Fabricated concealed fire hydrant

Abstract

The invention discloses an assembly type concealed fire hydrant, belongs to the field of fire hydrants, and aims to solve the problems that water pipes in a fire hydrant box body are generally rolled together or randomly thrown together after being used, so that the heat dissipation effect is poor and the fire hydrant is easy to damage when a fire disaster occurs. A wall is arranged on the outer side of the shell, a light composite board is arranged between the wall and the shell, the light composite board is fixedly connected with the wall, the water inlet pipe is arranged in the lower portion of the shell, the water outlet hose communicates with the outer side of the water inlet pipe, and the spray head is fixedly connected to the other end of the water outlet hose. And when the water outlet hose completes fire extinguishing, the elastic mechanism can automatically collect and tidy the water outlet hose, so that the purpose of reducing the damage condition of the water outlet hose is achieved.

Description

Technical Field

[0001] The invention relates to the field of fire hydrants, and in particular to an assembled concealed fire hydrant. Background Art

[0002] The cold feed pin venting extruder is a device for melting and extruding rubber. Its main purpose is to melt the rubber and squeeze out the bubbles inside it to reduce the internal cavity of the rubber.

[0003] The publication number is CN215367555U, which relates to a concealed fire hydrant structure based on a fire wall, which includes a fireproof board and a steel lining board. The fireproof board is lined on the front side of the concealed cavity of the fire wall, the steel lining board is arranged in close contact with the fireproof board, and the top of the steel lining board is provided with a folded edge, the folded edge is hoisted on the top of the concealed cavity, and the fire hydrant box is detachably fixedly installed on the steel lining board. In order to prevent the high temperature from damaging the fire-fighting equipment inside the fire hydrant box during a fire, the existing concealed fire hydrants have added lightweight composite panels for insulation. However, after use, the water pipes inside the fire hydrant box are generally rolled together or thrown together at random. When a fire occurs, the heat dissipation effect is poor and it is easy to cause damage.

[0004] To solve the above problems, a prefabricated concealed fire hydrant is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an assembled concealed fire hydrant, which solves the problem that the water pipes inside the fire hydrant box are generally rolled together or thrown together at random after use, which will lead to poor heat dissipation effect and easy damage when a fire occurs.

[0006] To achieve the above object, the present invention provides the following technical solutions: an assembled concealed fire hydrant, comprising a shell, a wall is arranged outside the shell, a lightweight composite board is arranged between the wall and the shell, the lightweight composite board is connected to the wall in a fixed manner, a water inlet pipe is arranged inside the lower part of the shell, a water outlet hose is connected to the outside of the water inlet pipe, a nozzle is fixedly connected to the other end of the water outlet hose, an elastic mechanism is arranged inside the upper part of the shell, and a pushing mechanism is arranged above the water inlet pipe;

[0007] The pushing mechanism includes a limit assembly and a rotating assembly, and the rotating assembly is arranged on one side of the limit assembly;

[0008] The elastic mechanism includes a first connecting plate slidably connected to the upper inner wall of the shell, the upper inner wall of the shell is provided with a first slide groove, the inner side of the first slide groove is provided with a first slider, the inner side of the first connecting plate is provided with a first hole, the inner side of the first hole is provided with a pull plate, the inner side of the pull plate is provided with a second hole, the water outlet hose is nested in the inner side of the second hole, a third connecting plate is fixedly connected to the inner side wall of the shell above away from the first connecting plate, the inner side of the third connecting plate is provided with a third hole, the water outlet hose is nested in the inner side of the third hole, a first guide groove is provided on the lower inner wall of the first slide groove, a first guide rod is provided on the inner side of the first guide groove, a first groove is provided on the inner side of the first slider, a fourth hole is connected to the lower side of the first groove, a pull rod is provided on the inner side of the first groove, the first guide rod is connected to the pull rod in a fixed manner, the pull rod is connected to the pull plate in a fixed manner, an end of the first slider close to the third connecting plate is fixedly connected to a spring, and the spring is connected to the shell in a fixed manner.

[0009] Preferably, the appearance and structural shape of the first sliding block is a cuboid, and the outer side surface of the first sliding block fits with the upper and lower inner side surfaces of the first sliding groove.

[0010] Preferably, the appearance structure of the first guide groove near one end of the first connecting plate is wavy, and the appearance structure of the first guide groove near one end of the third connecting plate is straight, and the central axis of the first guide groove near one end of the third connecting plate is parallel to the central axis of the first slide groove.

[0011] Preferably, the length of the pull rod is smaller than the length of the first groove, and the appearance structure of the pull rod is a rectangular parallelepiped.

[0012] Preferably, a guide hole is provided inside the lower part of the first connecting plate, the limiting assembly includes a second guide rod arranged on the inner side of the guide hole, a second guide groove is provided on the upper inner wall of the shell, the second guide rod is nested on the inner side of the second guide groove, a point a is provided on the outer side of the second guide groove near one end of the third connecting plate, a point b is provided on the inner side of the second guide groove near one end of the third connecting plate, a point c is provided on the outer side of the second guide groove near one end of the first connecting plate, and a point d is provided on the inner side of the second guide groove near one end of the first connecting plate, a second groove is provided on the inner wall below the second guide groove, an elastic rubber pad is provided on the inner side of the second groove, the lower end of the elastic rubber pad is fixedly connected to the limiting plate, a second slide groove is connected on the inner wall of the guide hole, a second slide groove is provided on the inner side of the second slide groove, and the second slide block is connected to the second guide rod in a fixed manner.

[0013] Preferably, the position height of point a of the second guide groove is higher than the position height of point b of the second guide groove, and the position height of point c of the second guide groove is lower than the position height of point d of the second guide groove.

[0014] Preferably, a plurality of second grooves are provided, and the second grooves are equidistantly distributed on the upper inner side of the second guide groove.

[0015] Preferably, the inner side wall of the second groove is in contact with the outer side wall of the limiting plate, and the upper end surface of the limiting plate is an inclined surface.

[0016] Preferably, the rotating assembly includes a threaded rod threadedly connected to the interior above the water inlet pipe, the upper end of the threaded rod is fixedly connected to a gear, the end of the second guide rod away from the second guide groove is fixedly connected to a rack, and the lower end of the threaded rod is fixedly connected to a baffle.

[0017] Preferably, the upper and lower widths of the rack are greater than the upper and lower widths of the gear, and the lateral length of the rack is consistent with the length of the wavy first guide groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides an assembled concealed fire hydrant, which is provided with an elastic mechanism so that the water outlet hoses can be automatically collected and sorted when the fire is extinguished. Compared with the prior art, there is a certain distance between the water outlet hoses during sorting, so that the heat dissipation effect is better when a fire occurs, thereby achieving the purpose of reducing the damage to the water outlet hoses.

[0020] 2. The present invention provides an assembled concealed fire hydrant, which is provided with a pushing mechanism. When the water outlet hose is pulled out for fire extinguishing, the elastic mechanism is driven to move and then the pushing mechanism is driven to move laterally, so that the valve of the water inlet pipe is opened to discharge water, thereby achieving the purpose of saving time and speeding up the fire extinguishing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the front cross-sectional structure of the housing of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the housing of the present invention when viewed from above;

[0024] Figure 4 It is a schematic diagram of the right side cross-sectional structure of the housing of the present invention;

[0025] Figure 5 It is a front view structural schematic diagram of the second guide groove of the present invention;

[0026] Figure 6 For the present invention Figure 3 Schematic diagram of the structure at A in the middle;

[0027] Figure 7For the present invention Figure 4 Schematic diagram of the structure at point B in the middle.

[0028] In the figure: 1, shell; 2, wall; 3, lightweight composite board; 4, water inlet pipe; 5, water outlet hose; 6, nozzle; 7, elastic mechanism; 8, pushing mechanism; 81, limit assembly; 82, rotating assembly; 701, first connecting plate; 702, first slide groove; 703, first slider; 704, first hole; 705, pull plate; 706, second hole; 707, third connecting plate; 708, third hole; 709, first guide groove ...9, first guide groove; 701, first connecting plate; 709, first slide groove; 701, first connecting plate; 702, first slide groove; 703, first slider; 704, first hole; 705, pull plate; 706, second hole; 707, third connecting plate; 708, third hole; 709, first guide groove; 709, first connecting plate; 709, first guide groove; 709, first connecting plate; 709, first guide groove; 709, first connecting plate; 709, first slide groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 709, first sliding groove; 10. First guide rod; 711. First groove; 712. Fourth hole; 713. Pull rod; 714. Spring; 9. Guide hole; 8101. Second guide rod; 8102. Second guide groove; 8103. Second groove; 8104. Elastic rubber pad; 8105. Limit plate; 8106. Second slide groove; 8107. Second slider; 8201. Threaded rod; 8202. Gear; 8203. Rack; 8204. Baffle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: an assembled concealed fire hydrant, comprising a shell 1, a wall 2 is arranged on the outside of the shell 1, a lightweight composite board 3 is arranged between the wall 2 and the shell 1, the lightweight composite board 3 is connected to the wall 2 in a fixed manner, an inlet pipe 4 is arranged inside the lower part of the shell 1, a water outlet hose 5 is connected to the outside of the inlet pipe 4, a nozzle 6 is fixedly connected to the other end of the outlet hose 5, an elastic mechanism 7 is arranged inside the upper part of the shell 1, and a pushing mechanism 8 is arranged above the inlet pipe 4;

[0031] The pushing mechanism 8 includes a limit assembly 81 and a rotating assembly 82, and the rotating assembly 82 is arranged on one side of the limit assembly 81;

[0032] The elastic mechanism 7 includes a first connecting plate 701 slidably connected to the upper inner wall of the shell 1, a first slide groove 702 is provided on the upper inner wall of the shell 1, a first slider 703 is provided inside the first slide groove 702, the appearance and structure of the first slider 703 is a rectangular parallelepiped, and the outer side surface of the first slider 703 is in contact with the upper and lower inner sides of the first slide groove 702, so that the first slider 703 does not shake when moving inside the first slide groove 702, a first hole 704 is provided inside the first connecting plate 701, and a pull plate 703 is provided inside the first hole 704. 5, a second hole 706 is provided inside the pull plate 705, and the water outlet hose 5 is nested inside the second hole 706. A third connecting plate 707 is fixedly connected to the inner side wall above the housing 1 away from the first connecting plate 701, and a third hole 708 is provided inside the third connecting plate 707. The water outlet hose 5 is nested inside the third hole 708. A first guide groove 709 is provided on the inner wall below the first slide groove 702. The appearance structure of the first guide groove 709 near the end of the first connecting plate 701 is wavy, and the first guide groove 709 near the end of the third connecting plate 707 is The appearance structure is linear, and the central axis of one end of the first guide groove 709 close to the third connecting plate 707 is parallel to the central axis of the first slide groove 702, so that the first guide rod 710 can not move forward and backward when it moves inside the wavy groove of the first guide groove 709, and the first guide rod 710 can not move forward and backward when it moves inside the linear groove of the first guide groove 709. The first guide rod 710 is arranged on the inner side of the first guide groove 709, and the first groove 711 is arranged on the inner side of the first slider 703. The lower part of the first groove 711 is connected to the fourth The hole 712 and the inner side of the first groove 711 are provided with a pull rod 713, the first guide rod 710 is connected to the pull rod 713 in a fixed connection, the pull rod 713 is connected to the pull plate 705 in a fixed connection, the first slider 703 is fixedly connected to one end close to the third connecting plate 707 with a spring 714, the spring 714 is connected to the outer shell 1 in a fixed connection, the length of the pull rod 713 is less than the length of the first groove 711, and the appearance structure of the pull rod 713 is a rectangular parallelepiped, so that the pull rod 713 does not rotate when it moves back and forth inside the first groove 711.

[0033] A guide hole 9 is provided inside the lower part of the first connecting plate 701, and the limiting assembly 81 includes a second guide rod 8101 provided inside the guide hole 9. A second guide groove 8102 is provided on the upper inner wall of the housing 1, and the second guide rod 8101 is nested inside the second guide groove 8102. A point a is provided outside the second guide groove 8102 near one end of the third connecting plate 707, and a point b is provided inside the second guide groove 8102 near one end of the third connecting plate 707. A point c is arranged on the outer side of one end of the connecting plate 701, and a point d is arranged on the inner side of the second guide groove 8102 near one end of the first connecting plate 701. The height of the position of the point a of the second guide groove 8102 is higher than the height of the position of the point b of the second guide groove 8102, and the height of the position of the point c of the second guide groove 8102 is lower than the height of the position of the point d of the second guide groove 8102, so that when the second guide rod 8101 moves to the position of the point a and moves back, the second guide rod 8101 can move to the upper inner side of the second guide groove 8102. When the second guide rod 8101 moves to the position of point d and moves back, the second guide rod 8101 can move to the lower inner side of the second guide groove 8102, a second groove 8103 is provided on the lower inner wall of the second guide groove 8102, an elastic rubber pad 8104 is provided on the inner side of the second groove 8103, the lower end of the elastic rubber pad 8104 is fixedly connected to the limiting plate 8105, a second slide groove 8106 is connected to the inner wall of the guide hole 9, and a second slider 8106 is provided on the inner side of the second slide groove 8106 107. The second slider 8107 is connected to the second guide rod 8101 in a fixed connection. A plurality of second grooves 8103 are provided, and the second grooves 8103 are equidistantly distributed on the upper inner side of the second guide groove 8102. The inner wall of the second groove 8103 fits with the outer wall of the limit plate 8105, and the upper end surface of the limit plate 8105 is an inclined surface, so that when the second guide rod 8101 moves to the left, the limit plate 8105 can be pushed to move upward.

[0034] The rotating assembly 82 includes a threaded rod 8201 threadedly connected to the upper part of the water inlet pipe 4, the upper end of the threaded rod 8201 is fixedly connected to a gear 8202, the end of the second guide rod 8101 away from the second guide groove 8102 is fixedly connected to a rack 8203, the lower end of the threaded rod 8201 is fixedly connected to a baffle 8204, the upper and lower widths of the rack 8203 are greater than the upper and lower widths of the gear 8202, and the lateral length of the rack 8203 is consistent with the length of the wavy first guide groove 709, so that the gear 8202 moves upward and is still within the control range of the rack 8203.

[0035] When a fire occurs and the water hose 5 and the nozzle 6 need to be taken out for fire extinguishing, the water hose 5 and the nozzle 6 are pulled outward to move. Because the water hose 5 is nested on the inner side of the second hole 706, friction is generated when the water hose 5 fits with the pull plate 705, driving the pull plate 705 and the first connecting plate 701 to move toward the third connecting plate 707, so that when the water hose 5 moves at the turning point of the pull plate 705, the scab on the inner side of the water hose 5 is deformed, causing the scab on the inner side of the water hose 5 to rupture. When the pull plate 705 and the first connecting plate 701 move toward the third connecting plate 707, the first slider 703, the pull plate 705 and the pull rod 713 are driven to move toward the third connecting plate 707, so that the pull rod 713 is engaged with the pull plate 705. The fixedly connected first guide rod 710 moves, and because the appearance structure of the first guide groove 709 near the end of the first connecting plate 701 is wavy, and the appearance structure of the first guide groove 709 near the end of the third connecting plate 707 is straight, and the central axis of the first guide groove 709 near the end of the third connecting plate 707 is parallel to the central axis of the first slide groove 702, when the first guide rod 710 moves inside the wavy groove, it drives the first guide rod 710 to drive the pull rod 713 and the pull plate 705 to move back and forth, and drives the water outlet hose 5 inside the second hole 706 after nesting to move back and forth, and squeezes the other direction of the water outlet hose 5 to rupture and form a crust, thereby achieving the purpose of reducing blockage inside the water outlet hose 5.

[0036] When the first connecting plate 701 moves laterally, it drives the second slider 8107 and the second guide rod 8101 to move to the left, driving the rack 8203 fixedly connected to the second guide rod 8101 to move laterally, so that the gear 8202 and the threaded rod 8201 rotate, so that the baffle 8204 moves upward and moves through the connection between the water outlet hose 5 and the water inlet pipe 4, so that water enters the inner side of the water outlet hose 5 to realize water discharge, thereby achieving the purpose of saving time and quickly extinguishing the fire.

[0037] When the second guide rod 8101 moves past the limit plate 8105, the limit plate 8105 limits the second guide rod 8101, which can prevent the water outlet hose 5 from slipping out of the hand and being reset under the action of the spring 714 when the rack 8203 fails to fully open the gear 8202, and needs to be opened again, thereby reducing the waste of time.

[0038] When the water outlet hose 5 is discharging water, the pull plate 705 squeezes the water outlet hose 5 so that the water can push the scab that is about to break, thereby achieving a better scab removal effect.

[0039] Because the wave groove of the first guide groove 709 is only a certain distance away, and the rack 8203 will also leave the range of the gear 8202 during the movement, when the pull plate 705 is just pulled to squeeze the water outlet hose 5, it will not be squeezed when the water outlet pressure of the water outlet hose 5 is too high, saving effort.

[0040] When the water outlet hose 5 has completed water discharge, its water pressure can straighten the water outlet hose 5, so that the first connecting plate 701 drives the second guide rod 8101 to point a of the second guide groove 8102. At this time, the rack 8203 is driven by the second guide rod 8101 to move upward. At this time, the handle above the rotating gear 8202 closes the water inlet pipe 4, and the water pressure inside the water outlet hose 5 is reduced. Under the action of the spring 714, the first connecting plate 701 and the first slider 703 are reset under the elastic force of the spring 714, pulling the water outlet hose 5 with lower water pressure to reset and retract. After the water outlet hose 5 is retracted, the surface of the water outlet hose 5 is not in contact, so that when the temperature is high during a fire, the water outlet hose 5 can dissipate heat better.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled concealed fire hydrant, comprising a housing (1), a wall (2) disposed outside the housing (1), a lightweight composite board (3) disposed between the wall (2) and the housing (1), the lightweight composite board (3) and the wall (2) being connected in a fixed manner, a water inlet pipe (4) disposed inside the lower portion of the housing (1), a water outlet hose (5) connected to the outside of the water inlet pipe (4), and a nozzle (6) fixedly connected to the other end of the water outlet hose (5), characterized in that: An elastic mechanism (7) is provided inside the upper part of the housing (1), and a pushing mechanism (8) is provided above the water inlet pipe (4); The pushing mechanism (8) comprises a limit assembly (81) and a rotating assembly (82), wherein the rotating assembly (82) is arranged on one side of the limit assembly (81); The elastic mechanism (7) comprises a first connecting plate (701) slidably connected to the upper inner wall of the shell (1); a first sliding groove (702) is provided on the upper inner wall of the shell (1); a first sliding block (703) is provided on the inner side of the first sliding groove (702); a first hole (704) is provided on the inner side of the first connecting plate (701); a pulling plate (705) is provided on the inner side of the first hole (704); a second hole (706) is provided inside the pulling plate (705); the water outlet hose (5) is nested inside the second hole (706); a third connecting plate (707) is fixedly connected to the inner side wall of the upper side of the shell (1) away from the first connecting plate (701); a third hole (708) is provided inside the third connecting plate (707); the water outlet hose (5) is nested inside the second hole (706); On the inner side of the third hole (708), a first guide groove (709) is arranged on the lower inner wall of the first slide groove (702), a first guide rod (710) is arranged on the inner side of the first guide groove (709), a first groove (711) is arranged on the inner side of the first slider (703), the lower side of the first groove (711) is connected to the fourth hole (712), a pull rod (713) is arranged on the inner side of the first groove (711), the first guide rod (710) and the pull rod (713) are connected in a fixed manner, the pull rod (713) and the pull plate (705) are connected in a fixed manner, a spring (714) is fixedly connected to one end of the first slider (703) close to the third connecting plate (707), and the spring (714) and the outer shell (1) are connected in a fixed manner.

2. The assembled concealed fire hydrant according to claim 1, characterized in that: The appearance and structural shape of the first sliding block (703) is a rectangular parallelepiped, and the outer side surface of the first sliding block (703) fits with the upper and lower inner side surfaces of the first sliding groove (702).

3. The assembled concealed fire hydrant according to claim 1, characterized in that: The appearance structure of the first guide groove (709) at one end close to the first connecting plate (701) is wavy, and the appearance structure of the first guide groove (709) at one end close to the third connecting plate (707) is straight, and the central axis of the first guide groove (709) at one end close to the third connecting plate (707) is parallel to the central axis of the first slide groove (702).

4. The assembled concealed fire hydrant according to claim 1, characterized in that: The length of the pull rod (713) is smaller than the length of the first groove (711), and the appearance structure of the pull rod (713) is a rectangular parallelepiped.

5. The assembled concealed fire hydrant according to claim 1, characterized in that: A guide hole (9) is provided inside the lower part of the first connecting plate (701), the limiting assembly (81) includes a second guide rod (8101) provided inside the guide hole (9), a second guide groove (8102) is provided on the upper inner wall of the housing (1), the second guide rod (8101) is nested inside the second guide groove (8102), a point a is provided on the outer side of one end of the second guiding groove (8102) close to the third connecting plate (707), a point b is provided on the inner side of one end of the second guiding groove (8102) close to the third connecting plate (707), and a point c is provided on the outer side of one end of the second guiding groove (8102) close to the first connecting plate (701). There is point c, point d is arranged on the inner side of one end of the second guide groove (8102) close to the first connecting plate (701), a second groove (8103) is provided on the inner wall below the second guide groove (8102), an elastic rubber pad (8104) is arranged on the inner side of the second groove (8103), the lower end of the elastic rubber pad (8104) is fixedly connected to a limiting plate (8105), a second slide groove (8106) is connected on the inner wall of the guide hole (9), a second slider (8107) is arranged on the inner side of the second slide groove (8106), and the second slider (8107) is connected to the second guide rod (8101) in a fixed manner.

6. The assembled concealed fire hydrant according to claim 5, characterized in that: The position height of point a of the second guide groove (8102) is higher than the position height of point b of the second guide groove (8102), and the position height of point c of the second guide groove (8102) is lower than the position height of point d of the second guide groove (8102).

7. The assembled concealed fire hydrant according to claim 5, characterized in that: A plurality of the second grooves (8103) are provided, and the second grooves (8103) are evenly distributed on the upper inner side of the second guide groove (8102).

8. The assembled concealed fire hydrant according to claim 5, characterized in that: The inner wall of the second groove (8103) is in contact with the outer wall of the limiting plate (8105), and the upper end surface of the limiting plate (8105) is an inclined surface.

9. The assembled concealed fire hydrant according to claim 1, characterized in that: The rotating assembly (82) includes a threaded rod (8201) threadedly connected to the interior above the water inlet pipe (4); the upper end of the threaded rod (8201) is fixedly connected to a gear (8202); the end of the second guide rod (8101) away from the second guide groove (8102) is fixedly connected to a rack (8203); and the lower end of the threaded rod (8201) is fixedly connected to a baffle (8204).

10. The assembled concealed fire hydrant according to claim 9, characterized in that: The upper and lower widths of the rack (8203) are greater than the upper and lower widths of the gear (8202), and the lateral length of the rack (8203) is consistent with the length of the wavy first guide groove (709).

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