Material platform lifting device

Abstract

The utility model relates to a material platform lifting device which comprises a rectangular frame, a trolley and a lifting unit, a trolley inlet is formed in the lower portion of the rectangular frame, a trolley outlet is formed in the upper portion of the rectangular frame, a fixed grid is annularly arranged on the peripheral side of the rectangular frame, and a sliding grid is directionally installed at the trolley inlet in a sliding mode. A vertical linkage unit is installed on the rectangular frame, the sliding grid is connected with the vertical linkage unit, and a limiting trigger piece is installed between the trolley and the vertical linkage unit. When the lifting unit drives the trolley to gradually descend to the trolley inlet, the sliding grid is promoted to gradually lift up under the action of the limiting triggering piece; when the lifting unit drives the trolley to be gradually away from the trolley inlet to be lifted, the sliding grid gradually moves downwards due to the gravity effect and shields the trolley inlet, and at the moment, the fixed grid and the sliding grid are combined to form a protection net cover. The safety and stability of the material platform lifting device are achieved, and then the effect of workshop safety production is improved.

Description

Technical Field

[0001] This application relates to the technical field of material transportation, and particularly to a material platform lifting device. Background Art

[0002] In workshop production, material transportation platforms are widely used in short-distance transportation angles. Generally, conveying equipment with traction parts is used to transport materials. The conveying equipment is mostly horizontal conveyors, bucket elevators, suspension conveyors, aerial ropeways, etc. Among them, the horizontal conveyor is a machine for transporting materials in a continuous manner. Due to its continuous conveying characteristics, it can cooperate with the requirements of the technological processes in the production processes of various industrial enterprises to form a rhythmic flow operation transportation line. Therefore, the horizontal conveyor is widely used in continuous conveying operations in workshops.

[0003] The existing horizontal conveyors generally adopt the operation mode of trolley operation. In the production environment with relatively many types of machines and relatively large daily output in metal parts production workshops, workers need to continuously place the trolleys filled with materials at designated positions, and vertically lift the trailers through a bucket elevator and then transfer them to the horizontal conveyor on the material platform. The horizontal conveyor on the material platform controls the trolleys to discharge materials at fixed points and in fixed quantities. However, during the operation, unloading and loading processes of the bucket elevator, there are unexpected situations such as causing the trolleys to vibrate, slip or accidentally turn over, posing a potential threat to safety production in the workshop. Utility Model Content

[0004] This application provides a material platform lifting device, which has the safety and stability of the material platform lifting device, and thus improves the effect of safety production in the workshop.

[0005] The material platform lifting device provided by this application adopts the following technical solutions:

[0006] A material platform lifting device includes a rectangular frame, a trolley, and a lifting unit installed on the rectangular frame for lifting and lowering the trolley. An inlet is provided below the rectangular frame, and an outlet is provided above it. A fixed grid is annularly arranged around the rectangular frame. A sliding grid is installed at the inlet in a directionally sliding manner along the lifting direction of the lifting unit. A vertical linkage unit is installed on the rectangular frame, and the sliding grid is connected to the vertical linkage unit. A limit trigger is installed between the trolley and the vertical linkage unit; when the lifting unit drives the trolley to gradually descend to the inlet, under the action of the limit trigger, the sliding grid is gradually lifted; when the lifting unit drives the trolley to gradually move away from the inlet for lifting, the sliding grid gradually moves down due to gravity and blocks the inlet. At this time, the fixed grid and the sliding grid are combined to form a protective mesh cover.

[0007] Preferably, the vertical linkage unit includes a gear set rotatably installed on a rectangular frame and a chain meshed and drivingly connected to the gear set; one end of the limit trigger is installed on the chain and the other end is installed on the lifting unit.

[0008] Preferably, the limit trigger includes an upper pressure plate fixedly installed on the lifting unit and a lower pressure plate fixedly installed on the chain, and the upper pressure plate acts on the lower pressure plate when the vehicle inlet is opened.

[0009] Preferably, the lifting unit includes a motor drive assembly installed on the rectangular frame, a lifting seat arranged inside the rectangular frame for placing the trolley, and a lifting belt connected between the output shaft of the motor drive assembly and the lifting seat. The motor drive assembly controls the operation of the lifting belt to drive the lifting seat to lift and lower within the rectangular frame.

[0010] Preferably, parallel guide rails are fixedly installed on both sides of the rectangular frame, and rollers are rotatably installed on both sides of the lifting seat. The rollers on both sides are respectively arranged to roll within the parallel guide rails on both sides.

[0011] Preferably, a guide rail is fixedly installed on the rectangular frame, and a plurality of bearings are rotatably installed on the guide rail. The bearings are located on one side of the vehicle outlet.

[0012] Preferably, trolley induction switches for sensing the trolley are installed at both the vehicle inlet and the vehicle outlet.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] By pushing the trolley loaded with materials to the lifting unit, when the lifting unit drives the trolley to gradually move away from the vehicle inlet for lifting, the sliding grid moves downward under the action of the vertical linkage unit and blocks the vehicle inlet. At this time, the fixed grid and the sliding grid are combined to form a protective mesh cover. The lifting unit safely transports the trolley to the vehicle outlet, improving the safety and stability of the trolley within the rectangular frame during lifting, and thus improving the effect of safe production in the workshop; and when the lifting unit drives the trolley to descend and gradually descends to the vehicle inlet, the limit trigger causes the sliding grid to gradually lift upward. Finally, the sliding grid lifts up to open the vehicle inlet for the purpose of trolley unloading and reloading of the trolley loaded with materials.

[0015] By fixedly installing parallel guide rails on both sides of the rectangular frame and rotatably installing rollers on both sides of the lifting seat, and the rollers on both sides are respectively arranged to roll within the parallel guide rails on both sides, the stability of the lifting seat within the rectangular frame during lifting is improved.

[0016] By fixedly installing guide rails on a rectangular frame and rotatably installing a plurality of bearings on the guide rails, with the bearings located on one side of the vehicle exit, when the lifting seat drives the trolley to lift, when the outer wall of the trolley contacts the bearings, it is a rolling friction, improving the stability of the trolley when lifting within the rectangular frame;

[0017] In the natural state, by making the weight of the lifting seat greater than the weight of the sliding grid, and when the upper pressure plate acts on the lower pressure plate, the sliding grid is lifted to make the vehicle inlet in an open state. When the lifting seat is lifted, the lower pressure plate loses the acting force of the upper pressure plate. At this time, the sliding grid moves downward due to gravity and blocks the vehicle inlet;

[0018] By installing trolley induction switches for sensing the trolley at both the vehicle inlet and the vehicle exit, and the trolley induction switches are electrically connected to the lifting unit, improving the precise control when the lifting unit lifts the trolley. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the material platform lifting device;

[0020] Figure 2 is a schematic structural diagram of the material platform lifting device removing the fixed grid;

[0021] Figure 3 is a schematic partial structural diagram of the material platform lifting device;

[0022] Figure 4 is Figure 3 an enlarged view of part A in;

[0023] Figure 5 is the state diagram when the lifting seat and the trolley are assembled.

[0024] Description of the Reference Numerals: 1, rectangular frame; 11, vehicle inlet; 12, vehicle exit; 2, trolley; 3, lifting unit; 31, motor drive assembly; 32, lifting seat; 33, parallel guide rail; 34, roller; 35, guide rail; 36, bearing; 4, fixed grid; 5, sliding grid; 6, vertical linkage unit; 61, gear set; 62, chain; 7, limit trigger; 71, lower pressure plate; 72, upper pressure plate; 8, trolley induction switch. Detailed Description of the Embodiment

[0025] The following further describes the present application in detail with reference to the drawings.

[0026] The embodiment of the present application discloses a material platform lifting device.

[0027] Refer to Figure 1 、 Figure 2, the material platform lifting device includes a rectangular frame 1, a trolley 2 for loading materials, and a lifting unit 3 installed on the rectangular frame 1 for lifting the trolley 2. An inlet 11 for the trolley 2 to enter and exit is provided below the rectangular frame 1, and an outlet 12 for the trolley 2 to enter and exit is provided above it.

[0028] Refer to Figures 1 to 3 , wherein, the lifting unit 3 includes a motor drive assembly 31 installed on the rectangular frame 1, a lifting seat 32 arranged inside the rectangular frame 1 for placing the trolley 2, and a lifting belt connected between the output shaft of the motor drive assembly 31 and the lifting seat 32; the lifting belt can be a gear chain 62 structure, or a winch structure or a belt structure. The outer wall of the lifting seat 32 is fixedly installed on the lifting belt, and the motor drive assembly 31 is used to control the operation of the lifting belt, thereby driving the lifting seat 32 to lift inside the rectangular frame 1.

[0029] To improve the stability of the lifting seat 32 when lifting inside the rectangular frame 1, parallel guide rails 33 are fixedly installed on both sides of the rectangular frame 1, and rollers 34 are rotatably installed on both sides of the lifting seat 32. The two rollers 34 are respectively arranged to roll inside the two parallel guide rails 33.

[0030] Furthermore, a guide rail 35 is fixedly installed on the rectangular frame 1, and a plurality of bearings 36 are rotatably installed on the guide rail 35. The bearings 36 are located on one side of the outlet 12; when the lifting seat 32 drives the trolley 2 to lift, when the outer wall of the trolley 2 contacts the bearings 36, it is rolling friction, which improves the stability of the trolley 2 when lifting inside the rectangular frame 1.

[0031] Combined with Figures 2 to 5 , a fixed grid 4 is provided around the circumference of the rectangular frame 1, and a sliding grid 5 is installed at the inlet 11 to slide directionally along the lifting direction of the lifting unit 3. The fixed grid 4 and the sliding grid 5 are combined to form a protective net cover; at the same time, a vertical linkage unit 6 is installed on the rectangular frame 1, the sliding grid 5 is connected to the vertical linkage unit 6, and a limit trigger 7 is installed between the trolley 2 and the vertical linkage unit 6; when the lifting unit 3 drives the trolley 2 to gradually descend to the inlet 11, under the action of the limit trigger 7, the sliding grid 5 is gradually lifted; when the lifting unit 3 drives the trolley 2 to gradually move away from the inlet 11 for lifting, the sliding grid 5 gradually moves down due to gravity and blocks the inlet 11. At this time, the fixed grid 4 and the sliding grid 5 are combined to form the protective net cover.

[0032] The vertical linkage unit 6 includes a gear set 61 rotatably mounted on the rectangular frame 1 and a chain 62 meshed and drivingly connected to the gear set 61; the limit trigger 7 includes a lower pressing plate 71 fixedly mounted at one end on the chain 62 and an upper pressing plate 72 fixedly mounted at one end on the lifting seat 32 in the lifting unit 3; in the natural state, the weight of the lifting seat 32 is greater than the weight of the sliding grid 5, and when the upper pressing plate 72 acts on the lower pressing plate 71, the sliding grid 5 is lifted to open the vehicle inlet 11. When the lifting seat 32 is lifted, the lower pressing plate 71 loses the acting force of the upper pressing plate 72, and at this time, the sliding grid 5 moves downward due to gravity and blocks the vehicle inlet 11.

[0033] To improve the accuracy of the lifting unit when lifting the hopper car 2, hopper car induction switches 8 for sensing the hopper car 2 are installed at both the vehicle inlet 11 and the vehicle outlet 12, and the hopper car induction switches 8 are electrically connected to the lifting unit 3.

[0034] The implementation principle is as follows: In the initial state, the lifting seat 32 is located at the vehicle inlet 11 at the bottom of the rectangular frame 1, and the sliding grid 5 is lifted to open the vehicle inlet 11; after pushing the hopper car 2 loaded with materials onto the lifting seat 32, the driving component in the lifting unit 3 controls the lifting belt to operate, thereby driving the lifting seat 32 to rise within the rectangular frame 1. When the lifting unit 3 drives the hopper car 2 to gradually move away from the vehicle inlet 11 for lifting, the sliding grid 5 gradually moves downward due to gravity and blocks the vehicle inlet 11. When the lower pressing plate 71 in the vertical linkage unit 6 completely loses the acting force of the upper pressing plate 72, the sliding grid 5 moves downward due to gravity and blocks the vehicle inlet 11. At this time, the fixed grid 4 and the sliding grid 5 are combined to form a protective net cover, and the lifting unit 3 safely transports the hopper car 2 to the vehicle outlet 12, improving the safety and stability of the hopper car 2 in the rectangular frame 1 during lifting, and thus improving the effect of safe production in the workshop; when the lifting unit 3 drives the hopper car 2 to descend and gradually descends to the vehicle inlet 11, the upper pressing plate 72 in the limit trigger 7 acts on the lower pressing plate 71, prompting the sliding grid 5 to gradually lift. Finally, the sliding grid 5 is lifted to open the vehicle inlet 11 for the purpose of unloading the hopper car 2 and reloading the hopper car 2 loaded with materials.

[0035] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A material platform lifting device, comprising a rectangular frame (1), a bucket car (2), and a lifting unit (3) mounted on the rectangular frame (1) for lifting the bucket car (2), wherein a vehicle inlet (11) is provided below the rectangular frame (1), and a vehicle outlet (12) is provided above the rectangular frame, and characterized in that: A fixed mesh grille (4) is provided around the rectangular frame (1); a sliding mesh grille (5) is installed at the vehicle entrance (11) in a directionally sliding manner along the lifting direction of the lifting unit (3); a vertical linkage unit (6) is installed on the rectangular frame (1); the sliding mesh grille (5) is connected to the vertical linkage unit (6); a limit triggering member (7) is installed between the bucket car (2) and the vertical linkage unit (6); when the lifting unit (3) drives the bucket car (2) to gradually descend to the vehicle entrance (11), the sliding mesh grille (5) is gradually lifted up under the action of the limit triggering member (7); when the lifting unit (3) drives the bucket car (2) to gradually move away from the vehicle entrance (11) for lifting, the sliding mesh grille (5) gradually moves downward due to gravity and blocks the vehicle entrance (11), and at this time, the fixed mesh grille (4) and the sliding mesh grille (5) are combined to form a protective mesh cover.

2. The material platform lifting device according to claim 1, characterized in that: The vertical linkage unit (6) comprises a gear set (61) rotatably mounted on the rectangular frame (1) and a chain (62) meshingly connected to the gear set (61); one end of the limit trigger member (7) is mounted on the chain (62) and the other end is mounted on the lifting unit (3).

3. The material platform lifting device according to claim 2, characterized in that: The limit trigger component (7) comprises an upper pressure plate (72) fixedly mounted on the lifting unit (3) and a lower pressure plate (71) fixedly mounted on the chain (62); when the vehicle entrance (11) is opened, the upper pressure plate (72) acts on the lower pressure plate (71).

4. The material platform lifting device according to claim 1, characterized in that: The lifting unit (3) comprises a motor drive assembly (31) mounted on a rectangular frame (1), a lifting seat (32) arranged inside the rectangular frame (1) for placing the bucket car (2), and a lifting belt connected between an output shaft of the motor drive assembly (31) and the lifting seat (32); the motor drive assembly (31) controls the operation of the lifting belt and thereby drives the lifting seat (32) to be lifted and lowered inside the rectangular frame (1).

5. The material platform lifting device according to claim 4, characterized in that: Parallel guide rails (33) are fixedly mounted on both sides of the rectangular frame (1), and rollers (34) are rotatably mounted on both sides of the lifting seat (32), and the rollers (34) on both sides are respectively arranged in a rolling manner in the parallel guide rails (33) on both sides.

6. The material platform lifting device according to claim 4, characterized in that: A guide rail (35) is fixedly mounted on the rectangular frame (1), and a plurality of bearings (36) are rotatably mounted on the guide rail (35), wherein the bearings (36) are located on one side of the vehicle exit (12).

7. The material platform lifting device according to claim 1, characterized in that: A bucket truck sensing switch (8) for sensing the bucket truck (2) is installed at the vehicle entrance (11) and the vehicle exit (12).

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