Portable folding frame and installation protective device

Abstract

This disclosure provides a portable folding frame and a protective mounting device. The portable folding frame includes a first protective frame, a second protective frame, and a first folding rod, with the first and second protective frames arranged parallel to each other. The first protective frame includes a first main frame, a first crossbar, a second main frame, and a second crossbar sequentially rotatably connected end-to-end. The first protective frame also includes a first side lock movably mounted on the second main frame. The second protective frame includes a third main frame, a third crossbar, a fourth main frame, and a fourth crossbar sequentially rotatably connected end-to-end. The portable folding frame also includes a second folding rod, one end of which is rotatably connected to one of the fourth main frame and the second main frame, and the other end of which is slidably connected to the other of the fourth main frame and the second main frame. The portable folding frame described above offers good convenience during use, storage, carrying, or transportation.

Description

Technical Field

[0001] This disclosure relates to the technical field of installation protection, and in particular to a portable folding frame and installation protection device. Background Technology

[0002] In high-altitude operations, construction workers need to use protective netting operating platforms to carry out their work. However, different sizes of protective netting operating platforms need to be customized for different height positions, resulting in poor adaptability.

[0003] Existing technologies such as CN216921282U propose a folding protective device in which a positioning component passes through a first positioning hole and is connected to a second protective frame. By adjusting the contact position between the positioning component and the second protective frame, the distance between the hook component and the base plate can be easily changed, thereby facilitating the adjustment of the gap between the top of the hanging body and the mounting carrier, and thus facilitating the adjustment of the construction height, effectively improving the adaptability of the folding protective device.

[0004] However, there is still considerable room for improvement in terms of the ease of storage, carrying, or transportation of folding protective devices. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a portable folding rack and installation protection device that facilitates storage, carrying or transportation.

[0006] The purpose of this disclosure is achieved through the following technical solution: A portable folding frame includes a first protective frame, a second protective frame, and a first folding rod, wherein the first protective frame and the second protective frame are arranged parallel to each other; The first protective frame includes a first main frame, a first crossbar, a second main frame, and a second crossbar that are rotatably connected end to end in sequence. The first protective frame also includes a first side lock, which is movably disposed on the second main frame. The second protective frame includes a third main frame, a third crossbar, a fourth main frame, and a fourth crossbar that are rotatably connected end to end in sequence; One end of the first folding rod is rotatably connected to the first main frame, and the other end of the first folding rod is slidably connected to the third main frame; The portable folding frame also includes a second folding rod, one end of which is rotatably connected to one of the fourth main frame and the second main frame, and the other end of which is slidably connected to the other of the fourth main frame and the second main frame; The second folding rod has a first side lock hole on the side adjacent to the first side lock. The first side lock is used to lock into the first side lock hole when the end of the second folding rod moves to a predetermined position relative to the second main frame.

[0007] In one embodiment, the first protective frame further includes a first guide sleeve assembly and a front folding rod, the first guide sleeve assembly being slidably sleeved on the first main frame, and the two ends of the front folding rod being rotatably connected to the first guide sleeve assembly and the first crossbar, respectively.

[0008] In one embodiment, the first guide sleeve assembly includes a first guide sleeve and a first spring locking pin. The first guide sleeve is slidably sleeved on the first main frame, and the first spring locking pin is disposed on the first guide sleeve. The first main frame has a first locking hole, and the first spring locking pin is used to lock into the first locking hole when the first guide sleeve slides relative to the first main frame to a first height position; and / or The first side lock is a mechanical handle. The second main frame has two fixed lugs arranged side by side. The first side lock slides through the two fixed lugs respectively. The first side lock is manually locked into or slid out of the first side lock hole. The second main frame also has a limiting lug. When the first side lock is locked into the first side lock hole, it is locked into the limiting lug.

[0009] In one embodiment, a first sliding groove is provided on the side of the first folding rod adjacent to the third main frame, and a first guide post protrudes from the third main frame, the first guide post being slidably connected to the first sliding groove; or, The second main frame has a second sliding groove on one side adjacent to the second folding rod, and the second folding rod has a second guide post protruding from it, with the second guide post slidably connected to the second sliding groove.

[0010] In one embodiment, a first groove is formed on the side of the first folding rod adjacent to the third main frame, and a first guide post protrudes from the third main frame, the first guide post being slidably connected to the first groove; a second groove is formed on the side of the second main frame adjacent to the second folding rod, and a second guide post protrudes from the second folding rod, the second guide post being slidably connected to the second groove; the extending direction of the first groove and the extending direction of the second groove have a preset angle; and / or, The second main frame includes a second main frame body and a second slide bar. The second slide bar is fixed to the second main frame body, and the end of the second folding rod is slidably connected to the second slide bar. The first side lock is slidably disposed on the second main frame body. The first main frame, the first crossbar, the second main frame body, and the second crossbar are sequentially hinged end to end; and / or, The portable folding frame further includes a third folding rod, which is arranged parallel to the first folding rod. One end of the third folding rod is rotatably connected to the second main frame, and the other end is slidably connected to the fourth main frame; and / or The portable folding frame further includes a fourth folding rod and a second side lock; the fourth folding rod is arranged parallel to the second folding rod, one end of the fourth folding rod is rotatably connected to the third main frame, and the other end of the fourth folding rod is slidably connected to the first main frame; the second side lock is movably disposed on the first main frame, and a second side lock hole is provided on the side of the fourth folding rod adjacent to the second side lock, the second side lock being used to lock into the second side lock hole when the end of the fourth folding rod slides relative to the first main frame to a predetermined position; and / or The portable folding frame further includes two support roller groups. Each support roller group includes a support sleeve, a support locking pin, and a support roller. The support locking pin is disposed on the support sleeve, and the support roller is rotatably connected to the support sleeve. The support sleeves of the two support roller groups are slidably disposed on the third main frame and the fourth main frame, respectively. The third main frame has a plurality of spaced-apart first vertical locking holes along its axial direction. The support locking pin of one of the support roller groups is used to lock into one of the first vertical locking holes when the support sleeve slides relative to the third main frame to a first engagement position. The fourth main frame has a plurality of spaced-apart second vertical locking holes along its axial direction. The support locking pin of the other support roller group is used to lock into one of the second vertical locking holes when the support sleeve slides relative to the fourth main frame to a second engagement position; and / or, The portable folding frame further includes a first side pivot rod and a second side pivot rod; the two ends of the first side pivot rod are respectively rotatably connected to the first main frame and the third main frame; the two ends of the second side pivot rod are respectively rotatably connected to the second main frame and the fourth main frame.

[0011] In one embodiment, the second protective frame further includes a second guide sleeve assembly and a rear folding rod, the second guide sleeve assembly being slidably sleeved on the third main frame, and the two ends of the rear folding rod being rotatably connected to the second guide sleeve assembly and the third crossbar, respectively.

[0012] In one embodiment, the second guide sleeve assembly includes a second guide sleeve and a second spring locking pin. The second guide sleeve is slidably sleeved on the third main frame, and the second spring locking pin is disposed on the second guide sleeve. The third main frame has a second locking hole, and the second spring locking pin is used to lock into the second locking hole when the second guide sleeve slides relative to the third main frame to a second height position.

[0013] In one embodiment, the portable folding frame further includes two hook assemblies. Each hook assembly includes a hook sleeve, a limiting locking pin, a sleeve base, and a hook. The limiting locking pin is movably disposed on the hook sleeve, the sleeve base is fixedly connected to the hook sleeve, and the hook is rotatably sleeved on the sleeve base. The angle between the hook and the sleeve base is adjustable. The hook sleeves of the two hook assemblies are slidably sleeved on the third main frame and the fourth main frame, respectively. The third main frame has a plurality of spaced third vertical locking holes along the axial direction. When the hook sleeve of one hook assembly slides relative to the third main frame to the third sleeve position, it locks into one of the third vertical locking holes. The fourth main frame has a plurality of spaced fourth vertical locking holes along the axial direction. When the hook sleeve of the other hook assembly slides relative to the fourth main frame to the fourth sleeve position, it locks into the other fourth vertical locking hole.

[0014] In one embodiment, each hook assembly further includes a helical spring disposed between the hook and the sleeve, one end of the helical spring abutting against the hook and the other end of the helical spring being fixedly connected to the sleeve, so that the hook is elastically slidably connected to the sleeve; the outer wall of the sleeve is provided with at least two limiting holes along the circumferential direction, and the outer wall of the hook is movably provided with an elastic post, the elastic post being elastically limited within one of the limiting holes.

[0015] An installation protection device includes a support tray and a portable folding frame as described in any of the above embodiments; The support tray is placed on the first and third crossbars; or, the support tray is placed on the second and fourth crossbars.

[0016] Compared with the prior art, this disclosure has at least the following advantages: In the aforementioned portable folding frame, the first protective frame and the second protective frame are arranged parallel to each other. Since the first main frame, the first crossbar, the second main frame and the second crossbar are connected end to end in sequence, the connection points of the first main frame, the first crossbar, the second main frame and the second crossbar can be rotated, making it easy to fold the first protective frame for storage or unfold it for use; similarly, the second protective frame can be easily folded for storage or unfolded for use. 2) Since one end of the first folding rod is rotatably connected to the first main frame and the other end of the first folding rod is slidably connected to the third main frame, one end of the second folding rod is rotatably connected to one of the fourth main frame and the second main frame, and the other end of the second folding rod is slidably connected to the other of the fourth main frame and the second main frame, and the first side lock is movably set on the second main frame, and the second folding rod has a first side lock hole on the side adjacent to the first side lock, when the end of the second folding rod moves relative to the second main frame to a predetermined position, the first side lock locks into the first side lock hole. When storing, carrying or transporting the portable folding frame, first remove the support tray, then let the first side lock slide away from the first side lock hole, and then let the second folding rod move relative to the fourth main frame and the second main frame respectively, so that the first main frame and the third main frame can fold and approach each other through the first folding rod, and at the same time let the second main frame and the fourth main frame fold and approach each other through the second folding rod, and both the first protective frame and the second protective frame are folded and stored, reducing the space occupied by the portable folding frame during storage, carrying or transportation. Conversely, when using the portable folding frame, first unfold both the first and second protective frames, and then open the first main frame and the third main frame together via the first folding rod, while simultaneously opening the second main frame and the fourth main frame together via the second folding rod, until the end of the second folding rod moves to a predetermined position relative to the second main frame. Then, lock the first side lock into the first side lock hole to prevent the second folding rod from moving relative to the fourth main frame and the second main frame respectively, so that the first main frame and the third main frame are reliably opened together via the first folding rod, and the second main frame and the fourth main frame are reliably opened together via the second folding rod. Then, place the support tray on the first and third crossbars; or, place the support tray on the second and fourth crossbars. The portable folding frame described above is convenient to use, store, carry, or transport. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an embodiment of an installation protection device; Figure 2 for Figure 1 A schematic diagram of a portable folding frame with protective devices installed; Figure 3 for Figure 2 A partial schematic diagram of the portable folding frame shown; Figure 4 for Figure 2 Another partial schematic diagram showing the installation of the protective device; Figure 5 for Figure 2 A partial cross-sectional view of the protective device being installed. Detailed Implementation

[0019] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure 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.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 3 As shown, the installation protection device 10 of one embodiment of the present invention includes a support tray 100 and a portable folding frame 200. When in use, the support tray 100 is placed on the portable folding frame 200 so that the user can stand on the support tray 100 to use it. Conversely, when not in use, such as when storing, carrying or transporting, the support tray 100 is taken out of the portable folding frame 200 and then the portable folding frame 200 is folded so that the portable folding frame 200 can be stored, carried or transported.

[0023] See also Figures 1 to 3In one embodiment, the portable folding frame 200 includes a first protective frame 210, a second protective frame 220, and a first folding rod 230, with the first protective frame 210 and the second protective frame 220 arranged parallel to each other; the first protective frame 210 includes a first main frame 212, a first crossbar 213, a second main frame 214, and a second crossbar 215 connected in sequence by rotation from end to end, and the first protective frame 210 also includes a first side lock 216, which is movably disposed on the second main frame 214; the second protective frame 220 includes a third main frame 222, a third crossbar 223, a fourth main frame 224, and a fourth crossbar 225 connected in sequence by rotation from end to end; One end of the first folding rod 230 is rotatably connected to the first main frame 212, and the other end of the first folding rod 230 is slidably connected to the third main frame 222; the portable folding frame 200 also includes a second folding rod 240, one end of the second folding rod 240 is rotatably connected to one of the fourth main frame 224 and the second main frame 214, and the other end of the second folding rod 240 is slidably connected to the other of the fourth main frame 224 and the second main frame 214. Figure 1 As shown, in this embodiment, one end of the second folding rod 240 is rotatably connected to the fourth main frame 224, and the other end of the second folding rod 240 is slidably connected to the second main frame 214. It can be understood that in other embodiments, one end of the second folding rod 240 may also be rotatably connected to the second main frame 214, and the other end of the second folding rod 240 may be slidably connected to the fourth main frame 224.

[0024] like Figure 3 As shown, a first side lock hole 242 is provided on the side of the second folding rod 240 adjacent to the first side lock 216. The first side lock 216 is used to lock into the first side lock hole 242 when the end of the second folding rod 240 moves to a predetermined position relative to the second main frame 214. That is, when using the portable folding frame 200, the end of the second folding rod 240 moves to a predetermined position relative to the second main frame 214, and the first side lock 216 locks into the first side lock hole 242. Specifically, in this embodiment, the end of the second folding rod 240 slides to a predetermined position relative to the second main frame 214, and the first side lock 216 locks into the first side lock hole 242.

[0025] It is understood that, during use, the support tray 100 is placed on the first crossbar 213 and the third crossbar 223; or, the support tray 100 is placed on the second crossbar 215 and the fourth crossbar 225. The user can adjust the placement position of the support tray 100 as needed, which improves the ease of use of the portable folding frame 200.

[0026] The aforementioned protective device 10 and its portable folding frame 200, with the first protective frame 210 and the second protective frame 220 arranged parallel to each other, allow the first main frame 212, the first crossbar 213, the second main frame 214, and the second crossbar 215 to be rotatably connected end to end, making the connection points of the first main frame 212, the first crossbar 213, the second main frame 214, and the second crossbar 215 rotatable, thus facilitating the folding and storage or unfolding for use of the first protective frame 210; similarly, the second protective frame 220 can be easily folded and stored or unfolded for use. Since one end of the first folding rod 230 is rotatably connected to the first main frame 212, and the other end of the first folding rod 230 is slidably connected to the third main frame 222, one end of the second folding rod 240 is rotatably connected to one of the fourth main frame 224 and the second main frame 214, and the other end of the second folding rod 240 is slidably connected to the other of the fourth main frame 224 and the second main frame 214, and the first side lock 216 is movably disposed on the second main frame 214, and a first side lock hole 242 is provided on the side of the second folding rod 240 adjacent to the first side lock 216, the first side lock 216 locks into the second main frame 214 when the end of the second folding rod 240 moves to a predetermined position relative to the second main frame 214. When storing, carrying, or transporting the portable folding frame 200, first remove the support tray 100, then slide the first side lock 216 out of the first side lock hole 242, and then allow the second folding rod 240 to move relative to the fourth main frame 224 and the second main frame 214 respectively, so that the first main frame 212 and the third main frame 222 can be folded together by the first folding rod 230, and at the same time, the second main frame 214 and the fourth main frame 224 can be folded together by the second folding rod 240, and the first protective frame 210 and the second protective frame 220 can be folded and stored, reducing the space occupied by the portable folding frame 200 during storage, carrying, or transportation. Conversely, when using the portable folding frame 200, first unfold both the first protective frame 210 and the second protective frame 220, and then open the first main frame 212 and the third main frame 222 together via the first folding rod 230, while simultaneously opening the second main frame 214 and the fourth main frame 224 together via the second folding rod 240, until the end of the second folding rod 240 moves to a predetermined position relative to the second main frame 214. Then, lock the first side lock 216 into the first side lock hole 242 to prevent the second folding rod 240 from moving relative to the fourth main frame 224. 4. The second main frame 214 is moved so that the first main frame 212 and the third main frame 222 are reliably opened apart by the first folding rod 230, and the second main frame 214 and the fourth main frame 224 are reliably opened apart by the second folding rod 240. Then the support tray 100 is placed on the first crossbar 213 and the third crossbar 223; or, the support tray 100 is placed on the second crossbar 215 and the fourth crossbar 225. The portable folding frame 200 described above has good convenience in use, storage, carrying or transportation.

[0027] like Figure 1 As shown, in one embodiment, the first protective frame 210 further includes a first guide sleeve assembly 217 and a front folding rod 218. The first guide sleeve assembly 217 is slidably sleeved on the first main frame 212. The two ends of the front folding rod 218 are rotatably connected to the first guide sleeve assembly 217 and the first crossbar 213, respectively. This not only improves the support strength of the first protective frame 210 but also does not affect the folding requirements of the first protective frame 210. In this embodiment, the sliding connection position between the first guide sleeve assembly 217 and the first main frame 212 is adjustable to meet the switching requirements between the folded and open states of the first main frame 212 and the first crossbar 213. The two ends of the front folding rod 218 are hinged to the first guide sleeve assembly 217 and the first crossbar 213, respectively. And / or, like Figure 2 and Figure 3 As shown, in one embodiment, the first side lock 216 is a mechanical handle. The second main frame 214 has two parallel fixed lugs 214a. The first side lock 216 slides through the two fixed lugs respectively. The first side lock 216 is manually locked into or slid out of the first side lock hole 242. The second main frame 214 also has a limiting lug 214b. When the first side lock 216 is locked into the first side lock hole 242, it engages with the limiting lug, so that the first side lock 216 is reliably locked into the first side lock hole 242. Figure 3 As shown. It can be understood that in other embodiments, the first side lock 216 can also be other mechanical locks, for example, the first side lock 216 is a stud, the first side lock hole is a screw hole, and the first side lock 216 is screwed into or separated from the first side lock hole.

[0028] like Figure 1 and Figure 2As shown, in one embodiment, the first guide sleeve assembly 217 includes a first guide sleeve 2172 and a first spring locking pin 2174. The first guide sleeve 2172 is slidably sleeved on the first main frame 212, and the first spring locking pin 2174 is disposed on the first guide sleeve 2172. The first main frame 212 has a first locking hole 2122. The first spring locking pin 2174 is used to lock into the first locking hole 2122 when the first guide sleeve 2172 slides relative to the first main frame 212 to a first height position, so as to prevent the first guide sleeve 2172 from sliding relative to the first main frame 212, so that the first guide sleeve 2172 and the first main frame 212 are locked by the first spring locking pin 2174, ensuring that the first protective frame 210 can be reliably opened. At this time, the front folding rod 218 effectively supports and limits the first main frame 212 and the first crossbar 213, improving the support strength of the first protective frame 210. It is understood that when folding the first protective frame 210, the first spring locking pin 2174 can be pulled out of the first locking hole 2122 and rotated 90°, so that the first guide sleeve 2172 slides relative to the first main frame 212, thereby achieving the folding requirement of the first protective frame 210. It should be noted that the structure and mechanical principle of the first spring locking pin 2174 are existing technologies and will not be described in detail here.

[0029] See again Figure 1 In one embodiment, the first folding rod 230 has a first sliding groove 231 on the side adjacent to the third main frame 222, and the third main frame 222 has a protruding first guide post (not shown). The first guide post is slidably connected to the first sliding groove 231, so that the first folding rod 230 and the third main frame 222 are slidably connected. In other embodiments, the positions of the first guide post and the first sliding groove 231 can be interchanged.

[0030] See again Figure 1 In one embodiment, a second groove 2142 is provided on the side of the second main frame 214 adjacent to the second folding rod 240, and a second guide post (not shown) protrudes from the second folding rod 240. The second guide post is slidably connected to the second groove 2142, so that the second folding rod 240 and the second main frame 214 are slidably connected. It can be understood that in other embodiments, the positions of the second groove 2142 and the second guide post can be interchanged.

[0031] See again Figure 1In one embodiment, the first folding rod 230 has a first sliding groove 231 on the side adjacent to the third main frame 222, and the third main frame 222 has a protruding first guide post (not shown). The first guide post is slidably connected to the first sliding groove 231, so that the first folding rod 230 and the third main frame 222 are slidably connected. The second main frame 214 has a second sliding groove 2142 on the side adjacent to the second folding rod 240, and the second folding rod 240 has a protruding second guide post (not shown). The second guide post is slidably connected to the second sliding groove 2142, so that the second main frame 214 and the second folding rod 240 are slidably connected. The extension direction of the first sliding groove 231 and the extension direction of the second sliding groove 2142 have a preset angle, so that the first folding rod 230 and the second folding rod 240 are more flexible during folding; and / or, See again Figure 1 and Figure 2 In one embodiment, the second main frame 214 includes a second main frame body 214a and a second slide bar 214b. The second slide bar 214b is fixed to the second main frame body 214a, and the end of the second folding rod 240 is slidably connected to the second slide bar 214b, so that the second folding rod 240 is slidably connected to the second main frame 214. A first side lock 216 is slidably disposed on the second main frame body 214a, so that the first side lock 216 is movably disposed on the second main frame 214. The first main frame 212, the first crossbar 213, the second main frame body 214a, and the second crossbar 215 are sequentially hinged end to end, so that the first main frame 212, the first crossbar 213, the second main frame 214, and the second crossbar 215 are sequentially rotatably connected end to end. In this embodiment, the second slide bar 214b is welded to the second main frame body 214a. And / or, See again Figure 1 In one embodiment, the portable folding frame 200 further includes a third folding rod 250, which is arranged parallel to the first folding rod 230. One end of the third folding rod 250 is rotatably connected to the second main frame 214, and the other end is slidably connected to the fourth main frame 224, thereby providing better stability of the portable folding frame 200 during use. See also... Figure 4 In this embodiment, a third sliding groove 252 is provided on the side of the third folding rod 250 adjacent to the second main frame 214, and a third guide post (not shown) protrudes from the second main frame 214. The third guide post is slidably connected to the third sliding groove 252, so that the third folding rod 250 is slidably connected to the second main frame 214. And / or, See again Figure 1 and Figure 2In one embodiment, the portable folding frame 200 further includes a fourth folding rod 260 and a second side lock 270; the fourth folding rod 260 is arranged parallel to the second folding rod 240, one end of the fourth folding rod 260 is rotatably connected to the third main frame 222, and the other end of the fourth folding rod 260 is slidably connected to the first main frame 212; the second side lock 270 is movably disposed on the first main frame 212, and a second side lock hole 262 is provided on the side of the fourth folding rod 260 adjacent to the second side lock 270, the second side lock 270 being used to lock the end of the fourth folding rod 260 relative to the third main frame 222. When the main frame 212 slides to a predetermined position, it locks into the second side lock hole. That is, when using the portable folding frame 200, the end of the fourth folding rod 260 slides relative to the first main frame 212 to the predetermined position, and the second side lock 270 locks into the second side lock hole. This further reliably opens the first main frame 212 and the third main frame 222 through the first folding rod 230, and simultaneously reliably opens the second main frame 214 and the fourth main frame 224 through the second folding rod 240. When folding the portable folding frame 200, the second side lock 270 can slide out of the second side lock hole. It should be noted that the structure of the second side lock 270 and the way it locks into the second side lock hole are the same as the first side lock, and will not be described again here. And / or, See again Figure 1 and Figure 2 In one embodiment, the portable folding frame 200 further includes two support roller groups 280. Each support roller group 280 includes a support sleeve 282, a support locking pin 284, and a support roller 286. The support locking pin 284 is disposed on the support sleeve 282, and the support roller 286 is rotatably connected to the support sleeve 282. The support sleeves 282 of the two support roller groups 280 are slidably disposed on the third main frame 222 and the fourth main frame 224, respectively. The third main frame 222 has a plurality of spaced first vertical locking holes 2223 along the axial direction. The support locking pin of one of the support roller groups 280 is located in the support sleeve 282. Pin 284 is used to lock into one of the first vertical locking holes when the support sleeve 282 slides relative to the third main frame 222 to the first engagement position, so as to adjust the relative connection position between the support roller group 280 and the third main frame 222; the fourth main frame 224 has a plurality of spaced second vertical locking holes 2243 along the axial direction, and the support locking pin 284 of the other support roller group 280 is used to lock into one of the second vertical locking holes when the support sleeve 282 slides relative to the fourth main frame 224 to the second engagement position, so as to adjust the relative connection position between the support roller group 280 and the fourth main frame 224. By designing two support roller groups 280, the lateral movement of the portable folding frame 200 is more convenient during use. In this embodiment, the support locking pin 284 is a spring locking pin, and the structure and mechanical principle of the support locking pin 284 are prior art and will not be described in detail here.

[0032] See again Figure 1 and Figure 2In this embodiment, the third main frame 222, the third crossbar 223, the fourth main frame 224 and the fourth crossbar 225 are hinged end to end in sequence, so that the third main frame 222, the third crossbar 223, the fourth main frame 224 and the fourth crossbar 225 are rotatably connected end to end in sequence.

[0033] See again Figure 1 and Figure 2 In one embodiment, the second protective frame 220 further includes a second guide sleeve assembly 226 and a rear folding rod 227. The second guide sleeve assembly 226 is slidably sleeved on the third main frame 222. The two ends of the rear folding rod 227 are rotatably connected to the second guide sleeve assembly 226 and the third crossbar 223, respectively. This not only improves the support strength of the second protective frame 220 but also does not affect the folding requirements of the second protective frame 220. In this embodiment, the sliding connection position between the second guide sleeve assembly 226 and the third main frame 222 is adjustable to meet the switching requirements between the folded and open states of the third main frame 222 and the third crossbar 223. The two ends of the rear folding rod 227 are hinged to the second guide sleeve assembly 226 and the third crossbar 223, respectively.

[0034] See again Figure 1 and Figure 2 In one embodiment, the second guide sleeve assembly 226 includes a second guide sleeve 2262 and a second spring locking pin 2264. The second guide sleeve 2262 is slidably sleeved on the third main frame 222, and the second spring locking pin 2264 is disposed on the second guide sleeve 2262. The third main frame 222 has a second locking hole 2222. The second spring locking pin 2264 is used to lock into the second locking hole 2222 when the second guide sleeve 2262 slides relative to the third main frame 222 to a second height position, so as to prevent the second guide sleeve 2262 from sliding relative to the third main frame 222. The second guide sleeve 2262 and the third main frame 222 are locked by the second spring locking pin 2264, ensuring that the second protective frame 220 can be reliably opened. At this time, the rear folding rod 227 effectively supports and limits the third main frame 222 and the third crossbar 223, improving the support strength of the second protective frame 220.

[0035] See again Figure 1 and Figure 2 In one embodiment, the portable folding frame 200 further includes two hook assemblies 290. Each hook assembly 290 includes a hook sleeve 292, a limiting locking pin 294, a sleeve base 296, and a hook 298. The limiting locking pin 294 is movably disposed on the hook sleeve 292, and the sleeve base 296 is fixedly connected to the hook sleeve 292. See also... Figure 5Hook 298 is rotatably sleeved on sleeve 296, and the angle between hook 298 and sleeve 296 is adjustable; hook sleeves 292 of two hook assemblies 290 are slidably sleeved on the third main frame 222 and the fourth main frame 224 respectively; the third main frame 222 has a plurality of spaced third vertical locking holes (not shown in the figure) along the axial direction, when the hook sleeve 292 of one hook assembly 290 slides relative to the third main frame 222 to the third sleeve position, it locks into one of the third vertical locking holes, so that the hook sleeve 292 of one hook assembly 290 is fixedly connected to the third main frame 222; the fourth main frame 224 has a plurality of spaced fourth vertical locking holes 2245 along the axial direction, and the hook sleeve 292 of the other hook assembly 290... 2. When the fourth main frame 224 slides to the fourth socket position, another fourth vertical locking hole is engaged, fixing the hook sleeve 292 of the other hook assembly 290 to the fourth main frame 224. Since the connection positions of the hook sleeves 292 of the two hook assemblies 290 to the corresponding main frames are fixed and limited by the corresponding limiting pins 294, when it is necessary to adjust the position of the hook sleeve 292 of the hook assembly 290, the user only needs to pull out the corresponding limiting pin 294 and rotate it 90°, and then adjust the connection position of the hook sleeve 292 with the corresponding main frame. This allows the connection position of the hook sleeve 292 with the corresponding main frame to be adjusted according to actual needs, further improving the adaptability of the portable folding frame 200. Moreover, when folding the portable folding frame 200, since the hook 298 rotates and is sleeved on the socket 296, and the angle between the hook 298 and the socket 296 is adjustable, the hook 298 can be adjusted to multiple different adaptive angles relative to the socket 296. It should be noted that the limit locking pin 294 is a spring locking pin. The structure and mechanical principle of the limit locking pin 294 are existing technologies and will not be elaborated here.

[0036] like Figure 2 and Figure 5As shown, each hook assembly 290 further includes a helical spring 299. One end of the helical spring 299 is sleeved on the hook 298, and the other end of the helical spring 299 is fixed to the inner wall of the sleeve 296, so that the hook 298 is elastically slidably connected to the sleeve 296. A limiting post 2982 is protruding from the outer peripheral wall of the hook 298, and at least two limiting holes 2962 are opened circumferentially on the outer wall of the sleeve 296. When it is necessary to adjust the angle of the hook 298 relative to the sleeve 296, the hook 298 is first pressed, so that the limiting post of the hook 298 leaves the current limiting hole, and at the same time, the hook 298 drives the helical spring 299 to stretch and deform. Then, the hook 298 is rotated relative to the sleeve 296 to a predetermined angle and the hook 298 is released. Under the elastic force of the helical spring 299, the hook 298 moves relative to the sleeve 296 until the limiting post of the hook 298 slides into the new limiting hole, thus completing the angle adjustment of the hook 298 relative to the sleeve 296. In this embodiment, the limiting post 2982 is provided on the outer peripheral wall of the bottom end of the hook 298, and each limiting hole is opened at the bottom end of the sleeve 296.

[0037] It is understood that in other embodiments, the limiting post 2982 is not limited to being located on the outer peripheral wall at the bottom end of the hook 298. For example, the limiting post 2982 is located in the middle position of the hook 298, and the limiting post 2982 is an elastic telescopic post. When it is necessary to adjust the angle of the hook 298 relative to the sleeve 296, the limiting post 2982 can be pressed at the same time as the hook 298, so that the limiting post 2982 retracts into the hook and leaves the current limiting hole, while the hook 298 drives the helical spring 299 to stretch and deform; then the hook 298 is rotated relative to the sleeve 296 to a predetermined angle and the hook 298 is released. Under the elastic force of the helical spring 299, the hook 298 moves relative to the sleeve 296 until the limiting post of the hook 298 slides into the position corresponding to the new limiting hole. At this point, the limiting post of the hook 298 automatically pops out and is limited in the limiting hole, completing the angle adjustment of the hook 298 relative to the sleeve 296.

[0038] like Figure 2As shown, in one embodiment, the portable folding frame 200 further includes a first side pivot rod 310 and a second side pivot rod 320; the two ends of the first side pivot rod 310 are rotatably connected to the first main frame 212 and the third main frame 222, respectively; the two ends of the second side pivot rod 320 are rotatably connected to the second main frame 214 and the fourth main frame 224, respectively; when opened for use, the first side pivot rod 310 is preferably supported between the first main frame 212 and the third main frame 222, and the second side pivot rod 320 is preferably supported between the second main frame 214 and the fourth main frame 224, supporting the tray 100. Simultaneously placed on the first crossbar 213, the first side pivot bar 310, the third crossbar 223, and the second side pivot bar 320, that is, the first crossbar 213, the first side pivot bar 310, the third crossbar 223, and the second side pivot bar 320 together support the support tray 100; when folded, the two ends of the first side pivot bar 310 rotate relative to the first main frame 212 and the third main frame 222, respectively, and the two ends of the second side pivot bar 320 rotate relative to the second main frame 214 and the fourth main frame 224, respectively, reducing the space occupied by the portable folding frame 200 during storage, carrying, or transportation.

[0039] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A portable folding frame, comprising a first protective frame, a second protective frame, and a first folding rod, wherein the first protective frame and the second protective frame are arranged parallel to each other; characterized in that, The first protective frame includes a first main frame, a first crossbar, a second main frame, and a second crossbar that are rotatably connected end to end in sequence. The first protective frame also includes a first side lock, which is movably disposed on the second main frame. The second protective frame includes a third main frame, a third crossbar, a fourth main frame, and a fourth crossbar that are rotatably connected end to end in sequence; One end of the first folding rod is rotatably connected to the first main frame, and the other end of the first folding rod is slidably connected to the third main frame; The portable folding frame also includes a second folding rod; one end of the second folding rod is rotatably connected to one of the fourth main frame and the second main frame, and the other end of the second folding rod is slidably connected to the other of the fourth main frame and the second main frame; The second folding rod has a first side lock hole on the side adjacent to the first side lock. The first side lock is used to lock into the first side lock hole when the end of the second folding rod moves to a predetermined position relative to the second main frame.

2. The portable folding frame according to claim 1, characterized in that, The first protective frame also includes a first guide sleeve assembly and a front folding rod. The first guide sleeve assembly is slidably sleeved on the first main frame, and the two ends of the front folding rod are respectively rotatably connected to the first guide sleeve assembly and the first crossbar.

3. The portable folding frame according to claim 2, characterized in that, The first guide sleeve assembly includes a first guide sleeve and a first spring locking pin. The first guide sleeve is slidably sleeved on the first main frame, and the first spring locking pin is disposed on the first guide sleeve. The first main frame has a first locking hole, and the first spring locking pin is used to lock into the first locking hole when the first guide sleeve slides relative to the first main frame to a first height position; and / or The first side lock is a mechanical handle. The second main frame has two fixed lugs arranged side by side. The first side lock slides through the two fixed lugs respectively. The first side lock is manually locked into or slid out of the first side lock hole. The second main frame also has a limiting lug. When the first side lock is locked into the first side lock hole, it is locked into the limiting lug.

4. The portable folding frame according to claim 1, characterized in that, The first folding rod has a first sliding groove on one side adjacent to the third main frame, and the third main frame has a first guide post protruding from it, the first guide post being slidably connected to the first sliding groove; or, The second main frame has a second sliding groove on one side adjacent to the second folding rod, and the second folding rod has a second guide post protruding from it, with the second guide post slidably connected to the second sliding groove.

5. The portable folding frame according to claim 1, characterized in that, The first folding rod has a first sliding groove on its side adjacent to the third main frame, and the third main frame has a protruding first guide post, which is slidably connected to the first sliding groove; the second main frame has a second sliding groove on its side adjacent to the second folding rod, and the second folding rod has a protruding second guide post, which is slidably connected to the second sliding groove; the extending direction of the first sliding groove and the extending direction of the second sliding groove have a preset angle; and / or, The second main frame includes a second main frame body and a second slide bar. The second slide bar is fixed to the second main frame body, and the end of the second folding rod is slidably connected to the second slide bar. The first side lock is slidably disposed on the second main frame body. The first main frame, the first crossbar, the second main frame body, and the second crossbar are sequentially hinged end to end; and / or, The portable folding frame further includes a third folding rod, which is arranged parallel to the first folding rod. One end of the third folding rod is rotatably connected to the second main frame, and the other end is slidably connected to the fourth main frame; and / or The portable folding frame also includes a fourth folding rod and a second side lock; The fourth folding rod is arranged parallel to the second folding rod. One end of the fourth folding rod is rotatably connected to the third main frame, and the other end is slidably connected to the first main frame. The second side lock is movably disposed on the first main frame. A second side lock hole is provided on the side of the fourth folding rod adjacent to the second side lock. The second side lock is used to lock into the second side lock hole when the end of the fourth folding rod slides relative to the first main frame to a predetermined position; and / or The portable folding frame further includes two support roller groups. Each support roller group includes a support sleeve, a support locking pin, and a support roller. The support locking pin is disposed on the support sleeve, and the support roller is rotatably connected to the support sleeve. The support sleeves of the two support roller groups are slidably disposed on the third main frame and the fourth main frame, respectively. The third main frame has a plurality of spaced-apart first vertical locking holes along its axial direction. The support locking pin of one of the support roller groups is used to lock into one of the first vertical locking holes when the support sleeve slides relative to the third main frame to a first engagement position. The fourth main frame has a plurality of spaced-apart second vertical locking holes along its axial direction. The support locking pin of the other support roller group is used to lock into one of the second vertical locking holes when the support sleeve slides relative to the fourth main frame to a second engagement position; and / or, The portable folding frame further includes a first side pivot rod and a second side pivot rod; the two ends of the first side pivot rod are respectively rotatably connected to the first main frame and the third main frame; the two ends of the second side pivot rod are respectively rotatably connected to the second main frame and the fourth main frame.

6. The portable folding frame according to claim 1, characterized in that, The second protective frame also includes a second guide sleeve assembly and a rear folding rod. The second guide sleeve assembly is slidably sleeved on the third main frame, and the two ends of the rear folding rod are rotatably connected to the second guide sleeve assembly and the third crossbar, respectively.

7. The portable folding frame according to claim 6, characterized in that, The second guide sleeve assembly includes a second guide sleeve and a second spring locking pin. The second guide sleeve is slidably sleeved on the third main frame, and the second spring locking pin is disposed on the second guide sleeve. The third main frame has a second locking hole, and the second spring locking pin is used to lock into the second locking hole when the second guide sleeve slides relative to the third main frame to a second height position.

8. The portable folding frame according to claim 1, characterized in that, The portable folding frame also includes two hook assemblies. Each hook assembly includes a hook sleeve, a limiting lock pin, a sleeve base, and a hook. The limiting lock pin is movably disposed on the hook sleeve, the sleeve base is fixedly connected to the hook sleeve, and the hook is rotatably sleeved on the sleeve base. The angle between the hook and the sleeve base is adjustable. The hook sleeves of the two hook assemblies are slidably sleeved on the third main frame and the fourth main frame, respectively. The third main frame has multiple spaced third vertical locking holes along the axial direction. When the hook sleeve of one hook assembly slides relative to the third main frame to the third sleeve position, it locks into one of the third vertical locking holes. The fourth main frame has multiple spaced fourth vertical locking holes along the axial direction. When the hook sleeve of another hook assembly slides relative to the fourth main frame to the fourth sleeve position, it locks into another fourth vertical locking hole.

9. The portable folding frame according to claim 8, characterized in that, Each hook assembly further includes a helical spring disposed between the hook and the sleeve, one end of the helical spring abutting against the hook, and the other end of the helical spring being fixedly connected to the sleeve, so that the hook is elastically slidably connected to the sleeve; the outer wall of the sleeve is provided with at least two limiting holes along the circumferential direction, and the outer wall of the hook is provided with an elastic post that is movably protruding, the elastic post being elastically limited within one of the limiting holes.

10. A protective device for installation, characterized in that, Includes a support tray and a portable folding frame as described in any one of claims 1 to 9; The support tray is placed on the first and third crossbars; or, the support tray is placed on the second and fourth crossbars.

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