Mechanical limiting device of fence type livestock weighing platform

Abstract

The invention discloses a fence type livestock weighing platform mechanical limiting device which comprises a supporting bottom plate, a fence frame is fixedly installed at the top of the supporting bottom plate, a fixing frame is fixedly installed at the top of the supporting bottom plate, the two sides of the fixing frame are fixedly installed on the inner side wall of the fence frame, three grooves are formed in the surface of the fixing frame, and the two sides of the fixing frame are fixedly installed on the inner side wall of the fence frame. Mounting grooves are formed in one sides of the inner walls of the three grooves, threaded columns used for rotating are inserted into the inner walls of the three mounting grooves, and mounting blocks are in threaded connection with the outer surfaces of the three threaded columns. According to the mechanical limiting device for the fence type livestock weighing platform, the threaded column, the mounting block and the shielding mechanism are arranged on the fixing frame, the threaded column rotates to drive the mounting block and the shielding mechanism to horizontally move along the groove, the position of the shielding mechanism can be flexibly adjusted, and the limiting requirements of livestock of different body types and types can be met; the situation that large livestock is limited insufficiently or small livestock is excessively bound is avoided, and the stress response of the livestock is reduced.

Description

Technical Field

[0001] This invention relates to the field of limiting device technology, specifically to a mechanical limiting device for a livestock weighing platform with separate pens. Background Technology

[0002] Livestock generally refers to animals that are raised and bred by humans for agricultural production. It can be understood as a general term for livestock and poultry. In the modern livestock breeding industry, accurate weighing of livestock is of great significance for scientific breeding management, precise feed delivery, disease prevention and control, and sales.

[0003] However, existing devices have the following problems:

[0004] Currently, existing livestock weighing and limiting devices have many limitations. On the one hand, some devices use fixed fence structures, which cannot be flexibly adjusted according to different sizes and types of livestock, resulting in poor applicability. When fencing pigs or cattle and sheep with large differences in size, the fixed fence spacing either cannot effectively restrict the movement of large livestock, causing them to shake violently during weighing and affecting the accuracy of the data, or it can easily cause excessive restraint on small livestock, and may even trigger stress reactions in the livestock, causing unnecessary losses. On the other hand, the traditional device's penning function is relatively simple, and it mostly relies on manual operation, which not only consumes a lot of manpower, but also has a slow penning speed and is prone to penning errors, making it difficult to meet the efficient management needs of large-scale farming. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a mechanical limit device for a tiered livestock weighing platform, which has advantages such as convenient adjustment and solves the problem of cumbersome adjustment.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a mechanical limiting device for a livestock weighing platform with separate pens, comprising a supporting base plate, wherein: a enclosure frame is fixedly installed on the top of the supporting base plate, a fixing frame is fixedly installed on the top of the supporting base plate, and the two sides of the fixing frame are fixedly installed on the inner sidewall of the enclosure frame; three grooves are formed on the surface of the fixing frame, and an installation groove is formed on one side of the inner wall of each of the three grooves; threaded posts for rotation are inserted into the inner walls of the three installation grooves; installation blocks are threadedly connected to the outer surfaces of the three threaded posts; a blocking mechanism is fixedly installed on one side of each of the three installation blocks; two partitions are fixedly installed on one side of the fixing frame, and installation plates are slidably connected to one side of each of the two partitions; two blocking mechanisms are fixedly installed on the top of the supporting base plate; and a weighing sensor is provided on the top of the supporting base plate.

[0009] Preferably, a caster wheel is fixedly installed at the bottom of the support base plate, and a brake pad is provided inside the caster wheel.

[0010] Preferably, the shielding mechanism includes a connecting frame and a grid plate, with one side of the connecting frame fixedly installed on the side of the mounting block, and the outer surface of the grid plate fixedly installed on the inner wall of the connecting frame.

[0011] Preferably, a sliding groove is provided on the other side of each of the three grooves, and a slider is slidably connected to the inner wall of each of the three sliding grooves. One side of each of the three sliders is fixedly installed on the other side of the three blocking mechanisms.

[0012] Preferably, three servo motors are fixedly installed on the top of the mounting bracket, and the output ends of the three servo motors are respectively connected to the end keys of three threaded columns.

[0013] Preferably, two limiting grooves are provided on both sides of the inner wall of the enclosure frame and on both sides of the two partitions, and limiting blocks are slidably connected to the inner walls of the multiple limiting grooves, and the surfaces of the multiple limiting blocks are respectively fixedly installed on the sides of the two mounting plates.

[0014] Preferably, each of the plurality of limiting blocks has a positioning rod threadedly connected to its surface, and the other end of each of the plurality of positioning rods abuts against the inner wall of the plurality of limiting grooves.

[0015] Preferably, the blocking mechanism includes a fixed plate, a through groove, and a baffle. The fixed plate is fixedly installed on the top of the supporting base plate, the through groove is opened on the side of the fixed plate, and the baffle is inserted into the inner wall of the through groove.

[0016] Preferably, the blocking mechanism further includes a fixing block and a hydraulic rod, wherein the fixing block is fixedly installed on the side of the fixing plate, and the hydraulic rod is fixedly installed on one side of the fixing block.

[0017] Preferably, the blocking mechanism further includes a support block, which is fixedly installed at one end of the hydraulic rod, and one side of the support block is fixedly installed with one side of the baffle.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a mechanical limiting device for a pens-type livestock weighing platform, which has the following beneficial effects:

[0020] This mechanical limiting device for livestock weighing platforms, featuring threaded columns, mounting blocks, and a blocking mechanism on a fixed frame, allows for flexible adjustment of the blocking mechanism's position. This accommodates the needs of different sizes and types of livestock, preventing insufficient restraint for large animals or excessive restraint for small animals, thus reducing stress. The blocking mechanism, with its hydraulic rod driving a baffle to extend within the slot, combined with two partitions and a slidingly connected mounting plate, enables automated penning. Compared to traditional manual penning, this significantly increases penning speed, reduces error rates, and meets the demands of efficient management in large-scale farming. The well-designed enclosure frame, fixed frame, and the coordinated connections between components ensure a stable overall structure. The limiting groove, limiting block, and positioning rod facilitate the adjustment and fixation of the mounting plate, further enhancing the device's flexibility and stability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the mechanical limiting device for the livestock weighing platform in the pen type proposed in this invention.

[0022] Figure 2 This is a schematic diagram of the fixing block structure of the mechanical limiting device for the livestock weighing platform in the pen type proposed in this invention;

[0023] Figure 3 This is a schematic diagram of the connecting frame structure of the mechanical limiting device for the livestock weighing platform in this invention.

[0024] Figure 4 This is a schematic diagram of the fixing frame structure of the mechanical limiting device for the livestock weighing platform in this invention.

[0025] Figure 5 This is a schematic diagram of the partition structure of the mechanical limiting device for the livestock weighing platform in the pen type proposed in this invention.

[0026] In the diagram: 1. Support base plate; 2. Enclosure frame; 3. Fixing frame; 4. Groove; 5. Mounting groove; 6. Mounting block; 7. Servo motor; 8. Partition plate; 9. Limiting groove; 10. Limiting block; 11. Positioning rod; 12. Covering mechanism; 13. Blocking mechanism; 14. Slide groove; 15. Sliding block; 16. Mounting plate; 17. Caster wheel; 18. Threaded column; 19. Weighing sensor; 1201. Connecting frame; 1202. Mesh plate; 1301. Fixing plate; 1302. Through groove; 1303. Baffle; 1304. Fixing block; 1305. Hydraulic rod; 1306. Support block. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 5 This invention provides a mechanical limiting device, which is applied to scenarios where fences need to be adjusted according to different needs. In this embodiment, the structure of the mechanical limiting device is improved to make it easier to adjust. Specifically, taking fence adjustment as an example, as a preferred solution in this embodiment, the mechanical limiting device is a mechanical limiting device for a tiered livestock weighing platform, which can conveniently adjust the fence.

[0029] Please see Figures 1 to 5 The present invention provides a technical solution: a mechanical limiting device for a livestock weighing platform with separate pens. This mechanical limiting device is mainly used in scenarios where ceramic workpieces are cut according to different needs.

[0030] The system includes a support base plate 1, wherein: a fencing frame 2 is fixedly installed on the top of the support base plate 1, a fixing frame 3 is fixedly installed on the top of the support base plate 1, and the two sides of the fixing frame 3 are fixedly installed on the inner sidewall of the fencing frame 2; the surface of the fixing frame 3 has three grooves 4, and one side of the inner wall of each of the three grooves 4 has an installation groove 5; the inner wall of each of the three installation grooves 5 is inserted with a threaded post 18 for rotation; the outer surface of each of the three threaded posts 18 is threadedly connected with an installation block 6; one side of each of the three installation blocks 6 is fixedly installed with a blocking mechanism 12; one side of the fixing frame 3 is fixedly installed with two partitions 8, and one side of each of the two partitions 8 is slidably connected with an installation plate 16; the top of the support base plate 1 is fixedly installed with two blocking mechanisms 13; and a weighing sensor 19 is provided on the top of the support base plate 1.

[0031] In this embodiment, the supporting base plate 1 serves as the fundamental load-bearing structure of the entire device, providing a platform for the installation and fixation of other components. Its sturdy material can withstand the weight of the livestock and the pressure generated during the operation of each component, ensuring the overall stability of the device. It is the basic carrier for realizing the weighing and limiting functions. The enclosure frame 2, fixedly installed on top of the supporting base plate 1, forms an outer enclosure around the weighing area, restricting the livestock's movement range and preventing them from running off the platform during weighing. Together with other components, it constructs a closed weighing space for weighing. The device provides a stable environment for the partition operation. The fixed frame 3 is fixed to the inner wall of the enclosure frame 2 on both sides, forming the frame structure of the device together with the enclosure frame 2, enhancing overall stability. Grooves 4 and mounting slots 5 are provided on the surface of the fixed frame 3. Grooves 4 guide the horizontal movement of the mounting block 6, while mounting slots 5 are used to insert the threaded post 18. The two cooperate to provide a track and support for the threaded post 18 to drive the mounting block 6 and the blocking mechanism 12, ensuring the smoothness and precision of the limit adjustment process. The threaded post 18 is mounted on the fixed frame 3 through the mounting slots 5 and can rotate under the drive of the servo motor 7. The surface threads engage with the mounting block 6, converting the block's rotational motion into horizontal linear motion, which in turn moves the blocking mechanism 12, allowing for flexible adjustment of the limiting range. The mounting block 6 is threadedly connected to the threaded post 18, which moves horizontally along the groove 4 as the post 18 rotates. The blocking mechanism 12 is fixedly mounted on one side of the mounting block 6, and its movement adjusts the position of the blocking mechanism 12 to accommodate the limiting needs of livestock of different sizes. The partition plate 8 is fixedly mounted on one side of the fixed frame 3, cooperating with the enclosure frame 2 to further divide the weighing area and provide guidance for the sliding of the mounting plate 16. The support plate 16, together with the mounting plate 16, the blocking mechanism 13 and other components, enables the livestock to be divided into pens. The mounting plate 16 is slidably connected to the partition plate 8 and its position can be adjusted according to the pensing requirements. It works with the baffle 1303 to form different pensing channels. By changing the position of the mounting plate 16, the pensing space can be flexibly adjusted to adapt to the pensing requirements of livestock of different weights and numbers. The weighing sensor 19 is set on the top of the support plate 1 and directly contacts the weight of the livestock, converting the pressure applied by the livestock into electrical signals or other measurable signals.

[0032] A caster wheel 17 is fixedly installed at the bottom of the support base plate 1. The caster wheel 17 has a brake pad inside. By installing the caster wheel 17 at the bottom of the support base plate 1, the device has flexible mobility. According to the actual needs of the farmers, the farmers can easily move the device to different breeding areas or weighing locations, which improves the convenience and applicability of the device.

[0033] The shielding mechanism 12 includes a connecting frame 1201 and a grid plate 1202. One side of the connecting frame 1201 is fixedly installed on the side of the mounting block 6, and the outer surface of the grid plate 1202 is fixedly installed on the inner wall of the connecting frame 1201. Through the setting of the shielding mechanism 12, one side of the connecting frame 1201 is fixed to the side of the mounting block 6, which serves to connect the mounting block 6 and the grid plate 1202, transmit the movement of the mounting block 6 to the grid plate 1202, and at the same time provide a frame for the grid plate 1202 to be fixed. The grid plate 1202 is installed on the inner wall of the connecting frame 1201 to form a limiting barrier for livestock. The grid design can effectively restrict the movement of livestock, ensure that the livestock have a certain field of vision, reduce their panic, optimize the weighing environment, and avoid excessive restraint on the livestock.

[0034] Each of the three grooves 4 has a sliding groove 14 on the other side. The inner wall of each of the three sliding grooves 14 is slidably connected to a slider 15. One side of each slider 15 is fixedly installed on the other side of the three blocking mechanisms 12. Through the arrangement of the sliding grooves 14 and the sliders 15, the sliding grooves 14 on the other side of the grooves 4 cooperate with the sliders 15 installed on the other side of the blocking mechanism 12 to provide auxiliary guidance for the movement of the blocking mechanism 12, enhance its stability and accuracy during movement, and prevent the blocking mechanism 12 from deviating or shaking during movement.

[0035] Three servo motors 7 are fixedly installed on the top of the fixed frame 3. The output ends of the three servo motors 7 are respectively connected to the end keys of the three threaded columns 18. By setting the servo motors 7 and fixing them on the top of the fixed frame 3, the output ends are connected to the end keys of the threaded columns 18 to provide power for the rotation of the threaded columns 18. By precisely controlling the rotation direction and angle of the servo motors 7, the position of the blocking mechanism 12 can be precisely adjusted to meet different limit requirements.

[0036] Two limiting grooves 9 are provided on both sides of the inner wall of the enclosure frame 2 and on both sides of the two partitions 8. The inner walls of the multiple limiting grooves 9 are slidably connected to limiting blocks 10. The surfaces of the multiple limiting blocks 10 are respectively fixedly installed on the sides of the two mounting plates 16. With the setting of the limiting grooves 9, and with the cooperation of the limiting blocks 10, the limiting grooves 9 are provided on both sides of the inner wall of the enclosure frame 2 and both sides of the partitions 8, providing a sliding track for the limiting blocks 10, while limiting the movement direction and range of the mounting plates 16, ensuring the stability and accuracy of the mounting plates 16 during the adjustment process.

[0037] Each of the multiple limit blocks 10 has a threaded connection to a positioning rod 11. The other end of the multiple positioning rods 11 abuts against the inner wall of the multiple limit grooves 9. The positioning rods 11 are threadedly connected to the limit blocks 10. After the mounting plate 16 is adjusted to the appropriate position, the positioning rods 11 are tightened so that the other end abuts against the inner wall of the limit groove 9, which firmly fixes the mounting plate 16 and prevents it from shifting during use, thus ensuring the stability and reliability of the column division function.

[0038] The blocking mechanism 13 includes a fixed plate 1301, a through groove 1302, and a baffle 1303. The fixed plate 1301 is fixedly installed on the top of the supporting base plate 1. The through groove 1302 is formed on the side of the fixed plate 1301. The baffle 1303 is inserted into the inner wall of the through groove 1302. Through the setting of the blocking mechanism 13, the fixed plate 1301 is fixedly installed on the top of the supporting base plate 1, providing an installation base for components such as the through groove 1302, the baffle 1303, and the fixing block 1304. It is the supporting structure of the blocking mechanism 13, ensuring the overall blocking mechanism 13 is secure. The stability of the baffle 1303 is achieved through the setting of the through groove 1302, which is opened on the side of the fixed plate 1301. This provides space and guidance for the raising and lowering of the baffle 1303, allowing the baffle 1303 to move smoothly in the vertical direction and control the opening and closing of the livestock passage. The baffle 1303 is inserted into the inner wall of the through groove 1302 and extends out of the through groove 1302 to block and allow livestock to pass. When the baffle 1303 is raised, it can prevent livestock from passing through. When the baffle 1303 is lowered, it provides a passage for livestock to be separated into pens.

[0039] The blocking mechanism 13 also includes a fixing block 1304 and a hydraulic rod 1305. The fixing block 1304 is fixedly installed on the side of the fixing plate 1301, and the hydraulic rod 1305 is fixedly installed on one side of the fixing block 1304. The fixing block 1304 is fixedly installed on the side of the fixing plate 1301 to install the hydraulic rod 1305 and transmit the force of the hydraulic rod 1305 to the fixing plate 1301, ensuring the stability and reliability of the hydraulic rod 1305 during operation. The hydraulic rod 1305 is installed on one side of the fixing block 1304 and drives the baffle 1303 to extend out of the through groove 1302 through telescopic movement. Compared with traditional manual operation, the hydraulic rod 1305 drive has the advantages of strong power, rapid action, and precise control, which can realize fast and accurate column separation operation and improve column separation efficiency and accuracy.

[0040] The blocking mechanism 13 also includes a support block 1306, which is fixedly installed at one end of the hydraulic rod 1305. One side of the support block 1306 is fixedly installed on one side of the baffle 1303. Through the setting of the support block 1306, the support block 1306 is fixedly installed at one end of the hydraulic rod 1305 and fixedly connected to one side of the baffle 1303, which serves to connect the hydraulic rod 1305 and the baffle 1303, and smoothly transmit the extension and retraction movement of the hydraulic rod 1305 to the baffle 1303, ensuring the stability of the baffle 1303 during the lifting process.

[0041] All electrical components mentioned in this article are electrically connected to an external main controller, which can be a conventional known device such as a computer for control.

[0042] In summary, the mechanical limit device of this pen-type livestock weighing platform, when in use:

[0043] 1. First, use the casters 17 at the bottom of the support base plate 1 to move the mechanical limit device of the livestock weighing platform to a suitable weighing location. After reaching the designated location, activate the brake pads inside the casters 17 to firmly fix the device to the ground, preventing the device from shifting during the subsequent weighing process and ensuring the accuracy of the weighing data.

[0044] 2. Next, guide the livestock into the weighing platform. After the livestock enters, the livestock stands on the support base plate 1. The weighing sensor 19 located at the top of the support base plate 1 directly contacts the weight of the livestock and converts the pressure applied by the livestock into an electrical signal or other measurable signal to complete the collection of the livestock weight data.

[0045] 3. Then, according to the weighing data and the pre-set pensing rules, the hydraulic rod 1305 in the blocking mechanism 13 is activated. The hydraulic rod 1305 moves in extension and retraction, and through the support block 1306, the baffle 1303 is extended to open or close the passage. When it is necessary to guide the livestock to a specific pen area, the baffle 1303 of the corresponding passage is shortened, while the baffles 1303 of other passages are kept extended to form a pen passage for the livestock. The livestock are guided to leave the weighing platform through the open pen passage and enter the corresponding pen area. Then, the servo motor 7 can be activated. The servo motor 7 works and drives the threaded column 18 to rotate through the servo motor 7 at the top of the fixed frame 3. When the threaded column 18 rotates, the mounting block 6, which is threaded to the threaded column 18, moves horizontally along the groove 4, thereby driving the blocking mechanism 12 on one side of the mounting block 6 to adjust and rise to a certain height to guide the livestock into the corresponding pen space.

[0046] 4. Finally, adjust the column space. The mounting plate 16, which is slidably connected to the partition 8, can be manually adjusted. After sliding the mounting plate 16 along the limiting groove 9 to the appropriate position, tighten the positioning rod 11 on the surface of the limiting block 10 so that its other end is pressed against the inner wall of the limiting groove 9 to fix the position of the mounting plate 16. The column space setting is then complete.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical limiting device for a pen-type livestock weighing platform, characterized in that, Includes a supporting base plate (1), wherein: A fencing frame (2) is fixedly installed on the top of the supporting base plate (1). A fixing frame (3) is fixedly installed on the top of the supporting base plate (1), and the two sides of the fixing frame (3) are fixedly installed on the inner side wall of the fencing frame (2). Three grooves (4) are opened on the surface of the fixing frame (3). An installation groove (5) is opened on one side of the inner wall of each of the three grooves (4). A threaded column (18) for rotation is inserted into the inner wall of each of the three installation grooves (5). An installation block (6) is threadedly connected to the outer surface of each of the three threaded columns (18). A blocking mechanism (12) is fixedly installed on one side of each of the three installation blocks (6). Two partitions (8) are fixedly installed on one side of the fixing frame (3). An installation plate (16) is slidably connected to one side of each of the two partitions (8). Two blocking mechanisms (13) are fixedly installed on the top of the supporting base plate (1). A weighing sensor (19) is provided on the top of the supporting base plate (1).

2. The mechanical limiting device for the livestock weighing platform in a pen according to claim 1, characterized in that: The bottom of the support base plate (1) is fixedly equipped with a caster wheel (17), and the caster wheel (17) is provided with a brake pad inside.

3. The mechanical limiting device for the livestock weighing platform in a pen according to claim 1, characterized in that: The shielding mechanism (12) includes a connecting frame (1201) and a grid plate (1202). One side of the connecting frame (1201) is fixedly installed on the side of the mounting block (6), and the outer surface of the grid plate (1202) is fixedly installed on the inner wall of the connecting frame (1201).

4. The mechanical limiting device for the livestock weighing platform in a pen according to claim 1, characterized in that: Each of the three grooves (4) has a sliding groove (14) on the other side, and each of the three sliding grooves (14) has a slider (15) slidably connected to its inner wall. One side of each of the three sliders (15) is fixedly installed on the other side of the three blocking mechanisms (12).

5. The mechanical limiting device for the livestock weighing platform in a pen according to claim 1, characterized in that: Three servo motors (7) are fixedly installed on the top of the mounting bracket (3), and the output ends of the three servo motors (7) are respectively connected to the end keys of the three threaded columns (18).

6. The mechanical limiting device for the livestock weighing platform in a pen according to claim 1, characterized in that: Two limiting grooves (9) are provided on both sides of the inner wall of the enclosure frame (2) and on both sides of the two partitions (8). The inner walls of the multiple limiting grooves (9) are slidably connected to limiting blocks (10). The surfaces of the multiple limiting blocks (10) are respectively fixedly installed on the sides of the two mounting plates (16).

7. The mechanical limiting device for the livestock weighing platform in a pen according to claim 6, characterized in that: Each of the multiple limiting blocks (10) has a positioning rod (11) threadedly connected to its surface, and the other end of each of the multiple positioning rods (11) abuts against the inner wall of the multiple limiting grooves (9).

8. The mechanical limiting device for the livestock weighing platform in a pen according to claim 1, characterized in that: The blocking mechanism (13) includes a fixed plate (1301), a through groove (1302) and a baffle (1303). The fixed plate (1301) is fixedly installed on the top of the supporting base plate (1). The through groove (1302) is opened on the side of the fixed plate (1301). The baffle (1303) is inserted into the inner wall of the through groove (1302).

9. The mechanical limiting device for the livestock weighing platform in a pen according to claim 8, characterized in that: The blocking mechanism (13) further includes a fixing block (1304) and a hydraulic rod (1305). The fixing block (1304) is fixedly installed on the side of the fixing plate (1301), and the hydraulic rod (1305) is fixedly installed on one side of the fixing block (1304).

10. The mechanical limiting device for the livestock weighing platform in a pen according to claim 9, characterized in that: The blocking mechanism (13) also includes a support block (1306), which is fixedly installed at one end of the hydraulic rod (1305), and one side of the support block (1306) is fixedly installed with one side of the baffle (1303).

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