Heavy duty apron feeder wheel arrangement

Abstract

The utility model belongs to mine machinery material conveying equipment, concretely is a heavy -duty plate feeder wheeled device. Including the annular plate chain that is installed on the frame and is along its encircles setting, and be used for driving the drive unit of plate chain operation, head wheel unit and tail wheel unit, still include the carrier wheel unit, this carrier wheel unit includes carrier wheel wheel body, carrier wheel main shaft, self -lubricating bushing, side cover, axle sleeve and mounting plate, the mounting plate is fixed in the frame side wall for supporting carrier wheel unit to support the plate chain, carrier wheel main shaft is worn in the center hole of carrier wheel wheel body, and is equipped with between both self -lubricating bushing, carrier wheel wheel body can rotate around carrier wheel main shaft, one end of carrier wheel main shaft realizes axial location through the side cover fixed in carrier wheel wheel body, the other end of carrier wheel main shaft is worn into and fixed in axle sleeve, axle sleeve is fixedly connected to one end of mounting plate. Its realized long -term maintenance -free operation, has reduced the failure rate of heavy -duty plate feeder carrier wheel greatly.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying equipment for mining machinery, specifically a heavy-duty plate feeder wheel device. Background Technology

[0002] Heavy-duty plate feeders are continuous material conveying machines, mainly used for the continuous and uniform feeding and transfer of materials to crushers, conveyors, or other working equipment along horizontal or inclined directions. This equipment is suitable for large and medium-sized mines, cement plants, building materials, and other industries. It can convey large pieces of material and operate stably in harsh environments such as high temperature and high humidity. It is especially suitable for handling large, high-temperature, and sharp materials, and can operate reliably in open-air, humid, and harsh working conditions.

[0003] In the roller unit of this equipment, the roller assembly supports the rotating chain plate. Because the rollers are installed at the bottom of the equipment and are numerous, daily inspection and maintenance are difficult. Traditional designs use rolling bearings or copper bushings with thin oil lubrication, which are susceptible to environmental factors such as dust, high temperatures, and humidity, leading to damage to bearings and other components and unexpected downtime. Statistics show that the average maintenance cycle for such bearings is only about 200 hours. Furthermore, in the tail wheel unit, located at the feeding and dropping end, it is subjected to the enormous impact of falling materials and a severe dusty environment. Conventional rolling bearing designs have a high failure rate at this location, and online status monitoring is difficult. Summary of the Invention

[0004] This utility model addresses the shortcomings of existing technologies and proposes a heavy-duty plate feeder wheel device to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A heavy-duty plate feeder wheel device includes an annular plate chain mounted on a frame and arranged around it, a drive unit, a head wheel unit, and a tail wheel unit for driving the plate chain, and a support roller unit. The support roller unit includes a support roller body, a support roller main shaft, a self-lubricating bushing, a side cover, a bushing, and a mounting plate. The mounting plate is fixed to the side wall of the frame and is used to support the support roller unit to support the plate chain. The support roller main shaft passes through the central hole of the support roller body, and the self-lubricating bushing is provided between the two. The support roller body can rotate around the support roller main shaft. One end of the support roller main shaft is axially limited by the side cover fixed to the support roller body, and the other end of the support roller main shaft passes through and is fixed in the bushing. The bushing is fixed to one end of the mounting plate.

[0006] Furthermore, the tail wheel unit includes a tail wheel body, a tail wheel main shaft, and two tail wheel supports; the tail wheel supports are fixed to the frame and are used to support the tail wheel unit to pull and support the plate chain; the tail wheel body is supported between the two tail wheel supports by the tail wheel main shaft, and wear-resistant bushings are provided between the tail wheel main shaft and the tail wheel body, and between the tail wheel main shaft and each tail wheel support; sealing side covers are detachably connected to both sides of the tail wheel unit, and a through hole is opened in the center of the sealing side cover; the tail wheel main shaft has an axial center hole along its axial center, the axial center hole passes through the tail wheel main shaft and communicates with the through hole on the sealing side cover, for the probe of the pressure transmitter to be installed.

[0007] Furthermore, the self-lubricating bushing includes an alloy copper bushing, and a lubricating graphite block is embedded inside the alloy copper bushing.

[0008] Furthermore, the wear-resistant bushing is made of copper.

[0009] Furthermore, the support roller unit also includes a sensing probe and a non-contact sensor; the sensing probe is located on the outer end face of the side cover, and the non-contact sensor is located on the frame at a position corresponding to the sensing probe; when the support roller rotates, the sensing probe passes through the position of the non-contact sensor.

[0010] Furthermore, the inner wall of the alloy copper sleeve is provided with an circumferential chip removal groove and an axial chip removal groove.

[0011] Furthermore, the outer periphery of the rim of the support roller body is provided with a raised annular step structure.

[0012] Compared with the prior art, this utility model has the following advantages.

[0013] This utility model's roller unit uses an alloy copper sleeve as a lubricating bearing, with graphite blocks embedded inside the alloy copper sleeve as a lubricant, achieving long-term maintenance-free operation and significantly reducing the failure rate of the rollers in heavy-duty plate feeders. Simultaneously, by installing induction probes on the side cover and non-contact sensors at corresponding positions on the frame, real-time online monitoring of the roller's rotation status is achieved, facilitating early warning and maintenance. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.

[0015] Figure 1 This is a side view of a heavy-duty plate feeder wheel device.

[0016] Figure 2 This is a cross-sectional view of a heavy-duty plate feeder wheel device.

[0017] Figure 3 This is a partial enlarged view of a heavy-duty plate feeder wheel device.

[0018] Figure 4 This is a front view of the support roller unit of a heavy-duty plate feeder wheel device.

[0019] Figure 5 This is a cross-sectional view of the support roller unit of a heavy-duty plate feeder wheel device.

[0020] Figure 6 This is a front view of the tail wheel unit of a heavy-duty plate feeder wheel device.

[0021] Figure 7 This is a cross-sectional view of the tail wheel unit of a heavy-duty plate feeder wheel device.

[0022] In the diagram, 1. Support roller unit; 2. Tail wheel unit; 3. Cargo box; 4. Plate chain; 5. Frame; 6. Drive unit; 7. Head wheel unit; 101. Mounting plate; 102. Bushing; 103. Set screw; 104. Support roller spindle; 105. Side cover; 106. Sealing ring; 107. Alloy copper sleeve; 108. Lubricating graphite block; 109. Support roller body; 110. Induction probe; 111. Non-contact sensor; 201. Tail wheel body; 202. Tail wheel spindle; 203. Copper sleeve; 204. Washer; 205. Sealing side cover; 206. Pressure transmitter; 207. Tail wheel support; 208. Center hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0024] like Figure 1-7 As shown in the figure, this embodiment of the heavy-duty plate feeder wheel device mainly consists of a frame 5, a drive unit 6, and an annular plate chain 4 surrounding it. A head wheel unit 7 is located at the front end of the annular plate chain 4, and a tail wheel unit 2 is located at the rear end. The tail wheel unit 2 is fixedly connected to the frame 5 and is used to support and pull the entire plate chain 4. On both sides below the middle of the plate chain 4, there are parallel supporting roller units 1 to support the middle part of the plate chain 4 and prevent it from collapsing. When a cargo box 3 is placed on the feeder, the drive unit 6, through the tail wheel unit 2 or the head wheel unit 7, drives the plate chain 4 to operate in a unidirectional cycle, transporting the cargo box 3 from one end of the plate chain 4 to the other.

[0025] In Example 1, the drive unit 6 can employ components such as a drive motor, a reducer, and a coupling. Its output shaft is connected to the main shaft of the head wheel unit 7 or the tail wheel unit 2 to provide power for the cyclic operation of the plate chain 4. The drive unit 6 can be configured with a frequency converter according to the working conditions to achieve stepless adjustment of the feeding speed.

[0026] Example 2-1: The support roller body 109 has a cylindrical structure with a central through hole. An alloy copper sleeve 107 is fitted into this central through hole with a clearance fit. The alloy copper sleeve 107 has radially distributed through holes, each containing a lubricating graphite block 108. A support roller spindle 104 is inserted into the central hole of the alloy copper sleeve 107. One end face of the support roller spindle 104 has a sealing ring 106, and a side cover 105 is provided on the corresponding side. The side cover 105 is fastened to the central through hole on one side of the support roller body 109 and fixed to the support roller body 109 with bolts, thereby sealing the central hole on that side and axially limiting the support roller spindle 104. The other end of the support roller spindle 104 extends out of the support roller body 109, and a bushing 102 is fitted onto this extended portion. The bushing 102 has a threaded hole on the side near the roller body 109. The roller spindle 104 can be tightened and fixed by screwing in the set screw 103. A mounting plate 101 is fixedly mounted on the radial outer end face of the bushing 102. The mounting plate 101 has mounting holes. The side of the frame 5 has corresponding mounting holes. After the roller unit 1 is inserted as a whole, the mounting plate 101 is fixedly connected to the mounting hole end face of the frame 5 by screws.

[0027] In addition, the inner wall of the alloy copper sleeve 107 is provided with an circumferential chip removal groove and an axial chip removal groove. The outer circular surface of the support roller body 109 is designed as a raised annular step structure, which can provide axial positioning for the chain during operation.

[0028] Furthermore, a sensing probe 110 is installed on the outer end face of the side cover 105, and a non-contact sensor 111 is installed on the frame 5 at a position corresponding to the sensing probe 110. When the roller unit 1 rotates, the sensing probe 110 can trigger the non-contact sensor 111 at intervals, thereby feeding back the rotation frequency signal of the roller body 109 to the host system in real time to effectively monitor its operating status.

[0029] Example 2-2: The tail wheel body 201 has a disc structure with a through hole at its center. The two tail wheel supports 207 also have through holes. After placing the tail wheel body 201 between the two tail wheel supports 207 and aligning the through holes concentrically, a copper sleeve 203 is fitted into the through hole with a clearance fit. The tail wheel spindle 202 is inserted into the inner hole of the copper sleeve 203 with a clearance fit. Through the cooperation of the copper sleeve 203 and the tail wheel spindle 202, the tail wheel body 201 is supported between the two tail wheel supports 207. Washers 204 are placed on the outer end faces of both sides of the tail wheel supports 207, corresponding to the two end faces of the tail wheel spindle 202. Sealing side covers 205 are then fixedly installed on both sides with screws, thereby sealing the end faces of the tail wheel supports 207. A through hole is opened in the center of one of the sealing side covers 205, which communicates with the axial center hole 208 at one end of the tail wheel spindle 202. A pressure transmitter 206 is installed on this through-hole.

[0030] Furthermore, the tail wheel main shaft 202 has a central hole 208 along its axial center. The pressure transmitter 206 is a gas-liquid dual-purpose diffused silicon pressure transmitter, which can monitor the oil and gas pressure in the central hole 208 inside the tail wheel main shaft 202 in real time. By comparing its monitoring data with the preset time-pressure curve inside the control system, it is possible to determine whether a fault such as seal damage has occurred.

[0031] Example 3: After the plate feeder starts operating, the support roller 109 supports the running chain plate at the bottom. The raised annular step structure on the surface of the support roller 109 effectively limits the left and right swaying of the running chain plate. Based on the diameter D of the support roller 109 and the frequency H fed back by the non-contact sensor 111, the rotational linear velocity of the support roller 109 can be calculated and compared with the speed set by the host system. Specifically, based on the diameter D of the support roller and the feedback frequency H of the non-contact inductive sensor, the rotational speed of the roller is calculated and compared with the speed set by the host system. When the rotational speed V of the roller is less than the host speed, it can be determined that the support roller unit 1 is abnormal or suspected of being abnormal, and the system will prompt the maintenance personnel. The maintenance personnel can accurately find the position that needs to be replaced by assigning a number to the corresponding support roller 109, and can quickly replace and maintain the support roller unit 1 by removing the set screw 103 on the bushing 102.

[0032] Example 4: After the plate feeder is started, the tail wheel unit 2 uses a tail wheel spindle 202 (with a central hole 208), a copper sleeve 203, and thin oil lubrication. A pressure transmitter 206 with a range of 0-5 kPa is installed on the sealing side cover 205 on one side of the tail wheel unit 2, which is connected to the PLC system with a 4-20mA output signal. As the equipment operates, the internal temperature of the tail wheel body 201 gradually increases, causing the oil temperature to rise, thereby generating a certain positive pressure inside. Through the pressure transmitter 206 installed on the end face of the tail wheel spindle 202, the oil vapor pressure value inside the central hole 208 of the tail wheel body 201 can be monitored in real time, and the signal is transmitted to the PLC. By comparing with the preset time-pressure curve in the PLC control system, when the measured pressure value is continuously lower than the expected value of the curve, it can be determined that the gasket 204 or the seal has been damaged and leaking. The PLC control system can control the plate feeder to automatically stop, thereby preventing the accident from escalating further. Since PLC execution and other techniques are not innovative aspects of this utility model and are conventional technical means, they will not be elaborated here.

[0033] Example 5: The tail wheel unit 2 also includes a thin oil lubrication system, which is connected to the lubrication gap between the wear-resistant bushing and the tail wheel main shaft 202. The copper bushing 203 forms wear-resistant bushing interfaces (which can be integral or segmented) in the corresponding areas of the tail wheel body and the two side supports.

[0034] This invention employs a copper sleeve structure in the tail wheel unit and incorporates an axial center hole and a sealing side cover for mounting a pressure transmitter in the tail wheel main shaft. This allows for real-time monitoring of internal oil and gas pressure changes, timely detection of potential sealing leaks, and prevention of escalation of accidents. Furthermore, the annular stepped structure on the support roller body and the circumferential and axial chip removal grooves within the alloy copper sleeve further enhance the guiding performance of the chain plate and the durability of the bushing, thereby strengthening the overall adaptability of the device under heavy-load and dusty operating conditions.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "preferred embodiment," "detailed description," or "preferred embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Therefore, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of this utility model.

Claims

1. A heavy-duty apron feeder wheel arrangement, comprising an endless apron chain (4) mounted on a frame (5) and arranged therearound, and a drive unit (6) for driving the apron chain (4) in operation, a head wheel unit (7) and a tail wheel unit (2), characterized in that It also includes a roller unit (1), which includes a roller body (109), a roller spindle (104), a self-lubricating bushing, a side cover (105), a bushing (102), and a mounting plate (101); the mounting plate (101) is fixed to the side wall of the frame (5) and is used to support the roller unit (1) to support the plate chain (4). The main shaft (104) of the support roller passes through the central hole of the support roller body (109), and the self-lubricating bushing is provided between the two. The support roller body (109) can rotate around the main shaft (104). One end of the roller spindle (104) is axially limited by the side cover (105) fixed to the roller body (109), and the other end of the roller spindle (104) is inserted into and fixed in the bushing (102), which is fixed to one end of the mounting plate (101).

2. A wheel assembly for a heavy-duty apron feeder as claimed in claim 1, wherein, The tail wheel unit (2) includes a tail wheel body (201), a tail wheel main shaft (202), and two tail wheel supports (207). The tail wheel support (207) is fixed on the frame (5) to support the tail wheel unit (2) in order to pull and support the plate chain (4). The tail wheel body (201) is supported between two tail wheel supports (207) by the tail wheel main shaft (202). Wear-resistant bushings are provided between the tail wheel main shaft (202) and the tail wheel body (201), and between the tail wheel main shaft (202) and each tail wheel support (207). The tail wheel unit (2) is detachably connected to two sealing side covers (205), and the sealing side cover (205) has a through hole in the center; the tail wheel main shaft (202) has an axial center hole (208) along its axial center, the axial center hole (208) passes through the tail wheel main shaft (202) and is correspondingly connected to the through hole on the sealing side cover (205), for the detection part of the pressure transmitter (206) to be installed.

3. A wheel assembly for a heavy-duty apron feeder as defined in claim 1, characterized in that The self-lubricating bushing includes an alloy copper sleeve (107), and a lubricating graphite block (108) is embedded inside the alloy copper sleeve (107).

4. A wheel assembly for a heavy-duty apron feeder as defined in claim 2, wherein, The wear-resistant bushing is made of copper (203).

5. A wheel assembly for a heavy-duty apron feeder as defined in claim 1, wherein, The roller unit (1) also includes a sensing probe (110) and a non-contact sensor (111); the sensing probe (110) is located on the outer end face of the side cover (105), and the non-contact sensor (111) is located on the frame (5) at a position corresponding to the sensing probe (110); when the roller body (109) rotates, the sensing probe (110) passes through the position of the non-contact sensor (111).

6. A wheel assembly for a heavy-duty apron feeder as defined in claim 3, wherein, The inner wall of the alloy copper sleeve (107) is provided with an circumferential chip removal groove and an axial chip removal groove.

7. The heavy-duty plate feeder wheel device according to claim 1, characterized in that, The outer circumference of the rim of the roller body (109) is provided with a raised annular step structure.

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