Triangular belt stepless speed change device for rewinding machine

Abstract

The utility model relates to a triangular belt stepless speed change device for a rewinding machine. The triangular belt stepless speed change device comprises a mounting frame component, a first belt wheel component, an adjusting component and a second belt wheel component. Compared with the prior art, the device has the advantages that the adjusting component is connected with the first belt wheel component, so that stepless speed regulation of the triangular belt can be realized by adjusting the groove width of the wheel belt groove under the condition that the speed of the triangular belt needs to be regulated, and compared with the prior art, the device has the advantages of simple structure, continuous speed regulation, convenience in operation and the like.

Description

Technical Field

[0001] This utility model relates to the field of rewinding machine equipment technology, and in particular to a V-belt continuously variable transmission device for a rewinding machine. Background Technology

[0002] Both domestic and international rewinding machines utilize a motor-reducing gearbox structure to connect the unwinding roll motor and the unwinding roll. Once this structure is determined, the reduction ratio between the motor and the unwinding roll is fixed. However, the actual operating state of the rewinding machine is that the unwinding roll has its maximum diameter at the beginning of rewinding and its minimum diameter at the end. The ratio between the minimum and maximum unwinding roll diameters is relatively large, typically exceeding 1:5. Throughout the entire operation, the rewinding machine undergoes a constant power, variable speed, and variable diameter process at a constant operating speed. Previously, some designs opted for dedicated, wide-range adjustable DC motors to achieve wide-range constant power speed regulation. However, this design significantly increases motor costs and, due to the motor's specialized nature, also introduces inconveniences in maintenance and use.

[0003] The existing common solution to the above defects is to use threaded holes and through holes for installation, and rotate to adjust to the next hole to achieve stepped speed regulation of the V-belt.

[0004] Currently, no effective solution has been proposed for the problems of discontinuous speed regulation of V-belts in related technologies. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a continuously variable transmission (CVT) device for rewinding machines, thereby solving problems such as discontinuous speed regulation of VCTs in related technologies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a continuously variable transmission device for a V-belt in a rewinder, comprising:

[0008] Mounting bracket component, which is disposed at the V-belt of the rewinder and is used to mount components;

[0009] A first pulley component is disposed on the mounting bracket component, and the first pulley component has a tire groove for a V-belt to be fitted.

[0010] An adjusting component is disposed on and rotatably connected to the mounting bracket component, and the end of the adjusting component is connected to the first pulley component for adjusting the groove width of the pulley groove;

[0011] The second pulley component is disposed on the mounting bracket component and rotatably connected to the second pulley component, and is used for fitting the V-belt and tightening the V-belt fitted on the first pulley component and the second pulley component.

[0012] In some embodiments, the mounting bracket component includes:

[0013] Mounting bracket, which is located at the V-belt of the rewinder and is used to mount components;

[0014] A threaded connector is provided on the mounting bracket for the adjustment component to pass through and be threadedly connected to the adjustment component.

[0015] In some embodiments, the first pulley component includes:

[0016] A first pulley component is disposed on the mounting bracket component and rotatably connected to the end of the adjusting component;

[0017] The second pulley is disposed on the mounting bracket component and slidably connected to the first pulley, and the pulley groove is formed between the first pulley and the second pulley;

[0018] A connecting shaft is provided, the first end of which is connected to the mounting bracket component, and the second end of which is slidably connected to the second pulley component to support the second pulley component.

[0019] In some embodiments, the first pulley component further includes:

[0020] The first bearing component is disposed inside the first pulley component and is used for rotatable connection with the adjusting component.

[0021] In some embodiments, the first pulley component further includes:

[0022] A first elastic element is sleeved on the connecting shaft and located between the mounting bracket component and the second pulley component, for abutting the second pulley component against the end of the adjusting component.

[0023] In some embodiments, the adjustment component includes:

[0024] An adjusting member passes through the mounting bracket component and is threadedly connected to the mounting bracket component, and the first end of the adjusting member abuts against the first pulley component to drive the second pulley component in the first pulley component to move;

[0025] A handwheel is provided at the second end of the adjusting member and is used to drive the adjusting member to rotate under the action of the operator.

[0026] In some embodiments, the second pulley component includes:

[0027] A rotating connector, the first end of which is connected to the mounting bracket component for mounting parts;

[0028] The third pulley component is connected to the second end of the rotating connector and is used for mounting the V-belt and tightening the V-belt mounted on the third pulley component and the first pulley component.

[0029] In some embodiments, the second pulley component further includes:

[0030] A first shaft assembly, the first end of which is connected to the rotating connector;

[0031] The second shaft assembly has a first end connected to the frame of the rewinder, and the second end of the first shaft assembly abuts against the second end of the second shaft assembly.

[0032] The second elastic element has a first end that extends into the interior of the first shaft assembly and is connected to the first shaft assembly, and a second end that extends into the interior of the second shaft assembly and is connected to the second shaft assembly, for connecting the first shaft assembly and the second shaft assembly.

[0033] In some embodiments, the second pulley component further includes:

[0034] The second bearing component is disposed at the first end of the rotating connector and is used to rotatably connect the first end of the rotating connector to the mounting bracket component.

[0035] In some of these embodiments, it also includes:

[0036] A locking component is disposed on the adjusting component and is used to lock the adjusting component.

[0037] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0038] This utility model discloses a stepless speed regulation device for a V-belt in a rewinding machine. By connecting the adjusting component to the first pulley component, stepless speed regulation of the V-belt can be achieved by adjusting the groove width of the pulley groove when speed regulation of the V-belt is required. Compared with the prior art, this device has the advantages of simple structure, continuous speed regulation, and convenient operation. Attached Figure Description

[0039] Figure 1 This is a schematic diagram (a) of a V-belt continuously variable transmission device according to an embodiment of the present utility model;

[0040] Figure 2 This is a schematic diagram (a) of the mounting bracket component according to an embodiment of the present utility model;

[0041] Figure 3 This is a schematic diagram of the first pulley component and the adjusting component according to an embodiment of the present utility model;

[0042] Figure 4 This is a schematic diagram of the second pulley component according to an embodiment of the present utility model;

[0043] Figure 5 This is a schematic diagram (II) of a V-belt continuously variable transmission device according to an embodiment of the present utility model;

[0044] Figure 6 This is a schematic diagram (II) of the mounting bracket component according to an embodiment of the present utility model.

[0045] The reference numerals in the attached drawings are as follows: 100, mounting bracket component; 110, mounting bracket piece; 120, threaded connector; 121, threaded hole; 122, locking hole;

[0046] 200, First pulley assembly; 210, First pulley component; 211, Second through hole; 220, Second pulley component; 221, Third through hole; 230, Connecting shaft component; 240, First bearing component; 250, First elastic component;

[0047] 300. Adjusting component; 310. Adjusting part; 320. Handwheel part;

[0048] 400. Second pulley assembly; 410. Rotating connector; 420. Third pulley assembly; 430. First shaft assembly; 440. Second shaft assembly; 450. Second elastic element; 460. Second bearing assembly;

[0049] 500. Locking components. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0051] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0052] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0053] Example 1

[0054] An illustrative embodiment of this utility model, such as Figure 1 As shown, a continuously variable transmission (CVT) device for a rewinder includes a mounting frame component 100, a first pulley component 200, an adjusting component 300, and a second pulley component 400. The mounting frame component 100 is disposed at the V-belt of the rewinder and is used to mount components. The first pulley component 200 is disposed on the mounting frame component 100 and has a belt groove for the V-belt to be fitted onto it. The adjusting component 300 is disposed on and rotatably connected to the mounting frame component 100, and its end is connected to the first pulley component 200 for adjusting the width of the belt groove. The second pulley component 400 is disposed on and rotatably connected to the mounting frame component 100 and is used for fitting the V-belt and tightening the V-belt fitted onto the first pulley component 200 and the second pulley component 400.

[0055] like Figure 2 As shown, the mounting bracket component 100 includes a mounting bracket 110 and a threaded connector 120. The mounting bracket 110 is disposed at the V-belt of the rewinder and is used to mount components; the threaded connector 120 is disposed on the mounting bracket 110 and is used for the adjustment component 300 to pass through and be threadedly connected to the adjustment component 300.

[0056] Specifically, the mounting bracket 110 includes two mounting plates and four connecting rods. The four connecting rods are located at the four corners of the mounting plates, and the first and second ends of the connecting rods are connected to the two mounting plates by welding, riveting, or bolting, respectively. It should be noted that the first and second ends of the connecting rods are the two ends of their length direction.

[0057] In some of these embodiments, the mounting bracket 110 includes, but is not limited to, a frame.

[0058] In addition, the mounting bracket 110 also includes a first through hole. The first through hole is located at the center of a mounting plate and allows components in the adjusting member 300 to pass through.

[0059] Specifically, the threaded connector 120 is installed on the mounting bracket 110 by means of welding, riveting or bolting, and the threaded connector 120 has a threaded hole 121, which is coaxial with the first through hole.

[0060] In some of these embodiments, the threaded connector 120 includes, but is not limited to, a lock nut.

[0061] like Figure 3 As shown, the first pulley component 200 includes a first pulley member 210, a second pulley member 220, and a connecting shaft member 230. The first pulley member 210 is disposed on the mounting bracket component 100 and rotatably connected to the end of the adjusting component 300; the second pulley member 220 is disposed on the mounting bracket component 100 and slidably connected to the first pulley member 210, with a pulley groove formed between the first pulley member 210 and the second pulley member 220; the first end of the connecting shaft member 230 is connected to the mounting bracket component 100, and the second end of the connecting shaft member 230 is slidably connected to the second pulley member 220, serving to support the second pulley member 220.

[0062] Specifically, the longitudinal section of the first pulley component 210 is partially arranged in a right-angled trapezoidal structure. The first pulley component 210 is fixed to the mounting bracket 110 by welding, riveting or bolting. The first pulley component 210 has a second through hole 211 in the middle. The second through hole 211 allows the components in the adjusting component 300 to pass through and rotate and connect with the adjusting component 300.

[0063] In some of these embodiments, the first pulley member 210 includes, but is not limited to, a belt pulley.

[0064] Specifically, the longitudinal section of the second pulley 220 is partially arranged in a right-angled trapezoidal structure, and the second pulley 220 and the first pulley 210 are arranged symmetrically. A hollow shaft is coaxially formed on the side opposite to the first pulley 210, and the hollow shaft is slidably connected to the first pulley 210.

[0065] In some of these embodiments, the second pulley 220 includes, but is not limited to, a belt pulley.

[0066] In addition, the second pulley member 220 has a third through hole 221 in the middle, through hole 221 through which the connecting shaft member 230 can pass; furthermore, the second pulley member 220 also has a keyway formed in the wall of the third through hole 221, for the connecting shaft member 230 to be embedded and connected with the second pulley member 220.

[0067] Specifically, the first end of the connecting shaft 230 is fixed to a mounting plate opposite to the adjusting component 300 by means of welding, riveting or bolting, and the second end of the connecting shaft 230 passes through the third through hole 221 of the second pulley 220, and the axis of the connecting shaft 230 is the same as the axis of the second pulley 220; it should be noted that the first end and the second end of the connecting shaft 230 are the two ends of its length direction.

[0068] In some embodiments, the connecting shaft 230 includes, but is not limited to, a round shaft.

[0069] In addition, the connecting shaft 230 also includes a key. The key can be embedded in a keyway on the second pulley 220, thereby preventing the second pulley 220 from rotating.

[0070] Furthermore, the first pulley component 200 also includes a first bearing component 240. The first bearing component 240 is disposed inside the first pulley component 210 and is rotatably connected to the adjusting component 300.

[0071] Specifically, the inner ring of the first bearing component 240 is connected to the adjusting component 300 by welding, riveting or bolting, and the outer ring of the first bearing component 240 is connected to the inner wall of the second through hole 211 of the first pulley component 210 by welding, riveting or bolting, so as to rotatably connect the adjusting component 300 and the first pulley component 210.

[0072] In some of these embodiments, the first bearing element 240 includes, but is not limited to, a ball bearing.

[0073] Furthermore, the first pulley component 200 also includes a first elastic element 250. The first elastic element 250 is sleeved on the connecting shaft component 230 and located between the mounting bracket component 100 and the second pulley component 220, for abutting the end of the second pulley component 220 with the adjusting component 300.

[0074] Specifically, the first elastic element 250 is sleeved on the connecting bearing element, and the first end and the second end of the first elastic element 250 abut against the mounting plate and the second pulley element 220, respectively; it should be noted that the first end and the second end of the first elastic element 250 are the two ends of its length direction.

[0075] In some of these embodiments, the first elastic element 250 includes, but is not limited to, a compression spring.

[0076] like Figure 3 As shown, the adjusting component 300 includes an adjusting member 310 and a handwheel member 320. The adjusting member 310 passes through and is threadedly connected to the mounting bracket component 100, and its first end abuts against the first pulley component 200, for moving the second pulley component 220 within the first pulley component 200. The handwheel member 320 is located at the second end of the adjusting member 310, for rotating the adjusting member 310 under the action of an operator.

[0077] Specifically, the first end of the adjusting member 310 passes through the threaded connector 120 and is threadedly connected to the threaded connector 120, the second end of the adjusting member 310 is connected to the handwheel 320, and the adjusting member 310 can move along the axial direction of the threaded connector 120 during rotation; it should be noted that the first end and the second end of the adjusting member 310 are the two ends of its length direction, respectively.

[0078] In some of these embodiments, the adjusting member 310 includes, but is not limited to, a screw.

[0079] Specifically, the handwheel 320 is connected to the second end of the adjusting component 310 by means of welding, riveting or bolting, so that the operator can drive the adjusting component 310 to rotate through the handwheel 320.

[0080] In some of these embodiments, the handwheel component 320 includes, but is not limited to, a handwheel.

[0081] like Figure 4 As shown, the second pulley assembly 400 includes a rotating connector 410 and a third pulley assembly 420. The first end of the rotating connector 410 is connected to the mounting bracket assembly 100 for mounting components; the third pulley assembly 420 is connected to the second end of the rotating connector 410 for mounting a V-belt and for tightening the V-belt mounted on the third pulley assembly 420 and the first pulley assembly 200.

[0082] Specifically, the first end of the rotating connector 410 is rotatably connected to the connecting rod on the mounting bracket 110, and the second end of the rotating connector 410 is connected to the third pulley 420; it should be noted that the first end and the second end of the rotating connector 410 are the two ends of its length direction, respectively.

[0083] In some embodiments, the rotating connector 410 includes, but is not limited to, a connecting rod.

[0084] Specifically, the third pulley 420 is rotatably connected to the second end of the rotating connector 410, and the third pulley 420 can be fitted with a V-belt to tighten the V-belt fitted on the third pulley 420, the first pulley 210, and the second pulley 220.

[0085] In some of these embodiments, the third pulley 420 includes, but is not limited to, a belt pulley.

[0086] Furthermore, the second pulley component 400 also includes a first shaft assembly 430, a second shaft assembly 440, and a second elastic member 450. The first end of the first shaft assembly 430 is connected to the rotating connector 410; the first end of the second shaft assembly 440 is connected to the frame of the rewinder, and the second end of the first shaft assembly 430 abuts against the second end of the second shaft assembly 440; the first end of the second elastic member 450 extends into the interior of the first shaft assembly 430 and is connected to it, and the second end of the second elastic member 450 extends into the interior of the second shaft assembly 440 and is connected to it, for connecting the first shaft assembly 430 and the second shaft assembly 440.

[0087] Specifically, the first end of the first shaft assembly 430 is hooked to the second end of the rotating connector 410, and the second end of the first bearing 240 is open for the second elastic member 450 to extend into. It should be noted that the first end and the second end of the first shaft assembly 430 are the two ends of its length direction, respectively.

[0088] In some of these embodiments, the first shaft assembly 430 includes, but is not limited to, a sleeve.

[0089] Specifically, the first end of the second shaft assembly 440 is connected to the frame of the rewinder, and the second end of the second shaft assembly 440 is open for the second elastic member 450 to extend into. It should be noted that the first end and the second end of the second shaft assembly 440 are the two ends of its length direction, respectively.

[0090] In some of these embodiments, the second shaft assembly 440 includes, but is not limited to, a sleeve.

[0091] Specifically, the first end of the second elastic member 450 extends into the interior of the first shaft assembly 430 and is connected to the first shaft assembly 430 by means of welding, riveting or bolting. The second end of the second elastic member 450 extends into the interior of the second shaft assembly 440 and is connected to the second shaft assembly 440 by means of welding, riveting or bolting. It should be noted that the first end and the second end of the second elastic member 450 are the two ends of its length direction, respectively.

[0092] In some of these embodiments, the second elastic element 450 includes, but is not limited to, a tension spring.

[0093] Furthermore, the second pulley component 400 also includes a second bearing component 460. The second bearing component 460 is disposed at the first end of the rotating connector 410 and is used to rotatably connect the first end of the rotating connector 410 to the mounting bracket component 100.

[0094] Specifically, the inner ring of the second bearing component 460 is connected to the connecting rod by means of welding, riveting or bolting, and the outer ring of the second bearing component 460 is connected to the first end of the rotating connecting component 410 by means of welding, riveting or bolting.

[0095] In some of these embodiments, the second bearing element 460 includes, but is not limited to, a ball bearing.

[0096] The usage method of this embodiment is as follows:

[0097] In actual operation, when it is necessary to adjust the speed of the V-belt, the operator can manually turn the handwheel 320. The handwheel 320 can drive the adjusting component 310 to rotate, thereby causing the end of the adjusting component 310 to push the second pulley 220 to move away from the first pulley 210, thereby adjusting the distance between the first pulley 210 and the second pulley 220, and realizing stepless speed change of the V-belt.

[0098] The advantage of this embodiment is that by connecting the adjusting component to the first pulley component, stepless speed regulation of the V-belt can be achieved by adjusting the groove width of the pulley groove when speed regulation of the V-belt is required. Compared with the prior art, this device has the advantages of simple structure, continuous speed regulation, and convenient operation.

[0099] Example 2

[0100] This embodiment is a modified embodiment of embodiment 1. The difference between this embodiment and embodiment 1 is that it also includes a locking component 500.

[0101] like Figure 5 and Figure 6 As shown, a V-belt continuously variable transmission device for a rewinder further includes a locking component 500. The locking component 500 is disposed on the adjusting component 300 and is used to lock the adjusting component 300.

[0102] In addition, the threaded connector 120 also has a locking hole 122, which is formed on the circumferential sidewall of the threaded connector 120 and is connected to the threaded hole 121. The axial direction of the locking hole 122 is perpendicular to the axial direction of the threaded hole 121.

[0103] Specifically, the locking component 500 passes through the locking hole 122 on the threaded connector 120, and the end of the locking component 500 abuts against the adjusting component 310 to lock the adjusting component 310.

[0104] In some of these embodiments, the locking component 500 includes, but is not limited to, a pin.

[0105] The usage method of this embodiment is as follows:

[0106] In actual operation, when it is necessary to adjust the speed of the V-belt, the operator can manually turn the handwheel 320. The handwheel 320 can drive the adjusting component 310 to rotate, thereby causing the end of the adjusting component 310 to push the second pulley 220 to move away from the first pulley 210, thereby adjusting the distance between the first pulley 210 and the second pulley 220, and realizing stepless speed change of the V-belt.

[0107] After adjusting the speed of the V-belt, the worker inserts the locking component 500 into the locking hole 122 on the threaded connector 120, and the end of the locking component 500 abuts against the adjusting component 310 to lock the adjusting component 310.

[0108] The advantages of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0109] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A continuously variable transmission (CVT) device for a rewinder, characterized in that, include: Mounting bracket component, which is disposed at the V-belt of the rewinder and is used to mount components; A first pulley component is disposed on the mounting bracket component, and the first pulley component has a tire groove for a V-belt to be fitted. An adjusting component is disposed on and rotatably connected to the mounting bracket component, and the end of the adjusting component is connected to the first pulley component for adjusting the groove width of the pulley groove; The second pulley component is disposed on the mounting bracket component and rotatably connected to the second pulley component, and is used for fitting the V-belt and tightening the V-belt fitted on the first pulley component and the second pulley component.

2. The continuously variable transmission (CVT) device according to claim 1, characterized in that, The mounting bracket component includes: Mounting bracket, which is located at the V-belt of the rewinder and is used to mount components; A threaded connector is provided on the mounting bracket for the adjustment component to pass through and be threadedly connected to the adjustment component.

3. The continuously variable transmission (CVT) device according to claim 1, characterized in that, The first pulley component includes: A first pulley component is disposed on the mounting bracket component and rotatably connected to the end of the adjusting component; The second pulley is disposed on the mounting bracket component and slidably connected to the first pulley, and the pulley groove is formed between the first pulley and the second pulley; A connecting shaft is provided, the first end of which is connected to the mounting bracket component, and the second end of which is slidably connected to the second pulley component to support the second pulley component.

4. The continuously variable transmission device with a V-belt according to claim 3, characterized in that, The first pulley component further includes: The first bearing component is disposed inside the first pulley component and is used for rotatable connection with the adjusting component.

5. The continuously variable transmission (CVT) device according to claim 3, characterized in that, The first pulley component further includes: A first elastic element is sleeved on the connecting shaft and located between the mounting bracket component and the second pulley component, for abutting the second pulley component against the end of the adjusting component.

6. The continuously variable transmission device with a V-belt according to claim 1, characterized in that, The adjusting component includes: An adjusting member passes through the mounting bracket component and is threadedly connected to the mounting bracket component, and the first end of the adjusting member abuts against the first pulley component to drive the second pulley component in the first pulley component to move; A handwheel is provided at the second end of the adjusting member and is used to drive the adjusting member to rotate under the action of the operator.

7. The continuously variable transmission device with a V-belt according to claim 1, characterized in that, The second pulley component includes: A rotating connector, the first end of which is connected to the mounting bracket component for mounting parts; The third pulley component is connected to the second end of the rotating connector and is used for mounting the V-belt and tightening the V-belt mounted on the third pulley component and the first pulley component.

8. The continuously variable transmission (CVT) device according to claim 7, characterized in that, The second pulley component also includes: A first shaft assembly, the first end of which is connected to the rotating connector; The second shaft assembly has a first end connected to the frame of the rewinder, and the second end of the first shaft assembly abuts against the second end of the second shaft assembly. The second elastic element has a first end that extends into the interior of the first shaft assembly and is connected to the first shaft assembly, and a second end that extends into the interior of the second shaft assembly and is connected to the second shaft assembly, for connecting the first shaft assembly and the second shaft assembly.

9. The continuously variable transmission device with a V-belt according to claim 7, characterized in that, The second pulley component also includes: The second bearing component is disposed at the first end of the rotating connector and is used to rotatably connect the first end of the rotating connector to the mounting bracket component.

10. The continuously variable transmission (CVT) device according to claim 1, characterized in that, Also includes: A locking component is disposed on the adjusting component and is used to lock the adjusting component.

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