A mixer tipping mechanism

Abstract

The utility model relates to a mixer tipping unloading technical field, concretely relates to a mixer tipping unloading mechanism. Including frame and turning over material department, the frame top rotatable installation has the hopper through the slewing bearing, is equipped with the stirring subassembly in the hopper. Turning over material department includes the drive swing bar welded in the hopper lateral wall, its end hinged connecting rod, connecting rod other end hinged gyro wheel, the frame corresponding side is equipped with the U type limiting slot of vertical extension, and the gyro wheel is embedded therein and can slide, the U type limiting slot lateral wall is inwards inclined 5~10, and the wedge shape clamping cooperation is formed with the gyro wheel, turning over material department still is equipped with the fender, is equipped with the limiting frame on it, and limiting frame is slidably installed in the fender through the limiting shaft, and is by spring pre -tensioned, is equipped with two clamping slots on the fender, and the gyro wheel or connecting pin shaft can be embedded clamping slot and realize the positioning locking, is equipped with the guide camber between two clamping slots. The mechanism operation laborsaving, running smoothly, positioning accurate, can effectively prevent the hopper accidental overturning, promotes the security and the operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mixer tilting and unloading technology, specifically to a mixer tilting and unloading mechanism. Background Technology

[0002] Mixers are commonly used in industries such as chemical, building materials, and food to mix materials. After mixing is complete, the material in the hopper needs to be poured out. To facilitate unloading, some mixers will tilt the entire hopper to empty the material completely. This tilting is usually done manually; it is simple in structure and low in cost.

[0003] However, existing manual material turning methods have several problems. For example, some methods involve manually turning the hopper, which is not only laborious but also unstable, easily leading to overturning and posing a safety hazard. Others, while incorporating levers, lack guiding devices, causing the hopper to wobble or jam during turning, affecting usability. Furthermore, many designs lack positioning functions, preventing the hopper from accurately stopping at the loading or unloading position, leading to displacement and material spillage. Still others lack limit switches, meaning that even when temporarily stopped, the hopper may slide due to vibration or material weight, posing a safety risk.

[0004] Therefore, a simple and practical tipping mechanism is needed that is easy to operate, allows for a smooth tipping process, and can stop steadily in the required position, ensuring safe and reliable use. Utility Model Content

[0005] The purpose of this invention is to provide a tilting and unloading mechanism for a mixer to solve the problems mentioned in the background art, such as the laborious manual tilting operation and the unstable tilting process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tilting and unloading mechanism for a mixer includes a frame and a tilting section. A hopper is rotatably mounted on the top of the frame via a slewing bearing or bearing assembly. The hopper contains a stirring paddle or a spiral stirring assembly. The tilting section is located on one side of the frame and includes a drive lever welded to the side wall of the hopper. One end of the drive lever is hinged to a connecting rod, and the other end of the connecting rod is hinged to a roller. A vertically extending U-shaped limiting groove is provided on the corresponding side of the frame. The roller is embedded in the U-shaped limiting groove and can slide along it. The U-shaped limiting groove is equipped with a limiting mechanism to lock the roller in a preset position, thereby limiting the tilting angle of the hopper. The drive lever rotates synchronously with the hopper to drive the connecting rod to push the roller within the U-shaped limiting groove, thus achieving the tilting and unloading of the hopper.

[0008] Furthermore, the drive lever is welded and fixed to the extended end of the rotating main shaft of the hopper and rotates synchronously with the main shaft; the free end of the drive lever is provided with a spherical handle for easy manual operation.

[0009] Furthermore, the two sidewalls of the U-shaped limiting groove are inclined inward by 5° to 10° to form a wedge-shaped clamping fit with the outer circumferential surface of the roller, providing radial clamping force.

[0010] Furthermore, the turning section also includes a stop block fixed to the frame, and the stop block is provided with a forward-extending limiting frame; two parallel limiting shafts are fixed to the stop block and pass laterally through the limiting frame, so that the limiting frame can slide horizontally along the limiting shafts.

[0011] Furthermore, the turning part also includes a spring, which is fitted on the limiting shaft, with one end abutting against the limiting frame and the other end abutting against the stop block or the frame, for applying a preload force to the limiting frame in the direction of the U-shaped limiting groove.

[0012] Furthermore, the stop block is provided with at least one slot, the position of which corresponds to the predetermined flipping angle of the hopper. When the hopper flips to the corresponding position, the roller or connecting pin of the connecting rod is embedded in the slot to achieve position locking.

[0013] Furthermore, the card slot is provided in two places, which are located at different heights, corresponding to the horizontal loading position and the inclined unloading position of the hopper, and are used to limit and position the connecting rod at the corresponding positions.

[0014] Furthermore, the side of the stop block is provided with a guide arc surface in the area between the two slots to guide the roller to smoothly transition and accurately enter the corresponding slot.

[0015] The advantages of the mixer tilting and unloading mechanism described in this utility model compared to the prior art are as follows:

[0016] By incorporating a mechanical linkage structure consisting of a drive lever, connecting rod, rollers, and a U-shaped limiting groove on the frame, smooth operation and reliable positioning of the hopper tilting are achieved. During operation, simply moving the drive lever causes the connecting rod to push the rollers along the U-shaped limiting groove, easily tilting the hopper with minimal effort and smooth movement. The U-shaped limiting groove effectively guides the rollers' movement, preventing wobbling or jamming during tilting and ensuring more stable operation. Simultaneously, the rollers are fixed in place by the limiting structure after reaching the predetermined position, ensuring the hopper stops accurately at the loading or unloading angle, preventing displacement due to vibration or gravity, thus improving safety and operational accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application;

[0018] Figure 2 This is a schematic diagram of the overall structure of this application;

[0019] Figure 3 This is a schematic diagram of the overall hopper tilting structure of this application;

[0020] Figure 4 This is a schematic diagram of the overall rotating hopper structure of this application;

[0021] Figure 5 This is a schematic diagram of the hopper structure in this application;

[0022] Figure 6 This is a schematic diagram of the connection structure between the stop block and the U-shaped limiting groove in this application.

[0023] The attached diagram shows the following markings and corresponding component names: 1-Frame, 101-Hopper, 2-Tilting section, 201-Drive swing arm, 202-Connecting rod, 203-Roller, 204-U-shaped limiting groove, 205-Limiting shaft, 206-Stop block, 207-Limiting frame, 208-Card slot, 209-Guide arc surface, 210-Pull rod, 211-Spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Example:

[0026] refer to Figures 1-6 This embodiment provides a tilting and unloading mechanism for a mixer, including a frame 1 and a tilting section 2 disposed on one side thereon. The frame 1 is an integral welded steel structure, possessing high strength and stability. A hopper 101 is rotatably mounted on the top of the frame 1 via a slewing bearing (or rolling bearing assembly), and the hopper 101 can tilt in a vertical plane around its main rotation axis. The hopper 101 is equipped with a stirring paddle or a spiral stirring assembly (not shown in the figure) for mixing and stirring the materials.

[0027] The tilting unit 2 is located on one side of the frame 1 and is used to drive the hopper 101 to complete the tilting and unloading action. The tilting unit 2 includes a drive swing rod 201, which is a metal rod. One end of the drive swing rod is welded and fixed to the side wall of the hopper 101, or more preferably, it is welded and fixed to the extended end of the rotating main shaft of the hopper to ensure that it rotates synchronously with the hopper.

[0028] The free end of the drive lever 201 is hinged to a connecting rod 202 via a pin, and the other end of the connecting rod 202 is also hinged to a roller 203 via a pin. The roller 203 is a metal wheel with a wear-resistant rubber layer on its outer circumference to reduce frictional damage with the limiting groove.

[0029] A vertically extending U-shaped limiting groove 204 is provided on the corresponding side of the frame 1. The limiting groove is formed by bending and welding two parallel steel plates, and the cross-section is "U". The roller 203 is embedded in it and can slide up and down along the groove. The length direction of the U-shaped limiting groove 204 matches the tipping trajectory of the hopper, thus limiting the movement path of the roller 203.

[0030] When the operator moves the drive lever 201, the drive lever drives the connecting rod 202 to move, pushing the roller 203 to slide within the U-shaped limiting groove 204, thereby driving the hopper 101 to rotate around the main shaft and achieve smooth tipping. After unloading is completed, the hopper can be reset by reversing the operation.

[0031] The U-shaped limiting groove 204 is equipped with a limiting mechanism (such as a slot, pin, or spring locking device) to lock the roller 203 in a preset position (such as a horizontal loading position or an inclined unloading position), thereby limiting the flipping angle of the hopper 101, preventing it from rotating due to gravity or vibration, and ensuring operational safety.

[0032] By setting up a mechanical linkage structure consisting of a drive lever 201, a connecting rod 202, a roller 203, and a U-shaped limiting groove 204, the hopper tilting operation is made labor-saving and stable, avoiding the problems of laborious and large shaking caused by traditional manual hopper operation. The U-shaped limiting groove effectively guides the movement of the roller, preventing the hopper from jamming or swaying during the tilting process, thus improving operational stability. In conjunction with the limiting mechanism, the hopper can be accurately locked at the loading or unloading position, preventing accidental tilting due to vibration or material weight.

[0033] Furthermore, the drive lever 201 is welded and fixed to the extended end of the rotating main shaft of the hopper 101, and rotates synchronously with the main shaft. Specifically, one end of the drive lever 201 is firmly connected to the extended part of the main shaft through a high-strength welding process to ensure that it can withstand a large operating torque without loosening or deformation.

[0034] The drive lever 201 is a metal rod, preferably made of high-strength alloy steel, possessing sufficient rigidity and fatigue resistance to withstand long-term, frequent operation. For ease of manual operation, a spherical handle is provided at the free end of the drive lever 201. This spherical handle is a smooth-surfaced sphere made of metal or engineering plastic, with a moderate diameter (typically 50mm–80mm), facilitating grip and force application by the operator.

[0035] In actual operation, the operator only needs to hold the ball handle and apply appropriate torque to drive the drive lever 201 to rotate around the main shaft of the hopper, and then push the roller 203 to slide in the U-shaped limiting groove 204 through the connecting rod 202, so as to realize the smooth tilting and unloading of the hopper 101.

[0036] Furthermore, the two sidewalls of the U-shaped limiting groove 204 are inclined inward at 5° to 10°, preferably 5°, forming a wedge-shaped guide channel that is wider at the top and narrower at the bottom. This inclined structure is achieved by milling or bending the inner edges of the two parallel steel plates during the machining of the limiting groove.

[0037] The outer circumferential surface of the roller 203 is a cylindrical surface or a slightly convex curved surface, with a diameter slightly smaller than the width of the upper opening of the U-shaped limiting groove 204, but larger than the minimum gap at the lower opening. When the roller 203 is embedded in the U-shaped limiting groove 204 and slides along it, its outer circumferential surface always remains in contact or nearly in contact with the inclined walls on both sides as the position of the roller changes.

[0038] Because the sidewalls are inclined inward, the roller 203 will naturally tend to move towards the bottom of the groove under the action of gravity or the thrust of the connecting rod. At this time, the two sidewalls apply inward radial pressure to the roller, forming a wedge-shaped clamping fit. This fit generates a certain radial clamping force between the roller and the limiting groove, effectively limiting the horizontal sway of the roller and improving the stability of the motion guidance.

[0039] Especially when the hopper 101 is in the inclined unloading position, the roller 203 is located in the lower area of ​​the U-shaped limiting groove 204, and the inclined walls on both sides have the strongest clamping effect on it, which can effectively prevent the roller from swinging or jumping laterally due to the weight of the material or vibration, and ensure that the hopper is stably stopped at the predetermined angle.

[0040] In addition, the wedge structure has a certain self-centering function. Even if the roller is slightly offset during initial installation, it can automatically adjust its position during sliding to make it run smoothly along the center line and reduce the risk of jamming.

[0041] In this embodiment, the material turning section 2 also includes a stop block 206 fixed to the frame 1. The stop block is a metal block that is firmly installed on the side of the frame 1 by bolts or welding, located outside the U-shaped limiting groove 204 or in the extending direction, serving as the supporting base of the limiting structure.

[0042] The stop block 206 is provided with a forward-extending limiting frame 207, which is a U-shaped or fork-shaped metal component with its front opening facing the U-shaped limiting groove 204. Two parallel limiting shafts 205 are fixed to the stop block 206 and pass laterally through the two side arms of the limiting frame 207, so that the limiting frame 207 can slide horizontally along the limiting shafts 205.

[0043] Specifically, the limiting shaft 205 is a cylindrical metal shaft, with both ends fixed in the mounting holes of the stop block 206, which can be fixed by interference fit or nut locking. The two arms of the limiting frame 207 have through holes, which are fitted onto the limiting shaft 205 to form a sliding pair. The sliding direction is horizontal (i.e., perpendicular to the hopper tilting plane), allowing the limiting frame 207 to move left and right within a certain stroke.

[0044] This structure provides the motion basis for the subsequent limit locking mechanism. When the hopper 101 tilts to the predetermined position, the connecting rod 202 drives the roller 203 or the connecting pin to enter the front end area of ​​the limit frame 207. The limit frame 207 can slide inward under the action of external force (such as spring preload) to clamp or lock the roller or pin, thereby stably fixing the hopper at the loading or unloading position.

[0045] It should be noted that the turning part 2 also includes a spring 211, which is a helical compression spring, preferably made of fatigue-resistant and corrosion-resistant spring steel. The spring 211 is mounted on the limiting shaft 205 and is located between the limiting bracket 207 and the stop block 206.

[0046] Specifically, one end of the spring 211 abuts against the inner end face of the side arm of the limiting frame 207, and the other end abuts against the stepped surface of the stop block 206 or the fixed support on the frame 1. When the limiting frame 207 moves away from the U-shaped limiting groove 204 along the limiting shaft 205, the spring 211 is compressed and stores elastic potential energy; when the external force is removed, the spring 211 releases energy and pushes the limiting frame 207 back to the U-shaped limiting groove 204.

[0047] The preload force ensures that the limiting frame 207 always tends to move toward the U-shaped limiting groove 204, ensuring that its front end can contact the connecting pin of the roller 203 or the connecting rod 202 in a timely and reliable manner and achieve locking.

[0048] In actual operation, when the hopper 101 tilts to the predetermined unloading angle, the roller 203 moves with the connecting rod 202 to the front of the stop block 206. At this time, the roller or its connecting pin presses against the limiting frame 207, causing it to slide backward against the elastic force of the spring 211. After the roller passes the front end of the limiting frame, the spring 211 pushes the limiting frame 207 forward to reset, thereby "locking" the roller or pin into the limiting area and achieving position locking.

[0049] The spring force of spring 211 is selected and designed according to the actual working conditions. It must ensure sufficient preload to achieve reliable locking, but not too large to avoid affecting the operation feel or causing the mechanism to jam.

[0050] It is worth noting that the stop block is provided with at least one slot, the position of which corresponds to the predetermined flipping angle of the hopper. When the hopper flips to the corresponding work position, the roller or connecting pin of the connecting rod is embedded in the slot to achieve position locking.

[0051] It is worth noting that at least one slot 208 is provided on the stop block 206. The slot is an arc-shaped or rectangular groove recessed into the side of the stop block, and its opening faces the direction of the U-shaped limiting groove 204, so as to facilitate the insertion of the connecting pin of the roller 203 or the connecting rod 202.

[0052] The position of the slot 208 is precisely set according to the predetermined tilting angle of the hopper 101. For example, when the hopper is in the horizontal loading position, the roller 203 is located at the upper part of the U-shaped limiting groove 204. At this time, a slot 208 is set accordingly so that the roller or its connecting pin can automatically fall into the groove under the action of gravity or the thrust of the connecting rod. When the hopper is tilted to the inclined unloading position (such as 45° to 60°), the roller 203 moves to the lower area of ​​the U-shaped limiting groove 204, and another slot 208 is set at the corresponding position on the stop block 206 to realize the positioning and locking of the unloading angle.

[0053] In actual operation, when the operator moves the drive lever 201 to rotate the hopper 101, the connecting rod 202 pushes the roller 203 down along the U-shaped limiting groove 204. When the roller 203 approaches the slot 208, under the preload provided by the spring 211, the limiting frame 207 pushes the roller or its connecting pin to accurately embed into the slot 208, thus achieving mechanical limiting.

[0054] The depth and width of the slot 208 are designed according to the size of the roller 203 or the pin to ensure sufficient contact area and impact resistance after insertion, preventing it from coming out due to material weight or vibration.

[0055] Furthermore, there are two slots 208, which are respectively set at different height positions of the stop block 206 to correspond to the two key working positions of the hopper 101: the horizontal loading position and the inclined unloading position.

[0056] The upper slot is located at the higher position of the stop block 206, corresponding to the position of the roller 203 or the connecting pin of the connecting rod 202 when the hopper 101 is in a horizontal state (i.e., 0° inclination). After the hopper finishes unloading and resets, the roller rises back to the top area of ​​the U-shaped limiting groove 204 under the drive of the connecting rod. Under the preload of the spring 211, the roller or pin automatically engages in the upper slot, stably locking the hopper in the horizontal loading position, ensuring that the feed inlet is aligned during feeding and preventing material spillage.

[0057] The lower slot is located at the lower position of the stop block 206, matching the position of the roller 203 when the hopper 101 is tilted to the inclined unloading position (e.g., 45° to 60°). When the operator moves the drive lever 201 to tilt the hopper, the roller slides down along the U-shaped limiting groove 204. When it reaches the predetermined unloading angle, the roller or its connecting pin is accurately embedded in the lower slot under the push of the limiting frame 207, achieving mechanical rigid limiting, ensuring the hopper stops stably, and facilitating the complete dumping of materials into the receiving container or conveying equipment.

[0058] Both slots 208 are designed as arc-shaped grooves or dovetail grooves with slightly smaller openings and enlarged interiors, which can guide the rollers or pins to slide in smoothly and effectively prevent them from coming out under vibration or impact, thus improving locking reliability.

[0059] Furthermore, on the side of the stop 206, a guide arc surface 209 is provided in the area between the upper slot and the lower slot 208. This guide arc surface is a smoothly transitioning arc surface, the curvature of which matches the outer periphery of the roller 203, or is optimized according to the movement trajectory of the roller during the tilting process.

[0060] The guide arc surface 209 connects the entrance areas of the two slots 208, forming a continuous guide path. When the hopper 101 begins to tilt from the horizontal loading station, the roller 203 or its connecting pin first disengages from the upper slot and slides down along the U-shaped limiting groove 204 under the push of the connecting rod 202, and contacts the guide arc surface 209. This arc surface plays a smooth guiding role, preventing the roller from getting stuck or jumping at the edge of the slot.

[0061] As the hopper continues to tilt, the roller 203 slides smoothly along the guide arc surface 209 until it reaches the entrance position of the lower slot 208. Under the preload of the spring 211, the limit frame 207 pushes the roller or pin to smoothly embed into the lower slot, completing the locking of the unloading position.

[0062] Conversely, when the hopper is reset from the unloading station, the roller 203 also slides upward along the guide arc surface 209, guiding it to accurately align and enter the upper slot, thus achieving automatic positioning of the loading position.

[0063] The guide arc surface 209 is ground or polished to reduce frictional resistance and further improve the smoothness of movement. Its design avoids the problem of wear and burrs that easily occur in traditional right-angle transition structures during frequent operation, thus extending the service life of the mechanism.

[0064] Working principle:

[0065] When the device is in use, the material to be mixed is loaded into the hopper 101, and the internal stirring paddle or spiral stirring assembly is activated to mix the material evenly. After mixing is completed, the material needs to be tilted and unloaded.

[0066] The operator holds the ball handle at the free end of the drive lever 201 and applies a pushing or pulling force. The drive lever 201 rotates synchronously with the rotating main shaft of the hopper 101, driving the connecting rod 202 to move. The connecting rod 202 pushes the roller 203 at its end to slide down along the U-shaped limiting groove 204 on the frame 1.

[0067] The two side walls of the U-shaped limiting groove 204 are inclined inward at 5° to 10°, forming a wedge-shaped clamping fit with the outer periphery of the roller 203. This provides radial clamping force during the sliding of the roller, ensuring that the hopper flips smoothly without shaking or jamming.

[0068] When the hopper 101 tilts to the predetermined unloading angle, the roller 203 or its connecting pin approaches the lower slot 208 on the stop block 206. Under the preload of the spring 211, the limit frame 207 pushes the roller or pin to smoothly transition along the guide arc surface 209 and automatically embeds into the lower slot 208 to achieve mechanical locking, so that the hopper stops stably and the unloading is completed.

[0069] After unloading, the drive lever 201 is reversed, and the roller 203 disengages from the lower slot 207 and slides upward along the guide arc surface 209. Under the action of the spring 211 and the connecting rod, it returns to a horizontal state. When the roller 203 reaches the position of the upper slot 208, it automatically engages under the action of the spring preload, locking the hopper in a horizontal loading position, ready for the next feeding.

[0070] The various illustrative embodiments mentioned in this specification refer to specific structures described in connection with those embodiments that are included in at least one embodiment of the general description in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a structure is described in connection with any embodiment, it is intended that implementing such a structure in conjunction with other embodiments falls within the scope of this utility model.

Claims

1. A tilting and unloading mechanism for a mixer, characterized in that, include: A frame, on the top of which a hopper is rotatably mounted via a slewing bearing or bearing assembly, and the hopper contains an agitator or a spiral agitator assembly; The material turning section is located on one side of the frame and includes a drive swing rod welded and fixed to the side wall of the hopper. One end of the drive swing rod is hinged to a connecting rod, and the other end of the connecting rod is hinged to a roller. The corresponding side of the frame is provided with a vertically extending U-shaped limiting groove, and the roller is embedded in the U-shaped limiting groove and can slide along it. The U-shaped limiting groove is equipped with a limiting mechanism to lock the roller in a preset position, thereby limiting the tilting angle of the hopper; wherein, the drive swing rod rotates synchronously with the hopper to drive the connecting rod to push the roller to move within the U-shaped limiting groove, thereby realizing the tilting and unloading of the hopper.

2. The mixer tilting and unloading mechanism according to claim 1, characterized in that, The drive lever is welded and fixed to the extended end of the rotating main shaft of the hopper and rotates synchronously with the main shaft; the free end of the drive lever is provided with a spherical handle for easy manual operation.

3. The mixer tilting and unloading mechanism according to claim 2, characterized in that, The two side walls of the U-shaped limiting groove are inclined inward by 5° to 10° to form a wedge-shaped clamping fit with the outer circumferential surface of the roller, providing radial clamping force.

4. The mixer tilting and unloading mechanism according to claim 3, characterized in that, The material turning section also includes a stop block fixed on the frame, and the stop block is provided with a forward-extending limiting frame; two parallel limiting shafts are fixed to the stop block and pass through the limiting frame laterally, so that the limiting frame can slide horizontally along the limiting shafts.

5. The mixer tilting and unloading mechanism according to claim 4, characterized in that, The turning part also includes a spring, which is fitted on the limiting shaft. One end of the spring abuts against the limiting frame, and the other end abuts against the stop block or the frame, and is used to apply a preload force to the limiting frame in the direction of the U-shaped limiting groove.

6. The mixer tilting and unloading mechanism according to claim 5, characterized in that, At least one slot is provided on the stop block. The position of the slot corresponds to the predetermined flipping angle of the hopper. When the hopper flips to the corresponding position, the roller or connecting pin of the connecting rod is embedded in the slot to achieve position locking.

7. The mixer tilting and unloading mechanism according to claim 6, characterized in that, The slots are provided in two places, at different heights, corresponding to the horizontal loading position and the inclined unloading position of the hopper, and are used to limit and position the connecting rod at the corresponding positions.

8. The mixer tilting and unloading mechanism according to claim 7, characterized in that, The side of the stop block has a guide arc surface in the area between the two slots, which is used to guide the roller to smoothly transition and accurately enter the corresponding slot.

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