Shelf assembly and refrigeration equipment

Abstract

The utility model provides a shelf assembly and refrigeration equipment, the shelf assembly comprises a shelf, an adjusting mechanism, a limiting mechanism and a synchronizing mechanism, the shelf comprises a shelf plate and two connecting pieces connected to the two sides of the shelf plate, and the connecting pieces are provided with mounting holes; the adjusting mechanisms are arranged on the two sides of the shelf and connected with the connecting pieces, each adjusting mechanism comprises a rack and a gear, the racks are arranged in the first direction, and the gears are rotationally connected with the connecting pieces and engaged with the racks; the limiting mechanism comprises a ratchet wheel arranged on the connecting piece; the synchronizing mechanism comprises a synchronizing rod and two synchronizing wheels detachably connected to the two ends of the synchronizing rod, the synchronizing wheels are meshed with the gears and are coaxial with the ratchet wheels, one sides of the synchronizing wheels are detachably connected with the synchronizing rod, and the other sides of the synchronizing wheels penetrate through the mounting holes to be connected with the ratchet wheels. The synchronous wheel and the ratchet wheel are clamped through the mounting hole of the connecting piece, so that the synchronous wheel, the ratchet wheel and the connecting piece are fixed, the synchronous rod and the ratchet wheel are transported separately, and the transportation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a shelf assembly and refrigeration equipment with the shelf assembly. Background Art

[0002] When the height of the shelf in the prior art is adjusted by the combination of gears and racks, a synchronization rod and a synchronization wheel meshing with the gear are usually provided, and a ratchet or a gear for limiting the height of the shelf is required. The processing sequence of the shelf is usually to set a synchronization wheel and a ratchet on the connecting parts on both sides, connect the synchronization wheels on both sides through the synchronization rod, and then transport them to the next processing plant to process the shelf. After the synchronization rod and the connecting parts are connected, the volume is large, the space is large, and the transportation cost is increased. Utility Model Content

[0003] The utility model aims to provide a shelf assembly and a refrigeration device, in which a synchronous wheel and a ratchet wheel in the shelf assembly are connected through a mounting hole on a connecting piece, thereby solving the problem in the prior art that the synchronous rod and the connecting piece are larger in size after being connected and increase the transportation cost.

[0004] In order to achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a shelf assembly, including:

[0005] A shelf, comprising a shelf and two connecting members connected to two sides of the shelf, wherein the connecting members are provided with mounting holes;

[0006] An adjustment mechanism is arranged on both sides of the shelf and connected to the connecting member, the adjustment structure comprises a rack and a gear, the rack is arranged along a first direction, the gear is rotatably connected to the connecting member and meshes with the rack;

[0007] A limiting mechanism, comprising a ratchet wheel arranged on the connecting member;

[0008] The synchronization mechanism comprises a synchronization rod and two synchronization wheels detachably connected to the two ends of the synchronization rod, wherein the synchronization wheels are meshed with the gears and are coaxially arranged with the ratchet, one side of the synchronization wheel is detachably connected to the synchronization rod, and the other side passes through the mounting hole and is connected to the ratchet.

[0009] As a further improvement of one embodiment of the utility model, a buckle is protruding from the side of the synchronous wheel close to the ratchet wheel, a clearance hole is provided on the side of the ratchet wheel close to the synchronous wheel and penetrates axially along the ratchet wheel, an abutment surface is provided on the side of the clearance hole away from the synchronous wheel, and the buckle passes through the clearance hole and abuts against the abutment surface.

[0010] As a further improvement of an embodiment of the utility model, at least two buckles are provided, and at least two buckles are provided close to each other on a side away from the abutting surface, and the ratchet is provided with a positioning hole connected to the clearance hole;

[0011] The shelf assembly is also provided with a pin, which passes through the positioning hole and is arranged between at least two buckles.

[0012] As a further improvement of an embodiment of the utility model, a protrusion is provided on the inner wall of the positioning hole, and one end of the pin away from the synchronous wheel abuts against the protrusion to prevent the pin from slipping.

[0013] As a further improvement of an embodiment of the utility model, the limiting mechanism also includes a movable rod, which includes a locking position that cooperates with the ratchet to limit the rotation of the ratchet when the shelf moves downward, and a release position after being separated from the ratchet.

[0014] As a further improvement of an embodiment of the utility model, the diameter of the gear is greater than the diameter of the synchronous wheel.

[0015] As a further improvement of an embodiment of the utility model, the adjustment mechanism is arranged near the rear end of the shelf, the movable rod can move in the front-rear direction, and is provided with a convex ring;

[0016] The limiting mechanism is also provided with an elastic member and a limiting block connected to the connecting member, the limiting block is provided with a limiting hole matching the cross section of the movable rod, the movable rod passes through the limiting hole, and the front end of the elastic member abuts against the rear end of the limiting block abuts against the convex ring.

[0017] As a further improvement of an embodiment of the utility model, the outer contour of the ratchet is an arc surface, and a circular sleeve is provided at one end of the movable rod close to the ratchet, and the circular sleeve is made of elastic material.

[0018] As a further improvement of an embodiment of the utility model, the connecting member includes a receiving portion for supporting the shelf and a side portion connected to the receiving portion;

[0019] A wrench is arranged at one end of the movable rod away from the ratchet. When the movable rod is located at the locking position, the rear end of the wrench abuts against the front end of the side portion.

[0020] An embodiment of the utility model further provides a refrigeration device, comprising a box body provided with a refrigeration compartment and a shelf assembly provided in the refrigeration compartment, wherein the shelf assembly is the shelf assembly as described above.

[0021] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:

[0022] In the shelf assembly provided by the utility model, a mounting hole is provided on the connecting piece, and the synchronizing wheel passes through the mounting hole on the side away from the synchronizing rod and is connected with the ratchet wheel, so that the synchronizing wheel and the ratchet wheel are fixed on both sides of the connecting piece. The connecting piece and the synchronizing rod can be transported in the form of loose parts, which is small in size and low in transportation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of the shelf assembly in the embodiment of the present invention.

[0024] Figure 2 yes Figure 1 A schematic structural diagram of the middle shelf assembly from another perspective.

[0025] Figure 3 yes Figure 1 Side view (inside) of the coordination of the right adjustment mechanism, synchronization mechanism and other mechanisms in the middle shelf assembly.

[0026] Figure 4 yes Figure 3 Schematic cross-sectional view along line AA.

[0027] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0028] Figure 6 yes Figure 1 Schematic diagram of the coordination of the right adjustment mechanism, synchronization mechanism and other mechanisms in the middle shelf assembly.

[0029] Figure 7 yes Figure 6 A schematic diagram of the structure from another perspective.

[0030] Figure 8 yes Figure 7 Enlarged view of center C.

[0031] Fig. 9 This is a schematic diagram of the shelf being horizontal (left) and the front end of the shelf being raised (right) when the gears, slides, and pulleys cooperate.

[0032] 1. Shelf; 11. Shelf; 12. Connector; 121. Hanging groove; 122. Receiver; 123. Side; 1231. Mounting hole; 2. Rack; 3. Gear; 4. Slide rail; 41. Slide groove; 5. Slider; 51. Pulley; 52. Fixed column; 6. Limiting piece; 61. Lock; 71. Synchronous rod; 72. Synchronous wheel; 721. Non-circular groove; 722. Buckle; 81. Ratchet; 811. Clearance hole; 8111. Abutment surface; 812. Positioning hole; 8121. Protrusion; 813. Pin; 82. Movable rod; 821. Protruding ring; 823. Wrench; 83. Spring; 84. Limiting block; 841. Limiting hole; 91. Damping wheel; 92. Damper. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Terms such as "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0035] For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The embodiment of the utility model provides a shelf assembly, which can be arranged in a refrigeration device. Therefore, the embodiment of the utility model also provides a refrigeration device, which includes a box body provided with a refrigeration compartment and the aforementioned shelf assembly arranged in the refrigeration compartment.

[0038] like Figures 1 to 5 As shown, the aforementioned shelf 1 assembly includes a shelf 1, an adjusting mechanism, a limiting mechanism and a synchronization mechanism, the shelf 1 includes a shelf 11 and two connecting members 12 connected to both sides of the shelf 11, the connecting member 12 is provided with a mounting hole 1231; the adjusting mechanism is arranged on both sides of the shelf 1 and connected to the connecting member 12, the adjusting structure includes a rack 2 and a gear 3, the rack 2 is arranged along a first direction, the gear 3 is rotatably connected to the connecting member 12 and meshes with the rack 2; the limiting mechanism includes a ratchet 81 arranged on the connecting member 12; the synchronization mechanism includes a synchronization rod 71 and two synchronization wheels 72 detachably connected to both ends of the synchronization rod 71, the synchronization wheel 72 is meshed with the gear 3 and is coaxially arranged with the ratchet 81, one side of the synchronization wheel 72 is detachably connected to the synchronization rod 71, and the other side is connected to the ratchet 81 through the mounting hole 1231. Because when the shelf assembly is in use, the shelf 1 is usually adjusted in the vertical direction, and the rack 2 and the slide rail 4 described below are also arranged in the vertical direction, this embodiment takes the shelf assembly in use as an example, so the vertical direction is used instead of the first direction below, and the side close to the user when the user is in use is the front, and the left and right directions corresponding to the user facing the shelf assembly are the left and right directions of the shelf assembly.

[0039] The shelf 1 in the shelf 1 assembly provided by the utility model is adjusted in height by meshing the gear 3 and the rack 2, and a synchronization mechanism for improving the synchronization of both sides of the shelf 1 and a limiting mechanism for limiting the position after the height adjustment are provided, wherein, in order to achieve synchronization, the synchronization wheel 72 needs to mesh with the gear 3, and the ratchet 81 is coaxially arranged with the synchronization wheel 72, so as to limit the rotation of the ratchet 81 and lock the position of the synchronization wheel 72 and the gear 3. When the shelf 1 is assembled, since the shelf 11 needs to be transported to the factory for final installation, the synchronization rod 71, the synchronization wheel 72, the ratchet 81 and the connecting member 12 need to be fixed during transportation. The utility model fixes the synchronization wheel 72 and the ratchet 81 on both sides of the connecting member 12, so that the synchronization rod 71 and the synchronization wheel 72 can be transported to the factory as separate parts, and then the two ends of the synchronization rod 71 can be directly connected to the synchronization wheel 72, thereby reducing transportation costs.

[0040] Furthermore, a buckle 722 is protruding from the side of the synchronous wheel 72 close to the ratchet 81, and a clearance hole 811 is provided on the side of the ratchet 81 close to the synchronous wheel 72 and penetrates the ratchet 81 axially. An abutment surface 8111 is provided on the side of the clearance hole 811 away from the synchronous wheel 72, and the buckle 722 passes through the clearance hole 811 and abuts against the abutment surface 8111.

[0041] Specifically, Figure 5In the figure, the ratchet 81 protrudes toward the mounting hole 1231 at the position corresponding to the mounting hole 1231 on the side close to the synchronous wheel 72, and is provided with a clearance hole 811. The buckle 722 passes through the clearance hole 811 and also passes through the mounting hole 1231, thereby finally fixing the synchronous wheel 72, the ratchet 81 and the connecting member 12.

[0042] Furthermore, at least two buckles 722 are provided, and at least two buckles 722 are arranged close to each other on the side away from the abutting surface 8111, and the ratchet 81 is provided with a positioning hole 812 connected to the clearance hole 811; the shelf assembly is also provided with a pin 813, and the pin 814 passes through the positioning hole 812 and is arranged between at least two buckles 722. Figure 5 There are two middle buckles 722, which are arranged opposite to each other. The ratchet 81 is provided with a positioning hole 812 connected to the clearance hole 811; the shelf 1 component is also provided with a pin 813, which passes through the positioning hole 812 and is arranged between the two buckles 722 arranged opposite to each other. Since the buckle 722 needs to pass through the clearance hole 811, the length of the buckle 722 will be poor, so the swing range relying on elasticity is large. There is a risk of detachment from the clearance hole 811 in the event of a collision during transportation. Therefore, the pin 813 is arranged between the two buckles 722 arranged opposite to each other to prevent the buckle 722 from detaching. Of course, three, four or more buckles 722 can also be provided.

[0043] Furthermore, a protrusion 8121 is provided on the inner wall of the positioning hole 812 , and one end of the pin 813 away from the synchronous wheel 72 abuts against the protrusion 8121 to prevent the pin 813 from slipping off, thereby further preventing the buckle 722 from being separated from the clearance hole 811 .

[0044] In some embodiments, the limiting mechanism further includes a movable rod 82 , which includes a locking position that cooperates with the ratchet 81 to limit the rotation of the ratchet 81 when the shelf 1 moves downward, and a release position after being separated from the ratchet 81 .

[0045] Specifically, Figure 7 , 8 In the figure, the adjustment mechanism is arranged near the rear end of the shelf 1, the movable rod 82 can move in the front-to-back direction and is provided with a convex ring 821; the limiting mechanism is also provided with an elastic member and a limiting block 84 connected to the connecting member 12, the limiting block 84 is provided with a limiting hole 841 matching the cross section of the movable rod 82, the movable rod 82 passes through the limiting hole 841, and the front end of the elastic member abuts against the limiting block 84 and the rear end abuts against the convex ring 821.

[0046] The limiting members 6 are provided with two and the movable rod 82 can only move in the front-back direction through the limiting holes 841. The elastic member is preferably a spring 83, which is sleeved on the movable rod 82 and cooperates with the limiting member 6 at the front end. After the movable rod 82 is forced to move forward, the spring 83 is compressed. After the movable rod 82 loses the force, the restoring force of the spring 83 causes the movable rod 82 to move backward and cooperate with the ratchet 81 to lock the ratchet 81, thereby locking the relative movement of the gear 3 and the rack 2, thereby locking the position of the shelf 1.

[0047] When the movable rod 82 is in the locking position, if the ratchet wheel 81 moves along Figure 7 The movable rod 82 rotates counterclockwise (corresponding to the upward movement of the shelf 1), and the ratchet 81 pushes the movable rod 82 forward. It should be noted that the movable rod 82 can be completely moved to the release position or only partially moved in the direction of the release position to avoid the ratchet 81. After the shelf 1 stops moving upward, the movable rod 82 is reset to the locked position under the action of the spring 83.

[0048] If the ratchet wheel 81 has a Figure 7 The ratchet wheel 81 cannot rotate under the locking of the movable rod 82, so that the gear 3 and the rack 2 cannot move relative to each other, thereby preventing the shelf 1 from moving downward under the weight of the items placed thereon.

[0049] When the movable rod 82 is in the release position, the rotation of the ratchet wheel 81 is not restricted and can rotate in both directions, that is, the shelf 1 can move up or down.

[0050] Of course, the locking and releasing of the ratchet 81 by the movable rod 82 is not limited to the aforementioned method. The movable rod 82 can also be set to move vertically towards and away from the ratchet 81 to reach the locking position and the releasing position, or the movable rod 82 can be set horizontally to move backward to the locking position and forward to the locking position; or other settings that can realize the locking and releasing of the ratchet 81 by the movable rod 82 are not described in detail here.

[0051] Furthermore, the outer contour of the ratchet 81 is an arc surface, and a circular sleeve is provided at one end of the movable rod 82 near the ratchet 81, and the circular sleeve is made of elastic material. After the movable rod 82 moves forward, when it returns to the locked position backward under the action of the restoring force of the spring 83, the contact area between the arc surface ratchet 81 and the movable rod 82 is small. The circular sleeve provided at one end of the movable rod 82 near the ratchet 81 further reduces the contact area between the ratchet 81 and the movable rod 82, so that the contact area between the ratchet 81 and the movable rod 82 changes from the original surface contact to point contact, which greatly reduces the noise generated by the collision between the movable rod 82 and the ratchet 81; and the circular sleeve of elastic material acts as a buffer, further reducing the noise generated by the collision.

[0052] In some embodiments, the diameter of the gear 3 is larger than the diameter of the synchronous wheel 72. The diameter of the gear 3 is larger than the diameter of the synchronous wheel 72 so that when the gear 3 rotates one circle, the synchronous wheel 72 rotates more than one circle, and the ratchet 81 coaxially arranged with the synchronous wheel 72 rotates more than one circle. That is, when the shelf 1 is adjusted to the same height, the larger the diameter of the gear 3, the larger the rotation angle of the ratchet 81, the more teeth can be locked by the rotation angle of the ratchet 81 within the adjustment height, and the greater the adjustment accuracy.

[0053] In some embodiments, the connector 12 includes a receiving portion 122 for supporting the shelf 11 and a side portion 123 connected to the receiving portion 122; a wrench 823 is provided at one end of the movable rod 82 away from the ratchet 81, and when the movable rod 82 is in the locked position, the rear end of the wrench 823 abuts against the front end of the side portion 123. The wrench 823 is provided at the end of the movable rod 82 away from the ratchet 81, and the user can move the movable rod 82 from the locked position to the released position by grabbing the wrench 823 at the front end, so as to facilitate the adjustment of the shelf 1.

[0054] In some embodiments, the adjustment mechanism further includes a slide rail 4 and a slider 5. The slide rail 4 is provided with a slide groove 41 that is open to the left and right. The rack 2 is provided at the front end of the slide rail 4 with the teeth of the rack 2 facing forward. The slider 5 is provided with a pulley 51 and a fixed column 52. When the shelf 1 moves up and down, the pulley 51 slides in the slide groove 41 for guidance. The connecting member 12 is provided with a hanging groove 121 that opens downward. The hanging groove 121 is hung on the fixed column 52 to achieve the connection between the shelf 1 and the slider 5. The hanging groove 121 hangs on the fixed column 52 and can also prevent the shelf 1 from tilting forward. It should be noted that the reference numeral 51 in the figure refers to the position of the pulley 51 rather than the pulley 51 itself. The pulley 51 is blocked by the adapter and cannot be shown.

[0055] Preferably, the connecting member 12 is provided with two hanging grooves 121, and the slider 5 is provided with two pulleys 51 and two fixing posts 52. In the vertical direction, the two fixing posts 52 are provided near the middle of the slider 5, and the two pulleys 51 are provided near the two ends of the slider 5. In the horizontal direction, the width of the slide groove 41 and the width of the pulley 51 usually have an error, and because the slide groove 41 is open in the left-right direction, that is, the width direction of the slide groove 41 is the front-back direction, when the shelf 1 is naturally placed on the object or the height is adjusted upward, the pulley 51 will move forward and backward in the slide groove 41 due to the width difference between the pulley 51 and the slide groove 41, thereby causing the shelf 1 to tilt forward or the front end to be raised. Since the fixed column 52 and the pulley 51 are both arranged on the slider 5, the two have the same inclination angle, but the deflection of the pulley 51 far away from the rotation point is greater than the deflection of the fixed column 52 close to the rotation point. Therefore, when the two pulleys 51 are arranged on the outside of the two fixed columns 52, the deflection of the fixed column 52 is smaller, that is, the deflection of the shelf 1 connected to the fixed column 52 is also smaller.

[0056] Of course, the positions of the hanging groove 121 and the fixed column 52 can also be interchanged. The hanging groove 121 is set on the slider 52 and the fixed column 52 is set on the connecting piece 12. At this time, the hanging groove 121 needs to open upward, and the positional relationship between the fixed column 52 and the pulley 51 is changed to the positional relationship between the hanging groove 121 and the pulley 51, that is, in the vertical direction, the two hanging grooves 121 are set near the middle of the slider 5, and the two pulleys 51 are set near the two ends of the slider 5.

[0057] Furthermore, the adjustment mechanism further includes a stopper 6, which can move relative to the connecting member 12 to cover the opening of the hanging groove 121, so as to prevent the fixing column 52 from slipping out of the hanging groove 121. Figure 7 In the embodiment, the limit member 6 is restricted by a lock buckle 61 and can only move in the front-to-back direction. When moving forward, the limit member 6 is away from the opening of the hanging groove 121, so that the hanging groove 121 can be hung on the fixed column 52. When moving backward, the opening of the hanging groove 121 is blocked, which can prevent the hanging groove 121 from being separated from the fixed column 52 when the shelf 1 is lifted.

[0058] In some embodiments, as described above, the slider is provided with two pulleys 51, the slide rail 4 is provided with a slide groove 41, the two pulleys 51 are arranged in the slide groove 41 at intervals along the vertical direction, and the distance between the pitch circle of the gear 3 and the pitch line of the rack 2 is Among them, a and b are the distances between the axis of the gear 3 and the axis of the pulley 51 located above in the horizontal direction and the vertical direction respectively when the shelf 1 is horizontal, d is the width difference between the slide groove 41 and the pulley 51 in the horizontal direction, and H is the distance between the axis of the two pulleys 51 in the vertical direction.

[0059] like Fig. 9 In an ideal state, the shelf 1 is horizontally arranged, the distances between the axis of the gear 3 and the axis of the pulley 51 located above in the horizontal direction and the vertical direction are a and b respectively, and the angle between the axis of the gear 3 and the axis of the pulley 51 located above and the horizontal line is However, due to the width difference d between the slide groove 41 and the pulley 51, after the shelf 1 is lifted, the pulley 51 at the bottom will move forward by a distance d, so that the pulley 51 at the bottom rotates relative to the pulley 51 at the top by an angle of At this time, the angle between the axis of the gear 3 and the axis of the pulley 51 located above and the horizontal line is α-β, and the distance between the axis of the gear 3 and the axis of the pulley 51 located above in the horizontal direction is Therefore, it is necessary to reserve a distance between the gear 3 and the rack 2 in the horizontal direction after the gear 3 and the rack 2 are just meshed. This is to prevent the gear 3 and the rack 2 from getting stuck and being unable to operate after the shelf 1 is lifted or the front end of the shelf 1 where items are placed is deflected.

[0060] In some embodiments, the shelf assembly further includes a damping mechanism, which includes a damping wheel 91 and a damper 92 providing damping force for the damping wheel 91 , the damping wheel 91 is connected to the damper 92 , and the damping wheel 91 is meshed with the gear 3 .

[0061] The speed ω1 and the number of teeth z1 of the damping wheel 91 and the speed ω2 and the number of teeth z2 of the gear 3 satisfy: ω1×z1=ω2×z2 (Formula 1), then The descending speed v of shelf 1 is the linear speed of gear 3, so the speed of gear 3 is r2 is the pitch circle radius of gear 3, then

[0062] The relationship between the damping T of the damper 92 and the rotation speed ω satisfies a linear function: T = kω + b, the rotation speed ω of the damper 92 = the rotation speed ω1 of the damping wheel 91, the damping force F output by the damping wheel 91 = T / r1, r1 is the pitch circle radius of the damping wheel 91. Then the descending acceleration of the shelf 1 is 3), m is the load-bearing capacity of shelf 1, specifically the sum of the weight of shelf 1 itself and the weight of the items placed on it; if you want to keep the descending speed of shelf 1 unchanged, the descending acceleration of shelf 1 a=0, then

[0063]

[0064] Since the gear 3 is engaged with the rack 2 and cannot be replaced, the only thing to change is the pitch circle radius and the number of teeth of the damping wheel 91. And from formula 4, if the load-bearing capacity of the shelf 1 increases, the pitch circle radius r1 and / or the number of teeth z1 of the damping wheel 91 needs to be reduced.

[0065] In order to facilitate the replacement of the damping wheel 91, the connecting member 12 is provided with a through hole, the damping wheel 91 is provided with a non-circular hole along the axis, and the damper 92 is provided with a non-circular cylinder matched with the non-circular hole, and the non-circular cylinder passes through the through hole and the non-circular hole in sequence to realize the connection between the damping wheel 91 and the damper 92. Therefore, the damping wheel 91 can be removed from the non-circular cylinder for replacement according to the load-bearing capacity of the shelf 1.

[0066] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0067] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A shelf assembly, characterized in that: include: A shelf, comprising a shelf and two connecting members connected to two sides of the shelf, wherein the connecting members are provided with mounting holes; An adjustment mechanism is arranged on both sides of the shelf and connected to the connecting member, the adjustment mechanism comprises a rack and a gear, the rack is arranged along a first direction, the gear is rotatably connected to the connecting member and meshes with the rack; A limiting mechanism, comprising a ratchet wheel arranged on the connecting member; The synchronization mechanism comprises a synchronization rod and two synchronization wheels detachably connected to the two ends of the synchronization rod, wherein the synchronization wheels are meshed with the gears and are coaxially arranged with the ratchet, one side of the synchronization wheel is detachably connected to the synchronization rod, and the other side passes through the mounting hole and is connected to the ratchet.

2. The shelf assembly according to claim 1, characterized in that: A buckle is protruding from one side of the synchronous wheel close to the ratchet wheel, a clearance hole is provided on the side of the ratchet wheel close to the synchronous wheel and penetrates along the axial direction of the ratchet wheel, an abutment surface is provided on the side of the clearance hole away from the synchronous wheel, and the buckle passes through the clearance hole and abuts against the abutment surface.

3. The shelf assembly according to claim 2, characterized in that: At least two buckles are provided, and at least two buckles are provided close to each other on a side away from the abutting surface, and the ratchet is provided with a positioning hole connected to the clearance hole; The shelf assembly is also provided with a pin, which passes through the positioning hole and is arranged between at least two buckles.

4. The shelf assembly according to claim 3, characterized in that: A protrusion is arranged on the inner wall of the positioning hole, and one end of the pin away from the synchronous wheel abuts against the protrusion to prevent the pin from slipping off.

5. The shelf assembly according to claim 1, characterized in that: The limiting mechanism further includes a movable rod, which includes a locking position that cooperates with the ratchet to limit the rotation of the ratchet when the shelf moves downward, and a releasing position after being separated from the ratchet.

6. The shelf assembly according to claim 5, characterized in that: The diameter of the gear is greater than the diameter of the synchronous wheel.

7. The shelf assembly according to claim 5, characterized in that: The adjustment mechanism is arranged near the rear end of the shelf, the movable rod can move in the front-rear direction and is provided with a convex ring; The limiting mechanism is also provided with an elastic member and a limiting block connected to the connecting member, the limiting block is provided with a limiting hole matching the cross section of the movable rod, the movable rod passes through the limiting hole, and the front end of the elastic member abuts against the rear end of the limiting block abuts against the convex ring.

8. The shelf assembly according to claim 7, characterized in that: The outer contour of the ratchet is an arc surface, and a circular sleeve is arranged at one end of the movable rod close to the ratchet, and the circular sleeve is made of elastic material.

9. The shelf assembly according to claim 7, characterized in that: The connecting member comprises a receiving portion for supporting the shelf and a side portion connected to the receiving portion; A wrench is arranged at one end of the movable rod away from the ratchet. When the movable rod is located at the locking position, the rear end of the wrench abuts against the front end of the side portion.

10. A refrigeration device, characterized in that: The invention comprises a box body provided with a refrigeration compartment and a shelf assembly arranged in the refrigeration compartment, wherein the shelf assembly is the shelf assembly according to any one of claims 1 to 9.

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