A broiler breeding rack that is easy to disassemble

Abstract

The present invention relates to a broiler breeding rack that is easy to disassemble, comprising a base, a honeycomb panel, a limiting seat and a top plate, wherein the honeycomb panel is fixed inside the base, the limiting seat is fixed on the upper surface of the honeycomb panel, the top plate is arranged above the honeycomb panel, the upper end surface of the honeycomb panel is provided with a folding mechanism, the upper end surface of the top plate is provided with a connecting mechanism, and the interior of the base is provided with a fixing mechanism. The broiler breeding rack that is easy to disassemble can remove the latch from the interior of the positioning cylinder by pulling the handle, and then fold the two first guardrails and the two second guardrails, thereby effectively reducing the volume of the entire breeding rack, that is, facilitating transfer after disassembly, and at the same time, by pushing the two pull rods to drive the positioning plate connected thereto to move, after the positioning plate is removed from the interior of the two card plates, the two first guardrails and the two second guardrails can be removed from the interior of the base, effectively solving the problem that the various components of the cage cannot be freely disassembled and assembled.

Description

Technical Field

[0001] The invention relates to the technical field of broiler breeding, in particular to a broiler breeding rack which is easy to disassemble. Background Art

[0002] Broiler chickens are the most common poultry raised by humans. Domestic chickens originated from wild jungle fowl and have been domesticated for at least 4,000 years. However, it was not until around 1800 that chicken and eggs became mass-produced commodities.

[0003] Chinese invention patent publication number: (CN105900857B) A chicken and poultry breeding rack with a drinking water device, including a frame, openings on both sides of the frame, two horizontal partitions and one vertical partition inside the frame, four support columns at the lower end of the frame, the chicken and poultry breeding rack with a drinking water device, the equipment is a three-dimensional breeding rack, breeding by the breeding rack saves the bottom area, a water level sensor is provided on the equipment, the water level in the water tank can be known through the water level sensor, according to the feedback result of the water level sensor, when water needs to be supplied, the water tank can be automatically filled with water through the electric valve, the equipment is also provided with an electric heating rod, according to the feedback result of the temperature sensor, when heating is needed, the breeding rack is heated by the electric heating rod, saving a lot of fuel resources, the equipment has a simple structure, easy operation, saves a lot of human resources, and provides convenience for breeding workers.

[0004] The applicant found through searching that the above patent still has certain deficiencies. When the breeding rack needs to be transferred and transported, the components of the cage cannot be freely disassembled and assembled, and the fixed shape is also difficult to recycle, resulting in the abandonment of breeding rack resources. Therefore, a broiler breeding rack that is easy to disassemble is proposed to solve the above technical problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a broiler breeding rack that is easy to disassemble, which has the advantages of *easy disassembly and the like, and solves the problem that the components of the cage cannot be freely disassembled and assembled.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a broiler breeding rack that is easy to disassemble, comprising a base, a honeycomb panel, a limit seat, and a top plate, wherein the honeycomb panel is fixed inside the base, the limit seat is fixed to the upper surface of the honeycomb panel, the top plate is arranged above the honeycomb panel, a folding mechanism is provided on the upper end surface of the honeycomb panel, a connecting mechanism is provided on the upper end surface of the top plate, and a fixing mechanism is provided inside the base;

[0007] Among them, the folding mechanism includes two first guardrails, two second guardrails and a splicing assembly. The two first guardrails are hinged to the rear second guardrail through a hinge shaft. The first guardrail on the left is hinged to the front second guardrail through a hinge shaft. The upper end faces of the first guardrail and the second guardrail are fixed with a positioning block that penetrates one side and extends to the upper end face of the top plate. A door frame is fixed to the inside of the first guardrail on the right, and a door panel is hinged to the inside of the door frame through a hinge shaft.

[0008] Furthermore, the first guardrail and the second guardrail are both attached to the upper surface of the honeycomb panel and are located between the base and the side opposite to the limit seat, and the top plate is attached to the upper end surfaces of the two first guardrails and the two second guardrails.

[0009] Furthermore, the top plate is provided with four through holes for four positioning blocks to pass through respectively, and the limiting seat is in the shape of a rectangular parallelepiped with a hollow interior and missing upper and lower end faces.

[0010] Furthermore, the splicing assembly includes a positioning cylinder fixed to the right side of the second front guardrail, and a mounting cylinder located above the positioning cylinder is fixed to the front of the first guardrail on the right side. The interior of the mounting cylinder is connected through a pin with one end extending into the interior of the positioning cylinder, and a baffle is fixed on the outer side of the pin, one side of which is affixed to the bottom wall of the inner cavity of the mounting cylinder, and a first spring is fixed on the upper surface of the baffle to the top wall of the inner cavity of the mounting cylinder, and a handle located above the mounting cylinder is fixed on the upper end surface of the pin.

[0011] Furthermore, the first spring is sleeved on the outside of the latch, and the top wall and the bottom wall of the inner cavity of the installation cylinder are both provided with movable through holes for the latch to move up and down.

[0012] The cam is fixed to the upper surface of the top plate, the cam is fixed to the inside of the cam, the bottom wall of the inner cavity of the cam is fixed with a rotating rod with one end passing through and extending to the upper end surface of the cover plate, the upper end surface of the rotating rod is fixed with a handwheel rotatably connected to the upper surface of the cover plate, the outer side of the rotating rod is fixed with a sleeve located inside the cam, the outer side of the sleeve is fixed with four connecting rods, the ends of the four connecting rods away from the sleeve are fixed with an extrusion plate, the connecting mechanism also includes four plug rods that are all connected to the inside of the cam, the ends of the four plug rods close to the sleeve are fixed with a driving plate, the side of the driving plate away from the sleeve is fixed with a second spring on one side of which is attached to the inner wall of the cam, and the ends of the four plug rods away from the driving plate are fixed with a plug plate on one side passing through the positioning block.

[0013] Furthermore, the shapes of the extrusion plate and the driving plate are both arc-shaped, and the shape of the mounting seat is a cylinder with a hollow interior and a missing upper end surface.

[0014] Furthermore, the second spring is sleeved on the outer side of the insertion rod, and the outer sides of the four insertion rods are all penetrated and connected with a support block whose one side is fixed to the upper surface of the top plate.

[0015] Furthermore, the fixing mechanism includes a positioning plate slidably connected to the left and right side walls of the base inner cavity, two limit blocks are fixed on the outside of the positioning plate and are respectively attached to both sides of the base, and pull rods are fixed on the left and right sides of the positioning plate. The fixing mechanism also includes two clamping plates fixed on the lower end faces of the two first guardrails, and the front side of the positioning plate passes through and extends to the interior of the two clamping plates.

[0016] Furthermore, openings for inserting the card boards are provided inside the two card boards, and both openings face the direction of the card boards. Square openings are provided on the left and right side walls of the base cavity for the card boards to slide back and forth.

[0017] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0018] 1. The broiler breeding rack that is easy to disassemble is constructed by pulling the handle to remove the pin from the inside of the positioning cylinder, and then folding the two first guardrails and the two second guardrails, thereby effectively reducing the volume of the entire breeding rack, that is, it is easy to transfer after disassembly. At the same time, by pushing the two pull rods to move the positioning plates connected thereto, after the positioning plates are moved out from the inside of the two clamping plates, the two first guardrails and the two second guardrails can be moved out from the inside of the base, effectively solving the problem that the various components of the cage cannot be freely disassembled and assembled.

[0019] 2. The broiler breeding rack that is easy to disassemble, through the elastic force of four second springs, the four second springs respectively push the four driving plates to move toward the direction of the sleeve, and at the same time drive the four plug rods and four plug plates to move, and the four plug plates are respectively moved out from the inside of the four positioning blocks. At this time, the top plate can be removed from the upper end surfaces of the two first guardrails and the two second guardrails. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the folding mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the splicing assembly of the present invention;

[0023] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at center A;

[0024] Figure 5 Schematic diagram of the connection mechanism of the present invention;

[0025] Figure 6 Schematic diagram of the internal structure of the connecting mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the fixing mechanism of the present invention;

[0027] Figure 8 This is a bottom view of the fixing mechanism of the present invention;

[0028] Figure 9 It is a schematic diagram of the top view of the fixing mechanism of the present invention.

[0029] In the figure: 1. base; 2. honeycomb panel; 3. limit seat; 4. top plate; 5. folding mechanism; 501. first guardrail; 502. second guardrail; 503. positioning block; 504. door frame; 505. door panel; 506. positioning cylinder; 507. mounting cylinder; 508. latch; 509. baffle; 510. first spring; 511. handle; 6. connecting mechanism; 601. mounting seat; 602. cover plate; 603. rotating rod; 604. handwheel; 605. sleeve; 606. connecting rod; 607. extrusion plate; 608. insertion rod; 609. driving plate; 610. second spring; 611. insertion plate; 7. fixing mechanism; 701. positioning plate; 702. limit block; 703. pull rod; 704. card plate. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1 In this embodiment, a broiler breeding rack that is easy to disassemble includes a base 1, a honeycomb panel 2, a limiting seat 3 and a top plate 4. The honeycomb panel 2 is fixed inside the base 1, the limiting seat 3 is fixed on the upper surface of the honeycomb panel 2, the top plate 4 is arranged above the honeycomb panel 2, the upper end surface of the honeycomb panel 2 is provided with a folding mechanism 5, the upper end surface of the top plate 4 is provided with a connecting mechanism 6, and the inside of the base 1 is provided with a fixing mechanism 7.

[0032] See also Figure 2-4In order to facilitate folding, the folding mechanism 5 in this embodiment includes two first guardrails 501, two second guardrails 502 and a splicing assembly. The two first guardrails 501 are hinged to the rear second guardrail 502 through a hinge shaft, and the left first guardrail 501 is hinged to the front second guardrail 502 through a hinge shaft. When the breeding rack is installed, the two folded first guardrails 501 and the second guardrail 502 are first unfolded. The upper end surfaces of the first guardrail 501 and the second guardrail 502 are fixed with a positioning block 503 that penetrates one side and extends to the upper end surface of the top plate 4. A door frame 504 is fixed to the inside of the first guardrail 501 on the right side, and a door panel 505 is hinged to the inside of the door frame 504 through a hinge shaft. By arranging the door frame 504 and the door panel 505 inside the first guardrail 501 on the right side, it is convenient for broilers to enter and exit.

[0033] The first guardrail 501 and the second guardrail 502 are both attached to the upper surface of the honeycomb panel 2 and are located between the base 1 and the opposite side of the limit seat 3. The top plate 4 is attached to the upper end surfaces of the two first guardrails 501 and the two second guardrails 502. Four through holes are opened inside the top plate 4 for four positioning blocks 503 to pass through respectively. The four positioning blocks 503 are respectively clearance-fitted inside the four through holes. The limit seat 3 is shaped like a rectangular parallelepiped with a hollow interior and missing upper and lower end surfaces.

[0034] The splicing assembly includes a positioning cylinder 506 fixed to the right side of the second front guardrail 502, a mounting cylinder 507 located above the positioning cylinder 506 is fixed to the front of the first right guardrail 501, the interior of the mounting cylinder 507 is connected through a latch 508 with one end extending to the interior of the positioning cylinder 506, and a baffle 509 is fixed on the outside of the latch 508, one side of which is attached to the bottom wall of the inner cavity of the mounting cylinder 507. By pulling the handle 511, the latch 508 connected to it moves upward, and the latch 508 moves upward during the movement. The process drives the baffle 509 connected to it to move upward. A first spring 510 is fixed on the upper surface of the baffle 509, one side of which is fixed to the top wall of the inner cavity of the mounting cylinder 507. The upper end surface of the latch 508 is fixed with a handle 511 located above the mounting cylinder 507. The baffle 509 moves upward to squeeze the first spring 510. When the mounting cylinder 507 moves to just above the positioning cylinder 506, the handle 511 is released and the first spring 510 rebounds to push the baffle 509 connected to it to move downward.

[0035] The first spring 510 is sleeved on the outside of the latch 508. The first spring 510 rebounds and pushes the latch 508 to move downward and extend to the inside of the positioning cylinder 506. The top wall and bottom wall of the inner cavity of the installation cylinder 507 are both provided with movable through holes for the latch 508 to move up and down.

[0036] The folding mechanism 5 in this embodiment moves the latch 508 out from the interior of the positioning cylinder 506 by pulling the handle 511, and then folds the two first guardrails 501 and the two second guardrails 502, thereby effectively reducing the volume of the entire breeding rack.

[0037] See also Figure 5-6 In order to facilitate the connection between the top plate 4 and the two first guardrails 501 and the two second guardrails 502, the connecting mechanism 6 in this embodiment includes a mounting seat 601 fixed to the upper surface of the top plate 4, the top plate 4 is placed on the upper end surfaces of the two first guardrails 501 and the two second guardrails 502, the positioning blocks 503 on the upper end surfaces of the two first guardrails 501 and the two second guardrails 502 are extended to the upper end surface of the top plate 4, the interior of the mounting seat 601 is fixed with a cover plate 602, the bottom wall of the inner cavity of the mounting seat 601 is fixed with a rotating rod 603 with one end passing through and extending to the upper end surface of the cover plate 602, and the rotating rod 603 is fixed. A handwheel 604 rotatably connected to the upper surface of the cover 602 is fixed to the upper end surface of 03, and a sleeve 605 located inside the mounting seat 601 is fixed to the outer side of the rotating rod 603. The rotating rod 603 connected to it is rotated by rotating the handwheel 604, and the rotating rod 603 drives the sleeve 605 on its outer side to rotate. Four connecting rods 606 are fixed to the outer side of the sleeve 605, and an extrusion plate 607 is fixed to the end of the four connecting rods 606 away from the sleeve 605. The four connecting rods 606 on the outer side are driven to rotate by the sleeve 605, and the four extrusion plates 607 are driven to rotate by the four connecting rods 606.

[0038] The connecting mechanism 6 also includes four insertion rods 608 that are all connected to the inside of the mounting seat 601. The four insertion rods 608 are fixed with a driving plate 609 at one end close to the sleeve 605. When the extrusion plate 607 contacts the driving plate 609, the four extrusion plates 607 push the four driving plates 609 to move respectively. The side of the driving plate 609 away from the sleeve 605 is fixed with a second spring 610 on one side of which is attached to the inner wall of the mounting seat 601. The ends of the four insertion rods 608 away from the driving plate 609 are fixed with an insertion plate 611 on one side that penetrates the positioning block 503. When the driving plate 609 moves, it also drives the insertion rods 608 connected to it to move. The four insertion rods 608 respectively drive the four insertion plates 611 to extend to the inside of the four positioning blocks 503.

[0039] The extrusion plate 607 and the drive plate 609 are both arc-shaped, the mounting seat 601 is shaped like a cylinder with a hollow interior and a missing upper end face, the second spring 610 is sleeved on the outside of the insertion rod 608, and the outsides of the four insertion rods 608 are all connected to a support block fixed on one side to the upper surface of the top plate 4.

[0040] The connecting mechanism 6 in this embodiment drives the four inserting plates 611 to extend to the inside of the four positioning blocks 503 through the four inserting rods 608, thereby clamping the two first guardrails 501 and the two second guardrails 502, and the splicing of the entire breeding rack is completed at this time.

[0041] See also Figure 7-9 In order to facilitate the connection between the base 1 and the two first guardrails 501 and the two second guardrails 502, the fixing mechanism 7 in this embodiment includes a positioning plate 701 slidably connected to the left and right side walls of the inner cavity of the base 1, and then the two second guardrails 502 and the two first guardrails 501 are placed on the upper surface of the honeycomb panel 2 and located on the outside of the limit seat 3. Two limit blocks 702 are fixed on the outside of the positioning plate 701 and are respectively attached to both sides of the base 1. Pull rods 703 are fixed on the left and right sides of the positioning plate 701. The fixing mechanism 7 also includes two clamping plates 704 fixed to the lower end surfaces of the two first guardrails 501. The two clamping plates 704 on the lower end surfaces of the two first guardrails 501 extend to the bottom of the honeycomb panel 2, and the front side of the positioning plate 701 passes through and extends to the inside of the two clamping plates 704.

[0042] The interior of the two card plates 704 is provided with an opening for inserting the card plates 704. By moving the positioning plate 701 to the interior of the two card plates 704, the connection between the two second guardrails 502 and the two first guardrails 501 and the base 1 is completed at this time, and the two openings are facing the direction of the card plates 704. The left and right side walls of the inner cavity of the base 1 are provided with square openings for the card plates 704 to slide back and forth.

[0043] The fixing mechanism 7 in this embodiment moves the positioning plate 701 to the inside of the two clamping plates 704 , thereby completing the connection between the two second guardrails 502 and the two first guardrails 501 and the base 1 .

[0044] The working principle of the above embodiment is:

[0045] (1) When installing the breeding rack, first unfold the two folded first guardrails 501 and the second guardrail 502, then pull the handle 511 to drive the connected pin 508 to move upward, and the pin 508 drives the baffle 509 connected to it to move upward during the movement, and at the same time squeezes the first spring 510. When the installation cylinder 507 moves to the top of the positioning cylinder 506, release the handle 511 and the first spring 510 rebounds to push the baffle 509 connected to it to move downward, and the pin 508 moves downward accordingly and extends to the inside of the positioning cylinder 506. At this time, the connection between the second guardrail 502 and the first guardrail 501 is completed. Then, the two second guardrails 502 and the two first guardrails 501 are placed on the upper surface of the honeycomb panel 2 and located on the outside of the limit seat 3. The two card plates 704 on the lower end faces of the two first guardrails 501 are extended to the bottom of the honeycomb panel 2. By moving the positioning plate 701 to the inside of the two card plates 704, the connection is completed. The two second guardrails 502 and the two first guardrails 501 are connected to the base 1. At this time, the top plate 4 is placed on the upper end surfaces of the two first guardrails 501 and the two second guardrails 502, and the positioning blocks 503 on the upper end surfaces of the two first guardrails 501 and the two second guardrails 502 are extended to the upper end surface of the top plate 4. By rotating the hand wheel 604, the rotating rod 603 connected to it is rotated, and the rotating rod 603 drives the sleeve 605 on its outer side to rotate, and the sleeve 605 drives the four connecting rods on its outer side to rotate. The rod 606 rotates, and the four extrusion plates 607 are driven to rotate through the four connecting rods 606. When the extrusion plates 607 come into contact with the driving plates 609, the four extrusion plates 607 push the four driving plates 609 to move, and at the same time drive the plug rods 608 connected thereto to move. The four plug rods 608 drive the four plug plates 611 to extend to the inside of the four positioning blocks 503, thereby clamping the two first guardrails 501 and the two second guardrails 502. At this time, the splicing of the entire breeding rack is completed.

[0046] (2) When the breeding rack needs to be disassembled, first rotate the hand wheel 604 in the opposite direction to separate the four extrusion plates 607 from the four drive plates 609. Through the elastic force of the four second springs 610, the four second springs 610 push the four drive plates 609 to move toward the sleeve 605, and at the same time drive the four insertion rods 608 and the four insertion plates 611 to move. The four insertion plates 611 are respectively moved out from the inside of the four positioning blocks 503. At this time, the top plate 4 can be separated from the two first guardrails 501. The upper end surfaces of the two second guardrails 502 are removed, and then the two pull rods 703 are pushed to drive the positioning plate 701 connected thereto to move. After the positioning plate 701 is moved out from the inside of the two clamping plates 704, the two first guardrails 501 and the two second guardrails 502 can be moved out from the inside of the base 1, and the pin 508 is moved out from the inside of the positioning cylinder 506 by pulling the handle 511, and then the two first guardrails 501 and the two second guardrails 502 are folded, thereby effectively reducing the volume of the entire breeding rack.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

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

Claims

1. A broiler chicken breeding rack that is easy to disassemble, comprising a base, a honeycomb panel, a limit seat and a top plate, characterized in that: The honeycomb panel is fixed inside the base, the limit seat is fixed on the upper surface of the honeycomb panel, the top plate is arranged above the honeycomb panel, the upper end surface of the honeycomb panel is provided with a folding mechanism, the upper end surface of the top plate is provided with a connecting mechanism, and the interior of the base is provided with a fixing mechanism; The folding mechanism includes two first guardrails, two second guardrails and a splicing assembly. The two first guardrails are hinged to the rear second guardrail through a hinge shaft. The left first guardrail is hinged to the front second guardrail through a hinge shaft. The upper end surfaces of the first guardrail and the second guardrail are fixed with a positioning block that penetrates one side and extends to the upper end surface of the top plate. The interior of the right first guardrail is fixed with a door frame, and the interior of the door frame is hinged with a door panel through a hinge shaft. The splicing assembly includes a positioning cylinder fixed to the right side of the second front guardrail, a mounting cylinder located above the positioning cylinder is fixed to the front face of the first guardrail on the right side, a latch with one end extending into the interior of the positioning cylinder is connected through the interior of the mounting cylinder, a baffle with one side affixed to the bottom wall of the inner cavity of the mounting cylinder is fixed to the outer side of the latch, a first spring with one side fixed to the top wall of the inner cavity of the mounting cylinder is fixed to the upper surface of the baffle, and a handle located above the mounting cylinder is fixed to the upper end surface of the latch; The outer end of the four sliding panels is fixed with a button bar, and the button bar has a button bar that is adapted to move relative to the button bar, and the button bar has a lockhole that is formed on the side of the four sliding panels. The fixing mechanism includes a positioning plate slidably connected to the left and right side walls of the base cavity, two limit blocks are fixed on the outer side of the positioning plate and are respectively attached to the two sides of the base, and pull rods are fixed on the left and right sides of the positioning plate. The fixing mechanism also includes two clamping plates fixed to the lower end surfaces of the two first guardrails, and the front side of the positioning plate passes through and extends to the interior of the two clamping plates; The insides of the two card plates are both provided with openings for inserting the card plates, and both openings face the direction of the card plates. The left and right side walls of the base inner cavity are both provided with square openings for the card plates to slide back and forth.

2. The easily disassembled broiler breeding rack according to claim 1, characterized in that: The first guardrail and the second guardrail are both attached to the upper surface of the honeycomb panel and are located between the base and the side opposite to the limit seat. The top plate is attached to the upper end surfaces of the two first guardrails and the two second guardrails.

3. The easily disassembled broiler breeding rack according to claim 1, characterized in that: The top plate is provided with four through holes for four positioning blocks to pass through respectively. The limiting seat is in the shape of a rectangular parallelepiped with a hollow interior and missing upper and lower end faces.

4. The easily disassembled broiler breeding rack according to claim 1, characterized in that: The first spring is sleeved on the outside of the latch, and the top wall and the bottom wall of the inner cavity of the installation cylinder are both provided with moving through holes for the latch to move up and down.

5. The easily disassembled broiler breeding rack according to claim 1, characterized in that: The extrusion plate and the driving plate are both arc-shaped, and the mounting seat is shaped like a cylinder with a hollow interior and a missing upper end surface.

6. The easily disassembled broiler breeding rack according to claim 1, characterized in that: The second spring is sleeved on the outer side of the insertion rod, and the outer sides of the four insertion rods are all penetrated and connected with a support block whose one side is fixed on the upper surface of the top plate.

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