame (11) and is connected with the outer portal frame (11) in a sliding mode.

2. The forklift mast of claim 1, wherein said forklift attachment comprises: a third sprocket (171) and a fourth sprocket (172); the middle portal frame (12) is provided with a first side vertical plate and a second side vertical plate, and the third chain wheel (171) and the fourth chain wheel (172) are respectively arranged on one sides, far away from the fork frame, of the first side vertical plate and the second side vertical plate.

3. The forklift mast as defined in claim 2, in which said first and second side plates are fixedly connected with a first and second bearing respectively above the side end faces remote from the fork carriage, said third and fourth sprockets (171, 172) being mounted on said mid mast (12) by means of said first and second bearing respectively.

4. The forklift mast of claim 3, said forklift attachment further comprising: a first pipe wheel (201) and a second pipe wheel (202); the middle portal frame (12) is provided with an upper cross beam, and a first pipe wheel (201) and a second pipe wheel (202) are fixedly connected to the two ends, close to the first side vertical plate and the second side vertical plate, of the lower portion of the upper cross beam respectively;

the first pipe wheel (201) and the third chain wheel (171) are arranged in parallel and overlapped in the axial direction, and the second pipe wheel (202) and the fourth chain wheel (172) are arranged in parallel and overlapped in the axial direction.

5. The forklift mast as claimed in claim 4, characterised in that said third sprocket (171) and said fourth sprocket (172) are respectively articulated with a third chain (191) and a fourth chain (192);

the two ends of the third chain (191) bypassing the third chain wheel (171) are respectively connected with the outer door frame (11) and the inner door frame (13), and the two ends of the fourth chain wheel (172) bypassing the fourth chain wheel (192) are respectively connected with the outer door frame (11) and the inner door frame (13).

6. The forklift mast as claimed in claim 1, wherein the mast assembly further comprises a front lift cylinder (14), wherein the bottom of the front lift cylinder (14) is fixedly connected with the lower beam of the inner mast (13); and a first chain wheel (161) and a second chain wheel (162) are fixedly connected above the front lifting oil cylinder (14).

7. The forklift mast as claimed in claim 6, wherein said first sprocket (161) and said second sprocket (162) are respectively articulated with a first chain (181) and a second chain (182);

the first chain (181) bypasses two ends of the first chain wheel (161) to be connected with the fork frame and the inner gantry (13) respectively, and the second chain (182) bypasses two ends of the second chain wheel (162) to be connected with the fork frame and the inner gantry (13) respectively.

8. The forklift mast of claim 1, said mast assembly further comprising: a first rear lift cylinder (151) and a second rear lift cylinder (152), wherein,

the bottom ends of the first rear lifting oil cylinder (151) and the second rear lifting oil cylinder (152) are symmetrically connected to two ends of a lower cross beam of the outer gantry (11);

the top ends of piston rods of the first rear lifting oil cylinder (151) and the second rear lifting oil cylinder (152) are respectively connected with two ends of an upper cross beam of the middle gantry (12).

9. The forklift mast as claimed in claim 2, characterised in that said third sprocket (171) and said fourth sprocket (172) have a diameter length of between 130mm and 140 mm.

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