Variable frequency amplitude modulation vibration excitation device for vibration forming of refractory castable

Abstract

The present application relates to the technical fields of castable vibration forming, in particular to a variable-frequency amplitude modulation excitation device for refractory castable vibration forming, comprising a workbench and a power part installed on the workbench, wherein the power part comprises a bracket fixed on the workbench, a driving part fixed on the inner wall of the bracket, and output shafts arranged at both ends of the driving part, the surface of the output shafts is fixed with fixed plates and movably provided with movable plates, further comprising: a gear slot fixed on the surface of the movable plate, the present application can accurately adjust the angle of the two reference plates through the cooperation of the limiting part and the scale line, at this time the surface gap of the reference plate serves as a reference to assist the staff to determine the rotation angle of the two movable plates, the cooperation of the gear teeth and the gear slot can also preliminarily limit the position of the movable plate, solving the problem that the staff cannot determine the rotation angle of the two movable eccentric blocks when the vibration motor is in use, and the angle deviation of the two eccentric blocks easily affects the normal use of the vibration motor.

Description

Technical Field

[0001] This invention relates to the field of vibration molding technology for refractory castables, specifically a frequency conversion amplitude modulation excitation device for vibration molding of refractory castables. Background Technology

[0002] Castable refractory, also known as refractory castable, is a type of monolithic refractory material formed by casting. In existing technology, the refractory castable is poured into a mold and then vibrated with an immersion vibrator or a plate vibrator until the surface of the castable is slurry, thus expelling air bubbles and voids inside the castable, thereby improving the density of the material and ensuring the molding effect.

[0003] Currently, some plate vibrators provide stable excitation force through vibratory motors mounted on their surfaces. Some vibratory motors have movable eccentric blocks and fixed eccentric blocks on both sides. By adjusting the two movable eccentric blocks, the angle between the movable eccentric block and the fixed block can be changed, thereby changing the combined center of gravity of the two and thus adjusting the amplitude. However, if the movable eccentric blocks on both sides rotate at different angles, the centrifugal forces generated at both ends of the vibratory motor will no longer be in the same plane, thus forcibly twisting the motor shaft and the entire base, and even damaging the bearings and affecting the normal use of the vibratory motor. Summary of the Invention

[0004] The purpose of this invention is to provide a frequency conversion amplitude modulation excitation device for vibration molding of refractory castables. Through the cooperation of the limiting part and the scale line, the angle of the two reference plates can be accurately adjusted. At this time, the notch on the surface of the reference plate serves as a reference, which can help the operator determine the rotation angle of the two movable plates. The tooth and groove cooperation can initially limit the position of the movable plates and prevent the possibility of subsequent displacement of the movable plates. This solves the problem that when the vibratory motor is in use, it is difficult for the operator to determine the rotation angle of the movable eccentric blocks on both sides, and the angle deviation of the eccentric blocks on both sides can easily affect the normal use of the vibratory motor.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a variable frequency amplitude modulation excitation device for vibration molding of refractory castables, comprising a worktable and a power unit mounted on the worktable, the power unit comprising a bracket fixed to the worktable, a driving component fixed to the inner wall of the bracket, and output shafts disposed at both ends of the driving component, wherein a fixed plate is fixed to the surface of the output shaft and a movable plate is movably disposed thereon, and further comprising: The toothed groove is fixed to the surface of the movable plate, and the surface of the fixed plate is provided with teeth, which engage with the toothed groove. An adjustment assembly is provided on the power unit. The adjustment assembly includes a sleeve that is rotatably fitted on the surface of the driving component and a positioning ring that is fixed on the surface of the driving component. A limiting part is provided on the sleeve. The limiting part includes an indicator plate fixed on the top of the sleeve. The surface of the driving component is provided with scale lines. A telescopic part is provided on the bracket, and the telescopic part includes a baffle, one end of which abuts against the surface of the movable plate; A reference plate is rotatably connected to the surface of the baffle, and a force-bearing part is provided between the reference plate and the limiting part.

[0006] Preferably, the limiting part further includes: A hollow frame is fixed to the surface of the sleeve, the hollow frame is connected to the sleeve, and the indicator plate is fixed to the surface of the hollow frame; A bare rod that slides through the top of the hollow frame; The pressing component is fixed to the bottom of the light rod, and the pressing component is engaged with the surface of the positioning ring; The first spring is sleeved on the surface of the smooth rod, and the two ends of the first spring abut against the inner wall of the hollow frame and the top of the pressure member, respectively.

[0007] Preferably, the telescopic part further includes: A guide member, a sliding through-bracket, and a baffle fixed at one end of the guide member; The second spring is located inside the guide member, and its two ends abut against the inner wall of the bracket and the surface of the baffle, respectively.

[0008] Preferably, a triangular plate is fixed to the top of the optical rod, and the force-bearing part includes: L-shaped plate, fixed on the reference plate; A raised plate is fixed to the surface of the L-shaped plate; An inclined plane is set on the surface of the convex plate, and the inclined plane fits into the surface of the triangular plate.

[0009] Preferably, a connector is fixed to the surface of the movable plate, and an anti-detachment groove is formed on the surface of the reference plate, with the connector rotatably disposed inside the anti-detachment groove.

[0010] Preferably, extension members are fixed on both sides of the hollow frame, and the bottom of the L-shaped plate and the convex plate are slidably connected to the top of the extension members.

[0011] Preferably, a slider is fixed to the bottom of the L-shaped plate, and the slider is slidably connected to the interior of the extension.

[0012] Preferably, annular grooves are formed on both sides of the reference plate, and ball bearings are embedded inside the annular grooves. The ball bearings on both sides of the reference plate are in contact with the surfaces of the baffle and the movable plate, respectively.

[0013] Preferably, the surface of the reference plate has a notch for aligning the movable plate.

[0014] Preferably, a bellows cover is fixed between the baffle and the inner wall of the bracket.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the cooperation of the limiting part and the scale line, can accurately adjust the angle of the two reference plates. At this time, the notch on the surface of the reference plate serves as a reference, which can help the operator determine the rotation angle of the two movable plates. Subsequently, pushed by the telescopic part, the reference plate presses the movable plate closer to the fixed plate. The teeth and grooves cooperate to initially restrict the position of the movable plate, preventing the possibility of the movable plate shifting later. Finally, the operator can use bolts to stabilize the connection between the movable plate and the output shaft. This solves the problem that when using a vibratory motor, it is difficult for the operator to determine the rotation angle of the movable eccentric blocks on both sides, and the deviation of the angle of the eccentric blocks on both sides can easily affect the normal use of the vibratory motor. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the power unit and the adjustment group in this invention; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention, showing the sleeve cut open and the fixed plate and movable plate separated. Figure 5 This is a three-dimensional structural diagram of the present invention, showing the removal of the force-bearing part and the cutting open of the hollow frame. Figure 6 This is a three-dimensional structural diagram of the present invention with the telescopic part disassembled and the reference plate and hollow frame cut apart; Figure 7 This is a schematic diagram of the partial explosion three-dimensional structure of the present invention; Figure 8 This is a three-dimensional structural diagram of the present invention with the fixed plate, movable plate, reference plate and telescopic part disassembled; Figure 9 For the present invention Figure 4 Enlarged structural diagram at point A; Figure 10 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 11 For the present invention Figure 5 Enlarged structural diagram at point C; Figure 12 For the present invention Figure 6 A magnified structural diagram at point D.

[0017] In the diagram: 100, Power unit; 110, Drive unit; 120, Output shaft; 130, Fixed plate; 140, Movable plate; 150, Gear; 160, Gear groove; 170, Connector; 180, Bracket; 200, Adjustment group; 210, Sleeve; 220, Positioning ring; 230, Limiting part; 231, Hollow frame; 232, Smooth rod; 233, Pressing part; 234, Triangular plate; 235, First spring; 236, Indicator plate; 240, Extension part; 250, Force-bearing part; 251, L-shaped plate; 252, Convex plate; 253, Slider; 260, Reference plate; 270, Telescopic part; 271, Guide part; 272, Baffle; 273, Second spring; 274, Bellows cover; 280, Annular groove; 290, Ball bearing; 300, Anti-detachment groove; 400, Worktable. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-12A variable frequency amplitude modulation excitation device for vibration molding of refractory castables includes a worktable 400 and a power unit 100 mounted on the worktable 400. The power unit 100 includes a bracket 180 fixed on the worktable 400, a drive component 110 fixed on the inner wall of the bracket 180, and output shafts 120 disposed at both ends of the drive component 110. The end of the output shaft 120 away from the drive component 110 is rotatably connected to the inner wall of the bracket 180. A fixed plate 130 is fixed on the surface of the output shaft 120, and a movable plate 140 is movably disposed thereon. The surface of the movable plate 140 is fixed with a toothed groove 160, and the surface of the fixed plate 130 is provided with teeth 150. When the movable plate 140 is adjusted in angle, it moves away from the fixed plate 130, and then the movable plate 140 is fitted and fixed. On the surface of plate 130, teeth 150 and grooves 160 engage to limit the rotation angle of movable plate 140, thus initially limiting its position. Bolts are provided on the surface of movable plate 140; by tightening these bolts, the operator can stably fix movable plate 140 to the surface of output shaft 120. At this point, the positions of movable plate 140 and fixed plate 130 are fixed. Rotation of output shaft 120 will drive both fixed plate 130 and movable plate 140 to rotate simultaneously. The operator can adjust the rotation angle of movable plate 140 as needed to adjust the amplitude of the subsequent power unit 100. The power unit 100 is equipped with an adjustment group 200, which includes a sleeve 210 rotatably fitted onto the surface of drive component 110 and a sleeve fixed to the surface of the drive component 110. The positioning ring 220 on the surface of the driving component 110 is rotatably fitted onto the surface of the positioning ring 220, which can cover and protect the positioning ring 220. The positioning ring 220 can limit the rotational position of the sleeve 210. The sleeve 210 is provided with a limiting part 230, which includes a hollow frame 231 fixed to the surface of the sleeve 210 and communicating with the sleeve 210. A smooth rod 232 slides through the top of the hollow frame 231, and a pressing member 233 is fixed to the bottom of the smooth rod 232. The pressing member 233 engages with the surface of the positioning ring 220 to limit the rotation angle of the hollow frame 231. A first spring 235 is fitted onto the surface of the smooth rod 232. The two ends of the first spring 235 are respectively connected to the inner wall of the hollow frame 231 and the pressing member 232. The top of the 33 abuts against the first spring 235, which helps the pressing member 233 engage with the positioning ring 220. Indicator plates 236 are fixed to both sides of the hollow frame 231. The surface of the driving member 110 has scale lines. The indicator plate 236 is fixed to the top of the sleeve 210. The end of the indicator plate 236 away from the hollow frame 231 contacts the surface of the power unit 100 and can be used to point to the scale lines. A telescopic part 270 is provided on the bracket 180. The telescopic part 270 includes a guide member 271 that slides through the bracket 180, a baffle 272 fixed to one end of the guide member 271, and a second spring 273 disposed inside the guide member 271. The two ends of the second spring 273 abut against the inner wall of the bracket 180 and the surface of the baffle 272, respectively.A bellows cover 274 is fixed between the baffle 272 and the inner wall of the bracket 180. The bellows cover 274 cooperates with the baffle 272 to cover and protect the second spring 273. One end of the baffle 272 abuts against the surface of the movable plate 140. A reference plate 260 is rotatably connected to the surface of the baffle 272. A force-bearing part 250 is provided between the reference plate 260 and the limiting part 230. The force-bearing part 250 includes an L-shaped plate 251 fixed on the reference plate 260 and a convex plate 252 fixed on the surface of the L-shaped plate 251. A triangular plate 234 is fixed to the top of the guide rod 232. The surfaces of the two convex plates 252 are provided with inclined surfaces, which fit against the surface of the triangular plate 234. The operator pulls the triangular plate 234 upward and moves the lower pressing part 233 through the guide rod 232. When the connection between the guide rod 232 and the positioning ring 220 is released, the triangular plate 234 moves, pressing the convex plate 252 to move. This, in turn, drives the reference plate 260 to move laterally via the L-shaped plate 251. At this time, the baffle 272 moves under force, releasing the pressure on the movable plate 140. The operator can then rotate the movable plate 140 by turning the screw to adjust its angle. Subsequently, under the force of the second spring 273, the baffle 272 presses against the movable plate 140 and the reference plate 260, resetting the force-bearing part 250 and the limiting part 230. The teeth 150 and the grooves 160 engage, initially limiting the rotation angle of the movable plate 140. The operator can then use bolts to secure the stability of the movable plate 140 on the output shaft 120.

[0020] A connector 170 is fixed to the surface of the movable plate 140, and an anti-detachment groove 300 is formed on the surface of the base plate 260. The connector 170 is rotatably disposed inside the anti-detachment groove 300. The anti-detachment groove 300 can connect the movable plate 140 and the base plate 260. When the movable plate 140 rotates with the output shaft 120, the base plate 260 can remain stable. When the base plate 260 is squeezed and moves laterally, the connector 170 can drive the movable plate 140 to move, thereby quickly releasing the contact between the fixed plate 130 and the movable plate 140. The operator can then rotate the movable plate 140 to adjust its angle. When the limiting part 230 rotates, the angles of the extension part 240 and the force-bearing part 250 are adjusted accordingly. At this time, the reference plate 260 rotates. The operator can accurately adjust the angle of the reference plate 260 by cooperating with the indicator plate 236 and the scale line. The surface of the reference plate 260 has a notch. The operator aligns the opening of the movable plate 140 with the notch of the reference plate 260. The notch of the reference plate 260 can be used by the operator to refer to and adjust the angle of the movable plate 140.

[0021] Extensions 240 are fixed to both sides of the hollow frame 231. The bottoms of the L-shaped plate 251 and the convex plate 252 are slidably connected to the top of the extensions 240. The extensions 240 can support the two and increase their stability during movement. A slider 253 is fixed to the bottom of the L-shaped plate 251. The slider 253 is slidably connected to the inside of the extensions 240, thereby providing stable guidance for the movement of the L-shaped plate 251 and the convex plate 252.

[0022] Annular grooves 280 are provided on both sides of the reference plate 260. Ball bearings 290 are embedded in the annular grooves 280. The ball bearings on both sides of the reference plate 260 contact the surfaces of the baffle 272 and the movable plate 140 respectively, thereby increasing the smoothness of the reference plate 260 when rotating between the baffle 272 and the movable plate 140.

[0023] Working principle: The operator places the mold containing the refractory castable on the workbench 400 and turns on the drive unit 110. The output shaft 120 drives the fixed plate 130 and the movable plate 140 to rotate. The rotation of the fixed plate 130 and the movable plate 140 generates a periodically changing centrifugal force, which forms an excitation force and is transmitted to the workbench 400 through the bracket 180. In this way, the refractory castable in the mold is formed by the excitation force. When amplitude adjustment is needed, the operator can, with the drive unit 110 stopped, first unscrew the screws on the movable plate 140 to disconnect its stable connection with the output shaft 120, then pull the triangular plate 234. The triangular plate 234 will then lift the guide rod 232 and the pressing member 233. After disconnecting the guide rod 232 from the positioning ring 220, the operator can pull the triangular plate 234 to rotate. The sleeve 210, the force-bearing part 250, and the reference plate 260 will rotate as a whole. During this process, the movement of the triangular plate 234 will press the convex plate 252 to move, thereby pushing the reference plate 260 to move via the L-shaped plate 251. The reference plate 260 then drives... The movable plate 140 moves away from the fixed plate 130. At this time, the operator rotates the movable plate 140 and aligns the opening of the movable plate 140 with the notch on the surface of the reference plate 260. Then, the operator stops pulling the triangular plate 234, and the limiting part 230 and the force-bearing part 250 are reset. The reference plate 260 is reset by the pressure of the baffle 272. The movable plate 140 moves in the direction of the fixed plate 130, and the teeth 150 and the grooves 160 engage, which initially restricts the position of the movable plate 140. After that, the operator tightens the bolts to stabilize the angle of the movable plate 140. Based on this, the movable plates 140 on both sides can be adjusted at the same angle, which can reduce the subsequent debugging time and improve the overall work efficiency.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable frequency amplitude modulation excitation device for vibration molding of refractory castable, comprising a worktable (400) and a power unit (100) mounted on the worktable (400), wherein the power unit (100) comprises a bracket (180) fixed on the worktable (400), a drive member (110) fixed on the inner wall of the bracket (180), and output shafts (120) disposed at both ends of the drive member (110), wherein a fixed plate (130) is fixed to the surface of the output shaft (120) and a movable plate (140) is movably disposed thereon, characterized in that, Also includes: The tooth groove (160) is fixed on the surface of the movable plate (140), and the fixed plate (130) has teeth (150) on its surface, which engage with the tooth groove (160). An adjustment assembly (200) is provided on the power unit (100). The adjustment assembly (200) includes a sleeve (210) rotatably sleeved on the surface of the drive member (110) and a positioning ring (220) fixed on the surface of the drive member (110). A limiting part (230) is provided on the sleeve (210). The limiting part (230) includes an indicator plate (236) fixed on the top of the sleeve (210). The surface of the drive member (110) is provided with scale lines. A telescopic part (270) is provided on the bracket (180), the telescopic part (270) includes a baffle (272), one end of the baffle (272) abuts against the surface of the movable plate (140); A reference plate (260) is rotatably connected to the surface of a baffle (272), and a force-bearing part (250) is provided between the reference plate (260) and the limiting part (230).

2. The variable frequency amplitude modulation excitation device for vibration molding of refractory castables according to claim 1, characterized in that, The limiting part (230) also includes: A hollow frame (231) is fixed on the surface of a sleeve (210), the hollow frame (231) is connected to the sleeve (210), and the indicator plate (236) is fixed on the surface of the hollow frame (231); The bare rod (232) slides through the top of the hollow frame (231); The pressing member (233) is fixed to the bottom of the light rod (232), and the pressing member (233) is engaged with the surface of the positioning ring (220); The first spring (235) is sleeved on the surface of the smooth rod (232), and the two ends of the first spring (235) abut against the inner wall of the hollow frame (231) and the top of the pressure member (233), respectively.

3. The variable frequency amplitude modulation excitation device for vibration molding of refractory castables according to claim 1, characterized in that, The telescopic part (270) also includes: Guide (271), sliding through bracket (180), the baffle (272) is fixed to one end of guide (271); The second spring (273) is disposed inside the guide (271), and the two ends of the second spring (273) abut against the inner wall of the bracket (180) and the surface of the baffle (272), respectively.

4. The variable frequency amplitude modulation excitation device for vibration molding of refractory castables according to claim 2, characterized in that, A triangular plate (234) is fixed to the top of the optical rod (232), and the force-bearing part (250) includes: L-shaped plate (251) is fixed on the reference plate (260); A protruding plate (252) is fixed to the surface of an L-shaped plate (251); An inclined plane is set on the surface of the convex plate (252), and the inclined plane is in contact with the surface of the triangular plate (234).

5. The frequency conversion amplitude modulation excitation device for vibration molding of refractory castables according to claim 1, characterized in that: The surface of the movable plate (140) is fixed with a connector (170), and the surface of the reference plate (260) is provided with an anti-detachment groove (300). The connector (170) is rotatably disposed inside the anti-detachment groove (300).

6. The frequency conversion amplitude modulation excitation device for vibration molding of refractory castables according to claim 4, characterized in that: The hollow frame (231) has extensions (240) fixed on both sides of its surface, and the bottoms of the L-shaped plate (251) and the convex plate (252) are slidably connected to the top of the extensions (240).

7. The frequency conversion amplitude modulation excitation device for vibration molding of refractory castables according to claim 6, characterized in that: The bottom of the L-shaped plate (251) is fixed with a slider (253), which is slidably connected to the interior of the extension (240).

8. The frequency conversion amplitude modulation excitation device for vibration molding of refractory castables according to claim 1, characterized in that: The reference plate (260) has annular grooves (280) on both sides of its surface. Ball bearings (290) are embedded in the annular grooves (280). The ball bearings (290) on both sides of the reference plate (260) are in contact with the surfaces of the baffle (272) and the movable plate (140), respectively.

9. The frequency conversion amplitude modulation excitation device for vibration molding of refractory castables according to claim 1, characterized in that: The surface of the reference plate (260) has a notch for aligning the movable plate (140).

10. A variable frequency amplitude modulation excitation device for vibration molding of refractory castables according to claim 1, characterized in that: A bellows cover (274) is fixed between the baffle (272) and the inner wall of the bracket (180).

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