Anti-vibration and noise-reduction forklift portal frame

Abstract

The utility model relates to the field of forklift assemblies, in particular to an anti-vibration and noise-reduction forklift door frame which comprises an outer door frame body connected with a forklift. The inner door frame is movably arranged on the inner side of the outer door frame; the pallet fork assembly is arranged on the inner portal frame; the power element is provided with a fixed end and a driving end, the fixed end is connected with the outer door frame, and the driving end is connected with the inner door frame; the transmission assembly is arranged among the outer door frame, the inner door frame and the pallet fork assembly and used for driving the pallet fork assembly to move along with the inner door frame; and the lubricating unit is arranged on the inner door frame. The lubricating unit is arranged on the inner portal frame, when the driving assembly drives the oil box to move towards the chain wheel, the chain wheel enters the lubricating groove and extrudes the coating piece, lubricating oil in the oil box is made to immerse the absorbing piece, is conducted to the coating piece along with the absorbing piece and finally acts on the chain wheel and the chain to achieve lubrication, the lubricated chain wheel and chain can slow down rusting, and the service life of the chain wheel is prolonged. Noise during transmission is reduced, and meanwhile, the lifting of the fork arm carrier is kept stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of a fork truck assembly, in particular to an anti-vibration and noise reduction fork truck portal. BACKGROUND

[0002] The fork truck portal is the main load-bearing structure of the fork truck material taking device. According to the requirement of the lifting height of the fork truck, the fork truck portal can be made into two or more stages, and the common fork truck usually adopts a two-stage portal. In the related technology, the two-stage portal is composed of an inner portal and an outer portal, a lifting oil cylinder is installed on the outer portal, the telescopic end of the oil cylinder is connected with the inner portal, a chain wheel is installed on the inner portal, a chain is wound on the chain wheel, one end of the chain is connected with the outer portal, and the other end is connected with the fork frame, when the inner portal rises, the chain wheel rises with the inner portal, and the fork frame is driven to rise through the chain.

[0003] The problem of the related technology is that, since the fork truck works in the external environment for a long time, it is affected by the moisture in the air, the chain wheel and the chain are prone to rust, the rusted chain wheel and chain produce noise during the work of the fork truck, and further, it can cause unstable lifting of the fork frame and other problems. SUMMARY

[0004] In order to keep the fork frame stable when lifting and reduce the noise of the fork truck portal during work, the present application provides an anti-vibration and noise reduction fork truck portal.

[0005] The anti-vibration and noise reduction fork truck portal provided by the present application adopts the following technical scheme:

[0006] An anti-vibration and noise reduction fork truck portal comprises:

[0007] An outer portal connected with the fork truck;

[0008] An inner portal movably arranged on the inner side of the outer portal;

[0009] A fork assembly arranged on the inner portal;

[0010] A power element having a fixed end and a driving end, the fixed end being connected with the outer portal, and the driving end being connected with the inner portal;

[0011] A transmission assembly arranged between the outer portal, the inner portal and the fork assembly, for driving the fork assembly to move with the inner portal;

[0012] A lubricating unit arranged on the inner portal, for lubricating the transmission assembly.

[0013] Optionally, the transmission assembly comprises:

[0014] A chain wheel rotatably mounted on the inner portal;

[0015] A chain passes through the sprocket and is fixed at one end to the outer frame and at the other end to the fork assembly.

[0016] Optionally, the lubricating unit comprises:

[0017] An oil box is installed on the inner frame above the sprocket, and one side of the oil box facing the sprocket is formed with a lubricating groove capable of accommodating part of the sprocket;

[0018] A coating member is arranged on the side of the oil box facing the lubricating groove, one side of the coating member facing the oil box is connected with a sliding rod, and the oil box is provided with a through hole through which the sliding rod extends into the oil box;

[0019] A first elastic member is arranged between the coating member and the oil box;

[0020] An absorbing member is sleeved on the outside of the sliding rod and connected with the coating member, and the lubricating oil can be conducted to the coating member through the absorbing member;

[0021] A driving assembly is installed on the inner frame, and a driving end of the driving assembly is connected with the oil box to drive the oil box to approach or move away from the sprocket.

[0022] Optionally, the oil box is provided with a sealing ring corresponding to the through hole, the sealing ring extends into the oil box, the sliding rod is arranged in the sealing ring, a sealing block is arranged at one end of the sliding rod extending into the oil box, and the diameter of the sealing block is equal to the inner diameter of the sealing ring.

[0023] Optionally, the driving assembly comprises:

[0024] A transmission cam is rotatably installed on the inner frame and abuts against the oil box;

[0025] A transmission shaft is connected with the transmission cam;

[0026] A driver is installed at one end of the transmission shaft to drive the transmission cam to rotate.

[0027] Optionally, the oil box is provided with a driven member on each side, a limiting rod is installed on the inner frame, the driven member is in sliding connection with the limiting rod, and the driving assembly further comprises a second elastic member sleeved on the surface of the limiting rod, one end of the second elastic member abuts against the inner frame, and the other end abuts against the driven member.

[0028] Optionally, the fork assembly comprises a fork frame and a fork body, the fork frame is installed on the inner frame and connected with the chain, and the fork body is detachably installed on the fork frame.

[0029] Optionally, the fork carriage is provided with a crossbar, and the crossbar has several adjustment slots distributed at intervals. The fork body is provided with mounting holes, which cooperate with the adjustment slots. Fasteners are provided in the mounting holes, and one end of the fork body is connected to the crossbar through the fasteners.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] By installing a lubrication unit on the inner mast, when the drive assembly moves the oil box toward the sprocket, the sprocket enters the lubrication groove and squeezes the coating component, causing the coating component and slide bar to slide into the oil box. At this time, the absorber enters the internal space of the oil box, and the lubricating oil in the oil box soaks into the absorber and is conducted to the coating component through the absorber. Finally, the coating component acts on the sprocket and chain to lubricate them. The lubricated sprocket and chain can slow down rusting, reduce noise during transmission, and keep the lifting of the fork carriage stable. Attached Figure Description

[0032] Figure 1 This is a front view structural diagram of an embodiment of this application.

[0033] Figure 2 This is a side view structural diagram of an embodiment of this application.

[0034] Figure 3 This is a cross-sectional structural diagram of the oil box in an embodiment of this application.

[0035] Figure 4 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0036] Figure 5 hour Figure 2 Enlarged schematic diagram of the structure at point B.

[0037] Reference numerals: 1. Outer mast; 2. Inner mast; 3. Fork assembly; 31. Fork carriage; 311. Crossbar; 32. Fork body; 4. Power element; 5. Transmission assembly; 51. Sprocket; 52. Chain; 6. Lubrication unit; 61. Oil box; 62. Coated part; 63. First elastic element; 64. Absorbing element; 65. Drive assembly; 651. Transmission cam; 652. Transmission shaft; 7. Slide rod; 8. Sealing ring; 9. Sealing block; 10. Follower; 11. Limiting rod; 12. Second elastic element; 13. Adjusting groove; 14. Fastener. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0039] This application discloses a vibration-damping and noise-reducing forklift mast. (Refer to...) Figure 1The application relates to an anti-vibration and noise-reducing forklift mast, which comprises an outer mast 1, an inner mast 2 and a fork assembly 3, wherein the outer mast 1 is arranged at the front of the forklift truck head, the inner mast 2 is arranged on the inner side of the outer mast 1, and the fork assembly 3 is arranged on the inner mast 2.

[0040] Specifically, the outer mast 1 has two vertically-extending columns, the lower ends of the two columns are fixed with connecting structures, and the forklift truck head is connected with the outer mast 1 through the connecting structures. It can be understood that an inclination oil cylinder should be arranged on the forklift truck, the telescopic end of the inclination oil cylinder is connected with the outer mast 1, and the angle of the outer mast 1 can be adjusted through the elongation or shortening of the inclination oil cylinder, and the angles of the inner mast 2 and the fork assembly 3 change with the change of the outer mast 1.

[0041] The inner mast 2 also has two vertically-extending columns, which are matched with the columns of the outer mast 1 to enable the inner mast 2 to slide up and down relative to the outer mast 1.

[0042] The fork assembly 3 comprises a fork frame 31 and a fork body 32, the fork body 32 is arranged on the fork frame 31 and the inner mast 2, a cross bar 311 is arranged on the fork frame 31, the upper end of the fork body 32 is overlapped on the cross bar 311, a plurality of adjusting grooves 13 are arranged on the upper end of the cross bar 311, a plurality of mounting holes are arranged on the fork body 32 in correspondence with the adjusting grooves 13, fasteners 14 are arranged in the mounting holes, and the fasteners 14 can be bolts. When the fasteners 14 are screwed into the mounting holes, the lower ends of the fasteners 14 extend into the adjusting grooves 13, so that the upper end of the fork body 32 is fixed, and the plurality of adjusting grooves 13 can facilitate the workers to adjust the position of the fork body 32. Generally, at least two fork bodies 32 are arranged on the fork frame 31, the workers can control the distance between the two fork bodies 32 by adjusting the positions of the two fork bodies 32, so that the fork bodies 32 can be used to lift different sizes of goods, and the practicability and application range of the forklift truck are improved.

[0043] Referring to Figure 1 A power element 4 is arranged at the lower end of the outer mast 1, the driving end of the power element 4 is connected with the top end of the inner mast 2, and the lifting of the inner mast 2 is realized through the power element 4. Preferably, the power element 4 is a hydraulic oil cylinder, which is connected with a hydraulic oil supply device through a hydraulic pipeline, and the elongation or shortening of the hydraulic oil cylinder is realized by supplying hydraulic oil to different positions of the hydraulic oil cylinder, so that the lifting of the inner mast 2 is realized.

[0044] A transmission assembly 5 is arranged between the outer portal 1, the inner portal 2 and the fork frame 31, the transmission assembly 5 comprising a sprocket 51 and a chain 52, wherein the sprocket 51 is fixed to the inner portal 2, the chain 52 is wound over the sprocket 51 from above and one end is fixed to the outer portal 1 and the other end is fixed to the fork frame 31. With the above structure, when the power element 4 drives the inner portal 2 to rise, the sprocket 51 rises accordingly, and with the rising of the sprocket 51, the length of the chain 52 on both sides changes, realizing the lifting of the fork frame 31 with the inner portal 2 through the chain 52.

[0045] In specific work, the inner portal 2 and the fork assembly 3 are both at the lowest position, the operator operates the forklift to move to the goods to be transported, forks the goods through the fork body 32, the power element 4 drives the inner portal 2 and the fork frame 31 to rise, and the goods rises accordingly, and the tilt cylinder installed on the forklift drives the outer portal 1 to rotate by a certain angle, so that the fork body 32 forms a certain angle with the ground, avoiding the goods from falling off the forklift, then the operator operates the forklift to move to the unloading position, the power element 4 drives the inner portal 2 and the fork frame 31 to descend, the tilt cylinder retracts, so that the fork body 32 restores to be parallel to the ground, and then the fork body 32 can be withdrawn.

[0046] Referring to Figure 1 and Figure 4 A lubricating unit 6 is also installed on the inner portal 2, specifically, a horizontal plate is fixed to the top end of the inner portal 2, an L-shaped mounting seat is fixed below the horizontal plate, the above-mentioned sprocket 51 is installed on the L-shaped mounting seat, and the lubricating unit 6 is arranged on the horizontal plate for lubricating the sprocket 51 and the chain 52.

[0047] Further, referring to Figure 3 , a through groove is formed in the horizontal plate, the groove is arranged above the sprocket 51, and the above-mentioned lubricating unit 6 comprises an oil box 61 arranged in the groove, the oil box 61 is preferably arranged in a U-shaped structure, the opening of the oil box 61 is a lubricating groove and faces the sprocket 51, two coating members 62 are arranged on both sides of the lubricating groove of the oil box 61, and the distance between the two coating members 62 is less than the width of the sprocket 51. A perforation is formed in the oil box 61, a sealing ring 8 is arranged on the side of the oil box 61 facing the inside of the oil box 61, a sliding rod 7 is slidably connected in the sealing ring 8, and one end of the sliding rod 7 is connected with the coating member 62.

[0048] When the oil box 61 is moved by an external force towards the sprocket 51, the sprocket 51 approaches the lubricating groove and contacts the two coating members 62 on both sides, and extrudes the two coating members 62, so that the coating members 62 move towards the oil box 61, and the sliding rod 7 moves synchronously with the coating members 62 in the sealing ring 8.

[0049] Further, the lubricating unit 6 further comprises an absorbing member 64 sleeved on the surface of the slide rod 7, when the slide rod 7 moves synchronously with the coating member 62, one end of the slide rod 7 extends into the oil box 61 from the sealing ring 8, the absorbing member 64 contacts with the lubricating oil in the oil box 61, absorbs the lubricating oil and conducts the lubricating oil to the coating member 62, and finally acts on the sprocket 51 between the two coating members 62 to complete the lubrication.

[0050] Preferably, in order to ensure that the lubricating oil can be absorbed by the absorbing member 64 and conducted to the coating member 62, the absorbing member 64 and the coating member 62 are both made of sponge.

[0051] Further, the lubricating unit 6 further comprises a first elastic member 63, which is arranged between the coating member 62 and the oil box 61, when the sprocket 51 is located in the lubricating groove, the coating member 62 is pressed and the first elastic member 63 is compressed, after the sprocket 51 exits from the lubricating groove, the first elastic member 63 restores the deformation, so that the slide rod 7 and the coating member 62 are reset.

[0052] In order to avoid the lubricating oil from leaking from the sealing ring 8, a sealing block 9 is arranged at the end of the slide rod 7 extending into the sealing ring 8, the diameter of the sealing block 9 is equal to the inner diameter of the sealing ring 8. When the coating member 62 is pressed, the slide rod 7 slides into the oil box 61, so that the sealing block 9 is out of the sealing ring 8; when the coating member 62 is reset, the sealing block 9 retreats into the sealing ring 8 to realize sealing.

[0053] Referring to Figure 2 and Figure 5 , the lubricating unit 6 further comprises a driving assembly 65 for driving the oil box 61 to move up and down, the driving assembly 65 comprises a transmission cam 651, a transmission shaft 652 and a driver not shown in the figure. The transmission cam 651 is rotatably installed on the horizontal plate and located above the oil box 61, the upper surface of the oil box 61 abuts against the transmission cam 651; the transmission shaft 652 is key-connected with the transmission cam 651, so that they can rotate synchronously, and the driver is installed at one end of the transmission shaft 652 for providing power for the rotation of the two. Preferably, the driver is an electric motor.

[0054] With the above structure, the transmission cam 651 is driven to rotate by the electric motor, when the farthest end of the transmission cam 651 abuts against the upper surface of the oil box 61, the oil box 61 is in the lowest position, at this time, the sprocket 51 is partially located in the lubricating groove, when the nearest end of the transmission cam 651 abuts against the upper surface of the oil box 61, the oil box 61 is in the highest position, at this time, the sprocket 51 is separated from the lubricating groove.

[0055] The transmission cam 651 can drive the oil box 61 to move from the highest position to the lowest position. In order to reset the oil box 61, a follower 10 is arranged on each side of the oil box 61, and a limiting rod 11 is arranged on the horizontal plate of the inner door frame 2. The follower 10 is sleeved on the limiting rod 11 and can slide up and down. A second elastic member 12 is sleeved on the surface of the limiting rod 11. One end of the second elastic member 12 abuts against the follower 10, and the other end abuts against the inner door frame 2. When the transmission cam 651 drives the oil box 61 to move to the lowest position, the follower 10 slides downward along the limiting rod 11. At this time, the second elastic member 12 is compressed. When the farthest end of the transmission cam 651 passes the oil box 61, the pressure of the transmission cam 651 on the oil box 61 disappears. The second elastic member 12 restores the deformation. The follower 10 drives the oil box 61 to move upward, so that the oil box 61 finally returns to the highest position, thereby completing the lubrication of the chain wheel 51. The first elastic member 63 and the second elastic member 12 can be linear springs.

[0056] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent changes made on the basis of the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A vibration resistant and noise reducing fork lift mast characterized by, The utility model relates to a kind of fork truck lubricating device, including: Outer portal (1) is connected with fork truck; Inner portal (2) is movably arranged in the inner side of outer portal (1); Fork assembly (3) is arranged on the inner portal (2); Power element (4) has fixed end and driving end, the fixed end is connected with outer portal (1), and driving end is connected with inner portal (2); Transmission assembly (5) is arranged between outer portal (1), inner portal (2) and fork assembly (3), for driving fork assembly (3) with inner portal (2) moves; Lubricating unit (6) is arranged on the inner portal (2), for lubricating transmission assembly (5).

2. The anti-vibration and noise reduction forklift mast according to claim 1, characterized in that, The transmission assembly (5) includes: Chain wheel (51) is rotatably installed on the inner portal (2); Chain (52) passes through the chain wheel (51) and one end is fixed on outer portal (1), the other end is fixed on fork assembly (3).

3. The anti-vibration and noise reduction forklift mast according to claim 2, characterized in that, The lubricating unit (6) includes: Oil box (61) is installed on the inner portal (2) and is located above the chain wheel (51), one side of the oil box (61) towards the chain wheel (51) is formed with lubricating groove that can accommodate part of the chain wheel (51); Coating member (62) is arranged on the side of the oil box (61) towards lubricating groove, one side of the coating member (62) towards the oil box (61) is connected with slide rod (7), the oil box (61) is provided with perforation, and the slide rod (7) extends to the oil box (61) through the perforation; First elastic member (63) is arranged between the coating member (62) and the oil box (61); Absorbing member (64) is sleeved on the outer side of the slide rod (7) and is connected with the coating member (62), and lubricating oil can be conducted to the coating member (62) through the absorbing member (64); Drive assembly (65) is installed on the inner portal (2), and the driving end of the drive assembly (65) is connected with the oil box (61) to drive the oil box (61) to be close to or away from the chain wheel (51).

4. The anti-vibration and noise reduction forklift mast according to claim 3, wherein, The oil box (61) is provided with sealing ring (8) corresponding to the perforation, the sealing ring (8) extends into the oil box (61), the slide rod (7) is arranged in the sealing ring (8), and the sealing block (9) is arranged at one end of the slide rod (7) extending into the oil box (61), and the diameter of the sealing block (9) is equal to the inner diameter of the sealing ring (8).

5. The anti-vibration and noise reduction forklift mast according to claim 3, wherein, The drive assembly (65) includes: Transmission cam (651) is rotatably installed on the inner portal (2) and abuts with the oil box (61); Transmission shaft (652) is keyed connected with the transmission cam (651); Driver is installed on one end of the transmission shaft (652) to drive the transmission cam (651) to rotate.

6. The anti-vibration and noise reduction forklift mast according to claim 4, wherein, Both sides of the oil box (61) are provided with driven member (10), and the inner portal (2) is provided with limiting rod (11), the driven member (10) is slidably connected with the limiting rod (11), and the drive assembly (65) further includes second elastic member (12) sleeved on the surface of the limiting rod (11), one end of the second elastic member (12) abuts with the inner portal (2), and the other end abuts with the driven member (10).

7. The anti-vibration and noise reduction forklift mast according to claim 1, wherein, The fork assembly (3) comprises a fork frame (31) and a fork body (32), the fork frame (31) is arranged on the inner portal (2) and connected with the chain (52), and the fork body (32) is detachably arranged on the fork frame (31).

8. The anti-vibration and noise reduction forklift mast according to claim 7, characterized in that, A crossbar (311) is arranged on the fork frame (31), a plurality of adjusting grooves (13) are arranged on the crossbar (311) at intervals, an installation hole is arranged on the fork body (32), the installation hole is matched with the adjusting groove (13), a fastener (14) is arranged in the installation hole, and one end of the fork body (32) is connected with the crossbar (311) through the fastener (14).

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