Postoperative rehabilitation exercise device for breast tumor

Abstract

The invention provides a postoperative rehabilitation training device for breast tumors, and relates to the technical field of rehabilitation training devices. The bearing assembly is installed in the middle of the bottom of the main frame assembly, the horizontal fixed sliding frame is arranged in the middle of the top of the main frame assembly, and the bearing assembly in the middle of the bottom of the main frame assembly is directly arranged to be in a movable state, so that the bearing assembly can be unfolded to lie flat and can also be used in a sitting mode; the position of the guide assembly can be controlled by rotating and adjusting the adjusting assembly, the guide assembly is more convenient to use, the training assembly of the guide assembly is arranged to be of a telescopic structure, handheld upper limb training is facilitated, and the control assembly can adjust the stretching assembly to better correspond to the training position during training; the problems that the movement range and angle of sports equipment are difficult to control, and secondary strain is inevitably caused by inevitable inaccurate positions and angles due to autonomous training are solved.

Description

Technical Field

[0001] The invention relates to the technical field of rehabilitation training devices, and in particular to a post-operative rehabilitation training device for breast tumors. Background Art

[0002] With the continuous development of science and technology, people's medical level has gradually improved. Various common diseases of the human body can be treated, including various tumors. There are many types of tumors, especially breast tumors. Surgical treatment is an important treatment method for breast tumors. Patients with benign breast tumors can follow the doctor's advice to undergo fibroadenoma resection, breast duct dissection, etc. It is recommended that patients go to the hospital for regular follow-up after surgery, and keep a good mood. They can do some aerobic exercise appropriately to achieve better recovery.

[0003] Rehabilitation training after breast cancer treatment requires upper limb training. General sports equipment is mostly a single structure, and it is difficult to control the range of motion and angle. There is also a way to conduct independent training, but during independent training, inaccuracies in position and angle are inevitable, leading to the problem of secondary strain. Summary of the invention

[0004] The disclosed embodiment relates to a postoperative rehabilitation exercise device for breast tumors, in which a load-bearing component in the middle of the bottom of a main frame component is directly set to an active state, so that the load-bearing component can be unfolded to lie flat, and also can be used for sitting. Rotating and adjusting the adjustment component can realize position control of the guide component, making the guide component more convenient to use. The training component of the guide component is set to a telescopic structure, which is convenient for hand-held upper limb training. The control component can adjust the stretching component to better correspond to the training position during training.

[0005] In a first aspect of the present disclosure, a postoperative rehabilitation exercise device for breast tumors is provided, which specifically includes: a main frame assembly; a load-bearing assembly is installed at a middle position at the bottom of the main frame assembly, a horizontal fixed slide is provided at a middle position at the top of the main frame assembly, an adjustment assembly is installed at the bottom right side of the fixed slide of the main frame assembly, a guide assembly is slidably installed on the fixed slide of the main frame assembly, a training assembly is slidably installed on the guide assembly, a stretching assembly is slidably installed at the top position of the main frame assembly, and control assemblies are installed at left and right positions of the stretching assembly.

[0006] Furthermore, the main frame of the main frame assembly is configured as a frame structure, a front-to-rear symmetrical guide rail groove is provided at the middle position of the bottom of the main frame, a stop block is provided at the right side of the guide rail groove, an outer support rod is provided at the right side of the bottom of the main frame, and the outer support rod is connected to the load-bearing assembly.

[0007] Furthermore, the bearing plates of the bearing assembly are arranged into three groups which are hingedly connected to each other. The bearing plate on the right is connected to the outer support rod of the main frame assembly, the bearing plate on the left is provided with a main support rod at the bottom, wheels are rotatably installed at the bottom of the main support rod, and support rods are installed at the outer ends of the connection positions of the two groups of bearing plates on the right, and the support rods adopt a telescopic structure.

[0008] Furthermore, the adjusting column of the adjusting assembly is vertically rotatably installed in the middle position of the right side of the main frame assembly. The lower half of the adjusting column is set as a hexagonal surface structure. The top of the adjusting column is connected to the movable column through a bevel gear. A follower block is screwed on the movable column, and the follower block is slidably installed on the bottom surface of the fixed slide frame of the main frame assembly.

[0009] Furthermore, a groove is provided on the side of the sliding frame of the guide assembly, and the sliding frame is slidably installed on the fixed sliding frame through the groove. A guide frame is provided at the outer end of the sliding frame, and the guide frame is configured as an arc structure. A connecting rod is added between the end of the guide frame and the sliding frame, and the end of the sliding frame is slidably installed on the main frame assembly at the connection between the guide frame and the guide frame.

[0010] Furthermore, the swing arm of the training component is hingedly mounted on the guide component, and the end position of the swing arm is slidably mounted on the guide frame of the guide component. An extension column is slidably mounted on the swing arm, and the extension column is arranged as a vertical structure. The extension column adopts a telescopic structure, and the bottom of the extension column is arranged as a bending rod, and the bending rod is in the shape of a right-angle frame.

[0011] Furthermore, the top sliding rod of the stretching assembly is configured as a long rod structure, the top sliding rod is slidably installed at the top position of the main frame assembly, a rotating roller is rotatably installed on the top sliding rod, an annular groove is provided on the outside of the rotating roller, the top sliding rod and the rotating roller are both configured as front-to-back symmetrical structures, a drawstring is wrapped between the rotating rollers, and a pull ring is provided at the end of the drawstring.

[0012] Furthermore, the control belt of the control assembly is configured to be installed on the rear edge of the main frame assembly, a control block is installed at the bottom position of the control belt, the control belt is connected and contacted with a synchronization rod, the synchronization rod is rotatably installed at the top position of the main frame assembly, the front end position of the synchronization rod is connected through a synchronization belt, and both the synchronization belt and the control belt are connected to the stretching assembly.

[0013] The present invention provides a postoperative rehabilitation exercise device for breast tumors, which has the following beneficial effects:

[0014] When the bearing assembly is folded and stowed in the present invention, the bearing assembly can be used for sitting. After the patient sits on the bearing assembly, the adjusting assembly is manually rotated to allow the adjusting assembly to drive the guiding assembly to realize the sliding of the guiding assembly at the top position of the main frame assembly, so that the training assembly on the guiding assembly can better correspond to the patient's position. The external structure of the guiding assembly is arranged in an arc shape, so that the training assembly installed on the guiding assembly can slide along the arc portion, so that the training assembly assists in realizing the swing training of the upper limbs. At the same time, the training assembly itself adopts a telescopic structure, and the training assembly can adjust its position, so that the training assembly can be used for patients of any body shape. After the bearing assembly is unfolded on the main frame assembly, the patient can lie flat on the bearing assembly. The adjustable training assembly and guiding assembly avoid injuries caused by excessive movement of the patient, so that better rehabilitation training can be carried out. Then, the position of the stretching assembly is adjusted by the control assembly to realize the position of the stretching assembly for the lying patient. At this time, the drawstring of the stretching assembly can be held by hand to realize the rehabilitation training of the upper limbs of the lying patient.

[0015] In addition, first, the outer support rod of the main frame is set on the right side so that the outer support rod can assist in connecting the load-bearing components, and a guide rail groove is set in the middle position of the bottom of the main frame. Two sets of front-to-back symmetrical guide rail grooves can allow the load-bearing components to stably slide in the guide rail grooves. The block on the right side of the guide rail groove has the effect of allowing the guide rail groove to limit the position of the load-bearing components after the load-bearing components slide in the guide rail groove, thereby allowing the load-bearing components to be shielded for subsequent use.

[0016] In addition, a main support rod is directly set at the bottom of the load-bearing plate on the left side, and wheels are rotatably installed at the bottom of the main support rod, so that the load-bearing plate can slide in the guide groove through the wheels of the main support rod, so as to realize the overall unfolding and folding operations of the load-bearing assembly, and realize the two usage status effects of the load-bearing assembly, and support rods are installed at the connecting positions of the two groups of load-bearing plates on the right side, so that after the load-bearing plates are unfolded to each other, the support rods can realize the supporting effect of the support rods on the load-bearing plates, and the support rods are set as telescopic joints, so that the support rods can be extended out for auxiliary support after the load-bearing plates are folded.

[0017] In addition, the adjusting column is set to a vertical rotating installation state, and the lower half of the adjusting column is set to a hexagonal structure, so that the adjusting column is more convenient for hand-held control, and the movable columns on the top of the adjusting column are connected to each other in a bevel gear transmission manner to realize the transmission of the adjusting column to the movable column. When the movable column rotates, it can transmit the driven block to realize the position movement of the driven block, and the driven block contacts the guide assembly to realize the sliding adjustment of the position of the guide assembly by the adjusting assembly.

[0018] In addition, a groove is set on one side surface of the sliding frame so that the sliding frame can be slidably installed on the fixed sliding frame through the groove, thereby facilitating the control of the guide assembly by the adjustment component, and the guide frame of the sliding frame is set to an arc structure, so that after the training assembly is installed on the guide assembly, it is convenient for the training assembly to slide along the arc-shaped guide frame, and the end connection between the sliding frame and the guide frame is slid on the main frame assembly, so that the guide assembly as a whole can be stable during sliding movement, and the extension column is set to be slidably installed on the swing rod, and the vertical extension column adopts a telescopic structure. When the patient holds the extension column, the extension column can slide on the guide frame, and the extension column set to be telescopic can make the training assembly as a whole more convenient to hold, and the bending rod at the end of the extension column is set to a right-angle frame shape, which makes it more convenient to hold the bending rod.

[0019] In addition, the top slide bar is arranged to be slidably installed on the top of the main frame assembly, so that the top slide bar can act on the main frame assembly, and the rotating roller of the top slide bar can wrap the drawstring around the ring groove, and the draw ring arranged at the end of the drawstring can be directly held by hand, so that the patient can directly apply force to each other during training, so that the upper limbs can be assisted by the drawstring to achieve the training effect, and when the stretching assembly needs to be adjusted, the control block can be directly controlled by hand to control the control belt to realize the transmission of the control belt to the synchronization rod, and the synchronization belt at the front end of the synchronization rod can realize synchronous rotation with the control belt, and the control belt and the synchronization belt are both connected to the stretching assembly to realize the stable control of the stretching assembly by the control assembly, and the synchronization belt and the control belt are connected to the stretching assembly at the same time to realize the more stable transmission of the stretching assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0021] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached picture:

[0023] Figure 1 The overall structure diagram of the present application is shown;

[0024] Figure 2 A schematic diagram showing the main frame assembly structure of the present application is shown;

[0025] Figure 3 A schematic diagram showing the structure of the stretching component and the control component of the present application is shown;

[0026] Figure 4 A schematic diagram showing the structure of the regulating assembly of the present application is shown;

[0027] Figure 5A schematic diagram showing the control component structure of the present application is shown;

[0028] Figure 6 A schematic diagram showing the structure of the stretching assembly of the present application is shown;

[0029] Figure 7 A schematic diagram showing the guide assembly structure of the present application is shown;

[0030] Figure 8 A schematic diagram showing the structure of the training component of the present application is shown;

[0031] Reference numerals list

[0032] 1. Main frame assembly; 101. Main frame; 102. External support rod; 103. Guide rail groove;

[0033] 2. Bearing assembly; 201. Bearing plate; 202. Main support rod; 203. Support rod;

[0034] 3. Adjustment assembly; 301. Adjustment column; 302. Moving column; 303. Follower block;

[0035] 4. Guide assembly; 401. Sliding frame; 402. Guide frame;

[0036] 5. Training component; 501. Swinging rod; 502. Extension column; 503. Bending rod;

[0037] 6. stretching assembly; 601. top slide bar; 602. rotating roller; 603. pulling belt;

[0038] 7. Control assembly; 701. Control belt; 702. Control block; 703. Synchronous rod;

[0039] 8. Fixed slide. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figures 1 to 8 :

[0042] The present invention proposes a postoperative rehabilitation exercise device for breast tumors, comprising: a main frame assembly 1; a load-bearing assembly 2 is installed at the middle position of the bottom of the main frame assembly 1, a horizontal fixed slide 8 is provided at the middle position of the top of the main frame assembly 1, an adjustment assembly 3 is installed at the bottom right side of the fixed slide 8 of the main frame assembly 1, a guide assembly 4 is slidably installed on the fixed slide 8 of the main frame assembly 1, a training assembly 5 is slidably installed on the guide assembly 4, a stretching assembly 6 is slidably installed at the top position of the main frame assembly 1, and a control assembly 7 is installed at the left and right positions of the stretching assembly 6.

[0043] In the present disclosure, Figure 2 As shown, the main frame 101 of the main frame assembly 1 is set as a frame structure, and a front-to-back symmetrical guide rail groove 103 is set at the middle position of the bottom of the main frame 101, and a block is set on the right side of the guide rail groove 103. An outer support rod 102 is set at the right side of the bottom of the main frame 101, and the outer support rod 102 is connected to the load-bearing assembly 2. First, the outer support rod 102 of the main frame 101 is set at the right side, so that the outer support rod 102 can be used to assist in connecting the load-bearing assembly 2, and the guide rail groove 103 is set at the middle position of the bottom of the main frame 101. Two groups of front-to-back symmetrical guide rail grooves 103 can allow the load-bearing assembly 2 to stably slide in the guide rail groove 103. The block on the right side of the guide rail groove 103 has the effect of allowing the load-bearing assembly 2 to limit the position of the guide rail groove 103 after sliding in the guide rail groove 103, so as to facilitate the load-bearing assembly 2 to block subsequent use.

[0044] In the present disclosure, Figure 2 As shown, the bearing plates 201 of the bearing assembly 2 are arranged in three groups that are hingedly connected to each other. The bearing plate 201 on the right is connected to the outer support rod 102 of the main frame assembly 1, and the bearing plate 201 at the left position is provided with a main support rod 202 at the bottom, and a wheel is rotatably installed at the bottom of the main support rod 202. The main support rod 202 is directly provided at the bottom of the bearing plate 201 at the left position, and the wheel is rotatably installed at the bottom of the main support rod 202, so that the bearing plate 201 slides in the guide groove 103 through the wheel of the main support rod 202, so as to realize the overall support assembly 2 The operations of unfolding and folding realize two usage status effects of the bearing assembly 2. A support rod 203 is installed at the outer end of the connection position of the two groups of bearing plates 201 on the right side. The support rod 203 adopts a telescopic structure. The support rod 203 is installed at the connection position of the two groups of bearing plates 201 on the right side, so that after the bearing plates 201 are unfolded to each other, the support rod 203 can achieve the supporting effect of the bearing plates 201. The support rod 203 is set to a telescopic structure, so that the support rod 203 can be extended out for auxiliary support after the bearing plates 201 are folded.

[0045] In the present disclosure, Figure 4The cam 302 is connected to the control panel 306 by a toothed structure, and the toothed structure 308 is connected to the control panel 307 by a toothed structure.

[0046] In the present disclosure, Figure 7 As shown, a groove is provided on the side of the sliding frame 401 of the guide assembly 4, and the sliding frame 401 is slidably installed on the fixed sliding frame 8 through the groove. A guide frame 402 is provided at the outer end of the sliding frame 401, and the guide frame 402 is arranged as an arc structure. A groove is provided on one side surface of the sliding frame 401 so that the sliding frame 401 can be slidably installed on the fixed sliding frame 8 through the groove, thereby facilitating the adjustment component 3 to control the guide assembly 4, and the guide frame 402 of the sliding frame 401 is arranged as an arc structure, so that after the training component 5 is installed on the guide assembly 4, it is convenient for the training component 5 to slide along the arc-shaped guide frame 402, and a connecting rod is added between the end of the guide frame 402 and the sliding frame 401, and the connection between the end of the sliding frame 401 and the guide frame 402 is slidably installed on the main frame assembly 1, and the end connection between the sliding frame 401 and the guide frame 402 is slid on the main frame assembly 1, so that the guide assembly 4 as a whole can be stable during sliding movement.

[0047] In the present disclosure, Figure 8 As shown, the swing rod 501 of the training component 5 is hingedly mounted on the guide component 4, and the end position of the swing rod 501 is slidably mounted on the guide frame 402 of the guide component 4. An extension column 502 is slidably mounted on the swing rod 501, and the extension column 502 is arranged to be a vertical structure. The extension column 502 adopts a telescopic structure. The extension column 502 is arranged to be slidably mounted on the swing rod 501, and the vertical extension column 502 adopts a telescopic structure. When the patient holds the extension column 502, the extension column 502 can slide on the guide frame 402, and the extension column 502 arranged to be telescopic can make the training component 5 as a whole more convenient to hold. The bottom of the extension column 502 is arranged to be a bending rod 503, and the bending rod 503 is in the shape of a right angle frame. The bending rod 503 at the end of the extension column 502 is arranged to be in the shape of a right angle frame, which makes it more convenient to hold the bending rod 503.

[0048] Embodiment 2, based on embodiment 1, as Figure 5 Figure 3 As shown, the top sliding bar 601 of the stretching component 6 is configured as a long rod structure, and the top sliding bar 601 is slidably installed at the top position of the main frame component 1. A rotating roller 602 is rotatably installed on the top sliding bar 601, and an annular groove is arranged on the outside of the rotating roller 602. The top sliding bar 601 and the rotating roller 602 are both configured as front-to-back symmetrical structures, and a drawstring 603 is wound between the rotating rollers 602. A pull ring is arranged at the end of the drawstring 603. The top sliding bar 601 is configured to be slidably installed on the top of the main frame component 1, so that the top sliding bar 601 can act on the main frame component 1, and the rotating roller 602 of the top sliding bar 601 can wrap the drawstring 603 around the annular groove, and the pull ring arranged at the end of the drawstring 603 can be directly held by hand, so that the patient can directly apply force to each other during training, so that the upper limbs can be assisted by the drawstring 603 for training effect.

[0049] In the present disclosure, Figure 6 Figure 3 As shown, the control belt 701 of the control component 7 is set to be installed on the rear edge of the main frame component 1, and a control block 702 is installed at the bottom position of the control belt 701. The control belt 701 is connected and contacted with the synchronization rod 703, and the synchronization rod 703 is rotatably installed at the top position of the main frame component 1. The front end position of the synchronization rod 703 is connected by a synchronization belt, and the synchronization belt and the control belt 701 are both connected to the stretching component 6. When the stretching component 6 needs to be adjusted, the control block 702 is directly hand-held and controlled, so that the control block 702 controls the control belt 701 to realize the transmission of the control belt 701 to the synchronization rod 703, and the synchronization belt at the front end of the synchronization rod 703 realizes synchronous rotation with the control belt 701, and the control belt 701 and the synchronization belt are both connected to the stretching component 6, so as to realize the stable control of the stretching component 6 by the control component 7, and the synchronization belt and the control belt 701 are connected to the stretching component 6 at the same time, so as to realize the more stable transmission of the stretching component 6.

[0050] The working principle of this embodiment is as follows: when it is necessary to sit or stand, first slide the bearing assembly 2 toward the right position to allow the bearing assembly 2 to form a seat shape as a whole, then hold the bottom part of the adjustment column 301, manually rotate the adjustment column 301, and allow the adjustment assembly 3 to adjust the position of the guide assembly 4 on the top of the main frame assembly 1. The guide frame 402 of the guide assembly 4 is set to an arc structure, the training assembly 5 is slidably installed along the guide frame 402, and the extension column 502 of the training assembly 5 is slidably installed on the swing rod 501. At this time, the patient sitting on the bearing assembly 2 can directly hold the bending rod 503, and let the bending rod 503 slide along the guide frame 402 through the extension column 502 to achieve the patient's upper limb auxiliary training. The extension column 502 adopts a telescopic structure as a whole, so that patients with different body shapes can stably hold the end of the bending rod 503;

[0051] When lying flat training is required, the supporting component 2 is directly slid toward the left position to unfold the supporting component 2 as a whole, so that the patient can lie directly on the supporting component 2. At this time, the control block 702 of the control component 7 is adjusted, and the control component 7 is directly connected to the stretching component 6, so that the unfolding width of the stretching component 6 can be adjusted by adjusting the control block 702, and the drawstring 603 on the stretching component 6 can be directly held by hand. At this time, the upper limbs of the lying patient can pull each other to achieve auxiliary rehabilitation training for the upper limbs.

Claims

1. A postoperative rehabilitation exercise device for breast tumors, comprising: A main frame assembly (1); a bearing assembly (2) is installed at the middle position of the bottom of the main frame assembly (1), and a horizontal fixed slide (8) is arranged at the middle position of the top of the main frame assembly (1), characterized in that an adjustment assembly (3) is installed at the bottom right of the fixed slide (8) of the main frame assembly (1), a guide assembly (4) is slidably installed on the fixed slide (8) of the main frame assembly (1), a training assembly (5) is slidably installed on the guide assembly (4), a stretching assembly (6) is slidably installed at the top position of the main frame assembly (1), and a control assembly (7) is installed at the left and right positions of the stretching assembly (6).

2. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: The main frame (101) of the main frame assembly (1) is configured as a frame structure, a front-to-rear symmetrical guide rail groove (103) is provided at the middle position of the bottom of the main frame (101), a stopper is provided at the right side of the guide rail groove (103), an outer support rod (102) is provided at the right side of the bottom of the main frame (101), and the outer support rod (102) is connected to the bearing assembly (2).

3. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: The bearing plates (201) of the bearing assembly (2) are arranged in three groups that are hingedly connected to each other. The bearing plate (201) on the right side is connected to the outer support rod (102) of the main frame assembly (1). The bearing plate (201) on the left side is provided with a main support rod (202) at the bottom. A wheel is rotatably mounted at the bottom of the main support rod (202). A support rod (203) is installed at the outer end of the connection position of the two groups of bearing plates (201) on the right side. The support rod (203) adopts a telescopic structure.

4. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: The adjusting column (301) of the adjusting assembly (3) is vertically rotatably mounted at the middle position on the right side of the main frame assembly (1); the lower half of the adjusting column (301) is arranged as a hexagonal surface structure; the top of the adjusting column (301) is connected to the movable column (302) via a bevel gear; a driven block (303) is screwed onto the movable column (302); and the driven block (303) is slidably mounted at the bottom surface of the fixed slide (8) of the main frame assembly (1).

5. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: A groove is provided on the side of the sliding frame (401) of the guide assembly (4), and the sliding frame (401) is slidably mounted on the fixed sliding frame (8) through the groove. A guide frame (402) is provided at the outer end of the sliding frame (401), and the guide frame (402) is configured as an arc structure. A connecting rod is additionally installed between the end of the guide frame (402) and the sliding frame (401), and the connection between the end of the sliding frame (401) and the guide frame (402) is slidably mounted on the main frame assembly (1).

6. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: The swing rod (501) of the training component (5) is hingedly mounted on the guide component (4), the end position of the swing rod (501) is slidably mounted on the guide frame (402) of the guide component (4), an extension column (502) is slidably mounted on the swing rod (501), the extension column (502) is arranged as a vertical structure, the extension column (502) adopts a telescopic structure, the bottom of the extension column (502) is arranged as a bending rod (503), and the bending rod (503) is in the shape of a right angle frame.

7. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: The top sliding bar (601) of the stretching component (6) is configured as a long rod structure. The top sliding bar (601) is slidably mounted at the top position of the main frame component (1). A rotating roller (602) is rotatably mounted on the top sliding bar (601). An annular groove is provided on the outside of the rotating roller (602). The top sliding bar (601) and the rotating roller (602) are both configured as a front-to-back symmetrical structure. A drawstring (603) is wound between the rotating rollers (602), and a draw ring is provided at the end of the drawstring (603).

8. The postoperative rehabilitation exercise device for breast tumor according to claim 1, characterized in that: The control belt (701) of the control assembly (7) is arranged to be installed on the rear edge of the main frame assembly (1); a control block (702) is installed at the bottom of the control belt (701); the control belt (701) is connected and contacted with a synchronization rod (703); the synchronization rod (703) is rotatably installed at the top of the main frame assembly (1); the front end of the synchronization rod (703) is connected via a synchronization belt; the synchronization belt and the control belt (701) are both connected to the stretching assembly (6).

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