Novel pallet fork lifting appliance device

Abstract

The utility model provides a novel pallet fork lifting appliance device, and belongs to the technical field of crane lifting appliances. The novel pallet fork lifting appliance device comprises a pulley, a cross beam frame, a rotating mechanism, an L-shaped beam frame, an X-axis translation mechanism, a Y-axis telescopic mechanism, a pallet fork and a fork arm frame, the lower part of the middle part of the cross beam frame is rotationally connected with the L-shaped beam frame; the rotating mechanism is arranged on the cross beam frame, is in transmission connection with the L-shaped beam frame and drives the L-shaped beam frame to rotate; the lower end of the L-shaped beam frame is provided with a pair of fork arm frames, the L-shaped beam frame is provided with an X-axis translation mechanism which is in transmission connection with the fork arm frames, and the fork arm frames move in the X-axis direction; the pallet fork is arranged on the fork arm frame in a sliding mode in the Y-axis direction, and the Y-axis telescopic mechanism is arranged on the fork arm frame, is in transmission connection with the pallet fork and drives the pallet fork to move in the Y-axis direction. Under the cooperation of a travelling crane, the fork is driven to freely rotate in multiple directions through the lifting appliance rotating mechanism, so that goods can be safely and conveniently carried under the conditions of narrow space and limited space.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane hoisting devices, and in particular relates to a novel fork hoisting device. Background Art

[0002] Currently, large cargoes are transported in factories or warehouses mostly by using cranes in combination with slings. However, some slings have limited application scenarios, are inconvenient to use, and are inefficient.

[0003] Chinese utility model patent application number 201921664061.2 discloses a lifting device that forms a C-shaped structure by arranging an upper crossbeam, a column mounted below the upper crossbeam, a base plate connected to the column, and a fork for lifting a weight. This device allows for the installation of weights on the production line, eliminating the need for additional installation stations. The lifting device, with the weights on its fork, can be moved by a crane.

[0004] However, the aforementioned lifting device utilizes multiple lifting rings, which results in a fixed opening direction for the C-shaped lifting device, limiting it to a single-direction forklift operation. This results in low efficiency, unsafe operation, and numerous inconveniences when operating in complex working environments, such as in the corners of factory buildings and warehouses. Furthermore, the fork spacing is fixed and cannot be flexibly adjusted to accommodate the varying sizes of objects being hoisted. This limits the use of the forklift, which can only be used for a single size of object. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a novel fork lift device in view of the deficiencies in the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A novel fork lift device includes at least two fixed pulleys, a crossbeam frame, a rotating mechanism, an L-shaped beam frame, an X-axis translation mechanism, a Y-axis telescopic mechanism, a fork, and a fork arm frame;

[0008] The two fixed pulleys are fixedly mounted on the upper surfaces of both ends of the crossbeam frame, and the lower middle portion of the crossbeam frame is rotatably connected to the L-shaped beam frame; the rotating mechanism is arranged on the crossbeam frame, and the rotating mechanism is transmission-connected to the L-shaped beam frame, and the rotating mechanism drives the L-shaped beam frame to rotate;

[0009] A pair of fork arms are slidably provided at the lower end of the L-shaped beam frame, namely a first fork arm frame and a second fork arm frame. An X-axis translation mechanism is fixedly installed on the L-shaped beam frame, and the X-axis translation mechanism is transmission-connected to the first fork arm frame and the second fork arm frame. The X-axis translation mechanism drives the first fork arm frame and the second fork arm frame to move along the X-axis simultaneously;

[0010] The forklift forks are slidably arranged on the fork arm frame along the Y-axis. The Y-axis telescopic mechanism is fixedly arranged on the fork arm frame. The Y-axis telescopic mechanism is in transmission connection with the forklift forks, and the Y-axis telescopic mechanism drives the forklift forks to move along the Y-axis.

[0011] The rotation mechanism includes a rotation mechanism drive and a rotary support for the rotation mechanism gear. The inner ring of the rotary support is fixedly connected to both the cross beam frame. The outer ring of the rotary support is fixedly connected to both the L-shaped beam frame. The rotation mechanism drive is fixedly installed on the cross beam frame. The rotation mechanism gear is fixedly installed at the power output end of the rotation mechanism. The rotation mechanism gear meshes with the rotary support.

[0012] A plurality of X-axis sliding rails are arranged inside the lower end of the L-shaped beam frame. The L-shaped beam frame is slidably connected to the first fork arm frame and the second fork arm frame through a plurality of X-axis sliding rails.

[0013] The X-axis translation mechanism includes an X-axis translation drive, a translation drive gear, a first rack and a second rack. The X-axis translation drive is fixedly installed on the L-shaped beam frame. The translation drive gear is fixedly installed at the output shaft end of the X-axis translation drive. The first rack and the second rack are parallel in the X-axis direction and their tooth surfaces face each other and are respectively fixedly connected to the first fork arm frame and the second fork arm frame. The first rack and the second rack are simultaneously meshed with the translation drive gear.

[0014] A plurality of Y-axis sliding rails are arranged above the fork arm frame. The forklift forks are slidably connected to the fork arm frame through a plurality of Y-axis sliding rails.

[0015] The Y-axis telescopic mechanism includes a Y-axis telescopic drive, at least 4 telescopic members, and telescopic member output shaft heads. At least two telescopic members are fixedly installed on each of the first fork arm frame and the second fork arm frame. The telescopic member output shaft heads are respectively fixedly connected to the first forklift fork and the second forklift fork. The Y-axis telescopic mechanism drives the telescopic members to synchronously drive the first forklift fork and the second forklift fork to move along the Y-axis sliding rails.

[0016] With the above solution, by setting the cross beam frame, the rotation mechanism, the L-shaped beam frame, the X-axis translation mechanism, the Y-axis telescopic mechanism, the forklift forks, and the fork arm frame, and cooperating with the overhead crane, the forklift fork spreader can be rotated at multiple angles, so as to realize convenient handling of goods in narrow, space-limited, irregularly positioned, and stacked situations, and cooperate with the overhead crane to achieve high-efficiency handling of goods in multiple scenarios and with multiple degrees of freedom.

[0017] As a preferred embodiment, the rotation mechanism further includes a reducer. The reducer is fixedly installed on the cross beam frame. The power output end of the rotation mechanism drive is fixedly connected to the power input end of the reducer. The rotation mechanism gear is fixedly installed at the power output end of the reducer.

[0018] With the above solution, the rotating mechanism can increase the output torque while reducing the rotational speed, reduce the inertia of the load, make the power transmission more stable, and thus improve the transmission accuracy.

[0019] As a preferred embodiment, the telescopic member is one of an electric push rod and a hydraulic rod, and the Y-axis telescopic drive uses a power module that cooperates with the telescopic member, and a kind of hydraulic cylinder.

[0020] As a preferred embodiment, the slide rail includes a slider and a slide rail strip, and the slider is slidably connected to the slide rail strip.

[0021] As a preferred embodiment, limit sensors are fixedly installed on both the rotating mechanism and the X-axis translation mechanism.

[0022] With the above solution, when the rotating mechanism is working, the limit sensor monitors that its rotation angle is not greater than 360 degrees to prevent the rotating mechanism from driving the L-shaped crossbeam beyond the safe position; and when the X-axis translation mechanism is working, it monitors that the forklift works safely within the specified stroke to prevent danger or damage.

[0023] As a preferred embodiment, an internally toothed friction ratchet that rolls unidirectionally against the reverse Y-axis is installed on one side of the forklift near the fork end, and the outer surface of the internally toothed friction ratchet that rolls unidirectionally against the reverse Y-axis is a friction surface.

[0024] With the above solution, under the action of the gravity of the goods, the internally toothed friction ratchet that rolls unidirectionally against the reverse Y-axis can increase the friction between the goods and the forklift when lifting the goods, making it difficult for the goods to slide and being safer!

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows: With the cooperation of the overhead crane, the forklift can be driven by the hoist rotating mechanism to rotate freely in multiple directions, so as to realize convenient handling of goods in the case of narrow space, limited space, corners or workshops where large forklifts are inconvenient to enter, and irregular and stacked positions of goods. It cooperates with the overhead crane to achieve high-efficiency handling of goods in multiple scenarios and with multiple degrees of freedom. In addition, by setting limit sensors and friction ratchets, the safety is further increased while improving the efficiency, and the occurrence of safety accidents is reduced to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following further describes the present utility model in detail with reference to the drawings.

[0027] Figure 1 : Front view of the present utility model;

[0028] Figure 2 : Enlarged view of the structure at position A of the present utility model;

[0029] Figure 3: Enlarged view of the structure at position B of the present utility model;

[0030] Figure 4 : Three-dimensional axial schematic diagram of the partial structure of the present utility model;

[0031] Among them, 1. Fixed pulley; 2. Crossbeam frame; 3. Rotating mechanism; 31. Rotating mechanism drive; 32. Reducer; 33. Rotating mechanism gear; 34. Slewing bearing; 4. L-shaped beam frame; 5. X-axis translation mechanism; 51. Translation drive gear; 52. X-axis translation drive; 53. First rack; 54. Second rack; 6. Slide rail; 61. Slide block; 62. Slide rail strip; 7. Y-axis telescopic mechanism; 71. Telescopic member; 72. Output shaft head of the telescopic member; 73. Y-axis telescopic drive; 8. Fork; 81. First fork; 82. Second fork; 83. Internal tooth friction ratchet; 9. Fork arm frame; 91. First fork arm frame; 92. Second fork arm frame. Detailed implementation manners

[0032] To better understand the present utility model, the content of the present utility model will be further clearly elaborated below in conjunction with embodiments. However, the protected content of the present utility model is not limited to the following embodiments. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.

[0033] A new type of fork hoisting device: including at least two fixed pulleys 1, a crossbeam frame 2, a rotating mechanism 3, an L-shaped beam frame 4, an X-axis translation mechanism 5, a Y-axis telescopic mechanism 7, a fork 8, and a fork arm frame 9;

[0034] The two fixed pulleys 1 are fixedly installed on the upper surfaces at both ends of the crossbeam frame 2, and the lower part in the middle of the crossbeam frame 2 is rotatably connected to the L-shaped beam frame 4; the rotating mechanism is arranged on the crossbeam frame 2, and the rotating mechanism is in transmission connection with the L-shaped beam frame 4, and the rotating mechanism 3 drives the L-shaped beam frame 4 to rotate;

[0035] A pair of fork arm frames, namely a first fork arm frame 91 and a second fork arm frame 92, are slidably arranged at the lower end of the L-shaped beam frame 4. The X-axis translation mechanism 5 is fixedly installed on the L-shaped beam frame 4. The X-axis translation mechanism 5 is respectively in transmission connection with the first fork arm frame 91 and the second fork arm frame 92, and the X-axis translation mechanism 5 simultaneously drives the first fork arm frame 91 and the second fork arm frame 92 to move along the X-axis direction;

[0036] The fork 8 is slidably arranged on the fork arm frame along the Y-axis direction. The Y-axis telescopic mechanism 7 is fixedly arranged on the fork arm frame 9. The Y-axis telescopic mechanism 7 is in transmission connection with the fork 8, and the Y-axis telescopic mechanism 7 drives the fork 8 to move along the Y-axis direction.

[0037] The rotation mechanism 3 includes a rotation mechanism drive 31, a rotation mechanism gear 33, and a slewing bearing 34. The inner ring of the slewing bearing 34 is fixedly connected to the crossbeam frame 2, and the outer ring of the slewing bearing 34 is fixedly connected to the L-shaped beam frame 4. The rotation mechanism drive 31 is fixedly installed on the crossbeam frame 2, and the rotation mechanism gear 33 is fixedly installed at the power output end of the rotation mechanism. The rotation mechanism gear 33 meshes with the slewing bearing 34.

[0038] Inside the lower end of the L-shaped beam frame 4, there are multiple X-axis guide rails 6. The L-shaped beam frame 4 is slidably connected to the first fork arm frame 91 and the second fork arm frame 92 through the multiple X-axis guide rails 6.

[0039] The X-axis translation mechanism 5 includes an X-axis translation drive 52, a translation drive gear 51, a first rack 53, and a second rack 54. The X-axis translation drive 52 is fixedly installed on the L-shaped beam frame 4, and the translation drive gear 51 is fixedly installed at the output shaft end of the X-axis translation drive 52. The first rack 53 and the second rack 54 are parallel in the X-axis direction and face each other with their tooth surfaces, and are respectively fixedly connected to the first fork arm frame 91 and the second fork arm frame 92. The first rack 53 and the second rack 54 are simultaneously meshed with the translation drive gear 51.

[0040] Above the fork arm frame 9, there are multiple Y-axis guide rails 6. The fork 8 is slidably connected to the fork arm frame 9 through the multiple Y-axis guide rails 6.

[0041] The Y-axis telescoping mechanism includes a Y-axis telescoping drive 73 and at least four telescoping members 71. At least two telescoping members 71 are fixedly installed on the first fork arm frame 91 and the second fork arm frame 92 respectively. The output shaft heads 72 of the telescoping members are respectively fixedly connected to the first fork 81 and the second fork 82. The Y-axis telescoping mechanism 73 drives the telescoping members 71 to synchronously drive the output shaft heads 72 of the telescoping members, thereby driving the first fork 81 and the second fork 82 to move along the Y-axis guide rails.

[0042] With the above solution, the guide rails arranged along the Y-axis play a role of guiding and constraining during the telescoping process of the fork, and can also bear part of the vertical downward pressure of the goods, thereby increasing the service life of the telescoping members.

[0043] The rotation mechanism 3 further includes a reducer 32. The reducer 32 is fixedly installed on the crossbeam frame 2. The power output end of the rotation mechanism drive 31 is fixedly connected to the power input end of the reducer 32, and the rotation mechanism gear 33 is fixedly installed at the power output end of the reducer 32.

[0044] With the above solution, the rotation mechanism can increase the output torque while reducing the rotational speed, reduce the inertia of the load, make the power transmission more stable, and thus improve the transmission accuracy.

[0045] The telescopic member 71 is one of an electric push rod and a hydraulic rod, and the Y-axis telescopic drive adopts a power module that cooperates with the telescopic member 71, and one kind of hydraulic cylinder.

[0046] The slide rail 6 includes a slider 61 and a slide rail bar 62, and the slider 61 is slidably connected to the slide rail bar 62.

[0047] Limit sensors are fixedly installed on both the rotating mechanism 3 and the X-axis translation mechanism 5.

[0048] Adopting the above solution, when the limit sensor monitors the rotation angle of the rotating mechanism during its operation, when the rotation angle is close to 360 degrees, the limit sensor can send a signal in time, so as to cut off the power transmission and prevent the rotating mechanism from driving the L-shaped cross beam frame beyond the safe position; and when the X-axis translation mechanism is working, it monitors the safe operation of the forklift within the specified stroke to prevent danger or damage.

[0049] On one side of the forklift 8 close to the fork end, an internal tooth type friction ratchet 83 that performs one-way friction rolling in the reverse Y-axis direction is installed, and the outer surface of the internal tooth type friction ratchet 83 that performs one-way friction rolling in the reverse Y-axis direction is a friction surface.

[0050] Adopting the above solution, when the forklift works to pick up goods, the internal tooth type friction ratchet rolls in one-way friction in the reverse Y-axis direction, so as not to affect the smooth insertion of the forklift under the goods. When the goods are picked up, under the action of the gravity of the goods, the friction between the goods and the forklift during hoisting can be increased, so that the goods are not easy to slide. When the goods are transferred to the designated position, the friction between the goods and the forklift is greatly reduced, and the forklift can be easily withdrawn under the drive of the traveling crane, thus realizing safer transfer of goods!

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

[0052] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel fork lifting device, characterized in that: It includes at least two fixed pulleys, a crossbeam frame, a rotating mechanism, an L-shaped beam frame, an X-axis translation mechanism, a Y-axis telescopic mechanism, a forklift fork, and a fork arm frame; The two fixed pulleys are fixedly installed on the upper surfaces of both ends of the crossbeam frame, and the lower part of the middle of the crossbeam frame is rotatably connected to the L-shaped beam frame; the rotating mechanism is arranged on the crossbeam frame, and the rotating mechanism is in transmission connection with the L-shaped beam frame, and the rotating mechanism drives the L-shaped beam frame to rotate; A pair of fork arm frames, namely a first fork arm frame and a second fork arm frame, are slidably arranged at the lower end of the L-shaped beam frame; an X-axis translation mechanism is fixedly installed on the L-shaped beam frame, and the X-axis translation mechanism is respectively in transmission connection with the first fork arm frame and the second fork arm frame, and the X-axis translation mechanism simultaneously drives the first fork arm frame and the second fork arm frame to move along the X-axis; The forklift fork is slidably arranged on the fork arm frame along the Y-axis, the Y-axis telescopic mechanism is fixedly arranged on the fork arm frame, the Y-axis telescopic mechanism is in transmission connection with the forklift fork, and the Y-axis telescopic mechanism drives the forklift fork to move along the Y-axis.

2. The novel fork lifting device according to claim 1, characterized in that: The rotating mechanism includes a rotating mechanism driver, a rotating mechanism gear, and a slewing bearing. The inner ring of the slewing bearing is fixedly connected to the crossbeam frame, the outer ring of the slewing bearing is fixedly connected to the L-shaped beam frame, the rotating mechanism driver is fixedly installed on the crossbeam frame, the rotating mechanism gear is fixedly installed at the power output end of the rotating mechanism, and the rotating mechanism gear meshes with the slewing bearing.

3. The novel fork lifting device according to claim 2, characterized in that: The rotating mechanism further includes a reducer. The reducer is fixedly installed on the crossbeam frame, the power output end of the rotating mechanism driver is fixedly connected to the power input end of the reducer, and the rotating mechanism gear is fixedly installed at the power output end of the reducer.

4. A novel forklift attachment device according to claim 1, characterized in that: A plurality of X-axis sliding rails are arranged inside the lower end of the L-shaped beam frame, and the L-shaped beam frame is slidably connected to the first fork arm frame and the second fork arm frame through the plurality of X-axis sliding rails.

5. A novel forklift attachment device according to claim 4, characterized in that: The X-axis translation mechanism includes an X-axis translation driver, a translation drive gear, a first rack and a second rack. The X-axis translation driver is fixedly installed on the L-shaped beam frame, the translation drive gear is fixedly installed at the output shaft end of the X-axis translation driver, the first rack and the second rack are parallel in the X-axis direction and face each other with their tooth surfaces, and are respectively fixedly connected to the first fork arm frame and the second fork arm frame, and the first rack and the second rack are simultaneously meshed with the translation drive gear.

6. A novel forklift attachment device according to claim 1, characterized in that: A plurality of Y-axis sliding rails are arranged above the fork arm frame, and the forklift fork is slidably connected to the fork arm frame through the plurality of Y-axis sliding rails.

7. A novel forklift attachment device according to claim 1, characterized in that: The Y-axis telescopic mechanism includes a Y-axis telescopic driver and at least 4 telescopic members. At least two telescopic members are fixedly installed on each of the first fork arm frame and the second fork arm frame. The output shaft heads of the telescopic members are respectively fixedly connected to the first forklift fork and the second forklift fork. The Y-axis telescopic mechanism drives the telescopic members to synchronously drive the first forklift fork and the second forklift fork to move along the Y-axis; the telescopic member adopts one of an electric push rod and a hydraulic rod, and the Y-axis telescopic driver adopts one of a power supply module and a hydraulic cylinder that cooperate with the telescopic member.

8. A novel forklift attachment device according to any one of claims 4 and 6, characterized in that: Each of the sliding rails includes a slider and a sliding rail strip, and the slider is slidably connected to the sliding rail strip.

9. A novel forklift attachment device according to claim 1, characterized in that: Limit sensors are fixedly installed on both the rotating mechanism and the X-axis translation mechanism.

10. A novel forklift attachment device according to claim 1, characterized in that: On one side of the forklift fork near the fork end, an internal-tooth friction ratchet that rolls in a reverse Y-axis direction with one-way friction is installed; the outer surface of the internal-tooth friction ratchet is a friction surface.

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