Standing position upper limb rehabilitation exercise equipment based on electric stimulation system

Abstract

The utility model discloses a kind of standing position upper limb rehabilitation exercise equipment based on electric stimulation system, belong to rehabilitation equipment technical field, including base, mounting bracket, small arm support structure and stimulating electrode piece, further include exercise mechanism;The both sides of base are fixedly installed with mounting bracket;Upper support frame is fixedly installed on mounting bracket;The middle part of mounting bracket is installed with small arm support structure;Base and mounting bracket are installed with exercise mechanism;Small arm support structure and upper support frame are installed with stimulating electrode piece;Exercise mechanism includes connecting disc, first connection module, second connection module, training module and intensity adjusting module, connecting disc is connected with small arm support structure, training module is installed on mounting bracket;First connection module and second connection module are installed on connecting disc, intensity adjusting module is installed on base. By the above-mentioned mode, by the cooperation of connecting disc, first connection module, second connection module and training module, the device can be adjusted according to patient condition.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation equipment technology, specifically to a standing upper limb rehabilitation exercise device based on an electrical stimulation system. Background Technology

[0002] In the rehabilitation process of patients with upper limb motor disorders caused by trauma, surgery, stroke, etc., it is necessary to conduct rehabilitation training of a certain intensity according to the patient's condition in order to restore the patient's motor function and avoid muscle atrophy and joint stiffness.

[0003] For example, Chinese patent CN215960962U discloses a neuro-electric stimulation upper limb rehabilitation training device. This device activates upper limb cells through neuro-electric stimulation and drives the patient's upper limb movement through a driving device, thereby assisting the patient in restoring upper limb function.

[0004] However, different patients have different conditions and require different intensities of exercise; the device is difficult to adjust different exercise modes according to the patient's upper limb function, and therefore it is difficult to adjust the corresponding training intensity according to the patient's condition.

[0005] Based on this, the present invention designs a standing upper limb rehabilitation exercise device based on an electrical stimulation system to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a standing upper limb rehabilitation exercise device based on an electrical stimulation system.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A standing upper limb rehabilitation exercise device based on an electrical stimulation system includes a base, a mounting frame, a forearm support structure and stimulation electrode pads, and also includes an exercise mechanism;

[0009] Mounting frames are fixedly installed on both sides of the base; an upper support frame is fixedly installed on the mounting frames; a forearm support structure is installed in the middle of the mounting frames; an exercise mechanism is installed on the base and mounting frames; stimulation electrode pads are installed on the forearm support structure and the upper support frame.

[0010] The exercise mechanism includes a connecting plate, a first connecting module, a second connecting module, a training module, and an intensity adjustment module. The connecting plate is connected to the forearm support structure, and the training module is installed on the mounting frame. The first connecting module and the second connecting module are installed on the connecting plate, and the intensity adjustment module is installed on the base.

[0011] Furthermore, the first connecting module and the second connecting module are located on both sides of the rotation center of the connecting plate, with the first connecting module located on the side of the connecting plate away from the forearm support structure and the second connecting module located on the side of the connecting plate closer to the forearm support structure.

[0012] Furthermore, the forearm support structure includes a fixed shaft, a forearm support frame, a support plate, and straps. The fixed shaft is rotatably mounted on the mounting frame and is fixedly connected to the rear end of the forearm support frame. A support plate for supporting the patient's forearm is fixedly mounted on the forearm support frame, and straps for fixing the patient's forearm are symmetrically fixedly mounted on the support plate. Electrode pads for stimulating the patient's forearm are fixedly mounted on the support plate. A connecting plate is fixedly connected to the fixed shaft.

[0013] Furthermore, the second connection module has the same structure as the first connection module.

[0014] Furthermore, the training module includes a rotating guide wheel, a connecting rope, a moving box, and a guiding assembly. The rotating guide wheel is rotatably mounted on a mounting frame, and the guiding assembly is mounted on the mounting frame. One end of the connecting rope is fixedly mounted on the rotating guide wheel, and the other end of the connecting rope passes around the rotating guide wheel and the guiding assembly and is fixedly connected to the moving box.

[0015] Furthermore, the first connection module includes a locking component and an unlocking component, which are mounted on the connection disk.

[0016] Furthermore, the locking assembly includes a locking pin, a limiting slide rod, and a locking spring. The limiting slide rod is slidably connected to the connecting plate. A locking pin is fixedly installed on the outer side of the limiting slide rod. A locking groove is opened on the inner side of the rotating guide wheel, and the locking pin is inserted into the locking groove. A locking spring is fitted over the limiting slide rod. One end of the locking spring is fixedly connected to the locking pin, and the other end of the locking spring is fixedly connected to the connecting plate.

[0017] Furthermore, the locking groove is provided in multiple ways, and the multiple locking grooves are evenly distributed in a circular array with equal spacing on the rotating guide wheel.

[0018] Furthermore, the unlocking component includes an electromagnetic block and a magnetic block, with the electromagnetic block fixedly installed inside the connecting plate and the magnetic block fixedly installed inside the locking pin.

[0019] Furthermore, the intensity adjustment module includes a fixed box, a delivery pump, a delivery pipe, limiting wheels, and a discharge assembly. The fixed box is fixedly mounted on the base, and the delivery pump is fixedly mounted on the fixed box. One end of the delivery pipe is connected to the delivery pump, and the other end of the delivery pipe is connected to the upper end of the movable box. Limiting wheels for limiting the delivery pipe are rotatably mounted on the mounting frame. The discharge assembly is installed on the lower side of the movable box and on the fixed box. The fixed box is connected to the movable box through the delivery pump and the delivery pipe. The movable box and the fixed box are filled with liquid.

[0020] Compared to existing technologies, the advantages of this invention are as follows: First, the forearm support structure is connected to the training module via the first connecting module on the connecting plate, while the second connecting module is not connected. This, through the cooperation of the connecting plate, the first connecting module, and the training module, reduces the force required for the patient to raise and lower their forearm, making the exercise intensity lower than the force required for the patient to raise their forearm freely, thus assisting the patient in rehabilitation training. Second, the second connecting module on the connecting plate is connected to the training module, while the first connecting module is not connected. This, through the cooperation of the connecting plate, the second connecting module, and the training module, increases the force required for the patient to raise and lower their forearm, making the exercise intensity lower than the force required for the patient to raise their forearm freely, thus increasing the patient's exercise intensity and assisting the patient in higher-intensity rehabilitation training. Furthermore, through the cooperation of the connecting plate, the first connecting module, the second connecting module, and the training module, the device can be adjusted according to the patient's condition, increasing its applicability. Simultaneously, during use, the exercise intensity can be changed through the intensity adjustment module, further expanding its applicability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This utility model relates to a three-dimensional standing upper limb rehabilitation exercise device based on an electrical stimulation system. Figure 1 ;

[0023] Figure 2 This is a front view of a standing upper limb rehabilitation exercise device based on an electrical stimulation system according to this utility model;

[0024] Figure 3 This is a left view of a standing upper limb rehabilitation exercise device based on an electrical stimulation system according to this utility model.

[0025] Figure 4 This utility model relates to a three-dimensional standing upper limb rehabilitation exercise device based on an electrical stimulation system. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the guide wheel and its connecting structure.

[0027] Figure 6 This is a schematic diagram of the connecting disk and its connection structure.

[0028] The labels in the diagram represent:

[0029] 1. Base; 11. Pad; 2. Mounting frame; 21. Upper support frame; 3. Forearm support structure; 31. Fixed shaft; 32. Forearm support frame; 33. Support plate; 34. Straps; 4. Exercise mechanism; 41. Connecting plate; 42. First connecting module; 421. Electromagnetic block; 422. Locking pin; 423. Limiting slide bar; 424. Locking spring; 425. Locking groove; 43. Second connecting module; 44. Training module; 441. Rotating guide wheel; 442. Connecting rope; 443. Guide wheel; 444. Moving box; 445. Guide rail; 45. Intensity adjustment module; 451. Fixed box; 452. Delivery pump; 453. Valve; 454. Delivery pipe; 455. Discharge pipe; 456. Limiting wheel. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0032] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-5 A standing upper limb rehabilitation exercise device based on an electrical stimulation system includes a base 1, a mounting frame 2, a forearm support structure 3, and stimulation electrode pads; it also includes an exercise mechanism 4.

[0033] A pad 11 is placed on the base 1, and mounting frames 2 are symmetrically fixed on both sides of the base 1; an upper support frame 21 for fixing the upper arm is fixedly installed on the upper side of the mounting frame 2; a forearm support structure 3 for supporting the forearm is installed in the middle of the mounting frame 2; an exercise mechanism 4 is installed on the base 1 and the mounting frame 2; stimulation electrode pads for stimulating the patient's upper limb are installed on the forearm support structure 3 and the upper support frame 21.

[0034] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the exercise mechanism 4 includes a connecting plate 41, a first connecting module 42, a second connecting module 43, a training module 44, and an intensity adjustment module 45. The connecting plate 41 is connected to the forearm support structure 3, and the training module 44 is mounted on the mounting frame 2. The connecting plate 41 is equipped with a first connecting module 42 and a second connecting module 43 for connecting to the training module 44, and the base 1 is equipped with an intensity adjustment module 45 for adjusting the training intensity.

[0035] The first connecting module 42 and the second connecting module 43 are located on both sides of the rotation center of the connecting plate 41, wherein the first connecting module 42 is located on the side of the connecting plate 41 away from the forearm support structure 3, and the second connecting module 43 is located on the side of the connecting plate 41 close to the forearm support structure 3.

[0036] Multiple pads 11 are provided.

[0037] The electrode pads used are the stimulation electrode pads disclosed in Chinese Patent Publication No. CN215960962U.

[0038] In this embodiment, when the standing upper limb rehabilitation exercise device based on the electrical stimulation system is working normally, the patient stands on the pad 11, aligning the elbow joint with the rotation center of the forearm support structure 3. The upper arm is then fixed by the upper support frame 21, and the forearm is fixed and supported by the forearm support structure 3. During use, the patient's upper limb is stimulated by electrode pads to elicit a response. The forearm support structure 3 is connected to the training module 44 via the first connecting module 42 on the connecting plate 41. At this time, the second connecting module 43 is not connected to the training module 44. Thus, through the cooperation of the connecting plate 41, the first connecting module 42, and the training module 44, the force required for the patient to raise and lower the forearm is reduced, making the exercise intensity lower than the force required for the patient to raise the forearm in a free state. This device assists patients in rehabilitation training. It connects to the training module 44 via the second connecting module 43 on the connecting plate 41, while the first connecting module 42 is not connected to the training module 44. Through the cooperation of the connecting plate 41, the second connecting module 43, and the training module 44, the force required for the patient to raise and lower their forearm is increased, making the exercise intensity lower than the force required for the patient to raise their forearm freely, thus increasing the patient's exercise intensity and assisting them in higher-intensity rehabilitation training. Furthermore, through the cooperation of the connecting plate 41, the first connecting module 42, the second connecting module 43, and the training module 44, the device can be adjusted according to the patient's condition, increasing its applicability. During use, the exercise intensity can be changed via the intensity adjustment module 45, further expanding its applicability.

[0039] Example 2: In some embodiments, as a preferred embodiment of the present invention, such as... Figure 3 and Figure 4As shown, the forearm support structure 3 includes a fixed shaft 31, a forearm support frame 32, a support plate 33, and straps 34. The fixed shaft 31 is rotatably mounted on the mounting frame 2 and is fixedly connected to the rear end of the forearm support frame 32. The support plate 33 for supporting the patient's forearm is fixedly mounted on the forearm support frame 32, and straps 34 for fixing the patient's forearm are symmetrically fixedly mounted on the support plate 33. Electrode pads for stimulating the patient's forearm are fixedly mounted on the support plate 33. The connecting plate 41 is fixedly connected to the fixed shaft 31.

[0040] like Figures 2-6 As shown, the training module 44 includes a rotating guide wheel 441, a connecting rope 442, a moving box 444, and a guide assembly. The rotating guide wheel 441 is rotatably mounted on the mounting frame 2, and the guide assembly is mounted on the mounting frame 2. One end of the connecting rope 442 is fixedly mounted on the rotating guide wheel 441, and the other end of the connecting rope 442 passes around the rotating guide wheel 441 and the guide assembly and is fixedly connected to the moving box 444.

[0041] The guiding assembly includes a guide wheel 443 and a guide rail 445. The guide wheel 443 for guiding the connecting rope 442 is rotatably mounted on the mounting frame 2. The guide rail 445 is fixedly mounted on the mounting frame 2. A slider is fixedly mounted on the movable box 444. The movable box 444 is slidably connected to the guide rail 445 through the slider.

[0042] The first connection module 42 includes a locking component and an unlocking component, which are mounted on the connection disk 41;

[0043] The locking assembly includes a locking pin 422, a limiting slide rod 423, and a locking spring 424. The limiting slide rod 423 is slidably connected to the connecting plate 41. The locking pin 422 is fixedly installed on the outer side of the limiting slide rod 423. A locking groove 425 is opened on the inner side of the rotating guide wheel 441, and the locking pin 422 is inserted into the locking groove 425. The locking spring 424 is sleeved on the limiting slide rod 423. One end of the locking spring 424 is fixedly connected to the locking pin 422, and the other end of the locking spring 424 is fixedly connected to the connecting plate 41.

[0044] Multiple locking slots 425 are provided, and the multiple locking slots 425 are evenly distributed in a circular array with equal spacing on the rotating guide wheel 441.

[0045] The unlocking component includes an electromagnetic block 421 and a magnetic block. The electromagnetic block 421 is fixedly installed inside the connecting plate 41, and the magnetic block is fixedly installed inside the locking pin 422.

[0046] The intensity adjustment module 45 includes a fixed box 451, a delivery pump 452, a delivery pipe 454, a limiting wheel 456, and a discharge assembly. The fixed box 451 is fixedly installed on the base 1. The delivery pump 452 is fixedly installed on the fixed box 451. One end of the delivery pipe 454 is connected to the delivery pump 452, and the other end of the delivery pipe 454 is connected to the upper end of the movable box 444. A limiting wheel 456 for limiting the delivery pipe 454 is rotatably installed on the mounting frame 2. A discharge assembly is installed on the lower side of the movable box 444 and on the fixed box 451. The fixed box 451 is connected to the movable box 444 through the delivery pump 452 and the delivery pipe 454. The movable box 444 and the fixed box 451 are filled with liquid.

[0047] The discharge assembly includes a valve 453 and a discharge pipe 455. The valve 453 is fixedly installed on the lower side of the movable box 444. One end of the discharge pipe 455 is fixedly connected to the valve 453, and the other end of the discharge pipe 455 is fixedly connected to the fixed box 451. The movable box 444 is connected to the fixed box 451 through the valve 453 and the discharge pipe 455.

[0048] In this embodiment, the patient's forearm is placed on the support plate 33 and fixed with the strap 34. Initially, the electromagnetic block 421 attracts the locking pin 422 via the magnetic block within the locking pin 422, compressing the locking spring 424. The electromagnetic block 421 is then closed, preventing it from attracting the locking pin 422 via the magnetic block within the locking pin 422. At this point, the locking spring 424 returns to its original position and, under the limiting action of the limiting slide rod 423, drives the locking pin 422 to insert into the locking groove 425 on the guide wheel 443. Then, the second connecting module 43 is operated to... The connecting module 43 does not contact the guide wheel 443; the moving box 444 moves vertically downward under the gravity of the liquid inside the moving box 444 and the limiting action of the guide rail 445, thereby driving the rotating guide wheel 441 to rotate through the connecting rope 442; the rotating guide wheel 441 drives the connecting plate 41 to rotate through the locking pin 422, thereby driving the patient's forearm to move through the fixed shaft 31, support plate 33, forearm support frame 32 and strap 34; until the moving box 444 moves to the bottom of the guide rail 445; then the patient raises their arm, driving the fixed shaft 31, forearm support frame 32 and support plate The forearm support frame 32 rotates, causing the rotating guide wheel 441 to rotate via the connecting plate 41 and locking pin 422, which in turn causes the moving box 444 to move upward via the connecting rope 442; this operation is repeated for exercise; during this process, the connection point between the locking pin 422 and the locking groove 425 on the connecting plate 41 moves away from the fixed shaft 31, so that the force exerted by the moving box 444 on the fixed shaft 31 via the connecting rope 442, rotating guide wheel 441, locking pin 422 and connecting plate 41 is in the same direction as the patient's movement, thereby reducing the force required for the patient to raise their arm; at the same time, while making During use, the height of the initial position of the moving box 444 can be changed by altering the position of the locking pin 422 inserted into the locking slot 425, thereby changing the exercise intensity. In the initial state, the delivery pump 452 delivers the liquid in the fixed box 451 to the moving box 444 through the delivery pipe 454, increasing the total weight of the moving box 444 and the liquid inside, thus increasing the exercise intensity. Opening the valve 453 sends the liquid in the moving box 444 back to the moving box 444 through the discharge pipe 455, reducing the weight of the liquid inside the moving box 444, thus reducing the exercise intensity.

[0049] Example 3: In some embodiments, as a preferred embodiment of the present invention, such as... Figure 5 As shown, the second connection module 43 and the first connection module 42 have the same structure.

[0050] In this embodiment, the connecting plate 41 is connected to the training module 44 via the second connecting module 43. At this time, the electromagnetic block 421 attracts the locking pin 422 through the magnetic block in the locking pin 422, causing the locking pin 422 to disengage from the locking groove 425, and the moving box 444 is compressed. During use, the moving box 444 moves vertically downward under the gravity of the liquid inside the moving box 444 and the limiting action of the guide rail 445, thereby driving the rotating guide wheel 441 to rotate via the connecting rope 442. The rotating guide wheel 441 drives the connecting plate 41 to rotate via the second connecting module 43, thereby driving the patient's forearm to move via the fixed shaft 31, support plate 33, forearm support frame 32 and strap 34 until the moving box 444 is fully moved. 4. Move to the bottom of guide rail 445; then the patient raises their arm, causing the fixed shaft 31, forearm support frame 32, support plate 33 and strap 34 to rotate, thereby driving the rotating guide wheel 441 to rotate through the connecting plate 41 and the second connecting module 43, and then driving the moving box 444 to move upward through the connecting rope 442; repeat this operation for exercise; during this process, the connection point of the second connecting module 43 and the connecting plate 41 is located in the middle of the forearm support frame 32, so that the force exerted by the moving box 444 on the fixed shaft 31 through the connecting rope 442, rotating guide wheel 441, locking pin 422 and connecting plate 41 is opposite to the direction of the patient's movement, thereby increasing the force required for the patient to raise their arm.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A standing upper limb rehabilitation exercise device based on an electrical stimulation system, comprising a base (1), a mounting frame (2), a forearm support structure (3), and stimulation electrode pads, characterized in that, It also includes exercise facilities (4); Mounting frames (2) are fixedly installed on both sides of the base (1); an upper support frame (21) is fixedly installed on the mounting frame (2); a forearm support structure (3) is installed in the middle of the mounting frame (2); an exercise mechanism (4) is installed on the base (1) and the mounting frame (2); stimulation electrode pads are installed on the forearm support structure (3) and the upper support frame (21); The exercise mechanism (4) includes a connecting plate (41), a first connecting module (42), a second connecting module (43), a training module (44), and an intensity adjustment module (45). The connecting plate (41) is connected to the forearm support structure (3), and the training module (44) is installed on the mounting frame (2). The first connecting module (42) and the second connecting module (43) are installed on the connecting plate (41), and the intensity adjustment module (45) is installed on the base (1).

2. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 1, characterized in that, The first connecting module (42) and the second connecting module (43) are located on both sides of the rotation center of the connecting plate (41), wherein the first connecting module (42) is located on the side of the connecting plate (41) away from the forearm support structure (3), and the second connecting module (43) is located on the side of the connecting plate (41) close to the forearm support structure (3).

3. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 1, characterized in that, The forearm support structure (3) includes a fixed shaft (31), a forearm support frame (32), a support plate (33), and a strap (34). The fixed shaft (31) is rotatably mounted on the mounting frame (2). The fixed shaft (31) is fixedly connected to the rear end of the forearm support frame (32). The support plate (33) for supporting the patient's forearm is fixedly mounted on the forearm support frame (32). The strap (34) for fixing the patient's forearm is symmetrically fixedly mounted on the support plate (33). Electrode pads for stimulating the patient's forearm are fixedly mounted on the support plate (33). The connecting plate (41) is fixedly connected to the fixed shaft (31).

4. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 1, characterized in that, The second connection module (43) has the same structure as the first connection module (42).

5. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 1, characterized in that, The training module (44) includes a rotating guide wheel (441), a connecting rope (442), a moving box (444), and a guide assembly. The rotating guide wheel (441) is rotatably mounted on the mounting frame (2), and the guide assembly is mounted on the mounting frame (2). One end of the connecting rope (442) is fixedly mounted on the rotating guide wheel (441), and the other end of the connecting rope (442) passes around the rotating guide wheel (441) and the guide assembly and is fixedly connected to the moving box (444).

6. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 5, characterized in that, The first connection module (42) includes a locking component and an unlocking component, which are mounted on the connection disk (41).

7. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 6, characterized in that, The locking assembly includes a locking pin (422), a limiting slide rod (423), and a locking spring (424). The limiting slide rod (423) is slidably connected to the connecting plate (41). The locking pin (422) is fixedly installed on the outer side of the limiting slide rod (423). A locking groove (425) is opened on the inner side of the rotating guide wheel (441). The locking pin (422) is inserted into the locking groove (425). The locking spring (424) is sleeved on the limiting slide rod (423). One end of the locking spring (424) is fixedly connected to the locking pin (422), and the other end of the locking spring (424) is fixedly connected to the connecting plate (41).

8. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 7, characterized in that, The locking groove (425) is provided in multiple ways, and the multiple locking grooves (425) are evenly distributed in a circular array on the rotating guide wheel (441).

9. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 8, characterized in that, The unlocking component includes an electromagnetic block (421) and a magnetic block. The electromagnetic block (421) is fixedly installed on the inner side of the connecting plate (41), and the magnetic block is fixedly installed inside the locking pin (422).

10. The standing upper limb rehabilitation exercise device based on an electrical stimulation system according to claim 5, characterized in that, The intensity adjustment module (45) includes a fixed box (451), a delivery pump (452), a delivery pipe (454), a limiting wheel (456), and a discharge assembly. The fixed box (451) is fixedly installed on the base (1). The delivery pump (452) is fixedly installed on the fixed box (451). One end of the delivery pipe (454) is connected to the delivery pump (452), and the other end of the delivery pipe (454) is connected to the upper end of the movable box (444). A limiting wheel (456) for limiting the delivery pipe (454) is rotatably installed on the mounting frame (2). A discharge assembly is installed on the lower side of the movable box (444) and on the fixed box (451). The fixed box (451) is connected to the movable box (444) through the delivery pump (452) and the delivery pipe (454). The movable box (444) and the fixed box (451) are filled with liquid.

Images