Automatic feeding device for laboratory animals

Abstract

The utility model belongs to the field of animal feeding, especially for a kind of automatic feeding device for laboratory animal feeding, including rearing cage, four equidistance water troughs are fixedly connected to the front side of rearing cage, when water is fed into water distribution pipe, the water in water trough is supplemented by opening the first solenoid valve corresponding to each water trough, the water level in water trough is monitored by cooperating infrared sensor, water is automatically supplemented when water level reduces to the height of water supplement, water supplement stops after rising to appropriate height, the extension frame is power-connected to electric sliding rail, the weighing frame is power-connected to electric push rod, the electronic scale is fixedly connected to the lower side of connecting plate in weighing frame, the connecting plate is abutted with electronic scale, the feed in collection frame is poured, the feed is weighed by electronic scale, and the feed after weighing is moved left and right by electric sliding rail, the third solenoid valve is opened, and the feed is uniformly discharged from feeding pipe, and the continuous, stable and accurate nutrition supply for experimental animal is realized.

Description

Technical Field

[0001] This utility model relates to the field of animal husbandry, specifically to an automatic feeding device for laboratory animal husbandry. Background Technology

[0002] Currently, the animal cages commonly used in laboratories suffer from significant lack of automation. Watering and feeding rely entirely on manual operation, requiring frequent refills and feedings. This model is prone to human error, leading to untimely or improper feeding, directly impacting the growth and development of laboratory animals and the reliability of data. Existing automated feeding equipment also generally suffers from insufficient control precision, making it difficult to accurately control the amount of feed given each time or ensure even distribution of feed in the trough, frequently resulting in localized accumulation or insufficient supply. These problems severely affect the standardized feeding of laboratory animals and the accuracy of research data.

[0003] To address the shortcomings of traditional feeding methods, there is an urgent need to develop an automated feeding device for laboratory animals. This device should employ a precise metering mechanism to ensure accurate and controllable feed dispensing each time, with feed evenly distributed in the feeding trough. Simultaneously, it should feature reliable water level monitoring and automatic water replenishment functions, eliminating the uncertainties associated with manual operation. This automated feeding device not only reduces the workload of staff but, more importantly, provides laboratory animals with a continuous, stable, and precise nutritional supply. Utility Model Content

[0004] The purpose of this invention is to provide an automatic feeding device for laboratory animal husbandry, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic feeding device for laboratory animals, comprising a feeding cage, four equidistant water racks fixedly connected to the front side of the feeding cage, the water racks extending into the inside of the feeding cage, an infrared sensor fixedly connected to the right side of the upper end face of each water rack, the infrared sensor extending into the water rack and capable of monitoring the water level in the water rack, a first solenoid valve connected to the left side of the upper end face of each water rack and communicating with the inside of the water rack, two mounting plates fixedly connected to the front end face of the feeding cage, a water distribution pipe fixedly connected to the mounting plate, and a water inlet pipe fixedly connected between the water distribution pipe and each of the first solenoid valves, so that when water is introduced into the water distribution pipe, water can be added to the water rack by opening the first solenoid valve corresponding to each water rack, and the infrared sensor monitors the water level in the water rack, automatically adding water when the water level drops to the replenishment height, and stopping adding water when the water level rises to a suitable height;

[0006] The rear end face of the feeding cage is fixedly connected to two symmetrical limiting frames. Each limiting frame contains a slider that slides vertically. A vertical threaded shaft is rotatably connected to the left limiting frame, and the threaded shaft is threadedly connected to the slider. A connecting frame is fixedly connected between the two sliders, and an electric slide rail is fixedly connected to the connecting frame. The electric slide rail is poweredly connected to an extension frame, which can move the extension frame left and right. An electric push rod is fixedly connected to the rear end face of the extension frame, and the electric push rod is poweredly connected to a weighing frame. The weighing frame is fixedly connected to four circumferentially arranged limiting posts, which slide vertically. The system includes a connecting plate with a feed rack fixedly connected to its upper surface. A third solenoid valve, communicating with the feeding pipe, is fixedly connected to the lower surface of the connecting plate. A feeding pipe passing through the weighing frame is fixedly connected to the lower surface of the third solenoid valve. An electronic scale located below the connecting plate is fixedly connected to the weighing frame. The connecting plate abuts against the electronic scale, allowing feed to be poured into the feed rack and weighed by the electronic scale. The weighed feed is then moved left and right using an electric slide rail. Opening the third solenoid valve allows the feed to be evenly discharged from the feeding pipe, providing a continuous, stable, and precise nutritional supply to the experimental animals.

[0007] Preferably, four feeding racks are fixedly connected to the rear side of the feeding cage at equal vertical distances. The feeding racks extend into the feeding cage and are aligned vertically with the feeding tube. Feed falling from the feeding tube falls into the feeding racks and then into the feeding cage.

[0008] Preferably, a water storage tank is fixedly connected to the left end face of the feeding cage, the water storage tank is filled with water for feeding, and the feeding cage is fitted with a sealing plug for replenishing water to the water storage tank. A water pump is fixedly connected to the front end face of the feeding cage, and a water outlet pipe is fixedly connected between the water pump and the water distribution pipe, so that the water in the water storage tank can be pumped into the water distribution pipe by the water pump.

[0009] Preferably, the feeding cage is fixedly connected with a plurality of perforated plates that cover the feeding cage, thereby preventing the animals from escaping and achieving good ventilation;

[0010] Preferably, a feed rack is fixedly connected to the upper end face of the feeding cage, and a discharge pipe is fixedly connected to the rear end face of the feed rack. A spiral shaft is rotatably connected inside the discharge pipe, with one end of the spiral shaft extending into the bottom of the feed rack. A second solenoid valve is fixedly connected to the lower jaw of the discharge pipe. The second solenoid valve is fixedly connected to the feeding cage, and a drop pipe is fixedly connected to the lower end face of the second solenoid valve. The drop pipe can be aligned coaxially with the feed collection rack. A cover plate is snapped onto the upper side of the feed rack. Thus, by rotating the spiral shaft, the feed in the feed rack can be evenly discharged from the discharge pipe, and then the second solenoid valve can be opened to allow the feed to fall evenly into the feed collection rack for uniform discharge.

[0011] Preferably, a first motor is fixedly connected to the discharge pipe, the first motor is poweredly connected to the spiral shaft, and the first motor can drive the spiral shaft to rotate. A second motor is fixedly connected to the upper end face of the left limiting frame, the second motor is poweredly connected to the threaded shaft, and the second motor can drive the threaded shaft to rotate.

[0012] Preferably, the right side of the feeding cage is provided with four equidistant limiting slots, each limiting slot having a slot on its lower side. A baffle is engaged in each limiting slot, and a sliding groove is provided in each baffle. The sliding groove is slidably connected to the limiting plate, and the limiting plate can be engaged in the slot. Two symmetrical springs are fixedly connected between the upper surface of the limiting plate and the upper wall of the sliding groove, so that the baffle can be easily installed and removed from the feeding cage.

[0013] Preferably, an intelligent controller is fixedly connected to the left end face of the feeding cage. The intelligent controller receives data from the infrared sensor and the electronic scale, and controls the second motor, the water pump, the first motor, the second solenoid valve, the first solenoid valve, the electric slide rail, the third solenoid valve, and the electric push rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention incorporates an infrared sensor, a first solenoid valve, and a water distribution pipe. The infrared sensor monitors the water level in the water dispenser. When the water level drops to a point where rehydration is needed, the corresponding first solenoid valve opens, and a water pump is activated. Water from the storage tank is then pumped from the outlet pipe into the distribution pipe and from the inlet pipe into the water dispenser that is short of water. Once the water level rises to a suitable height, the first solenoid valve automatically closes. This invention can simultaneously rehydrate multiple water dispensers. After all rehydration is complete, the water pump is turned off, thus achieving automatic rehydration of the water dispensers corresponding to each animal level, avoiding human error and precisely controlling the amount of water replenished.

[0016] This invention incorporates a feeding tube, a spiral shaft, and an electric slide rail. By rotating the spiral shaft in conjunction with opening a second solenoid valve, feed from the feed rack falls evenly from the water inlet pipe into the feeding tube, where it is weighed using an electronic scale. Opening a third solenoid valve, along with the electric slide rail, moves the feeding tube, evenly distributing the feed into the feed rack. An electric push rod moves the feeding tube backward, and rotating the spiral shaft moves the feeding tube up and down, eventually moving it to the top of the feed rack. This ensures even replenishment of feed in each feed rack, reducing the workload of staff and, more importantly, providing a continuous, stable, and precise nutritional supply for laboratory animals. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 for Figure 2 A schematic diagram of the AA cross-section;

[0020] Figure 4 for Figure 2 BB cross-sectional diagram;

[0021] Figure 5 for Figure 3 A magnified view of a portion of the image;

[0022] Figure 6 for Figure 4 A magnified view of a portion of the image;

[0023] Figure 7 This is a three-dimensional schematic diagram of the installation of the baffle of this utility model;

[0024] Figure 8 This is a three-dimensional schematic diagram of the threaded shaft of this utility model;

[0025] Figure 9 This is a three-dimensional cross-sectional view of the feed rack of this utility model;

[0026] Figure 10 This is a three-dimensional schematic diagram of the material collection rack of this utility model.

[0027] In the diagram: 100, Feeding cage; 101, Baffle; 102, Limiting plate; 103, Watering rack; 104, Perforated plate; 105, Infrared sensor; 106, First solenoid valve; 107, Water inlet pipe; 108, Mounting plate; 109, Water distribution pipe; 110, Water storage tank; 111, Water pump; 112, Water outlet pipe; 114, Feed rack; 115, Cover plate; 117, Intelligent controller; 118, Limiting frame; 119, Connecting frame; 120, Feeding rack; 121, Threaded shaft; 122, Electric pusher 123. Rod; 124. Second solenoid valve; 125. Discharge pipe; 126. Screw shaft; 127. First motor; 128. Drop pipe; 129. Electric slide rail; 130. Extension frame; 131. Weighing frame; 132. Limiting post; 133. Connecting plate; 134. Third solenoid valve; 135. Feeding pipe; 136. Electronic scale; 137. Slide groove; 138. Spring; 139. Slot; 140. Sealing plug; 141. Sliding block; 142. Collector rack; 143. Second motor; 144. Limiting groove. Detailed Implementation

[0028] To facilitate a better understanding of this utility model, the following examples are provided in conjunction with the accompanying drawings. These examples fall within the protection scope of this utility model, but do not limit the protection scope of this utility model.

[0029] Example 1:

[0030] Please see Figure 1-10 This utility model provides a technical solution: an automatic feeding device for laboratory animals, including a feeding cage 100. Four equidistant water racks 103 are fixedly connected to the front of the feeding cage 100. Parts of the water racks 103 extend into the inside of the feeding cage 100. An infrared sensor 105 is fixedly connected to the right side of the upper surface of each water rack 103. The infrared sensor 105 extends into the water rack 103 and can monitor the water level inside the water rack 103. A first electrical connector communicating with the inside of the water rack 103 is fixedly connected to the left side of the upper surface of each water rack 103. The solenoid valve 106 is used to fix two mounting plates 108 to the front end of the feeding cage 100. The mounting plates 108 are fixedly connected to a water distribution pipe 109. The water distribution pipe 109 is fixedly connected to each of the first solenoid valves 106 by a water inlet pipe 107. So when water is introduced into the water distribution pipe 109, water can be added to the water drinking rack 103 by opening the first solenoid valve 106 corresponding to each water drinking rack 103. The infrared sensor 105 is used to monitor the water level in the water drinking rack 103. Water is automatically added when the water level drops to the replenishment height and stops when the water level rises to the appropriate height.

[0031] The rear end face of the feeding cage 100 is fixedly connected to two symmetrically positioned brackets 118. Each bracket 118 has a slider 140 slidably connected vertically. A vertically threaded shaft 121 is rotatably connected to the left bracket 118, and the threaded shaft 121 is threadedly connected to the slider 140. A connecting bracket 119 is fixedly connected between the two sliders 140. An electric slide rail 128 is fixedly connected to the connecting bracket 119, and the electric slide rail 128 is poweredly connected to an extension bracket 129. The electric slide rail 128 can drive the extension bracket 129 to move left and right. An electric push rod 122 is fixedly connected to the rear end face of the extension bracket 129, and the electric push rod 122 is poweredly connected to a weighing frame 130. The weighing frame 130 is fixedly connected to four circumferentially arranged positioning posts 131. A connecting plate 132 is slidably connected vertically. A feed rack 141 is fixedly connected to the upper end of the connecting plate 132, and a third solenoid valve 133 communicating with the feeding pipe 134 is fixedly connected to the lower end of the connecting plate 132. A feeding pipe 134 passing through the weighing frame 130 is fixedly connected to the lower end of the third solenoid valve 133. An electronic scale 135 located below the connecting plate 132 is fixedly connected to the weighing frame 130. The connecting plate 132 abuts against the electronic scale 135. By pouring feed into the feed rack 141, the feed can be weighed by the electronic scale 135. The weighed feed can be moved left and right by the electric slide rail 128. Opening the third solenoid valve 133 can evenly discharge the feed from the feeding pipe 134, thus providing a continuous, stable, and precise nutritional supply to the experimental animals.

[0032] The rear side of the feeding cage 100 is fixedly connected to four feeding racks 120 at equal vertical distances. Part of the feeding racks 120 extend into the feeding cage 100, and the feeding racks 120 are vertically aligned with the feeding tube 134. The feed falling from the feeding tube 134 falls into the feeding racks 120 and then enters the feeding cage 100.

[0033] A water storage tank 110 is fixedly connected to the left end face of the feeding cage 100. The water storage tank 110 contains water for feeding. The feeding cage 100 is also fitted with a sealing plug 139 for replenishing water to the water storage tank 110. A water pump 111 is fixedly connected to the front end face of the feeding cage 100. A water outlet pipe 112 is fixedly connected between the water pump 111 and the water distribution pipe 109, so that the water in the water storage tank 110 can be pumped into the water distribution pipe 109 by the water pump 111.

[0034] The feeding cage 100 is fixedly connected to a plurality of perforated plates 104 that cover the feeding cage 100. The perforated plates 104 prevent animals from escaping and achieve good ventilation.

[0035] Example 2:

[0036] Please see Figure 1-10 In order to evenly feed the feed into the feed rack 141, a screw shaft 125 and a second solenoid valve 123 are provided.

[0037] A feed rack 114 is fixedly connected to the upper end face of the feeding cage 100. A discharge pipe 124 is fixedly connected to the rear end face of the feed rack 114. A spiral shaft 125 is rotatably connected inside the discharge pipe 124. One end of the spiral shaft 125 extends into the bottom of the feed rack 114. A second solenoid valve 123 is fixedly connected to the lower jaw of the discharge pipe 124. The second solenoid valve 123 is fixedly connected to the feeding cage 100. A drop pipe 127 is fixedly connected to the lower end face of the second solenoid valve 123. The drop pipe 127 can be aligned vertically with the collection rack 141. A cover plate 115 is snapped onto the upper side of the feed rack 114. By rotating the spiral shaft 125, the feed in the feed rack 114 can be evenly discharged from the discharge pipe 124. Then, the second solenoid valve 123 is opened, and the feed falls evenly into the collection rack 141 for uniform discharge.

[0038] The discharge pipe 124 is fixedly connected to a first motor 126, which is poweredly connected to the spiral shaft 125. The first motor 126 can drive the spiral shaft 125 to rotate. The upper end face of the left limiting frame 118 is fixedly connected to a second motor 142, which is poweredly connected to the threaded shaft 121. The second motor 142 can drive the threaded shaft 121 to rotate.

[0039] The right side of the feeding cage 100 is provided with four equidistant limiting grooves 143. Each limiting groove 143 has a slot 138 on its lower side. A baffle 101 is engaged in each limiting groove 143. A sliding groove 136 is provided in each baffle 101. A limiting plate 102 is slidably connected to the sliding groove 136. The limiting plate 102 can be engaged in the slot 138. Two symmetrical springs 137 are fixedly connected between the upper end face of the limiting plate 102 and the upper wall of the sliding groove 136, so that the baffle 101 can be easily installed and removed from the feeding cage 100.

[0040] A smart controller 117 is fixedly connected to the left end face of the feeding cage 100. The smart controller 117 receives data from the infrared sensor 105 and the electronic scale 135, and controls the second motor 142, the water pump 111, the first motor 126, the second solenoid valve 123, the first solenoid valve 106, the electric slide rail 128, the third solenoid valve 133, and the electric push rod 122.

[0041] Working principle:

[0042] First, after placing the animals into each layer of the feeding cage 100, insert the upper end of the baffle 101 into the limiting groove 143, and pull up the limiting plate 102. After the baffle 101 is vertical, release the limiting plate 102. The spring 137 drives the limiting plate 102 into the slot 138, realizing the quick installation of the baffle 101, which, together with the perforated plate 104, prevents the animals from escaping.

[0043] The automatic water replenishment process is as follows: When the infrared sensor 105 detects that the water level in the water dispenser 103 has dropped to the height where water needs to be replenished, it automatically opens the corresponding first solenoid valve 106 and starts the water pump 111. The water pump 111 draws water from the water storage tank 110, which flows through the outlet pipe 112 into the distribution pipe 109, and then flows through the inlet pipe 107 through the opened first solenoid valve 106 before flowing into the water dispenser 103 that is short of water. After the water level in the water dispenser 103 rises to the appropriate height, the infrared sensor 105 monitors the water level and closes the first solenoid valve 106 in time. After all the water dispensers 103 have been replenished, the water pump 111 is turned off, thus achieving the purpose of precise water replenishment.

[0044] The automatic feeding process involves a water pump 111 timing the process. When the time is up, the first motor 126 starts, driving the screw shaft 125 to rotate. The screw shaft 125 evenly discharges the feed from the feed rack 114 through the discharge pipe 124 and opens the second solenoid valve 123. The feed then falls from the drop pipe 127 into the collection rack 141, where the electronic scale 135 weighs it. When the weight reaches the set value, the first motor 126 and the second solenoid valve 123 are closed. Simultaneously, the electric slide rail 128 is activated and the third solenoid valve 133 is opened. The electric slide rail 128 drives the extension frame 129 and the electric push rod 122 to move left and right in a circular motion. The electric push rod 122 drives the weighing frame 130 to move left and right in a circular motion, thus scattering the feed from the feeding pipe 134 into the feeding rack 120. The feed then slides into the feeding cage 100 for the animals to eat. The electronic scale... Once the feeding is completed (135), the feed collection rack 141 returns to its initial position below the feed drop pipe 127. When feeding is needed at the lowest feeding rack 120, the electric push rod 122 is activated. The electric push rod 122 moves the feed collection rack 141 backward a suitable distance to avoid colliding with the feeding rack 120 during downward movement. The second motor 142 drives the threaded shaft 121 to rotate, moving the connecting frame 119 down to the top of each feeding rack 120. Then, the electric push rod 122 moves the feeding pipe 134 to the top of the feeding rack 120, allowing for even feeding at different heights of the feeding racks 120. Water can be added to the water storage tank 110 by opening the sealing plug 139, and feed can be added to the feed rack 114 by opening the cover plate 115. This not only reduces the burden on staff but, more importantly, provides a continuous, stable, and precise nutritional supply for the experimental animals.

[0045] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic feeding device for laboratory animal husbandry, comprising a feeding cage (100), characterized in that: The front of the feeding cage (100) is fixedly connected to four equidistant water racks (103), each extending into the inside of the feeding cage (100). An infrared sensor (105) is fixedly connected to the right side of the upper surface of each water rack (103), extending into the water rack (103) to monitor the water level. A first solenoid valve (106) communicating with the inside of each water rack (103) is fixedly connected to the left side of the upper surface of each water rack (103). Two mounting plates (108) are fixedly connected to the front end of the feeding cage (100), each mounting plate (108) being fixedly connected to a water distribution pipe (109). A water inlet pipe (107) is fixedly connected between the water distribution pipe (109) and each of the first solenoid valves (106). Two symmetrically positioned limit frames (118) are fixedly connected to the rear end face. Each limit frame (118) has a slider (140) that slides vertically inside. A vertical threaded shaft (121) is rotatably connected inside the left limit frame (118). The threaded shaft (121) is threadedly connected to the slider (140). A connecting frame (119) is fixedly connected between the two sliders (140). An electric slide rail (128) is fixedly connected to the connecting frame (119). The electric slide rail (128) is powered to connect to an extension frame (129). The electric slide rail (128) can drive the extension frame (129) to move left and right. An electric push rod (122) is fixedly connected to the rear end face of the extension frame (129). The electric push rod (122) is powered to connect to a weighing frame (130). The weighing frame (130) is fixedly connected to four circumferentially distributed limit posts (131). The limiting post (131) is slidably connected to a connecting plate (132). A material collection rack (141) is fixedly connected to the upper end face of the connecting plate (132). A third solenoid valve (133) is fixedly connected to the lower end face of the connecting plate (132). A feeding pipe (134) passing through the weighing frame (130) is fixedly connected to the lower end face of the third solenoid valve (133). The third solenoid valve (133) communicates with the feeding pipe (134). An electronic scale (135) located below the connecting plate (132) is fixedly connected to the weighing frame (130). The connecting plate (132) abuts against the electronic scale (135).

2. The automatic feeding device for laboratory animal husbandry according to claim 1, characterized in that: The rear side of the feeding cage (100) is fixedly connected with four feeding racks (120) that are equidistant from top to bottom. The feeding racks (120) extend into the feeding cage (100) and are aligned vertically with the feeding tube (134).

3. An automatic feeding device for laboratory animal husbandry according to claim 2, characterized in that: A water tank (110) is fixedly connected to the left end face of the feeding cage (100). The water tank (110) contains water for feeding. The feeding cage (100) is fitted with a sealing plug (139) for replenishing water to the water tank (110). A water pump (111) is fixedly connected to the front end face of the feeding cage (100). A water outlet pipe (112) is fixedly connected between the water pump (111) and the water distribution pipe (109).

4. An automatic feeding device for laboratory animal husbandry according to claim 3, characterized in that: The rearing cage (100) is fixedly connected to a plurality of perforated plates (104) that cover the rearing cage (100).

5. An automatic feeding device for laboratory animal husbandry according to claim 4, characterized in that: A feed rack (114) is fixedly connected to the upper end face of the feeding cage (100). A discharge pipe (124) is fixedly connected to the rear end face of the feed rack (114). A spiral shaft (125) is rotatably connected inside the discharge pipe (124). One end of the spiral shaft (125) extends into the bottom of the feed rack (114). A second solenoid valve (123) is fixedly connected to the lower jaw of the discharge pipe (124). The second solenoid valve (123) is fixedly connected to the feeding cage (100). A drop pipe (127) is fixedly connected to the lower end face of the second solenoid valve (123). The drop pipe (127) can be aligned coaxially with the feed collection rack (141). A cover plate (115) is snapped onto the upper side of the feed rack (114).

6. An automatic feeding device for laboratory animal husbandry according to claim 5, characterized in that: The discharge pipe (124) is fixedly connected to a first motor (126), which is powered to the spiral shaft (125). The first motor (126) can drive the spiral shaft (125) to rotate. The upper end face of the left limiting frame (118) is fixedly connected to a second motor (142), which is powered to the threaded shaft (121). The second motor (142) can drive the threaded shaft (121) to rotate.

7. An automatic feeding device for laboratory animal husbandry according to claim 6, characterized in that: The right side of the feeding cage (100) is provided with four equidistant limiting grooves (143), each limiting groove (143) has a slot (138) on its lower side, and a baffle (101) is engaged in each limiting groove (143). A sliding groove (136) is provided in the baffle (101), and a limiting plate (102) is slidably connected to the sliding groove (136). The limiting plate (102) can be engaged in the slot (138), and two symmetrical springs (137) are fixedly connected between the upper end face of the limiting plate (102) and the upper wall of the sliding groove (136).

8. An automatic feeding device for laboratory animal husbandry according to claim 7, characterized in that: A smart controller (117) is fixedly connected to the left end of the feeding cage (100). The smart controller (117) receives data from the infrared sensor (105) and the electronic scale (135) and controls the second motor (142), the water pump (111), the first motor (126), the second solenoid valve (123), the first solenoid valve (106), the electric slide rail (128), the third solenoid valve (133), and the electric push rod (122).

Images