Heavy tray elevator

Abstract

The utility model relates to the technical field of elevators, in particular to a heavy tray elevator which comprises an elevator rack and a tray slidably arranged on the elevator rack in the height direction, and the elevator rack is provided with an elevator mechanism used for driving the tray to ascend and descend. And a load reduction mechanism for reducing the load of the elevator mechanism is arranged between the lifting mechanism and the tray. The lifting mechanism can lift the tray, so that the heavy object on the tray can be lifted to the corresponding height, and the transfer of the heavy object is completed. And the load reduction mechanism can reduce the load of the lifting mechanism, so that the working state of the lifting mechanism is more stable, and the possibility of falling accidents caused by faults of the lifting mechanism is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a heavy pallet elevator. Background Art

[0002] As a highly efficient logistics and transportation equipment, heavy-duty pallet lifters play an irreplaceable role in modern industrial production and logistics transportation. Their main purpose is to vertically lift heavy goods and pallets to achieve fast and safe delivery of goods between different heights. On industrial production lines, heavy-duty pallet lifters are often used to lift heavy raw materials, semi-finished products or finished products to the specified height of the production line, thereby accelerating the production process and improving production efficiency. In addition, in the field of warehousing logistics and port loading and unloading, heavy-duty pallet lifters are also indispensable auxiliary equipment, which can greatly reduce manual labor intensity, improve cargo loading and unloading efficiency, optimize storage space utilization, and promote the automation and intelligence of logistics operations.

[0003] The heavy-duty pallet lift is mainly composed of key components such as the lifting frame, the lifting body, and the electrical control system. Its structural design fully considers the load-bearing capacity, stability, and durability. It usually adopts high-strength steel structure or aluminum alloy materials to ensure that it can safely carry several tons or even more than ten tons of heavy goods. During use, the pallet loaded with heavy objects is first placed on the lifting frame, and then the lift is started through the electrical control system. The motor drives the transmission device to drive the lifting body to rise until the pallet is lifted to the preset height. After reaching the target height, the operator can move the pallet to the specified position to complete the vertical transmission of the goods. This series of operations is smooth and efficient, reflecting the important value of the heavy-duty pallet lift in logistics and transportation.

[0004] Although durability and stability have been taken into consideration as much as possible during the design and manufacturing of heavy-duty pallet lifts, the motor, as its core power source, not only needs to overcome the weight of heavy objects to lift during long-term high-load operation, but also needs to overcome the friction between the lift body and the lifting frame when the lift body rises. Therefore, when the motor works at high load for a long time, it may fail, which may easily cause safety accidents, so the heavy-duty pallet lift needs to be improved. Utility Model Content

[0005] In order to reduce the possibility of failure of the motor after long-term operation, the present application provides a heavy-duty pallet lift.

[0006] The present application provides a heavy-duty pallet lift, which adopts the following technical solution:

[0007] A heavy-duty pallet lift comprises a lifting frame and a pallet slidably arranged on the lifting frame along a height direction, the lifting frame is provided with a lifting mechanism for driving the pallet to rise and fall, and a load reduction mechanism for reducing the load of the lifting mechanism is provided between the lifting mechanism and the pallet.

[0008] By adopting the above technical solution, the lifting mechanism in the present application can lift the pallet, so that the heavy objects on the pallet can rise to the corresponding height, completing the transfer of the heavy objects. The load reduction mechanism can reduce the load of the lifting mechanism, making the working state of the lifting mechanism more stable, and reducing the possibility of falling accidents caused by failure of the lifting mechanism.

[0009] Optionally, the lifting mechanism includes two rotating shafts arranged on the top of the lifting frame and a driving member coaxially fixed to one of the rotating shafts, and the load relief mechanism is used to drive and connect the two rotating shafts and the tray.

[0010] By adopting the above technical solution, when the heavy objects on the pallet need to be lifted and transported, the driving member works to drive one of the rotating shafts to rotate, and the lifting of the heavy objects on the pallet is achieved through the transmission of the load reduction mechanism.

[0011] Optionally, the load reduction mechanism includes a first sprocket, a second sprocket, a first chain, a second chain and a counterweight, and multiple groups of the first sprockets are arranged on the two rotating shafts at intervals and one-to-one, and multiple groups of the first chains are arranged corresponding to each of the first sprockets, and one end of each of the first chains is connected to the top of the counterweight, and the other end is connected and fixed to the top of one side of the tray after passing through the first sprockets on the two rotating shafts, and each of the first chains is respectively meshed with the corresponding first sprocket;

[0012] There are multiple groups of second sprockets, and each of the second sprockets is arranged at intervals on a rotating shaft. There are multiple groups of second chains corresponding to each of the second sprockets, one end of each of the second chains is connected to the top of the counterweight member, and is connected and fixed to the top of the other side of the pallet after passing through a rotating shaft; the counterweight member is slidably installed on the side wall of the lifting frame, one end of the first chain is fixedly connected to the top of the counterweight member, and the other end is connected and fixed to the top of one side of the pallet after passing through the rotating shaft, and each of the second chains is respectively engaged with the corresponding second sprocket.

[0013] By adopting the above technical solution, since the driving member is the power source of the entire elevator, its job is to lift the heavy objects on the pallet to the corresponding height by outputting power, and it often bears a large load when working. The first sprocket, the second sprocket, the first chain and the second chain can connect the counterweight member with the driving member. When the driving member lifts the heavy object through the rotating shaft, the counterweight member can assist the rotation of the rotating shaft so that part of the weight of the heavy object on the pallet is offset by the gravity of the counterweight member, thereby reducing the pressure output by the driving member, thereby reducing the possibility of driving member failure and extending the service life of the driving member, thereby ensuring the stability of the lifting process and reducing the possibility of heavy objects falling due to driving member failure.

[0014] Optionally, T-shaped rails are provided on both sides of the lifting frame corresponding to the lifting of the pallet, and a plurality of stabilizing mechanisms for stably lifting the pallet are provided on the pallet corresponding to the T-shaped rails.

[0015] By adopting the above technical solution, the stabilizing mechanism can enable the driving member to lift the tray more stably, making the lifting process of the heavy object more stable and safer.

[0016] Optionally, the stabilizing mechanism includes a mounting frame and a group of first rollers rotating on the mounting frame, and the rotation axes of two first rollers are parallel to each other and respectively roll and fit on two side walls of the T-shaped track.

[0017] By adopting the above technical solution, when the driving member drives the pallet to lift, the two first rollers rotate and fit with the two side walls of the T-shaped track, thereby improving the stability of the pallet when lifting and making the lifting process safer.

[0018] Optionally, the stabilizing mechanism further includes a second roller disposed on the tray, wherein the second roller and the first roller have rotation axes perpendicular to each other and roll in contact with ends formed by two side walls of the T-shaped track.

[0019] By adopting the above technical solution, the second roller can further limit the position of the pallet, making the pallet more stable when being lifted along the T-track.

[0020] Optionally, an anti-falling mechanism is provided between the pallet and the T-shaped track for preventing the pallet from falling.

[0021] By adopting the above technical solution, the anti-falling mechanism can reduce the possibility of falling accidents caused by driving parts or other reasons, making the lifting process safer.

[0022] Optionally, the anti-fall mechanism includes an acceleration sensor, a bidirectional electric telescopic rod, a connecting rod and a clamping wheel, the bidirectional electric telescopic rod is electrically connected to the acceleration sensor, the bidirectional electric telescopic rod is installed on the side wall of the pallet and directly opposite to the T-shaped track, the connecting rod and the clamping wheel are respectively provided in two groups corresponding to the two ends of the bidirectional electric telescopic rod, and the clamping wheels are grouped in pairs, the two connecting rods are respectively transmission-connected to the ends of the bidirectional electric telescopic rod, and the two clamping wheels are fixedly installed on the ends of the connecting rod and directly opposite to the two side walls of the T-shaped track;

[0023] When the bidirectional electric telescopic rod drives the two connecting rods to contract, the two groups of clamping wheels can approach each other and abut against the corresponding side walls of the T-shaped track.

[0024] By adopting the above technical solution, when the pallet suddenly falls, the acceleration sensor detects the sudden acceleration of the pallet. At this time, the bidirectional electric telescopic rod contracts, and the two ends of the bidirectional electric telescopic rod respectively drive the two connecting rods to rotate, so that the two clamping wheels at the ends of the two connecting rods are clamped and fixed to the side walls of the T-shaped track, thereby slowing down the fall of the pallet or even stopping the fall of the pallet.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The lifting mechanism in the present application can lift the pallet so that the heavy objects on the pallet can rise to the corresponding height to complete the transfer of the heavy objects, while the load reduction mechanism can reduce the load of the lifting mechanism, making the working state of the lifting mechanism more stable and reducing the possibility of falling accidents caused by failure of the lifting mechanism;

[0027] 2. When the pallet falls suddenly, the acceleration sensor detects the sudden acceleration of the pallet. At this time, the two-way electric telescopic rod contracts, and the two ends of the two-way electric telescopic rod respectively drive the two connecting rods to rotate, so that the two clamping wheels at the ends of the two connecting rods are clamped and fixed to the side walls of the T-shaped track, thereby slowing down the fall of the pallet or even stopping the fall of the pallet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the heavy-duty pallet lift in the embodiment of the present application;

[0029] Figure 2 yes Figure 1 Schematic diagram of some structures of medium and heavy pallet lifts;

[0030] Figure 3 It is a structural diagram of the anti-fall mechanism.

[0031] Figure numerals: 1. lifting frame; 11. tray; 2. lifting mechanism; 21. driving member; 22. rotating shaft; 3. load reduction mechanism; 31. first sprocket; 32. second sprocket; 33. first chain; 34. second chain; 35. counterweight; 4. T-track; 5. stabilizing mechanism; 51. first roller; 52. second roller; 6. anti-fall mechanism; 61. bidirectional electric telescopic rod; 62. connecting rod; 63. clamping wheel. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 , further details of this application are given.

[0033] The embodiment of the present application discloses a heavy-duty pallet lift.

[0034] A heavy-duty pallet 11 lift, reference Figure 1 , including a lifting frame 1 and a tray 11 slidably arranged on the lifting frame 1 along the height direction, the lifting frame 1 is provided with a lifting mechanism 2 for driving the tray 11 to rise and fall, and a load reduction mechanism 3 for reducing the load of the lifting mechanism is provided between the lifting mechanism 2 and the tray 11.

[0035] The lifting mechanism 2 includes two rotating shafts 22 arranged on the top of the lifting frame 1 and a driving member 21 coaxially fixed to one of the rotating shafts 22 . The load relief mechanism 3 is used for drivingly connecting the two rotating shafts 22 and the tray 11 .

[0036] Reference Figure 1 and Figure 2 The load reduction mechanism 3 includes a first sprocket 31, a second sprocket 32, a first chain 33, a second chain 34 and a counterweight 35. Multiple groups of first sprockets 31 are arranged on the two rotating shafts 22 at intervals and one by one. Multiple groups of first chains 33 are arranged corresponding to each first sprocket 31, and one end of each first chain 33 is connected to the top of the counterweight 35, and the other end is connected and fixed to the top of one side of the tray 11 after passing through the first sprockets 31 on the two rotating shafts 22, and each first chain 33 is respectively engaged with the corresponding first sprocket 31;

[0037] Reference Figure 1 and Figure 2 , multiple groups of second sprockets 32 are provided, and each second sprocket 32 ​​is coaxially and spaced apart on a rotating shaft 22, and multiple groups of second chains 34 are provided corresponding to each second sprocket 32, one end of each second chain 34 is connected to the top of the counterweight 35, and is connected and fixed to the top of the other side of the pallet 11 after passing through a rotating shaft 22; the counterweight 35 is slidably installed on the side wall of the lifting frame 1, one end of the first chain 33 is fixedly connected to the top of the counterweight 35, and the other end is connected and fixed to the top of one side of the pallet 11 after passing through the rotating shaft 22, and each second chain 34 is respectively engaged with the corresponding second sprocket 32.

[0038] T-shaped rails 4 are provided on both sides of the lifting frame 1 corresponding to the lifting of the pallet 11 , and a plurality of stabilizing mechanisms 5 for stably lifting the pallet 11 are provided on the pallet 11 corresponding to the T-shaped rails 4 .

[0039] Reference Figure 1 and Figure 2 The stabilizing mechanism 5 includes a mounting frame and a group of first rollers 51 rotating on the mounting frame. The rotation axes of the two first rollers 51 are parallel to each other and respectively roll and fit on the two side walls of the T-shaped track 4.

[0040] Reference Figure 1 and Figure 2 The stabilizing mechanism 5 further includes a second roller 52 disposed on the tray 11 . The second roller 52 and the first roller 51 have rotation axes that are perpendicular to each other and roll in contact with the ends formed by the two side walls of the T-shaped track 4 .

[0041] In order to reduce the possibility of a falling accident due to a failure of the driving member 21 or other reasons and to ensure the safety of the lifting process, an anti-falling mechanism 6 is provided between the pallet 11 and the T-shaped track 4 to prevent the pallet 11 from falling.

[0042] Reference Figure 2 and Figure 3 The anti-fall mechanism 6 includes an acceleration sensor, a bidirectional electric telescopic rod 61, a connecting rod 62 and a clamping wheel 63. The bidirectional electric telescopic rod 61 is electrically connected to the acceleration sensor. The bidirectional electric telescopic rod 61 is installed on the side wall of the tray 11 and is directly opposite to the T-shaped track 4. The connecting rod 62 and the clamping wheel 63 are respectively arranged in two groups corresponding to the two ends of the bidirectional electric telescopic rod 61, and the clamping wheels 63 are grouped in pairs. The two connecting rods 62 are respectively connected to the ends of the bidirectional electric telescopic rod 61 in a transmission manner. The two clamping wheels 63 are fixedly installed at the ends of the connecting rod 62 and are directly opposite to the two side walls of the T-shaped track 4.

[0043] When the bidirectional electric telescopic rod 61 drives the two connecting rods 62 to retract, the two sets of clamping wheels 63 can approach each other and abut against the corresponding side walls of the T-shaped track 4 .

[0044] In other embodiments, the anti-fall mechanism 6 may also be in the form of an electric clamp. In the present application, the anti-fall mechanism 6 is not shown in the overall diagram of the heavy pallet 11 lifting machine.

[0045] The implementation principle of a heavy-duty pallet 11 lifting machine according to the embodiment of the present application is as follows: when the heavy objects on the pallet 11 need to be lifted and transported, the driving member 21 works to drive one of the rotating shafts 22 to rotate. When the driving member 21 lifts the heavy objects through the rotating shaft 22, the counterweight 35 can assist the rotation of the rotating shaft 22, so that the weight of a part of the heavy objects on the pallet 11 is offset by the gravity of the counterweight 35, thereby reducing the pressure output by the driving member 21, thereby reducing the possibility of failure of the driving member 21, and extending the service life of the driving member 21, so as to ensure the stability of the lifting process and reduce the possibility of heavy objects falling due to failure of the driving member 21;

[0046] When the pallet 11 suddenly falls, the acceleration sensor detects the sudden acceleration of the pallet 11. At this time, the bidirectional electric telescopic rod 61 contracts, and the two ends of the bidirectional electric telescopic rod 61 respectively drive the two connecting rods 62 to rotate, so that the two clamping wheels 63 at the ends of the two connecting rods 62 are clamped and fixed to the side walls of the T-shaped track 4, thereby slowing down the fall of the pallet 11 or even stopping the fall of the pallet 11.

[0047] 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 heavy pallet (11) lift, characterized in that: The invention comprises a lifting frame (1) and a tray (11) slidably arranged on the lifting frame (1) in a height direction, the lifting frame (1) is provided with a lifting mechanism (2) for driving the tray (11) to move up and down, and a load reduction mechanism (3) for reducing the load of the lifting mechanism (2) is provided between the lifting mechanism (2) and the tray (11).

2. The heavy pallet (11) lifter according to claim 1, characterized in that: The lifting mechanism (2) comprises two rotating shafts (22) arranged on the top of the lifting frame (1) and a driving member (21) fixed coaxially with one of the rotating shafts (22), and the load reduction mechanism (3) is used to drive the two rotating shafts (22) and the tray (11) to be connected.

3. The heavy pallet (11) lifter according to claim 2, characterized in that: The load reduction mechanism (3) comprises a first sprocket (31), a second sprocket (32), a first chain (33), a second chain (34) and a counterweight (35); a plurality of groups of the first sprockets (31) are arranged on the two rotating shafts (22) at intervals and in one-to-one correspondence; a plurality of groups of the first chains (33) are arranged corresponding to each of the first sprockets (31); one end of each of the first chains (33) is connected to the top of the counterweight (35); the other end of each of the first chains (33) is connected and fixed to the top of one side of the tray (11) after passing through the first sprockets (31) on the two rotating shafts (22); and each of the first chains (33) is meshed with the corresponding first sprocket (31); The second sprockets (32) are provided in a plurality of groups, and each of the second sprockets (32) is arranged at intervals on a rotating shaft (22). The second chains (34) are provided in a plurality of groups corresponding to each of the second sprockets (32). One end of each of the second chains (34) is connected to the top of the counterweight (35), and is connected and fixed to the top of the other side of the pallet (11) after passing through a rotating shaft (22); the counterweight (35) is slidably mounted on the side wall of the lifting frame (1), one end of the first chain (33) is fixedly connected to the top of the counterweight (35), and the other end is connected and fixed to the top of one side of the pallet (11) after passing through the rotating shaft (22), and each of the second chains (34) is respectively meshed with the corresponding second sprocket (32).

4. The heavy-duty pallet (11) lifter according to claim 1, characterized in that: The lifting frame (1) is provided with T-shaped rails (4) on both sides corresponding to the lifting of the pallet (11), and the pallet (11) is provided with a plurality of stabilizing mechanisms (5) corresponding to the T-shaped rails (4) for stably lifting the pallet (11).

5. The heavy pallet (11) lifter according to claim 4, characterized in that: The stabilizing mechanism (5) comprises a mounting frame and a group of first rollers (51) rotating on the mounting frame, wherein the rotation axes of the two first rollers (51) are parallel to each other and respectively roll and fit on the two side walls of the T-shaped track (4).

6. The heavy pallet (11) lifter according to claim 5, characterized in that: The stabilizing mechanism (5) further comprises a second roller (52) arranged on the tray (11); the second roller (52) and the first roller (51) have rotation axes perpendicular to each other and roll in contact with the ends formed by the two side walls of the T-shaped track (4).

7. The heavy pallet (11) lifter according to claim 4, characterized in that: An anti-falling mechanism (6) for preventing the pallet (11) from falling is provided between the pallet (11) and the T-shaped track (4).

8. The heavy pallet (11) lifter according to claim 7, characterized in that: The anti-fall mechanism (6) comprises an acceleration sensor, a bidirectional electric telescopic rod (61), a connecting rod (62) and a clamping wheel (63); the bidirectional electric telescopic rod (61) is electrically connected to the acceleration sensor; the bidirectional electric telescopic rod (61) is mounted on the side wall of the tray (11) and faces the T-shaped track (4); two groups of the connecting rod (62) and the clamping wheel (63) are respectively arranged corresponding to the two ends of the bidirectional electric telescopic rod (61); two of the clamping wheels (63) form a group; the two connecting rods (62) are respectively transmission-connected to the ends of the bidirectional electric telescopic rod (61); the two clamping wheels (63) are fixedly mounted on the ends of the connecting rod (62) and face the two side walls of the T-shaped track (4); When the bidirectional electric telescopic rod (61) drives the two connecting rods (62) to retract, the two groups of clamping wheels (63) can approach each other and abut against corresponding side walls of the T-shaped track (4).

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