Automatic quantitative feeding device for breeding of pachyhynobius A method for producing a semiconductor device

Abstract

This application discloses an automatic quantitative feeding device for spiny-breasted frog breeding ponds, belonging to the field of aquaculture technology. The device includes a feeding box and a feeding platform. The feeding box is fixed to the top of the feeding platform, and the bottom of the platform has multiple movable holes. Multiple buffer plates are hinged to the top of the inner wall of the feeding box via multiple rotating shafts. By incorporating buffer plates and torsion springs, when mealworms fall from the top of the feeding box, the buffer plates deflect downwards under the weight of the mealworms and the torsion springs, then drop them onto the spiral platform. The rotation of the motor then causes the mealworms on the spiral platform to slowly fall into the feeding box. This multi-stage buffering effectively reduces the direct impact force between the mealworms and the inner wall of the feeding box, preventing death or injury from the impact, thus significantly improving the survival rate of the mealworms and increasing their utilization rate and breeding efficiency.

Description

Technical Field

[0001] This invention belongs to the field of aquaculture technology, specifically relating to an automatic quantitative feeding device for spiny-breasted frog breeding ponds. Background Technology

[0002] The spiny-breasted frog is an aquatic frog that lives in flowing water and prefers to burrow. It is mainly distributed in southern China and is a prized delicacy found in the hilly and mountainous regions of the south. Because of its delicate flesh and rich mineral content, it is known as the "King of Frogs" by gourmets. The spiny-breasted frog prefers to inhabit shady, quiet mountain streams with abundant vegetation. It primarily feeds on live prey such as insects and larvae, earthworms, small snails, small shrimp, and small fish, and will not consume dead or immobile food.

[0003] Chinese patent application CN106922619B discloses a feeding device and method for spiny-breasted frogs. The feeding device includes a feeding box and a feeding platform. The feeding box is placed on the feeding platform, and the bottom area of ​​the feeding box is smaller than the bottom area of ​​the feeding platform. The bottom of the feeding box has a ring of holes, making it hollow. Although the above application uses a feeding box and feeding platform to increase the survival rate of mealworms, some mealworms still die when they are released into the feeding box and impact the inside of the box during free fall. The spiny-breasted frogs will not eat the dead mealworms, resulting in a reduced utilization rate of the mealworms. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic quantitative feeding device for spiny-breasted frog breeding ponds, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides an automatic quantitative feeding device for spiny-breasted frog breeding ponds, comprising a feeding box and a feeding platform. The feeding box is fixed to the top of the feeding platform, and the bottom of the feeding platform has multiple movable holes. The upper surface of the feeding platform has multiple slowing grooves. The top of the inner wall of the feeding box is hinged with multiple buffer plates through multiple rotating shafts. Each rotating shaft is equipped with a torsion spring. A motor is installed inside the feeding platform. A conical platform is rotatably connected to the bottom of the inner wall of the feeding box. The bottom of the conical platform is connected to the output shaft of the motor. A spiral platform is installed on the outer side of the conical platform. This application incorporates buffer plates and torsion springs. When mealworms fall from the top of the feeding box, multiple buffer plates deflect downwards under the weight of the mealworms and the action of the torsion springs, then place them onto a spiral platform. Subsequently, the rotation of the motor causes the mealworms on the spiral platform to slowly fall into the feeding box. This creates a multi-stage buffer during the mealworms' descent, effectively reducing the direct impact force between the mealworms and the inner wall of the feeding box, preventing the mealworms from dying or being injured due to the impact. This significantly improves the survival rate of mealworms, increases their utilization rate, and enhances the breeding efficiency.

[0006] Furthermore, six buffer plates are arranged in a circular array on the top of the inner wall of the feeding box.

[0007] Furthermore, the feeding platform is a frustum-shaped structure, and the slowing trough is composed of multiple annular troughs with successively decreasing inner diameters, and each adjacent annular trough is connected by a vertical trough.

[0008] Furthermore, there is a gap between the bottom of the spiral platform and the bottom of the inner wall of the feeding box, and the top of the spiral platform is a horizontal structure.

[0009] Furthermore, three spherical protrusions are fixed in the middle of the inner wall of the feeding box, and the three spherical protrusions are distributed in a ring array in the middle of the inner wall of the feeding box.

[0010] Furthermore, the interior of the conical truss is equipped with a push-relief assembly, which includes a hollow rod embedded in the outside of the conical truss, a bracket fixed in the middle of the cavity inside the conical truss, and a sliding rod that penetrates and slidably connects to the bottom of the cavity inside the conical truss. A double ball-head rod is penetrated and slidably connected inside the hollow rod, and a spring is installed between the double ball-head rod and the hollow rod. An L-shaped ball-head rod is fixed to the top of the hollow rod. A vertical ball-head rod is penetrated and slidably connected inside the bracket, and a spring is installed between the vertical ball-head rod and the bracket. A triangular block is fixed to the top of the vertical ball-head rod. An arc-shaped push block is fixed to the outside of the sliding rod, and a spring piece is installed between the top of the sliding rod and the cavity inside the conical truss. This application utilizes the intermittent contact between the double ball-head rods and the spherical protrusions in the slow-push assembly. During the rotation of the conical platform, the vertical ball-head rod and the triangular block are driven to move downwards, thereby pushing the arc-shaped pusher at the end of the slide rod to generate a gentle push force on the mealworms. This effectively prevents the mealworms from accumulating or getting stuck at the bottom of the conical platform. This application adopts intermittent slow-push, avoiding continuous squeezing damage to the mealworms. At the same time, the three sets of slide rods are evenly distributed in a ring, ensuring comprehensive coverage of the push and guaranteeing the survival rate of the live bait.

[0011] Furthermore, there are three sets of sliding rods and arc-shaped push blocks. The three sliding rods are arranged in a ring below the vertical ball head rod. Each sliding rod has a sloping structure at the end near the vertical ball head rod. The sloping surface of the triangular block fits against one end of the double ball head rod. The spherical protrusion is located on the movement trajectory of the other end of the double ball head rod.

[0012] Furthermore, the feeding box is equipped with a powder dispensing assembly on its outer side. This assembly includes an annular storage chamber fixed to the outside of the feeding box. An annular inclined block is fixed to the bottom of the inner wall of the annular storage chamber. Three dispensing tubes are mounted at the bottom of the bottom of the inner walls of each of the three dispensing tubes. A baffle is rotatably connected to the bottom of each baffle via a pivot. A spring clip is mounted between the top of each baffle and the dispensing tube. A vertical ball-head rod is fixed to the bottom of each baffle. This application utilizes the annular storage chamber and dispensing tubes in the powder dispensing assembly. When the L-shaped ball-head rod rotates with the conical platform and touches the vertical ball-head rod, the baffle is opened, achieving automatic quantitative dispensing of powder. This effectively avoids the problem of localized powder concentration or leakage, improving the convenience of animal husbandry.

[0013] Furthermore, the vertical ball joint 2 is located on the movement trajectory of the L-shaped ball joint.

[0014] The advantages of this application are: (1) By setting buffer plates and torsion springs, when mealworms fall from the top of the feeding box, multiple buffer plates deflect downwards under the weight of the mealworms and the action of the torsion springs, and then are placed on the spiral platform. Subsequently, the rotation of the motor causes the mealworms on the spiral platform to slowly fall into the feeding box, thereby forming a multi-level buffer for the falling process of the mealworms, effectively reducing the direct impact force between the mealworms and the inner wall of the feeding box, avoiding the death or injury of the mealworms due to impact, thus significantly improving the survival rate of the mealworms, and improving the utilization rate and breeding benefits of the mealworms.

[0015] (2) In this application, the double ball head rods in the slow-push assembly intermittently contact the spherical protrusions, driving the vertical ball head rod and the triangular block to move down during the rotation of the conical platform, thereby pushing the arc-shaped push block at the end of the slide rod to generate a gentle push force on the mealworms, effectively preventing the mealworms from accumulating or getting stuck at the bottom of the conical platform. This application adopts intermittent slow-push, avoiding continuous squeezing damage to the mealworms. At the same time, the three sets of slide rods are evenly distributed in a ring, and the push material is fully covered, ensuring the survival rate of live bait.

[0016] (3) In this application, the ring-shaped medicine storage bin and the dispensing pipe in the medicine powder dispensing component enable the baffle to be opened when the L-shaped ball head rod rotates with the conical platform and touches the vertical ball head rod 2, thereby realizing the automatic quantitative dispensing of medicine powder, effectively avoiding the problem of local concentration or leakage of medicine powder, and improving the convenience of breeding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention. Figure 1 ; Figure 3 This is the invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the internal structure of the present invention; Figure 6 This is a cross-sectional view of the push-off component structure of the present invention; Figure 7 This is a cross-sectional view of the powder dispensing assembly structure of the present invention; Figure 8 This is a partial structural cross-sectional view of the powder dispensing assembly of the present invention.

[0018] Explanation of key figure labels: 100. Feeding platform; 200. Feeding box; 201. Spherical protrusion; 202. Movable hole; 300. Slowing groove; 400. Rotating shaft one; 401. Torsion spring; 500. Buffer plate; 600. Motor; 700. Conical platform; 701. Spiral platform; 800. Soft-push assembly; 801. Hollow rod; 802. Bracket; 803. Slide rod; 804. Double ball joint rod; 805. Spring 1; 806. L-shaped ball joint rod; 807. Vertical ball joint rod 1; 808. Triangular block; 809. Spring 2; 810. Arc-shaped push block; 811. Spring piece 1; 900. Powder dispensing assembly; 901. Circular medicine storage bin; 902. Circular inclined block; 903. Dispensing pipe; 904. Rotating shaft II; 905. Baffle; 906. Vertical ball joint II; 907. Spring II. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0020] Example 1, as Figures 1-6As shown, an automatic quantitative feeding device for a spiny-breasted frog breeding pond includes a feeding box 200 and a feeding platform 100. The feeding box 200 is fixed to the top of the feeding platform 100. Multiple movable holes 202 are provided at the bottom of the feeding platform 100, and multiple slowing grooves 300 are provided on the upper surface of the feeding platform 100. The feeding platform 100 is generally frustum-shaped. The slowing grooves 300 are composed of multiple annular grooves with progressively decreasing inner diameters, and each adjacent annular groove is connected by a vertical groove. This structural design requires mealworms to constantly change direction and cross the groove edges during crawling, thus significantly reducing their crawling speed and extending their stay on the feeding platform 100, making it easier for the spiny-breasted frogs to find and feed on them. Multiple buffer plates 500 are hinged to the top of the inner wall of the feeding box 200 via multiple pivots 400. A total of six buffer plates 500 are provided and arranged in a symmetrical pattern. The feeding box 200 is arranged in a ring array at the top of its inner wall. Each rotating shaft 400 is equipped with a torsion spring 401. When the six buffer plates 500 deflect sequentially or simultaneously, they form a buffer, significantly slowing down the falling speed of the mealworms and preventing them from directly impacting the hard inner wall and dying or getting injured. The feeding platform 100 is equipped with a motor 600. The bottom of the inner wall of the feeding box 200 is rotatably connected to a conical platform 700. The bottom of the conical platform 700 is connected to the output shaft of the motor 600. A spiral platform 701 is assembled on the outside of the conical platform 700. There is a gap between the bottom of the spiral platform 701 and the bottom of the inner wall of the feeding box 200. The top of the spiral platform 701 is a horizontal structure. Three spherical protrusions 201 are fixed in the middle of the inner wall of the feeding box 200. The three spherical protrusions 201 are arranged in a ring array in the middle of the inner wall of the feeding box 200. This application incorporates buffer plates 500 and torsion springs 401. When mealworms fall from the top of the feeding box 200, multiple buffer plates 500 deflect downwards under the weight of the mealworms and the action of the torsion springs 401, then place them onto the spiral platform 701. Subsequently, the rotation of the motor 600 causes the mealworms on the spiral platform 701 to slowly fall into the feeding box 200, thus forming a multi-stage buffer during the falling process. This effectively reduces the direct impact force between the mealworms and the inner wall of the feeding box 200, preventing the mealworms from dying or being injured due to the impact, thereby significantly improving the survival rate of mealworms and increasing their utilization rate and breeding efficiency.

[0021] The cone-shaped truncated pyramid 700 is internally equipped with a push-off assembly 800. The push-off assembly 800 includes a hollow rod 801 embedded on the outside of the cone-shaped truncated pyramid 700, a bracket 802 fixed in the middle of the inner cavity of the cone-shaped truncated pyramid 700, and a sliding rod 803 penetrating and slidably connected to the bottom of the inner cavity of the cone-shaped truncated pyramid 700. A double ball-head rod 804 is penetrating and slidably connected inside the hollow rod 801. A spring 805 is installed between the double ball-head rod 804 and the hollow rod 801. An L-shaped ball-head rod 806 is fixed to the top of the hollow rod 801. A vertical ball-head rod 807 is penetrating and slidably connected inside the bracket 802. The vertical ball-head rod 807 is connected to the bracket 802. A spring 809 is installed between the two parts. A triangular block 808 is fixed to the top of the vertical ball joint rod 807. An arc-shaped push block 810 is fixed to the outside of the slide rod 803. A spring piece 811 is installed between the top of the slide rod 803 and the inner cavity of the conical platform 700. There are three sets of slide rods 803 and arc-shaped push blocks 810. The three slide rods 803 are arranged in a ring below the vertical ball joint rod 807. The end of each slide rod 803 near the vertical ball joint rod 807 is a sloping structure. The sloping surface of the triangular block 808 fits against one end of the double ball joint rod 804. The spherical protrusion 201 is located on the movement trajectory of the other end of the double ball joint rod 804. This application uses the intermittent contact between the double ball-head rod 804 and the spherical protrusion 201 in the slow-push assembly 800. During the rotation of the conical platform 700, the vertical ball-head rod 807 and the triangular block 808 are driven to move downward, thereby pushing the arc-shaped push block 810 at the end of the slide rod 803 to generate a gentle push force on the mealworms. This effectively prevents the mealworms from accumulating or getting stuck at the bottom of the conical platform 700. This application adopts intermittent slow push, which avoids continuous squeezing damage to the mealworms. At the same time, the three sets of slide rods 803 are evenly distributed in a ring, and the push material is fully covered, ensuring the survival rate of live bait.

[0022] When the above equipment is used, the breeder pours live mealworms into the feeding box 200 from the top. The mealworms first fall on multiple buffer plates 500. Due to the weight of the mealworms, the buffer plates 500 deflect downwards against the elastic force of the torsion spring 401. The mealworms slide down the buffer plates 500 to the top horizontal surface of the spiral platform 701. The multi-stage buffer plates 500 deflect slightly, which significantly slows down the falling speed of the mealworms and prevents them from directly hitting the hard inner wall and dying. Then the motor 600 is started, which drives the conical platform 700 and the spiral platform 701 to rotate slowly. The mealworms gradually move downward on the spiral surface of the spiral platform 701 as it rotates, and eventually fall from the bottom of the spiral platform 701 to the bottom of the feeding box 200 through the gap between the bottom of the spiral platform 701 and the inner wall of the feeding box 200. During the rotation of the conical platform 700, the outer end of the double ball-head rod 804 intermittently contacts the spherical protrusion 201 fixed in the middle of the inner wall of the feeding box 200. When the double ball-head rod 804 contacts the spherical protrusion 201, the double ball-head rod 804 is compressed into the hollow rod 801, the spring 805 is compressed, and the inner end of the double ball-head rod 804 pushes the inclined surface of the triangular block 808, causing the vertical ball-head rod 807 to move downward against the elastic force of the spring 809. When the vertical ball-head rod 807 moves downward, its bottom end pushes the inclined end of the multiple sliding rods 803 below, causing the sliding rods 803 to move downward. 03 slides outward, the spring piece 811 is compressed, and the arc-shaped push block 810 at the end of the slide bar 803 pushes outward, gently pushing the mealworms piled at the bottom of the feeding box 200 and dispersing them to the vicinity of each active hole 202. When the double ball head rod 804 disengages from the spherical protrusion 201, the spring 805, the second spring 809 and the spring piece 811 reset, and the slide bar 803 and the arc-shaped push block 810 retract. As the conical platform 700 rotates continuously, the above process is repeated intermittently, achieving a gentle and periodic push on the mealworms and avoiding continuous squeezing damage. Mealworms slowly crawl out or fall onto the upper surface of the feeding platform 100 through multiple movable holes 202 at the bottom of the feeding platform 100. The slowing groove 300 on the upper surface of the feeding platform 100, along with multiple annular grooves and vertical grooves with progressively smaller inner diameters, further slows down the crawling speed of the mealworms and prolongs their stay on the feeding platform 100, making it easier for the spiny-breasted frog to feed.

[0023] Example 2, as Figures 6-8 As shown, based on Embodiment 1, a powder dispensing component 900 is assembled on the outside of the feeding box 200. The powder dispensing component 900 includes an annular medicine storage chamber 901 fixed on the outside of the feeding box 200. An annular inclined block 902 is fixed on the bottom of the inner wall of the annular medicine storage chamber 901. Three dispensing tubes 903 are assembled on the bottom of the bottom of the inner wall of each of the three dispensing tubes 903. A baffle 905 is rotatably connected to the bottom of the inner wall of each of the three dispensing tubes 903 through a second rotating shaft 904. A spring piece 907 is assembled between the top of each baffle 905 and the dispensing tube 903. A vertical ball head rod 906 is fixed on the bottom of each baffle 905. The vertical ball head rod 906 is located on the movement trajectory of the L-shaped ball head rod 806. This application utilizes the annular medicine storage chamber 901 and the dispensing pipe 903 in the medicine powder dispensing component 900. When the L-shaped ball head rod 806 rotates with the conical platform 700 and touches the vertical ball head rod 906, the baffle 905 is pushed open to achieve automatic quantitative dispensing of medicine powder, effectively avoiding the problem of local concentration or leakage of medicine powder and improving the convenience of breeding.

[0024] When the above equipment is used, the breeder loads the medicine powder into the annular medicine storage bin 901. The annular inclined block 902 causes the medicine powder to automatically concentrate at the bottom delivery pipe 903. In the initial state, the baffle 905 is kept closed by the action of the spring plate 907 to prevent the medicine powder from leaking. During the rotation of the conical platform 700, the L-shaped ball head rod 806 fixed at the top of the hollow rod 801 rotates synchronously with the conical platform 700. When the L-shaped ball head rod 806 rotates to a position directly below a vertical ball head rod 906, the top of the L-shaped ball head rod 806 pushes the vertical ball head rod 906 upward. The vertical ball head rod 906 drives the baffle 905 to deflect upward around the rotating axis 904. The spring 907 is compressed. After the baffle 905 opens, the powder in the dispensing tube 903 falls from the bottom of the dispensing tube 903 into the feeding box 200 or directly onto the surface of the mealworms under the guidance of gravity and the annular inclined block 902. When the L-shaped ball head rod 806 continues to rotate and moves away from the vertical ball head rod 906, the spring 907 resets, pushing the baffle 905 to close the dispensing tube 903 again, stopping the dispensing of powder. Because the three dispensing tubes 903 are arranged in a ring, and the L-shaped ball head rod 806 triggers the three vertical ball head rods 906 in sequence with each rotation, the triggering time is short and fixed, so the amount of medicine powder dispensed each time is basically the same. At the same time, the medicine powder and mealworms are mixed inside the feeding box 200, and then they are delivered to the surface of the feeding platform 100 through the spiral platform 701, the slow push component 800 and the movable hole 202, so as to achieve uniform mixing and feeding of medicine powder and live bait.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic quantitative feeding device for a spiny-breasted frog breeding pond, comprising a feeding box (200) and a feeding platform (100), characterized in that, The feeding box (200) is fixed to the top of the feeding platform (100). The bottom of the feeding platform (100) has multiple movable holes (202). The upper surface of the feeding platform (100) has multiple slowing grooves (300). The top of the inner wall of the feeding box (200) is hinged with multiple buffer plates (500) through multiple rotating shafts (400). Each rotating shaft (400) is equipped with a torsion spring (401). The inside of the feeding platform (100) is equipped with a motor (600). The bottom of the inner wall of the feeding box (200) is rotatably connected to a conical platform (700). The bottom of the conical platform (700) is connected to the output shaft of the motor (600). The outer side of the conical platform (700) is equipped with a spiral platform (701).

2. The automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 1, characterized in that, The buffer plates (500) are arranged in a circular array at the top of the inner wall of the feeding box (200).

3. The automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 2, characterized in that, The feeding platform (100) is a frustum-shaped structure, and the slowing trough (300) is composed of multiple annular grooves with successively decreasing inner diameters, and each adjacent annular groove is connected by a vertical groove.

4. The automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 3, characterized in that, There is a gap between the bottom of the spiral platform (701) and the bottom of the inner wall of the feeding box (200), and the top of the spiral platform (701) is a horizontal structure.

5. An automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 4, characterized in that, Three spherical protrusions (201) are fixed in the middle of the inner wall of the feeding box (200), and the three spherical protrusions (201) are distributed in a ring array in the middle of the inner wall of the feeding box (200).

6. An automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 5, characterized in that, The conical truncated pyramid (700) is internally equipped with a push-off assembly (800). The push-off assembly (800) includes a hollow rod (801) embedded on the outside of the conical truncated pyramid (700), a bracket (802) fixed in the middle of the cavity inside the conical truncated pyramid (700), and a sliding rod (803) penetrating and slidably connected to the bottom of the cavity inside the conical truncated pyramid (700). A double ball-head rod (804) is penetrating and slidably connected inside the hollow rod (801). A spring (805) is installed between the double ball-head rod (804) and the hollow rod (801). An L-shaped ball joint (806) is fixed to the top of the hollow rod (801). A vertical ball joint (807) is slidably connected through the inside of the bracket (802). A spring (809) is installed between the vertical ball joint (807) and the bracket (802). A triangular block (808) is fixed to the top of the vertical ball joint (807). An arc-shaped push block (810) is fixed to the outside of the slide rod (803). A spring piece (811) is installed between the top of the slide rod (803) and the inner cavity of the conical platform (700).

7. An automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 6, characterized in that, The slide rod (803) and the arc-shaped push block (810) are arranged in three sets. The three slide rods (803) are arranged in a ring below the vertical ball head rod (807). The end of each slide rod (803) near the vertical ball head rod (807) is a sloping structure. The sloping surface of the triangular block (808) is attached to one end of the double ball head rod (804). The spherical protrusion (201) is located on the movement trajectory of the other end of the double ball head rod (804).

8. An automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 7, characterized in that, The feeding box (200) is equipped with a powder dispensing assembly (900) on its outer side. The powder dispensing assembly (900) includes an annular medicine storage chamber (901) fixed on the outer side of the feeding box (200). An annular inclined block (902) is fixed to the bottom of the inner wall of the annular medicine storage chamber (901). Three dispensing tubes (903) are assembled at the bottom of the annular medicine storage chamber (901). The bottom of the inner wall of each of the three dispensing tubes (903) is rotatably connected to a baffle (905) through a second rotating shaft (904). A second spring piece (907) is assembled between the top of each baffle (905) and the dispensing tube (903). A second vertical ball head rod (906) is fixed to the bottom of each baffle (905).

9. An automatic quantitative feeding device for a spiny-breasted frog breeding pond according to claim 8, characterized in that, The vertical ball joint 2 (906) is located on the trajectory of the L-shaped ball joint (806).

Images