Vaccine injection device for animal husbandry and veterinary medicine

Abstract

The animal husbandry veterinary vaccine injection device comprises a shell, an injection frame, an alternate lifting mechanism, a rotary driving mechanism and a control unit, an injection window is arranged at the bottom of the shell in a matched mode, and the injection frame comprises a hollow hanging column, an outer cylinder, a connecting frame and an injection unit; the hollow davit is fixedly installed in the shell above the injection window in the vertical direction, the hollow davit is sleeved with the outer cylinder in a sliding mode in the vertical direction, handles are symmetrically arranged on the front side and the rear side of the outer cylinder, and the handles extend out of the shell; injection units are symmetrically arranged on the two sides of the outer cylinder, each injection unit comprises an injection seat, an injector and a piston driving mechanism, the piston driving mechanisms are connected with the control unit, and the injection seats and the outer cylinder are arranged in parallel at intervals; the device is unique in structure and ingenious in design, the problems that a traditional device is uneven in dosage and frequent in needle replacement are solved through the design of automatic precise quantitative injection and alternate disinfection, the vaccination efficiency and safety are improved, the cross infection risk and cost are reduced, and the large-scale epidemic prevention requirement in the livestock raising field is met.

Description

Technical Field

[0001] The invention belongs to the technical field of animal husbandry and veterinary medicine, and particularly relates to an animal husbandry and veterinary vaccine injection device. Background Art

[0002] Vaccination is a key measure in the animal husbandry and veterinary field for preventing and controlling animal infectious diseases. Vaccination strengthens animal populations' immunity, effectively preventing the spread of disease and ensuring the healthy development of the livestock industry. Failure to vaccinate can lead not only to outbreaks of infectious diseases in animal populations but also to severe economic losses and even threats to human health. Precise and quantitative vaccination is crucial to ensuring vaccine effectiveness and safety. It ensures that each animal receives the same dose of vaccine, achieving optimal immune responses and minimizing side effects caused by overdosing or underdosing.

[0003] However, traditional livestock and veterinary vaccine injection devices have significant defects in actual application, which directly affect the vaccination effect and operational efficiency. First, inaccurate dosage control is the core problem of existing devices. Traditional syringes mostly rely on manual injection pistons, and the injection dosage depends entirely on the operator's experience and feel, which makes it difficult to achieve standardized control. When the dosage is insufficient, the vaccine cannot stimulate the animal's immune response, resulting in immunization failure; excessive injection may cause animal stress reactions or increased organ burden, and even endanger life; uneven dosage causes some vaccines to be ineffective, increasing the cost of vaccine use. Secondly, traditional devices usually use a single needle design. To avoid cross-infection, the needle or the entire syringe must be manually replaced or the needle must be disinfected after each injection, which is not only time-consuming and labor-intensive, but also costly. Frequent replacement of syringes and needles and disinfection of needles will also significantly reduce the vaccination speed, making it difficult to meet the high-efficiency needs of large-scale farms. Summary of the Invention

[0004] In response to the defects and problems of existing livestock and veterinary vaccine injection devices, the present invention provides a livestock and veterinary vaccine injection device with a unique structure and ingenious design. It aims to solve the problems of uneven dosage and frequent needle changes in traditional devices through automated precise quantitative injection and alternating disinfection design, thereby improving vaccination efficiency and safety, reducing cross-infection risks and costs, and meeting the needs of large-scale epidemic prevention in the livestock field.

[0005] The solution adopted by the present invention to solve its technical problems is: A livestock and veterinary vaccine injection device, including a shell, an injection frame, an alternating lifting mechanism, a rotation drive mechanism and a control unit, the bottom of the shell is matched with an injection window, the injection frame includes a hollow hanging column, an outer cylinder, a connecting frame and an injection unit, the hollow hanging column is vertically fixedly installed in the shell above the injection window, the outer cylinder is vertically slidably sleeved on the hollow hanging column, and handles are symmetrically provided on the front and back sides of the outer cylinder, and the handles extend out of the shell; injection units are symmetrically provided on both sides of the outer cylinder, the injection unit includes an injection seat, a syringe and a piston drive mechanism, the piston drive mechanism is connected to the control unit, the injection seat is arranged parallel to the outer cylinder, and the syringe It is matched and installed in the injection seat, and the piston handle of the syringe is connected to the driving end of the piston drive mechanism; the injection seat is hinged to the outer cylinder through a connecting frame to form a parallelogram structure frame. The alternating lifting mechanism is matched and installed on the outer cylinder above the two injection units and is connected to the control unit. The control unit can control the alternating lifting and lowering of the two syringes through the alternating lifting mechanism; the disinfection support mechanism includes a core rod and a positioning block. The core rod is rotatably mounted in the hollow hanging column, and the bottom end of the core rod extends downward from the hollow hanging column and is coaxially connected to the positioning block. An elastic member is provided between the positioning block and the outer cylinder. Under natural conditions, the elastic member will push the outer cylinder upward to the extreme position.

[0006] A disinfection box is also fixed to the outer ring surface of the positioning block. A hollow hanging column extends upward from the top of the core rod and is installed with a rotating drive mechanism. The control unit can drive the core rod to drive the disinfection box to rotate to the bottom of the raised syringe through the rotating mechanism.

[0007] The handle includes a handle rod and a gripping frame. Guide grooves are symmetrically provided vertically on the outer shells on the front and rear sides of the outer cylinder. One end of the handle rod is fixedly connected to the side wall of the outer cylinder, and the other end of the handle rod extends outward through the guide groove and out of the outer shell and is connected to the gripping frame.

[0008] The control unit includes a controller, a control panel, a power supply and a position sensor. The control panel is installed on the outer wall of the shell and is connected to the controller for setting controller parameters. The controller is arranged in the shell and is connected to the rotation drive mechanism, the alternating lifting mechanism and the piston drive mechanism; the power supply is arranged in the shell and is connected to the controller. The position sensor is installed on the positioning block and is connected to the controller for detecting the distance between the outer cylinder and the positioning block.

[0009] A fixing frame is matched on the top of the hollow sling, and the fixing frame is fixedly connected to the inner wall of the shell. The outer cylinder is vertically slidably sleeved on the hollow sling below the fixing frame.

[0010] A limit groove communicating with the interior is vertically provided on the outer ring wall of one side of the outer cylinder, and a limit rod is matched and installed on the outer ring surface of the hollow hanging column inside the limit groove, and the outer end of the limit rod is matched and inserted into the limit groove.

[0011] The piston drive mechanism includes a motor, a gear frame, a gear, a rack and a piston handle holder. The gear frame is fixedly installed on the side of the injection seat away from the outer cylinder. The gear is rotatably installed in the gear frame and is connected to the motor. The motor is controlled and connected to the control unit. The rack is vertically slidably installed in the gear frame between the gear and the injection seat, and the rack is engaged with the gear. The piston handle holder is matched with the top of the rack. The piston handle holder is flush with the piston handle of the syringe in the injection seat on the same side and is clamped on the piston handle.

[0012] The alternating lifting mechanism includes a driving seat fixedly mounted on the top of the outer cylinder, and U-shaped electromagnets are symmetrically provided on the left and right sides of the driving seat. The openings of the two electromagnets are both facing outward and are connected to the control unit, and the piston rod of the syringe is located in the opening. A magnetic block is installed on the flange of the syringe under each electromagnet. When the electromagnet is energized and started, it will attract the magnetic block below upward to move it upward and adsorb it together with the electromagnet, so that when the magnetic block is lifted, the syringe and the injection seat are lifted synchronously, thereby achieving the purpose of controlling the alternating lifting of the two syringes.

[0013] The connecting frame includes a connecting rod group symmetrically installed on the outer walls of the front and rear sides of the outer cylinder. The connecting rod group includes at least two connecting rods arranged in parallel along the vertical direction. The middle part of the connecting rod is rotatably installed on the outer cylinder. The left and right ends of the connecting rod are respectively hinged to the injection seats of the adjacent injection units. When the injection seat on the left side of the outer cylinder is translated and lifted, the injection seat on the right side of the outer cylinder will be synchronously translated and lowered under the action of the front and rear connecting rod groups.

[0014] Beneficial effects of the present invention: The animal husbandry and veterinary vaccine injection device provided by the present invention has the following beneficial effects: 1. The present invention provides a livestock and veterinary vaccine injection device. By housing the syringe within a housing, this device eliminates the risk of accidental needle contact and subsequent injuries when not injecting. Furthermore, the automated disinfection process reduces the possibility of cross-infection.

[0015] 2. The present invention provides a livestock and veterinary vaccine injection device, in which the piston drive mechanism adopts a stepper motor and a rack and pinion transmission structure, which can accurately control the injection dose and ensure the consistency and accuracy of each injection volume, which is crucial for the effective vaccination.

[0016] 3. The present invention provides a livestock and veterinary vaccine injection device. The alternating lifting mechanism allows two syringes to work alternately. One syringe can be used for injection while the other can be automatically disinfected and prepared, greatly improving the efficiency of continuous operation. It is particularly suitable for large-scale animal vaccination scenarios.

[0017] 4. The present invention provides a livestock and veterinary vaccine injection device with a handle design that makes it easy for the operator to hold and control the up and down movement of the injection frame, simplifying the operation process; at the same time, the parameters are preset through the control panel, making the entire injection process more intuitive and easy to control.

[0018] 5. The present invention provides a livestock and veterinary vaccine injection device with an automatic disinfection support mechanism to ensure that each syringe is fully disinfected before and after use, effectively preventing the spread of pathogens and ensuring the hygiene and safety of the vaccination process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the shell of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the injection stand of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the hollow suspender of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the alternating lifting mechanism of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the injection unit of the present invention.

[0025] Figure 7 It is a schematic diagram of the use state of the present invention.

[0026] Numbers in the figure: 1 is the shell, 11 is the guide groove, 12 is the injection window, 2 is the syringe, 21 is the injection tube, 22 is the piston rod, 23 is the needle, 24 is the piston handle, 3 is the piston drive mechanism, 31 is the motor, 32 is the gear rack, 33 is the gear, 34 is the rack, 35 is the piston handle holder, 4 is the injection frame, 41 is the outer cylinder, 411 is the limit groove, 43 is the handle, 431 is the handle rod, 432 is the holding frame, 44 is the hollow hanging column, 441 is the limit plug rod, 45 is the limit column, 46 is the connecting frame, 461 is the connecting rod, 47 is the fixing frame, 5 is the injection seat, 6 is the disinfection support mechanism, 61 is the core rod, 62 is the positioning block, 63 is the top spring, 64 is the disinfection box, 7 is the alternating lifting mechanism, 71 is the drive seat, 72 is the electromagnet, 73 is the magnetic block, and 8 is the rotation drive mechanism. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and examples. Example

[0028] This embodiment provides a vaccine injection device for animal husbandry and veterinary medicine, such as Figure 1-7 As shown, it includes a housing 1, an injection stand, an alternating lifting mechanism 7, a rotation drive mechanism 8 and a control unit, as shown Figure 2 As shown, the bottom of the shell is matched with an injection window 12. When the vaccine is injected, the needle 23 of the syringe 2 will extend downward from the shell 1 through the injection window 12 and penetrate into the animal's body to complete the vaccine injection. When the injection is not in progress, the syringe is stored in the shell 1, thereby preventing the operator from being accidentally stabbed.

[0029] The injection stand 4 includes a hollow hanging column 44, an outer cylinder 41, a connecting frame 46 and an injection unit. The hollow hanging column 44 is fixedly installed vertically in the housing above the injection window. Figure 5 As shown, a fixing frame 47 is matched with the top of the hollow suspension column 44, and the fixing frame 47 is fixedly connected to the inner walls of the outer shell on the front and rear sides. The outer cylinder slides vertically and is sleeved on the hollow suspension column below the fixing frame. There are many ways for the outer cylinder 41 to slide vertically on the hollow suspension column 44, for example: a limiting frame is coaxially installed inside the upper and lower ends of the outer cylinder 41, and the limiting frame includes a shaft sleeve that slides vertically on the hollow suspension column 44, and a plurality of connecting rods are evenly spaced along the circumferential direction on the outer ring surface of the shaft sleeve, and the other end of the connecting rod is fixedly connected to the inner wall of the outer cylinder 41; a limiting groove 411 that is connected to the interior is vertically provided on the outer ring wall of one side of the outer cylinder 41, and a limiting rod 441 is matched with the outer ring surface of the hollow suspension column inside the limiting groove 411, and the outer end of the limiting rod is matched and inserted into the limiting groove, thereby constraining the sliding trajectory of the outer cylinder 41 so that it can only slide vertically along the hollow suspension column 44, that is, it can only slide axially along the hollow suspension column 44.

[0030] like Figure 1 and Figure 3 As shown, handles 43 are symmetrically provided on the front and rear sides of the outer cylinder 41, and the handles extend outward from the outer shell. The handles 43 on the outside of the outer shell 1 can drive the outer cylinder 41 to slide up and down along the hollow suspension column in the outer shell. Specifically: the handle 43 includes a handle rod 431 and a gripping frame 432, and guide grooves 11 are symmetrically provided vertically on the outer shell 1 on the front and rear sides of the outer cylinder 41. The length of the guide groove 11 is the same as the length of the limit groove 411. The tail end of the handle rod is fixedly connected to the side wall of the outer cylinder, and the head end of the handle rod extends out of the outer shell through the guide groove and is connected to the gripping frame. When the handle rod on the gripping frame is held and moved up to the top along the guide groove 11, the outer cylinder 41 slides upward along the hollow suspension column to the extreme position, so that the limit rod 441 moves to the bottom of the limit groove 411.

[0031] Injection units are symmetrically arranged on both sides of the outer cylinder. The injection units include an injection seat 5, a syringe 2 and a piston drive mechanism 3. The piston drive mechanism 3 is connected to the control unit. The injection seat 5 is arranged parallel to the outer cylinder 41 and spaced apart. The syringe 2 is matched and installed in the injection seat, and the needle of the syringe 2 is set downward. The piston handle of the syringe is connected to the driving end of the piston drive mechanism. The control unit can control the quantitative movement of the syringe piston through the piston drive mechanism, thereby achieving precise quantitative injection. Specifically: like Figure 6 As shown, the injection tube 21 of the syringe 2 is coaxially sleeved in the injection seat 5, and the piston drive mechanism 3 includes a motor 31, a gear rack 32, a gear 33, a rack 34 and a piston handle holder 35. The gear frame 32 is fixedly mounted on the side of the injection seat 5 away from the outer cylinder, and the gear 33 is rotatably mounted in the gear frame 32. The motor 31 is fixedly mounted on the gear frame 32 and is control-connected to the control unit. The motor shaft of the motor 31 is transmission-connected to the gear 33. The motor 31 is an existing micro-stepping motor. The rack 34 is vertically slidably mounted in the gear frame 32 between the gear 33 and the injection seat 5, and the rack is meshed with the gear. The top of the rack is matched with the piston handle holder 35. The piston handle holder 35 is flush with the piston handle of the syringe in the injection seat 5 on the same side and is clamped on the piston handle 24. The control unit can drive the gear 33 to rotate precisely and quantitatively through the motor 31. When the gear 33 rotates, it will drive the rack 34 to slide along a fixed distance vertically. When the rack 34 slides along a fixed distance vertically, the rack 34 will drive the piston handle 24 through the top piston handle holder 35, driving the piston rod 22 of the syringe 2 to drive the piston in the injection tube 21 of the syringe 2 to move precisely and quantitatively, thereby achieving the purpose of precise injection.

[0032] The injection seat is hinged to the outer cylinder through a connecting frame to form a parallelogram-shaped structural frame. The alternating lifting mechanism is matched and installed on the outer cylinder above the two injection units and is connected to the control unit. The control unit can control the alternating lifting and lowering of the two syringes through the alternating lifting mechanism. Specifically: like Figure 5 and Figure 7 As shown, the connecting frame includes a connecting rod group symmetrically installed on the outer walls of the front and rear sides of the outer cylinder 41. The connecting rod group includes at least two connecting rods 461 arranged in vertical parallel intervals. The middle part of the connecting rod 461 is rotatably installed on the outer cylinder. The left and right ends of the connecting rod 461 are respectively hinged to the injection seats of the adjacent injection units. When the injection seat on the left side of the outer cylinder is translated and lifted, the injection seat on the right side of the outer cylinder will be synchronously translated and lowered under the action of the front and rear connecting rod groups.

[0033] The alternating lifting mechanism includes a driving seat 71 fixedly mounted on the top of the outer cylinder, and U-shaped electromagnets 72 are symmetrically provided on the left and right sides of the driving seat 71. The openings of the two electromagnets are both facing outward and are connected to the control unit, and the piston rod of the syringe is located in the opening. A magnetic block 73 is installed on the flange of the injection tube under each electromagnet. When the electromagnet is energized and started, it will attract the magnetic block below upward to move it upward and adsorb it together with the electromagnet, so that when the magnetic block is lifted, the syringe and the injection seat are lifted synchronously, thereby achieving the purpose of controlling the alternating lifting of the two syringes.

[0034] like Figure 3 As shown, the disinfection support mechanism includes a core rod 61 and a positioning block 62. The core rod is rotatably mounted in a hollow hanging column, and the bottom end of the core rod extends downward from a hollow hanging column and is coaxially connected to the positioning block. An elastic member is provided between the positioning block and the outer tube. The elastic member will push the outer tube upward to the limit position under a natural state. A disinfection box 64 is also fixedly mounted on the outer ring surface of the positioning block. The disinfection box is filled with disinfection cotton. A hollow hanging column extends upward from the top of the core rod and a rotary drive mechanism is installed. The control unit can drive the core rod to drive the disinfection box to rotate to the bottom of the raised syringe through the rotary mechanism. There are various structures of the rotary drive mechanism. The rotary drive mechanism of this embodiment includes a rotary motor connected to the control unit. A hollow hanging column extends upward from the top of the core rod 61 and is connected to the motor shaft of the rotary motor. The control unit can drive the core rod 61 to drive the positioning block and the disinfection box 64 to rotate at a fixed angle through the rotary motor.

[0035] The control unit includes a controller, a control panel, a power supply and a position sensor. The control panel is installed on the outer wall of the shell and is connected to the controller for setting controller parameters, including but not limited to the injection volume. The controller is set in the shell and is connected to the rotary drive mechanism, the alternating lifting mechanism and the piston drive mechanism; the power supply is set in the shell and is connected to the controller. The position sensor is installed on the positioning block and is connected to the controller for detecting the distance between the outer cylinder and the positioning block. When using the livestock and veterinary vaccine injection device provided in this embodiment for batch vaccine injection, first, two new syringes filled with vaccines are matched and installed in the two injection seats, and then the required injection volume and other parameters are preset on the outer wall of the shell through the control panel. Then, hold the two handles with both hands, align the injection window of the shell with the injection site of the animal, and then press down the two handles. Since the shell is blocked by the animal's limbs, the two handles will drive the outer cylinder to drive the entire injection frame to move downward. During the downward movement of the injection frame, the syringe needle at the higher position (i.e. above the disinfection box) of the two syringes will be inserted into the disinfection box for disinfection, and the syringe needle at the lower position will pass through the injection window and extend out of the shell to pierce the injection site of the animal. The controller will detect the distance between the outer cylinder and the positioning block through the position sensor to determine the penetration depth of the needle. When the needle is fully inserted, the controller will adjust the position according to the preset parameters. The numerical control is to control the piston drive mechanism at the lower position, drive the piston handle of the syringe to quantitatively retract into the injection tube, thereby realizing precise liquid injection. After a single precise quantitative injection is completed and the shell is separated from the injection part, the injection frame will automatically reset under the action of the elastic member. The controller will detect the distance between the outer tube and the positioning block through the position sensor to determine whether the injection frame is reset. When the injection frame is lifted and reset as a whole, the controller will control the alternating lifting mechanism to control the alternating lifting mechanism 7 to start, drive the two syringes to alternately lift and change positions, so that the sterilized syringe descends to prepare for the next injection, and the syringe that has been injected is lifted to prepare for disinfection. During this process, the controller will synchronously control the rotary drive mechanism 8 to rotate the positioning block 62 through the core rod 61, and turn the disinfection box 64 to the bottom of the lifted syringe, so that the syringe needle used for the previous injection can be disinfected during the next injection.

[0036] The animal husbandry and veterinary vaccine injection device provided in this embodiment significantly improves the safety, accuracy and efficiency of the vaccination process through its innovative design. It effectively avoids the risk of operators accidentally touching the needle, while ensuring that each syringe is fully disinfected before and after use to prevent cross infection. The piston drive mechanism controlled by a stepper motor realizes precise dosage control, ensuring the consistency and accuracy of each injection volume. The alternating lifting mechanism allows the two syringes to work efficiently and alternately, greatly improving the efficiency of continuous operation, and is particularly suitable for large-scale animal vaccination. In addition, the highly automated design of the equipment simplifies the operating process, reduces the need for manual intervention, and makes the entire vaccination process more intuitive and convenient. In summary, this vaccine injection device provides strong support for achieving safe and efficient large-scale animal vaccination.

[0037] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A livestock and veterinary vaccine injection device, characterized in that: It includes a shell, an injection stand, an alternating lifting mechanism, a rotation drive mechanism and a control unit. The bottom of the shell is matched with an injection window. The injection stand includes a hollow hanging column, an outer cylinder, a connecting frame and an injection unit. The hollow hanging column is fixedly installed vertically in the shell above the injection window. The outer cylinder is vertically slidably sleeved on the hollow hanging column, and handles are symmetrically provided on the front and back sides of the outer cylinder, and the handles extend out of the shell; injection units are symmetrically provided on both sides of the outer cylinder, and the injection unit includes an injection seat, a syringe and a piston drive mechanism. The piston drive mechanism is connected to the control unit. The injection seat is arranged parallel to the outer cylinder and spaced apart. The syringe is matched with the injection seat. The injection seat is hinged to the outer cylinder through a connecting frame to form a parallelogram structure frame. The alternating lifting mechanism is matched and installed on the outer cylinder above the two injection units and is connected to the control unit. The control unit can control the alternating lifting and lowering of the two syringes through the alternating lifting mechanism. The disinfection support mechanism includes a core rod and a positioning block. The core rod is rotatably mounted in the hollow hanging column, and the bottom end of the core rod extends downward from the hollow hanging column and is coaxially connected to the positioning block. An elastic member is provided between the positioning block and the outer cylinder. The elastic member will push the outer cylinder upward to the limit position in a natural state.

2. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: A disinfection box is also fixed to the outer ring surface of the positioning block. A hollow hanging column extends upward from the top of the core rod and is installed with a rotating drive mechanism. The control unit can drive the core rod to drive the disinfection box to rotate to the bottom of the raised syringe through the rotating mechanism.

3. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: The handle includes a handle rod and a gripping frame. Guide grooves are symmetrically provided vertically on the outer shells on the front and rear sides of the outer cylinder. One end of the handle rod is fixedly connected to the side wall of the outer cylinder, and the other end of the handle rod extends outward through the guide groove out of the outer shell and is connected to the gripping frame.

4. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: The control unit includes a controller, a control panel, a power supply and a position sensor. The control panel is installed on the outer wall of the shell and is connected to the controller for setting controller parameters. The controller is arranged in the shell and is connected to the rotation drive mechanism, the alternating lifting mechanism and the piston drive mechanism; the power supply is arranged in the shell and is connected to the controller. The position sensor is installed on the positioning block and is connected to the controller for detecting the distance between the outer cylinder and the positioning block.

5. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: A fixing frame is matched on the top of the hollow sling, and the fixing frame is fixedly connected to the inner wall of the shell. The outer cylinder is vertically slidably sleeved on the hollow sling below the fixing frame.

6. The animal husbandry and veterinary vaccine injection device according to claim 5, characterized in that: A limit groove communicating with the interior is vertically provided on the outer ring wall of one side of the outer cylinder, and a limit rod is matched and installed on the outer ring surface of the hollow hanging column inside the limit groove, and the outer end of the limit rod is matched and inserted into the limit groove.

7. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: The piston drive mechanism includes a motor, a gear frame, a gear, a rack and a piston handle holder. The gear frame is fixedly installed on the side of the injection seat away from the outer cylinder. The gear is rotatably installed in the gear frame and is connected to the motor. The motor is controlled and connected to the control unit. The rack is vertically slidably installed in the gear frame between the gear and the injection seat, and the rack is engaged with the gear. The piston handle holder is matched with the top of the rack. The piston handle holder is flush with the piston handle of the syringe in the injection seat on the same side and is clamped on the piston handle.

8. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: The alternating lifting mechanism includes a driving seat fixedly mounted on the top of the outer cylinder, and U-shaped electromagnets are symmetrically provided on the left and right sides of the driving seat. The openings of the two electromagnets are both facing outward and are connected to the control unit, and the piston rod of the syringe is located in the opening. A magnetic block is installed on the flange of the syringe under each electromagnet. When the electromagnet is energized and started, it will attract the magnetic block below upward to move it upward and adsorb it together with the electromagnet, so that when the magnetic block is lifted, the syringe and the injection seat are lifted synchronously, thereby achieving the purpose of controlling the alternating lifting of the two syringes.

9. The animal husbandry and veterinary vaccine injection device according to claim 1, characterized in that: The connecting frame includes a connecting rod group symmetrically installed on the outer walls of the front and rear sides of the outer cylinder. The connecting rod group includes at least two connecting rods arranged in parallel along the vertical direction. The middle part of the connecting rod is rotatably installed on the outer cylinder. The left and right ends of the connecting rod are respectively hinged to the injection seats of the adjacent injection units. When the injection seat on the left side of the outer cylinder is translated and lifted, the injection seat on the right side of the outer cylinder will be synchronously translated and lowered under the action of the front and rear connecting rod groups.

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