Folding rack

Abstract

The utility model provides a folding rack which comprises a machine frame, supporting legs, handrails and a first locking mechanism, and the machine frame is arranged in a rectangular shape; the supporting legs are mounted at the bottom of the rack; the handrails are rotationally connected to the rack through the first hinge shafts, the four handrails are arranged, the first hinge shafts and the handrails are arranged in a one-to-one correspondence mode, two handrails are distributed on the long edge of one side of the rack at intervals, the other two handrails are distributed on the long edge of the other opposite side of the rack at intervals, and the first hinge shafts are arranged perpendicular to the long edges; the number of the first locking mechanisms is four, the first locking mechanisms and the handrails are arranged in a one-to-one correspondence mode, the first ends of the four locking mechanisms are connected with the rack, and the second ends of the first locking mechanisms are connected with the handrails. By means of the folding handrails, the size occupied by the material frame in the transportation process is reduced, and transportation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of material storage equipment technology, specifically to a folding material rack. Background Technology

[0002] During tunnel construction, the steel structure materials of various support frames need to be stacked properly using material racks. If the steel structure materials are directly stacked on the ground, they are prone to rust because the ground in the tunnel is often wet.

[0003] The current common solution is to weld material racks on-site using channel steel or I-beams to suspend and stack steel structure materials. After use, the racks are dismantled or discarded. While this method solves the problem of steel corrosion, the on-site welding of racks leads to material waste and increases production costs. Furthermore, moving the racks requires cranes, which is very inconvenient.

[0004] In conclusion, there is an urgent need for a folding rack to solve, or at least partially solve, the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a folding material rack, which aims to solve the problem that existing material racks occupy a large volume and are inconvenient to transport. The specific technical solution is as follows:

[0006] A folding rack includes a frame, legs, railings, and first locking mechanisms. The frame is rectangular. Four legs are arranged and installed at the four corners of the bottom of the frame. The rack also includes first hinge shafts, through which the railings are rotatably connected to the frame. Four railings are arranged, with each first hinge shaft corresponding to one of the railings. Two railings are spaced apart on one long side of the frame, and the other two railings are spaced apart on the opposite long side of the frame. The first hinge shafts are perpendicular to the long sides. Four first locking mechanisms are arranged, each corresponding to one of the railings. The first end of each of the four first locking mechanisms is connected to the frame, and the second end of each first locking mechanism is connected to the corresponding railing.

[0007] Furthermore, the first locking mechanism includes a first fixed shaft, a first locking rod, a first locking tongue, and a first elastic element. The first locking rod is fixedly connected to the railing; the first fixed shaft is fixedly connected to the frame; the first locking tongue is rotatably connected to the first fixed shaft to lock the first fixed shaft by rotation or unlock it by rotation; the first end of the first elastic element is connected to the first fixed shaft, and the second end of the first elastic element is connected to the first locking tongue to prevent the first locking tongue from loosening when locking.

[0008] Furthermore, a first guide slope is provided on the first locking rod, and a second guide slope is provided on the first locking tongue, with the first guide slope and the second guide slope being provided correspondingly.

[0009] Furthermore, the first locking mechanism also includes a pressing handle, which is fixedly connected to the first locking tongue and extends in a direction away from the first locking tongue.

[0010] Furthermore, it also includes a second locking mechanism and a second hinge shaft. The support leg is rotatably connected to the frame via the second hinge shaft. The first end of the second locking mechanism is connected to the frame, and the second end of the second locking mechanism is connected to the support leg.

[0011] Furthermore, the second locking mechanism includes a second fixed shaft, a second locking rod, a second locking tongue, and a second elastic element. The second locking rod is fixedly connected to the support leg, the second fixed shaft is fixedly connected to the frame, the second locking tongue is rotatably connected to the second fixed shaft, the first end of the second elastic element is connected to the second fixed shaft, and the second end of the second elastic element is connected to the second locking tongue to prevent the second locking tongue from loosening when locking.

[0012] Furthermore, it also includes a walking mechanism, which includes walking wheels and telescopic components. The fixed end of the telescopic component is fixedly connected to the outrigger along the height direction, and the walking wheels are fixedly connected to the bottom of the telescopic end of the telescopic component. The telescopic components and outriggers are arranged in a one-to-one correspondence.

[0013] Furthermore, the frame includes crossbars and longitudinal bars, with two crossbars arranged parallel to each other; multiple longitudinal bars are arranged at intervals along the length of the crossbars, all of which are perpendicular to the crossbars, and both ends of the longitudinal bars are fixedly connected to the two crossbars respectively; a receiving groove is provided on the crossbar, and a first hinge shaft is arranged in the receiving groove so that the railing can rotate into or out of the receiving groove.

[0014] Furthermore, it also includes four corner braces, one end of which is detachably connected to the frame and the second end of which is detachably connected to the support leg.

[0015] Furthermore, it also includes a material plate, which is fixedly connected to the frame and forms a storage groove between the material plate and the frame. The material plate is provided with drainage holes.

[0016] The application of the technical solution of this utility model has the following beneficial effects:

[0017] When the folding rack needs to be transported, the first locking mechanism is released, allowing the railings to rotate and fold along the first pivot. This reduces the volume occupied by the folding rack, allowing more racks to be placed in a transport vehicle of the same size, thus facilitating transportation. This design eliminates the need for on-site welding and assembly, enabling the rack to be reused, saving resources, reducing application costs, and improving economic efficiency.

[0018] Furthermore, by folding the outriggers, the volume of the folding frame is further reduced, allowing transport vehicles to carry more racks and lowering transportation costs. Secondly, it also reduces the storage space required for stacking.

[0019] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. These will be referred to below. Figures 1-6 The present invention will be further described in detail below. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of a folding material rack as described in this utility model.

[0022] Figure 2 This is a partially enlarged schematic diagram of a folding material rack support leg according to this utility model;

[0023] Figure 3 This is a partially enlarged schematic diagram of a folding material rack according to the present invention;

[0024] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 yes Figure 3 Enlarged view at point B;

[0026] Figure 6 This is a schematic diagram of the overall structure of a folding rack according to this utility model.

[0027] The components include: 1. Frame; 11. Crossbar; 111. Receiving slot; 12. Vertical bar; 2. Support leg; 3. Railing; 4. First locking mechanism; 41. First fixed shaft; 42. First locking rod; 421. First guide slope; 43. First locking tongue; 431. Second guide slope; 44. First elastic element; 45. Press handle; 5. First hinge shaft; 6. Second locking mechanism; 61. Second fixed shaft; 62. Second locking rod; 63. Second locking tongue; 64. Second elastic element; 7. Second hinge shaft; 8. Walking mechanism; 81. Walking wheel; 82. Telescopic component; 9. Angle brace; 10. Material plate; 101. Storage slot; 102. Drain hole. Detailed Implementation

[0028] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Example

[0030] See Figures 1-6 This embodiment provides a folding rack, including a frame 1, legs 2, railings 3, and a first locking mechanism 4. The frame 1 is rectangular; four legs 2 are arranged, each mounted at one of the four corners of the bottom of the frame 1; it also includes a first hinge shaft 5, through which the railings 3 are rotatably connected to the frame 1. Four railings 3 are arranged, with the first hinge shaft 5 corresponding to each railing 3. Two railings 3 are spaced apart on one long side of the frame 1, and the other two railings 3 are spaced apart on the opposite long side of the frame 1. The first hinge axis 5 is arranged perpendicular to the length of the frame 1 so that the railing 3 can rotate around the first hinge axis 5 to achieve folding along the length of the frame 1. Four first locking mechanisms 4 are arranged, one-to-one with the railing 3. The first end of each of the four first locking mechanisms 4 is connected to the frame 1, and the second end of the first locking mechanism 4 is connected to the corresponding railing 3 to lock and unlock the rotation of the railing 3. When the railing 3 is unlocked, the railing 3 can rotate and fold around the first hinge axis 5. When the railing 3 is rotated to a vertical state, the first locking mechanism 4 locks the railing 3. It should be noted that in some other embodiments of this application, more than four support legs 2 can be provided to support the frame 1, and multiple railings 3 can also be provided to limit the material on the frame 1 and prevent the material from rolling off the frame 1.

[0031] It is known that when the folding rack needs to be transported, the first locking mechanism 4 is released, allowing the railing 3 to rotate and fold along the first pivot. This reduces the volume occupied by the folding rack, allowing more racks to be placed in a transport vehicle of the same size, which is beneficial for transportation. This design eliminates the need for on-site welding and assembly, enabling the rack to be reused, saving resources, reducing application costs, and improving economic efficiency. It is worth noting that during use, rotating the railing 3 changes it from a horizontally folded state to a vertically unfolded state, and locking it with the first locking mechanism 4. Materials are placed along the length of the frame 1. Because the railing 3 rotates and folds along the length of the frame 1, the force exerted on the railing 3 by the materials is along the width of the frame 1. Therefore, when stacking materials, the force of the materials is borne by the first hinge shaft 5, and the first locking component is not subjected to force. The impact during material stacking will not damage the first locking component.

[0032] In a preferred embodiment, the frame 1 includes crossbars 11 and longitudinal bars 12. Two crossbars 11 are provided, arranged parallel to each other. Multiple longitudinal bars 12 are arranged at intervals along the length of the crossbars 11, all perpendicular to the crossbars 11, and both ends of each longitudinal bar 12 are welded and fixedly connected to two crossbars 11 respectively. A receiving groove 111 is provided on the crossbar 11, and a first hinge shaft 5 is arranged in the receiving groove 111 to allow the railing 3 to rotate into or out of the receiving groove 111. In this embodiment, five longitudinal bars 12 are provided. These five longitudinal bars 12 serve both to connect the crossbars 11 to form the frame 1 and to strengthen the structural strength.

[0033] It is known that by setting a receiving groove 111 on the crossbar 11, the railing 3 can be partially or completely embedded in the receiving groove 111 after being folded, which further reduces the storage volume. Secondly, it makes the upper surface of the folding rack tend to be horizontal after folding, which facilitates the stacking of the folding rack.

[0034] In a preferred embodiment, the first locking mechanism 4 includes a first fixed shaft 41, a first locking rod 42, a first locking tongue 43, and a first elastic member 44. The first locking rod 42 is fixedly connected to the railing 3; the first fixed shaft 41 is fixedly connected to the frame 1; the first locking tongue 43 is rotatably connected to the first fixed shaft 41 to lock the first fixed shaft 41 by rotation or to unlock it by rotation; the first end of the first elastic member 44 is connected to the first fixed shaft 41, and the second end of the first elastic member 44 is connected to the first locking tongue 43 to prevent the first locking tongue 43 from loosening when locked. It should be noted that the first elastic element 44 is a torsion spring, the first fixed shaft 41 is provided with an abutting boss, and the lock tongue is also provided with an abutting platform. The first end of the first elastic element 44 abuts against the abutting platform on the first fixed shaft 41, and the second end of the first elastic platform abuts against the abutting platform on the first lock tongue 43. Because the first fixed shaft 41 and the corresponding abutting platform are fixedly connected to the frame 1, the first lock tongue 43 and the abutting platform on the first lock tongue 43, under the action of the first elastic element 44, keep the first lock tongue 43 and the first lock rod 42 in a locked state or in an unlocked state, preventing external force interference from changing the locked state to an unlocked state.

[0035] It can be understood that during locking, the first locking tongue 43 hooks onto the first locking bar 42 to prevent the railing 3 from swinging in the first direction, and the first fixed shaft 41 abuts against the outer surface of the railing 3 to prevent the railing 3 from swinging in the second direction, thus achieving locking of the railing 3. When unlocking is required, the first locking tongue 43 is driven to rotate, causing the first locking tongue 43 to disengage from the first locking bar 42. At this time, the railing 3 can rotate in the first direction, and the railing 3 is unlocked.

[0036] In a preferred embodiment, a first guide slope 421 is provided on the first locking rod 42, and a second guide slope 431 is provided on the first locking tongue 43, with the first guide slope 421 and the second guide slope 431 being provided correspondingly.

[0037] It can be seen that, through the setting of the first and second guide surfaces, when changing the railing 3 from the unlocked state to the locked state, it is only necessary to rotate the railing 3 from the horizontal state to the vertical state. During the rotation, as the first locking bar 42 moves with the railing 3, the first guide slope 421 on the first locking bar 42 abuts against the second guide slope 431 on the first locking tongue 43, and drives the first locking tongue 43 to rotate. During the rotation of the first locking tongue 43, the first locking tongue 43 slides upward along the first guide slope 421 until the first locking tongue 43 and the first locking bar 42 are engaged, thus achieving locking. That is, when locking the railing 3, it is only necessary to drive the railing 3 to rotate to achieve locking, without the need to drive the first locking mechanism 4 to act separately, which is more convenient to operate and improves the efficiency of operators in opening the folding rack.

[0038] In a preferred embodiment, the first locking mechanism 4 further includes a pressing handle 45, which is fixedly connected to the first locking tongue 43 and extends in a direction away from the first locking tongue 43.

[0039] It can be seen that by setting up the handle 45, when it is necessary to unlock the railing 3, driving the handle 45 to rotate will cause the first locking tongue 43 to rotate, thereby disengaging the first locking tongue 43 from the first locking bar 42, thus unlocking the railing 3 and allowing it to fold smoothly. It should be noted that without the handle 45, the locking tongue needs to be manually driven to rotate, which is inconvenient. The handle 45, by rotating it during unlocking, makes the operation more convenient and efficient.

[0040] In a preferred embodiment, the system further includes a second locking mechanism 6 and a second hinge shaft 7. The support leg 2 is rotatably connected to the frame 1 via the second hinge shaft 7. The first end of the second locking mechanism 6 is connected to the frame 1, and the second end of the second locking mechanism 6 is connected to the support leg 2.

[0041] It is understood that the second locking mechanism 6 and the second hinge shaft 7 enable the support leg 2 to fold and lock, allowing the support leg 2 to rotate around the second hinge shaft 7 to fold. When it is necessary to unfold the support leg 2, rotating the support leg 2 changes it from a horizontally folded state to a vertically unfolded state. When the support leg 2 is in the unfolded state, the second locking mechanism 6 locks the support leg 2 to prevent it from deflecting under the action of external interference forces.

[0042] Specifically, the second locking mechanism 6 includes a second fixed shaft 61, a second locking rod 62, a second locking tongue 63, and a second elastic member 64. The second locking rod 62 is fixedly connected to the support leg 2, the second fixed shaft 61 is fixedly connected to the frame 1, the second locking tongue 63 is rotatably connected to the second fixed shaft 61, the first end of the second elastic member 64 is connected to the second fixed shaft 61, and the second end of the second elastic member 64 is connected to the second locking tongue 63 to prevent the second locking tongue 63 from loosening when locking.

[0043] It should be noted that the second locking mechanism 6 locks and unlocks the outrigger 2. The second elastic element 64 is also a torsion spring. The mechanism of the second locking mechanism 6 is basically the same as that of the first locking mechanism 4, and will not be described in detail here.

[0044] In a preferred embodiment, the system also includes a traveling mechanism 8, which comprises traveling wheels 81 and telescopic components 82. The fixed end of the telescopic component 82 is fixedly connected to the support leg 2 along the height direction, and the traveling wheel 81 is fixedly connected to the bottom of the telescopic end of the telescopic component 82. The telescopic components 82 and the support leg 2 are arranged in a one-to-one correspondence. It should be noted that the traveling wheel 81 is a swivel wheel, and the telescopic component 82 is a manual telescopic rod. The swivel wheel is fixedly connected to the extended end below the manual telescopic rod. When the manual telescopic rod is extended, the swivel wheel is supported on the ground, and the support leg 2 is in a suspended state, which can easily push the material rack to move. When it is necessary to stably support the material rack on the ground, the manual telescopic rod is retracted, and the swivel wheel moves upward and retracts accordingly until the wheel is completely suspended. All telescopic components 82 are driven in sequence to retract all the swivel wheels, so that the support leg 2 is stably supported on the ground.

[0045] In a preferred embodiment, four corner braces 9 are also included. One end of each corner brace 9 is detachably connected to the frame 1, and the second end is detachably connected to the support leg 2. It should be noted that the crossbar 11 is formed by welding two channel steels back-to-back, with the upward-facing opening of the channel steel forming a receiving groove 111. When the railing 3 is folded, it is embedded in the opening of the channel steel. The downward-facing channel steel is arranged downwards, and its downward-facing opening is used to embed the support leg 2 when folded. The support leg 2 is made of I-beams. One end of each corner brace 9 is detachably connected to the channel steel of the crossbar 11 by bolts, and the second end of each corner brace 9 is detachably connected to the support leg 2 by bolts. The telescopic assembly 82 is fixedly connected to the groove of the I-beam of the support leg 2.

[0046] It is known that the support leg 2 needs to bear a large load. Locking it alone through the second locking mechanism 6 results in low overall structural strength. By setting the corner brace 9, a triangular structure is formed between the support leg 2, the frame 1, and the corner brace 9, which strengthens the connection between the support leg 2 and the frame 1 and improves the stability of the folding rack.

[0047] In a preferred embodiment, the system also includes a material plate 10, which is fixedly connected to the frame 1 and forms a storage groove 101 between the material plate 10 and the frame 1. The material plate 10 is provided with a drainage hole 102.

[0048] It is known that all the corner braces 9 need to be removed during transportation. The removed corner braces 9 are placed in the storage tank 101 for storage, which facilitates transportation and prevents the corner braces 9 from being lost. The drainage hole 102 allows rainwater to pass through smoothly, preventing rainwater from accumulating in the storage tank 101 and causing corrosion to the material rack due to residual rainwater.

[0049] The working principle of this application is as follows:

[0050] When using the material rack, rotate the support leg 2 to unfold it. At this time, the second locking mechanism 6 works to lock the support leg 2. Open all the support legs 2 in sequence and support them on the ground. Install the corner braces 9 in sequence to reinforce the support legs 2. Rotate the railing 3 so that it rotates out of the storage slot 101 and rotates to a vertical position. At this time, the first locking mechanism 4 locks the railing 3, completing the unfolding of the folding material rack. At this time, a material stacking area is formed between the two rows of railings 3 above the frame 1. Materials can be easily stacked on the frame 1 and confined between the two rows of railings 3. When it is necessary to move the material rack a short distance, drive the telescopic component 82 to extend it, so that the casters support it on the ground. Push the folding material rack to move it a short distance. After moving it into position, drive the telescopic component 82 to retract it, so that the casters retract and the support legs 2 are stably supported on the ground again.

[0051] When long-distance movement is required, drive the pressing handle to rotate, which will cause the first locking tongue 43 to rotate, thereby unlocking the railing 3. Rotate the railing 3 so that it folds and embeds into the receiving groove 111. Remove the corner brace 9 and place it in the storage groove 101 for storage. Unlock the second locking mechanism 6 and rotate the support leg 2 so that the support leg 2 changes to a folded state. At this time, the folding rack changes from an unfolded state to a folded state, greatly reducing its volume and facilitating transportation.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A folding rack, characterized in that: It includes a frame (1), legs (2), railings (3) and a first locking mechanism (4), wherein the frame (1) is arranged in a rectangular shape; Four legs (2) are arranged, and the four legs (2) are respectively installed at the four corners of the bottom of the frame (1); It also includes a first hinge shaft (5), the railing (3) is rotatably connected to the frame (1) through the first hinge shaft (5), four railings (3) are arranged, the first hinge shaft (5) and the railing (3) are arranged one-to-one, two of the railings (3) are distributed at intervals on one long side of the frame (1), and the other two railings (3) are distributed at intervals on the opposite long side of the frame (1), and the first hinge shaft (5) is arranged perpendicular to the long side; Four first locking mechanisms (4) are arranged, and each first locking mechanism (4) is arranged in a one-to-one correspondence with the railing (3). The first end of each of the four first locking mechanisms (4) is connected to the frame (1), and the second end of each first locking mechanism (4) is connected to the corresponding railing (3).

2. A folding rack according to claim 1, characterized in that: The first locking mechanism (4) includes a first fixed shaft (41), a first locking rod (42), a first locking tongue (43) and a first elastic element (44), wherein the first locking rod (42) is fixedly connected to the railing (3); The first fixed shaft (41) is fixedly connected to the frame (1), and the first locking tongue (43) is rotatably connected to the first fixed shaft (41) to lock the first fixed shaft (41) by rotation or unlock it by rotation. The first end of the first elastic element (44) is connected to the first fixed shaft (41), and the second end of the first elastic element (44) is connected to the first locking tongue (43) to prevent the first locking tongue (43) from coming loose when locked.

3. A folding rack according to claim 2, characterized in that: The first locking bar (42) is provided with a first guide slope (421), and the first locking tongue (43) is provided with a second guide slope (431). The first guide slope (421) and the second guide slope (431) are provided correspondingly.

4. A folding rack according to claim 2, characterized in that: The first locking mechanism (4) further includes a pressing handle (45), which is fixedly connected to the first latch (43) and extends in a direction away from the first latch (43).

5. A folding rack according to any one of claims 1-4, characterized in that: It also includes a second locking mechanism (6) and a second hinge shaft (7). The support leg (2) is rotatably connected to the frame (1) via the second hinge shaft (7). The first end of the second locking mechanism (6) is connected to the frame (1), and the second end of the locking mechanism is connected to the support leg (2).

6. A folding rack according to claim 5, characterized in that: The second locking mechanism (6) includes a second fixed shaft (61), a second locking rod (62), a second locking tongue (63), and a second elastic element (64). The second locking rod (62) is fixedly connected to the support leg (2), the second fixed shaft (61) is fixedly connected to the frame (1), the second locking tongue (63) is rotatably connected to the second fixed shaft (61), the first end of the second elastic element (64) is connected to the second fixed shaft (61), and the second end of the second elastic element (64) is connected to the second locking tongue (63) to prevent the second locking tongue (63) from loosening when locked.

7. A folding rack according to claim 6, characterized in that: It also includes a walking mechanism (8), which includes a walking wheel (81) and a telescopic component (82). The fixed end of the telescopic component (82) is fixedly connected to the support leg (2) along the height direction, and the walking wheel (81) is fixedly connected to the bottom of the telescopic end of the telescopic component (82). The telescopic component (82) is arranged in a one-to-one correspondence with the support leg (2).

8. A folding rack according to any one of claims 1-4, characterized in that: The frame (1) includes crossbars (11) and longitudinal bars (12), with two crossbars (11) arranged parallel to each other; Multiple longitudinal bars (12) are arranged at intervals along the length of the transverse bar (11). All of the longitudinal bars (12) are arranged perpendicular to the transverse bar (11), and the two ends of each longitudinal bar (12) are fixedly connected to two transverse bars (11). A receiving groove (111) is provided on the crossbar (11), and the first hinge shaft (5) is arranged in the receiving groove (111) so that the railing (3) can rotate into or out of the receiving groove (111).

9. A folding rack according to claim 6, characterized in that: It also includes four corner braces (9), one end of which is detachably connected to the frame (1) and the second end of which is detachably connected to the support leg (2).

10. A folding rack according to claim 9, characterized in that: It also includes a material plate (10), which is fixedly connected to the frame (1), and a storage groove (101) is formed between the material plate (10) and the frame (1), and a drainage hole (102) is provided on the material plate (10).

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