Self-unloading elevator

Abstract

The utility model relates to a self-unloading elevator which is used for vertically conveying goods and comprises a rack, a material frame capable of doing lifting motion in the vertical direction of the rack is arranged in the rack, a chain machine is installed on the inner bottom face of the material frame, and the chain machine is provided with three conveying chains arranged at intervals. An external chain conveyor is in butt joint with the chain machine so as to convey goods into or out of the conveying chain; the traction mechanism drives the material frame to do lifting motion, a balance block matched with the weight of goods lifted in the material frame is arranged on the inner side face close to the right side of the rack, and when the traction mechanism drives the material frame to do lifting motion, the traction mechanism synchronously drives the balance block to do lifting motion opposite to the motion direction of the material frame. The chain machine is arranged in the material frame, and the conveying chain on the chain machine is in butt joint with the external chain conveyor, so that goods are automatically loaded and unloaded, automatic control over goods loading and unloading is achieved, operation efficiency is improved, and labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a self-unloading hoist. Background Art

[0002] As an important material transmission equipment, elevators have been widely used in industrial production, warehousing and logistics and other fields.

[0003] Elevators generally use vertical transportation. Compared with horizontal transportation, they have the characteristics of high space utilization, long transportation distance, fast lifting speed, and high loading and unloading efficiency. Compared with other means of transportation, such as manual handling and conveyor belt transportation, elevators can realize centralized transportation and batch processing of goods, greatly reducing labor costs.

[0004] In the existing conventional elevator structure, the goods are placed on the lifting platform, and the transmission system drives the lifting platform to move up and down, so as to lift the goods from a low place to a high place or transport them from a high place to a low place. However, when loading and unloading goods, external forces such as cranes and cranes are required to help lift the goods onto the lifting platform or unload the goods from the lifting platform. This makes it impossible to implement automated control of the transportation operation, and the operation efficiency is also low, and the work intensity is high. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a self-unloading elevator to realize automatic loading and unloading of goods on the elevator lifting platform.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a self-unloading hoist for vertically conveying goods, comprising a frame, a material frame which can be lifted and lowered along the vertical direction of the frame, a chain machine installed on the bottom surface of the material frame, the chain machine having three transmission chains arranged at intervals, an external chain conveyor docking with the chain machine to convey goods into or out of the transmission chain;

[0007] It has a traction mechanism that drives the material frame to move up and down. A balance block that matches the weight of the goods lifted in the material frame is provided on the inner side surface near the right side of the frame. When the traction mechanism drives the material frame to move up and down, it synchronously drives the balance block to move up and down in the opposite direction of the material frame.

[0008] Specifically, the chain machine includes a machine base arranged on the bottom surface of the inner part of the material frame, the transmission chain is arranged on the machine base, and a reduction motor for driving the transmission chain to rotate is installed on the bottom surface of the machine base.

[0009] Furthermore, in order to prevent the goods from falling during transportation, a cross-connecting plate is installed on the machine base at the input end of the conveying chain, and a lifting cylinder is installed on the bottom of the cross-connecting plate. A baffle is fixed to the piston rod of the lifting cylinder, which rises to block the front side of the goods after the goods are delivered to the conveying chain.

[0010] Furthermore, three elastic blocks are provided at intervals on the rear side of the material frame to prevent the goods from colliding with the rear side of the material frame when moving on the conveyor chain.

[0011] Specifically, the traction mechanism includes a driving chain group installed at the bottom of the frame and a driven chain group installed at the top of the frame. The driving chain group has two groups of driving chains set at a distance from each other, one end of the driving chain is connected to the bottom of the material frame through a connecting block, and the other end of the driving chain is connected to the bottom of the balance block; the driven chain group has two groups of driven chains set at a distance from each other, one end of the driven chain is connected to the top of the material frame through a connecting shaft, and the other end of the driven chain is connected to the top of the balance block.

[0012] To ensure safety in use, an anti-fall mechanism is provided at the upper end of the frame to prevent the material frame from accidentally falling.

[0013] Furthermore, a detection mechanism for detecting chain breakage is provided at the connection between the driven chain and the material frame. The detection mechanism includes a compression spring, a proximity switch and a slotted nut. The upper end of the connecting shaft is connected to the driven chain, and the lower end of the connecting shaft passes through the side of the material frame. The compression spring is sleeved on the connecting shaft. An induction ring that fits the end of the compression spring is provided in the gap on the connecting shaft. The slotted nut is threadedly connected to the connecting shaft to compress the compression spring. The proximity switch is fixed on the bottom surface of the side of the material frame and close to the slotted nut. When the chain breaks, the proximity switch detects the induction ring under the action of the restoring force of the compression spring, and the signal controls the start of the anti-fall mechanism.

[0014] The bottom surface of the material frame is fixed with two safety pillars set at a distance to prevent the material frame from falling directly to the ground, so as to ensure the safety of maintenance personnel when performing maintenance on the bottom surface of the frame.

[0015] The beneficial effects of the present invention are as follows: the present invention arranges a chain machine in the material frame, utilizes the transmission chain on the chain machine to connect with the external chain conveyor, and performs automatic loading and unloading of goods, thereby realizing automatic control of cargo loading and unloading, improving operation efficiency, and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the traction mechanism structure of the utility model after the frame is removed.

[0019] Figure 3 It is a front structural schematic diagram of the chain machine described in the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of the chain machine described in the utility model when viewed from above.

[0021] Figure 5 It is a partial structural diagram of the upper half of the utility model.

[0022] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0023] In the figure: 1. Cargo, 2. Rack, 3. Material frame, 4. Chain conveyor, 4-1. Conveyor chain, 4-2. Machine base, 4-3. Reducer motor, 5. Balance block, 6. Cross plate, 7. Lifting cylinder, 8. Baffle, 9. Elastic block, 10. Driving chain group, 11. Driven chain group, 12. Driving chain, 13. Driven chain, 14. Connecting shaft, 15. Anti-fall mechanism, 16. Compression spring, 17. Proximity switch, 18. Slotted nut, 19. Induction ring, 20. Safety pillar. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0025] like Figure 1 The self-unloading elevator shown is used to vertically transport goods 1 from the ground to the third floor, including a frame 2 with a square cross-section. The bottom of the frame 2 is fixed to the ground, and a protective railing (not shown in the figure) is installed on the top surface of the frame 2.

[0026] A material frame 3 is provided inside the frame 2 and can be lifted and lowered in the vertical direction of the frame 2. A traction mechanism is also provided to drive the material frame 3 to lift and lower the material frame 3. A balance block 5 is provided on the inner side surface near the right side of the frame 2 to match the weight of the goods 1 lifted in the material frame 3.

[0027] like Figure 2As shown, the traction mechanism includes a set of active chain groups 10 installed at the bottom of the frame 2 and a set of driven chain groups 11 installed at the top of the frame 2. The active chain group 10 has two sets of active chains 12 set at a distance from each other on the left and right, and each set of active chains 12 has two active chains 12. The four active chains 12 are driven to move synchronously by a driving motor. One end of the four active chains 12 corresponds to the four corner ends of the material frame 3 and is fixed to the bottom of the material frame 3 through a connecting block. The other ends of the four active chains 12 are respectively connected to the bottom of the balance block 5 in pairs on the left and right; corresponding to the active chain group 10, the driven chain group 11 has two sets of driven chains 13 set at a distance from each other on the left and right, and each set of driven chains 13 includes two driven chains 13. One end of the four driven chains 13 corresponds to the four corner ends of the material frame 3 and is fixed to the top of the material frame 3 through a connecting shaft 14. The other ends of the four driven chains 13 are respectively connected to the top of the balance block 5 in pairs on the left and right.

[0028] When the traction mechanism drives the material frame 3 to move up and down through the active chain group 10 and the driven chain group 11 , the balancing block 5 is synchronously driven to move up and down in the opposite direction to the movement of the material frame 3 .

[0029] like Figure 3 、 Figure 4 As shown, a chain machine 4 is installed on the inner bottom surface of the material frame 3, and the chain machine 4 includes a machine base 4-2 arranged on the inner bottom surface of the material frame 3, and three spaced apart conveyor chains 4-1 are rotatably installed on the machine base 4-2. A reduction motor 4-3 that can drive the conveyor chain 4-1 to rotate in forward and reverse directions is installed on the bottom surface of the machine base 4-2.

[0030] When in use, the external chain conveyor installed on the ground or the third floor is docked with the input end of the chain machine 4, so that the lifted goods 1 are transferred from the chain conveyor to the conveying chain 4-1, or the lifted goods 1 are transferred from the conveying chain 4-1 to the chain conveyor.

[0031] A cross-connecting plate 6 is fixed on the machine base 4-2 between the input ends of two adjacent conveyor chains 4-1. A lifting cylinder 7 is installed on the bottom of each cross-connecting plate 6. A baffle 8 is fixed to the piston rod of the lifting cylinder 7. After the goods 1 are delivered to the conveyor chain 4-1, the lifting cylinder 7 pushes the baffle 8 to rise and block the front side of the goods 1 to prevent the goods 1 from slipping out of the conveyor chain 4-1 during the lifting process; at the same time, three elastic blocks 9 are horizontally spaced on the rear side of the material frame 3 to prevent the goods 1 from accidentally hitting the rear side of the material frame 3 when moving on the conveyor chain 4-1.

[0032] To ensure safety in use, the hoist is also provided with a safety protection mechanism, which includes the following parts:

[0033] like Figure 1As shown, first, a set of anti-falling mechanism 15 is provided at the upper end of the frame 2 to prevent the material frame 3 from accidentally falling when the driving chain 12 or the driven chain 13 breaks. (If the anti-falling mechanism 15 is a purchased part, it is best to write the product model)

[0034] Secondly, in order to ensure that the anti-fall mechanism 15 is activated in time, a detection mechanism for detecting chain breakage is provided at the connection between the driven chain 13 and the material frame 3, such as Figure 5 、 Figure 6 As shown, the detection mechanism includes a compression spring 16, a proximity switch 17 and a slotted nut 18. The upper end of the connecting shaft 14 is connected to the driven chain 13, and the lower end of the connecting shaft 14 passes through the side of the material frame 3. The compression spring 16 is sleeved on the connecting shaft 14. The connecting shaft 14 is gap-shrouded with an induction ring 19 that fits the end of the compression spring 16. The slotted nut 18 is threadedly connected to the connecting shaft 14 to compress the compression spring 16. The proximity switch 17 is fixed on the bottom surface of the side of the material frame 3 and close to the slotted nut 18. When the chain breaks, the proximity switch 17 is acted upon by the restoring force of the compression spring 16. After the induction ring 19 is detected, the signal controls the anti-fall mechanism 15 to start.

[0035] Finally, two safety pillars 20 are fixed to the bottom surface of the material frame 3 and are set apart from each other. If the maintenance personnel are performing maintenance at the bottom of the rack 2, they can prevent the material frame 3 from falling directly to the ground and causing personal accidents.

[0036] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-unloading elevator for vertically conveying cargo (1), comprising a frame (2), a material frame (3) provided within the frame (2) capable of being lifted and lowered in a vertical direction relative to the frame (2), and characterized by: A chain machine (4) is installed on the inner bottom surface of the material frame (3), and the chain machine (4) has three transmission chains (4-1) arranged at intervals. An external chain conveyor is connected to the chain machine (4) to transmit the goods (1) into or out of the transmission chain (4-1); The invention provides a traction mechanism for driving a material frame (3) to move up and down. A balance block (5) matching the weight of the goods (1) lifted in the material frame (3) is provided on the inner side surface near the right side of the frame (2). When the traction mechanism drives the material frame (3) to move up and down, the balance block (5) is synchronously driven to move up and down in the opposite direction of the movement of the material frame (3).

2. The self-unloading hoist according to claim 1, characterized in that: The chain machine (4) includes a machine base (4-2) arranged on the inner bottom surface of the material frame (3), the transmission chain (4-1) is arranged on the machine base (4-2), and a reduction motor (4-3) for driving the transmission chain (4-1) to rotate is installed on the bottom surface of the machine base (4-2).

3. The self-unloading hoist according to claim 2, characterized in that: A cross-connecting plate (6) is installed on the base (4-2) at the input end of the conveying chain (4-1), a lifting cylinder (7) is installed on the bottom surface of the cross-connecting plate (6), and a baffle (8) is fixedly connected to the piston rod of the lifting cylinder (7) and rises to block the front end side of the goods (1) after the goods (1) are delivered to the conveying chain (4-1).

4. The self-unloading hoist according to claim 1, wherein: The rear side of the material frame (3) is provided with three elastic blocks (9) at intervals to prevent the goods (1) from colliding with the rear side of the material frame (3) when moving on the conveying chain (4-1).

5. The self-unloading hoist according to claim 1, characterized in that: The traction mechanism comprises a driving chain group (10) installed at the bottom of the frame (2) and a driven chain group (11) installed at the top of the frame (2), wherein the driving chain group (10) comprises two groups of driving chains (12) arranged at a distance from each other, one end of the driving chain (12) is connected to the bottom of the material frame (3) through a connecting block, and the other end of the driving chain (12) is connected to the bottom of the balance block (5); and the driven chain group (11) comprises two groups of driven chains (13) arranged at a distance from each other, one end of the driven chain (13) is connected to the top of the material frame (3) through a connecting shaft (14), and the other end of the driven chain (13) is connected to the top of the balance block (5).

6. The self-unloading hoist according to claim 5, characterized in that: The upper end of the frame (2) is provided with an anti-falling mechanism (15) for preventing the material frame (3) from accidentally falling.

7. The self-unloading hoist according to claim 6, characterized in that: The driven chain (13) and the material frame (3) are connected at a connection point provided with a detection mechanism for detecting chain breakage, the detection mechanism comprising a compression spring (16), a proximity switch (17) and a slotted nut (18). The upper end of the connecting shaft (14) is connected to the driven chain (13), and the lower end of the connecting shaft (14) passes through the side of the material frame (3). The compression spring (16) is sleeved on the connecting shaft (14). The connecting shaft (14) is provided with an induction ring (19) that fits the end of the compression spring (16). The slotted nut (18) is threadedly connected to the connecting shaft (14) to compress the compression spring (16). The proximity switch (17) is fixed on the bottom surface of the side of the material frame (3) and is close to the slotted nut (18). When the chain breaks, the proximity switch (17) is affected by the restoring force of the compression spring (16). After the induction ring (19) is detected by the proximity switch (17), a signal is generated to control the anti-fall mechanism (15) to start.

8. The self-unloading hoist according to claim 1, characterized in that: Two safety pillars (20) arranged at a distance from each other are fixed to the bottom surface of the material frame (3) to prevent the material frame (3) from falling directly to the ground.

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