Forklift gantry chain seat and forklift

Abstract

The invention relates to a forklift portal frame chain seat and a forklift, which are used for driving a forklift portal frame to ascend and descend on the forklift and comprise a base connected with an oil cylinder, a chain assembly, a guide assembly and a correcting assembly. The oil cylinder oil pipe is arranged in the first limiting channel on the chain assembly, the oil cylinder oil pipe is preliminarily limited through the first limiting channel on the premise that the structural strength of the chain assembly is not affected, and the oil cylinder oil pipe can be further limited by matching the second limiting channel with the first limiting channel; the chain assembly is arranged on the chain wheel, the limiting effect on the oil cylinder oil pipe is improved, the oil cylinder oil pipe cannot be twisted, meanwhile, the chain is arranged on the chain wheel, the chain wheel can be used for limiting the chain assembly, and the limiting effect on the oil cylinder oil pipe can be improved; and the correcting assembly is driven to stir the oil cylinder oil pipe which does not enter the first limiting channel and the second limiting channel, so that the oil cylinder oil pipe is further prevented from being twisted in the moving process.

Description

Technical Field

[0001] The present application relates to the technical field of forklifts, and in particular to a forklift mast chain seat and a forklift. Background Art

[0002] A forklift is an industrial handling vehicle, which refers to various wheeled handling vehicles that are used for loading and unloading, stacking and short-distance transportation of palletized goods. They are often used to transport large objects in warehouses and are usually powered by a fuel engine or battery.

[0003] The existing traditional structure of the forklift mast lifting chain seat is a plate-type holed structure, which is connected to the chain by a special cylindrical special link joint through a pin shaft. Generally, a chain is set, one end of the chain is fixed to the forklift, and the other end is fixed to the forklift mast, and the chain seat is lifted by the cylinder, so that the chain pulls the forklift mast to rise.

[0004] When the gantry moves, the chain is not tightly matched with the chain seat during movement, which causes the chain to twist. The two oil pipes are also prone to twist during movement. Therefore, it is necessary to limit the chain and the oil pipe so that they cannot detach from the original track during movement. Summary of the invention

[0005] The present application provides a forklift mast chain seat and a forklift, which can solve the problem that the existing forklift mast chain seat cannot limit both the chain and the oil pipe.

[0006] The technical solution of the present application is as follows: A forklift mast chain seat, used to drive the forklift mast to rise and fall on the forklift, comprising: A base connected to the oil cylinder, sprockets are rotatably connected to both sides of the base, and the lower end of the base is fixedly connected to the driving shaft of the oil cylinder; A chain assembly, one end of which is connected and fixed to the forklift, and the other end of which passes around the sprocket and is connected and fixed to the forklift mast, and the sprocket is provided with a sprocket channel for limiting the position of the chain assembly; A guide assembly, wherein the guide assembly is arranged at the upper end of the base, and a second limiting channel is arranged inside the guide assembly, and the second limiting channel can guide and further limit the oil cylinder oil pipe; A straightening assembly, one side of which is rotatably mounted on the guide assembly, and the other side of which is in contact with the side surface of the sprocket. The sprocket rotates when guiding the chain assembly to straighten the cylinder oil pipe that has left the first limiting channel.

[0007] By adopting the above scheme, the cylinder oil pipe is arranged in the first limiting channel on the chain assembly. Under the premise of not affecting the structural strength of the chain assembly itself, the second limiting channel can be used to further limit the cylinder oil pipe, thereby improving the limiting effect of the cylinder oil pipe and preventing it from being twisted. At the same time, the chain is arranged on the sprocket, so that the sprocket can be used to limit the chain assembly, thereby also improving the limiting effect of the cylinder oil pipe. In addition, the rotation of the sprocket itself can drive the shifting assembly to shift the cylinder oil pipe that has not entered the second limiting channel, further reducing the possibility of the cylinder oil pipe being twisted during movement.

[0008] In one embodiment of the present application, the number of the chain assemblies is set to two, and the two chain assemblies respectively bypass the two sprockets one by one. The chain assembly is also provided with a first limiting channel for limiting the cylinder oil pipe. The first limiting channel can enclose the cylinder oil pipe with the second limiting channel to guide and limit the cylinder oil pipe. The number of the alignment assemblies is set to two, and the two alignment assemblies are respectively arranged on the side of the two chain assemblies away from each other.

[0009] By adopting the above scheme, by setting up two chain assemblies, the structural strength of the chain assembly when pulling the forklift mast can be improved. At the same time, a first limiting channel is added to the first chain assembly so that it and the second limiting channel enclose the cylinder oil pipe, thereby further improving the limiting degree of the cylinder oil pipe.

[0010] In one embodiment of the present application, the chain assembly includes a plurality of chain units, which are sequentially arranged along the length direction of the chain units themselves and connected to each other to form the chain assembly, and each of the chain units includes: An outer chain plate assembly, the outer chain plate assembly comprising three outer chain plates, the three outer chain plates are parallel to each other and spaced apart, and form two first limit channels; Inner chain plate assemblies, the number of the inner chain plate assemblies is set to two groups, each group of the inner chain plate assemblies includes a plurality of inner chain plates, one end of each group of the inner chain plate assemblies is respectively arranged in two first limiting channels, and the other end extends to the first limiting channel of the adjacent chain unit, and the inner chain plate assemblies are rotatably connected to the outer chain plate assemblies through a pin shaft; and A pin shaft passes through the outer chain plate and the inner chain plate and is rotatably connected to the outer chain plate and the inner chain plate.

[0011] By adopting the above scheme, by setting two first limiting channels in each chain assembly, multiple cylinder oil pipes can be set in the first limiting channels one by one, and at the same time, multiple inner chain plates are set inside each chain unit, and the width of the first limiting channel is determined by the width of the combination of the multiple inner chain plates. While improving the structural strength of the chain unit, it can be adjusted according to the diameter of the cylinder oil pipe, so that the chain unit can accurately limit the cylinder oil pipe.

[0012] In one embodiment of the present application, the guide assembly includes two guide members, which are respectively arranged on both sides of the upper end of the base, and each group of guide members includes: A bracket with a gap inside, one side of the bracket is fixedly assembled on one side of the upper end of the base, and the lower end of the other side is provided with a limiting portion, and the limiting portion is provided on one side of the sprocket; A guide column is arranged inside the gap along the width direction of the bracket, two ends of the guide column are respectively connected and fixed to the inner walls of both sides of the bracket, and the guide column is provided with two second limiting channels spaced apart along its own axial direction.

[0013] By adopting the above scheme, by setting up a guide component and utilizing the second limiting channel set inside the guide component, it is possible to cooperate with the first limiting channel to limit the thickness direction of the cylinder oil pipe, thereby improving the stability of the cylinder oil pipe when moving on the chain assembly and preventing it from twisting and deflecting.

[0014] In one embodiment of the present application, the correction component includes: A rotating shaft, one end of which is rotatably mounted on the limiting portion, and the other end of which is coaxially mounted with a rotating column; A paddle, one end of which is coaxially sleeved on the rotating column, and the other end of which extends to the outside of the bracket. An inclined surface is provided on a side of the other end of the paddle close to the chain assembly.

[0015] In one embodiment of the present application, an annular rough surface is provided on the side of the sprocket close to the bracket, the annular rough surface is in conflict with the end surface of the rotating column away from the bracket, and the projection of the annular rough surface on the rotating column is located between the axis center and the generatrix of the rotating shaft.

[0016] By adopting the above scheme, the rotating shaft and the edge of the sprocket are in contact with each other. During the sprocket lifting process, when the sprocket rotates, the annular rough surface on the sprocket can drive the rotating column to rotate with the rotating shaft as the axis, thereby driving the paddle to rotate, and using the other end of the paddle to continuously pull and correct the cylinder oil pipe that has not yet entered the first limit channel and the second limit channel, so that it can enter the first limit channel and the second limit channel, making it convenient for the guide assembly and the chain assembly to further guide and correct the cylinder oil pipe.

[0017] In one embodiment of the present application, the sprocket comprises: A roller body, the roller body being rotatably mounted on one side of the base; Two limiting rings are coaxially arranged on both sides of the roller body, the diameter of the two limiting rings is larger than the diameter of the roller body, the annular rough surface is arranged on the side of the limiting ring close to the bracket, and the gap between the two limiting rings forms the sprocket channel.

[0018] In one embodiment of the present application, an arc surface is provided at the connection between the two limiting rings and the roller body, a first inclined surface coaxial with the limiting ring is provided on the opposite side between the two limiting rings, and a second inclined surface that can match the shape of the first inclined surface is respectively provided on the end surfaces at both ends of the pin shaft.

[0019] By adopting the above scheme, a sprocket channel is set on the sprocket, so that the sprocket can limit the chain assembly. At the same time, by setting a first inclined surface and also setting a second inclined surface at both ends of the pin shaft, it is avoided that the chain assembly moves inside the sprocket channel. Interference with the sprocket is avoided, so that the chain assembly moves more smoothly on the sprocket.

[0020] In one embodiment of the present application, both the first limiting channel and the second limiting channel are arc-shaped channels.

[0021] By adopting the above solution and setting the shapes of the first limiting channel and the second limiting channel, the two can be surrounded by each other and the oil cylinder oil pipe can be limited.

[0022] The present invention also relates to a forklift, and its technical solution is as follows: a forklift comprises a forklift door frame chain seat.

[0023] By adopting the above solution, by assembling the forklift mast chain seat on the forklift, when the forklift device drives the forklift mast to rise and fall, the cylinder oil pipe and the chain will not be twisted or skewed, thereby preventing the chain from falling out and causing the equipment to fail to work.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a first limiting channel on the chain assembly and setting the cylinder oil pipe on the first limiting channel, the cylinder oil pipe can move inside the first limiting channel, that is, on the chain assembly, and a guide assembly is simultaneously set, and the second limiting channel on the guide assembly is used to cooperate with the first limiting channel to further limit the cylinder oil pipe, thereby avoiding twisting and deflection of the cylinder oil pipe when the forklift mast is raised or lowered.

[0025] 2. By setting a sprocket channel on the sprocket, the pin shaft in the chain assembly is limited to avoid motion interference with the sprocket when the pin shaft in the chain assembly moves in the sprocket channel. At the same time, by setting a sprocket to limit the pin shaft, the chain assembly passing through the sprocket can be limited.

[0026] 3. By setting up the correction component, when the cylinder oil pipe is unable to guide and limit the cylinder oil pipe due to the excessive deflection angle before entering the first limit channel, the correction component farther away from the cylinder oil pipe is set on the bracket, so that the cylinder oil pipe with excessive deflection angle can be initially corrected and the cylinder oil pipe can be pushed back into the first limit channel, thereby improving the accuracy of the first limit channel and the second limit channel in guiding and limiting the cylinder oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of a forklift mast chain seat provided in an embodiment of the present application; Figure 2 It is a front view of a sprocket of a forklift gantry chain seat provided in an embodiment of the present application; Figure 3 It is a front view of a forklift mast chain seat chain unit provided in an embodiment of the present application; Figure 4 It is a plan view of a forklift mast chain seat alignment assembly provided in an embodiment of the present application; Figure 5 It is a plan view schematically showing a forklift gantry chain seat arc surface and a first inclined surface provided in an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. base; 11. sprocket; 111. sprocket channel; 1111. arc surface; 112. roller body; 113. limiting ring; 1131. first inclined surface; 114. annular rough surface; 2. chain assembly; 21. first limiting channel; 22. chain unit; 221. outer chain plate assembly; 2211. outer chain plate; 222. inner chain plate assembly; 2221. inner chain plate; 223. pin; 2231. second inclined surface; 3. guide assembly; 31. guide member; 311. bracket; 3110. gap; 3111. limiting part; 312. guide column; 32. second limiting channel; 4. adjustment assembly; 41. rotating shaft; 411. rotating column; 42. paddle; 421. inclined surface; 5. cylinder oil pipe. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 A forklift mast chain seat and a forklift provided in the present application are further described in detail.

[0030] See also Figure 1, is a forklift door frame chain seat provided in an embodiment of the present application, used for driving the forklift door frame to rise and fall on the forklift, including: a base 1, a chain assembly 2, a guide assembly 3 and a correction assembly 4, the base 1 is rotatably connected with sprockets 11 on both sides, the lower end of the base 1 is connected and fixed to the driving shaft of the cylinder, the chain assembly 2, one end of the chain assembly 2 is connected and fixed to the forklift, and the other end bypasses the sprocket 11 and is connected and fixed to the forklift door frame, the sprocket 11 is provided with a sprocket channel 111 for limiting the chain assembly 2, the guide assembly 3 is arranged at the upper end of the base 1, and a second limiting channel 32 is provided inside the guide assembly 3, the second limiting channel 32 can guide and further limit the cylinder oil pipe 5, and one side of the correction assembly 4 can be rotatable It is assembled on the guide assembly 3, and the other side is in conflict with the side of the sprocket 11. The sprocket 11 rotates when guiding the chain assembly 2 to adjust the cylinder oil pipe that is out of the first limiting channel 21. By setting the cylinder oil pipe 5 in the first limiting channel 21 in the chain assembly 2, the cylinder oil pipe 5 can be moved along its length direction in the chain assembly 2, and the second limiting channel 32 can further limit the top of the cylinder oil pipe 5. In addition, the adjustment assembly 4 is used to cooperate with the rotation of the sprocket 11, so that it rotates itself, so that the cylinder oil pipe 5 with an excessively large deflection angle can be adjusted and smoothly enter the first limiting channel 21, so that the first limiting channel 21 and the second limiting channel 32 can conveniently limit the cylinder oil pipe 5.

[0031] The number of the chain assemblies 2 is set to two, and the two chain assemblies 2 respectively bypass the two sprockets 11 in a one-to-one correspondence. The chain assembly is also provided with a first limiting channel 21 for limiting the cylinder oil pipe. The first limiting channel 21 can enclose the cylinder oil pipe with the second limiting channel 32 to guide and limit the cylinder oil pipe. The number of the correction components 4 is set to two, and the two correction components 4 are respectively arranged on the side away from each other of the two chain assemblies 2. By providing two chain assemblies 2, the structural strength of the chain assembly 2 is improved, and multiple cylinder oil pipes 5 can be placed on the chain assembly 2, optimizing the spatial layout of the entire chain seat, so that the chain assembly 2 and the cylinder oil pipe 5 will not be twisted or skewed. At the same time, the first limiting channel 21 and the second limiting channel 32 on the chain assembly cooperate with each other, so that the first limiting channel 21 and the second limiting channel 32 can further limit and guide the cylinder oil pipe.

[0032] The chain assembly 2 includes a plurality of chain units 22, which are sequentially arranged along the length direction of the chain unit 22 and connected to each other to form the chain assembly 2. Each of the chain units 22 includes an outer chain plate assembly 221, an inner chain plate assembly 222 and a pin shaft 223. The outer chain plate assembly 221 includes three outer chain plates 2211, which are parallel to each other and spaced apart to form two first limiting channels 21. The number of the inner chain plate assemblies 222 is set to two groups, and each group of the inner chain plate assemblies 222 includes a plurality of inner chain plates 2221. One end of each group of the inner chain plate assemblies 222 is respectively arranged in the two first limiting channels 21, and the other end extends to the adjacent chain unit 21. In the first limiting channel 21 of element 22, the inner chain plate assembly 222 is rotatably connected to the outer chain plate assembly 221 through a pin shaft 223, and the pin shaft 223 passes through the outer chain plate 2211 and the inner chain plate 2221, and is rotatably connected to the outer chain plate 2211 and the inner chain plate 2221, wherein the number of inner chain plates 2221 is set according to the diameter of the cylinder oil pipe 5, so that the thickness of multiple inner chain plates 2221 stacked together is not less than the diameter of the cylinder oil pipe 5, wherein the number of outer chain plates 2211 in the chain unit 22 can be set to n, and correspondingly, the number of inner chain plate assemblies 222 can be set to (n-1), and chain assemblies 2 of different widths are set according to the requirements of actual working conditions to limit multiple cylinder oil pipes 5 at the same time.

[0033] The guide assembly 3 includes two guide members 31, which are respectively arranged on both sides of the upper end of the base 1. Each group of guide members 31 includes: a bracket 311 and a guide column 312. A gap 3110 is provided inside the bracket 311. One side of the bracket 311 is fixedly assembled on one side of the upper end of the base 1, and a limiting portion 3111 is provided at the lower end of the other side. The limiting portion 3111 is provided on one side of the sprocket 11. The guide column 312 is provided inside the gap 3110 along the width direction of the bracket 311. Both ends of the guide column 312 are respectively connected and fixed to the inner walls of both sides of the bracket 311. The guide column 312 is provided with two second limiting channels 32 at intervals along its own axial direction. By arranging the guide member 31 on the base 1 and limiting the upper part of the cylinder oil pipe 5 by using the second limiting channel 32 in the guide member 31, the cylinder oil pipe 5 is further prevented from falling off the chain assembly 2.

[0034] The correction component 4 includes: a rotating shaft 41 and a paddle 42, one end of the rotating shaft 41 is rotatably assembled on the limiting portion 3111, and the other end is coaxially assembled with a rotating column 411, one end of the paddle 42 is coaxially sleeved on the rotating column 411, and the other end extends to the outside of the bracket 311, and the other end of the paddle 42 is provided with an inclined surface 421 on the side close to the chain assembly 2. By providing a paddle 42 on one side of the sprocket 11 that can rotate continuously following the rotation of the sprocket 11, the paddle 42 is used to preliminarily correct the cylinder oil pipe 5 with an excessively large deflection angle, so that the cylinder oil pipe 5 can smoothly enter the first limiting channel 21.

[0035] An annular rough surface 114 is provided on the side of the sprocket 11 close to the bracket 311, and the annular rough surface 114 conflicts with the end surface of the rotating column 411 away from the bracket 311. The projection of the annular rough surface 114 on the rotating column 411 is located between the axis and the generatrix of the rotating shaft 41. By providing the annular rough surface 114, when the sprocket 11 conflicts with the end surface of the rotating column 411, there is sufficient friction between the two to drive the rotating column 411 to rotate.

[0036] In this embodiment, the annular rough surface 114 may be an annular surface with stripes or grid-like patterns.

[0037] The sprocket 11 includes: a roller body 112 and a limiting ring 113, the number of the limiting rings 113 is two, the roller body 112 is rotatably assembled on one side of the base 1, the two limiting rings 113 are coaxially arranged on both sides of the roller body 112, the diameter of the two limiting rings 113 is larger than the diameter of the roller body 112, the annular rough surface 114 is arranged on the side of the limiting ring 113 close to the bracket 311, and the gap between the two limiting rings 113 forms the sprocket 11 channel.

[0038] An arc surface 1111 is provided at the connection between the two limit rings 113 and the roller body 112, and a first inclined surface 1131 coaxial with the limit ring 113 is provided on the opposite side between the two limit rings 113, and the end surfaces of both ends of the pin shaft 223 are respectively provided with second inclined surfaces 2231 that can match the shape of the first inclined surface 1131. By setting the arc surface 1111, the sprocket 11 can guide the skewed chain assembly 2, and by setting the first inclined surface 1131 and the second inclined surface 2231, when the sprocket 11 guides the chain assembly 2, the pin shaft 223 will not interfere with the movement of the limit ring 113.

[0039] The first limiting channel 21 and the second limiting channel 32 are both arc-shaped channels.

[0040] The present invention also relates to a forklift, and its technical solution is as follows: a forklift, comprising a forklift mast chain seat, by arranging the forklift mast chain seat on the forklift, so that when the forklift mast is raised or lowered, the chain assembly 2 and the cylinder oil pipe 5 can be limited and guided at the same time, thereby avoiding twisting and deflection of the chain and the cylinder oil pipe 5.

[0041] In summary, when the device is driven to pull the forklift mast up and down, the chain assembly 2 is firstly wound around the sprocket 11, and the cylinder oil pipe 5 is wound around the chain assembly 2, and the cylinder oil pipe 5 is limited by the first limiting channel 21 of the chain assembly 2 and the second limiting channel 32 on the guide assembly 3. When the chain assembly 2 is deflected, the arc surface 1111 contacts the side of the chain assembly 2, so that the chain assembly 2 can be squeezed back to the normal position. At the same time, the first inclined surface 1131 and the second inclined surface 2231 contact each other, so that the pin shaft 223 can be limited, and then the chain assembly 2 is limited so that it will not fall out of the sprocket 11. At the same time, in the process of the oil cylinder driving the base 1 to rise and fall, the annular rough surface 114 of the sprocket 11 can interfere with part of the end surface of the rotating column 411. When the sprocket 11 rotates, the rotating column 411 is driven to rotate due to the influence of friction, and then the paddle 42 can be driven to rotate inside the bracket 311. Compared with the cylinder oil pipe 5 with a larger deflection angle, the paddle 42 can first contact the cylinder oil pipe 5 when rotating, and drive the cylinder oil pipe 5 with a large angle of deflection to return to the straight position, ensuring that the first limit channel 21 and the second limit channel 32 can accurately guide the cylinder oil pipe 5.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A forklift mast chain seat, used to drive the forklift mast to rise and fall on the forklift, characterized in that: include: A base (1) connected to the oil cylinder, sprockets (11) are rotatably connected to both sides of the base (1), and the lower end of the base (1) is fixedly connected to the drive shaft of the oil cylinder; A chain assembly (2), one end of the chain assembly (2) is connected and fixed to a forklift, and the other end passes around the sprocket wheel (11) and is connected and fixed to a forklift mast, and the sprocket wheel (11) is provided with a sprocket wheel channel (111) capable of limiting the position of the chain assembly (2); A guide assembly (3), the guide assembly (3) being arranged at the upper end of the base (1), the guide assembly (3) being provided with a second limiting channel (32) inside, the second limiting channel (32) being capable of guiding and further limiting the oil cylinder oil pipe; A correction component (4), one side of which is rotatably mounted on the guide component (3), and the other side of which is in contact with the side surface of the sprocket wheel (11). The sprocket wheel (11) rotates when guiding the chain component (2) to correct the oil cylinder pipe that has left the first limiting channel (21).

2. A forklift mast chain seat according to claim 1, characterized in that: The number of the chain assemblies (2) is set to two, and the two chain assemblies (2) are respectively and one by one passed around the two sprocket wheels (11). The chain assembly is also provided with a first limiting channel (21) capable of limiting the position of the oil cylinder pipe. The first limiting channel (21) and the second limiting channel (32) can enclose the oil cylinder pipe to guide and limit the oil cylinder pipe. The number of the alignment assemblies (4) is set to two, and the two alignment assemblies (4) are respectively arranged on the side of the two chain assemblies (2) away from each other.

3. A forklift mast chain seat according to claim 2, characterized in that: The chain assembly (2) comprises a plurality of chain units (22), wherein the plurality of chain units (22) are sequentially arranged along the length direction of the chain units (22) themselves and are interconnected to form the chain assembly (2), and each of the chain units (22) comprises: An outer chain piece assembly (221), the outer chain piece assembly (221) comprising three outer chain pieces (2211), the three outer chain pieces (2211) being arranged parallel to each other and spaced apart, and forming two first limiting channels (21); Inner chain plate assemblies (222), the number of the inner chain plate assemblies (222) is set to two groups, each group of the inner chain plate assemblies (222) comprises a plurality of inner chain plates (2221), one end of each group of the inner chain plate assemblies (222) is respectively arranged in two first limiting channels (21), and the other end extends to the first limiting channel (21) of the adjacent chain unit (22), and the inner chain plate assemblies (222) are rotatably connected to the outer chain plate assemblies (221) via a pin shaft (223); and A pin shaft (223) passes through the outer chain piece (2211) and the inner chain piece (2221), and is rotationally connected to both the outer chain piece (2211) and the inner chain piece (2221).

4. A forklift mast chain seat according to claim 3, characterized in that: The guide assembly (3) comprises two guide members (31), the two guide members (31) are respectively arranged on both sides of the upper end of the base (1), and each group of guide members (31) comprises: A bracket (311) having a gap (3110) therein, wherein one side of the bracket (311) is fixedly mounted on one side of the upper end of the base (1), and the lower end of the other side is provided with a limiting portion (3111), and the limiting portion (3111) is provided on one side of the sprocket (11); A guide column (312), wherein the guide column (312) is arranged inside the gap (3110) along the width direction of the bracket (311), and the two ends of the guide column (312) are respectively connected and fixed to the inner walls on both sides of the bracket (311), and the guide column (312) is provided with two second limiting channels (32) spaced apart along its own axial direction.

5. A forklift mast chain seat according to claim 4, characterized in that: The correction component (4) comprises: A rotating shaft (41), one end of the rotating shaft (41) is rotatably mounted on the limiting portion (3111), and the other end is coaxially mounted with a rotating column (411); A paddle (42), one end of which is coaxially sleeved on the rotating column (411), and the other end of which extends to the outside of the bracket (311); an inclined surface (421) is provided on a side of the other end of the paddle (42) close to the chain assembly (2).

6. A forklift mast chain seat according to claim 5, characterized in that: An annular rough surface (114) is provided on one side of the sprocket (11) close to the bracket (311), the annular rough surface (114) and an end surface of the rotating column (411) away from the bracket (311) are in conflict with each other, and the projection of the annular rough surface (114) on the rotating column (411) is located between the axis of the rotating shaft (41) and the generatrix.

7. A forklift mast chain seat according to claim 6, characterized in that: The sprocket (11) comprises: A roller body (112), the roller body (112) being rotatably mounted on one side of the base (1); Two limiting rings (113), the two limiting rings (113) are coaxially arranged on both sides of the roller body (112), the diameter of the two limiting rings (113) is larger than the diameter of the roller body (112), the annular rough surface (114) is arranged on a side of the limiting ring (113) close to the bracket (311), and the gap between the two limiting rings (113) forms the sprocket channel (111).

8. The forklift mast chain seat according to claim 7, characterized in that: An arc surface (1111) is provided at the connection between the two limiting rings (113) and the roller body (112); a first inclined surface (1131) coaxial with the limiting ring (113) is provided on one side opposite to the two limiting rings (113); and second inclined surfaces (2231) that can match the shape of the first inclined surface (1131) are respectively provided on the end surfaces at both ends of the pin shaft (223).

9. The forklift mast chain seat according to claim 1, characterized in that: The first limiting channel (21) and the second limiting channel (32) are both arc-shaped channels.

10. A forklift, characterized in that: It comprises a forklift mast chain seat as described in any one of claims 1 to 9.

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