CN215193488U - Rehabilitation walking aid for people with walking disorder - Google Patents

Abstract

A rehabilitation walking aid for people with walking disorder belongs to the field of auxiliary rehabilitation of people with walking disorder, and the utility model aims to solve the problem that when a rehabilitee utilizes the walking aid to perform rehabilitation training, both hands of the rehabilitee are occupied and the rehabilitee cannot hold a mobile phone or other mobile devices, the rehabilitation walking aid for people with walking disorder provided by the utility model is provided with a mobile device placing component which can well support the mobile device in the rehabilitation training process of the rehabilitee, a flexible metal tube in the mobile device placing component has the memory characteristic and can freely adjust the placing angle of the mobile device so as to achieve the best viewing angle, and meanwhile, a seat board is provided which can provide a rest area when the rehabilitee is tired in training, thereby effectively relieving the training fatigue and achieving better training effect, when the rehabilitation walking aid is not used, the seat board can be accommodated on one side of the walking aid, the folding and the storage of the walking aid are not affected.

Description

Rehabilitation walking aid for people with walking disorder

Technical Field

The utility model belongs to the supplementary recovered field of walking obstacle personage, concretely relates to recovered capable ware of helping of walking that walking obstacle personage used.

Background

The traditional aid for walking with walking sticks is used when people with inconvenient legs and feet and weak body stand or walk, but there is a significant risk of secondary injury caused by potential unbalance when using the walking sticks, besides the risk of injury, the unbalance may not only cause anxiety of the user, but also endanger the level of general activities that the patient can participate in the health rehabilitation process, if seriously damaged or prolonged significantly in time, further complications may be promoted, which in extreme cases may cause muscular atrophy, so that various walkers are beginning to appear on the market to help people with such needs, but the walkers on the market at present have some disadvantages, the rehabilitation training is a long and boring training, the patient needs quantitative walking training under the condition of physical permission every day in order to recover the ability of standing walking as early as possible, with the continuous development of the information era, many application software on the mobile phone can perform good auxiliary functions on training, such as recording training time and walking distance, and even playing videos and music to increase fun for rehabilitation trainers in boring training, but when the walking aid is used for rehabilitation training, both hands are occupied and the mobile phone or other mobile devices cannot be held, so that the rehabilitation device with the mobile device placing area is very suitable for actual needs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that when a rehabilitee uses the walking aid to perform rehabilitation training, both hands are occupied and cannot hold mobile phones or other mobile devices, thereby providing a rehabilitation walking aid for people with walking disorders;

a rehabilitation walking aid for people with walking disorders comprises a first frame, two handle assemblies, a seat plate, two limiting blocks, a second frame, two overlapping blocks, two folding parts and a mobile equipment placing assembly;

the first frame is of an n-shaped structure, a first telescopic rod is arranged in one supporting leg of the first frame and is connected with the first frame in a sliding mode, a universal wheel is mounted at the bottom of the first telescopic rod, a second telescopic rod is arranged in the other supporting leg of the first frame and is connected with the first frame in a sliding mode, and a positioning rubber block is mounted at the bottom of the second telescopic rod;

the composition structure of the second frame is the same as that of the first frame;

the first frame and the second frame are oppositely arranged and are connected through two folding parts, two limit blocks are arranged on one side, away from the second frame, of the first frame, each limit block is oppositely arranged and is fixedly connected with one supporting leg of the first frame, the seat plate is arranged on the two limit blocks and is in sliding connection with the two limit blocks, two overlapping blocks are arranged on one side, close to the first frame, of the second frame, each overlapping block is fixedly connected with one supporting leg of the second frame, a handle assembly is arranged on the outer side of the supporting leg, provided with the positioning rubber block, of the first frame, another handle assembly is arranged on the outer side of the supporting leg, provided with the positioning rubber block, of the second frame, and a mobile equipment placing assembly is arranged on the outer sides of the supporting legs, provided with universal wheels, of the first frame and the second frame;

furthermore, the folding part comprises a first connecting rod and a second connecting rod which are arranged in an X shape, the first connecting rod and the second connecting rod are hinged through a hinge shaft, one end of the first connecting rod is fixedly connected with the first frame, the other end of the first connecting rod is slidably connected with the second frame, one end of the second connecting rod is fixedly connected with the second frame, and the other end of the second connecting rod is slidably connected with the first frame;

furthermore, the limiting blocks comprise fixing plates and guide cylinders, each fixing plate is fixedly connected with the outer side of one supporting leg in the first frame, one end of each guide cylinder is fixedly connected with the fixing plate, two sides of the seat plate are respectively provided with a guide groove, each guide cylinder is arranged in each guide groove, and the seat plate is in sliding connection with the two limiting blocks through the two guide grooves;

further, the diameter of the end surface of the guide cylinder is smaller than the width of the guide groove;

furthermore, the handle component comprises a supporting block, a vertical handle and a connecting clamping jaw, wherein the connecting clamping jaw is fixedly connected to one side of the supporting block, the connecting clamping jaw is embedded on a supporting leg with a positioning rubber block in the first frame or the second frame, one end of the vertical handle is fixedly connected to the top of the supporting block, an embedding groove is machined in one side, away from the connecting clamping jaw, of the supporting block, a supporting plate is arranged in the embedding groove, the top end of the supporting plate is hinged to the inner wall of the embedding groove, a supporting rod is arranged between the supporting plate and the bottom of the embedding groove, one end of the supporting rod is detachably connected with the supporting plate, and the other end of the supporting rod is detachably connected with the bottom of the embedding groove;

furthermore, the mobile equipment placing component comprises a connecting plate, a fixing plate, a flexible metal pipe, a mobile equipment support and two embedded claws, wherein the two embedded claws are symmetrically arranged along the central line of the length direction of the connecting plate, each embedded claw is fixedly connected with the inner side of the connecting plate, each embedded claw is embedded on a supporting leg with a universal wheel in a first frame or a second frame, the fixing plate is arranged at the center of the inner side of the connecting plate, one end of the flexible metal pipe is fixedly connected with the fixing plate, and the other end of the flexible metal pipe is fixedly connected with the mobile equipment support;

further, the mobile device support includes riser, layer board and two activity limiting plates, the other end of flexible metal pipe and the back fixed connection of riser, the layer board setting is in the bottom of riser, and the upper surface of layer board and the lower fixed surface of riser are connected, and two activity limiting plates set up the both ends at the riser relatively, and every activity limiting plate links to each other through the end wall of two reset spring and riser.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model provides a pair of recovered help capable ware that walking obstacle personage used has the mobile device and places the subassembly and can carry out fine supporting role to the mobile device at the in-process that recovered person carries out the rehabilitation training, and the flexible metal pipe that the mobile device placed in the subassembly has the memory characteristic, the angle that the adjustment mobile device that can be free was placed to in order to reach the best visual angle of watching.

2. The utility model provides a pair of recovered capable ware of helping of walking that walking obstacle personage used has the bedplate and can provide the rest area when recovered person's training is tired out, and the effectual training of alleviating is tired out, reaches better training effect, and when not using, one side of helping the capable ware can be accomodate to the bedplate, does not influence the folding of helping the capable ware of helping to accomodate.

3. The utility model provides a pair of recovered help capable ware that walking obstacle personage used has folding portion, can fold when not using, makes a frame and No. two frames draw together, has practiced thrift and has put the space.

4. The utility model provides a pair of recovered help capable ware that walking obstacle personage used has the backup pad on the handle subassembly wherein, and the backup pad can effectually support recovered person's arm, because recovered person grips the action of handle when the training is a continuation action, the long-time unsettled tired sense that can increase of arm influences the effect of rehabilitation training.

Drawings

FIG. 1 is a front view of the present invention (when the seat plate is not in use);

FIG. 2 is a main sectional view of the present invention (when the seat plate is not in use);

FIG. 3 is a front view of the present invention (when the seat plate is used);

FIG. 4 is a rear view of the present invention (when the seat plate is in use);

FIG. 5 is a side view of the present invention (when the seat plate is not installed);

FIG. 6 is a view from A-A direction of the present invention (when the seat plate is not installed);

fig. 7 is a top view of the mobile device placement assembly of the present invention;

in the figure: the mobile equipment comprises a first frame 1, a handle component 2, a seat plate 3, a first telescopic rod 4, a universal wheel 5, a second telescopic rod 6, a positioning rubber block 7, a limiting block 8, a second frame 9, a lapping block 10, a connecting plate 11, a folding part 12, an embedded claw 13, a fixing sheet 14, a flexible metal pipe 15 and a mobile equipment support 16.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and provides a walking aid for people with walking disorders, which comprises a first frame 1, two handle assemblies 2, a seat plate 3, two limit blocks 8, a second frame 9, two overlapping blocks 10, two folding parts 12 and a mobile device placing assembly;

the first frame 1 is of an n-shaped structure, a first telescopic rod 4 is arranged in one supporting leg of the first frame 1, the first telescopic rod 4 is connected with the first frame 1 in a sliding mode, a universal wheel 5 is arranged at the bottom of the first telescopic rod 4, a second telescopic rod 6 is arranged in the other supporting leg of the first frame 1, the second telescopic rod 6 is connected with the first frame 1 in a sliding mode, and a positioning rubber block 7 is arranged at the bottom of the second telescopic rod 6;

the composition structure of the second frame 9 is the same as that of the first frame 1;

the first frame 1 and the second frame 9 are oppositely arranged, the first frame 1 and the second frame 9 are connected through two folding parts 12, one side of the first frame 1, which is far away from the second frame 9, is provided with two limiting blocks 8, the two limit blocks 8 are oppositely arranged, each limit block 8 is fixedly connected with one supporting leg of the first frame 1, the seat board 3 is arranged on the two limit blocks 8, and bedplate 3 and two 8 sliding connection of stopper, one side that No. two frames 9 are close to No. 1 is equipped with two overlap joint piece 10, every overlap joint piece 10 and No. two landing leg fixed connection of frame 9, a handle subassembly 2 is installed in the landing leg outside that is equipped with location block rubber 7 in frame 1, another handle subassembly 2 is installed in the landing leg outside that is equipped with location block rubber 7 in No. two frames 9, the landing leg outside that is equipped with universal wheel 5 in frame 1 and No. two frames 9 is installed the mobile device and is placed the subassembly.

This embodiment provides a recovered capable ware of helping of walking that walking obstacle personage used, has on this capable ware of helping of moving equipment and places the subassembly and can carry out fine supporting role to the moving equipment at recovered person's in-process that carries out the rehabilitation training, and the flexible metal pipe that the moving equipment placed in the subassembly has the memory characteristic, the angle that the adjustment moving equipment that can be free was placed to reach the best visual angle of watching.

The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and the embodiment further defines the folded portion 12 according to the first embodiment, in the embodiment, the folded portion 12 includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are arranged in an X shape, the first connecting rod and the second connecting rod are hinged through a hinge shaft, one end of the first connecting rod is fixedly connected with the first frame 1, the other end of the first connecting rod is slidably connected with the second frame 9, one end of the second connecting rod is fixedly connected with the second frame 9, and the other end of the second connecting rod is slidably connected with the first frame 1. Other components and connection modes are the same as those of the first embodiment.

In the embodiment, a first vertical chute is processed on one side of each supporting leg in a first frame 1, which faces a second frame 9, a first sliding block is arranged in the first vertical chute, the first sliding block is connected with the first vertical chute in a sliding manner, a second vertical chute is processed on one side of each supporting leg in the second frame 9, which faces the first frame 1, a second sliding block is arranged in the second vertical chute, the second sliding block is connected with the second vertical chute in a sliding manner, one end of a first connecting rod is fixedly connected with the bottom end of the first vertical chute, the other end of the first connecting rod is fixedly connected with the second sliding block, one end of the second connecting rod is fixedly connected with the bottom end of the second vertical chute, the other end of the second connecting rod is fixedly connected with the first sliding block, a folding part 12 formed by arranging the first connecting rod and the second connecting rod in an X shape can adjust the distance between the first frame 1 and the second frame 9, the occupation of land space of helping the capable ware can be practiced thrift when this helps capable ware not uses to be convenient for, has set up spacing draw-in groove on a vertical spout and No. two vertical spouts, can insert in the spacing draw-in groove and establish limit baffle, carries out effectual spacing support to a connecting rod or No. two connecting rods, makes it reach stable supporting effect, guarantees that structural condition can not change when helping the capable ware to use.

The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 7, and the embodiment further defines the limiting block 8 according to the second embodiment, in the embodiment, the limiting block 8 includes a fixing plate and a guide cylinder, each fixing plate is fixedly connected with an outer side of one leg of the first frame 1, one end of the guide cylinder is fixedly connected with the fixing plate, two sides of the seat plate 3 are respectively processed with a guide groove, each guide cylinder is disposed in the guide groove, and the seat plate 3 is slidably connected with the two limiting blocks 8 through the two guide grooves. The other components and the connection mode are the same as those of the second embodiment.

In this embodiment, the guide way sets up with the direction cylinder cooperation on two stopper 8 on the bedplate 3, can make bedplate 3 freely remove on two stopper 8, when needs use, adjust bedplate 3 earlier to the level, again along the extending direction of guide way, the level promotes, until the other end overlap joint on overlap joint piece 10, effectively support bedplate 3 through stopper 8 and overlap joint piece 10, provide the rest area for the recovered person, when not, release overlap joint piece 10 with bedplate 3, and along the extending direction propelling movement of guide way to the walking aid outside, and with bedplate 3 downswing, make bedplate 3 be the one side that vertical state set up at the walking aid, do not influence the folding of walking aid and accomodate.

The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 1 to 7, and the present embodiment further defines the guide cylinder according to the fourth embodiment, and in the present embodiment, the diameter of the end surface of the guide cylinder is smaller than the width of the guide groove. Other components and connection modes are the same as those of the third embodiment.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 7, and the present embodiment further defines the handle assembly 2 according to the fourth embodiment, in the present embodiment, the handle assembly 2 includes a supporting block, a vertical handle and a connecting claw, the connecting claw is fixedly connected to one side of the supporting block, the connecting claw is embedded in a supporting leg with a positioning rubber block 7 in a first frame 1 or a second frame 9, one end of the vertical handle is fixedly connected to the top of the supporting block, an embedding groove is processed on one side of the supporting block away from the connecting claw, a supporting plate is arranged in the embedding groove, the top end of the supporting plate is hinged to the inner wall of the embedding groove, a supporting rod is arranged between the supporting plate and the bottom of the embedding groove, one end of the supporting rod is detachably connected to the supporting plate, and the other end of the supporting rod is detachably connected to the bottom of the embedding groove. The other components and the connection mode are the same as those of the fourth embodiment.

So set up, handle subassembly 2 is through connecting the position of regulation that the jack catch can be free on frame 1 or No. two frame 9, be convenient for satisfy the user crowd of different heights, the triangular support that the supporting shoe outside set up backup pad and bracing piece constitution can effectually effectively support the unsettled arm of recovered person, avoid the long-time unsettled tired sense that can increase of arm, influence rehabilitation training's effect, it has an inclined hole to process respectively on caulking groove tank bottom and the backup pad lower surface, the both ends of bracing piece set up respectively in an inclined hole, play the effect of stable support.

The sixth specific implementation mode: the present embodiment is described with reference to fig. 1 to 7, and is further limited to the mobile device placing assembly according to the fifth embodiment, and in the present embodiment, the mobile device placing assembly includes a connecting plate 11, a fixing plate 14, a flexible metal pipe 15, a mobile device support 16, and two embedded claws 13, the two embedded claws 13 are symmetrically disposed along a center line of the connecting plate 11 in the length direction, and each embedded claw 13 is fixedly connected to the inner side of the connecting plate 11, each embedded claw 13 is embedded in a leg with a universal wheel 5 in a first frame 1 or a second frame 9, the fixing plate 14 is disposed at the center of the inner side of the connecting plate 11, one end of the flexible metal pipe 15 is fixedly connected to the fixing plate 14, and the other end of the flexible metal pipe 15 is fixedly connected to the mobile device support 16. The other components and the connection mode are the same as the fifth embodiment mode.

So set up, the mobile device places the flexible metal pipe in the subassembly and has the memory characteristic, the angle that adjustment mobile device that can be free was placed to in order to reach the best visual angle of watching, two on the connecting plate 11 inlay the dress claw 13 simultaneously and can adjust the position at will on the helps capable ware, clamp at suitable position and fix, also be convenient for use different heights's recovered person and use.

The seventh embodiment: the embodiment is described with reference to fig. 1 to 7, and the embodiment further defines the mobile device support 16 according to a sixth specific embodiment, in the embodiment, the mobile device support 16 includes a vertical plate, a supporting plate and two movable limiting plates, the other end of the flexible metal tube 15 is fixedly connected to the back of the vertical plate, the supporting plate is disposed at the bottom of the vertical plate, the upper surface of the supporting plate is fixedly connected to the lower surface of the vertical plate, the two movable limiting plates are disposed at two ends of the vertical plate, and each movable limiting plate is connected to the end wall of the vertical plate through two return springs. Other components and connection modes are the same as those of the sixth embodiment.

In this embodiment, still be equipped with the guide post in the reset spring that sets up between every activity limiting plate and riser end wall, the one end and the activity limiting plate fixed connection of guide post, processing has the guiding hole on the riser end wall, the other end setting of guide post is in the guiding hole, sliding connection between guide post and the guiding hole, so set up, can be at the mobile device of the different length of centre gripping and size, and guaranteed that the tensile in-process of activity limiting plate is along the horizontal direction motion, the symmetry of two activity limiting plate during operations has been guaranteed, better centre gripping stability has.

The present invention has been disclosed in the above embodiments, but not limited to the present invention, and any person skilled in the art can make some changes or modifications to the equivalent embodiments without departing from the technical scope of the present invention, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments will still belong to the technical scope of the present invention.

Principle of operation

When the utility model is used, firstly, the length of the first frame 1 or the second frame 9 is extended from the first telescopic rod 4 and the second telescopic rod 6 is reasonably adjusted according to the height of a user, so that the walking aid can reach reasonable use height (in the process, the first telescopic rod 4 and the second telescopic rod 6 are positioned with the corresponding support leg through bolts, a plurality of through holes are processed on the outer circular surface of the first telescopic rod 4 and the second telescopic rod 6, positioning holes corresponding to the through holes are processed on the support leg in the first frame 1 or the second frame 9, after the reasonable length is adjusted, the bolts are arranged in the corresponding through holes and positioning holes and are locked through nuts), after the height is adjusted, the handle component 2 is arranged at a reasonable position, the support plate is opened, the support plate is effectively supported through the support rods (the state after the support is shown in figure 1), provides an arm supporting platform for an operator, finally embeds the mobile equipment placing component on the front side of the walking aid, and the mobile equipment support 16 faces the user, and the mobile equipment is embedded on the mobile equipment support 16, the position of the mobile device support 16 can be adjusted by means of the flexible metal tube 15 to achieve an optimal viewing position, which, when rehabilitation is underway, the seat plate 3 can be adjusted to be horizontal, then horizontally pushed along the extending direction of the guide groove until the other end is lapped on the lapping block 10, the seat plate 3 is effectively supported by the limiting block 8 and the lapping block 10 to provide a rest area for the rehabilitation people, when not in use, the seat board 3 is pushed out of the overlapping block 10 and is pushed to the outside of the walking aid along the extending direction of the guide groove, and the seat board 3 swings downwards, so that the seat board 3 is arranged at one side of the walking aid in a vertical state, and the folding and the storage of the walking aid are not influenced.

Claims (7)

1. The utility model provides a recovered helps capable ware that walking obstacle personage used which characterized in that: the rehabilitation walking aid comprises a first frame (1), two handle assemblies (2), a seat plate (3), two limiting blocks (8), a second frame (9), two overlapping blocks (10), two folding parts (12) and a mobile equipment placing assembly;

the first frame (1) is of an n-shaped structure, a first telescopic rod (4) is arranged in one supporting leg of the first frame (1), the first telescopic rod (4) is connected with the first frame (1) in a sliding mode, a universal wheel (5) is installed at the bottom of the first telescopic rod (4), a second telescopic rod (6) is arranged in the other supporting leg of the first frame (1), the second telescopic rod (6) is connected with the first frame (1) in a sliding mode, and a positioning rubber block (7) is installed at the bottom of the second telescopic rod (6);

the composition structure of the second frame (9) is the same as that of the first frame (1);

the first frame (1) and the second frame (9) are arranged oppositely, the first frame (1) and the second frame (9) are connected through two folding parts (12), one side, far away from the second frame (9), of the first frame (1) is provided with two limiting blocks (8), the two limiting blocks (8) are arranged oppositely, each limiting block (8) is fixedly connected with one supporting leg of the first frame (1), the seat plate (3) is arranged on the two limiting blocks (8), the seat plate (3) is connected with the two limiting blocks (8) in a sliding manner, one side, close to the first frame (1), of the second frame (9) is provided with two overlapping blocks (10), each overlapping block (10) is fixedly connected with one supporting leg of the second frame (9), the outer side, provided with the positioning rubber block (7), of the first frame (1) is provided with one handle assembly (2), the outer side, provided with the positioning rubber block (7) of the second frame (9), is provided with the other handle assembly (2), a mobile equipment placing assembly is installed on the outer side of a supporting leg provided with a universal wheel (5) in the first frame (1) and the second frame (9).

2. A rehabilitation walker for walking-impaired persons according to claim 1, characterized in that: folding portion (12) include a connecting rod and No. two connecting rods, and a connecting rod and No. two connecting rods are the X type setting, and it is articulated through the articulated shaft between a connecting rod and No. two connecting rods, the one end and frame (1) fixed connection of a connecting rod, the other end and No. two frames (9) sliding connection of a connecting rod, the one end and No. two frames (9) fixed connection of No. two connecting rods, the other end and frame (1) sliding connection of No. two connecting rods.

3. A rehabilitation walker for walking-impaired persons according to claim 2, characterized in that: stopper (8) are including fixed plate and direction cylinder, a landing leg outside fixed connection in every fixed plate and a frame (1), and direction cylindrical one end and fixed plate fixed connection, the both sides of bedplate (3) have processed a guide way respectively, and every direction cylinder sets up in the guide way, and bedplate (3) are through two guide ways and two stopper (8) sliding connection.

4. A rehabilitation walker for walking-impaired persons according to claim 3, characterized in that: the diameter of the end face of the guide cylinder is smaller than the width of the guide groove.

5. A walking aid for walking impaired persons according to claim 4 wherein: handle subassembly (2) are including the supporting shoe, vertical handle and connection jack catch, one side rigid coupling of supporting shoe has the connection jack catch, the connection jack catch inlays the dress and has the landing leg of location rubber piece (7) in frame (1) or No. two frames (9), the one end rigid coupling of vertical handle is at the top of supporting shoe, one side processing of keeping away from the connection jack catch on the supporting shoe has the caulking groove, be equipped with the backup pad in the caulking groove, the top and the caulking groove inner wall of backup pad are articulated, be equipped with the bracing piece between backup pad and the caulking groove bottom, the one end and the backup pad of bracing piece are dismantled and are connected, the other end and the caulking groove bottom of bracing piece are dismantled and are connected.

6. A walking aid for walking impaired persons according to claim 5 wherein: the mobile equipment placing component comprises a connecting plate (11), a fixing piece (14), a flexible metal pipe (15), a mobile equipment support (16) and two embedded claws (13), wherein the two embedded claws (13) are symmetrically arranged along the central line of the length direction of the connecting plate (11), each embedded claw (13) is fixedly connected with the inner side of the connecting plate (11), each embedded claw (13) is embedded on a supporting leg with a universal wheel (5) in a first frame (1) or a second frame (9), the fixing piece (14) is arranged at the center of the inner side of the connecting plate (11), one end of the flexible metal pipe (15) is fixedly connected with the fixing piece (14), and the other end of the flexible metal pipe (15) is fixedly connected with the mobile equipment support (16).

7. A rehabilitation walker for walking-impaired persons according to claim 6, characterized in that: the mobile device support (16) comprises a vertical plate, a supporting plate and two movable limiting plates, the other end of the flexible metal pipe (15) is fixedly connected with the back of the vertical plate, the supporting plate is arranged at the bottom of the vertical plate, the upper surface of the supporting plate is fixedly connected with the lower surface of the vertical plate, the two movable limiting plates are oppositely arranged at two ends of the vertical plate, and each movable limiting plate is connected with the end wall of the vertical plate through two reset springs.

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