Forklift

Abstract

The forklift comprises a bracket, stand columns and telescopic forks, the forks are arranged on the bracket at intervals, the sections of the stand columns are I-shaped, the stand columns are arranged at intervals, the tops of the stand columns are connected through a cross beam, carrier rollers are arranged on the bracket, the carrier rollers are clamped with the inner side faces of the stand columns, an installation base is arranged on the cross beam, and chain wheels are arranged on the installation base. A transmission chain is meshed on the chain wheel, one end of the transmission chain is fixedly connected with the bracket, and the other end of the transmission chain is connected with a connector; and an L-shaped suspension arm is arranged on the cross beam. According to the forklift, the transmission chain is adopted to pull the bracket to move up and down so that the pallet fork on the bracket can ascend and descend, meanwhile, the pressure sensor on the transmission chain is combined, the load directly applied to the transmission chain can be rapidly measured, and the reliability can be obviously improved. Meanwhile, a common pallet fork with a fixed length is replaced by the telescopic pallet fork, and the length of the pallet fork can be adjusted according to the width of the goods, so that the stability of goods transportation is ensured, and the safety of transportation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift door frame lifting, and more specifically, to a forklift. Background Art

[0002] A forklift is a special equipment that uses a fork as a pick-up device and can carry goods point-to-point. In cold storage scenarios, in order to improve warehouse space utilization, double-deep shelves are usually used, and the corresponding forklifts are usually equipped with scissor forks for picking up and placing goods at the second deepest position. Currently, the scissor-fork forward-moving vehicles on the market are generally driven manually, which requires high operating skills from forklift drivers.

[0003] If the forklift's load exceeds the permitted weight, there is a risk of a safety accident. Therefore, accurately obtaining the weight of the cargo on the forklift is a very important factor in preventing safety accidents.

[0004] In the prior art, when a forklift is loaded with cargo, the pressure of the working oil formed in the lifting cylinder is usually obtained, the pressure of the working oil is measured, and the pressure of the working oil is converted into weight to calculate the weight of the cargo, so as to achieve the purpose of monitoring the cargo load on the forklift.

[0005] However, the method of converting the pressure of the hydraulic oil into weight as described above has a problem that the response is slow and the reliability shows an error of about 5%.

[0006] On the other hand, the fork length of traditional forklifts is relatively fixed, which means that when the width of the cargo changes, especially increases, it is easy to cause the center of gravity of the cargo to be unstable during transportation, affecting the transportation effect.

[0007] Therefore, it is necessary to propose a forklift to solve the above-mentioned technical problems. Utility Model Content

[0008] The utility model provides a forklift to solve the problems that the existing forklift has slow cargo weight recognition speed and short cargo forks, which leads to unstable center of gravity of cargo transportation and affects transportation safety.

[0009] According to one aspect of the utility model, there is provided a bracket, a column and a telescopic fork, the forks are installed on the bracket at intervals, the column has an I-shaped cross-section and is arranged at intervals, a seat is provided at the bottom of the column, a hydraulic cylinder is installed on the seat, the end of the hydraulic cylinder is connected to a crossbeam, the crossbeam is slidably installed between the columns, a roller is provided on the bracket, the roller is engaged with the inner side surface of the column, a mounting seat is provided on the crossbeam, a sprocket is installed on the mounting seat, a transmission chain is meshed on the sprocket, one end of the transmission chain is fixedly connected to the bracket, and the other end of the transmission chain is connected to a connector; an L-shaped boom is installed on the crossbeam, the connector is inserted into the boom through a splice rod, the bottom of the splice rod is locked by a nut, a pressure sensor is also inserted into the splice rod, and the pressure sensor is located between the boom and the nut.

[0010] Preferably, based on the above solution, a detachable latch is provided at the end of the plug rod.

[0011] Preferably, based on the above solution, a first column and a second column are provided on the plug-in rod, and the first column and the second column are respectively provided on two sides of the pressure sensor.

[0012] Preferably, based on the above solution, the fork comprises an L-shaped mounting body and an extension plate, the extension plate has a rectangular cross section and an opening at one end, and the mounting body is plugged into the end of the extension plate.

[0013] Preferably, based on the above solution, the open end of the extension plate extends outward to form a mounting ear plate, and the mounting ear plate is provided with a mounting hole, and the mounting holes are connected by a connecting shaft in a locking manner.

[0014] The utility model discloses a forklift, which uses a transmission chain to pull a bracket up and down to realize the lifting and lowering of the fork on the bracket, and at the same time combines with a pressure sensor on the transmission chain to quickly measure the load directly applied to the transmission chain. Therefore, compared with the traditional measurement of the hydraulic pressure of the lifting cylinder, the reliability can be significantly improved.

[0015] At the same time, the ordinary fixed-length forks are replaced with retractable forks, and the length of the forks can be adjusted according to the width of the goods to ensure the stability of cargo transfer and improve the safety of transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of a forklift of the utility model;

[0018] Figure 2 Another schematic diagram of the forklift of the utility model;

[0019] Figure 3 It is an exploded schematic diagram of the connector of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the fork of the utility model;

[0021] Description of Figure Numbers:

[0022] Bracket 1, roller 11, column 2, seat body 21, hydraulic cylinder 22, beam 23, mounting seat 24, sprocket 25, transmission chain 26, connector 27, boom 28, plug rod 29, nut 30, pressure sensor 31, latch 32, first column 33, second column 34, fork 4, mounting body 41, extension plate 42. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0025] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0026] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] In the embodiments shown in the drawings, the directions (such as up, down, left, right, front and back) used to explain the structure and movement of the various components of the present invention are not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the positions of the components changes, the directions also change accordingly.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] See also Figure 1 , and combined with Figure 2 and Figure 3 As shown, a forklift of the utility model comprises a bracket 1, a column 2 and a telescopic fork 4, the fork 4 is installed on the bracket 1 at intervals, the column 2 is made of H-shaped steel or I-shaped steel, the columns 2 are arranged at intervals, the bottoms of the columns 2 are connected through a seat body 21, a hydraulic cylinder 22 is arranged on the seat body 21, and two hydraulic cylinders 22 are preferably used. The telescopic rod of the hydraulic cylinder 22 is connected to the cross beam 23 at the top of the column 2, and the cross beam 23 is provided with a guide wheel adapted to the outer side groove of the column 2. When the hydraulic cylinder 22 is working, it can drive the cross beam 23 to move on the column 2.

[0031] The bracket 1 of the utility model is provided with a roller 11, which is engaged with the inner side of the column 2, and a mounting seat 24 is provided on the crossbeam 23. A sprocket 25 is installed on the mounting seat 24, and a transmission chain 26 is meshed on the sprocket 25. One end of the transmission chain is fixedly connected to the bracket 1, and the other end of the transmission chain 26 is connected to a connector 27.

[0032] Please continue reading Figure 2 As shown, an L-shaped suspension arm 28 is installed on the crossbeam 23 of the utility model, and a connector 27 is inserted into the suspension arm 28 through a plug-in rod 29. The bottom of the plug-in rod 29 is locked by a nut 30. A pressure sensor 31 is also inserted into the plug-in rod 29, and the pressure sensor 31 is located between the suspension arm 28 and the nut 30.

[0033] When in use, the hydraulic cylinder 22 drives its telescopic rod to extend and retract, driving the crossbeam 23 to move up and down, thereby changing the relative height between the sprocket 25 and the column 2, so as to change the length of the two sides of the transmission chain 26 on both sides of the sprocket 25, so as to achieve the lifting or lowering of the bracket 1 at the end of the transmission chain 26, and achieve the purpose of lifting or lowering the goods on the fork 4. At the same time, due to the different loads, this leads to different tensions on the transmission chain 26, which leads to different values ​​obtained by the pressure sensor 31 on the connector 27. Therefore, the weight of the goods can be quickly obtained, and compared with the traditional measurement of the hydraulic pressure of the lifting cylinder, the reliability can be significantly improved.

[0034] In order to prevent the nut 30 on the plug rod 29 from loosening and causing safety accidents, the utility model also provides a detachable plug pin 32 at the end of the plug rod 29 to achieve the purpose of secondary fixing and locking.

[0035] The plug-in rod 29 of the present invention is provided with a first column 33 and a second column 34 , and the first column 33 and the second column 34 are respectively provided on two sides of the pressure sensor 31 .

[0036] Specifically, the fork 4 of the utility model includes an L-shaped mounting body 41 and an extension plate 42 hinged on the mounting body. The cross-section of the extension plate 42 is rectangular and one end is open. The mounting body is inserted into the extension plate 42. The extension plate 42 can move relative to the mounting body 41. Mounting ear plates are provided on both sides of the extension plate 42. Mounting holes are provided on the mounting ear plates 42, and the mounting holes are connected by a connecting shaft.

[0037] When the width of the goods is not large, the overlapping length of the extension plate 42 and the mounting body 41 is large, and the whole is short. When the width of the goods is large, the extension plate can be pulled out relative to the mounting body 41 to shorten the overlapping length between the two, thereby forming support for the goods. It is convenient and quick to use and ensures the stability of transportation. For the specific structure, please refer to Figure 4 shown.

[0038] A forklift of the utility model adopts a transmission chain 26 to pull the bracket 1 up and down to realize the lifting and lowering of the fork 4 on the bracket 1. At the same time, combined with the pressure sensor 31 on the transmission chain 26, the load directly applied to the transmission chain 26 can be quickly measured. Therefore, compared with the traditional measurement of the hydraulic pressure of the lifting cylinder, the reliability can be significantly improved.

[0039] At the same time, the ordinary fixed-length fork 4 is replaced with a retractable fork 4, and the length of the fork 4 can be adjusted according to the width of the goods to ensure the stability of the goods transfer and improve the safety of the transfer.

[0040] Finally, the method of this application is only a preferred implementation scheme and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A forklift, characterized in that: The invention comprises a bracket, a column and a telescopic fork, wherein the forks are installed on the bracket at intervals, the column has an I-shaped cross-section and is arranged at intervals, a seat body is provided at the bottom of the column, a hydraulic cylinder is installed on the seat body, the end of the hydraulic cylinder is connected to a cross beam, the cross beam is slidably installed between the columns, a roller is provided on the bracket, the roller is engaged with the inner side surface of the column, a mounting seat is provided on the cross beam, a sprocket is installed on the mounting seat, a transmission chain is meshed on the sprocket, one end of the transmission chain is fixedly connected to the bracket, and the other end of the transmission chain is connected to a connector; an L-shaped boom is installed on the cross beam, the connector is inserted into the boom through a splicing rod, the bottom of the splicing rod is locked by a nut, a pressure sensor is also inserted into the splicing rod, and the pressure sensor is located between the boom and the nut.

2. A forklift according to claim 1, characterized in that: A detachable latch is arranged at the end of the plug-in rod.

3. A forklift according to claim 1, characterized in that: The plug-in rod is provided with a first column and a second column, and the first column and the second column are respectively provided on two sides of the pressure sensor.

4. A forklift according to claim 1, characterized in that: The fork comprises an L-shaped mounting body and an extension plate. The extension plate has a rectangular cross section and an opening at one end. The mounting body is plugged into the end of the extension plate.

5. A forklift according to claim 4, characterized in that: The open end of the extension plate extends outward to form a mounting ear plate, and the mounting ear plate is provided with a mounting hole, and the mounting holes are connected by a connecting shaft in a locking manner.

Images