Counter top rice serving apparatus

Abstract

The application discloses a counter type rice serving equipment for rice distribution, which comprises a rack with a height of a rice feeding opening similar to or flush with a rice outlet, a rice serving machine arranged below the rice feeding opening, and a meal plate conveying device arranged in the rack and reciprocating between the rice outlet and a rice outlet area in a swing arm posture, wherein the rice outlet area is lower than the rice outlet. Compared with the prior art, the meal plate conveying device is significantly simplified in structural composition, the swing arm transmission form is used to replace the original chain transmission form, and the stability of the overall operation of the equipment is improved. The swing arm structure is connected to the mounting rack and the conveying device, so that the swing arm structure can realize the action effect of buffering deceleration and return energy storage at any stroke.

Description

TECHNICAL FIELD

[0001] The present application relates to the mechanical field, and particularly relates to a counter type rice serving device which can reduce the operation height of canteen operators at the ground level. BACKGROUND

[0002] The rice serving machine is a special type of equipment specially applied in the food industry, which is generally used in restaurants with a certain scale, and the user group is the person in charge of the operation of the restaurant, and the use object is a large number of diners. The characteristics of this part of the use object are that the number is large and the demand for rice is different. In the past, the conventional rice serving mode can be divided into rice pricing occasions or rice non-pricing occasions. The former generally needs quantitative rice serving staff, and the latter generally uses self-help rice containers to solve the problem by the diners.

[0003] These two ways have their own characteristics but also have certain inconvenience. Among them, the former has different operation levels of the rice serving staff, and even for the same amount of rice serving requirements, the final allocated rice may have different amounts, which is difficult to fully meet the needs of diners. The latter can obviously allow each diner to obtain the required amount of rice, but since it needs to be operated by diners frequently, the measures for rice preservation or anti-falling are difficult to guarantee, and the later diners may not be able to enjoy soft and delicious rice, or a large amount of food may be wasted due to unstable rice serving. Therefore, both ways have room for improvement.

[0004] Therefore, a rice serving device capable of quantitative distribution of rice, unattended for a long time, and better guaranteeing the consistency of rice supply has emerged. The emergence of this special equipment allows the controllable and quantitative mechanical process to be integrated into the rice distribution activity. Each diner can quickly select the meal weight range according to their appetite, and the machine can quickly and accurately pick up the corresponding amount of rice and distribute it to the diner's utensils placed in the corresponding meal area. It is efficient, clean and accurate. Generally, the height of the meal is adapted to the height of the diner, which determines that the height of the rice serving machine outlet is generally the same as the height of the meal tray. Therefore, the height of the rice storage container is higher than the height, which leads to the fact that the conventional rice serving equipment needs to use lifting devices to realize the replenishment of rice when facing dozens or even hundreds of kilograms of rice containers. This brings certain inconvenience to the operators of the restaurant and increases the volume and manufacturing cost of the equipment.

[0005] In view of the above situation, the use of such equipment by users is indeed disturbed, and there are explorations and practices of such problems in the prior art, for example, as shown inFigure 1 As shown in the prior art of the authorized publication No. CN219383013U, a miniaturized rice serving device is disclosed on July 21, 2023, which places the height of the rice serving device at a level not exceeding the position of the tableware, so that the rice outlet is much lower than the tableware placement point. How to realize the transfer of tableware, the structure adopted is to move the tray placing tableware along the L-shaped conveying chain structure, so that it can displace horizontally and vertically between the tableware placement position and the rice outlet, thereby meeting the corresponding rice serving demand. At the same time, for the operator who needs to supplement the rice, it is no longer necessary to lift the equipment to a higher height to supplement the rice, but it can be simply supplemented at a lower position, solving the defects existing in the above technical status.

[0006] However, the prior art still has some defects that need to be improved. Specifically, the chain transmission method is a relatively unstable system, which is prone to become unstable due to the shaking of the chain. Even if it is switched to a conveyor belt or other flexible transmission member, this problem is difficult to avoid. Although rice is not a food that is easy to collapse, the inevitable shaking of the conveying environment will cause the rice to fall, and the rice that falls into the equipment will often cause a series of subsequent food safety problems and equipment operation problems. In addition, the structure of the chain is relatively complex and has poor integrity, which brings some inconvenience to the later maintenance or production. Although the structure has an easily defined transmission trajectory form, it undoubtedly tests the stability of the equipment. Furthermore, the above-mentioned chain transmission structure also has a problem, that is, the utilization of kinetic energy is relatively simple, and the output of kinetic energy needs to be stopped after the tableware is in place, so the transmission efficiency is low.

[0007] Therefore, in summary, the above-mentioned prior art still has room for improvement, and it is necessary to reasonably optimize the existing structural problems. SUMMARY

[0008] In view of the technical defects in the background art, the present application proposes a counter-type rice serving device, which solves the above-mentioned technical problems and meets the actual needs. The specific technical scheme is as follows:

[0009] The counter-type rice serving device comprises a rack, the upper end of the rack is provided with a rice inlet and a rice outlet, the height of the rice inlet is similar to or flush with the height of the rice outlet, the rack is provided with a rice serving machine below the rice inlet, and the rice serving area of the rice serving machine is lower than the rice outlet. The rack is also provided with a tray conveying device that moves back and forth between the rice outlet and the rice serving area. In addition, it also comprises:

[0010] The tray conveying device is composed of a power unit fixed in the frame to output torque, a swing arm connected with the output end of the power unit and hinged in the frame, an elastic traction unit with one end fixed and the other end connected with the swing arm after passing through a fixed pulley mechanism in the frame, a tray fixing position hinged to the swing end of the swing arm, and a tray balance linkage connected between the tray fixing position and the hinge of the swing arm.

[0011] Wherein, the elastic traction unit turns around the fixed pulley mechanism, and the fixed pulley mechanism is set to the following state: when the swing arm reciprocates between the serving opening and the serving area, the elastic traction unit is always wound on the fixed pulley mechanism without being unwound, and when the swing arm moves towards the serving opening or the serving area, the elastic traction unit generates elastic force in the opposite direction due to its elastic potential energy.

[0012] As a further technical solution of the present application, the elastic traction unit is composed of a non-elastic flexible traction rope and an elastic body fixed to one end of the flexible traction rope, the flexible traction rope is wound on the fixed pulley mechanism and the other end is fixed to the surface of the swing arm or in the swing arm, and the other end of the elastic body is hinged in the frame.

[0013] As a further technical solution of the present application, the elastic body is any one of a metal spring, a metal spring plate or an elastic rubber piece.

[0014] As a further technical solution of the present application, the position of the swing arm to which the other end of the flexible traction rope is connected is located in the region between the hinge of the swing arm in the frame and the hinge of the tray fixing position at the swing end of the swing arm.

[0015] As a further technical solution of the present application, the tray balance linkage is composed of a sun gear coaxial with the hinge of the swing arm and the frame, a planet gear fixedly connected with the hinge of the tray fixing position, and a transmission belt body connected between the sun gear and the planet gear.

[0016] As a further technical solution of the present application, the power unit is composed of a rotary power output device fixed in the frame, and a driven gear coaxial with and fixedly connected to the swing arm.

[0017] As a further technical solution of the present application, the driven gear is a driven gear coaxial with and fixedly connected to the swing arm, and the number of teeth of the driven gear is greater than that of the transmission gear connected to the rotary power output device, and the transmission gear is a gear.

[0018] As a further technical scheme of the present application, the tray fixing position is composed of a connecting arm hinged at the swing end of the swing arm and connected with the tray balance linkage transmission, a tray placing piece fixedly connected with the connecting arm, and a retaining ring surrounding the tray placing piece and fixedly connected therewith, wherein the tray placing piece is any one of a flat plate, a through opening in the form of a through hole, or a blind slot in the form of a blind hole.

[0019] As a further technical scheme of the present application, the rack is further provided with a guide chamber connected between the rice outlet and the rice outlet area, and the side wall of the guide chamber is provided with an avoidance track for the swing arm to reciprocally swing.

[0020] As a further technical scheme of the present application, the rack is further provided with a guide chamber connected between the rice outlet and the rice outlet area, and the side wall of the guide chamber is provided with an avoidance track for the swing arm to reciprocally swing.

[0021] The present application has the beneficial effects of:

[0022] Compared with the prior art, the present application significantly simplifies the structure of the conveying device reciprocating between the rice outlet area and the rice outlet of the rice serving machine, replaces the original chain transmission form with a swing arm transmission form, improves the stability of the overall operation of the equipment, and ingeniously utilizes the swing arm structure linked to the mounting rack and the conveying device, thereby realizing stable control of the rice and tableware transmission process. The swing arm structure can realize the action effect of buffer deceleration and return energy storage at any stroke through the elastic device, which not only greatly improves the stability of the rice reciprocating between the rice outlet and the rice outlet area, but also optimizes the energy consumption of the driving rice serving equipment to a certain extent, thereby reducing the production, manufacturing and maintenance costs of the equipment, and ensuring the practicality of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A tableware conveying structure schematic diagram of the prior art.

[0024] Figure 2 A cabinet type rice serving equipment appearance structure schematic diagram.

[0025] Figure 3 A cabinet type rice serving equipment appearance structure schematic diagram. Figure 2 A cabinet type rice serving equipment appearance structure schematic diagram.

[0026] Figure 4 A cabinet type rice serving equipment appearance structure schematic diagram. Figure 1 .

[0027] Figure 5 This is a side view of the counter-type food serving device described in this invention.

[0028] Figure 6 This is a schematic diagram of the main structure of the counter-type meal serving device described in this invention. Figure 2 .

[0029] Figure 7 This is a partial enlarged schematic diagram of the counter-type meal serving device described in this invention.

[0030] Figure 8 This is a schematic diagram of the structure of the tray conveying device described in this invention. Figure 1 .

[0031] Figure 9 This is a schematic diagram of the structure of the tray conveying device described in this invention. Figure 2 .

[0032] The components include: frame 1, food inlet 2, food outlet 3, food serving machine 4, food serving area 5, power unit 6, rotary power output device 60, driven component 61, transmission component 62, swing arm 7, counterweight 70, fixed pulley mechanism 8, elastic traction unit 9, flexible traction rope 90, elastic body 91, plate fixing position 10, connecting arm 100, plate placement component 101, retaining ring 102, plate balance linkage component 11, star wheel 110, planetary wheel 111, transmission belt body 112, guide chamber 12, avoidance track 120, guide port 121, and plate 13. Detailed Implementation

[0033] The embodiments of the present invention will be described below with reference to the accompanying drawings and related examples. The embodiments of the present invention are not limited to the following examples, and the present invention relates to the relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0034] Combination Figures 2 to 9 As shown, the counter-style meal serving equipment includes a frame 1. The upper end of the frame 1 has a food inlet 2 and a food outlet 3. The height of the food inlet 2 is similar to or level with the height of the food outlet 3. A meal serving machine 4 is installed below the food inlet 2 on the frame 1, with the food outlet area 5 of the meal serving machine 4 being lower than the food outlet 3. The frame 1 also includes a tray conveying device that travels between the food outlet 3 and the food outlet area 5. In addition, it also includes:

[0035] The tray conveying device is composed of a power part 6 fixed in the frame 1 to output torque, a swing arm 7 in transmission connection with the output end of the power part 6 and at the same time hinged in the frame 1, an elastic traction part 9 in connection with the swing arm 7 after one end is fixed and the other end passes through a fixed pulley mechanism 8 in the frame 1, a tray fixing position 10 hinged to the swing end of the swing arm 7, and a tray balance linkage 11 in transmission connection between the tray fixing position 10 and the hinge of the swing arm 7.

[0036] Wherein, after the elastic traction part 9 turns around the fixed pulley mechanism 8, the fixed pulley mechanism 8 is arranged in the following state: when the swing arm 7 reciprocates between the rice outlet 3 and the rice outlet area 5, the elastic traction part 9 is always wound on the fixed pulley mechanism 8 without being taken out, and when the swing arm 7 moves towards the direction close to the rice outlet 3 or the rice outlet area 5, the elastic traction part 9 generates elastic force opposite to the moving direction due to its own elastic potential energy, and when the tray fixing position 10 stops at the rice outlet 3 / rice outlet area 5, the elastic traction part 9 stores the elastic potential energy for swinging the swing arm 7 towards the opposite rice outlet area 5 / rice outlet 3.

[0037] As a prerequisite, unless otherwise specified, the "tableware" mentioned in the foregoing and the "tray" mentioned in the following both refer to containers for holding rice rather than tools for eating, for example, they do not refer to "chopsticks", "forks", "spoons" and other utensils without the function of holding a large amount of food, but refer to "rice bowls", "rice boxes", "trays" and other containers capable of holding a large amount of food.

[0038] It should be pointed out here that, due to the need to achieve the technical effect and the way to achieve the technical effect, the setting positions of the frame 1, the upper rice outlet 2, the rice outlet 3, the rice serving machine 4 and the rice outlet area 5 can be set according to the prior art patent with the authorization publication number CN219383013U and the drawings shown in the Figure 1 In order to achieve the technical effect of the height of the rice serving being basically level with the height of the upper rice, based on the existing structure of the rice serving machine, the upper rice outlet 2 and the rice outlet 3 are set to be level or similar in height, regardless of whether it is in the present application or refers to the existing small rice serving equipment, and the similar height specifically refers to the height difference between the two, but the difference is small, and the height of any position can be reached without additional heightening of the operator or the diners, otherwise, the height relationship between the rice outlet 3 and the upper rice outlet 2 is similar to other existing technologies, and the operator needs to use a lifting device to lift the rice container to the height of the rice outlet area 5, which is level with the rice outlet 3.

[0039] Referring to Figures 2 to 6As shown, in the present application, the setting structure of the rice serving machine 4 can also be set according to the existing rice serving machine device. Generally, the rice storage container of the rice serving machine 4 should be located at the top end of the equipment, and the opening of the rice adding position should face upwards, which is beneficial to adapt to the upper rice opening 2 on the rack 1 described in the present application, and the quantitative rice serving structure should be set below the rice storage container in cooperation with the rice adding position of the rice storage container, and the rice outlet should be set on the rice outlet side of the quantitative rice serving structure. Finally, the area opposite to the rice outlet forms the rice outlet area 5. In combination with the setting position of the rice serving machine 4 in the present application, it can be understood that the height of the rice outlet area 5 should be much lower than the height of the rice outlet 3, which can be considered as a position close to the bottom in the rack 1.

[0040] Referring to Figures 3 to 7 As shown, in the present application, the rack 1 should be understood as a necessary connecting and fixing frame which has complete components, can set components other than those described in the present application, and can also set other necessary component parts such as electrical control structure, power structure, moving pulley structure, shell, hinged door and the like. For example, the outside of the rack 1 can be wrapped with a shell to protect the safety of the internal structure and prevent foreign matters from entering the rice serving space. The bottom of the rack 1 can be provided with a pulley assembly to facilitate the operator to customize the deployment position of the rice serving equipment. In the inner cavity of the rack 1, in addition to the physical structure disclosed in the present application, necessary operation structures such as electrical control box and display screen, or necessary connection structures such as line board, energy line, control line, sensor and the like can be set in the fixed hole and groove positions for reasonable arrangement. The above-mentioned setting mode can be adaptively set by the person skilled in the art in combination with the technical common sense and the existing technical mode.

[0041] In combination with Figure 2 And Figure 3 As shown, further, the rice outlet 3 and the upper rice opening 2 of the present application can preferably be provided with an operable hinged door structure. For example, a sliding plate which can slide along the horizontal direction of the opening is set as a cover plate at the upper rice opening 2 or the rice outlet 3, so as to ensure that in the non-use state, the interference factors from the outside will not enter the inside of the rice serving equipment, and the inconvenience of causing difficulties to the normal use or daily maintenance of the rice serving equipment will be avoided.

[0042] The application mode of the present application will be described in detail in combination with the specific structure of the tray conveying device described in the present application.

[0043] Referring in particular to Figure 8 And Figure 9As shown, in the present application, the swing arm 7 is a lever swing arm structure hinged in the frame 1, there is a relatively fixed hinged axis fixed in the frame 1, and the swing arm 7 is driven to rotate around its own hinged point by the torque output by the power part 6, and the swing arm 7 is movably connected to the tray fixing position 10 on one side of the hinged point, and as an optional adaptive setting, the other side can be appropriately provided with a counterweight 70 for balancing the gravity center of the swing arm 7, so that the swing arm 7 can obtain a more stable movement process when rotating around its own hinged point on the frame 1 under the action of the torque of the power part 6. And through the action of the elastic traction part 9, when the elastic traction part 9 changes from the normal state to the energy storage state of elastic deformation, the elastic traction part 9 is fixedly connected to the frame 1 at one end and positioned on the swing arm 7 at the other end, and changes position with the swing of the swing arm 7, thereby changing the length of the elastic traction part 9, promoting the change of the state of the elastic traction part 9, so that in the stage of elastic energy storage deformation of the elastic traction part 9, it will gradually slow down the action of the swing arm 7 by resisting the torque output by the power part 6, and play the effect of deceleration buffer, on the contrary, in the stage of elastic energy release deformation of the elastic traction part 9, it will help the torque output of the power part 6, and make the action of the swing arm 7 overcome the difficulty of resistance smaller, play the effect of acceleration and energy saving, compared with the prior art, the effect of the elastic traction part 9 helps to simplify the parts of the tray conveying device and obtain more stable and efficient meal serving efficiency.

[0044] At this time, referring to Figures 6 to 8 As shown, as a necessary component, the fixed pulley assembly 8 is also fixed at a certain position in the frame 1, which plays a key reversing role. Without the participation of the fixed pulley assembly 8, it is difficult to accurately achieve the state of buffering and deceleration when approaching the meal outlet 3 / meal area 5 and power saving and acceleration when away from the meal outlet 3 / meal area 5 by relying only on the setting of the elastic traction part 9, because at this time the area with elastic potential will also move in the plane with the swing of the swing arm 7, and the release direction of the elastic potential will change constantly, thereby making the transmission structure of the swing arm 7 extremely random.

[0045] Therefore, the fixed pulley assembly 8 in the present application needs to be arranged in the frame 1, so that the elastic traction part 9 can realize reversing, so that part of the elastic traction part 9 will not move in the plane with the swing of the swing arm 7, and the other part can accurately apply the corresponding stress state to the swing arm 7 with the swing of the swing arm 7, thereby realizing the required action mode of the swing arm 7, that is, buffering and deceleration when approaching the meal outlet 3 / meal area 5 and power saving and acceleration when away from the meal outlet 3 / meal area 5. As a necessary explanation, it can be like Figure 3 , 4, 6, 7, the fixed pulley assembly 8 includes a fixed pulley and a position where the fixed pulley is hingedly fixed on the frame 1, the position where the fixed pulley is hingedly fixed should be in the area between the two ends of the swing arm 7, so as to achieve the required stress effect as described above, so that the elastic traction part 9 can have a part of the area which can stably linearly make elastic deformation or restore elastic deformation, and further stably apply elastic force in the reciprocating swing action of the swing arm 7, when the swing arm 7 is close to the rice outlet 3 / the rice area 5, the elastic traction part 9 occurs elastic energy storage deformation, resisting the torque output by the power part 6, so that the swing arm 7 slows down, when the swing arm 7 is away from the rice outlet 3 / the rice area 5, the accumulated elastic potential energy is released, accelerating the action of the swing arm 7 to quickly approach the rice area 5 / the rice outlet 3, and finally realizing the required use effect.

[0046] Further, the tray fixing position 10 will change position relative to the swing arm 7 with the reciprocating swing of the swing arm 7 in the up-down direction, as known to all, the tray fixing position 10 needs to place the tray 13 and also needs to ensure that the tray 13 maintains a flat attitude whether it has rice or not, so there needs to be a transmission connection between the swing arm 7 and the tray fixing position 10, that is, the tray balance linkage 11, so that when the tray fixing position 10 swings with the swing arm 7, it can always maintain an attitude state, ensuring the stability of the tray 13. In the present application, the tray balance linkage 11 is integrally provided on the swing arm 7 and is transmission connected between the tray fixing position 10 and the hinge between the swing arm 7, realizing high integration of the overall structure, more suitable for the compact layout requirement of the rice serving equipment, and effectively utilizing the power of the swing arm 7 around the shaft to drive the tray balance linkage 11 adaptive transmission, and further realizing the dynamic balance of the tray fixing position 10.

[0047] In summary, the above structure of the present application is relatively simple, compared with the existing rice conveying structure, it is more stable, reliable and easy to operate.

[0048] In combination Figure 7 And Figure 8As shown in one of the preferred embodiments of the present application, the elastic traction part 9 is composed of a non-elastic flexible traction rope 90 and an elastic body 91 fixedly connected to one end of the flexible traction rope 90, the flexible traction rope 90 is wound on the fixed pulley mechanism 8 and the other end is fixedly connected to the surface of the swing arm 7 or in the swing arm 7, the other end of the elastic body 91 is hingedly connected to the rack 1, the elastic traction part 9 is designed to efficiently realize the transmission of elastic force and reduce the influence of the planar motion on the force relationship caused by the reversing action of the fixed pulley assembly 8 and the swinging of the swing arm 7, the elastic body 91 is arranged at the end away from the swing arm 7 with the fixed pulley assembly 8 as the boundary, so that no matter how the swing arm 7 moves, the elastic body 91 will only have an elastic deformation movement in one direction, and the flexible traction rope 90 is arranged at the end close to the swing arm 7, which does not have obvious elastic deformation ability, but due to its flexibility, it can constantly change the position of the swing arm 7 relative to the fixed pulley assembly 8, perfectly meeting the energy storage and buffering needs of the elastic traction part 9.

[0049] As a further optimization of the previous embodiment, the elastic body 91 is any one of a metal spring, a metal spring plate or an elastic rubber part, it should be said that any other elastic part that can meet the linear elastic force output or input can also meet the needs of the present application, for example, a vacuum elastic piston with certain recovery ability is also a selectable option, however, the embodiment of the present application has lower cost and simpler structure, which is more suitable for the development trend of simple and low-cost rice serving equipment.

[0050] As a further optimization of the previous embodiment, the position of the swing arm 7 connected by the other end of the flexible traction rope 90 is located in the area between the rack 1 hinged to the swing arm 7 and the swing arm 7 hinged to the tray fixing position 10 at the swinging end of the swing arm 7, this embodiment optimization combines the previous Figures 3 to 8 As shown, the specific reasons have been described in the foregoing, and will not be expanded here.

[0051] Referring to Figures 7 to 9As shown in the preferred embodiment of the present application, the tray balancing linkage 11 is composed of a sun gear 110 coaxial with the hinge of the swing arm 7 and the frame 1, a planet gear 111 fixedly connected with the hinge of the tray fixing position 10, and a transmission belt body 112 connected between the sun gear 110 and the planet gear 111. The sun gear 110 is coaxial with the hinge of the swing arm 7, so that the relative position of the sun gear 110 can be kept unchanged. The planet gear 111 is fixedly connected with the hinge of the tray fixing position 10, so that the planet gear 111 can make a revolution around the sun gear 110. Under the action of the transmission belt body 112, the tray fixing position 10 can realize the required dynamic balance with the rotation of the planet gear 111. Generally, the sun gear 110 can be fixed relative to the swing arm 7, and the planet gear 111 can be rotatable relative to the swing arm 7, so that the required dynamic balance effect can be better achieved. Further, the sun gear 110 and the planet gear 111 are preferably gears, and the transmission belt body 112 is preferably a gear belt, a synchronous belt or a chain.

[0052] Referring to Figures 3 to 6 , Figure 8 and Figure 9 As shown in one of the preferred embodiments of the present application, the power part 6 is composed of a rotary power output device 60 fixed in the frame and a driven part 61 fixedly connected with the swing arm 7 coaxially and in transmission connection with the rotary power output device 60. In this embodiment, the rotary power output device 60 outputs the required torque under the supply of energy or power, and transmits the torque to the swing arm 7 fixedly connected coaxially with the driven part 61 through the transmission connection of the driven part 61. The transmission is accurate and controllable, and the transmission structure is simple.

[0053] As a further optimization of the previous embodiment, the driven part 61 is a driven gear fixedly connected coaxially with the swing arm 7, and the number of gear teeth is greater than that of the transmission part 62 connected with the rotary power output device. The transmission part 62 is a gear. In this transmission structure, the arrangement is equivalent to a gear reduction structure, which ensures that the rotary power output device 60 rotating at high speed can output the required torque at a reasonable speed and force. Specifically, the rotary power output device 60 can be a general motor, a servo motor, a servo rotary cylinder, a general rotary cylinder or other power output parts that can output torque.

[0054] Referring to Figure 5 , Figures 7 to 9As shown in the one of the preferred embodiments of the present application, the tray fixing position 10 is composed of a connecting arm 100 hingedly connected to the swinging end of the swing arm 7 and connected to the tray balance linkage 11, a tray placing member 101 fixedly connected to the connecting arm 100, and a retaining ring 102 fixedly connected around the tray placing member 101. The tray placing member 101 is any one of a flat plate, a through-hole shaped opening member, or a blind hole shaped slot member. This arrangement facilitates the tray fixing position 10 to reduce the interference with the active track of the internal components of the rice serving device as much as possible, and also ensures the stable placement of the tableware. The retaining ring 102 can avoid the horizontal shaking displacement of the tray 13.

[0055] Referring to Figure 3 and Figure 4 As shown in the one of the preferred embodiments of the present application, the rack 1 is further provided with a guide chamber 12 connected between the rice outlet 3 and the rice serving area 5. The side wall of the guide chamber 12 is provided with an avoidance track 120 for the reciprocating swing of the swing arm 7. This guide chamber 12 can avoid the possible obstruction and interference of the tray fixing position 10 when switching positions. The avoidance track 120 is more conducive to the arrangement of the linkage structure, and facilitates the tray conveying device to convey the tray 13 to and from the rice outlet 3 and the rice serving area 5.

[0056] Referring to Figure 3 and Figure 4 As shown in the one of the preferred embodiments of the present application, the rack 1 is further provided with a guide chamber 12 connected between the rice outlet 3 and the rice serving area 5. The side wall of the guide chamber 12 is provided with an avoidance track 120 for the reciprocating swing of the swing arm 7. This guide chamber 12 can avoid the possible obstruction and interference of the tray fixing position 10 when switching positions. The avoidance track 120 is more conducive to the arrangement of the linkage structure, and facilitates the tray conveying device to convey the tray 13 to and from the rice outlet 3 and the rice serving area 5. Figure 8 As a further optimization of the previous embodiment, the rack 1 is further provided with a guide chamber 12 connected between the rice outlet 3 and the rice serving area 5. The side wall of the guide chamber 2 is provided with an avoidance track 120 for the reciprocating swing of the swing arm 7, which is used to avoid the connecting arm 100. One side of the outer wall of the avoidance track 120 is fixedly connected to the outer wall of the rice serving machine 4, and the other side is fixedly connected to the rack 1. The avoidance track 120 is provided with a horn-shaped guide opening 121 at one end close to the rice serving area 5. This embodiment is a further optimization of the previous embodiment. The guide chamber 12, the rack 1, and the rice serving machine 4 are fixed at the same time, which helps to improve the stability of the overall structure. The connecting arm 100 can move freely in the avoidance track 120, which reduces the probability of external substances entering the device. The guide opening 121 facilitates the connecting arm 100 to quickly enter and exit the avoidance track 120, avoiding vibration caused by mutual impact.

[0057] Compared with the prior art, the present application significantly simplifies the structure of the conveying device reciprocating between the rice outlet area and the rice outlet, replaces the original chain transmission with a swing arm transmission, improves the stability of the overall operation of the equipment, and ingeniously utilizes the swing arm structure linked to the mounting frame and the conveying device to control the smoothness of the rice and tableware transmission process. The swing arm structure can realize the action effect of buffer deceleration and return energy storage at any stroke through the elastic device, which not only greatly improves the stability of the rice reciprocating between the rice outlet and the rice outlet area, but also optimizes the energy consumption of the driving rice equipment to a certain extent, thereby reducing the production, manufacturing and maintenance cost of the equipment, while ensuring the practicability of the equipment.

[0058] The above is only the preferred embodiment of the present application. It should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A counter rice serving device, comprising a frame, an upper end of the frame is provided with a rice receiving port and a rice outlet port, the height of the rice receiving port is similar to or flush with the rice outlet port, a rice serving machine is arranged below the rice receiving port of the frame, and the rice serving area of the rice serving machine is lower than the rice outlet port, and a tray conveying device is further arranged in the frame to reciprocate between the rice outlet port and the rice serving area, characterized in that: the tray conveying device is composed of a power unit fixed in the frame to output torque, a swing arm drivingly connected with the output end of the power unit and hinged in the frame, an elastic traction unit having one end fixed and the other end connected with the swing arm after passing through a fixed pulley mechanism in the frame, a tray fixing position hinged at the swing end of the swing arm, and a tray balance linkage drivingly connected between the tray fixing position and the hinged position of the swing arm, and a counterweight is arranged at the other swing end of the swing arm to balance the gravity center of the swing arm. In the tray conveying device, the elastic traction unit is turned around the fixed pulley mechanism, and the fixed pulley mechanism is arranged in the following state: when the swing arm reciprocates between the rice outlet port and the rice serving area, the elastic traction unit is always wound on the fixed pulley mechanism without being unwound, and when the swing arm moves towards the rice outlet port or the rice serving area, the elastic traction unit generates elastic force in the opposite direction due to its elastic potential energy, and the elastic potential energy of the elastic traction unit is stored when the tray fixing position stops at the rice outlet port / rice serving area and the traction swing arm swings towards the opposite rice serving area / rice outlet port. The elastic traction unit is composed of a flexible traction rope and an elastic body fixedly connected with one end of the flexible traction rope, the flexible traction rope is wound on the fixed pulley mechanism and fixedly connected with the other end of the swing arm, and the other end of the elastic body is hinged in the frame. The position of the swing arm to which the other end of the flexible traction rope is connected is located in the region between the hinged position of the swing arm in the frame and the hinged position of the tray fixing position at the swing end of the swing arm. The tray balance linkage is composed of a sun gear coaxial with the hinged position of the swing arm and the frame, a planet gear fixedly connected with the hinged position of the tray fixing position, and a transmission belt body connected between the sun gear and the planet gear. The power unit is composed of a rotary power output device fixed in the frame, and a driven gear coaxially fixedly connected with the swing arm and drivingly connected with the rotary power output device, and the rotary power output device is a servo motor or a servo rotary air cylinder. The elastic body is any one of a metal spring, a metal spring plate, or an elastic rubber part.

2. The counter rice serving apparatus according to claim 1, characterized by The driven gear is a driven gear coaxially and fixedly connected with the swing arm, and the number of gear teeth of the driven gear is greater than that of the transmission gear connected with the rotary power output device, and the transmission gear is a gear.

3. The counter rice serving apparatus according to claim 1, characterized by, The tray fixing position is composed of an arm hinged at the swing end of the swing arm and drivingly connected with the tray balance linkage, a tray placing part fixedly connected with the arm, and a retaining ring fixedly connected around the tray placing part, and the tray placing part is any one of a flat part, an open part with a through hole, or a slotted part without a through hole.

4. The counter rice serving apparatus according to claim 1, characterized by The frame is further provided with a guide chamber connected between the rice outlet port and the rice serving area, and the side wall of the guide chamber is provided with an avoiding track for the reciprocating swing of the swing arm.

5. The counter rice serving apparatus according to claim 1, characterized by ​ 6. The counter rice serving apparatus according to claim 4, characterized by The rack is further provided with a guide chamber connected between the rice outlet and the rice outlet area, a side wall of the guide chamber is provided with an avoiding track for avoiding the connecting arm when the swing arm reciprocally swings, one side outer wall of the avoiding track is fixedly connected with the outer wall of the rice serving machine, one side outer wall is fixedly connected with the rack, and the avoiding track is provided with a horn-shaped guide opening at one end close to the rice outlet area.

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