Lifting and discharging device of steel ball heat treatment furnace

Abstract

A lifting and discharging device of a steel ball heat treatment furnace comprises a supplemented material lifting mechanism and a discharging mechanism. The material supplementing and lifting mechanism comprises a rack, two sets of lifting chains are arranged on the rack side by side in the left-right direction, and the two sides of the bracket are connected with the two sets of lifting chains. A transverse rod is arranged at the front end of the bracket and connected with the cart in an inserted mode. A first group of rollers and a second group of rollers are respectively arranged on two sides of the bracket, and are distributed in an up-down staggered manner; the first group of rollers are connected with the lifting chain and are arranged in the lifting guide rail; the second group of rollers are arranged in a guiding guide rail, the guiding guide rail is bent outwards, and when the trolley is at the unloading station, the trolley automatically turns over to unload materials; the discharging mechanism comprises a support, a storage hopper is fixed to the support, a discharging hopper is arranged below the storage hopper, a quantitative discharging mechanism is installed at a discharging port of the discharging hopper, a chute is installed at the position, at the bottom end of the quantitative discharging mechanism, of the support, and the other end of the chute extends into the furnace. The lifting and blanking device of the steel ball heat treatment furnace provided by the utility model can realize lifting, supplementing and precise blanking of steel balls.

Description

Technical Field

[0001] The utility model relates to steel ball processing equipment, in particular to a lifting and unloading device for a steel ball heat treatment furnace. Background Art

[0002] During the production process, carbon needs to be added to the steel balls for heat treatment to ensure that the steel balls have good hardness. There are two problems with the existing furnace feeding: 1) Since the heat treatment furnace is a spiral conveyor, the existing feeding device cannot accurately control the feeding amount, resulting in the steel balls being stuck when the feeding amount is too much, and the feeding efficiency is low and the energy consumption is high when the feeding amount is too little. 2) The feeding port of the furnace body is located at a high position, and the installation position of the feeding device will also be correspondingly high. The existing feeding generally uses a gantry crane to lift a box of steel balls to the corresponding height, and then manually pour a box of steel balls into the corresponding hopper, which is time-consuming and laborious. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a lifting and unloading device for a steel ball heat treatment furnace, which can realize lifting, replenishing and accurate unloading of steel balls.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A lifting and unloading device for a steel ball heat treatment furnace, comprising a feeding and lifting mechanism and a unloading mechanism;

[0006] The feeding and lifting mechanism comprises a frame, on which two groups of lifting chains are arranged side by side on the left and right sides, and the two sides of the bracket are connected with the two groups of lifting chains; a cross bar is provided at the front end of the bracket, and the cross bar is plugged into the cart; a first group of rollers and a second group of rollers are respectively provided on both sides of the bracket, and the first group of rollers and the second group of rollers are staggered in an up-and-down manner; the first group of rollers are connected to the lifting chains and are arranged in the lifting guide rails; the second group of rollers are arranged in the guide rails, and the guide rails are bent outwards, and at the unloading station, the cart turns over and unloads by itself;

[0007] The unloading mechanism comprises a bracket, a storage hopper is fixed on the bracket, a unloading hopper is arranged below the storage hopper, a quantitative unloading mechanism is installed at the discharge port of the unloading hopper, a chute is installed at the bracket at the bottom end of the quantitative unloading mechanism, and the other end of the chute extends into the furnace.

[0008] The quantitative unloading mechanism includes a guide block, which is threadedly connected to the discharge port of the unloading hopper; a plurality of channels are circumferentially arranged on the guide block, and the channels are used for steel balls to pass through and fall; a turntable is arranged at the lower part of the discharge port of the unloading hopper, and the turntable is rotatably connected to the sealing plate at the bottom of the discharge port through a rotating shaft, and the rotating shaft is driven to rotate by a servo motor through a chain transmission mechanism; through holes are arranged on the turntable and the sealing plate, and the through holes of the turntable are a group and are directly opposite to the through holes of the channel or the sealing plate during rotation; the through holes of the sealing plate match the number of the discharge ports of the channel and are staggered.

[0009] The diameter and height of the through hole of the rotating disk are matched with the diameter of the steel ball.

[0010] A ladder is arranged on one side of the bracket, and a platform is arranged on the upper part of the ladder.

[0011] The utility model provides a lifting and unloading device for a steel ball heat treatment furnace, and the technical effects are as follows:

[0012] 1) By using the existing automatic unloading cart-type hoist, the steel balls can be easily, quickly and safely delivered to the high storage hopper. Compared with the gantry crane, it is low-cost, simple to operate and efficient.

[0013] 2) A through hole is set on the turntable, the size of which can only accommodate one steel ball, and multiple groups of channels are set on the guide block. The corresponding sealing plate is provided with through holes corresponding to the channels and staggered. In this way, the turntable receives a steel ball from the channel of the guide block, and after rotating a certain angle, it can fall from the through hole of the sealing plate. The number of steel balls falling after one rotation is certain. By controlling the rotation speed of the turntable, the feeding speed of the steel balls can be accurately controlled to ensure matching with the heat treatment furnace, avoiding material jamming caused by excessive feeding or low conveying efficiency and heat utilization rate caused by insufficient feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a top view of the utility model.

[0016] Figure 2 It is the front view of the utility model.

[0017] Figure 3 It is a left view of the material feeding and lifting mechanism in the utility model.

[0018] Figure 4 It is the front view of the material feeding and lifting mechanism in the utility model.

[0019] Figure 5 It is the front view of the bracket in the utility model.

[0020] Figure 6 It is a top view of the bracket in the utility model.

[0021] Figure 7 It is a cross-sectional view of the quantitative feeding mechanism in the utility model (schematic diagram of the first state).

[0022] Figure 8 It is a cross-sectional view of the quantitative feeding mechanism in the utility model (second state schematic diagram).

[0023] In the figure: feeding and lifting mechanism 1, unloading mechanism 2, frame 1.1, driving device 1.2, driving wheel group 1.3, lifting chain 1.4, tensioning device 1.5, cart 1.6, bracket 1.7, lifting guide rail 1.8, guide rail 1.9, driven wheel group 1.10, cross bar 1.11, first group of rollers 1.12, second group of rollers 1.13, bracket 2.1, storage hopper 2.2, unloading hopper 2.3, quantitative unloading mechanism 2.4, chute 2.5, chain conveying mechanism 2.4.1, servo motor 2.4.2, guide block 2.4.3, channel 2.4.4, steel ball 2.4.5, turntable 2.4.6, sealing plate 2.4.7, through hole 2.4.8. DETAILED DESCRIPTION

[0024] like Figure 1-2 As shown, a lifting and unloading device for a steel ball heat treatment furnace comprises a feeding and lifting mechanism 1 and a unloading mechanism 2. The feeding and lifting mechanism 1 is used to regularly add materials to a storage hopper 2.2, and the unloading mechanism 2 is used to quantitatively input steel balls into the heat treatment furnace.

[0025] like Figure 3-4 As shown, in the actual production process, the steel balls are processed into spherical shapes and then loaded into storage boxes. According to the existing technology, the storage boxes are generally hoisted and unloaded by gantry cranes, which is dangerous in the workshop and cumbersome to operate. Therefore, the feeding and lifting mechanism 1 of this application can adopt the patent "A trolley-type hoist with automatic unloading" with application number "201920908624.1". The overall structure of the feeding and lifting mechanism 1 of this application is basically the same as that of the patent, and only the size is improved.

[0026] For the sake of convenience, this application still provides a certain description of the organization.

[0027] like Figure 3-4 As shown, the feeding and lifting mechanism 1 comprises a frame 1.1, a driving sprocket set 1.3 is installed on the upper right side of the frame 1.1, and a driven sprocket set 1.10 is installed on the lower longitudinal side. A lifting chain 1.4 passes around the driving sprocket and the driven sprocket to form a closed loop. Two vertically parallel lifting chains 1.4 are connected to an integral bracket 1.7, which is used to lift a trolley 1.6 entering from the feeding station at the lower left side of the frame 1.1, and the trolley 1.6 is filled with steel balls.

[0028] like Figure 5-6 As shown, a first group of rollers 1.12 and a second group of rollers 1.13 are respectively disposed on both sides of the bracket 1.7, and the first group of rollers 1.12 and the second group of rollers 1.13 are staggered in an up-and-down manner.

[0029] like Figure 3As shown, the corresponding frame 1.1 is welded with a lifting rail 1.8 and a guide rail 1.9 on both sides. When the drive device 1.2 is started to lift the bracket 1.7, the second group of rollers 1.13 at the lower left side of the bracket moves upward in the lifting rail 1.8, and the first group of rollers 1.12 at the upper right side of the bracket moves upward in the guide rail 1.9. When reaching the unloading station, the bracket 1.7 rotates under the guidance of the guide rail 1.9, accompanied by the unloading of the steel balls in the cart 1.6 into the storage hopper 2.2. When the rolling wheel 1.13 reaches the highest point of the lifting rail 1.8 and the material has been unloaded, the drive device 1.2 completes the operation of lowering the bracket 1.7 to the ground after receiving the reverse signal, and the cart 1.6 moves out.

[0030] like Figure 2 As shown, the unloading mechanism 2 includes a bracket 2.1, on which a storage hopper 2.2 is fixed. The storage hopper 2.2 is used to store a certain amount of steel balls to avoid frequent loading. An opening and closing valve is installed on the discharge pipe at the lower end of the storage hopper 2.2. By opening the corresponding opening and closing valve, the steel balls can be easily slipped out into the unloading hopper 2.3 below. The unloading hopper 2.3 is in the form of a funnel, and a discharge port is provided at the lower end. A quantitative unloading mechanism 2.4 is installed in the discharge port. The quantitative unloading mechanism 2.4 is used for quantitative unloading. A chute 2.5 is installed obliquely below the quantitative unloading mechanism 2.4, and the other end of the chute 2.5 extends into the furnace.

[0031] like Figure 7-8 As shown, the quantitative feeding mechanism 2.4 includes a guide block 2.4.3, the upper part of the guide block 2.4.3 is a large cylinder, the lower part is a small cylinder, and the middle part is a truncated cone, which connects the upper and lower parts into a whole. The lower part of the guide block 2.4.3 is provided with an external thread, and the guide block 2.4.3 is threadedly connected to the upper part of the discharge port of the lower hopper 2.3 to maintain fixation. A plurality of channels 2.4.4 are arranged circumferentially on the guide block 2.4.3, and the channels 2.4.4 are arc-shaped, with the upper end being the feed port and the lower end being the discharge port. The channels 2.4.4 are used for the steel balls 2.4.5 to pass through and fall. A turntable 2.4.6 is arranged below the guide block 2.4.3, and the center of the lower end of the turntable 2.4.6 is fixedly connected to the rotating shaft. The bearing at the center of the rotating shaft and the sealing plate 2.4.7 can be rotatably connected and extend out of the sealing plate 2.4.7, and the sealing plate 2.4.7 is fixed at the bottom of the discharge port of the lower hopper 2.3. A passive sprocket is installed at the bottom of the rotating shaft, and a servo motor 2.4.2 is installed on the corresponding bracket 2.1. The output end of the servo motor 2.4.2 is connected to the active sprocket. The passive sprocket, the active sprocket and the chain constitute a chain transmission mechanism 2.4.1. When the servo motor 2.4.2 is started, the turntable 2.4.6 can be driven to rotate through the chain transmission mechanism 2.4.1.

[0032] The rotating disk 2.4.6 and the sealing plate 2.4.7 are both provided with through holes 2.4.8, which penetrate the rotating disk 2.4.6 and the sealing plate 2.4.7 from top to bottom. The through holes 2.4.8 of the rotating disk 2.4.6 are a group and face the discharge port of the channel 2.4.4 or the through holes 2.4.8 of the sealing plate 2.4.7 during the rotation process. The number of through holes 2.4.8 of the sealing plate 2.4.7 matches the number of discharge ports of the channel 2.4.4 and are arranged in a staggered manner.

[0033] The through hole 2.4.8 of the rotating disk 2.4.6 only accommodates one steel ball 2.4.5, thereby ensuring quantitative control.

[0034] A ladder 2.6 is provided on one side of the support 2.1, and a platform is provided on the upper part of the ladder 2.6, so that it is convenient for the staff to stand on the platform to check the feeding situation or perform later maintenance.

[0035] In addition, a vibration motor is arranged at the lower end of the material discharge hopper 2.3. The vibration of the vibration motor helps discharge the material.

[0036] Working principle and process:

[0037] In this embodiment, the channels 2.4.4 are divided into two groups and arranged left and right on the guide block 2.4.3. The through holes 2.4.8 on the sealing plate 2.4.7 are divided into two groups and arranged front and back on the sealing plate 7.

[0038] 1) The turntable 2.4.6 rotates under the action of the driving device. First, the through hole 2.4.8 of the turntable 2.4.6 faces the channel 2.4.4 on the left. A steel ball in the channel 2.4.4 on the left falls into the through hole 2.4.8 of the turntable 2.4.6. Figure 1 After the turntable 2.4.6 rotates 90 degrees clockwise, the through hole 2.4.8 of the turntable 2.4.6 is aligned with the through hole 2.4.8 on the rear side of the sealing plate 2.4.7, and the steel ball falls from the through hole 2.4.8 of the turntable 6 to the through hole 2.4.8 on the rear side of the sealing plate 7 and falls to the chute 2.5, and finally enters the furnace through the chute 2.5, as shown. Figure 2 shown.

[0039] 2) After the turntable 2.4.6 continues to rotate 90 degrees, the through hole 2.4.8 of the turntable 2.4.6 faces the channel 2.4.4 on the right, and a steel ball from the channel 2.4.4 on the right falls into the through hole 2.4.8 of the turntable 2.4.6. After the turntable 6 continues to rotate 90 degrees, the through hole 2.4.8 of the turntable 2.4.6 faces the through hole 2.4.8 on the front side of the sealing plate 2.4.7, and the steel ball falls from the through hole 2.4.8 of the turntable 6 into the through hole 2.4.8 on the front side of the sealing plate 2.4.7 and falls down, and can fall onto the chute 2.5, and finally enter the furnace through the chute 2.5.

[0040] In this way, the turntable 2.4.6 rotates one circle, and two steel balls fall down. The material feeding speed can be adjusted by controlling the rotation speed of the turntable 2.4.6, and then matched with the conveying speed and conveying volume of the heat treatment furnace.

[0041] 3) The staff regularly checks the amount of steel balls in the storage hopper 2.2 and the lower hopper 2.3. If the amount in the lower hopper 2.3 is insufficient, open the opening and closing valve on the storage hopper 2.2 to discharge the material. If the amount in the storage hopper 2.2 is insufficient, the trolley 1.6 filled with steel balls can be plugged into the bracket 1.7, and then lifted and turned over by the lifting chain 1.4 to send the steel balls into the storage hopper 2.2 for feeding.

Claims

1. A lifting and unloading device for a steel ball heat treatment furnace, characterized in that: It comprises a feeding and lifting mechanism (1) and a feeding and unloading mechanism (2); The feeding and lifting mechanism (1) comprises a frame (1.1), two groups of lifting chains (1.4) are arranged side by side on the frame (1.1), and the two sides of the bracket (1.7) are connected to the two groups of lifting chains (1.4); a cross bar (1.11) is arranged at the front end of the bracket (1.7), and the cross bar (1.11) is plugged into the trolley (1.6); a first group of rollers (1.12) and a second group of rollers (1.13) are respectively arranged on both sides of the bracket (1.7), and the first group of rollers (1.12) and the second group of rollers (1.13) are staggered in an upper and lower manner; the first group of rollers (1.12) is connected to the lifting chain (1.4) and is arranged in a lifting guide rail (1.8); the second group of rollers (1.13) is arranged in a guide rail (1.9), and the guide rail (1.9) is bent outwardly, and when at the unloading station, the trolley (1.6) automatically turns over to unload; The material discharge mechanism (2) comprises a bracket (2.1), a storage hopper (2.2) is fixed on the bracket (2.1), a material discharge hopper (2.3) is provided below the storage hopper (2.2), a quantitative material discharge mechanism (2.4) is installed at the discharge port of the material discharge hopper (2.3), a chute (2.5) is installed at the bracket (2.1) at the bottom end of the quantitative material discharge mechanism (2.4), and the other end of the chute (2.5) extends into the furnace.

2. The lifting and unloading device for a steel ball heat treatment furnace according to claim 1, characterized in that: The quantitative unloading mechanism (2.4) comprises a guide block (2.4.3), the guide block (2.4.3) is threadedly connected to the discharge port of the unloading hopper (2.3); a plurality of channels (2.4.4) are arranged on the circumferential direction of the guide block (2.4.3), the channels (2.4.4) are used for the steel balls (2.4.5) to pass through and fall; a rotating disk (2.4.6) is arranged at the lower part of the discharge port of the unloading hopper (2.3), the rotating disk (2.4.6) is rotatably connected to the sealing plate (2.4.7) at the bottom of the discharge port through a rotating shaft, and the rotating shaft is connected to the sealing plate (2.4.7) at the bottom of the discharge port. The servo motor (2.4.2) drives the chain conveyor (2.4.1) to rotate; the turntable (2.4.6) and the sealing plate (2.4.7) are both provided with through holes (2.4.8); the through holes (2.4.8) of the turntable (2.4.6) are a group and are directly opposite to the through holes (2.4.8) of the channel (2.4.4) or the sealing plate (2.4.7) during rotation; the through holes (2.4.8) of the sealing plate (2.4.7) match the number of the discharge ports of the channel (2.4.4) and are arranged in a staggered manner.

3. The lifting and unloading device for a steel ball heat treatment furnace according to claim 2 is characterized in that: The diameter and height of the through hole (2.4.8) of the rotating disk (2.4.6) match the diameter of the steel ball (2.4.5).

4. The lifting and unloading device for a steel ball heat treatment furnace according to claim 1, characterized in that: A ladder (2.6) is provided on one side of the bracket (2.1), and a platform is provided on the upper part of the ladder (2.6).

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