Mobile lifting feeder

Abstract

The utility model discloses a mobile lifting material feeding device, including material containing portion, set in the machine front upper portion, discharge control portion, solidly established in material containing portion bottom and with its inner chamber intercommunication, flexible connecting portion, one end communicates with the discharge control portion export, and the other end passes through quick -wearing clamp and is detachable communication with the reaction cauldron interface, forms the deformable unloading channel, lifting drive portion, vertical solid establishment in the machine rear portion, and its jacking axle output end is upwards, connecting seat, rigid connection in material containing portion below, and located lifting drive portion jacking axle output end just above, floating connecting piece, set up in the jacking axle output end of lifting drive portion and connecting seat between, guide mechanism is used for restricting material containing portion and only vertical direction elevating. The utility model realizes a machine service multiple reaction cauldrons, removes convenient, elevates steadily, and safe operation, is applicable to the solid material feeding of chemical industry, pharmacy, foodstuff etc. industry, and obviously promotes the feeding efficiency and reduces the labor intensity.

Description

Technical Field

[0001] This utility model relates to the technical field of mobile lifting feeders, and in particular to a mobile lifting feeder. Background Technology

[0002] In industries such as chemical, pharmaceutical, and food processing, solid powders or granules need to be frequently fed into reaction vessels at different locations and heights. Traditional fixed feeding platforms have the following shortcomings:

[0003] 1. The location is fixed, which cannot accommodate multiple reactors feeding in turn. Multiple platforms need to be built or forklifts, cranes and other handling equipment are needed, which takes up a lot of space and costs a lot.

[0004] 2. When the height of the feed inlet of the reactor is inconsistent, it is necessary to make platforms of different heights or add elevators, which involves a large amount of construction work and a long cycle.

[0005] 3. Manually climbing to feed materials is labor-intensive and lacks protection, posing safety hazards such as falls and dust exposure.

[0006] 4. While existing mobile material carts can be moved, they lack lifting capabilities, requiring manual labor to move bags to higher transition hoppers, resulting in high physical exertion and low efficiency. Therefore, there is an urgent need for a feeding device that can be both flexibly moved and quickly lifted to adapt to different reactor heights. Utility Model Content

[0007] The purpose of this invention is to provide a mobile lifting feeder to solve the aforementioned problems in the prior art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A mobile lifting feeder includes:

[0010] Material receiving section, located at the top front of the machine, is used to temporarily store materials to be fed;

[0011] The discharge control unit is fixed at the bottom of the material receiving section and communicates with its inner cavity, and is used to control the discharge of materials.

[0012] The flexible connection part is connected at one end to the outlet of the discharge control part, and at the other end to the reactor interface via a quick-connect clamp, forming a deformable discharge channel.

[0013] The lifting drive unit is vertically fixed at the rear of the machine, with its lifting shaft output end facing upwards, and is used to provide lifting power.

[0014] The connecting seat is rigidly connected to the lower part of the material receiving part and is located directly above the output end of the lifting shaft of the lifting drive part;

[0015] A floating connector is installed between the output end of the lifting shaft of the lifting drive unit and the connecting seat. Its upper end is fixed to the connecting seat and its lower end is fixed to the output end of the lifting shaft. It is used to transmit lifting force and automatically compensate for the concentricity error between the material receiving part and the lifting drive unit.

[0016] The guiding mechanism includes at least two sets of guide pairs symmetrically arranged on both sides of the lifting drive unit. Each set of guide pairs includes a guide member and a sliding member. The guide member is fixed to the bottom of the material receiving part, and the sliding member is fixed to the base plate of the whole machine and slides in cooperation with the guide member to constrain the material receiving part to only move up and down in the vertical direction.

[0017] In some specific embodiments, the material receiving part is a feeding chamber, which is a rectangular barrel with an opening at the top and a circular discharge port at the front end of its bottom plate.

[0018] In some specific embodiments, the discharge control unit includes a discharge connector and a manual valve; the discharge connector is welded to the discharge port of the bottom plate of the feeding chamber, and its outlet flange is locked to the inlet flange of the manual valve by bolts, and the manual valve handle extends laterally out of the outer periphery of the feeding chamber.

[0019] In some specific embodiments, the flexible connection is a soft connection, with one end secured to the manual valve outlet by a first quick-release clamp, and the other end secured to the reactor insertion interface by a second quick-release clamp.

[0020] In some specific embodiments, the reactor insertion interface is stored separately when not in use. Its structure includes an upper flange edge, a middle straight pipe section, and a lower guide cone surface. Bolt holes are evenly distributed around the circumference of the upper flange edge for fixing to the reactor inlet flange bolts, and a sealing gasket is embedded on the flange end face.

[0021] In some specific embodiments, the lifting drive unit is a foot-operated lifting hydraulic cylinder, which is vertically fixed in the center of the rear of the machine base plate. The cylinder body is welded or bolted to the base plate, the pedal is located on the side of the cylinder body, and the output end of the lifting shaft faces upward.

[0022] In some specific embodiments, the connecting seat is a feeding chamber support seat, which is a thick steel plate with its upper surface fully welded to the lower surface of the feeding chamber bottom plate, and its lower surface having ball sockets or screw holes for fixed connection with the upper end of the floating connecting member.

[0023] In some specific embodiments, the floating connector is a floating joint, which is a spherical hinge structure. Its ball head is fitted with the ball socket of the feeding hopper support seat and locked by the pressure cover bolt. The lower end is threadedly connected to the lifting shaft of the foot-operated lifting hydraulic cylinder.

[0024] In some specific embodiments, the guide component of the guide pair is a guide shaft. There are two guide shafts in total, symmetrically arranged on the left and right sides of the lifting drive unit. Each guide shaft is locked to the bottom of the material receiving unit by guide shaft support bolts.

[0025] The sliding component of the guide pair is a linear bearing, which is mounted on a support bracket. The support bracket is a portal frame welded to the base plate of the whole machine. The linear bearing and the guide shaft slide together to form a lifting guide.

[0026] In some specific embodiments, a universal caster with plastic double brake is provided on each of the front left and right sides below the bottom of the machine base plate, and a fixed caster is provided on each of the rear left and right sides. The machine is locked when the caster brake plate is stepped on.

[0027] A protective railing is fixed around the outer perimeter of the material receiving section, and a feeding step plate and step stool are fixed at the rear end of the machine's base plate.

[0028] A counterweight is bolted to the lower part of the base plate of the machine to balance the center of gravity of the material receiving section.

[0029] The beneficial effects of this utility model are:

[0030] Easy to move: The bottom of the machine is equipped with omnidirectional casters with plastic double brakes and fixed casters, which can be moved freely between different work stations by pushing and pulling manually, without the need for forklifts or hoisting equipment, significantly reducing labor intensity and equipment investment.

[0031] Height adjustable: The feeding chamber is raised and lowered by a foot-operated hydraulic cylinder, which can quickly match the feeding port height of different reactors, realizing "one machine for multiple reactors" and saving the investment of multiple fixed platforms.

[0032] Stable lifting: The guide shaft and linear bearing form a double-sided guide pair to prevent the feeding chamber from shaking after it is raised; the floating joint automatically compensates for the concentricity error between the lifting shaft and the feeding chamber support, avoiding jamming and uneven wear, and extending the life of the hydraulic cylinder.

[0033] Safe and reliable: Guardrails and feeding steps provide workers with standing and handhold positions to prevent falls from heights; the rear counterweight counteracts the forward shift of the feeding chamber's center of gravity, preventing the entire machine from tipping over; caster brakes ensure the machine is fixed during feeding. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a mobile lifting feeder according to this utility model;

[0035] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of another embodiment of the present utility model;

[0037] Figure 4 This is a schematic diagram of another embodiment of the present invention.

[0038] In the attached diagram: 1. Feeding chamber; 2. Discharge connector; 3. Manual valve; 4. Flexible connection; 5. Reactor insertion interface; 6. First quick-release clamp; 7. Second quick-release clamp; 8. Guide shaft; 9. Linear bearing; 10. Guide shaft support; 11. Fixed caster; 12. Guardrail; 13. Support bracket; 14. Universal caster with plastic double brake; 15. Foot-operated lifting hydraulic cylinder; 16. Floating joint; 17. Feeding chamber support seat; 18. Feeding step; 19. Step; 20. Counterweight. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0040] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The mobile lifting feeder shown includes:

[0041] Material receiving section, located at the top front of the machine, is used to temporarily store materials to be fed;

[0042] The discharge control unit is fixed at the bottom of the material receiving section and communicates with its inner cavity, and is used to control the discharge of materials.

[0043] The flexible connection part is connected at one end to the outlet of the discharge control part, and at the other end to the reactor interface via a quick-connect clamp, forming a deformable discharge channel.

[0044] The lifting drive unit is vertically fixed at the rear of the machine, with its lifting shaft output end facing upwards, and is used to provide lifting power.

[0045] The connecting seat is rigidly connected to the lower part of the material receiving part and is located directly above the output end of the lifting shaft of the lifting drive part;

[0046] A floating connector is installed between the output end of the lifting shaft of the lifting drive unit and the connecting seat. Its upper end is fixed to the connecting seat and its lower end is fixed to the output end of the lifting shaft. It is used to transmit lifting force and automatically compensate for the concentricity error between the material receiving part and the lifting drive unit.

[0047] The guiding mechanism includes at least two sets of guide pairs symmetrically arranged on both sides of the lifting drive unit. Each set of guide pairs includes a guide member and a sliding member. The guide member is fixed to the bottom of the material receiving part, and the sliding member is fixed to the base plate of the whole machine and slides in cooperation with the guide member to constrain the material receiving part to only move up and down in the vertical direction.

[0048] In this embodiment, refer to Figures 1 to 4 The structural relationships of the modules of this mobile lifting feeder are as follows:

[0049] The material receiving section adopts an open-top cabin structure, located at the top front of the entire machine, with a volume suitable for regular batch feeding. A discharge port is located at the front of the cabin's bottom plate to connect to the subsequent discharge channel. The discharge control unit consists of a rigid discharge channel and an on / off valve. The discharge channel is welded to the discharge port at the bottom of the material receiving section, maintaining communication with the cabin's internal cavity. The valve is installed at the discharge channel's outlet end, with its handle extending laterally to the outer periphery of the cabin, allowing workers to directly operate the valve from a standing position.

[0050] The flexible connection uses an axially expandable corrugated hose. One end is locked to the outlet valve of the discharge control unit via a first quick-release clamp, and the other end is detachably connected to the reactor interface via a second quick-release clamp. The reactor interface is stored independently when not in use. Its structure consists of an upper flange, a middle pipe section, and a lower guide cone surface. Bolt holes are evenly distributed around the circumference of the upper flange for fastening to the reactor inlet flange bolts. An elastic sealing gasket is embedded in the flange end face, forming a compression seal after the bolts are tightened. The outer diameter of the middle pipe section is adapted to the inner diameter of a conventional reactor inlet for easy insertion. The lower guide cone surface is tapered, serving as an insertion guide and reducing the difficulty of docking. The first and second quick-release clamps have the same structure, both consisting of two hinged semi-circular clamps, a locking screw, and a sealing ring. The inner groove of the clamp has a U-shaped cross-section, matching the protruding retaining ring on the outer wall of the reactor interface. The locking screw has a T-shaped handle structure. Rotating the handle can lock or loosen the clamp, enabling quick assembly and disassembly of the flexible connection and the reactor interface.

[0051] The lifting drive unit is a vertically mounted, foot-operated hydraulic jacking device, fixed to the central rear area of ​​the machine's base plate. Its cylinder is secured to the base plate by welding or bolts, ensuring the cylinder axis is perpendicular to the base plate. A foot pedal is located on the side of the cylinder for workers to step on and apply force. The lifting shaft output end faces upwards, used to output lifting power.

[0052] The connecting seat is a thick plate structure, with its upper surface fully welded to the lower surface of the material receiving section's base plate, forming a rigid, integrated structure. A connecting structure is provided on the lower surface of the connecting seat for fixed connection to the upper end of the floating connector. The connecting seat is located directly above the output end of the lifting shaft of the lifting drive unit, allowing the lifting force to be transmitted vertically.

[0053] A floating connector is positioned between the output end of the lifting shaft of the lifting drive unit and the connecting seat. Its upper end is fixedly connected to the lower surface of the connecting seat, and its lower end is fixedly connected to the output end of the lifting shaft. The floating connector adopts a spherical hinge structure, with its ball head transitionally fitting into the ball socket on the lower surface of the connecting seat and secured by a pressure cap bolt. This structure allows for angular floating, automatically compensating for concentricity errors between the material receiving section and the lifting drive unit, preventing lifting jamming or uneven wear.

[0054] The guiding mechanism comprises two sets of guide pairs, symmetrically arranged on the left and right sides of the lifting drive unit. Each guide pair consists of a guide element and a sliding element. The guide element is a guide shaft, secured to the bottom of the material receiving section by guide shaft support bolts. The sliding element is a linear bearing, mounted on a support bracket. The support bracket is a portal frame structure, welded to the base plate of the machine, located below the guide shaft. The inner ring of the linear bearing slides with the outer ring of the guide shaft, forming a lifting guide pair, which constrains the material receiving section to move only vertically, preventing radial swaying during lifting and avoiding lateral shear forces acting on the lifting shaft of the lifting drive unit.

[0055] The machine's base plate has one swivel caster with brakes on each of the front left and right sides, and one fixed-direction caster on each of the rear left and right sides, forming a four-point moving support. Depressing the brakes locks the machine in place. A protective railing is fixed around the material receiving area for workers to hold onto. A feeding step and treads are fixed at the rear of the base plate for workers to stand on and access. A counterweight is fixed at the lower rear of the base plate to balance the forward shift of the material receiving area and prevent the equipment from tipping over when raised.

[0056] II. Dynamic Working Process

[0057] Standby state: The reactor interface is stored independently, the flexible connection is separated from the reactor interface, and the flexible connection part is only connected to the discharge control part.

[0058] Moving and positioning: The worker releases the brakes on the swivel casters, holds the safety railings, and pushes the entire machine to the front of the target reactor.

[0059] Interface installation: Open the reactor inlet cover, insert the reactor interface into the reactor inlet, and after the two flange faces are in contact, evenly distribute the bolts and tighten them alternately to complete the hard connection.

[0060] Loading materials: Bagged or bulk materials are poured directly into the material receiving section, and the bottom valve is kept closed.

[0061] Lifting and Alignment: The worker continuously steps on the foot-operated hydraulic lifting device pedal, extending the lifting shaft upwards. This pushes the connecting seat upwards via the floating connector, causing the material receiving section to rise synchronously. The guide shaft slides within a linear bearing, ensuring the lifting trajectory is vertically aligned. When the center of the discharge control unit is visually aligned with the center of the reactor interface, the worker stops stepping on the pedal and depresses the caster brakes to lock the entire machine in place.

[0062] Flexible connection connection: Place the far end of the flexible connection onto the retaining ring of the reactor interface, close the second quick-release clamp and press down the locking handle. The sealing connection is complete when you hear a locking sound.

[0063] Feeding Operation: After confirming that the casters are locked, the worker holds onto the safety railing, steps onto the base plate first, then the step stools, and climbs onto the feeding step. Once stable, the worker reaches into the compartment to open the bag, opens the valve, and the material, under gravity, sequentially enters the reactor through the discharge control unit, flexible connection, and reactor interface. The guide shaft and linear bearing maintain a continuous sliding fit, ensuring no shaking in the material receiving compartment.

[0064] Lifting compensation: The floating connector automatically floats at an angle during the lifting process to compensate for the concentricity deviation between the material receiving part and the lifting drive part, thus avoiding lifting jamming or uneven wear.

[0065] Lowering and Resetting: After feeding is complete, close the valve, loosen the second quick-release clamp, and disconnect the flexible connection. Engage the caster brakes, gently press the hydraulic unloading pedal, and the lifting shaft will descend at a constant speed under the weight of the material receiving section, while the guide shaft will simultaneously slide back to its initial position.

[0066] Preparation for relocation: After the machine is lowered to its lowest position, the feeder can be moved to the next station by hand to start the next work cycle.

[0067] In some specific embodiments, the material receiving part is a feeding chamber 1, which is a rectangular barrel with an opening at the top and a circular discharge port at the front end of its bottom plate.

[0068] In some specific embodiments, the discharge control unit includes a discharge connector 2 and a manual valve 3; the discharge connector 2 is welded to the discharge port of the bottom plate of the feeding chamber 1, and its outlet flange is locked to the inlet flange of the manual valve 3 by bolts, and the handle of the manual valve 3 extends laterally out of the outer periphery of the feeding chamber 1.

[0069] In this embodiment, and in some specific embodiments, the material receiving section adopts a feeding chamber structure. The feeding chamber is a rectangular barrel with an open top, welded from stainless steel plates, with a bottom plate that slopes from front to back to facilitate material gravity flow. A circular discharge port is provided at the front end of the bottom plate; this discharge port is a through hole used to connect to the downstream discharge channel.

[0070] The discharge control unit consists of a discharge connector and a manual valve. The discharge connector is a short pipe structure, with its upper end welded to the discharge port on the bottom plate of the feeding hopper. The weld is continuous and full to ensure no leakage. A flange is provided at the outlet end of the discharge connector, with bolt holes evenly distributed along its circumference. The inlet end of the manual valve also has a flange, which is bolted to the outlet flange of the discharge connector. The bolts are tightened alternately to ensure a uniform fit between the two flanges. The manual valve handle extends laterally to the outer circumference of the feeding hopper, with the end bent upwards for easy operation by the worker while standing, without needing to lean into the feeding hopper. The valve flow channel is aligned with the discharge connector flow channel, forming a continuous channel.

[0071] II. Dynamic Working Process

[0072] Before material addition, workers install the reactor interfaces. Bagged material is poured directly into the feeding chamber, where it gathers upwards above the discharge port under the action of the inclined bottom plate. At this time, the manual valve is closed, and the valve core blocks the flow channel of the discharge connector, temporarily storing the material inside the chamber.

[0073] After the lifting and alignment are completed, the worker holds the handle and rotates it outward to open the manual valve. The valve core leaves the flow channel, and the material, under gravity, passes through the feeding connector and the manual valve into the subsequent channel. During the feeding process, the handle remains on the outer periphery of the feeding chamber, allowing the worker to adjust the valve opening and control the feeding speed at any time. After feeding is complete, the handle is rotated in the opposite direction to close the valve, resetting the valve core to block the flow channel and prevent residual material from dripping.

[0074] When it is necessary to clean or replace the manual valve, the worker can use tools to loosen the connecting bolts between the feed connector and the valve to remove the valve separately without moving the feed hopper or the main body of the feed connector, making maintenance convenient.

[0075] In some specific embodiments, the flexible connection is a soft connection 4, one end of which is secured to the outlet of the manual valve 3 by a first quick-release clamp 6, and the other end is secured to the reactor insertion interface 5 by a second quick-release clamp 7.

[0076] In some specific embodiments, the reactor insertion interface 5 is stored separately when not in use. Its structure includes an upper flange edge, a middle straight pipe section, and a lower guide cone surface. Bolt holes are evenly distributed around the circumference of the upper flange edge for fixing to the reactor inlet flange bolts, and a sealing gasket is embedded on the flange end face.

[0077] In this embodiment, and in some specific embodiments, the flexible connection adopts a soft connection structure. The soft connection 4 can be a corrugated pipe made of food-grade polyurethane / silicone / rubber / PTFE, etc., capable of axial expansion and contraction. The pipe wall is continuously corrugated, allowing for axial compression or stretching to adapt to height changes during the raising and lowering of the feeding chamber. One end of the corrugated pipe is secured to the outer wall of the manual valve outlet via a first quick-release clamp. After the clamp closes, a radial compression force is generated, ensuring a tight fit between the corrugated pipe end and the valve outlet. The other end of the corrugated pipe is secured to the reactor insertion interface via a second quick-release clamp, with the connection method being the same as the first quick-release clamp. The first and second quick-release clamps have identical structures, both including two hinged semi-circular clamps, a locking screw, and a sealing ring.

[0078] The reactor's insertion interface is an independent component. When not in use, it should be stored horizontally on a dedicated bracket or hook to avoid contact with the ground. Its structure consists of three parts from top to bottom: an upper flange, a middle straight pipe section, and a lower guide cone. The upper flange is annular with several bolt holes evenly distributed along its circumference for bolts to pass through and securely connect to the reactor's inlet flange. An annular groove is formed on the lower end face of the upper flange, within which an elastic sealing gasket is embedded. This gasket protrudes from the flange end face and deforms under pressure after the bolts are tightened, forming a seal. The middle straight pipe section is a straight pipe of equal diameter, its outer diameter matching the inner diameter of the reactor's inlet, allowing for insertion. The lower guide cone is a tapered cone, with an angle that facilitates automatic alignment during insertion.

[0079] II. Dynamic Working Process

[0080] During the material preparation stage, workers retrieve the reactor's insert-type interface from storage, align its lower guide cone with the reactor's feed inlet, and insert it. Once inserted, the upper flange edge aligns with the reactor's feed inlet flange surface. Workers then insert bolts into the bolt holes and tighten them alternately, gradually bringing the two flange surfaces closer together. The gasket deforms under pressure, filling the gap and forming a reliable seal. At this point, the interface and the reactor form a rigid connection.

[0081] The near end of the flexible connector is already secured to the manual valve outlet via a first quick-release clamp at the factory. After the feeding chamber is raised to align with the reactor interface, the worker stretches the bellows at the far end of the flexible connector to the appropriate length, places it on the outer wall of the middle straight pipe section of the reactor's insert interface, and covers the raised retaining ring below the upper flange. Then, the two semi-circular clamps of the second quick-release clamp are closed, and the locking screw is tightened. The inner groove of the clamp compresses the sealing ring radially, causing the inner wall of the sealing ring to fit tightly against the outer wall of the retaining ring, achieving a quick and sealed connection.

[0082] During feeding, the material flows sequentially under gravity through the manual valve, the first quick-release clamp, the flexible corrugated pipe, the second quick-release clamp, and the reactor insertion port before entering the reactor. The expandable nature of the corrugated pipe allows for slight height fluctuations in the feeding chamber during the feeding process without affecting the seal.

[0083] After feeding is completed, the worker loosens the locking screw of the second quick-release clamp in the opposite direction. The clamp loosens, the bellows retracts, and the flexible connection separates from the reactor insert interface. The reactor insert interface can be left on the reactor for future use or removed for cleaning. The first quick-release clamp does not need to be disassembled under normal operating conditions; it is only opened and replaced when the flexible connection is damaged or requires deep cleaning.

[0084] In some specific embodiments, the lifting drive unit is a foot-operated lifting hydraulic cylinder 15, which is vertically fixed in the center of the rear of the machine base plate. The cylinder body is welded or bolted to the base plate, the pedal is located on the side of the cylinder body, and the output end of the lifting shaft faces upward.

[0085] In some specific embodiments, the connecting seat is a feeding chamber support seat 17, which is a thick steel plate. The upper surface is fully welded to the lower surface of the bottom plate of the feeding chamber 1, and the lower surface is provided with ball sockets or screw holes for fixed connection with the upper end of the floating connecting member.

[0086] In some specific embodiments, the floating connector is a floating joint 16, which is a spherical hinge structure. Its ball head is transitionally fitted with the ball socket of the feeding hopper support seat 17 and locked by the pressure cover bolt. Its lower end is threadedly connected to the lifting shaft of the foot-operated lifting hydraulic cylinder 15.

[0087] In some specific embodiments, the guide component of the guide pair is a guide shaft 8. There are two guide shafts 8, which are symmetrically arranged on the left and right sides of the lifting drive unit. Each guide shaft 8 is locked to the bottom of the material receiving unit by a guide shaft support 10 bolt.

[0088] The sliding component of the guide pair is a linear bearing 9, which is mounted on a support bracket 13. The support bracket 13 is a portal frame welded to the base plate of the whole machine. The linear bearing 9 and the guide shaft 8 slide together to form a lifting guide.

[0089] In this embodiment, the lifting drive unit adopts a foot-operated lifting hydraulic cylinder, with its cylinder body vertically fixed to the center of the rear of the machine's base plate. After the outer circumference of the cylinder body mates with a stop opening in the base plate, it is welded to the base plate via reinforcing ribs evenly distributed along the circumference, or connected to the base plate using bolts. A foot pedal protrudes from the side of the cylinder body for workers to step on and apply force. A lifting shaft is located inside the cylinder body, with its output end extending upwards to output vertical lifting power.

[0090] The connecting seat adopts a feeding hopper support base, which is a thick steel plate structure. The upper surface of the support base is connected to the lower surface of the feeding hopper bottom plate by continuous full welding, forming a rigid integral structure. A ball socket is opened at the center of the lower surface of the support base, and the inner wall of the ball socket is spherical to accommodate the ball head of the floating connecting component. A pressure cap is provided above the ball socket, and the pressure cap is locked to the lower surface of the support base by bolts.

[0091] The floating connector uses a floating joint with a spherical hinge structure. The upper end of the floating joint is a ball head, which transitions into the ball socket of the feeding hopper support. After the gland is closed, it is locked with bolts to confine the ball head within the socket, allowing it to float angularly within the socket. The lower end of the floating joint has an internal threaded hole for connection to the external thread of the lifting shaft output end. A back nut is added to prevent loosening after connection.

[0092] The guide component of the guide pair is a guide shaft, of which there are two, symmetrically arranged on the left and right sides of the lifting drive unit. The upper end of each guide shaft passes through the center hole of the guide shaft support, which is bolted to the bottom of the material receiving part, achieving a rigid connection between the guide shaft and the material receiving part. The guide shaft is a smooth, round rod.

[0093] The sliding component of the guide pair is a linear bearing. A portal frame support structure is welded to the base plate of the machine, which consists of columns and a top plate. The linear bearing is mounted on the top plate of the support bracket, with its inner ring slidingly engaging with the outer ring of the guide shaft. The portal frame structure of the support bracket provides stable support for the linear bearing, ensuring smooth sliding.

[0094] II. Dynamic Working Process

[0095] Before feeding, workers step on the pedal of the foot-operated lifting hydraulic cylinder, and the oil pressure inside the cylinder pushes the lifting shaft upward. The output end of the lifting shaft drives the floating joint to rise synchronously through the thread. The ball head of the floating joint rotates in the ball socket of the feeding chamber support, transmitting vertical thrust to the support, which in turn raises the material receiving section. Since the feeding chamber support and the material receiving section are rigidly welded, the material receiving section moves upward as a whole.

[0096] During the lifting process, the two guide shafts move upward synchronously with the material receiving section. The outer ring of the guide shaft slides within the inner ring of the linear bearing. The linear bearing constrains the guide shaft to move only in the vertical direction, preventing radial swaying or deflection of the material receiving section. Due to machining and assembly errors, there may be a slight eccentricity between the axis of the lifting shaft and the center of the ball socket of the feeding hopper support. In this case, the ball head of the floating joint adaptively floats angularly within the ball socket, automatically compensating for the concentricity error and preventing the lifting bearing from jamming or wearing due to lateral bending moment.

[0097] Once the material container is raised to align with the reactor interface, the worker stops stepping on it, the lifting shaft stops extending, and the material container remains at its current height. After feeding is complete, the worker depresses the unloading pedal of the hydraulic cylinder, releasing the oil pressure inside the cylinder. The lifting shaft retracts at a constant speed under the weight of the material container. The floating joint ball head rotates in the opposite direction within the ball socket, and the guide shaft slides down synchronously within the linear bearing, causing the material container to smoothly descend to its initial low position.

[0098] In some specific embodiments, a universal caster with plastic double brake is provided on each of the left and right sides of the front part under the bottom of the machine base plate, and a fixed caster 11 is provided on each of the left and right sides of the rear part. The whole machine is locked when the caster brake plate is stepped on.

[0099] A protective railing 12 is fixed around the outer perimeter of the material receiving section, and a feeding step plate 18 and a step 19 are fixed at the rear end of the machine's base plate.

[0100] A counterweight 20 is bolted to the bottom of the base plate of the machine to balance the center of gravity of the material receiving section.

[0101] In this embodiment, the overall movement and support system consists of four casters. Specifically, one omnidirectional caster with plastic double brakes is located on each of the left and right sides of the front section below the base plate. These casters have wheel frames that can rotate horizontally, enabling the machine to steer. A brake plate is located on the side of the wheel, connected to brake pads via a lever mechanism. When the brake plate is depressed, the brake pads grip the axle, simultaneously locking the caster in both steering and rolling positions. One fixed caster is located on each of the left and right sides of the rear section below the base plate. These casters have wheel frames that are fixed to the base plate and cannot rotate, only allowing for forward and backward rolling. The four casters together form four points of support, ensuring the stability of the entire machine.

[0102] The material receiving area is surrounded by a protective railing, which is welded together with vertical posts and horizontal railings. The lower ends of the posts are welded to the base plate of the machine, and the upper ends are connected to the railings. The railing is at a moderate height, allowing workers to maintain their balance while standing. An opening is provided at the front of the feeding compartment for easy insertion of material bags; another opening is provided at the rear of the feeding compartment where it connects to the feeding step, facilitating worker access.

[0103] The rear end of the machine's base plate is fixed with a feeding step plate and step stools. The feeding step plate is a horizontal plate structure with anti-slip stripes on the surface, providing a place for workers to stand and feed materials. The step stools are located in front of the feeding step plate and are stepped up in a stepped manner. When climbing, workers can first step on the base plate and then step on the step stools to finally reach the feeding step plate.

[0104] A counterweight is bolted to the lower rear of the machine's base plate. The counterweight is a metal block, its weight designed to withstand the forward tilting moment when the material receiving section is fully loaded. Bolts pass through mounting holes on the counterweight and lock into threaded holes on the base plate, suspending the counterweight below the base plate. Located at the rear of the machine, the counterweight balances the forward shift of the material receiving section's center of gravity, preventing the machine from tipping over when raised.

[0105] II. Dynamic Working Process

[0106] During the positioning process, the worker kicks up the brake pads of the swivel casters with plastic double brakes, releasing the brake pads and unlocking the casters. The worker then grips the horizontal railing at the rear of the protective barrier and pushes the entire machine forward. The front swivel casters freely steer, guiding the machine along the predetermined path; the rear fixed casters maintain straight-line movement, providing stable support. Once the machine is pushed in front of the target reactor, the worker depresses the brake pads of the swivel casters, locking the casters and preventing the machine from moving or turning, thus completing the positioning and locking process.

[0107] During the feeding operation, the worker first steps onto the machine's base plate, then onto the step ramps, easily climbing onto the feeding ramp using the height difference. Once stable, the worker leans forward, naturally holding onto the protective railing around the feeding chamber for balance. Then, the worker reaches into the feeding chamber to break open the bag and feed the material. During this process, the protective railing absorbs the force exerted by the worker's forearm, preventing them from falling into the feeding chamber.

[0108] When the material receiving compartment is full, the center of gravity shifts forward. As the foot-operated lifting hydraulic cylinder raises the material receiving compartment, the forward tilting moment of the entire machine increases. At this time, the counterweight at the rear of the base plate, being located at the very end of the machine, generates a counter-torque, counteracting the forward tilting moment. The operator can observe that the entire machine remains stable during the lifting process, without any tendency to tilt forward. After feeding is completed, the material receiving compartment descends, the forward tilting moment decreases, and the counterweight continues to play a balancing role until the entire machine returns to its low position.

[0109] When the machine needs to be moved to the next workstation, the worker first releases the brakes on the swivel casters, then holds the safety railings and pushes the machine. During the pushing process, although the counterweight is suspended below the base plate, it will not loosen or swing due to the reliable bolt fastening, maintaining synchronous movement with the machine. After the machine reaches the new workstation, the worker presses the brake pedal again to lock it, and repeats the feeding operation.

[0110] This embodiment utilizes four-point caster support and dual brake locking to achieve flexible movement and reliable fixation of the entire machine; protective railings and step structures provide workers with safe operating positions and climbing paths; and a rear counterweight balances the forward tilting torque to ensure safety during lifting operations. All components work together to form a complete system for movement, operation, protection, and balance.

[0111] Working principle:

[0112] 1. When the equipment is not in use, the reactor plug-in interface is placed separately and not connected to the flexible connection.

[0113] 2. During use, the worker first needs to release the brakes on the universal caster with plastic double brakes, and then hold the guardrail and push the entire machine to the front of the reactor where materials need to be fed.

[0114] 3. Open the reactor docking interface, insert the reactor insertion interface into the reactor inlet, and fix the upper flange edge to the reactor docking interface flange edge with bolts.

[0115] 4. After connecting the plug-in interface of the reactor, put the material into the feeding chamber.

[0116] 5. After the materials have been placed, step on the foot-operated lifting hydraulic cylinder to raise the equipment. When the lifting height is approximately level with the height of the reactor's insertion port, the worker should then push the equipment back to the starting position for fine-tuning.

[0117] 6. After adjustment, lock the universal caster with plastic double brake, and then the worker connects the flexible connection to the reactor insertion interface using quick-release clamps.

[0118] 7. After connection is complete, open the manual valve to prepare for feeding.

[0119] 8. When feeding materials, it is necessary to confirm again whether the universal caster with plastic double brake is locked. After confirming that it is locked, the worker can hold the guardrail, step on the base plate and then step on the foot pedal to stand on the feeding step plate, and then put his hands into the feeding chamber to break the bag and feed the materials.

[0120] 9. The feeding hopper support is welded to the base plate below the feeding hopper. The feeding hopper support is connected to the foot-operated lifting hydraulic cylinder via a floating joint. The function of the floating joint is to prevent the feeding hopper support and the lifting shaft of the foot-operated lifting hydraulic cylinder from becoming misaligned, thus preventing lifting difficulties.

[0121] 10. The guide shaft is fixed to the bottom plate of the feeding hopper via a guide shaft support and bolts. A linear bearing is mounted on the support bracket, working in conjunction with the guide shaft to provide axial positioning and prevent swaying during lifting, while also preventing excessive lateral shear force from damaging the telescopic shaft of the hydraulic cylinder.

[0122] 11. Purpose of counterweight: Since the feeding chamber is located at the front of the machine, the center of gravity shifts forward. To prevent the equipment from tipping over after it is raised, a counterweight is placed at the bottom of the rear of the equipment.

[0123] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0124] It facilitates the transfer of the feeder by workers, who can simply push or pull the equipment to move it to other workstations. No manual handling or borrowing of other handling equipment is required.

[0125] To accommodate different docking heights, a foot-operated hydraulic cylinder is used to move the feeder up and down, enabling docking of reactors at different heights.

[0126] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mobile lifting feeder, characterized in that, include: A material receiving section is located at the top front of the machine and is used to temporarily store materials to be fed. The discharge control unit is fixed at the bottom of the material receiving part and communicates with its inner cavity, and is used to control the discharge of material; The flexible connection part has one end connected to the outlet of the discharge control part, and the other end is detachably connected to the reactor interface through a quick-connect clamp to form a deformable discharge channel. The lifting drive unit is vertically fixed at the rear of the machine, with its lifting shaft output end facing upwards, and is used to provide lifting power. A connecting seat is rigidly connected to the lower part of the material receiving part and is located directly above the output end of the lifting shaft of the lifting drive part; A floating connector is provided between the output end of the lifting shaft of the lifting drive unit and the connecting seat. Its upper end is fixed to the connecting seat and its lower end is fixed to the output end of the lifting shaft. It is used to transmit lifting force and automatically compensate for the concentricity error between the material receiving part and the lifting drive unit. The guiding mechanism includes at least two sets of guide pairs symmetrically arranged on both sides of the lifting drive unit. Each set of guide pairs includes a guide member and a sliding member. The guide member is fixed to the bottom of the material receiving part, and the sliding member is fixed to the base plate of the whole machine and slides in cooperation with the guide member to constrain the material receiving part to lift only in the vertical direction.

2. The mobile lifting feeder according to claim 1, characterized in that: The material receiving part is a feeding chamber (1), which is a rectangular barrel with an opening at the top and a circular discharge port at the front end of its bottom plate.

3. The mobile lifting feeder according to claim 1, characterized in that: The discharge control unit includes a discharge connector (2) and a manual valve (3); the discharge connector (2) is welded to the discharge port of the bottom plate of the feeding chamber (1), and its outlet flange is locked to the inlet flange of the manual valve (3) by bolts. The handle of the manual valve (3) extends laterally out of the outer periphery of the feeding chamber (1).

4. The mobile lifting feeder according to claim 1, characterized in that: The flexible connection part is a soft connection (4), one end of which is secured to the outlet of the manual valve (3) by the first quick-release clamp (6), and the other end is secured to the reactor insertion interface (5) by the second quick-release clamp (7).

5. The mobile lifting feeder according to claim 1, characterized in that: The reactor insertion interface (5) is stored separately when not in use. Its structure includes an upper flange edge, a middle straight pipe section, and a lower guide cone surface. Bolt holes are evenly distributed around the circumference of the upper flange edge for fixing to the reactor feed port flange bolts. A sealing gasket is embedded on the flange end face.

6. The mobile lifting feeder according to claim 1, characterized in that: The lifting drive unit is a foot-operated lifting hydraulic cylinder (15), which is vertically fixed in the center of the rear part of the base plate of the whole machine. The cylinder body is welded or bolted to the base plate, the pedal is located on the side of the cylinder body, and the output end of the lifting shaft faces upward.

7. The mobile lifting feeder according to claim 1, characterized in that: The connecting seat is a feeding chamber support seat (17), which is a thick steel plate. The upper surface is fully welded to the lower surface of the bottom plate of the feeding chamber (1), and the lower surface is provided with ball sockets or screw holes for fixed connection with the upper end of the floating connector.

8. The mobile lifting feeder according to claim 1, characterized in that: The floating connector is a floating joint (16), which is a spherical hinge structure. Its ball head is transitionally fitted with the ball socket of the feeding chamber support seat (17) and locked by the pressure cover bolt. The lower end is threadedly connected to the lifting shaft of the foot-operated lifting hydraulic cylinder (15).

9. The mobile lifting feeder according to claim 1, characterized in that: The guide component of the guide pair is a guide shaft (8). There are two guide shafts (8), which are symmetrically arranged on the left and right sides of the lifting drive unit. Each guide shaft (8) is bolted to the bottom of the material receiving unit by a guide shaft support (10). The sliding component of the guide pair is a linear bearing (9), which is mounted on a support bracket (13). The support bracket (13) is a portal frame and welded to the base plate of the whole machine. The linear bearing (9) and the guide shaft (8) slide together to form a lifting guide.

10. The mobile lifting feeder according to claim 1, characterized in that: The machine has a universal caster with plastic double brake on each of the left and right sides at the front of the bottom plate and a fixed caster on each of the left and right sides at the rear. The machine is locked when the caster brake is stepped on. A protective guardrail (12) is fixed around the outer perimeter of the material receiving section, and a feeding step plate (18) and a step pedal (19) are fixed at the rear end of the base plate of the whole machine. A counterweight (20) is bolted to the bottom of the base plate of the machine to balance the center of gravity of the material receiving section.

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