A device for releasing the assembly stress of a vibrating roller

Abstract

The application provides a device for releasing assembly stress of a vibrating release carrier roller, comprising a box body, one end of the box body being provided with a side plate, the side plate being provided with an outer shaft sleeve for mounting a clamping cylinder; a movable cover plate, the movable cover plate being hinged to the box body, an outer wall of the movable cover plate being used for abutting against an end of the carrier roller; an electromagnetic vibrator, one end of the electromagnetic vibrator being connected with the movable cover plate, the electromagnetic vibrator being used for driving the movable cover plate to vibrate, so as to apply a vibration load to the carrier roller in a clamped state; a buffer assembly, the buffer assembly being used for providing elastic support for the movable cover plate; and a position sensor, the position sensor being used for detecting a displacement of the buffer assembly, when it is detected that the displacement of the buffer assembly reaches a preset value, it is determined that the carrier roller has been assembled and clamped, and the electromagnetic vibrator is started. The device can release the vibration load of the carrier roller, under the action of vibration, the assembly stress in the carrier roller is released, the cooperation between the parts is more compact and uniform, so that the rotating resistance of the carrier roller is reduced.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor idler manufacturing technology, and in particular to a device for relieving assembly stress of idlers through vibration. Background Technology

[0002] As a crucial component of belt conveyors, idler rollers directly impact the conveyor's operating efficiency and energy consumption. Idler roller assembly stress refers to the internal stress generated during idler roller assembly due to interference fits, welding deformation, bolt preload, or improper assembly processes in components such as bearings, seals, shafts, and roller bodies. This assembly stress leads to uneven stress distribution on internal components during operation, increasing rotational resistance, reducing idler roller lifespan, and simultaneously increasing the belt conveyor's energy consumption.

[0003] Traditional idler manufacturing processes often overlook the impact of assembly stress on idler performance. While some methods exist to reduce idler rotational resistance, such as using higher-quality bearings and improving sealing structures, effective means of eliminating assembly stress are lacking. For example, some existing idler production lines simply assemble individual components without considering the impact of stress generated during assembly on the overall performance of the idler. This results in high rotational resistance during actual operation, failing to meet the demands for efficient and energy-saving conveying. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide a device for relieving assembly stress of idler rollers through vibration, thereby solving the problem of high rotational resistance caused by assembly stress in the manufacturing process of existing idler rollers.

[0006] To achieve the above objectives, the present invention provides a device for relieving assembly stress of idler rollers through vibration, comprising:

[0007] The housing has a side plate at one end and an outer bushing on the side plate. The outer bushing is used to install a clamping cylinder.

[0008] A movable cover plate is provided at one end of the housing away from the side plate. The movable cover plate is hinged to the housing, and the outer wall of the movable cover plate is used to abut the end of the idler roller.

[0009] An electromagnetic vibrator is installed inside the housing. One end of the electromagnetic vibrator is connected to the movable cover plate and is used to drive the movable cover plate to vibrate, thereby applying a vibration load to the roller in the clamped state.

[0010] A buffer assembly, located inside the housing, is used to provide elastic support for the movable cover plate;

[0011] A position sensor is used to detect the displacement of the buffer assembly. When the displacement of the buffer assembly reaches a preset value, it is determined that the idler roller has been installed and clamped, and the electromagnetic vibrator is started.

[0012] According to one embodiment of the present invention, the housing further includes a hinge. The housing includes a frame, a top plate, a bottom plate, a front plate, and a rear plate. The top plate and the bottom plate are respectively connected to the top and bottom of the frame. One end of the top plate extends to the side of the frame and is provided with an opening. One end of the hinge is installed in the opening, and the other end of the hinge is connected to the top of the movable cover plate. The front plate and the rear plate are respectively connected to the front and rear of the frame.

[0013] According to one embodiment of the present invention, the buffer assembly includes a first spring, a first bushing, a second bushing, a spring shaft, a pin, and a mounting plate. Two mounting plates are provided, fixed to the base plate and arranged opposite each other in the front-rear direction. Each mounting plate has a vertically extending first strip-shaped hole. The first bushing is connected to the inner wall of the movable cover plate. One end of the spring shaft is coaxially connected to the first bushing. The first spring is sleeved on the spring shaft. The second bushing is sleeved on the end of the first spring away from the first bushing. The second bushing is connected to the pin. The spring shaft has a horizontally extending second strip-shaped hole, and both ends of the pin pass through the first and second strip-shaped holes.

[0014] According to one embodiment of the present invention, the position sensor is disposed on the side of the mounting plate away from the movable cover plate, and is used to detect whether the displacement of the spring shaft reaches a preset value.

[0015] According to one embodiment of the present invention, the device further includes a plurality of stiffening plates, one end of which is connected to the outer bushing, and the stiffening plates are arranged circumferentially on the outer wall of the side plate.

[0016] According to one embodiment of the present invention, the device further includes a controller, wherein the position sensor is connected to the input terminal of the controller, and the output terminal of the controller is connected to the electromagnetic vibrator.

[0017] According to one embodiment of the present invention, it further includes a vibrator bushing, which is mounted on the inner wall of the movable cover plate, and one end of the electromagnetic vibrator is coaxially connected to the vibrator bushing.

[0018] According to one embodiment of the present invention, a plurality of spring wheel assemblies are further included, the spring wheel assemblies being mounted on the bottom of the housing.

[0019] According to one embodiment of the present invention, the spring wheel assembly includes a connecting shaft, a second spring, a connecting plate, a spring wheel sleeve, and a bullseye wheel. The upper end of the connecting shaft is connected to the bottom of the housing, the lower end of the connecting shaft is connected to the top of the connecting plate, the spring wheel sleeve is connected to the bottom of the connecting plate, the axle of the bullseye wheel passes through the bottom of the spring wheel sleeve and is slidably connected along the axial direction, and the second spring is disposed inside the spring wheel sleeve and sleeved on the axle of the bullseye wheel.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The device for relieving assembly stress of idler rollers according to the present invention, by setting an outer bushing and an electromagnetic vibrator, the outer bushing can clamp the idler roller after the cylinder is installed, and the electromagnetic vibrator releases the vibration load on the idler roller. Under the action of vibration, the assembly stress inside the idler roller is released, and the fit between the various parts is more compact and uniform, thereby reducing the rotational resistance of the idler roller.

[0022] 2. The movable cover plate in the device of the present invention opens and closes via a hinge, providing a certain amount of space for vibration to strike the end of the idler roller shaft. It can quickly achieve axial clamping in conjunction with the clamping cylinder. It is suitable for idler rollers of different lengths and specifications, and has good versatility and adaptability.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0025] Figure 1 This is a schematic diagram of the structure of a device for relieving assembly stress of a vibration-assisted idler roller according to an embodiment of the present invention.

[0026] Figure 2 This is a front view of a device for relieving assembly stress of idler rollers through vibration, according to an embodiment of the present invention.

[0027] Figure 3 This is a left view of a device for relieving assembly stress of idler rollers through vibration, according to an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the internal structure of a device for relieving assembly stress of a vibration-assisted idler roller in one embodiment of the present invention.

[0029] Figure 5This is a schematic diagram of the structure of the box in one embodiment of the present invention.

[0030] Figure 6 This is a front view of the box body in one embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram showing the connection between the movable cover plate and the electromagnetic vibrator in one embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram of the spring wheel assembly in one embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram of the first working state of the device for relieving assembly stress of the idler roller according to an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the second working state of the device for relieving assembly stress of the idler roller in one embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Box body, 2-Modible cover plate, 3-Electromagnetic vibrator, 4-Hinge, 5-First spring, 6-Second bushing, 7-Pin, 8-Mounting plate, 9-Spring wheel assembly, 10-Position sensor, 11-Frame, 12-Top plate, 13-Bottom plate, 14-Front plate, 15-Rear plate, 16-Side plate, 17-Outer bushing, 18-Firming plate, 20-Vibrator bushing, 22-First bushing, 23-Spring shaft, 24-Connecting shaft, 26-Connecting plate, 27-Spring wheel bushing, 28-Bullseye wheel, 50-Idler roller, 51-Idler roller shaft. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0038] The following is for reference. Figures 1 to 10 This describes an apparatus for relieving vibration stress in idler roller assembly according to an embodiment of the present invention.

[0039] Combination Figures 1 to 5 As shown, the device for relieving assembly stress of the vibration-relieving idler roller according to an embodiment of the present invention includes a housing 1, a movable cover plate 2, an electromagnetic vibrator 3, a buffer assembly, and a position sensor 10.

[0040] The housing is the main structure of the entire device, providing installation space for other components. One end of the housing 1 has a side plate 16, on which an outer bushing 17 is mounted. The outer bushing 17 is used to mount the clamping cylinder. The outer bushing 17 is the interface for the clamping cylinder. The clamping cylinder is a component on other equipment. For example, the clamping cylinder is a component on the idler roller assembly line, specifically a clamping cylinder on the idler roller vibration running-in equipment. A movable cover plate 2 is located at the end of the housing 1 away from the side plate 16. The movable cover plate 2 is hinged to the housing 1, and its outer wall abuts against the end of the idler roller. The movable cover plate 2 can withstand the axial pressure of the idler roller and moves to one side of the side plate 16 under the action of axial pressure. An electromagnetic vibrator 3 is located inside the housing 1. One end of the electromagnetic vibrator 3 is connected to the movable cover plate 2 and is used to drive the movable cover plate 2 to vibrate, thereby applying a vibration load to the idler roller in the clamped state. The electromagnetic vibrator 3 is an electromechanical device that generates periodic vibrations using the principle of electromagnetic induction, converting electrical energy into mechanical vibration energy. A buffer assembly is housed within the housing 1, providing elastic support for the movable cover plate 2. The buffer assembly has elastic damping, absorbing some vibration energy, mitigating impact, and extending the device's service life. A position sensor 10 detects the displacement of the buffer assembly. When the detected displacement reaches a preset value, it determines that the idler roller has been installed and clamped, and the electromagnetic vibrator 3 is activated. The specific type of position sensor 10 can be set according to actual needs and is not limited thereto. For example, the position sensor 10 can be a photoelectric switch, proximity switch, etc.

[0041] Combination Figure 9 and Figure 10 As shown, the vibration-relieving idler roller assembly stress device of this embodiment is used in pairs during operation, with an axial clamping cylinder mounted on the outer bushing 17. The movable cover plate 2 is arranged opposite to the idler roller 50, specifically, the idler roller shaft 51 is opposite to the movable cover plate 2. After the clamping cylinder axially presses the device, the distance between the movable cover plate 2 and the idler roller shaft 51 gradually decreases. When the movable cover plate 2 touches the shaft end of the idler roller shaft 51 and shifts, and the displacement reaches a preset value, the electromagnetic vibrator 3 is activated, vibrating and striking the movable cover plate 2 at a preset frequency and amplitude. Under the action of vibration, the assembly stress inside the idler roller is released.

[0042] According to an embodiment of the present invention, the device for relieving assembly stress of a roller by vibration is provided by setting an outer bushing and an electromagnetic vibrator. After the cylinder is installed on the outer bushing, the roller can be clamped. The electromagnetic vibrator releases the vibration load on the roller. Under the action of vibration, the assembly stress inside the roller is released, and the fit between the components is more compact and uniform, thereby reducing the rotational resistance of the roller.

[0043] In some embodiments, combined with Figure 3 and Figure 5As shown, the device for releasing the assembly stress of the vibration-relieving idler roller also includes hinges 4. The housing 1 includes a frame 11, a top plate 12, a bottom plate 13, a front plate 14, and a rear plate 15. The top plate 12 and the bottom plate 13 are respectively connected to the top and bottom of the frame 11. One end of the top plate 12 extends to the side of the frame 11 and has an opening. There are two hinges 4, one end of which is installed in the opening, and the other end of which is connected to the top of the movable cover plate 2. The front plate 14 and the rear plate 15 are respectively connected to the front and rear of the frame 11. The material of the frame 11 is selected according to actual needs. For example, the frame 11 is welded from square steel. The top plate 12, bottom plate 13, front plate 14, rear plate 15, and side plate 16 are all welded from the frame 11, resulting in high structural strength. The movable cover plate 2 rotates around the hinges 4.

[0044] Combination Figure 1 , Figure 2 and Figure 7 As shown, the buffer assembly includes a first spring 5, a first bushing 22, a second bushing 6, a spring shaft 23, a pin 7, and mounting plates 8. There are two mounting plates 8, which are fixed to the base plate 13 and arranged opposite each other in the front-to-back direction. Each mounting plate 8 has a vertically extending first strip-shaped hole. The first bushing 22 is connected to the inner wall of the movable cover plate 2. One end of the spring shaft 23 is coaxially connected to the first bushing 22. The first spring 5 is sleeved on the spring shaft 23. The second bushing 6 is sleeved on the end of the first spring 5 away from the first bushing 22 and is connected to the pin 7. The spring shaft 23 has a horizontally extending second strip-shaped hole. Both ends of the pin 7 pass through the first and second strip-shaped holes. The pin 7 can move relative to the first and second strip-shaped holes, allowing the spring shaft 23 to perform an arc motion around the hinge 4. The number of buffer assemblies is set according to actual needs and is not limited. For example, there are two buffer assemblies arranged below the electromagnetic vibrator 3.

[0045] The device for relieving assembly stress of the vibration-assisted idler roller also includes a controller. A position sensor 10 is connected to the input of the controller, and the output of the controller is connected to the electromagnetic vibrator 3. The type of controller is selected according to actual needs; for example, a PLC controller can be used. The position sensor 10 is located on the side of the mounting plate 8 away from the movable cover plate 2 and is used to detect whether the displacement of the spring shaft 23 reaches a preset value. When the movable cover plate 2 moves, it drives the spring shaft 23 to move, and the end of the spring shaft 23 enters the detection range of the position sensor 10. The position sensor 10 then outputs a signal to the controller, which energizes the electromagnetic vibrator 3 to start vibration. The frequency, amplitude, and operating time of the electromagnetic vibrator 3 can be set according to time requirements and are not limited thereto.

[0046] like Figure 1As shown, the device for relieving assembly stress of the vibration idler roller also includes multiple stiffening plates 18, the number of which is selected according to actual needs. One end of the stiffening plate 18 is connected to the outer bushing 17, and the stiffening plates 18 are arranged circumferentially on the outer wall of the side plate 16 along the outer bushing 17, which can enhance the structural strength of the outer bushing 17.

[0047] like Figure 7 As shown, the device for relieving assembly stress of the vibratory idler roller also includes a vibrator bushing 20, which is installed on the inner wall of the movable cover plate 2. One end of the electromagnetic vibrator 3 is coaxially connected to the vibrator bushing 20. The vibrator bushing 20 can be welded to the movable cover plate 2.

[0048] Combination Figure 1 and Figure 8 As shown, the device for relieving vibration stress on the idler roller assembly also includes multiple spring wheel assemblies 9, which are installed at the bottom of the housing 1. There are four spring wheel assemblies 9. The spring wheel assemblies 9 are used to support the housing, isolate vibration, and reduce friction with the idler roller vibration running-in equipment body.

[0049] The spring wheel assembly 9 includes a connecting shaft 24, a second spring, a connecting plate 26, a spring wheel sleeve 27, and a bullseye wheel 28. The upper end of the connecting shaft 24 is connected to the bottom of the housing 1, and the lower end of the connecting shaft 24 is connected to the top of the connecting plate 26. The spring wheel sleeve 27 is connected to the bottom of the connecting plate 26. The axle of the bullseye wheel 28 passes through the bottom of the spring wheel sleeve 27 and can slide axially. The second spring is located inside the spring wheel sleeve 27 and is sleeved on the axle of the bullseye wheel 28.

[0050] Combination Figure 9 and Figure 10 As shown, the operation steps of the device for relieving vibration stress in idler roller assembly according to an embodiment of the present invention are as follows:

[0051] Step 1: After the idler rollers are assembled, they are transported to the idler roller vibration running-in equipment station. After the idler rollers are in place, the running-in begins. The axial clamping cylinders on the left and right sides of the idler roller vibration running-in equipment drive the device of this embodiment to approach the two shaft ends of the idler rollers that are running in.

[0052] Step 2: When the movable cover plate 2 in the device of this embodiment of the invention touches the shaft ends on both sides of the running idler roller, the position sensor 10 sends a signal to the controller. The controller vibrates and taps the shaft ends on both sides of the running idler roller at a frequency and amplitude preset by the operator. During the vibration, the position of the device of this embodiment of the invention is as follows: Figure 9 , Figure 10 The reciprocating vibration shown is used to vibrate and strike the shaft ends on both sides of the running-in idler roller.

[0053] Step 3: When the preset vibration time is reached, the electromagnetic vibrator 3 stops vibrating, and the axial clamping cylinders on the left and right sides of the idler roller vibration running-in equipment drive the device of this embodiment to return to the starting position. At this time, the assembly stress of the idler roller is released, the rotational resistance is reduced, the idler roller vibration running-in process is completed, and the material can be unloaded for quality inspection.

[0054] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this invention, the terms "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 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.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for relieving assembly stress of a vibration-driven idler roller, characterized in that, include: The box body (1) has a side plate (16) at one end, and an outer bushing (17) on the side plate (16) for installing a clamping cylinder; the box body (1) includes a frame (11), a top plate (12), a bottom plate (13), a front plate (14) and a rear plate (15), the top plate (12) and the bottom plate (13) are respectively connected to the top and bottom of the frame (11), and one end of the top plate (12) extends to the side of the frame (11) and has an opening; A movable cover plate (2) is provided at one end of the housing (1) away from the side plate (16). The movable cover plate (2) is hinged to the housing (1). The outer wall of the movable cover plate (2) is used to abut the end of the idler roller. An electromagnetic vibrator (3) is installed inside the housing (1). One end of the electromagnetic vibrator (3) is connected to the movable cover plate (2) to drive the movable cover plate (2) to vibrate, thereby applying a vibration load to the roller in the clamped state. A buffer assembly, located inside the housing (1), is used to provide elastic support for the movable cover plate (2); The position sensor (10) is used to detect the displacement of the buffer assembly. When the displacement of the buffer assembly reaches a preset value, it is determined that the roller has been installed and clamped and the electromagnetic vibrator (3) is started. A hinge (4) is installed at one end of the opening and the other end of the hinge (4) is connected to the top of the movable cover plate (2); the front plate (14) and the rear plate (15) are respectively connected to the front and rear of the frame (11); The buffer assembly includes a first spring (5), a first bushing (22), a second bushing (6), a spring shaft (23), a pin (7), and a mounting plate (8). There are two mounting plates (8). The mounting plates (8) are fixed on the base plate (13) and are arranged opposite each other in the front-back direction. The mounting plate (8) has a vertically extending first strip hole. The first bushing (22) is connected to the inner wall of the movable cover plate (2). One end of the spring shaft (23) is coaxially connected to the first bushing (22). The first spring (5) is sleeved on the spring shaft (23). The second bushing (6) is sleeved on the end of the first spring (5) away from the first bushing (22). The second bushing (6) is connected to the pin (7). The spring shaft (23) has a horizontally extending second strip hole. Both ends of the pin (7) pass through the first strip hole and the second strip hole.

2. The device for relieving vibration-induced stress in idler roller assembly according to claim 1, characterized in that, The position sensor (10) is located on the side of the mounting plate (8) away from the movable cover plate (2) and is used to detect whether the displacement of the spring shaft (23) reaches a preset value.

3. The device for relieving vibration-induced stress in idler roller assembly according to claim 1, characterized in that, It also includes multiple stiffening plates (18), one end of which is connected to the outer bushing (17), and the stiffening plates (18) are arranged on the outer wall of the side plate (16) along the circumference of the outer bushing (17).

4. The device for relieving vibration-induced stress in idler roller assembly according to claim 1, characterized in that, It also includes a controller, the position sensor (10) is connected to the input of the controller, and the output of the controller is connected to the electromagnetic vibrator (3).

5. The device for relieving vibration-induced stress in idler roller assembly according to claim 1, characterized in that, It also includes a vibrator bushing (20), which is installed on the inner wall of the movable cover plate (2), and one end of the electromagnetic vibrator (3) is coaxially connected to the vibrator bushing (20).

6. The device for relieving vibration-induced stress in idler roller assembly according to any one of claims 1 to 5, characterized in that, It also includes multiple spring wheel assemblies (9) mounted on the bottom of the housing (1).

7. The device for relieving vibration-induced stress in idler roller assembly according to claim 6, characterized in that, The spring wheel assembly (9) includes a connecting shaft (24), a second spring, a connecting plate (26), a spring wheel sleeve (27), and a bullseye wheel (28). The upper end of the connecting shaft (24) is connected to the bottom of the housing (1), and the lower end of the connecting shaft (24) is connected to the top of the connecting plate (26). The spring wheel sleeve (27) is connected to the bottom of the connecting plate (26). The axle of the bullseye wheel (28) passes through the bottom of the spring wheel sleeve (27) and can slide along the axial direction. The second spring is located inside the spring wheel sleeve (27) and is sleeved on the axle of the bullseye wheel (28).

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