CN113545969A

CN113545969A - Medical treatment is with recovered physiotherapy device of low limbs joint

Info

Publication number: CN113545969A
Application number: CN202110662820.7A
Authority: CN
Inventors: 徐时好; 潘晨翔; 陈芒芒
Original assignee: Wenzhou Central Hospital
Current assignee: Wenzhou Central Hospital
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-10-26

Abstract

The invention discloses a lower limb joint rehabilitation physiotherapy device for medical treatment in the technical field of joint rehabilitation physiotherapy devices, which comprises a physiotherapy device for knee joint rehabilitation arranged on a sickbed, and is characterized in that: the left and right of the physiotherapy device are symmetrically provided with two physiotherapy devices, each physiotherapy device is divided into two parts by the middle part and can be opened by sliding left and right; the sickbed is movably provided with a supporting device for supporting the leg part in front of and behind the physiotherapy device; the invention replaces the traditional massage means depending on doctors, not only saves time and labor, but also has lower price.

Description

Medical treatment is with recovered physiotherapy device of low limbs joint

Technical Field

The invention relates to the technical field of joint rehabilitation physiotherapy devices, in particular to a lower limb joint rehabilitation physiotherapy device for medical treatment.

Background

Physical factor therapy is one of the important methods of joint rehabilitation physiotherapy, among which therapy using mechanical force is massage, manual treatment, traction, exercise, and the like.

However, the traditional manual massage is too time-consuming and labor-consuming, and has certain requirements on the experience of doctors. Since arthrosis is a common disease, the treatment of an experienced doctor is in a state of short supply and short demand, and the corresponding price is high, a mechanical device capable of assisting joint rehabilitation therapy is urgently needed.

Based on the above, the invention designs a medical lower limb joint rehabilitation physiotherapy device to solve the problems.

Disclosure of Invention

In order to solve the above problems, the present invention provides the following technical solutions:

the utility model provides a medical treatment is with recovered physiotherapy device of low limbs joint, is used for the recovered physiotherapy device of knee joint including installing on the sick bed, its characterized in that: the left and right of the physiotherapy device are symmetrically provided with two physiotherapy devices, and each physiotherapy device is divided into two parts by the middle and can be opened in a left-right sliding mode; the sick bed is movably provided with a supporting device for supporting the legs in front of and behind the physiotherapy device.

As a further scheme of the invention, the supporting device comprises a T-shaped sliding rail arranged on a sickbed, a sliding sleeve is connected outside the sliding rail in a sliding manner, a U-shaped supporting ring is arranged above the sliding sleeve, and the supporting ring can move up and down relative to the sliding sleeve through a lifting device; the sliding sleeve is characterized in that a clamping piece is connected in the groove on one side of the sliding sleeve in a sliding mode, one side, close to the sliding rail, of the clamping piece is made of flexible anti-skidding materials, a first screw is rotatably connected to the outer side of the clamping piece, and the first screw is in threaded connection with the sliding sleeve.

As a further scheme of the invention, the lifting device comprises telescopic rods which are arranged at the front side and the rear side of the support ring, and the upper end and the lower end of each telescopic rod are respectively fixedly connected with the support ring and the sliding sleeve; the lifting device further comprises a fork shearing frame mechanism arranged in the middle, the fork shearing frame mechanism comprises four groups of hinged plates and four lifting rods, two ends of each lifting rod are hinged to one group of hinged plates respectively, the hinged plates are connected end to form a diamond shape, the hinged plates on the upper side are fixedly connected with the support ring, the hinged plates on the lower side are fixedly connected with the sliding sleeve, the hinged plates on the right side are rotatably connected with second screws, and the second screws are in threaded connection with the hinged plates on the left side.

As a further scheme of the invention, the physiotherapy device comprises an annular device shell, a plurality of groups of massage pieces are arranged on the circumference of the device shell, and the massage pieces are driven by a power device; the device shell comprises disks on the front side and the rear side and a cylinder positioned between the two disks, the outer wall of the cylinder is uniformly and fixedly connected with a plurality of mounting strips, each mounting strip is provided with a plurality of round holes for mounting massage pieces, and the round holes penetrate through the cylinder; the disc is fixedly connected with the bottom plate through a connecting strip, a strip-shaped groove is formed in the middle of the bottom plate, and a restraint strip in sliding fit with the strip-shaped groove is fixedly connected to the upper end of the sickbed; the left and right device halves are connected by a locking mechanism.

As a further scheme of the invention, the locking mechanism is respectively arranged above and below the front side and the rear side of the device shell, the locking mechanism comprises a locking plate and a lock shell, the locking plate and the lock shell are respectively and fixedly connected with a half device shell, the locking plate is inserted into the lock shell, one end of the locking plate and the upper part of the lock shell are respectively provided with a lock hole, a lock rod is inserted into the lock hole, and a rod cap at the upper end of the lock rod is connected with the lock shell through a first spring.

As a further scheme of the invention, the massage part comprises a massage cylinder and a massage rod, the massage cylinder is connected with the round hole in a sliding manner, a second spring is installed inside the massage cylinder, one end of the massage rod is fixedly connected with one end of the second spring, the massage rod is connected in the massage cylinder in a sliding manner, and one end of the massage rod, far away from the second spring, is a round head; the upper end of the massage cylinder is fixedly connected with a hemispherical cylinder cap, the cylinder cap is connected with the mounting bar through a third spring, and the third spring is sleeved outside the massage cylinder.

As a further scheme of the invention, the power device comprises a power ring positioned on the outer side of the cylinder, two sides of the power ring are rotationally connected with an annular groove on the inner side of the disc, the middle part of the outer side of the power ring is fixedly connected with a gear ring, the gear ring is meshed with a gear, the gear is fixedly connected with an output shaft of a motor, and the motor is arranged at the upper end of a bottom plate; the disc, the cylinder, the gear ring and the power ring are divided into two parts from the middle part, the cylinder cap is in top contact with the inner wall of the power ring, and the inner side of one half power ring is provided with an extrusion mechanism for extruding the cylinder cap.

As a further scheme of the invention, the extrusion mechanism comprises a pressing plate which is positioned on the inner side of the power ring and is hinged with the power ring, one surface of the pressing plate, which is close to the power ring, is fixedly connected with a U-shaped control plate, the power ring is in threaded connection with a third screw, one end of the third screw is rotatably connected with a control rod, the control rod is in sliding connection with a control groove of the control plate, two sides of one end of the control rod, which is close to the control plate, are rotatably connected with control heads, and the diameter of each control head is equal to the distance between the control plate and the pressing plate.

Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

the patient can lie on the sickbed, and put the two legs on the supporting device, at the moment, the physiotherapy device is in an open state, and the two halves of the physiotherapy device can be folded and fixed after the legs are put. The support device can then be adjusted back and forth to support the support device in a more comfortable position on the legs. The height of the support device can then be adjusted so that the knee joint is approximately in the center of the physiotherapy device when the leg is normally relaxed. Finally, the physiotherapy device can be started to massage the knee joint, the traditional massage means depending on doctors is replaced, time and labor are saved, and the price is lower.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the supporting device of the present invention;

FIG. 3 is a schematic view of the physiotherapy apparatus of the present invention;

FIG. 4 is a rear view of the present invention as shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of a physical therapy apparatus in accordance with the present invention;

FIG. 6 is a schematic view of the physiotherapy apparatus of the present invention with the power device hidden;

FIG. 7 is a disassembled view of the massage member of FIG. 6 after it is hidden;

FIG. 8 is a schematic view of a massage member of the present invention;

FIG. 9 is a partial schematic view of an extrusion apparatus of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-hospital bed, 2-physiotherapy device, 3-support device, 4-sliding rail, 5-sliding sleeve, 6-support ring, 7-lifting device, 8-clamping piece, 9-first screw, 10-telescopic rod, 11-hinged plate, 12-lifting rod, 13-second screw, 14-device shell, 15-massage piece, 16-disc, 17-cylinder, 18-mounting bar, 19-round hole, 20-bottom plate, 21-strip groove, 22-restraining bar, 23-locking mechanism, 24-locking plate, 25-locking shell, 26-locking hole, 27-locking bar, 28-first spring, 29-massage cylinder, 30-massage rod, 31-second spring, 32-cylinder cap, 33-third spring, 34-a power ring, 35-an annular groove, 36-a gear ring, 37-a gear, 38-a motor, 39-an extrusion mechanism, 40-a pressure plate, 41-a control plate, 42-a third screw, 43-a control rod, 44-a control groove and 45-a control head.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution:

the utility model provides a medical treatment is with recovered physiotherapy device of low limbs joint, is including installing the physiotherapy device 2 that is used for the knee joint recovery on sick bed 1, its characterized in that: the two physiotherapy devices 2 are arranged in bilateral symmetry, and each physiotherapy device 2 is divided into two parts by the middle part and can be opened in a left-right sliding mode; the sickbed 1 is movably provided with a supporting device 3 used for supporting the legs at the front and the back of the physiotherapy device 2.

The patient can lie on the hospital bed 1 with both legs on the support device 3, the physiotherapy device 2 is in an open state at this time, and the two halves of the physiotherapy device 2 can be folded and fixed after the legs are put. The support means 3 can then be adjusted back and forth so that the support means 3 is supported in a more comfortable position for the legs. The height of the support means 3 can then be adjusted so that the knee joint is approximately in the centre of the physiotherapy apparatus 2 when the leg is normally relaxed. Finally, the physiotherapy device 2 can be started to massage the knee joint, the traditional massage means depending on doctors is replaced, time and labor are saved, and the price is lower.

As an embodiment of the invention, the supporting device 3 comprises a T-shaped sliding rail 4 arranged on the sickbed 1, the sliding rail 4 is connected with a sliding sleeve 5 in a sliding way, a U-shaped supporting ring 6 is arranged above the sliding sleeve 5, and the supporting ring 6 can move up and down relative to the sliding sleeve 5 through a lifting device 7; the groove on one side of the sliding sleeve 5 is internally and slidably connected with a clamping piece 8, one side of the clamping piece 8 close to the sliding rail 4 is made of flexible anti-skidding materials, the outer side of the clamping piece 8 is rotatably connected with a first screw 9, and the first screw 9 is in threaded connection with the sliding sleeve 5.

When in use, the sliding sleeve 5 can be moved back and forth along the sliding rail 4 by hand to adjust the front and back positions of the supporting device 3. After the support device is moved to a proper position, the clamping piece 8 is pushed to the sliding rail 4 along the groove by rotating the first screw 9, and finally the clamping piece 8 is tightly attached to the sliding rail 4 to fix the support device 3.

As an embodiment of the present invention, the lifting device 7 comprises telescopic rods 10 disposed at the front and rear sides of the support ring 6, and the upper and lower ends of the telescopic rods 10 are respectively fixedly connected with the support ring 6 and the sliding sleeve 5; the lifting device 7 further comprises a scissor fork frame mechanism arranged in the middle, the scissor fork frame mechanism comprises four groups of hinged plates 11 and four lifting rods 12, two ends of each of the four lifting rods 12 are hinged to one group of hinged plates 11 respectively, the hinged plates 11 are connected end to form a diamond shape, the hinged plates 11 on the upper side are fixedly connected with the support ring 6, the hinged plates 11 on the lower side are fixedly connected with the sliding sleeve 5, the hinged plates 11 on the right side are rotatably connected with second screws 13, and the second screws 13 are in threaded connection with the hinged plates 11 on the left side.

A specific method for adjusting the height of the support device 3 will be described by taking the height of the support ring 6 as an example. Firstly, the second screw 13 is rotated, the hinge plates 11 on the left side and the right side approach each other, so that the four lifting rods 12 rotate around the hinge plates 11, the distance between the upper hinge plate 11 and the lower hinge plate 11 is gradually increased, and the support ring 6 is lifted; the telescopic rods 10 on two sides can perform constraint reinforcement on the support ring 6.

As an embodiment of the invention, the physiotherapy device 2 comprises an annular device shell 14, a plurality of groups of massage pieces 15 are arranged on the circumference of the device shell 14, and the massage pieces 15 are driven by a power device; the device shell 14 comprises disks 16 at the front side and the rear side and a cylinder 17 positioned between the two disks 16, the outer wall of the cylinder 17 is uniformly and fixedly connected with a plurality of mounting bars 18, each mounting bar 18 is provided with a plurality of round holes 19 for mounting the massage pieces 15, and the round holes 19 penetrate through the cylinder 17; the disc 16 is fixedly connected with a bottom plate 20 through a connecting strip, a strip-shaped groove 21 is formed in the middle of the bottom plate 20, and a restraining strip 22 in sliding fit with the strip-shaped groove 21 is fixedly connected to the upper end of the sickbed 1; the left and right device case halves 14 are connected by a lock mechanism 23.

The power device can squeeze the massage part 15 to massage the knee joint after being started. When it is necessary to open the physiotherapy apparatus 2, the fixing of the two half-apparatus housings 14 is released by the lock mechanism 23, and then the two half-apparatus housings 14 are slid to the left and right along the restriction bars 22. When the two half-units 14 need to be folded, the two half-units 14 can slide towards the center along the restraining strip 22 until the two bottom plates 20 contact each other and the restraining strip 22 also contacts the tail of the strip-shaped groove 21, at this time, the two half-units 14 are fixed through the locking mechanism 23, and then the position of the unit 14 relative to the sickbed 1 is fixed.

As an embodiment of the invention, the locking mechanism 23 is respectively arranged above and below the front side and the rear side of the device shell 14, the locking mechanism 23 comprises a locking plate 24 and a lock shell 25, the locking plate 24 and the lock shell 25 are respectively fixedly connected with a half device shell 14, the locking plate 24 is inserted into the lock shell 25, one end of the locking plate 24 and the upper part of the lock shell 25 are respectively provided with a lock hole 26, a lock rod 27 is inserted into the lock hole 26, and a rod cap at the upper end of the lock rod 27 is connected with the lock shell 25 through a first spring 28.

A method of using the locking mechanism 23 will be described with reference to an example in which the two half device cases 14 are fixed. The lock lever 27 is first pulled upward to elongate the first spring 28, and then the two half device cases 14 are brought close together, and when they are completely fitted, the lock plate 24 is inserted into the lock case 25, the lock lever 27 is released, and the lock lever 27 is inserted into the lock hole 26 by the elastic force of the first spring 28.

As an embodiment of the present invention, the massage component 15 includes a massage cylinder 29 and a massage rod 30, the massage cylinder 29 is slidably connected with the circular hole 19, a second spring 31 is installed inside the massage cylinder 29, one end of the massage rod 30 is fixedly connected with one end of the second spring 31, the massage rod 30 is slidably connected inside the massage cylinder 29, and one end of the massage rod 30 far away from the second spring 31 is a round head; the upper end of the massage cylinder 29 is fixedly connected with a hemispherical cylinder cap 32, the cylinder cap 32 is connected with the mounting bar 18 through a third spring 33, and the third spring 33 is sleeved outside the massage cylinder 29.

As an embodiment of the invention, the power device comprises a power ring 34 positioned outside the cylinder 17, two sides of the power ring 34 are rotatably connected with an annular groove 35 on the inner side of the disc 16, a gear ring 36 is fixedly connected with the middle part of the outer side of the power ring 34, the gear ring 36 is meshed with a gear 37, the gear 37 is fixedly connected with an output shaft of a motor 38, and the motor 38 is arranged at the upper end of a bottom plate 20; the disk 16, the cylinder 17, the gear ring 36 and the power ring 34 are divided into two parts from the middle part, the cylinder cap 32 is in contact with the inner wall of the power ring 34, and the inner side of one half power ring 34 is provided with a squeezing mechanism 39 for squeezing the cylinder cap 32.

As an embodiment of the invention, the squeezing mechanism 39 comprises a pressure plate 40 which is positioned inside the power ring 34 and is hinged with the power ring 34, a U-shaped control plate 41 is fixedly connected to one surface of the pressure plate 40 close to the power ring 34, a third screw 42 is in threaded connection with the power ring 34, one end of the third screw 42 is rotatably connected with a control rod 43, the control rod 43 is in sliding connection with a control groove 44 of the control plate 41, two sides of one end of the control rod 43 close to the control plate 41 are rotatably connected with control heads 45, and the diameter of each control head 45 is equal to the distance between the control plate 41 and the pressure plate 40.

The specific principle of the power device driving the massage member 15 is as follows. The motor 38 is started to drive the gear 37 to rotate, the gear 37 rotates to drive the engaged gear ring 36 to rotate, and the two half gear rings 36 are tightly folded because the two half device shells 14 are tightly folded, so that the engagement between the gear ring 36 and the gear 37 is not influenced. The ring gear 36 rotates to drive the power ring 34 to rotate in the annular groove 35, the power ring 34 drives the pressing plate 40 to rotate synchronously when rotating, when the cylinder cap 32 of the massage component 15 is close to the pressing plate 40, the end, hinged with the power ring 34, of the pressing plate 40 moves to the end far away from the power ring 34, and the inclined pressing plate 40 gradually extrudes towards the center of the physiotherapy device 2.

When the massage member 15 is pressed, the third spring 33 is compressed, i.e., the massage cylinder 29 and the massage rod 30 move simultaneously along the circular hole 19 toward the center of the therapy apparatus 2, during which the massage rod 30 gradually protrudes out of the circular hole 19 and contacts the skin of the knee joint of the patient. The massage component 15 continues to move, the massage rod 30 will be stopped by the knee joint of the person and will not move any more, so that the massage rod 30 will compress the second spring 31 to slide into the massage cylinder 29 at this time, which is equivalent to gradually increasing the massage force.

The angle of the pressure plate 40 can be adjusted, taking the increase of the included angle between the pressure plate 40 and the power ring 34 as an example, the specific method is as follows: the third screw 42 is rotated to make the third screw 42 go deep into the power ring 34, the third screw 42 pushes the control rod 43 to move, the control rod 43 presses the pressing plate 40 through the control head 45, so that the pressing plate 40 further rotates and opens around the hinge point of the pressing plate 40 and the power ring 34, and at this time, the distance between the end of the pressing plate 40, which is not the hinge point, and the power ring 34 is larger, so that the massage part 15 can be further pressed. By adjusting the angle of the pressing plate 40, the massage force can be adjusted for the same patient. For patients with different knee joint development at different ages, the knee joint training device is suitable for more patients and improves the universality.

When the cylinder cap 32 moves to the lowest end of the pressure plate 40, the power ring 34 continues to rotate, the cylinder cap 32 is separated from the pressure plate 40, the massage member 15 is reset under the action of the second spring 31 and the third spring 33, and the cylinder cap 32 continues to be contacted with the power ring 34. During the rotation of the power ring 34, the pressing plate 40 continuously presses different massage members 15 to perform a wrap-around massage of the knee joint.

Claims

1. The utility model provides a medical treatment is with recovered physiotherapy device of low limbs joint, is used for the recovered physiotherapy device of knee joint (2) including installing on sick bed (1), its characterized in that: the left and right of the physiotherapy device (2) are symmetrically provided with two physiotherapy devices, and each physiotherapy device (2) is divided into two parts by the middle and can be opened by sliding left and right; the sickbed (1) is movably provided with a supporting device (3) for supporting legs at the front and the back of the physiotherapy device (2).

2. The physical therapy device for rehabilitation of lower limb joints according to claim 1, characterized in that: the supporting device (3) comprises a T-shaped sliding rail (4) arranged on the sickbed (1), the sliding rail (4) is connected with a sliding sleeve (5) in a sliding mode, a U-shaped supporting ring (6) is arranged above the sliding sleeve (5), and the supporting ring (6) can move up and down relative to the sliding sleeve (5) through a lifting device (7); sliding connection has tight piece (8) of clamp in the recess of sliding sleeve (5) one side, the one side that slide rail (4) are pressed close to tight piece (8) of clamp is flexible anti-skidding material, it is connected with first screw (9) to press from both sides tight piece (8) outside rotation, first screw (9) and sliding sleeve (5) threaded connection.

3. The lower limb joint rehabilitation physiotherapy device for medical use according to claim 2, characterized in that: the lifting device (7) comprises telescopic rods (10) which are arranged on the front side and the rear side of the support ring (6), and the upper end and the lower end of each telescopic rod (10) are respectively fixedly connected with the support ring (6) and the sliding sleeve (5); elevating gear (7) are still including locating the fork mechanism of cutting at the middle part, fork mechanism of cutting includes four articulated slab (11) of group and four lifter (12), and four lifter (12) both ends are articulated with a set of articulated slab (11) respectively to end is the rhombus, articulated slab (11) and support ring (6) fixed connection of upside, articulated slab (11) and sliding sleeve (5) fixed connection of downside, articulated slab (11) on right side rotate and are connected with second screw (13), second screw (13) and left side articulated slab (11) threaded connection.

4. The physical therapy device for rehabilitation of lower limb joints according to claim 1, characterized in that: the physiotherapy device (2) comprises an annular device shell (14), a plurality of groups of massage pieces (15) are arranged on the circumference of the device shell (14), and the massage pieces (15) are driven by a power device; the device shell (14) comprises disks (16) on the front side and the rear side and a cylinder (17) positioned between the two disks (16), the outer wall of the cylinder (17) is uniformly and fixedly connected with a plurality of mounting strips (18), each mounting strip (18) is provided with a plurality of round holes (19) for mounting massage pieces (15), and the round holes (19) penetrate through the cylinder (17); the disc (16) is fixedly connected with a bottom plate (20) through a connecting strip, a strip-shaped groove (21) is formed in the middle of the bottom plate (20), and a restraint strip (22) in sliding fit with the strip-shaped groove (21) is fixedly connected to the upper end of the sickbed (1); the left and right half device cases (14) are connected by a lock mechanism (23).

5. The physical therapy device for rehabilitation of lower limb joints according to claim 4, characterized in that: locking mechanical system (23) respectively are equipped with one in the top and the below of the front and back both sides of device shell (14), locking mechanical system (23) are including jam plate (24) and lock shell (25), jam plate (24) and lock shell (25) respectively with a half device shell (14) fixed connection, jam plate (24) and lock shell (25) are pegged graft, jam plate (24) one end and lock shell (25) upper portion all are equipped with lockhole (26), it has locking lever (27) to peg graft in lockhole (26), the rod cap of locking lever (27) upper end is connected with lock shell (25) through first spring (28).

6. The physical therapy device for rehabilitation of lower limb joints according to claim 4, characterized in that: the massage part (15) comprises a massage cylinder (29) and a massage rod (30), the massage cylinder (29) is connected with the round hole (19) in a sliding mode, a second spring (31) is installed inside the massage cylinder (29), one end of the massage rod (30) is fixedly connected with one end of the second spring (31), the massage rod (30) is connected inside the massage cylinder (29) in a sliding mode, and one end, far away from the second spring (31), of the massage rod (30) is a round head; a hemispherical barrel cap (32) is fixedly connected to the upper end of the massage barrel (29), the barrel cap (32) is connected with the mounting bar (18) through a third spring (33), and the massage barrel (29) is sleeved with the third spring (33).

7. The physical therapy device for rehabilitation of lower limb joints according to claim 6, wherein: the power device comprises a power ring (34) positioned on the outer side of a cylinder (17), two sides of the power ring (34) are rotatably connected with an annular groove (35) on the inner side of a disc (16), the middle part of the outer side of the power ring (34) is fixedly connected with a gear ring (36), the gear ring (36) is meshed with a gear (37), the gear (37) is fixedly connected with an output shaft of a motor (38), and the motor (38) is installed at the upper end of a bottom plate (20); the disc (16), the cylinder (17), the gear ring (36) and the power ring (34) are divided into two parts from the middle, the cylinder cap (32) is in top contact with the inner wall of the power ring (34), and an extrusion mechanism (39) for extruding the cylinder cap (32) is installed on the inner side of one half power ring (34).

8. The physical therapy device for rehabilitation of lower limb joints according to claim 7, characterized in that: extrusion mechanism (39) including being located power ring (34) inboard and with power ring (34) articulated clamp plate (40), clamp plate (40) are close to control panel (41) of one side fixedly connected with U-shaped of power ring (34), power ring (34) threaded connection has third screw (42), third screw (42) one end is rotated and is connected with control lever (43), control lever (43) and control panel (41) control slot (44) sliding connection, control lever (43) are close to the one end both sides rotation of control panel (41) and are connected with control head (45), the diameter of control head (45) equals control panel (41) in the interval of clamp plate (40).