Safe surrounding net easy to fold

Abstract

The utility model belongs to the technical field of safety fencing nets, and particularly relates to an easily-folded safety fencing net which comprises a fixing column, the fixing column is in a hollow cylindrical shape, a vertical rolling rod is rotationally arranged in the center of an inner cavity of the fixing column, and a fencing net body is arranged on a rod body of the rolling rod in a rolling mode. The rod body of the winding rod is fixed to the end, close to the center of the flat spiral spring, of the flat spiral spring. When the surrounding net body needs to be wound, two modes can be adopted, in the first mode, after the adjusting rod is detached, the speed reduction servo motor is started to drive the worm gear to rotate in the reverse direction, and therefore the winding rod slowly rotates in the reverse direction, and the surrounding net body is wound; according to the second mode, after the adjusting rod is detached, then the pull ring is pulled, the spline rod is pulled out of the spline groove, at the moment, the winding rod is not limited by the spline rod any more, the plane volute spring releases the torsion borne by the plane volute spring, and therefore the winding rod rotates reversely fast, the surrounding net body is wound, and a user selects the winding rod according to the requirement by himself / herself.

Description

Technical Field

[0001] This utility model relates to the field of safety fencing technology, specifically an easy-to-retract safety fencing. Background Technology

[0002] Currently, safety nets mainly consist of roll-type nets and fishing net-type nets made of materials such as nylon or plastic. They are used by suspending the safety nets on pre-installed net poles.

[0003] Traditional safety fencing is mostly rolled up manually by rotating a winding rod. Therefore, there is a need to develop an easy-to-roll safety fencing. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0006] An easy-to-retract safety fence, comprising:

[0007] A fixed post, which is a hollow cylinder, has a vertical winding rod rotatably mounted at the center of its inner cavity. A netting body is wound onto the winding rod. A planar spiral spring is fixed to one end of the winding rod near its center, and the other end of the planar spiral spring is fixed to the inner wall of the fixed post. Two planar spiral springs are provided, located above and below the netting body, respectively. The upper end of the winding rod rotatably passes through the top of the fixed post and has a vertical spline groove. One edge of the netting body is fixed to the winding rod, and the other end passes through the outer wall of the fixed post and is fixed to an adjusting rod.

[0008] A fixed frame, shaped like an inverted "L," is fixedly mounted on the top of a fixed column. Two horizontal first supports are fixedly mounted on the side wall of the fixed frame above the winding rod. A vertical spline sleeve is rotatably inserted between the two first supports via a bearing sleeve. The spline sleeve is located directly above the winding rod. A hollow worm gear is fixedly mounted on the outer side wall of the spline sleeve. A vertical pull rod is slidably inserted through the top wall of the fixed frame directly above the spline sleeve. A vertical spline rod is rotatably mounted at the lower end of the pull rod via a bearing seat. The spline rod is used to vertically engage with the spline sleeve and fit into / out of the spline groove. A geared servo motor is fixedly mounted on the top of the fixed column. The output shaft of the geared servo motor is fixedly connected to a worm gear that meshes with the worm gear via a coupling.

[0009] In a preferred embodiment of the easy-to-retract safety net described in this utility model, the lower end of the winding rod is rotatably mounted at the center of the bottom wall of the inner cavity of the fixed column via a bearing seat, and the upper end of the winding rod rotatably penetrates the center of the top wall of the fixed column via a bearing sleeve.

[0010] As a preferred embodiment of the easy-to-retract safety net described in this utility model, a handle is fixedly provided on the side of the adjusting rod away from the net body, and an anti-slip sleeve is fixedly fitted on the handle.

[0011] As a preferred embodiment of the easy-to-retract safety net described in this utility model, the bottom of both the adjusting rod and the fixing post is fixedly provided with a disc-shaped base, and the top of the base is provided with multiple vertical bolts arranged around its own center, the bolts being screwed through the base.

[0012] As a preferred embodiment of the easy-to-retract safety net described in this utility model, the lower end of the pull rod is fixedly provided with a fixing plate, the outer diameter of the fixing plate is larger than the outer diameter of the pull rod, a vertical spring is provided between the top of the fixing plate and the fixing frame, and a pull ring is provided at the top of the pull rod.

[0013] As a preferred embodiment of the easy-to-retract safety net described in this utility model, the top of the fixed post is fixedly provided with a second bracket for installing a worm gear, and the two ends of the worm gear are rotatably connected to the side wall of the second bracket through bearing sleeves.

[0014] The beneficial effects of this utility model are as follows: When it is necessary to retract the main body of the fence, two methods can be used: The first method is to first remove the adjusting rod, and then start the reduction servo motor to drive the worm gear to rotate in the opposite direction, so that the winding rod slowly rotates in the opposite direction to retract the main body of the fence; The second method is to first remove the adjusting rod, and then pull the pull ring to pull the spline rod out of the spline groove. At this time, the winding rod is no longer restricted by the spline rod, and the flat worm spring releases the torque it receives, so that the winding rod rotates in the opposite direction more quickly to retract the main body of the fence. Users can choose according to their needs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal components of the fixed column section of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the winding rod and the planar spiral spring of this utility model;

[0019] Figure 4 This utility model Figure 1 A schematic diagram of the structure during the tensioning of the middle spline rod;

[0020] Figure 5 This is an exploded view of some components of this utility model.

[0021] In the diagram: fixed post 100, winding rod 101, fence body 102, flat worm spring 103, spline groove 104, adjusting rod 105, handle 106, base 107, bolt 108, fixing frame 200, first bracket 201, spline sleeve 202, worm gear 203, pull rod 204, spline rod 205, reduction servo motor 206, worm 207, fixing plate 208, spring 209, pull ring 210, second bracket 211. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] Please see Figures 1-5 The diagram shown is a structural schematic of an embodiment of an easily retractable safety fence according to this utility model. Please refer to [link / reference]. Figures 1-5 This paper provides a detailed introduction to an easy-to-retract safety fence.

[0027] An easy-to-retract safety net includes a fixed post 100, which is a hollow cylinder. A vertical winding rod 101 is rotatably mounted at the center of the inner cavity of the fixed post 100. A net body 102 is wound onto the body of the winding rod 101. A planar spiral spring 103 is fixed to one end of the winding rod 101 near its center. The other end of the planar spiral spring 103 is fixed to the inner wall of the fixed post 100. Two planar spiral springs 103 are provided and are located at the upper and lower positions of the net body 102, respectively. The upper end of the winding rod 101 rotatably passes through the top of the fixed post 100 and has a vertical spline groove 104. One edge of the net body 102 is fixed to the body of the winding rod 101, and the other end passes through the outer wall of the fixed post 100 and is fixed to an adjusting rod 105.

[0028] A fixing frame 200 is fixedly mounted on the top of the fixing column 100 in an inverted "L" shape. Two horizontal first supports 201 are fixedly mounted on the side wall of the fixing frame 200 above the winding rod 101. A vertical spline sleeve 202 is rotatably connected between the two first supports 201 via a bearing sleeve. The spline sleeve 202 is located directly above the winding rod 101. A hollow worm gear 203 is fixedly mounted on the outer side wall of the spline sleeve 202. A vertical pull rod 204 is slidably connected through the top wall of the fixing frame 200 directly above the spline sleeve 202. A vertical spline rod 205 is rotatably mounted at the lower end via a bearing seat. The spline rod 205 is used to vertically fit the through spline sleeve 202 and fit into / out of the spline groove 104. A reduction servo motor 206 is fixedly mounted on the top of the fixed column 100. The output shaft of the reduction servo motor 206 is fixedly connected to a worm 207 that meshes with the worm wheel 203 via a coupling. The lead angle of the worm 207 is smaller than the equivalent friction angle between the meshing teeth of the pull rod 204, which can achieve reverse self-locking, that is, only the worm 207 can drive the worm wheel 203, and the worm wheel 203 cannot drive the worm 207.

[0029] Wherein: the lower end of the winding rod 101 is rotatably mounted at the center of the bottom wall of the inner cavity of the fixed column 100 through a bearing seat, and the upper end of the winding rod 101 rotatably penetrates the center of the top wall of the fixed column 100 through a bearing sleeve. The bearing seat and bearing sleeve reduce the friction when the winding rod 101 rotates.

[0030] Wherein: A handle 106 is fixedly provided on the side of the adjusting rod 105 away from the fence body 102, and an anti-slip sleeve is fixedly provided on the handle 106, so that the adjusting rod 105 can be held easily by the handle 106;

[0031] Wherein: the bottom of the adjusting rod 105 and the fixing column 100 are both fixedly provided with a disc-shaped base 107, and the top of the base 107 is provided with a plurality of vertical bolts 108 arranged around its own center. The bolts 108 are screwed through the base 107 and can be fixed in the desired position.

[0032] Wherein: a fixing plate 208 is fixedly installed at the lower end of the pull rod 204, the outer diameter of the fixing plate 208 is larger than the outer diameter of the pull rod 204, a vertical spring 209 is provided between the top of the fixing plate 208 and the fixing frame 200, and a pull ring 210 is provided at the top of the pull rod 204, through which the pull rod 204 can be pulled up;

[0033] Wherein: the top of the fixed column 100 is fixedly provided with a second bracket 211 for installing the worm 207, and the two ends of the worm 207 are rotatably connected to the side wall of the second bracket 211 through bearing sleeves. The second bracket 211 is used to support the worm 207.

[0034] In practical use, after fixing the fixed post 100, when the fence body 102 is needed, the reduction servo motor 206 is started to drive the worm 207 to rotate. Since the worm 207 and worm wheel 203 are reduction mechanisms, and the reduction servo motor 206 can control the number of rotations and direction of its output, the worm wheel 203 will only slowly drive the spline rod 205 and the winding rod 101 to rotate, so that the winding rod 101 is gradually sent out of the fence body 102. At this time, the planar worm spring 103 is also gradually subjected to torque. The worm 207 and worm wheel 203 have self-locking properties, that is, only the worm 207 can drive the worm wheel 203, and the worm wheel 203 cannot drive the worm 207. Therefore, the planar worm spring 103 cannot pull the winding rod 101 to rotate in the opposite direction. Then, the adjusting rod 105 is fixed in other positions, and a vertical rod can be additionally fixed. After the fence body 102 is wrapped around the vertical rod, the fence body 102 can form an angled area.

[0035] When it is necessary to retract the main body of the fencing 102, two methods can be used:

[0036] In the first method, after disassembling the adjusting rod 105, the reduction servo motor 206 is started to drive the worm gear 203 to rotate in the opposite direction, thereby causing the winding rod 101 to rotate slowly in the opposite direction and winding up the fence body 102.

[0037] The second method involves first disassembling the adjusting rod 105, then pulling the pull ring 210 to pull the spline rod 205 out of the spline groove 104. At this point, the winding rod 101 is no longer restricted by the spline rod 205, and the flat spiral spring 103 releases the torque it receives, thereby causing the winding rod 101 to rotate in the opposite direction more quickly, winding up the fence body 102. Users can choose according to their needs.

[0038] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A collapsible security screen comprising, The utility model relates to a kind of fixed column and fixed frame, including: Fixed column (100), the fixed column (100) is hollow cylindrical, and the inner cavity center of the fixed column (100) is vertically arranged with vertical winding rod (101), winding is arranged with surrounding net body (102) on the rod body of winding rod (101), one end of the plane volute spring (103) close to itself center is fixed on the rod body of winding rod (101), the other end of the plane volute spring (103) is fixed on the inner side wall of fixed column (100), the plane volute spring (103) is provided with two and is located in surrounding net body (102) upper and lower position respectively, the upper end of winding rod (101) is vertically penetrated the top of fixed column (100) and is opened with vertical spline groove (104), one side edge of surrounding net body (102) is fixed on the rod body of winding rod (101), the other end is penetrated the outer side wall of fixed column (100) and is fixed on adjusting rod (105); Fixed frame (200), fixedly set in the top of fixed column (100) is inverted "L", the side wall of fixed frame (200) is fixedly set with two transverse first support (201) above winding rod (101), two first support (201) are vertically penetrated and are arranged with vertical spline sleeve (202) by bearing sleeve, spline sleeve (202) is located directly above winding rod (101), the outer side wall of spline sleeve (202) is fixedly provided with hollow worm wheel (203), the top wall of fixed frame (200) is vertically penetrated and is arranged with vertical pull rod (204) above spline sleeve (202), the lower end of pull rod (204) is rotatably arranged with vertical spline rod (205) by bearing seat, spline rod (205) is used for vertically fitting and penetrating spline sleeve (202) and fitting insertion / withdrawal spline groove (104), the top of fixed column (100) is fixedly provided with speed reducer servo motor (206), the output shaft of speed reducer servo motor (206) is fixedly connected with worm (207) engaged transmission of worm wheel (203) by shaft coupling.

2. A self-retracting safety lanyard according to claim 1, wherein: The lower end of winding rod (101) is rotatably arranged at the inner cavity bottom wall center of fixed column (100) by bearing seat, and the upper end of winding rod (101) is rotatably penetrated the top wall center of fixed column (100) by bearing sleeve.

3. A self-retracting safety lanyard according to claim 1, wherein: The side of adjusting rod (105) away from surrounding net body (102) is fixedly provided with handle (106), and the handle (106) is fixedly sleeved with anti-skid sleeve.

4. The easy-to-retrieve safety net according to claim 1, wherein: The bottom of adjusting rod (105) and fixed column (100) is fixedly provided with disc-shaped base (107), and the top of base (107) is circumferentially provided with a plurality of vertical bolts (108) with itself center as center, and the bolt (108) is screwed and penetrated base (107).

5. The easy-to-retrieve safety net according to claim 1, wherein: The lower end of the pull rod (204) is fixedly provided with a fixed plate (208), the outer diameter of the fixed plate (208) is larger than that of the pull rod (204), a vertical spring (209) is arranged between the top of the fixed plate (208) and the fixed frame (200), and the top of the pull rod (204) is provided with a pull ring (210).

6. A self-retracting safety lanyard according to claim 1, wherein: The top of the fixed column (100) is fixedly provided with a second support (211) for mounting a worm (207), and the rod body of the worm (207) is rotationally connected with the side wall of the second support (211) through a bearing sleeve.

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