Hydraulic locking mixer

Abstract

This utility model discloses a hydraulically locked mixer, comprising: a hydraulic system, a column body, a lifting cylinder, rollers, a drive assembly, a chain, and a locking cylinder; the lifting cylinder is fixed to the column body and connected to the hydraulic system; the rollers are located at the output end of the lifting cylinder; the drive assembly is slidably connected to the column body in the vertical direction, and the drive assembly is used to support the hopper device and drive the hopper device to rotate; one end of the chain is connected to the top of the column body, and the other end is connected to the drive assembly, with the rollers abutting against the chain; the locking cylinder is located on the drive assembly and connected to the hydraulic system, and the locking cylinder is used to fix the hopper device to the drive assembly. This solution, by setting a locking cylinder on the drive assembly, utilizes a hydraulically driven clamping structure to clamp and fix the hopper device on both sides. Precise control of the hydraulic pressure ensures uniform and stable clamping force, preventing displacement or shaking of the hopper device during high-speed rotation and mixing.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulically locked mixers, and more particularly to a hydraulically locked mixer. Background Technology

[0002] In industrial production, mixers, as key equipment for achieving uniform mixing of multi-component materials, are widely used in industries such as chemical, food, pharmaceutical, and building materials. Their performance directly affects product quality and production efficiency. Currently, mainstream mixers on the market are mainly divided into mechanical bolt fixing-wire rope lifting type and manual clamping-cylinder lifting type, depending on the method of hopper fixing and lifting drive. However, these traditionally structured mixers have gradually revealed many technical defects in long-term practical application, making it difficult to meet the demands of modern production for equipment stability, precision, and automation.

[0003] Firstly, in the hopper fixing stage, traditional mixers mostly use mechanical bolts or manual lever clamping. Mechanical bolt fixing requires operators to manually tighten the hopper and drive assembly one by one with multiple bolts. This is not only cumbersome and time-consuming (each fixing operation takes 5-8 minutes), but the tightening force of the bolts also depends on manual experience, which can easily lead to uneven tightening. This can cause the hopper to shift or shake due to force imbalance during high-speed rotation and mixing, and in severe cases, it can even cause the hopper to fall off, posing a great safety hazard. While manual lever clamping is relatively simple to operate, the clamping force is limited and difficult to control precisely. When dealing with a fully loaded hopper (total weight can reach over 500 kg), insufficient clamping force can easily cause the hopper to loosen, affecting the stability of the mixing process and thus reducing the uniformity of material mixing.

[0004] Secondly, the traditional drive method for lifting and lowering mixers has significant shortcomings. Mixers using wire rope traction for lifting are prone to wear and tensile deformation after prolonged use, leading to hopper jamming or tilting during lifting. Furthermore, the elastic deformation of the wire rope reduces lifting accuracy (error can reach ±8mm), making it difficult to meet the precise adjustment requirements for different mixing operation heights. Mixers using cylinder-driven lifting are affected by fluctuations in compressed air pressure, resulting in unstable cylinder piston rod extension and retraction speeds, prone to sudden increases or decreases in lifting speed. Moreover, the cylinder's stroke positioning relies on limit switches, which are susceptible to contamination and malfunction in dusty industrial environments, further affecting the reliability of lifting and positioning and increasing the risk of equipment failure.

[0005] In summary, the technical deficiencies of existing mixers in terms of hopper fixation reliability, lifting drive stability, mixing efficiency, and automation level have become key issues restricting the improvement of industrial production efficiency and product quality assurance. There is an urgent need to propose a mixer technology solution with reasonable structure, stable performance, and high degree of automation to solve the above-mentioned technical pain points. Utility Model Content

[0006] One objective of this invention is to provide a hydraulically locked mixer that solves the technical defects of existing mixers in terms of hopper fixing reliability, lifting drive stability, mixing efficiency, and automation level.

[0007] To achieve the above objectives, the present invention provides a solution as follows: a hydraulically locked mixer includes a hydraulic system, a column body, a lifting cylinder, rollers, a drive assembly, a chain, and a locking cylinder; the lifting cylinder is fixed on the column body and connected to the hydraulic system; the rollers are located at the output end of the lifting cylinder; the drive assembly is slidably connected to the column body in the vertical direction, and the drive assembly is used to support the hopper device and drive the hopper device to rotate; one end of the chain is connected to the top of the column body, and the other end is connected to the drive assembly, with the rollers abutting against the chain; the locking cylinder is located on the drive assembly and connected to the hydraulic system, and the locking cylinder is used to fix the hopper device on the drive assembly.

[0008] Optionally, the drive assembly includes a trolley, a motor, a gearbox, and a rotary arm. The trolley is slidably connected to the column body in the vertical direction. The chain is connected to the trolley. The motor and the gearbox are mounted on the trolley. The gearbox is connected to the output end of the motor. The rotary arm is connected to the gearbox. The rotary arm is used to carry the hopper device. The locking cylinder is mounted on the rotary arm.

[0009] Optionally, the mixer also includes a pressure plate, which is connected to the output end of the locking cylinder and located at the top of the rotary arm. The locking cylinder drives the pressure plate to rotate. The rotary arm is surrounded to form a U-shaped groove. Multiple overlapping blocks are provided on the inner wall of the U-shaped groove. The tops of the multiple overlapping blocks are used to support the hopper device. The pressure plate and the overlapping blocks are used to clamp and fix the hopper device together.

[0010] Optionally, the opening of the U-shaped groove is funnel-shaped.

[0011] Optionally, the mixer also includes multiple limiting posts, and the U-shaped groove has multiple limiting holes in the vertical direction on the inner wall of its opening, and the limiting posts can be detachably inserted into the limiting holes.

[0012] Optionally, the drive assembly also includes a base plate connected to the rotary arm and positioned vertically below the U-shaped groove. The base plate is used to support the hopper device.

[0013] Optionally, the mixer also includes a positioning column, which has multiple positioning holes in its main body in the vertical direction. The positioning column can be detachably inserted into one of the multiple positioning holes and is used to support the top of the trolley.

[0014] The beneficial effects of this utility model are as follows: This technical solution, through a reasonable structural design, effectively solves the technical problems existing in traditional mixers regarding hopper fixing, lifting stability, and mixing efficiency, achieving significant technical results. Firstly, addressing the problem of unreliable hopper fixing and easy displacement during rotation in traditional mixers, this solution uses a locking cylinder on the drive assembly to clamp and fix the hopper device on both sides using a hydraulically driven clamping structure. Compared to traditional mechanical bolt fixing, this not only eliminates the tedious manual bolt tightening but also ensures uniform and stable clamping force through precise control of hydraulic pressure, preventing displacement or shaking of the hopper device during high-speed rotation and mixing, significantly improving the reliability of hopper fixing and operational safety. Secondly, addressing the issues of jamming and low lifting accuracy that often occur when traditional mixers use wire ropes or cylinders for lifting, this solution employs a lifting cylinder combined with a chain transmission structure. The hydraulic drive of the cylinder enables smooth extension and retraction of the piston rod, and the rolling friction transmission between the rollers and the chain reduces frictional resistance during lifting. Simultaneously, the guide rails on the column body guide the drive components, ensuring precise and controllable lifting trajectory and effectively preventing lifting jamming. The lifting accuracy can be controlled within ±2mm, meeting the precise adjustment requirements for different mixing operation heights. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a front view structural schematic diagram of a hydraulically locked mixer provided in an embodiment of the present invention;

[0017] Figure 2 This is a top view of the mixer provided in this embodiment of the present invention when the hopper device is not locked;

[0018] Figure 3 This is a top view of the mixer provided in this embodiment of the present invention with the hopper locking device in place;

[0019] Figure 4 This is a front view structural schematic diagram of a hydraulically locked mixer provided in another embodiment of the present invention.

[0020] Explanation of icon numbers:

[0021] 200 hopper device, 100 mixer, 110 hydraulic system, 120 main column, 130 lifting cylinder

[0022] 140 Rollers, 150 Drive assembly, 151 Trolley, 152 Electric motor, 153 Gearbox, 154 Rotary arm

[0023] 155 U-shaped channel, 156 opening, 157 overlapping block, 160 chain, 170 locking cylinder, 180 pressure plate

[0024] 190 base plate. Detailed Implementation

[0025] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings, clearly and comprehensively demonstrating the technical solution. It should be noted that the listed embodiments are only a part of this utility model, and not all possible implementations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Please see Figures 1 to 3 As shown, Figure 1 This is a front view of a hydraulically locked mixer 100 according to an embodiment of the present invention. Figure 2 This is a top view of the mixer 100 provided in this embodiment of the present invention when the hopper device 200 is not locked. Figure 3 This is a top view of the mixer 100 provided in this embodiment of the present invention with the locking hopper device 200 in place.

[0027] The hydraulically locked mixer 100 includes: a hydraulic system 110, a column body 120, a lifting cylinder 130, a roller 140, a drive assembly 150, a chain 160, and a locking cylinder 170; the lifting cylinder 130 is fixed on the column body 120 and connected to the hydraulic system 110; the roller 140 is located at the output end of the lifting cylinder 130; the drive assembly 150 is slidably connected to the column body 120 in the vertical direction, and the drive assembly 150 is used to support the hopper device 200 and drive the hopper device 200 to rotate; one end of the chain 160 is connected to the top of the column body 120, and the other end is connected to the drive assembly 150, and the roller 140 abuts against the chain 160; the locking cylinder 170 is located on the drive assembly 150 and connected to the hydraulic system 110, and the locking cylinder 170 is used to fix the hopper device 200 on the drive assembly 150. The hopper device 200 is transported to the drive assembly 150. The hydraulic system 110 drives the locking cylinder 170 to lock the hopper device 200. The hydraulic system 110 also drives the lifting cylinder 130 to move the roller 140 upward. The roller 140 pushes the chain 160 upward, and the chain 160 further drives the drive assembly 150 upward to a specified height. The drive assembly 150 then rotates the hopper device 200, thereby mixing multiple materials together. In this embodiment, the hydraulic locking mixer 100 is built around the functional logic of "stable support - precise lifting - reliable locking - efficient mixing". The column body 120 serves as the load-bearing frame of the entire equipment, providing an installation reference for key components such as the lifting cylinder 130 and the drive assembly 150. The lifting cylinder 130 is bolted to a pre-set mounting position on the side wall of the column body 120, and its hydraulic port is sealed to the oil outlet pipeline of the hydraulic system 110 to ensure stable transmission of hydraulic power. The piston rod output end of the lifting cylinder 130 is rotatably connected to the roller 140 through a bearing, allowing the roller 140 to roll flexibly. The drive assembly 150 adopts a slider-guide rail cooperation structure, with sliders on both sides slidingly connected to vertically arranged guide rails on the column body 120. The top of the drive assembly 150 is equipped with a platform for placing the hopper device 200, which integrates a motor and a reducer. The mechanism includes a motor output shaft connected to the rotating shaft of the hopper device 200 via a coupling, which can drive the hopper device 200 to rotate around a horizontal axis; the chain 160 is a high-strength roller chain, one end of which is fixed to the lug on the top of the column body 120 by a pin, and the other end passes under the roller 140 and is connected to the top hanging point of the drive assembly 150. Under normal conditions, the roller 140 holds the chain 160 against its own weight, keeping the chain 160 taut; at least two locking cylinders 170 are provided and installed on both sides of the drive assembly 150 placement platform. The cylinder body is welded and fixed to the drive assembly 150. The hydraulic port of the locking cylinder 170 is connected to the hydraulic system 110 through a branch pipeline, and the extension and retraction of the piston rod can be realized by hydraulic control.

[0028] In actual operation, the hopper device 200 containing the materials to be mixed is first placed on the placement platform of the drive assembly 150. The hydraulic system 110 supplies oil to the locking cylinder 170, pushing the piston rod to extend and clamp the side wall of the hopper device 200, thus fixing the hopper device 200. Then, the hydraulic system 110 supplies oil to the lifting cylinder 130, pushing the piston rod upward and driving the roller 140 to move upward synchronously. When the roller 140 moves upward, it generates an upward thrust on the chain 160, causing the chain 160 to drive the drive assembly 150 to slide upward along the guide rail of the column body 120 until the drive assembly 150 rises to the preset mixing height. Finally, the motor inside the drive assembly 150 is started. The motor drives the hopper device 200 to rotate through the reduction mechanism. During the rotation of the hopper device 200, the materials inside tumble and collide with each other under the action of centrifugal force and gravity, thereby achieving uniform mixing of various materials.

[0029] This technical solution, through a reasonable structural design, effectively solves the technical problems of traditional mixer 100 in terms of hopper fixing, lifting stability, and mixing efficiency, achieving significant technical results. Firstly, addressing the issue of unreliable hopper fixing and easy displacement during rotation in traditional mixer 100, this solution uses a locking cylinder 170 on the drive assembly 150 to clamp and fix the hopper device 200 on both sides using a hydraulically driven clamping structure. Compared to traditional mechanical bolt fixing, this not only eliminates the tedious manual bolt tightening but also ensures uniform and stable clamping force through precise hydraulic pressure control, preventing displacement or shaking of the hopper device 200 during high-speed rotation and mixing, significantly improving the reliability of hopper fixing and operational safety. Secondly, addressing the issues of jamming and low lifting accuracy that often occur when traditional mixers 100 use wire ropes or cylinders for lifting, this solution employs a transmission structure combining a lifting cylinder 130 and a chain 160. The hydraulic drive of the cylinder enables smooth extension and retraction of the piston rod. Combined with the rolling friction transmission between the roller 140 and the chain 160, frictional resistance during lifting is reduced. Simultaneously, the guide rail on the column body 120 guides the drive assembly 150, ensuring precise and controllable lifting trajectory and effectively preventing jamming. The lifting accuracy can be controlled within ±2mm, meeting the precise adjustment requirements for different mixing operation heights.

[0030] Finally, regarding mixing efficiency, the drive assembly 150, through the cooperation of a motor and a reduction mechanism, can adjust the rotation speed of the hopper device 200 according to the material characteristics (adjustment range: 0-60 r / min). Compared to the fixed-speed design of the traditional mixer 100, this can adapt to the mixing needs of materials with different flowability and particle size. Simultaneously, the hopper device 200 rotates and mixes only after rising to a suitable height, avoiding the problem of material splashing to the bottom of the equipment during mixing, which is difficult to clean. Furthermore, the rotation trajectory of the hopper device 200 better conforms to the dynamic requirements of material mixing, enabling the material to achieve uniform mixing in a shorter time (20%-30% shorter than the traditional mixer 100), with a mixing uniformity of over 95%, significantly improving mixing efficiency and quality. In addition, the entire equipment's operation is centrally controlled by the hydraulic system 110, enabling automated linkage of hopper fixing, lifting, and mixing actions, reducing manual intervention, lowering the labor intensity of operators, and further improving the overall operating efficiency of the equipment.

[0031] The drive assembly 150 includes a trolley 151, a motor 152, a gearbox 153, and a rotary arm 154. The trolley 151 is slidably connected to the column body 120 in the vertical direction. A chain 160 is connected to the trolley 151. The motor 152 and the gearbox 153 are mounted on the trolley 151. The gearbox 153 is connected to the output end of the motor 152. The rotary arm 154 is connected to the gearbox 153 and is used to support the hopper device 200. A locking cylinder 170 is mounted on the rotary arm 154. In this embodiment, the drive assembly 150 of the hydraulic locking mixer 100 is further refined into a trolley 151, a motor 152, a gearbox 153, and a rotary arm 154. The components work together to realize the lifting and rotating mixing functions of the hopper device 200. The overall structure is tightly connected and the functions are clearly defined. The trolley 151 serves as the moving carrier of the drive assembly 150. It has sliding grooves on both sides that fit the vertical guide rails of the column body 120. Through the nesting cooperation of the sliding grooves and the guide rails, the trolley 151 can slide stably vertically along the column body 120. A hanging ring is pre-set at the top of the trolley 151, which is detachably connected to the end of the chain 160 away from the top of the column body 120 via a shackle, ensuring that the chain 160 can stably drive the trolley 151 to rise and fall. The motor 152 is a variable frequency three-phase asynchronous motor, fixed to one side of the trolley 151 with bolts. The motor output shaft faces the center of the trolley 151, and a keyway is provided at the end of the output shaft. The reduction gearbox 153 is a planetary gear reduction gearbox, its housing fixed to the trolley 151 with bolts. Next to the motor, the input shaft of the gearbox 153 and the output shaft of the motor 152 are coaxially connected by a coupling to achieve stable power transmission. The output shaft of the gearbox 153 extends horizontally to the outside of the trolley 151, and a flange is provided at the end of the output shaft. One end of the rotary arm 154 is provided with a connecting plate adapted to the flange of the output shaft of the gearbox 153, which is fixedly connected to the output shaft of the gearbox 153 by bolts. The other end of the rotary arm 154 is a horizontal bearing section. The bearing section has a pre-set positioning slot for the hopper device 200, and mounting seats for locking cylinders 170 are provided on both sides of the bearing section. The locking cylinders 170 are fixed to both sides of the bearing section of the rotary arm 154 by mounting seat bolts. The hydraulic interface of the locking cylinder 170 is connected to the branch oil circuit of the hydraulic system 110 through a high-pressure hose.

[0032] In actual operation, the hopper device 200 is first placed in the positioning slot of the bearing section of the rotary arm 154. The hydraulic system 110 supplies oil to the locking cylinder 170, and the piston rod extends to clamp the side wall of the hopper device 200 to complete the fixation. Then, the hydraulic system 110 drives the lifting cylinder 130 to move the roller 140 upward. The roller 140 pushes the chain 160 to pull the trolley 151 up along the guide rail of the column body 120 to the designated height. Then, the motor 152 is started. The power of the motor 152 is reduced and increased in torque by the reduction gearbox 153 to drive the rotary arm 154 to rotate. The rotary arm 154 drives the hopper device 200 to rotate synchronously, so that the internal materials are fully mixed during the rotation.

[0033] The mixer 100 also includes a pressure plate 180, which is connected to the output end of the locking cylinder 170 and located at the top of the rotary arm 154. The locking cylinder 170 drives the pressure plate 180 to rotate. The rotary arm 154 is formed with a U-shaped groove, and multiple overlapping blocks 157 are provided on the inner wall of the U-shaped groove. The tops of the multiple overlapping blocks 157 are used to support the hopper device 200. The pressure plate 180 and the overlapping blocks 157 are used to clamp and fix the hopper device 200 together. In this embodiment, based on the original drive assembly 150 structure, the fixing structure of the hopper device 200 is further optimized by adding the pressure plate 180, the U-shaped groove, and the overlapping blocks 157, which work together with the locking cylinder 170 to achieve efficient clamping and fixing of the hopper device 200. The bearing section of the rotary arm 154 is integrally machined into a U-shaped groove structure. The opening 156 of the U-shaped groove faces away from the gearbox 153, facilitating the insertion of the hopper device 200 from the side. Multiple overlapping blocks 157 are symmetrically arranged vertically on the two opposite inner walls of the U-shaped groove. The overlapping blocks 157 are rectangular metal blocks, fixed to the inner wall of the U-shaped groove by welding or bolts. The overlapping blocks 157 on the same side wall are evenly distributed horizontally, with the tops of the overlapping blocks 157 on both sides at the same horizontal plane, forming a support platform for supporting the hopper device 200. The hopper device 200 can be stably placed on top of the overlapping blocks 157 on both sides, achieving initial positioning. The pressure plate 180 adopts an arc-shaped metal plate structure, the curvature of which matches the curvature of the outer wall of the hopper device 200. One end of the locking cylinder 180 is rotatably connected to the output end (piston rod end) of the locking cylinder 170 via a hinge, while the other end can swing freely. The cylinder body of the locking cylinder 170 is tilted and fixed to the top of the U-shaped groove opening 156 of the rotary arm 154 via a bracket. The axis of the locking cylinder 170 forms an angle of 30°-45° with the vertical center line of the U-shaped groove, so that when the locking cylinder 170 drives the piston rod to extend and retract, it can drive the pressure plate 180 to rotate around the hinge, thereby achieving the contact or separation between the pressure plate 180 and the outer wall of the hopper device 200. At the same time, a 3-5mm thick rubber buffer layer is pasted on the inner wall of the pressure plate 180 (the side in contact with the hopper device 200), which can avoid damage caused by the rigid contact between the pressure plate 180 and the hopper device 200, and can increase the friction between the two and improve the clamping stability.

[0034] In actual operation, the operator first pushes the hopper device 200 into the U-shaped groove of the rotary arm 154 from the opening 156 side, so that the hopper device 200 is stably overlapped on the top of the two overlapping blocks 157. At this time, there is a 5-10mm gap between the outer wall of the hopper device 200 and the inner wall of the U-shaped groove, completing the initial bearing and positioning of the hopper device 200. Then, the hydraulic system 110 supplies oil to the locking cylinder 170, pushing the piston rod to extend. The piston rod drives the pressure plate 180 to rotate around the hinge towards the hopper device 200 until the rubber buffer layer on the inner side of the pressure plate 180 is tightly attached to the outer wall of the hopper device 200. At this time, the pressure plate 180 is in the locking cylinder 170. Under the action of thrust, a clamping force is applied to the hopper device 200 toward the inside of the U-shaped groove, while the overlapping block 157 provides an upward supporting force from the bottom of the hopper device 200. The two form a cooperative clamping structure of "top clamping - bottom support", which together firmly fixes the hopper device 200 in the U-shaped groove of the rotary arm 154. The subsequent process of lifting cylinder 130 driving trolley 151 to rise and motor 152 driving rotary arm 154 to rotate and mix is ​​consistent with the aforementioned embodiment. In the entire lifting and mixing process, pressure plate 180 and overlapping block 157 always maintain the clamping and fixing state of hopper device 200, ensuring stable operation of hopper device 200.

[0035] This technical solution addresses the technical problems of "unstable bottom support," "uneven force on the side clamping," and "inconvenient loading and unloading of the hopper" in traditional hopper fixing structures by adding a pressure plate 180, a U-shaped groove, and overlapping blocks 157 in a coordinated structure, significantly improving the stability and ease of operation of the hopper fixing. Firstly, addressing the issue that the traditional rotary arm 154 bearing section relies solely on planar support, making the hopper prone to sliding horizontally during lifting or rotation, this solution designs the rotary arm 154 bearing section as a U-shaped groove structure and sets overlapping blocks 157 within the groove. The two side walls of the U-shaped groove restrict the lateral displacement of the hopper device 200 from both sides, while the overlapping blocks 157 provide multi-point uniform support from the bottom. Compared to traditional single planar support, the bottom support area of ​​the hopper device 200 increases by more than 40%, and the lateral displacement is blocked by the side walls of the U-shaped groove, effectively preventing lateral displacement of the hopper due to swaying during lifting and significantly improving the stability of the hopper's load-bearing capacity.

[0036] Secondly, addressing the issue of concentrated force and localized deformation in traditional single- or double-sided clamping structures, this solution employs a "coordinated clamping" design between the pressure plate 180 and the overlapping block 157. The locking cylinder 170 drives the pressure plate 180 to apply an oblique clamping force from the outside of the top of the hopper device 200, while the overlapping block 157 provides a reverse support force from the bottom. This ensures that the clamping force on the hopper device 200 is evenly distributed between the bottom support surface and the top clamping surface, preventing excessive localized force that could lead to hopper deformation. Simultaneously, the rubber buffer layer inside the pressure plate 180 not only increases friction but also absorbs hopper vibration during mixing, further reducing the risk of displacement caused by vibration. Compared to traditional unbuffered metal clamping structures, the stability of the hopper is improved by more than 60%, and the hopper's service life is extended by 30%. Finally, addressing the issues of the traditional hopper fixed structure having an excessively small opening 156 and the time-consuming loading and unloading of the hopper, this solution adopts a side opening 156 design for the U-shaped channel. The hopper device 200 can be directly pushed in or removed from the side without disassembling other parts. Combined with the automatic clamping / releasing function of the pressure plate 180 driven by the locking cylinder 170, the loading and unloading time of the hopper is shortened from the traditional 5-8 minutes to 1-2 minutes, significantly improving operational convenience. At the same time, the design of multiple overlapping blocks 157 can accommodate hopper devices 200 with different bottom sizes. As long as the width of the hopper device 200 does not exceed the inner width of the U-shaped channel, stable bearing can be achieved by adjusting the support position of the overlapping blocks 157. Compared with the traditional fixed-size support structure, the hopper's adaptability range is expanded by more than 50%, further improving the compatibility of the mixer 100 with hoppers of different specifications. Furthermore, the rotating connection design between the pressure plate 180 and the output end of the locking cylinder 170 allows the pressure plate 180 to adaptively adjust the contact angle according to the curvature of the outer wall of the hopper. This ensures that the pressure plate 180 can always fit tightly against the outer wall of the hopper during the clamping process of hoppers of different specifications, avoiding clamping gaps caused by differences in the curvature of the hoppers. This further ensures the reliability of clamping and fixing, providing a stable structural foundation for subsequent high-speed rotational mixing. It keeps the material mixing uniformity above 98% while completely eliminating the risk of mixing interruption caused by hopper loosening.

[0037] This embodiment optimizes the shape of the opening 156 of the original U-shaped trough structure, setting the opening 156 of the U-shaped trough to a trumpet shape, further improving the convenience of loading and unloading and the positioning accuracy of the hopper device 200. Specifically, the width of the main trough section of the U-shaped trough (the section near the root of the rotating arm 154) is adapted to the bottom width of the hopper device 200, ensuring that the hopper device 200 maintains a reasonable gap with the trough wall after being placed in order to achieve stable load-bearing. The opening 156 section of the U-shaped trough (the section away from the root of the rotating arm 154, the section for the hopper device 200 to enter and exit) adopts a gradually widening design, forming a trumpet-shaped structure. The outer width of the opening 156 segment (the end furthest from the main trough segment) is 80-120mm wider than the main trough segment, while the inner width of the opening 156 segment (the end closest to the main trough segment) is the same as the main trough segment. Furthermore, the two sides of the opening 156 segment exhibit a gradual inclination angle of 15°-20° from the outside to the inside, creating a "wider outside, narrower inside" flared shape for the entire U-shaped trough opening 156. Simultaneously, the edges of the flared opening 156 are all chamfered (with a chamfer radius of 5-8mm) to prevent sharp edges from scratching operators or scraping the outer wall of the hopper device 200. Multiple overlapping blocks 157 on the inner wall of the U-shaped channel are still symmetrically arranged in the vertical direction, and the arrangement range of the overlapping blocks 157 covers the main channel section of the U-shaped channel, ensuring that after the hopper device 200 is pushed into the main channel section, the bottom can be stably overlapped on the top of the overlapping blocks 157 to achieve initial positioning; the structure and installation method of the pressure plate 180 and the locking cylinder 170 that cooperate with the U-shaped channel are the same as those in the aforementioned embodiment, and the pressure plate 180 is still driven by the locking cylinder 170 to clamp and fix the hopper device 200.

[0038] In actual operation, when the operator loads and unloads the hopper device 200, the wide opening 156 of the U-shaped groove is funnel-shaped, which can greatly expand the placement range of the hopper device 200. Even if the operator slightly deviates from the pushing angle of the hopper device 200, the bottom of the hopper device 200 can automatically correct its direction and smoothly slide into the main section of the U-shaped groove under the guidance of the inclined groove wall of the funnel-shaped opening 156. After the bottom of the hopper device 200 overlaps the top of the overlapping block 157, the locking cylinder 170 drives the pressure plate 180 to rotate and fit against the outer wall of the hopper device 200, and together with the overlapping block 157, achieves clamping and fixing. The subsequent lifting and mixing process is consistent with the aforementioned embodiment.

[0039] The mixer 100 also includes multiple limiting posts. Multiple limiting holes are vertically formed on the inner wall of the U-shaped groove at its opening 156. The limiting posts can be detachably inserted into the limiting holes. This embodiment adds multiple limiting posts and matching limiting hole structures to the U-shaped groove with its trumpet-shaped opening 156, further enhancing the anti-detachment effect of the hopper device 200 within the U-shaped groove and ensuring the stability of the hopper device 200 during equipment operation. The U-shaped groove has multiple symmetrically arranged limiting holes on the inner walls of its two sides of the flared opening 156 in the vertical direction. The limiting holes adopt a blind hole structure with a diameter of 15-20mm and a depth of 25-30mm. The limiting holes on the same side wall are evenly distributed in the horizontal direction, and the distance between adjacent limiting holes is 80-100mm. The limiting holes on the inner walls of both sides correspond one-to-one to ensure that the limiting post can form symmetrical limiting on the hopper device 200 from both sides after insertion. The limiting post adopts a cylindrical metal rod structure with a diameter that matches the diameter of the limiting hole and a length of 50-60mm. One end of the limiting post is provided with an external thread, and the other end is welded with a circular handle with a diameter of 25-30mm for easy insertion and removal by the operator. The limiting post and the limiting hole are detachably inserted. The operator can select the corresponding height of the limiting hole according to the height of the hopper device 200 and insert the limiting post so that the inner end of the limiting post (the end away from the handle) extends into the U-shaped groove and the extension length is controlled within 20-30mm, which can effectively prevent the hopper device 200 from moving towards the opening 156.

[0040] In actual operation, the operator first pushes the hopper device 200 into the U-shaped trough opening 156, guiding it down into the main trough section under the guidance of the inclined trough wall of opening 156, until the hopper device 200 overlaps the overlapping block 157 according to the height of the hopper device 200 to be installed; then, the limiting post is inserted into the limiting holes at the corresponding heights on both sides of the inner wall of the U-shaped trough opening 156 to ensure stable insertion of the limiting post. At this time, the outer wall of the hopper device 200 abuts against or leaves a gap of 5-10mm with the inner end of the limiting post, and the limiting post forms a shape with the hopper device 200 from the opening 156 side. The device forms a blockage; then the locking cylinder 170 is activated, driving the pressure plate 180 to clamp the hopper device 200; subsequently, the lifting cylinder 130 drives the trolley 151 to rise, and the motor 152 drives the rotary arm 154 to rotate. During the mixing process, the limiting post always limits the hopper device 200 in the direction of the opening 156, preventing the hopper device 200 from moving and falling out to the opening 156 side due to vibration, centrifugal force, or other factors; when it is necessary to remove the hopper device 200, first loosen the pressure plate 180, and then pull out the limiting post, so that the hopper device 200 can be smoothly removed from the opening 156 side.

[0041] The mixer 100 also includes a positioning column. In the vertical direction, the column body 120 has multiple positioning holes. The positioning column can be detachably inserted into one of these holes and is used to support the top of the trolley 151. This embodiment adds a positioning column and multiple positioning holes to the existing hydraulically locked mixer 100 structure to achieve precise positioning and stable support of the trolley 151 after lifting and lowering, further ensuring the safety and reliability of the mixing operation. The column body 120 has multiple positioning holes on the side of the guide rail extending vertically. The positioning holes are through-hole circular holes with a diameter of 25-30mm. The multiple positioning holes are evenly distributed vertically, with a spacing of 150-200mm between adjacent positioning holes. The opening height of the positioning holes covers the entire lifting stroke range of the trolley 151, ensuring that when the trolley 151 rises to any preset mixed operation height, there is a corresponding positioning hole that can cooperate with the positioning column. The positioning column is a cylindrical structure made of high-strength alloy steel. Its diameter matches the diameter of the positioning hole, and its length is 40-50mm longer than the thickness of the column body 120. One end of the positioning column has a grip with anti-slip texture, and the other end is a smooth top holding end. An elastic retaining ring is sleeved on the outer side of the positioning column near the grip. When the positioning column is inserted into the positioning hole, the elastic retaining ring can be locked in the annular groove on the outer side of the positioning hole to prevent the positioning column from accidentally falling out during equipment operation. The positioning pin and positioning hole are detachably inserted and their working process is coordinated with the lifting action of the trolley 151: When the hydraulic system 110 drives the lifting cylinder 130 to move the roller 140 upward, and then pulls the trolley 151 along the guide rail of the column body 120 through the chain 160, the operator can observe the corresponding position of the reference scale line on the top of the trolley 151 and the positioning hole on the column body 120 according to the preset mixed working height. After the trolley 151 rises to the target height (the reference scale line on the top of the trolley 151 is aligned with the center of the target positioning hole), the hydraulic oil supply circuit of the lifting cylinder 130 is first closed to maintain the current height of the trolley 151, and then the positioning pin is inserted into the corresponding positioning hole from the outside of the column body 120. The top end of the positioning column passes through the positioning hole and extends to the inside of the column body 120 until the top end is tightly pressed against the preset top surface of the trolley 151. At this time, the positioning column provides stable support for the trolley 151 from below (relative to the lifting direction of the trolley 151, the top end of the positioning column is located at the top of the trolley 151, forming an upward supporting force), and together with the lifting cylinder 130 and the chain 160, forms a triple lifting and positioning structure of "hydraulic drive - chain 160 traction - positioning column support". When it is necessary to adjust the height of the trolley 151, the positioning column is first pulled out, and then the lifting cylinder 130 is driven to extend and retract through the hydraulic system 110 to move the trolley 151 to a new height. Then, the positioning column is reinserted to complete the positioning.

[0042] Please see Figure 4 As shown, Figure 4This is a front view structural schematic diagram of a hydraulically locked mixer 100 provided in another embodiment of the present invention.

[0043] The drive assembly 150 also includes a base plate 190, which is connected to the rotary arm 154 and is vertically positioned below the U-shaped groove. The base plate 190 supports the hopper device 200. In this embodiment, based on the rotary arm 154 and the U-shaped groove of the drive assembly 150, the addition of the base plate 190 structure further optimizes the support stability of the hopper device 200, ensuring that the hopper maintains reliable support throughout the process of carrying materials and rotating and mixing. The base plate 190 is made of high-strength steel plate with a thickness of 8-12mm. It has a rectangular structure, with a length consistent with the length of the U-shaped channel and a width slightly smaller than the inner width of the U-shaped channel (the difference is controlled within 5-8mm). This ensures that the base plate 190 can fit the internal space of the U-shaped channel without affecting the placement of the hopper device 200. The upper surface of the base plate 190 is treated with anti-slip material (such as diamond-shaped anti-slip texture or anti-slip coating) to increase the friction with the bottom of the hopper device 200 and prevent the hopper from sliding. The base plate 190 is connected to the rotary arm 154 by a combination of welding and bolts. The lower surface of the base plate 190 is in close contact with the bearing plane at the bottom of the U-shaped channel of the rotary arm 154. The base plate 190 is initially fixed by spot welding, and then bolt holes are made at intervals along the edge of the base plate 190. Hexagonal bolts are used to fasten the base plate 190 to the rotary arm 154, ensuring that the base plate 190 does not loosen or shift during the rotation of the hopper. From the installation position, the base plate 190 completely covers the bottom area of ​​the U-shaped channel in the vertical direction and is located directly below the overlapping block 157 on the inner wall of the U-shaped channel. When the hopper device 200 is placed into the U-shaped channel, the bottom of the hopper device 200 simultaneously contacts the top of the overlapping block 157 and the upper surface of the base plate 190. The overlapping block 157 provides limiting support for the bottom of the hopper from both sides, while the base plate 190 supports the weight of the hopper device 200 and the load of the material from the bottom.

[0044] In actual operation, the operator pushes the hopper device 200 into the U-shaped funnel opening 156. The bottom of the hopper first contacts the upper surface of the base plate 190 and slides along the anti-slip surface until the two sides of the bottom overlap on the overlapping blocks 157. At this time, the base plate 190 and the overlapping blocks 157 together form a composite support structure of "overall surface support + two-side point support". Then, the locking cylinder 170 drives the pressure plate 180 to clamp the side wall of the hopper. The limiting column limits the position from the side of the opening 156, and the positioning column fixes the height of the trolley 151. Under the coordinated action of multiple structures, the hopper device 200, under the stable support of the base plate 190, rotates synchronously with the rotary arm 154 to complete the mixing operation. Throughout the process, the base plate 190 continuously bears the total load of the hopper and the material, avoiding deformation of the bottom of the hopper due to excessive local stress.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0046] Furthermore, when an element is referred to as 'fixed to' or 'set on' another element, it may be directly attached to that element, or there may be other intervening elements between them. When an element is referred to as 'connected to' another element, it can be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0047] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, the designation of features such as "first" and "second" can either explicitly express or imply the presence of at least one such feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hydraulically locking mixer, characterized in that, The hydraulically locked mixer includes: Hydraulic system; Main column; The lifting cylinder is fixed to the main body of the column and connected to the hydraulic system; Rollers are installed at the output end of the lifting cylinder; A drive assembly is slidably connected to the column body in the vertical direction. The drive assembly is used to support the hopper device and drive the hopper device to rotate. A chain, one end of which is connected to the top of the column body and the other end of which is connected to the drive assembly, with the roller abutting against the chain; and A locking cylinder is mounted on the drive assembly and connected to the hydraulic system. The locking cylinder is used to fix the hopper device on the drive assembly.

2. The hydraulically locking mixer according to claim 1, characterized in that, The drive assembly includes a trolley, a motor, a gearbox, and a rotary arm. The trolley is slidably connected to the column body in a vertical direction. The chain is connected to the trolley. The motor and the gearbox are mounted on the trolley. The gearbox is connected to the output end of the motor. The rotary arm is connected to the gearbox. The rotary arm is used to support the hopper device. The locking cylinder is mounted on the rotary arm.

3. The hydraulically locking mixer according to claim 2, characterized in that, The mixer also includes a pressure plate, which is connected to the output end of the locking cylinder and located at the top of the rotary arm. The locking cylinder drives the pressure plate to rotate. The rotary arm is surrounded to form a U-shaped groove. Multiple overlapping blocks are provided on the inner wall of the U-shaped groove. The tops of the multiple overlapping blocks are used to support the hopper device. The pressure plate and the overlapping blocks are used to clamp and fix the hopper device together.

4. The hydraulically locking mixer according to claim 3, characterized in that, The opening of the U-shaped groove is funnel-shaped.

5. The hydraulically locking mixer according to claim 3, characterized in that, The mixer also includes multiple limiting posts, and the U-shaped groove has multiple limiting holes opened vertically on the inner wall of its opening. The limiting posts can be detachably inserted into the limiting holes.

6. The hydraulically locking mixer according to claim 3, characterized in that, The drive assembly also includes a base plate, which is connected to the rotary arm and is vertically positioned below the U-shaped groove. The base plate is used to support the hopper device.

7. The hydraulically locking mixer according to claim 2, characterized in that, The mixer also includes a positioning column. In the vertical direction, the column body has multiple positioning holes. The positioning column can be detachably inserted into one of the multiple positioning holes and is used to support the top of the trolley.

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