Tension spring tensioning device and lifting door

Abstract

The utility model provides a tension spring tensioning device and a lifting door, and relates to the technical field of doors, the tension spring tensioning device comprises a tension spring part and a tensioning adjusting part, the tensioning adjusting part comprises a first connecting plate, a tensioning adjusting assembly and a locking assembly, and the first connecting plate is connected with the first end of the tension spring part and the tensioning adjusting assembly; the locking assembly is connected with the first connecting plate and the tensioning adjusting assembly, and the locking assembly is suitable for being switched between an opening state and a locking state; in the open state, the tension adjusting assembly can adjust the tension degree of the tension spring component; in the locking state, the locking assembly locks the tensioning adjusting assembly. In the opening state, the tensioning degree of the tension spring component can be adjusted through the tensioning adjusting assembly, and in the locking state, the tensioning adjusting assembly is locked through the locking assembly, and the tensioning degree of the tension spring component is prevented from being changed. Compared with a tension spring tensioning device in the prior art, the tension adjusting mode of the tension spring component is effectively simplified, and the tension spring tensioning device has the advantages of being simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of doors, in particular to a tension spring tensioning device and a lifting door. Background Art

[0002] The common tension spring tensioning device for the current fast lifting door on the market is to fix the two ends of the tension spring with the adapter, and then adjust the Japanese buckle and the belt rope to pre-tighten the tension spring. Since the tension spring needs to be adjusted after being used for a period of time, the above structure has the problem of not being easy to adjust the tension of the tension spring. Utility Model Content

[0003] The utility model provides a tensioning device for a tension spring, which is used to solve the problem in the prior art that it is difficult to adjust the tension of the tension spring.

[0004] The utility model provides a tension spring tensioning device, comprising:

[0005] Extension spring components;

[0006] The tensioning adjustment component includes a first connecting plate, a tensioning adjustment component and a locking component, wherein the first connecting plate is connected to the first end of the tension spring component and the tensioning adjustment component, and the tensioning adjustment component is connected to a flexible connecting member; the locking component is connected to the first connecting plate and the tensioning adjustment component, and the locking component is suitable for switching between an open state and a locked state; in the open state, the tensioning adjustment component adjusts the tension of the tension spring component by adjusting the length of the flexible connecting member; in the locked state, the locking component locks the tensioning adjustment component.

[0007] According to a tension spring tensioning device provided in an embodiment of the utility model, the tensioning adjustment assembly comprises:

[0008] a base, the base being connected to the first connecting plate;

[0009] A ratchet shaft is rotatably disposed on the base, and the flexible connecting member is wound around the outer circumference of the ratchet shaft;

[0010] A ratchet is connected to the ratchet shaft, and the ratchet is connected to the locking assembly. In the open state, the ratchet can rotate relative to the locking assembly; in the locked state, the locking assembly locks the ratchet.

[0011] According to a tension spring tensioning device provided in an embodiment of the utility model, the locking assembly comprises:

[0012] A pawl, the pawl is rotatably connected to the base and meshes with the ratchet wheel;

[0013] An elastic member, wherein a first end of the elastic member is connected to the base, and a second end of the elastic member is connected to the pawl;

[0014] In the open state, the pawl can rotate relative to the base, and the ratchet can rotate relative to the pawl; in the locked state, the pawl is fixed to the base by a screw to lock the ratchet.

[0015] According to a tension spring tensioning device provided by an embodiment of the utility model, a first connecting portion is provided on a side of the base close to the tension spring component, a strip-shaped through hole is provided on a side of the first connecting plate close to the base, and the first connecting portion is inserted into the strip-shaped through hole and can swing in the strip-shaped through hole.

[0016] According to a tension spring tensioning device provided by an embodiment of the utility model, the first connecting portion is a concave structure.

[0017] According to a tension spring tensioning device provided in an embodiment of the utility model, the strip-shaped through hole includes a strip-shaped through hole body and a limiting groove, the limiting groove is located on the side of the strip-shaped through hole body close to the base, and the limiting groove is connected to the strip-shaped through hole body; the first connecting part is located in the limiting groove, and the width of the limiting groove is smaller than the width of the strip-shaped through hole body.

[0018] According to a tension spring tensioning device provided by an embodiment of the utility model, a first hook is provided on the side of the first connecting plate away from the base, and the first end of the tension spring component is hooked with the first hook, or a first through hole is provided on the side of the first connecting plate away from the base, and the first end of the tension spring component is connected to the first through hole through a spring buckle.

[0019] According to an embodiment of the utility model, a tension spring tensioning device is provided, which also includes:

[0020] A connecting component, comprising a bottom plate and a second connecting plate connected to the bottom plate;

[0021] A second hook is provided on one side of the second connecting plate close to the tension spring component, and the second end of the tension spring component is hooked to the second hook; at least one of the first connecting plate and the second connecting plate is provided with a limiting piece, and the limiting piece is used to limit the tension spring component;

[0022] or,

[0023] A second through hole is provided on one side of the second connecting plate close to the tension spring component, and the second end of the tension spring component is connected to the second through hole via a spring buckle.

[0024] According to a tension spring tensioning device provided by an embodiment of the utility model, a guide shaft is arranged on the base, and the ratchet pawl is connected to the guide shaft.

[0025] According to an embodiment of the utility model, a tension spring tensioning device is provided, which also includes:

[0026] The guide sleeve is provided with a plurality of guide channels, the tension spring component comprises a plurality of tension springs, the tension springs are respectively passed through the guide channels, and the guide sleeve is provided with a second connecting portion.

[0027] The utility model also provides a lifting door, comprising a door body and any one of the tension spring tensioning devices described above, wherein the tension spring tensioning device is connected to the door body.

[0028] The tension spring tensioning device provided in the embodiment of the utility model can adjust the tension of the tension spring component through the tension adjusting component when in the open state, and the locking component locks the tension adjusting component when in the locked state to prevent the tension of the tension spring component from changing. Compared with the tension spring tensioning device in the related art, the tension spring tensioning device of the utility model can effectively simplify the tensioning adjustment method of the tension spring component, and has the advantages of simple structure and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the main structure of a tension spring tensioning device provided by an embodiment of the utility model;

[0031] Figure 2 It is a side structural schematic diagram of a tension spring tensioning device provided by an embodiment of the utility model;

[0032] Figure 3 It is a three-dimensional structural schematic diagram of a tension spring tensioning device provided by an embodiment of the utility model;

[0033] Figure 4 This is one of the structural schematic diagrams of the tension adjustment component provided by the embodiment of the utility model;

[0034] Figure 5 It is a structural schematic diagram of a first connecting plate provided in an embodiment of the utility model;

[0035] Figure 6This is the second structural schematic diagram of the tension adjustment component provided by the embodiment of the utility model;

[0036] Figure 7 It is a schematic diagram of the main structure of the spring buckle provided by the embodiment of the utility model;

[0037] Figure 8 It is a structural schematic diagram of the assembly relationship between the tension spring component and the guide sleeve provided in an embodiment of the utility model;

[0038] Fig. 9 It is a schematic diagram of the main structure of a tension spring tensioning device provided by another embodiment of the utility model;

[0039] Fig.10 It is a side structural schematic diagram of a tension spring tensioning device provided by another embodiment of the utility model;

[0040] Fig.11 It is a three-dimensional structural schematic diagram of a tension spring tensioning device provided in another embodiment of the utility model.

[0041] Reference numerals:

[0042] 100. Extension spring components;

[0043] 200, tensioning adjustment component; 210, first connecting plate; 211, strip through hole body; 220, tensioning adjustment assembly; 221, base; 222, ratchet shaft; 223, ratchet; 224, first connecting part; 225, strip through hole; 226, limiting groove; 227, first hook; 228, first through hole; 229, spring buckle; 230, locking assembly; 231, pawl; 232, elastic member; 233, side wall; 234, middle connecting plate; 235, side plate; 236, inner concave surface; 300, connecting component; 310, bottom plate; 320, second connecting plate; 321, second hook; 322, second through hole; 330, limiting piece; 340, guide shaft; 341, screw; 400, guide sleeve; 410, second connecting part; 500, flexible connecting member. DETAILED DESCRIPTION

[0044] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0045] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0047] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] Combine the following Figure 1-Figure 11 The tension spring tensioning device of the embodiment of the utility model is described.

[0050] like Figures 1 to 3 As shown, the tension spring tensioning device includes a tension spring component 100 and a tensioning adjustment component 200, and the tensioning adjustment component 200 includes a first connecting plate 210, a tensioning adjustment assembly 220 and a locking assembly 230. The first connecting plate 210 is connected to the first end of the tension spring component 100 and the tensioning adjustment assembly 220, and the tensioning adjustment assembly 220 is connected to the flexible connector 500; the locking assembly 230 is connected to the first connecting plate 210 and the tensioning adjustment assembly 220, and the locking assembly 230 is suitable for switching between an open state and a locked state; in the open state, the tensioning adjustment assembly 220 adjusts the tension of the tension spring component 100 by adjusting the length of the flexible connector 500; in the locked state, the locking assembly 230 locks the tensioning adjustment assembly 220.

[0051] The tension spring tensioning device provided in the embodiment of the utility model can adjust the tension of the tension spring component 100 through the tension adjustment component 220 when in the open state, and the locking component 230 locks the tension adjustment component 220 when in the locked state to prevent the tension of the tension spring component 100 from changing. Compared with the tension spring tensioning device in the related art, the tension spring tensioning device of the utility model can effectively simplify the tension adjustment method of the tension spring component 100, and has the advantages of simple structure and easy use.

[0052] In one embodiment of the present invention, Figure 3 to Figure 4 As shown, the tension adjustment assembly 220 includes a base 221, a ratchet shaft 222 and a ratchet 223. The base 221 is connected to the first connecting plate 210. Specifically, the base 221 is sleeved and connected to the first connecting plate 210, or can be connected by a spring buckle 229 or a buckle and a tongue. The ratchet shaft 222 is rotatably arranged on the base 221. The ratchet shaft 222 is provided with an open groove, which extends along the length direction of the ratchet shaft 222. The flexible connector 500 passes through the open groove and is wound around the outer periphery of the ratchet shaft 222. In this embodiment, the flexible connector 500 is a belt rope. Of course, the flexible connector 500 can also be a wire rope, a belt or other connectors.

[0053] Further, the base 221 includes two side walls 233, the two side walls 233 are parallel and spaced apart, and the ratchet shaft 222 is rotatably disposed between the two side walls 233. The width between the two side walls 233 of the base 221 is slightly greater than or equal to the width of the flexible connector 500, so that the two side walls 233 of the base 221 can limit the flexible connector 500 and prevent the flexible connector 500 and the base 221 from moving relative to each other.

[0054] The ratchet 223 is connected to the ratchet shaft 222. Specifically, at least one of the two side walls 233 of the base 221 is provided with a mounting through hole. One end of the ratchet shaft 222 is rotatably matched with the mounting through hole and extends to the outside of the base 221. The ratchet 223 is sleeved on one end of the ratchet shaft 222 or is welded or integrally formed with one end of the ratchet shaft 222. The ratchet 223 is connected to the locking assembly 230. In the open state, the ratchet 223 can rotate relative to the locking assembly 230. At this time, the locking assembly 230 releases the locking of the ratchet 223. The ratchet 223 is rotated to adjust the tension of the tension spring component 100 by adjusting the length of the flexible connector 500. In order to facilitate the rotation of the ratchet 223, a hexagonal hole is provided on the ratchet 223. When the tension of the tension spring component 100 needs to be adjusted, it is only necessary to insert a hexagonal wrench into the hexagonal hole and rotate the hexagonal wrench. Of course, the hexagonal hole on the ratchet 223 can also be replaced with a non-standard opening, such as a cross, plum blossom, square, etc., to prevent non-professionals from misoperating and causing safety accidents.

[0055] In the locked state, the locking assembly 230 locks the ratchet 223 , and at this time, the ratchet 223 cannot rotate, which can effectively prevent the ratchet shaft 222 from rotating, causing the tension of the tension spring component 100 to change.

[0056] In one embodiment of the present invention, Figure 3 to Figure 4 As shown, the locking assembly 230 includes a pawl 231 and an elastic member 232. The pawl 231 is rotatably connected to the base 221. Specifically, a guide shaft 340 is provided on the base 221. The guide shaft 340 is located between the two side walls 233. One end of the guide shaft 340 is rotatably connected to one side wall 233, and the other end of the guide shaft 340 is rotatably connected to the other side wall 233. The pawl 231 is connected to the other end of the guide shaft 340 through a screw 341. Specifically, the other end of the guide shaft 340 is provided with an internal thread, and the screw 341 is threadedly matched with the other end of the guide shaft 340. Further, in order to prevent the screw 341 from loosening, a gasket is provided on the screw 341, and the pawl 231 is meshed with the ratchet 223. In the locked state, the screw 341 is in a tightened state, and the pawl 231 cannot rotate relative to the base 221, thereby locking the ratchet 223. The first end of the elastic member 232 is connected to the base 221, and the second end of the elastic member 232 is connected to the pawl 231. In this embodiment, the elastic member 232 is a tension spring, and a first connecting hole is provided on the base 221. The first end of the tension spring is hung on the first connecting hole. The pawl 231 is provided with a second connecting hole, and the second end of the tension spring is connected to the second connecting hole.

[0057] Of course, the specific structural type of the elastic member 232 is not limited thereto, and may also be a compression spring or a V-shaped spring. In the open state, the pawl 231 can rotate relative to the base 221, thereby enabling the ratchet 223 to rotate relative to the pawl 231; in the locked state, the pawl 231 is fixed to the base 221 by the screw 341, and the pawl 231 locks the ratchet 223.

[0058] In one embodiment of the utility model, the locking assembly 230 includes a pressing rod (not shown) and a compression spring (not shown), the base 221 is provided with a mounting hole, the pressing rod is movably provided in the mounting hole, the compression spring is sleeved on the outer periphery of the pressing rod, one end of the compression spring abuts against the base 221, and the other end of the compression spring abuts against one end of the pressing rod. The pawl 231 is provided with a locking hole, in the locked state, the other end of the pressing rod extends from the mounting hole and is inserted into the locking hole, thereby locking the ratchet 223; in the open state, the other end of the pressing rod retracts into the mounting hole and is separated from the locking hole.

[0059] In one embodiment of the present invention, Figure 3 , Figure 4 He Ru Figure 6 As shown, a first connecting portion 224 is provided on one side of the base 221 close to the tension spring component 100. The first connecting portion 224 is a bent sheet structure. In this embodiment, the base 221 includes two connecting pieces, which are arranged at intervals. The two ends of the ratchet shaft 222 are respectively rotatably matched with the two connecting pieces. The two connecting pieces are connected to the two ends of the first connecting portion 224 in a one-to-one correspondence. In this embodiment, the two connecting pieces are integrally formed with the first connecting portion 224 to reduce the number of components. Of course, the connection method of the connecting piece and the first connecting portion 224 is not limited to this, and a welding or clamping connection method can also be adopted.

[0060] A strip-shaped through hole 225 is provided on one side of the first connecting plate 210 close to the base 221, and the first connecting portion 224 is inserted into the strip-shaped through hole 225 and can swing in the strip-shaped through hole 225. The first connecting portion is a concave structure. For example, the cross section of the first connecting portion 224 can be U-shaped, V-shaped or C-shaped. Specifically, the first connecting portion 224 includes an intermediate connecting plate 234 and two side plates 235, the intermediate connecting plate 234 is inserted into the strip-shaped through hole 225, the two side plates 235 are connected to the two side edges of the intermediate connecting plate 234 in a one-to-one correspondence, the width of the intermediate connecting plate 234 is the same as the width of the two side plates 235, and the intermediate connecting plate 234 is integrally formed or welded with the two side plates 235. The two side plates 235 are respectively located on both sides of the first connecting plate 210; the two side plates 235 are bent toward the side of the middle connecting plate 234 away from the tension spring component 100 to form an inner concave surface 236 on the side of the first connecting portion 224 away from the tension spring component 100. The inner concave surface 236 can be provided so that the first connecting portion 224 can swing in the bar-shaped through hole 225. Preferably, the cross section of the first connecting portion 224 is U-shaped, that is, the middle connecting plate 234 and the two side plates 235 form a U-shaped inner concave structure. Since the cross section of the first connecting portion 224 is U-shaped, the first connecting plate 210 can be movably connected to the base 221, so that the tension spring tensioning device can adaptively adjust the angle when installed eccentrically, and the tension spring tensioning device can replace the first hooks 227 of different specifications to meet the use requirements of different products.

[0061] like Figure 6 As shown, one side wall 233 is connected to one side plate 235 , and the other side wall 233 is connected to the other side plate 235 . The side wall 233 and the side plate 235 are welded or integrally formed.

[0062] In one embodiment of the present invention, Figures 4 to 5As shown, the strip-shaped through hole 225 includes a strip-shaped through hole body 211 and a limiting groove 226, the limiting groove 226 is located at the side of the strip-shaped through hole body 211 close to the base 221, and the limiting groove 226 is connected to the strip-shaped through hole body 211; the first connecting portion 224 is located in the limiting groove 226, and the width of the limiting groove 226 is less than the width of the strip-shaped through hole body 211. Preferably, the width of the limiting groove 226 is slightly greater than or equal to the width of the first connecting portion 224, and the width of the strip-shaped through hole body 211 is greater than the width of the limiting groove, that is, the width of the strip-shaped through hole body 211 is greater than the width of the first connecting portion 224, so as to facilitate the installation and removal of the first connecting plate 210 and the base 221. Since the width of the limiting groove 226 is smaller than the width of the strip through hole body 211, after the first connecting part 224 is inserted into the limiting groove 226, the limiting groove 226 can limit the first connecting part 224, thereby preventing the first connecting part 224 from moving relative to the first connecting plate 210 along the length direction of the strip through hole 225, thereby causing the tension spring tensioning device to swing, thereby improving the stability of the tension spring tensioning device.

[0063] In one embodiment of the present invention, Figure 5 As shown, a first hook 227 is provided on one side of the first connecting plate 210 away from the base 221, and the first end of the tension spring component 100 is hooked to the first hook 227. Specifically, a plurality of first hooks 227 are provided, and the plurality of first hooks 227 are arranged at intervals along the length direction of the first connecting plate 210. The number of first hooks 227 is the same as the number of tension springs, and the first ends of the tension springs are hooked to the first hooks 227 in a one-to-one correspondence. In this embodiment, four first hooks 227 are provided, and the hooking directions of two first hooks 227 are different from the hooking directions of the other two first hooks 227, such as Figure 1 As shown, the two first hooks 227 on the left side are arranged to the left, and the two first hooks 227 on the right side are arranged to the right. With such a hanging method, even if the tension spring on one side falls off due to external force, the tension spring on the other side will not fall off.

[0064] Furthermore, in order to prevent the first hook 227 from falling off, the width of the hook opening is equal to the outer diameter of the tension spring ring, and the ring can move inside the hook. Since the size of the hook opening is small, the tension spring can be prevented from falling off.

[0065] In one embodiment of the present invention, Figure 8 As shown, the tension spring tensioning device also includes a connecting component 300, which includes a base plate 310 and a second connecting plate 320 connected to the base plate 310, the second connecting plate 320 is arranged at an interval with the first connecting plate 210, and the tension spring component 100 is located between the second connecting plate 320 and the first connecting plate 210.

[0066] A second hook 321 is provided on one side of the second connecting plate 320 close to the tension spring component 100, and the second end of the tension spring component 100 is hooked to the second hook 321. Specifically, a plurality of second hooks 321 are provided, and the plurality of second hooks 321 are arranged at intervals along the length direction of the second connecting plate 320. The number of second hooks 321 is the same as the number of tension springs, and the second ends of the tension springs are hooked to the second hooks 321 in a one-to-one correspondence. In this embodiment, four second hooks 321 are provided, and the hooking directions of the two first hooks 227 are different from the hooking directions of the other two second hooks 321. Figure 1 As shown, the two second hooks 321 on the left side are arranged to face left, and the two second hooks 321 on the right side are arranged to face right.

[0067] Furthermore, if Figure 3 As shown, since the first hook 227 and the second hook 321 are both open hooks, the tension spring component 100 is easily separated from the first hook 227 or the second hook 321 after being acted upon by an external force. Therefore, in order to prevent the tension spring component 100 from falling off, at least one of the first connecting plate 210 and the second connecting plate 320 is provided with a limiting piece 330, and the limiting piece 330 is used to limit the tension spring component 100. The limiting piece 330 is a sheet-like structure, and the limiting piece 330 is arranged on one side of the first hook 227 or the second hook 321. The limiting piece 330 blocks the opening of the first hook 227 or the opening of the second hook 321 to prevent the tension spring component 100 from falling off from the hook. The limiting piece 330 is detachably connected to the first hook 227 or the second hook 321 to facilitate the removal and installation of the hook. Specifically, the limiting piece 330 is connected to the first hook 227 or the second hook 321 through a screw. Of course, a detachable connection can also be achieved through the cooperation of a buckle and a tongue.

[0068] In one embodiment of the present invention, Figure 4 As shown, the flexible connector 500 abuts against the guide shaft 340 , and the guide shaft 340 is used to guide the flexible connector 500 to change the direction of the flexible connector 500 .

[0069] In one embodiment of the present invention, Figure 3As shown, the tension spring tensioning device also includes a guide sleeve 400, which is provided with a plurality of guide channels, which are arranged in parallel and at intervals, and the guide channels are adapted to the size of the tension springs. The tension spring component 100 includes a plurality of tension springs, which are arranged in a one-to-one correspondence in the guide channels. The tension spring can directly pass through the guide channel during installation and disassembly, without the need to additionally disassemble other structures, thereby reducing the installation and maintenance costs. Furthermore, the guide sleeve 400 is provided with a second connecting portion 410, which is used to connect to the door body. The second connecting portion 410 and the guide sleeve 400 are integrally formed. The one-piece design simplifies the structure of the guide sleeve 400, reduces the use of parts, and can be compatible with multiple door bodies at the same time.

[0070] In another embodiment of the utility model, the structure of the tension spring component 100, the tension adjustment assembly 220 and the locking assembly 230 in this embodiment is the same as that in the above-mentioned embodiment, except that the first end of the tension spring component 100 in this embodiment is connected to the first connecting plate 210 through a spring buckle 229.

[0071] like Figure 7 as well as Figures 9 to 11 As shown, a first through hole 228 is provided on one side of the first connecting plate 210 away from the base 221, and the first end of the tension spring component 100 is connected to the first through hole 228 via a spring buckle 229. Specifically, a plurality of first through holes 228 are provided, and the plurality of first through holes 228 are arranged at intervals along the length direction of the first connecting plate 210. The number of the first through holes 228 is the same as the number of the tension springs, and the first end of the tension spring is connected to the first through holes 228 in a one-to-one correspondence via the spring buckle 229. By using the spring buckle 229 to connect the first connecting plate 210 and the tension spring, it is convenient to connect the first connecting plate 210 and the tension spring, and the tension spring can be prevented from falling off.

[0072] In another embodiment of the present invention, Fig. 9 As shown, a second through hole 322 is provided on one side of the second connecting plate 320 close to the tension spring component 100, and the second end of the tension spring component 100 is connected to the second through hole 322 via a spring hook 229. Specifically, a plurality of second through holes 322 are provided, and the plurality of second through holes 322 are arranged at intervals along the length direction of the second connecting plate 320, and the number of the second through holes 322 is the same as the number of the tension springs, and the second ends of the tension springs are connected to the second through holes 322 via the spring hook 229 in a one-to-one correspondence.

[0073] The utility model also provides a lifting door, which comprises a door body and a tension spring tensioning device as described in any one of the above embodiments, wherein the tension spring tensioning device is connected to the door body.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A tension spring tensioning device, characterized in that: include: Extension spring component (100); The tension adjustment component (200) comprises a first connecting plate (210), a tension adjustment assembly (220) and a locking assembly (230), wherein the first connecting plate (210) is connected to the first end of the tension spring component (100) and the tension adjustment assembly (220), and the tension adjustment assembly (220) is connected to a flexible connecting member (500); the locking assembly (230) is connected to the first connecting plate (210) and the tension adjustment assembly (220), and the locking assembly (230) is suitable for switching between an open state and a locked state; in the open state, the tension adjustment assembly (220) adjusts the tension of the tension spring component (100) by adjusting the length of the flexible connecting member (500); in the locked state, the locking assembly (230) locks the tension adjustment assembly (220).

2. The tension spring tensioning device according to claim 1, characterized in that: The tension adjustment assembly (220) comprises: A base (221), the base (221) being connected to the first connecting plate (210); A ratchet shaft (222) is rotatably disposed on the base (221), and the flexible connecting member (500) is wound around the outer periphery of the ratchet shaft (222); A ratchet (223) is connected to the ratchet shaft (222). The ratchet (223) is connected to the locking assembly (230). In the open state, the ratchet (223) can rotate relative to the locking assembly (230); in the locked state, the locking assembly (230) locks the ratchet (223).

3. The tension spring tensioning device according to claim 2, characterized in that: The locking assembly (230) comprises: A ratchet pawl (231), the ratchet pawl (231) being rotatably connected to the base (221), and the ratchet pawl (231) being meshed with the ratchet wheel (223); An elastic member (232), wherein a first end of the elastic member (232) is connected to the base (221), and a second end of the elastic member (232) is connected to the pawl (231); In the open state, the pawl (231) can rotate relative to the base (221), and the ratchet (223) can rotate relative to the pawl (231); in the locked state, the pawl (231) is fixed to the base (221) by a screw (341) to lock the ratchet (223).

4. The tension spring tensioning device according to claim 2 or 3, characterized in that: A first connecting portion (224) is provided on a side of the base (221) close to the tension spring component (100), and a strip-shaped through hole (225) is provided on a side of the first connecting plate (210) close to the base (221). The first connecting portion (224) is inserted into the strip-shaped through hole (225) and can swing in the strip-shaped through hole (225).

5. The tension spring tensioning device according to claim 4, characterized in that: The first connecting portion (224) is a concave structure.

6. The tension spring tensioning device according to claim 4, characterized in that: The strip-shaped through hole (225) comprises a strip-shaped through hole body (211) and a limiting groove (226); the limiting groove (226) is located on the side of the strip-shaped through hole body (211) close to the base (221); the limiting groove (226) is connected to the strip-shaped through hole body (211); the first connecting portion (224) is located in the limiting groove (226); the width of the limiting groove (226) is smaller than the width of the strip-shaped through hole body (211).

7. The tension spring tensioning device according to claim 4, characterized in that: A first hook (227) is provided on a side of the first connecting plate (210) away from the base (221), and the first end of the tension spring component (100) is hooked to the first hook (227), or a first through hole (228) is provided on a side of the first connecting plate (210) away from the base (221), and the first end of the tension spring component (100) is connected to the first through hole (228) via a spring buckle (229).

8. The tension spring tensioning device according to any one of claims 1 to 3, characterized in that: Also includes: A connecting component (300) comprising a bottom plate (310) and a second connecting plate (320) connected to the bottom plate (310); A second hook (321) is provided on one side of the second connecting plate (320) close to the tension spring component (100), and the second end of the tension spring component (100) is hooked to the second hook (321); at least one of the first connecting plate (210) and the second connecting plate (320) is provided with a limiting plate (330), and the limiting plate (330) is used to limit the tension spring component (100); or, A second through hole (322) is provided on one side of the second connecting plate (320) close to the tension spring component (100), and the second end of the tension spring component (100) is connected to the second through hole (322) via a spring buckle (229).

9. The tension spring tensioning device according to claim 3, characterized in that: A guide shaft (340) is provided on the base (221), and the ratchet pawl (231) is connected to the guide shaft (340).

10. The tension spring tensioning device according to any one of claims 1 to 3, characterized in that: Also includes: The guide sleeve (400) is provided with a plurality of guide channels, the tension spring component (100) comprises a plurality of tension springs, the tension springs are arranged in a one-to-one correspondence through the guide channels, and the guide sleeve (400) is provided with a second connecting portion (410).

11. A lifting door, characterized in that: It comprises a door body and the tension spring tensioning device according to any one of claims 1 to 10, wherein the tension spring tensioning device is connected to the door body.

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