An access window for a hoist

Abstract

The utility model belongs to material conveying equipment technical field provides a kind of overhaul window for elevator, and elevator includes machine body and baffle cover, opening is opened on machine body side wall, chain drive assembly is connected on machine body, transmission chain is connected with baffle cover, transmission chain is made of several chain links, and chain link includes pin shaft, pin shaft both ends are equipped with inner link plate, outer link plate is equipped on the outside of inner link plate, outer link plate is connected by reinforcing plate between, the end of inner link plate has through-hole, through-hole penetrates outer link plate end, and the end of pin shaft passes through through-hole.The utility model is provided chain drive assembly drive baffle cover moves up and down, realizes the automatic opening and closing overhaul window, solves the problem of low work efficiency of switch overhaul window that part of elevator uses bolt nut assembly to connect machine body and baffle cover;Outer link plate is connected by reinforcing plate between, improve the strength of outer link plate, prolong the service life of transmission chain, to solve the short service life of transmission chain used on the existing elevator.

Description

Technical Field

[0001] This utility model belongs to the technical field of material conveying equipment, and in particular relates to a maintenance window for a hoist. Background Technology

[0002] Bucket elevators are continuous conveying machines that vertically lift materials using a series of buckets uniformly fixed to an endless traction component. They are suitable for conveying powdery, granular, and small-lump materials with little or no abrasiveness, such as coal, cement, stones, sand, and clay. They offer significant advantages including large conveying capacity, high lifting height, stable and reliable operation, and long service life. When using a bucket elevator to convey materials, continuous friction between the elevator's internal components and the material causes internal wear, especially when conveying sand and gravel, where wear is more severe. Therefore, inspection windows are usually provided on the elevator body to facilitate easy monitoring of internal wear.

[0003] The inspection window of a bucket elevator is usually located on the side wall of the machine body, and a cover is installed at the inspection window. In some existing bucket elevators, the cover is connected to the bucket elevator by multiple sets of bolt and nut assemblies. When it is necessary to inspect the inner cavity, all bolts are loosened, the cover is removed from the elevator, and after the inner cavity is inspected, the cover is placed back at the inspection window and the bolts are tightened to fix the cover to the machine body. During the operation of a bucket elevator, it is generally necessary to inspect the wear condition inside the machine body multiple times. Each inspection requires loosening all bolts and nuts, removing the cover from the machine body, and then tightening all bolts and nuts to fix the cover back on. This operation is cumbersome, time-consuming, and labor-intensive. Some bucket elevators connect the cover and the machine body through automated transmission components, such as chain drive components, gear drive components, and pulley drive components, thereby realizing the automated opening and closing of the inspection window. However, the chain drive components used in existing bucket elevators have relatively low chain strength, making them prone to deformation after being impacted by splashed materials inside the machine. They also experience significant wear after prolonged use and are susceptible to rust after being exposed to environmental corrosion. All of these factors can potentially cause the transmission chain to break, thus complicating the automated opening and closing of the inspection window. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems existing in the prior art and to provide a maintenance window for a hoist.

[0005] The present invention adopts the following technical solution:

[0006] The hoist includes a body and a cover. The body has an opening, and vertical strip plates are arranged on both sides of the opening. The two sides of the cover are slidably connected to the strip plates. A servo motor is located at one end of each strip plate, and a drive gear is mounted on the main shaft of the servo motor. A driven gear is located at the other end of each strip plate. A transmission chain is connected to the drive gear and the driven gear. The transmission chain consists of several links connected end-to-end. Each link is also connected to the cover. Each link includes a pin, and both ends of the pin have opposing inner chain plates. Opposing outer chain plates are located on the outer sides of the inner chain plates. The inner and outer chain plates are arranged in an array, and the opposing outer chain plates are connected by reinforcing plates. The end of each inner chain plate has a through hole that penetrates the end of the outer chain plate. The end of the pin passes through the through hole.

[0007] Furthermore, the corresponding side of the strip plate has a strip groove parallel to its length direction, and several rollers are connected at intervals on both sides of the cover, the rollers being slidably connected in the strip groove.

[0008] Furthermore, several mounting plates are fixed at intervals on the side of the cover, a snap-fit ​​plate is fixed on the roller, a groove is opened on the side of the mounting plate, and a number of ball columns are provided in the groove. A second groove is opened on the side of the snap-fit ​​plate, and a sleeve with corresponding ball columns and snap-fit ​​is provided in the second groove.

[0009] Furthermore, the edge of the mounting plate is flipped to one side to form a flange, and the edge of the snap-fit ​​plate has an annular groove for inserting the flange at a position corresponding to the flange. Several snap-fit ​​heads are connected in the annular groove, and the end of the snap-fit ​​head is elliptical. A conical groove is formed on the flange that corresponds to and engages with the snap-fit ​​heads.

[0010] Furthermore, a flexible limiting ring is embedded at the opening of the conical groove.

[0011] Furthermore, the two sides of the reinforcing plate are bent to form a bent plate, which is inserted into the gap between the outer chain plate and the inner chain plate and is fixedly connected to the outer chain plate. The reinforcing plate has an oil storage cavity inside, and the bent plate has an oil outlet channel communicating with the oil storage cavity.

[0012] Furthermore, a rectangular groove is provided around the periphery of the opening, and a rectangular sealing strip is inserted into the rectangular groove. An insertion groove corresponding to the rectangular groove and cooperating with the sealing strip is opened on the inner side of the cover.

[0013] Furthermore, the upper part of the sealing strip has a U-shaped cavity extending through its length, the middle part of the sealing strip has a rectangular cavity extending through its length, and the lower part of the sealing strip has a U-shaped groove extending through its length. An elastic support piece is fitted inside the U-shaped groove, and the edge of the rectangular groove extends inward to form a blocking edge that blocks the elastic support piece.

[0014] Furthermore, the elastic support sheet is triangular in shape and made of elastic steel sheet.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this utility model, the hoist and the cover are connected by a chain drive assembly, thereby realizing the automated movement of the cover, that is, the automated opening and closing of the inspection window. Compared with the method of connecting the cover and the machine body by a bolt and nut assembly, the operation steps are simpler and the work efficiency is higher.

[0017] 2. In this utility model, the opposing outer chain plates on the transmission chain are connected by reinforcing plates, which improves the structural strength of the outer chain plates, reduces the possibility of deformation of the outer chain plates under external forces, and helps to extend the service life of the chain.

[0018] 3. In this utility model, the reinforcing plate on the transmission chain is provided with an oil storage cavity. The bent plates on both sides of the reinforcing plate are inserted into the gap between the outer chain plate and the inner chain plate. Therefore, the lubricating oil stored in the oil storage cavity can flow to the pin through the oil outlet channel on the bent plate to lubricate the pin and avoid excessive wear caused by the pin rotating in the through hole for a long time. It also helps to extend the service life of the chain.

[0019] 4. This utility model features a sealing strip around the opening of the machine body. The sealing strip is inserted into the groove on the cover and the machine body. During the operation of the hoist, the sealing strip plays a sealing role, which can effectively prevent dust generated inside the machine body from escaping into the air and polluting the working environment. By pressing the elastic support piece inside the sealing strip, the lower part of the sealing strip deforms, allowing the sealing strip to be easily inserted into the rectangular groove on the machine body or removed from the machine body, thus realizing convenient replacement of the sealing strip.

[0020] 5. In this utility model, the snap-fit ​​plate on the roller and the mounting plate on the cover are connected by a ball-and-column sleeve snap-fit ​​structure, as well as a snap-fit ​​head and a tapered groove snap-fit ​​structure, which realizes the convenient assembly of the roller and the cover. Moreover, the operator can remove the roller from the cover by simply pulling it manually, thus realizing the convenient disassembly of the roller. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the hoist provided by this utility model.

[0022] Figure 2This is the front view of the hoist provided by this utility model.

[0023] Figure 3 This is an enlarged view of part of the structure of the hoist provided by this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of a transmission chain.

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the reinforcing plate.

[0026] Figure 6 It is a magnified view of the body, cover, and rollers.

[0027] Figure 7 This is a cross-sectional view of the mounting plate and the snap-fit ​​plate.

[0028] Figure 8 yes Figure 7 Enlarged structural diagram at point A in the middle.

[0029] Figure 9 yes Figure 7 Enlarged structural diagram at point B.

[0030] Figure 10 It is a sectional view of the cover plate, body, and sealing strip. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0032] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0033] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.

[0034] Combination Figure 1-5As shown, the hoist includes a body 1 and a cover 2. The body 1 has an opening 101, which can be considered an inspection window. Vertical strip plates 3 are arranged on both sides of the opening. On the corresponding sides of the strip plates 3, there are strip grooves 301 parallel to their length direction. Several rollers 4 are spaced apart on both sides of the cover 2, and the rollers 4 are slidably connected within the strip grooves 301. One end of the strip plate 3 has a servo motor (not shown in the attached diagram), and a drive gear 6 is mounted on the main shaft of the servo motor. The other end of the strip plate 3 has a driven gear 7. A transmission chain is connected to the drive gear 6 and the driven gear 7. The transmission chain consists of several chain links 8 connected end-to-end. The chain links 8 are also connected to… The cover 2 is connected, and the chain link 8 includes a pin 801. The two ends of the pin have opposing inner chain plates 802, and the outer sides of the inner chain plates have opposing outer chain plates 803. The inner chain plates 802 and the outer chain plates 803 are arranged in a row. A reinforcing plate 804 is provided between the opposing outer chain plates 803. The two sides of the reinforcing plate 804 are bent to form a bent plate 806 that is fixed to the outer chain plate 803. The end of the inner chain plate 802 has a through hole 805 that penetrates the end of the outer chain plate 803. The end of the pin 801 rotates through the through hole 805. The reinforcing plate 804 has an oil storage cavity 807 inside. The bent plate 806 has an oil outlet channel 808 that communicates with the oil storage cavity 807.

[0035] Existing elevators have a feed inlet 102 at the bottom of the machine body. Material flows into a material lifting box inside the machine body through the feed inlet 102. Driven by the internal transmission mechanism, the material lifting box transports the material from the bottom of the machine body through the material channel 104 on the machine body, and finally out through the discharge outlet 103 at the top of the machine body. During operation, friction between the material and internal parts of the machine body can easily cause wear. Therefore, it is generally necessary to regularly inspect the internal components, such as the material lifting box, for wear and tear, so as to replace parts in a timely manner and ensure stable operation of the elevator. This invention features a chain drive assembly on the machine body, consisting of a servo motor, a drive gear, a driven gear, and a transmission chain. The transmission chain is connected to a cover, allowing the servo motor to control the up-and-down movement of the cover, i.e., opening or closing the machine body's inspection window. This is simple to operate and highly efficient. When the cover moves up and down, its rollers move within the grooves on the strip plate, resulting in smooth movement of the cover. Compared with existing transmission chain links, the links on the transmission chain in this embodiment of the utility model have a reinforcing plate fixedly connected between the opposing outer chain plates. This reduces the possibility of deformation of the outer chain plates under external forces, which helps to extend the service life of the transmission chain. The oil reservoir in the reinforcing plate can store lubricating oil, and the lubricating oil in the oil reservoir flows to the pin through the oil outlet channel on the bending plate to lubricate the pin. This allows the pin to rotate smoothly in the through holes on the inner and outer chain plates, reducing pin wear and also helping to extend the service life of the transmission chain. This avoids the reduction in the working efficiency of the hoist due to frequent replacement of the transmission chain.

[0036] Combination Figure 6-9 As shown, in a preferred structure, several mounting plates 10 are fixed at intervals on the side of the cover 2, and a snap-fit ​​plate 11 is fixed on the roller 4. The mounting plate 10 has a groove 1001 on its side, and a number of ball columns 12 are provided in the groove 1001. The snap-fit ​​plate 11 has a groove 1101 on its side, and a sleeve 13 corresponding to and snap-fitting the ball columns 12 is provided in the groove 1101. The edge of the mounting plate 10 is flipped to one side to form a flange 1002. The edge of the snap-fit ​​plate 11 and the flange 1002 have an annular groove 1102 for inserting the flange 1002 at the corresponding position. Several snap-fit ​​heads 14 are connected in the annular groove 1101. The end of the snap-fit ​​head 14 is elliptical. A conical groove 1003 corresponding to and snap-fitting the snap-fit ​​head 14 is formed on the flange 1002. A flexible limiting ring 15 is embedded at the opening of the conical groove 1003.

[0037] The mounting plate and snap-fit ​​plate are equipped with ball-and-socket snap-fit ​​structures, as well as snap-fit ​​heads and tapered groove snap-fit ​​mechanisms. These allow for easy snap-fitting and disassembly of the mounting plate and snap-fit ​​plate, enabling convenient installation and removal of the roller from the cover. Replacement of damaged rollers is also convenient. The flexible limiting ring at the tapered groove opening provides cushioning, reducing creep between the snap-fit ​​plate and the mounting plate as the roller moves within the groove on the strip plate, thus ensuring stable roller operation.

[0038] Combination Figure 10 As shown, in a preferred structure, a rectangular groove 105 is arranged around the periphery of the opening 101, and a rectangular sealing strip 9 is inserted into the rectangular groove 105. The inner side of the cover 2 has an insertion groove 201 that corresponds to the rectangular groove 105 and cooperates with the sealing strip 9. The upper part of the sealing strip 9 has a U-shaped cavity 901 that extends through its length, the middle part of the sealing strip 9 has a rectangular cavity 902 that extends through its length, and the lower part of the sealing strip 9 has a U-shaped groove 903 that extends through its length. An elastic support piece 5 is fitted into the U-shaped groove 903. The elastic support piece 5 is triangular and made of elastic steel. The edge of the rectangular groove 105 extends inward to form a blocking edge 106 that blocks the elastic support piece 5.

[0039] After the sealing strip is inserted into the slot on the cover and the rectangular groove on the machine body, it improves the sealing effect of the cover on the access port, effectively reducing the possibility of dust escaping from inside the machine body through the access port, thus helping to maintain a good working environment. The upper part of the sealing strip cooperates with the slot on the cover, and the U-shaped cavity in the upper part of the sealing strip improves its deformability. During the up and down movement of the cover, the upper part of the sealing strip can generate adaptive deformation, avoiding obstruction of the cover's movement. An elastic support piece is installed in the U-shaped groove at the bottom of the sealing strip. By pressing the elastic support piece, the operator can easily deform the lower part of the sealing strip, making it easy to insert the sealing strip into the rectangular groove on the machine body. The rectangular cavity in the middle of the sealing strip further improves its deformability. The retaining edge at the edge of the rectangular groove has a certain blocking effect on the elastic support piece, which can prevent the sealing strip from being dragged out of the rectangular groove due to the friction generated between the sealing strip and the cover during the up and down movement of the cover. The elastic support sheet is made of steel and is triangular in shape, with good elasticity and stability. If the staff needs to remove the sealing strip from the rectangular groove, they need to pull it with force. This design ensures that the sealing strip can be easily installed and removed, and that the sealing strip does not easily fall off during the movement of the cover.

[0040] In summary, this utility model provides a maintenance window for a hoist. The hoist and the cover are connected via a chain drive assembly, enabling automated movement of the cover and thus automated opening and closing of the maintenance window. Compared to a bolt-and-nut connection between the cover and the machine body, this method is simpler and more efficient. The opposing outer chain plates on the drive chain are connected by reinforcing plates, improving their structural strength and reducing the likelihood of deformation under external forces, thus extending the chain's lifespan. Furthermore, the reinforcing plates on the drive chain have oil storage chambers. Bending plates on both sides of the reinforcing plates are inserted into the gap between the outer and inner chain plates. This allows lubricating oil stored in the storage chambers to flow through oil outlet channels on the bending plates to the pins, lubricating them and preventing excessive wear caused by prolonged rotation within the through-holes. This also helps extend the chain's lifespan. This invention features a sealing strip around the opening of the machine body. The sealing strip is inserted into a groove on the cover and the machine body. During operation, the sealing strip effectively prevents dust generated inside the machine from escaping into the air and polluting the working environment. By pressing the elastic support piece inside the sealing strip, the lower part of the sealing strip deforms, allowing for easy insertion into the rectangular groove on the machine body or removal from the machine body, facilitating convenient replacement of the sealing strip. Furthermore, the roller's snap-fit ​​plate and the cover's mounting plate are connected via a ball-and-cylinder sleeve snap-fit ​​structure, as well as a snap-fit ​​head and conical groove snap-fit ​​structure, enabling convenient assembly of the roller and cover. The roller can also be easily removed from the cover by manual pulling, facilitating convenient disassembly of the roller.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A maintenance window for a hoist, characterized in that, The hoist includes a body and a cover. The body has an opening, and vertical strip plates are arranged on both sides of the opening. The two sides of the cover are slidably connected to the strip plates. A servo motor is located at one end of each strip plate, and a drive gear is mounted on the main shaft of the servo motor. A driven gear is located at the other end of each strip plate. A transmission chain is connected to the drive gear and the driven gear. The transmission chain consists of several links connected end-to-end. Each link is also connected to the cover. Each link includes a pin, and both ends of the pin have opposing inner chain plates. Opposing outer chain plates are located on the outer sides of the inner chain plates. The inner and outer chain plates are arranged in an array, and the opposing outer chain plates are connected by reinforcing plates. The end of each inner chain plate has a through hole that penetrates the end of the outer chain plate. The end of the pin passes through the through hole.

2. The inspection window for a hoist according to claim 1, characterized in that, The corresponding side of the strip plate has a strip groove parallel to its length direction, and several rollers are connected at intervals on both sides of the cover, and the rollers are slidably connected in the strip groove.

3. The inspection window for a hoist according to claim 2, characterized in that, Several mounting plates are fixed at intervals on the side of the cover, and a snap-fit ​​plate is fixed on the roller. A groove is opened on the side of the mounting plate, and a number of ball columns are provided in the groove. A second groove is opened on the side of the snap-fit ​​plate, and a sleeve with corresponding ball columns and snap-fit ​​is provided in the second groove.

4. The inspection window for a hoist according to claim 3, characterized in that, The edge of the mounting plate is flipped to one side to form a flange. The edge of the snap-fit ​​plate has an annular groove for inserting the flange at the corresponding position. Several snap-fit ​​heads are connected in the annular groove. The end of the snap-fit ​​head is elliptical. The flange has a conical groove that corresponds to and engages with the snap-fit ​​head.

5. The inspection window for a hoist according to claim 4, characterized in that, A flexible limiting ring is embedded at the opening of the conical groove.

6. The maintenance window for a hoist according to any one of claims 1-5, characterized in that, The two sides of the reinforcing plate are bent to form a bent plate. The bent plate is inserted into the gap between the outer chain plate and the inner chain plate and is fixedly connected to the outer chain plate. The reinforcing plate has an oil storage cavity inside, and the bent plate has an oil outlet channel communicating with the oil storage cavity.

7. The inspection window for a hoist according to claim 6, characterized in that, A rectangular groove is provided around the perimeter of the opening, and a rectangular sealing strip is inserted into the rectangular groove. An insertion groove corresponding to the rectangular groove and cooperating with the sealing strip is opened on the inner side of the cover.

8. The inspection window for a hoist according to claim 7, characterized in that, The upper part of the sealing strip has a U-shaped cavity extending through its length, the middle part of the sealing strip has a rectangular cavity extending through its length, and the lower part of the sealing strip has a U-shaped groove extending through its length. An elastic support piece is fitted into the U-shaped groove, and the edge of the rectangular groove extends inward to form a blocking edge that blocks the elastic support piece.

9. The inspection window for a hoist according to claim 8, characterized in that, The elastic support sheet is triangular in shape and made of elastic steel sheet.

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