Chain breakage protection device for bucket elevator
By installing a chain break protection device with pawls and operating arms on the bucket lifter housing, the problem of easy breakage of the bucket lifter transmission chain is solved, the hopper and internal bracket are protected, and the safety and convenience of the conveying process are improved.
Patent Information
- Application Number
- CN202420561058.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-22
AI Technical Summary
When existing bucket lifters transport coal gangue with high viscosity, the bucket chain is easily broken, resulting in damage to the hopper and internal brackets, increasing the difficulty of repair, and lacking the chain break protection function.
A chain break protection device is designed, including installing a pawl and an operating arm on the housing. When the transmission chain falls, the movable roller snaps into the casing slot of the pawl to prevent the transmission chain from falling and achieve chain break protection.
Effectively prevent the transmission chain of the bucket lifter from breaking, protecting the hopper and internal bracket, reducing maintenance difficulties, and reducing friction by storing pawls when conveying lighter materials.
Smart Images
Figure CN222555735U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bucket elevators, in particular to a chain breaking protection device for bucket elevators. Background Art
[0002] In a coal preparation plant, a bucket elevator is the main conveying equipment, which is mainly used for the transportation and distribution of various types of coal with different moisture content and particle size below 100 mm in the production system of the coal preparation plant. For example, the prior art announcement number is CN218778168U, which discloses a bucket elevator, and the bucket elevator comprises: a driving wheel, a driven wheel and a transmission belt, the transmission belt is sleeved outside the driving wheel and the driven wheel, and is used to transmit materials; the driving wheel comprises an inner shaft and an outer wheel, the outer wheel is sleeved outside the inner shaft, and there is a gap between the inner shaft and the outer wheel; the bucket elevator also comprises: a power device, the power device is connected to the inner shaft to drive the inner shaft to rotate; a transmission member, the first end of the transmission member is movably connected to the inner shaft, and the second end abuts on the outer wheel.
[0003] During the use of bucket elevator, especially when transporting lumps of coal, gangue, and coal lumps and gangue with high viscosity, the bucket chain is subjected to relatively large force. In severe cases, the bucket chain chain plate may be broken. The bucket chain chain plate and bucket falling from a height may damage the internal bracket and other components of the bucket elevator, increasing the difficulty of subsequent maintenance. Based on this, the existing bucket elevator does not have a chain break protection function and needs further improvement. Utility Model Content
[0004] The utility model aims to provide a chain breaking protection device for a bucket elevator to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chain breaking protection device for a bucket elevator, the bucket elevator comprises a shell of a material conveying channel, a driving wheel is rotatably installed in the shell, a transmission sleeve on the surface of the driving wheel is provided with a transmission chain, a plurality of buckets are fixedly installed on the surface of the transmission chain, a mounting seat is fixedly installed on the surface of the shell, a supporting shaft is fixedly installed inside the mounting seat, a shaft sleeve is rotatably installed on the surface of the supporting shaft, a pawl and an operating arm are fixedly installed on the surface of the shaft sleeve, a connecting opening and a limiting notch are respectively provided on both sides of the mounting seat, the pawl has a connecting opening extending into the shell, the operating arm extends from the limiting notch to the outside of the mounting seat, and the blocking of the operating arm at the limiting notch causes the pawl to tilt upward and be flipped upward.
[0006] A movable roller is arranged in the transmission chain, and a ratchet has a slot formed at one end of the transmission chain. When the transmission chain falls, the movable roller can be inserted into the slot end of the ratchet. The movable roller is blocked by the ratchet, so that the disconnected transmission chain of the bucket elevator cannot continue to fall and move, thereby playing a role in protecting the bucket elevator from chain breakage.
[0007] In some embodiments, a mounting block is fixedly installed on the side of the mounting seat, a threaded hole is opened in the mounting block, and an adjusting bolt is threadedly inserted on the mounting block, and the end of the adjusting bolt can be pressed against the upper side of the operating arm, and a tension spring is arranged between the mounting block and the operating arm. Under the action of the tension spring, the operating arm tilts upward and presses against the end of the adjusting bolt, and the inclination angle of the pawl can be adjusted by screwing in or out the adjusting bolt.
[0008] In some embodiments, there are multiple mounting seats, and the multiple mounting seats are arranged in a straight line on the surface of the shell. A traction cable is connected in series between the operating arms in the multiple mounting seats. A telescopic cylinder is fixedly installed on the surface of the shell, and the bottom end of the traction cable is fixedly connected to the telescopic end of the telescopic cylinder. When transporting some lighter materials, it is convenient to retract the ratchet and reduce friction.
[0009] In some embodiments, a syringe is fixedly installed inside the mounting seat, a piston is slidably installed inside the syringe, a telescopic probe rod is fixedly installed on the end of the piston, a return spring is sleeved on the surface of the telescopic probe rod, the return spring pushes the telescopic probe rod outward, and a flip probe rod is fixedly installed on the surface of the sleeve.
[0010] A first one-way valve and a second one-way valve are fixedly installed on the surface of the syringe, and an oil nozzle is fixedly installed on the surface of the sleeve. The first one-way valve is connected to the oil nozzle through a first pipe, and the inlet of the second one-way valve is connected to the second pipe. When the sleeve rotates back and forth, the flip probe rod pushes the telescopic probe rod, driving the piston to move back and forth in the syringe, drawing lubricating oil from the second pipe and then pumping it into the oil nozzle of the sleeve, so as to facilitate the injection of lubricant into the sleeve through the syringe and reduce the wear of the support shaft and the sleeve. Beneficial Effects
[0011] The utility model provides a chain breaking protection device for a bucket elevator, which has the following beneficial effects:
[0012] 1. The chain-breaking protection device for bucket elevators is provided with a ratchet on the housing. When the transmission chain is running, the ratchet can swing around the supporting shaft. When the lifting section of the transmission chain is disconnected due to overload, the movable roller of the bucket elevator is blocked by the ratchet, so that the disconnected transmission chain of the bucket elevator cannot continue to fall and move, thereby playing the role of chain-breaking protection for the bucket elevator.
[0013] 2. The chain-breaking protection device for bucket elevators is provided with a plurality of mounting seats, each of which is provided with a ratchet and an operating arm, and the operating arms are connected in series through a traction cable. The traction cable is pulled by a telescopic cylinder to flip the ratchet and hide it in the mounting seat, and the ratchet is in a storage state. When conveying some lighter materials, the ratchet is retracted to reduce friction. In addition, an injection cylinder is provided in the mounting seat, and lubricant is injected into the shaft sleeve through the injection cylinder by pulling the traction cable, thereby simplifying the operation of lubricating it and improving its convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the shell's front section structure (partial);
[0015] Figure 2 It is a schematic diagram of the transmission chain connection structure (partial);
[0016] Figure 3 for Figure 1 The enlarged structural diagram at A in the middle;
[0017] Figure 4 This is a schematic diagram of the front section structure of the mounting base (I);
[0018] Figure 5 This is a schematic diagram of the front cross-section structure of the mounting base (II).
[0019] In the figure: 1 housing, 2 driving wheel, 3 transmission chain, 4 mounting seat, 5 supporting shaft, 6 bushing, 7 ratchet, 8 operating arm, 9 movable roller, 10 mounting block, 11 adjusting bolt, 12 traction cable, 13 telescopic cylinder, 14 injection cylinder, 15 telescopic probe rod, 16 return spring, 17 flip probe rod, 18 first one-way valve, 19 second one-way valve, 20 first pipeline, 21 second pipeline, 22 tension spring. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-5 The utility model provides a technical solution: a chain breaking protection device for a bucket elevator, the bucket elevator comprises a housing 1 of a material conveying channel, a driving wheel 2 is rotatably installed in the housing 1, a transmission chain 3 is provided on the surface of the driving wheel 2, a plurality of buckets are fixedly installed on the surface of the transmission chain 3, and a movable roller 9 is provided in the transmission chain 3, such as Figure 2 shown.
[0022] A mounting seat 4 is fixedly installed on the surface of the shell 1, a supporting shaft 5 is fixedly installed inside the mounting seat 4, a shaft sleeve 6 is rotatably installed on the surface of the support shaft 5, a pawl 7 and an operating arm 8 are fixedly installed on the surface of the shaft sleeve 6, and a connecting opening and a limiting groove are respectively opened on both sides of the mounting seat 4. The pawl 7 has a connecting opening extending into the shell 1, and the operating arm 8 extends from the limiting groove to the outside of the mounting seat 4. The blocking of the operating arm 8 at the limiting groove makes the pawl 7 tilt upward and can be flipped upward.
[0023] A mounting block 10 is fixedly mounted on the side of the mounting seat 4. A threaded hole is opened in the mounting block 10, and an adjusting bolt 11 is threadedly inserted on the mounting block 10. The end of the adjusting bolt 11 can be pressed against the upper side of the operating arm 8. The inclination angle of the pawl 7 can be adjusted by screwing in or out the adjusting bolt 11.
[0024] A tension spring 22 is provided between the mounting block 10 and the operating arm 8. Under the action of the tension spring 22, the operating arm 8 tilts upward and presses against the end of the adjusting bolt 11, so that the pawl 7 maintains a fixed flip angle.
[0025] like Figure 4 As described, a section of the transmission chain 3 that lifts the material moves upward, and the pawl 7 flips clockwise. Since the pawl 7 has a slot facing one end of the transmission chain 3, when the section of the transmission chain 3 that lifts the material is overloaded and breaks and falls, the movable roller 9 can be stuck in the slot end of the pawl 7 to prevent the transmission chain 3 from falling at the break.
[0026] The chain breaking protection device for bucket elevator is provided with a ratchet 7 on a housing 1. When the transmission chain 3 is running, the ratchet 7 can swing around the supporting shaft 5. After the lifting section of the transmission chain 3 is disconnected due to overload, the movable roller 9 of the bucket elevator cannot fall and move due to the blocking of the ratchet 7, thereby playing the role of chain breaking protection of the bucket elevator.
[0027] In this embodiment, since the transmission chain 3 is in a cyclic operation and the disconnection point is uncertain, a plurality of mounting seats 4 are provided, and the plurality of mounting seats 4 are arranged in a straight line on the surface of the shell 1, thereby increasing the number of pawls 7 and improving their reliability. In addition, a traction cable 12 is connected in series between the operating arms 8 in the plurality of mounting seats 4, and a telescopic cylinder 13 is fixedly installed on the surface of the shell 1, and the bottom end of the traction cable 12 is fixedly connected to the telescopic end of the telescopic cylinder 13.
[0028] By setting a plurality of mounting seats 4, each mounting seat 4 is provided with a ratchet 7 and an operating arm 8, and the operating arms 8 are connected in series through a traction cable 12, and the traction cable 12 is pulled by the telescopic cylinder 13, so that the ratchet 7 is turned over and hidden in the mounting seat 4, and is in a storage state, such as Figure 4 As shown, when conveying some lighter materials, the ratchet 7 is retracted to reduce friction.
[0029] like Figure 5 As shown, a syringe 14 is fixedly installed inside the mounting seat 4, a piston is slidably installed inside the syringe 14, a telescopic probe 15 is fixedly installed on the end of the piston, a return spring 16 is sleeved on the surface of the telescopic probe 15, the return spring 16 presses the telescopic probe 15 outward, and a flip probe 17 is fixedly installed on the surface of the sleeve 6.
[0030] A first one-way valve 18 and a second one-way valve 19 are fixedly installed on the surface of the injection cylinder 14, and an oil nozzle is fixedly installed on the surface of the sleeve 6. The first one-way valve 18 is connected to the oil nozzle through a first pipe 20, and the inlet of the second one-way valve 19 is connected to a second pipe 21. When the sleeve 6 rotates back and forth, the flip probe rod 17 pushes the telescopic probe rod 15, driving the piston to move back and forth in the injection cylinder 14, forming a negative pressure to draw the lubricating oil from the second pipe 21, and then the lubricating oil is pumped into the oil nozzle of the sleeve 6 by extrusion.
[0031] It should be noted that under normal circumstances, the movable roller 9 moves up to push the pawl 7 to flip upward. At this time, the flip probe rod 17 will not push the telescopic probe rod 15. When the operating arm 8 is pulled down to the lowermost side, the flip probe rod 17 will push the telescopic probe rod 15. An injection cylinder 14 is arranged in the mounting seat 4. By pulling the traction cable 12, the injection cylinder 14 is used to inject lubricant into the sleeve 6. Due to the large number of mounting seats 4, the operation of lubrication is simplified, and the convenience of use is improved.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A chain break protection device for a bucket elevator, the bucket elevator comprising a housing (1) for a material conveying channel, a driving wheel (2) rotatably mounted in the housing (1), a transmission chain (3) being mounted on the surface of the driving wheel (2), and a plurality of buckets being fixedly mounted on the surface of the transmission chain (3), characterized in that: A mounting seat (4) is fixedly mounted on the surface of the housing (1), a support shaft (5) is fixedly mounted inside the mounting seat (4), a shaft sleeve (6) is rotatably mounted on the surface of the support shaft (5), a pawl (7) and an operating arm (8) are fixedly mounted on the surface of the shaft sleeve (6), a connecting opening and a limiting notch are respectively provided on both sides of the mounting seat (4), the pawl (7) extends from the connecting opening into the housing (1), the operating arm (8) extends from the limiting notch to the outside of the mounting seat (4), and the blocking of the operating arm (8) by the limiting notch causes the pawl (7) to tilt upward and be able to flip upward; A movable roller (9) is arranged in the transmission chain (3), and a ratchet (7) is provided with a slot toward one end of the transmission chain (3). When the transmission chain (3) falls, the movable roller (9) can be inserted into the slot end of the ratchet (7).
2. A chain breaking protection device for a bucket elevator according to claim 1, characterized in that: A mounting block (10) is fixedly mounted on the side of the mounting seat (4), a threaded hole is provided in the mounting block (10), and an adjusting bolt (11) is threadedly inserted into the mounting block (10), and the end of the adjusting bolt (11) can be pressed against the upper side of the operating arm (8).
3. A chain breaking protection device for bucket elevator according to claim 2, characterized in that: A tension spring (22) is provided between the mounting block (10) and the operating arm (8); under the action of the tension spring (22), the operating arm (8) tilts upward and presses against the end of the adjusting bolt (11).
4. A chain breaking protection device for a bucket elevator according to any one of claims 1 to 3, characterized in that: There are a plurality of mounting seats (4), and the plurality of mounting seats (4) are arranged in a straight line on the surface of the housing (1), and a traction cable (12) is connected in series between the operating arms (8) in the plurality of mounting seats (4).
5. A chain breaking protection device for bucket elevator according to claim 4, characterized in that: A telescopic cylinder (13) is fixedly mounted on the surface of the housing (1), and the bottom end of the traction cable (12) is fixedly connected to the telescopic end of the telescopic cylinder (13).
6. A chain breaking protection device for bucket elevator according to claim 5, characterized in that: A syringe (14) is fixedly mounted inside the mounting seat (4), a piston is slidably mounted inside the syringe (14), a telescopic probe (15) is fixedly mounted on the end of the piston, a return spring (16) is sleeved on the surface of the telescopic probe (15), the return spring (16) presses the telescopic probe (15) outwardly, and a flip probe (17) is fixedly mounted on the surface of the shaft sleeve (6).
7. A chain breaking protection device for bucket elevator according to claim 6, characterized in that: A first one-way valve (18) and a second one-way valve (19) are fixedly mounted on the surface of the injection cylinder (14), an oil nozzle is fixedly mounted on the surface of the shaft sleeve (6), and the first one-way valve (18) is connected to the oil nozzle via a first pipe (20).
8. A chain breaking protection device for bucket elevator according to claim 7, characterized in that: The inlet of the second one-way valve (19) is connected to a second pipeline (21). When the shaft sleeve (6) rotates back and forth, the tilting probe rod (17) pushes the telescopic probe rod (15), driving the piston to move back and forth in the injection cylinder (14), drawing lubricating oil from the second pipeline (21) and then pumping it into the oil nozzle of the shaft sleeve (6).