Sealing forklift used in clean room

Abstract

An upper roller shutter box body of a dynamic sealing mechanism of the sealing forklift is connected with the top of a fork arm lifting base frame through an upper roller shutter mounting plate, an upper roller shutter body is led out of the upper roller shutter box body, and the end of the led-out upper roller shutter body is connected with a fork arm upper cross beam through an upper roller shutter pressing plate; the lower roller shutter box body is connected with the bottom of the fork arm lifting base frame through a lower roller shutter mounting plate, the lower roller shutter body is led out from the lower roller shutter box body, and the end part of the led-out lower roller shutter body is connected with the fork arm lower cross beam through a lower roller shutter pressing plate; the dynamic sealing mechanism further comprises a carrier roller dustproof belt assembly, a dustproof belt body of the carrier roller dustproof belt assembly bypasses a rear carrier roller body from a front carrier roller body, the front carrier roller body and the rear carrier roller body are both connected with a carrier roller installation block, and the carrier roller installation block is connected with a fork arm body through an adapter block. The fork arm body vertically drives the dustproof belt body to slide between the front carrier roller body and the rear carrier roller body. According to the invention, particulate matters are prevented from entering electronic components and sensitive materials, and the final product performance and safety are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of forklifts, and in particular relates to a sealed forklift used in a clean room. Background Art

[0002] ‌‌‌Forklifts play a vital role in the logistics and warehousing industries. They are mainly used for loading and unloading, stacking and short-distance transportation of palletized goods.

[0003] At present, most of the material transportation by traditional forklifts is carried out outdoors. During operation, the moving parts of the forklifts are prone to generate dust and particles due to friction. Faced with the high cleanliness standards required by the electronic components, semiconductors and medical device industries, these particles may enter the electronic components and sensitive materials, thereby contaminating the sensitive materials and affecting the final product performance and safety. In addition, due to the lack of sealing, the moving parts of the forklift (such as the drive system) will be in direct contact with the external environment during operation, which will significantly accelerate the aging and wear of the equipment, reduce its service life, and increase the maintenance frequency. Summary of the invention

[0004] To this end, the present invention provides a sealed forklift for use in a clean room, which solves the problem in traditional technologies that particulate matter enters electronic components and sensitive materials due to the lack of a sealing design, affecting product performance and safety, and affecting the service life of the forklift.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a sealed forklift for use in a clean room, comprising a fork arm body, a fork arm lifting base frame and a fork arm driving mechanism, wherein the fork arm body is arranged on one side of the fork arm lifting base frame, the fork arm driving mechanism is arranged on the other side of the fork arm lifting base frame, the fork arm driving mechanism is connected to the fork arm body, the fork arm body comprises a fork arm upper cross beam and a fork arm lower cross beam; the fork arm driving mechanism drives the fork arm body to move up and down along the fork arm lifting base frame, and also comprises a dynamic sealing mechanism; The dynamic sealing mechanism comprises an upper rolling curtain box, an upper rolling curtain body, a lower rolling curtain box and a lower rolling curtain body; the upper rolling curtain box is connected to the top of the fork arm lifting base frame through an upper rolling curtain mounting plate, the upper rolling curtain body is led out from the upper rolling curtain box, and the end of the upper rolling curtain body after being led out is connected to the fork arm upper cross beam through an upper rolling curtain pressing plate; the lower rolling curtain box is connected to the bottom of the fork arm lifting base frame through a lower rolling curtain mounting plate, the lower rolling curtain body is led out from the lower rolling curtain box, and the end of the lower rolling curtain body after being led out is connected to the fork arm lower cross beam through a lower rolling curtain pressing plate; The dynamic sealing mechanism also includes a roller dustproof belt assembly, which includes a dustproof belt body, a front roller body, a rear roller body, a transfer block and a roller mounting block. The dustproof belt body is passed by the front roller body around the rear roller body. The front roller body and the rear roller body are both connected to the roller mounting block, and the roller mounting block is connected to the fork arm body through the transfer block. The fork arm body drives the dustproof belt body to slide between the front roller body and the rear roller body up and down; The upper rolling curtain body and the lower rolling curtain body are extended and retracted following the up and down movement of the fork arm body.

[0006] As a preferred solution for a sealed forklift used in a clean room, a top pressure block is provided on the outer side of the upper part of the dustproof belt body, and a tension block is connected to the outer side of the top pressure block; a clamping bolt is connected between the tension block and the top pressure block; An adjusting pressure block is provided on the top of the fork arm lifting base frame, and an adjusting bolt is connected between the adjusting pressure block and the top of the tensioning block; The tension block is formed with upper and lower adjustment holes, and the upper and lower adjustment holes are connected with tension fixing bolts.

[0007] As a preferred solution for a sealed forklift used in a clean room, a dustproof belt mounting plate is provided at the upper bottom end of the fork arm lifting base frame, a dustproof belt fixing block is provided above the dustproof belt mounting plate, and a dustproof belt pressing block is connected to the upper end of the dustproof belt fixing block.

[0008] As a preferred solution for a sealed forklift used in a clean room, the roller dust-proof belt assembly is provided with two groups, and the two groups of the roller dust-proof belt assemblies are symmetrically distributed on the inner side of the fork arm lifting base frame; Each group of the roller dustproof belt assembly is provided with two front roller bodies at the top and bottom, and each group of the roller dustproof belt assembly is provided with two rear roller bodies at the top and bottom; each group of the roller dustproof belt assembly is provided with two roller mounting blocks at the top and bottom; and the adapter block is connected between the two roller mounting blocks at the top and bottom. The dustproof belt body is formed with a bend at the positions of the upper and lower front roller bodies and the upper and lower rear roller bodies.

[0009] As a preferred solution for a sealed forklift used in a clean room, a limit mounting block is provided on the side of the fork arm lifting base, and the lower end of the limit mounting block is fixedly connected to the limit block body; the bottom of the limit block body is lower than the bottom of the upper roller shutter box.

[0010] The preferred solution of the sealed forklift for use in a clean room further comprises a static sealing mechanism, wherein the static sealing mechanism comprises a top cover plate, and the top cover plate is connected to the top of the fork arm lifting base frame.

[0011] As a preferred solution for a sealed forklift used in a clean room, the static sealing mechanism further comprises an upper sealing plate and a lower sealing plate, wherein the upper sealing plate is connected to the upper outer side of the fork arm lifting base, and the lower sealing plate is connected to the lower outer side of the fork arm lifting base.

[0012] As a preferred solution for a sealed forklift used in a clean room, the static sealing mechanism further comprises a middle sealing plate, and the middle sealing plate is connected between the fork arm upper crossbeam and the fork arm lower crossbeam.

[0013] As a preferred solution for the sealed forklift used in a clean room, the static sealing mechanism further comprises a rear end sealing plate, and the rear end sealing plate is connected to the rear lower side of the fork arm lifting base.

[0014] As a preferred solution for the sealed forklift used in a clean room, the static sealing mechanism further comprises a visible sealing plate, and the visible sealing plate is connected to the upper rear side of the fork arm lifting base.

[0015] The present invention has the following advantages: the dynamic sealing mechanism comprises an upper rolling curtain box, an upper rolling curtain body, a lower rolling curtain box and a lower rolling curtain body; the upper rolling curtain box is connected to the top of the fork arm lifting base frame through an upper rolling curtain mounting plate, the upper rolling curtain body is led out from the upper rolling curtain box, and the end of the upper rolling curtain body after being led out is connected to the fork arm upper cross beam through an upper rolling curtain pressing plate; the lower rolling curtain box is connected to the bottom of the fork arm lifting base frame through a lower rolling curtain mounting plate, the lower rolling curtain body is led out from the lower rolling curtain box, and the end of the lower rolling curtain body after being led out is connected to the fork arm through a lower rolling curtain pressing plate The lower cross beam; the dynamic sealing mechanism also includes a roller dust belt assembly, which includes a dust belt body, a front roller body, a rear roller body, a transfer block and a roller mounting block. The dust belt body is passed around the rear roller body by the front roller body, and the front roller body and the rear roller body are both connected to the roller mounting block, and the roller mounting block is connected to the fork arm body through the transfer block; the fork arm body drives the dust belt body up and down to slide between the front roller body and the rear roller body; the upper roller curtain body and the lower roller curtain body follow the up and down movement of the fork arm body to extend and retract. The present invention can separate the interior of the forklift from the surrounding environment to avoid mutual contamination; maintain good sealing performance in different motion states; prevent particulate matter from entering electronic components and sensitive materials, improve the final product performance and safety; reduce the aging and wear of the forklift, increase the service life of the forklift, and reduce the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 A schematic diagram of a three-dimensional structure from a first-person perspective of a sealed forklift for use in a clean room provided in an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a sealed forklift for use in a clean room provided in an embodiment of the present invention from a second viewing angle; Figure 3 A schematic diagram of a three-dimensional structure from a third perspective of a sealed forklift for use in a clean room provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of a sealed forklift used in a clean room provided in an embodiment of the present invention.

[0018] In the figure, 1, fork arm body; 2, fork arm lifting base frame; 3, fork arm driving mechanism; 4, fork arm upper crossbeam; 5, fork arm lower crossbeam; 6, upper rolling curtain box; 7, upper rolling curtain body; 8, lower rolling curtain box; 9, lower rolling curtain body; 10, dust belt body; 11, front roller body; 12, rear roller body; 13, adapter block; 14, roller mounting block; 15, top pressure block; 16, tensioning block; 17, clamping bolt; 18, adjustment pressure block; 19, adjustment bolt ; 20. Upper and lower adjustment holes; 21. Tensioning fixing bolts; 22. Dustproof belt mounting plate; 23. Dustproof belt fixing block; 24. Dustproof belt pressing block; 25. Limit mounting block; 26. Limit block body; 27. Top cover plate; 28. Upper sealing plate; 29. ​​Lower sealing plate; 30. Middle sealing plate; 31. Rear sealing plate; 32. Visible sealing plate; 33. Upper roller curtain mounting plate; 34. Upper roller curtain pressure plate; 35. Lower roller curtain mounting plate; 36. Lower roller curtain pressure plate. DETAILED DESCRIPTION

[0019] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The embodiment of the present invention provides a sealed forklift for use in a clean room, comprising a fork arm body 1, a fork arm lifting base frame 2 and a fork arm driving mechanism 3, wherein the fork arm body 1 is arranged on one side of the fork arm lifting base frame 2, and the fork arm driving mechanism 3 is arranged on the other side of the fork arm lifting base frame 2, the fork arm driving mechanism 3 is connected to the fork arm body 1, and the fork arm body 1 comprises a fork arm upper cross beam 4 and a fork arm lower cross beam 5; the fork arm driving mechanism 3 drives the fork arm body 1 to move up and down along the fork arm lifting base frame 2, and also comprises a dynamic sealing mechanism; The dynamic sealing mechanism includes an upper rolling curtain box 6, an upper rolling curtain body 7, a lower rolling curtain box 8 and a lower rolling curtain body 9; the upper rolling curtain box 6 is connected to the top of the fork arm lifting base frame 2 through an upper rolling curtain mounting plate 33, the upper rolling curtain body 7 is led out from the upper rolling curtain box 6, and the end of the upper rolling curtain body 7 after being led out is connected to the fork arm upper cross beam 4 through an upper rolling curtain pressing plate 34; the lower rolling curtain box 8 is connected to the bottom of the fork arm lifting base frame 2 through a lower rolling curtain mounting plate 35, the lower rolling curtain body 9 is led out from the lower rolling curtain box 8, and the end of the lower rolling curtain body 9 after being led out is connected to the fork arm lower cross beam 5 through a lower rolling curtain pressing plate 36; The dynamic sealing mechanism further includes a roller dustproof belt assembly, which includes a dustproof belt body 10, a front roller body 11, a rear roller body 12, an adapter block 13 and a roller mounting block 14. The dustproof belt body 10 is passed around the rear roller body 12 by the front roller body 11. The front roller body 11 and the rear roller body 12 are both connected to the roller mounting block 14. The roller mounting block 14 is connected to the fork arm body 1 through the adapter block 13. The fork arm body 1 drives the dust belt body 10 to slide between the front roller body 11 and the rear roller body 12 up and down; the upper roller curtain body 7 and the lower roller curtain body 9 extend and retract following the up and down movement of the fork arm body 1.

[0021] In this embodiment, a top pressure block 15 is provided on the outer side of the upper part of the dustproof belt body 10, and a tensioning block 16 is connected to the outer side of the top pressure block 15; a clamping bolt 17 is connected between the tensioning block 16 and the top pressure block 15; an adjustment pressure block 18 is provided on the top of the fork arm lifting base 2, and an adjustment bolt 19 is connected between the adjustment pressure block 18 and the top of the tensioning block 16; the tensioning block 16 is formed with upper and lower adjustment holes 20, and the upper and lower adjustment holes 20 are connected with a tensioning fixing bolt 21; a dustproof belt mounting plate 22 is provided on the upper end of the bottom of the fork arm lifting base 2, and a dustproof belt fixing block 23 is provided above the dustproof belt mounting plate 22, and a dustproof belt clamping block 24 is connected to the upper end of the dustproof belt fixing block 23.

[0022] See again Figure 3 and Figure 4Specifically, the dust-proof belt body 10 is pressed against the side of the fork arm lifting base 2 by the pressing block 15, and then the pressing block 15 is pressed and fixed on the outside of the pressing block 15 by the tensioning block 16 and the matching clamping bolts 17, and the tensioning block 16 itself has upper and lower adjustment holes 20, and the upper and lower positions of the tensioning block 16 can be fine-tuned by the tensioning and fixing bolts 21. The top of the tensioning block 16 is connected to the adjusting pressing block 18 by the adjusting bolt 19, and the adjusting pressing block 18 further plays a role in stabilizing the tensioning block 16, thereby fixing the upper part of the dust-proof belt body 10. The lower part of the dust-proof belt body 10 is fixed by the dust-proof belt fixing block 23, and the dust-proof belt fixing block 23 itself is pressed on the dust-proof belt mounting plate 22 by the dust-proof belt clamping block 24, ensuring that the upper and lower ends of the dust-proof belt body 10 are fixed.

[0023] Among them, since the dustproof belt body 10 is bypassed by the front roller body 11 around the rear roller body 12, the front roller body 11 and the rear roller body 12 are connected to the roller mounting block 14, and the roller mounting block 14 is connected to the fork arm body 1 through the adapter block 13. When the rear roller body 12 and the front roller body 11 move up and down, the state of the sealing position of the dustproof belt body 10 can be changed. When the fork arm body 1 rises, the upper sealing position of the dustproof belt body 10 decreases as the rear roller body 12 and the front roller body 11 move upward, and the lower sealing position of the dustproof belt body 10 increases as the rear roller body 12 and the front roller body 11 move upward; conversely, when the fork arm body 1 descends, the upper sealing position of the dustproof belt body 10 increases as the rear roller body 12 and the front roller body 11 move downward, and the lower sealing position of the dustproof belt body 10 decreases as the rear roller body 12 and the front roller body 11 move downward, so as to adapt to the lifting and lowering of the fork arm body 1.

[0024] In the present embodiment, two groups of roller dust-proof belt assemblies are provided, and the two groups of roller dust-proof belt assemblies are symmetrically distributed on the inner side of the fork arm lifting base 2; each group of roller dust-proof belt assemblies is provided with two front roller bodies 11 above and below, and each group of roller dust-proof belt assemblies is provided with two rear roller bodies 12 above and below; each group of roller dust-proof belt assemblies is provided with two roller mounting blocks 14 above and below; the adapter block 13 is connected between the upper and lower roller mounting blocks 14; the dust-proof belt body 10 is formed with a bend at the positions of the upper and lower front roller bodies 11 and the upper and lower rear roller bodies 12.

[0025] Specifically, the two groups of roller dust belt assemblies form an all-round seal on both sides of the fork arm body 1. At the same time, each group of roller dust belt assemblies is provided with two front roller bodies 11 and two rear roller bodies 12, so that the dust belt body 10 can form a bypass state between the upper and lower two front roller bodies 11 and the upper and lower two rear roller bodies 12 without affecting the fixation of the adapter block 13 and the fork arm body 1, ensuring that the fork arm body 1 drives the dust belt body 10 to slide between the front roller body 11 and the rear roller body 12.

[0026] In this embodiment, a limit mounting block 25 is provided on the side of the fork arm lifting base frame 2, and the lower end of the limit mounting block 25 is fixedly connected to the limit block body 26; the bottom of the limit block body 26 is lower than the bottom of the upper roller shutter box 6. The limit mounting block 25 is used for the installation of the limit block body 26 to ensure that the limit block body 26 is in the correct position; the upper limit position of the forklift is limited by the limit block body 26 to prevent the fork arm body 1 from interfering with the sealing structure.

[0027] In a possible embodiment, a static sealing mechanism is further included, and the static sealing mechanism includes a top cover plate 27, and the top cover plate 27 is connected to the top of the fork arm lifting base frame 2. The top cover plate 27 seals the top of the fork arm lifting base frame 2, and the top cover plate 27 also provides the fork arm lifting base frame 2 with an installation and fixing position for the upper roller shutter box 6.

[0028] In a possible embodiment, the static sealing mechanism further includes an upper sealing plate 28 and a lower sealing plate 29, wherein the upper sealing plate 28 is connected to the upper outer side of the fork arm lifting base 2, and the lower sealing plate 29 is connected to the lower outer side of the fork arm lifting base 2. The upper sealing plate 28 is used to seal the upper front end of the fork arm lifting base 2, and the lower sealing plate 29 is used to seal the lower front end of the fork arm lifting base 2.

[0029] In a possible embodiment, the static sealing mechanism further includes a middle end sealing plate 30, which is connected between the fork arm upper cross beam 4 and the fork arm lower cross beam 5. The middle end sealing plate 30 is used to seal the gap between the fork arm upper cross beam 4 and the fork arm lower cross beam 5.

[0030] In a possible embodiment, the static sealing mechanism further includes a rear sealing plate 31, which is connected to the rear lower side of the fork arm lifting base 2. The rear sealing plate 31 is used to seal the rear middle lower position of the fork arm lifting base 2.

[0031] In a possible embodiment, the static sealing mechanism further includes a visible sealing plate 32, which is connected to the upper rear side of the fork arm lifting base 2. The visible sealing plate 32 is used to seal the upper rear side of the fork arm lifting base 2. At the same time, the visible sealing plate 32 can also observe the operating conditions inside the fork arm lifting base 2.

[0032] The dynamic sealing implementation process of the present invention is as follows: The process is explained by taking the complete forking and placing of materials by the forklift of this design as an example. In the initial state, the fork arm body 1 of the forklift is in the lower limit position, the upper roller shutter body 7 of the upper roller shutter box 6 is in a stretched state, and the lower roller shutter body 9 of the lower roller shutter box 8 is in a contracted state to maintain a sealed state; the two sets of dustproof belt bodies 10 are installed in a C-shape around the front roller body 11 and the rear roller body 12 at both ends, and the dustproof belt body 10 is always in a taut and sealed state.

[0033] The forklift is manually driven to the designated position, the fork arm body 1 is raised, and the material pallet is carried. During the process of raising the fork arm body 1, the upper roller shutter body 7 of the upper roller shutter box 6 begins to shrink from a stretched state, and the lower roller shutter body 9 of the lower roller shutter box 8 begins to extend from a contracted state, and the amount of contraction and extension will be consistent with the amount of rise of the fork arm body 1. This dynamic adjustment ensures that the sealing performance can be effectively maintained in each operation link of the forklift; the front roller body 11 and the rear roller body 12 are installed, and the adapter block 13 and the roller mounting block 14 follow the movement of the fork arm body 1 to adjust the sealing position of the dustproof belt body 10. The upper end sealing position of the dustproof belt body 10 decreases as the front roller body 11 and the rear roller body 12 move, and the lower end sealing position increases as the front roller body 11 and the rear roller body 12 move to adapt to the lifting and lowering of the fork arm body 1.

[0034] When the forklift places the material pallet, drive the forklift to the specified position, and lower the fork arm body 1 to ensure that the fork arm is completely separated from the material pallet. During the lowering of the fork arm, the upper roller shutter body 7 of the upper roller shutter box 6 begins to extend from a contracted state, and the lower roller shutter body 9 of the lower roller shutter box 8 begins to contract from a stretched state. The contraction and extension amount will be consistent with the lowering amount of the fork arm body 1; the front roller body 11 and the rear roller body 12 are installed, and the adapter block 13 and the roller mounting block 14 follow the movement of the fork arm body 1, and the upper end sealing position of the dust belt body 10 increases as the front roller body 11 and the rear roller body 12 move, and the lower end sealing position decreases as the front roller body 11 and the rear roller body 12 move to adapt to the lifting and lowering of the fork arm body 1.

[0035] In summary, the present invention presses the dust-proof belt body 10 against the side of the fork arm lifting base 2 through the pressing block 15, and then presses and fixes the pressing block 15 on the outside of the pressing block 15 through the tensioning block 16 and the matching clamping bolts 17, and the tensioning block 16 itself has upper and lower adjustment holes 20, and the upper and lower positions of the tensioning block 16 can be fine-tuned through the tensioning and fixing bolts 21. The top of the tensioning block 16 is connected to the adjusting pressing block 18 through the adjusting bolt 19, and the adjusting pressing block 18 further plays a role in stabilizing the tensioning block 16, thereby fixing the upper part of the dust-proof belt body 10. The lower part of the dust-proof belt body 10 is fixed by the dust-proof belt fixing block 23, and the dust-proof belt fixing block 23 itself is pressed on the dust-proof belt mounting plate 22 through the dust-proof belt clamping block 24, ensuring that the upper and lower ends of the dust-proof belt body 10 are fixed. Since the dustproof belt body 10 is bypassed by the front roller body 11 around the rear roller body 12, the front roller body 11 and the rear roller body 12 are connected to the roller mounting block 14, and the roller mounting block 14 is connected to the fork arm body 1 through the adapter block 13. When the rear roller body 12 and the front roller body 11 move up and down, the state of the sealing position of the dustproof belt body 10 can be changed. When the fork arm body 1 rises, the upper sealing position of the dustproof belt body 10 decreases as the rear roller body 12 and the front roller body 11 move upward, and the lower sealing position of the dustproof belt body 10 increases as the rear roller body 12 and the front roller body 11 move upward; conversely, when the fork arm body 1 descends, the upper sealing position of the dustproof belt body 10 increases as the rear roller body 12 and the front roller body 11 move downward, and the lower sealing position of the dustproof belt body 10 decreases as the rear roller body 12 and the front roller body 11 move downward, so as to adapt to the lifting and lowering of the fork arm body 1. The two groups of roller dust-proof belt assemblies form an all-round seal on both sides of the fork arm body 1. At the same time, each group of roller dust-proof belt assemblies is provided with two front roller bodies 11 and two rear roller bodies 12, so that the dust-proof belt body 10 can form a detour state between the upper and lower two front roller bodies 11 and the upper and lower two rear roller bodies 12, without affecting the fixation of the adapter block 13 and the fork arm body 1, ensuring that the fork arm body 1 drives the dust-proof belt body 10 up and down to slide between the front roller body 11 and the rear roller body 12. The limit installation block 25 is used for the installation of the limit block body 26 to ensure that the limit block body 26 is in the correct position; the upper limit position of the forklift is limited by the limit block body 26 to prevent the fork arm body 1 from interfering with the sealing structure. The top of the fork arm lifting base frame 2 is sealed by the top cover plate 27, and the top cover plate 27 also provides the fork arm lifting base frame 2 with an installation and fixing position for the upper roller shutter box 6. The upper sealing plate 28 is used to seal the upper front end of the fork arm lifting base 2, and the lower sealing plate 29 is used to seal the lower front end of the fork arm lifting base 2. The middle sealing plate 30 is used to seal the gap between the fork arm upper cross beam 4 and the fork arm lower cross beam 5. The rear end sealing plate 31 is used to seal the middle and lower rear end of the fork arm lifting base 2.The visible sealing plate 32 is used to seal the upper rear side of the fork arm lifting base 2. At the same time, the visible sealing plate 32 can also observe the operating conditions inside the fork arm lifting base 2. The present invention can separate the interior of the forklift from the surrounding environment to avoid mutual contamination; maintain good sealing performance in different motion states; prevent particles from entering electronic components and sensitive materials, improve the final product performance and safety; reduce aging and wear of the forklift, increase the service life of the forklift, and reduce the maintenance frequency.

[0036] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A sealed forklift for use in a clean room, comprising a fork arm body (1), a fork arm lifting base frame (2) and a fork arm driving mechanism (3), wherein the fork arm body (1) is arranged on one side of the fork arm lifting base frame (2), and the fork arm driving mechanism (3) is arranged on the other side of the fork arm lifting base frame (2), the fork arm driving mechanism (3) is connected to the fork arm body (1), and the fork arm body (1) comprises a fork arm upper cross beam (4) and a fork arm lower cross beam (5); the fork arm driving mechanism (3) drives the fork arm body (1) to move up and down along the fork arm lifting base frame (2), characterized in that: Also included is a dynamic sealing mechanism; The dynamic sealing mechanism comprises an upper rolling curtain box (6), an upper rolling curtain body (7), a lower rolling curtain box (8) and a lower rolling curtain body (9); the upper rolling curtain box (6) is connected to the top of the fork arm lifting base frame (2) via an upper rolling curtain mounting plate (33); the upper rolling curtain body (7) is led out from the upper rolling curtain box (6); the end of the upper rolling curtain body (7) after being led out is connected to the fork arm upper cross beam (4) via an upper rolling curtain pressing plate (34); the lower rolling curtain box (8) is connected to the bottom of the fork arm lifting base frame (2) via a lower rolling curtain mounting plate (35); the lower rolling curtain body (9) is led out from the lower rolling curtain box (8); the end of the lower rolling curtain body (9) after being led out is connected to the fork arm lower cross beam (5) via a lower rolling curtain pressing plate (36); The dynamic sealing mechanism also includes a roller dustproof belt assembly, the roller dustproof belt assembly including a dustproof belt body (10), a front roller body (11), a rear roller body (12), an adapter block (13) and a roller mounting block (14), the dustproof belt body (10) bypasses the rear roller body (12) from the front roller body (11), the front roller body (11) and the rear roller body (12) are both connected to the roller mounting block (14), and the roller mounting block (14) is connected to the fork arm body (1) via the adapter block (13); The fork arm body (1) drives the dustproof belt body (10) up and down to slide between the front roller body (11) and the rear roller body (12); The upper rolling curtain body (7) and the lower rolling curtain body (9) extend and retract following the upward and downward movement of the fork arm body (1).

2. A sealed forklift for use in a clean room according to claim 1, characterized in that: A pressing block (15) is provided on the outer side of the upper part of the dustproof belt body (10), and a tensioning block (16) is connected to the outer side of the pressing block (15); a clamping bolt (17) is connected between the tensioning block (16) and the pressing block (15); An adjustment pressure block (18) is provided on the top of the fork arm lifting base frame (2), and an adjustment bolt (19) is connected between the adjustment pressure block (18) and the top of the tensioning block (16); The tensioning block (16) is formed with upper and lower adjustment holes (20), and the upper and lower adjustment holes (20) are connected with tensioning fixing bolts (21).

3. A sealed forklift for use in a clean room according to claim 2, characterized in that: A dustproof belt mounting plate (22) is provided at the upper bottom end of the fork arm lifting base frame (2), a dustproof belt fixing block (23) is provided above the dustproof belt mounting plate (22), and a dustproof belt pressing block (24) is connected to the upper end of the dustproof belt fixing block (23).

4. A sealed forklift for use in a clean room according to claim 1, characterized in that: The roller dustproof belt assembly is provided with two groups, and the two groups of roller dustproof belt assemblies are symmetrically distributed on the inner side of the fork arm lifting base frame (2); Each group of the roller dustproof belt assembly is provided with two front roller bodies (11) at the top and bottom, and each group of the roller dustproof belt assembly is provided with two rear roller bodies (12) at the top and bottom; each group of the roller dustproof belt assembly is provided with two roller mounting blocks (14) at the top and bottom; and the adapter block (13) is connected between the two roller mounting blocks (14) at the top and bottom. The dustproof belt body (10) is formed with bends at the positions of the upper and lower front roller bodies (11) and the upper and lower rear roller bodies (12).

5. The sealed forklift for use in a clean room according to claim 1, characterized in that: A limit installation block (25) is provided on the side of the fork arm lifting base frame (2), and the lower end of the limit installation block (25) is fixedly connected to a limit block body (26); the bottom of the limit block body (26) is lower than the bottom of the upper roller shutter box (6).

6. A sealed forklift for use in a clean room according to claim 1, characterized in that: It also comprises a static sealing mechanism, the static sealing mechanism comprising a top cover plate (27), the top cover plate (27) being connected to the top of the fork arm lifting base frame (2).

7. A sealed forklift for use in a clean room according to claim 6, characterized in that: The static sealing mechanism further comprises an upper sealing plate (28) and a lower sealing plate (29), wherein the upper sealing plate (28) is connected to the upper outer side of the fork arm lifting base frame (2), and the lower sealing plate (29) is connected to the lower outer side of the fork arm lifting base frame (2).

8. A sealed forklift for use in a clean room according to claim 6, characterized in that: The static sealing mechanism further comprises a middle end sealing plate (30), wherein the middle end sealing plate (30) is connected between the fork arm upper cross beam (4) and the fork arm lower cross beam (5).

9. A sealed forklift for use in a clean room according to claim 6, characterized in that: The static sealing mechanism further comprises a rear end sealing plate (31), wherein the rear end sealing plate (31) is connected to the rear lower side of the fork arm lifting base frame (2).

10. A sealed forklift for use in a clean room according to claim 6, characterized in that: The static sealing mechanism further comprises a visible sealing plate (32), wherein the visible sealing plate (32) is connected to the upper rear side of the fork arm lifting base (2).

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