CN111872684A

CN111872684A - Stool leg generation equipment with adjustable pitch-row inclination angle for furniture production

Info

Publication number: CN111872684A
Application number: CN202010727699.7A
Authority: CN
Inventors: 孟晓
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2020-11-03

Abstract

The invention relates to stool leg generation equipment with an adjustable pitch and inclination angle for furniture production, in particular to stool leg generation equipment with an adjustable pitch and inclination angle for furniture production. The technical scheme of the invention is as follows: a stool leg generating device with adjustable pitch and dip angles for furniture production comprises: the base is provided with an adjusting mechanism, the adjusting mechanism is provided with a pressing mechanism, and the pressing mechanism is matched with the adjusting mechanism. The cutting position of the stool leg can be adjusted through the adjusting mechanism, the stool leg can be fixed through the pressing mechanism, and the stool leg can be cut through the cutting mechanism; the distance of punching can conveniently be adjusted through regulation hole interval mechanism, so can conveniently punch to the bench leg of different length, can punch to bench leg department after the cutting through the mechanism of punching, can reduce intensity of labour.

Description

Stool leg generation equipment with adjustable pitch-row inclination angle for furniture production

Technical Field

The invention relates to stool leg generation equipment with an adjustable pitch and inclination angle for furniture production, in particular to stool leg generation equipment with an adjustable pitch and inclination angle for furniture production.

Background

Among seats, furniture stools, campstool, which is the earliest appearing and is the front body of the stool, and the stool is developed into a chair by adding a backrest; the shape of the stool is rich, the stool is rectangular in the early appearance, the stool continues to the Ming dynasty, the stool is square in the Qing dynasty, and the stool is circular, sector-shaped, quincunx, hexagonal and the like in various forms.

Stool leg is before using, need punch to the stool leg, for this installation of convenient follow-up stool, at present when punching the stool leg, it is usually that the workman places the stool leg on current apparatus, cut the stool leg through current apparatus, the workman punches to the stool leg of cutting department through current apparatus afterwards, so workman's intensity of labour is great, and current apparatus when punching the stool leg, the distance that the stool leg punched can not be adjusted, so inconvenient punching to different length stool legs.

Therefore, it is urgently needed to develop a stool leg generating device with adjustable pitch and inclination angle for furniture production, which can reduce labor intensity and adjust punching distance.

Disclosure of Invention

In order to overcome the workman and punch the bench leg of cutting department through current apparatus, workman's intensity of labour is great, and current apparatus can not carry out the shortcoming of adjusting to the distance that the bench leg punched, and the technical problem who solves is: the stool leg generating equipment with the adjustable pitch and inclination angle for furniture production can reduce labor intensity and adjust the pitch and inclination angle of the punched hole.

The technical scheme of the invention is as follows: a stool leg generating device with adjustable pitch and dip angles for furniture production comprises: the device comprises a base, wherein an adjusting mechanism is arranged on the base, a pressing mechanism is arranged on the adjusting mechanism, and the pressing mechanism is matched with the adjusting mechanism; the cutting mechanism is installed on one side, close to the adjusting mechanism, of the base, the punching mechanism is installed on one side, close to the cutting mechanism, of the base, the hole punching mechanism is provided with the hole adjusting spacing mechanism, and the hole punching mechanism is matched with the hole adjusting spacing mechanism.

In one embodiment, the adjusting mechanism comprises: two sliding rails are arranged and are both arranged at the top of the base, a sliding seat is arranged between the two sliding rails in a sliding manner, and a moving rod is fixedly connected to the side wall of the sliding seat; the mounting frame is arranged in the sliding seat and fixedly connected with a limiting plate, a first screw is arranged on one side, far away from the limiting plate, of the mounting frame, and a first rotary table is fixed on the first screw; the first nut is arranged on the first screw rod in a threaded connection mode, the first nut is arranged in the mounting frame in a sliding mode, four connecting rods are fixedly connected to the side wall of the first nut, a fixing plate is connected between the four connecting rods, a groove plate is arranged on the fixing plate and is arranged in the sliding seat in a sliding mode, a sliding shaft is arranged in the groove plate in a sliding mode, a connecting block is fixedly connected to the sliding shaft, a hinged plate is rotatably connected to the side wall of the connecting block, and the hinged plate is rotatably connected with the limiting plate; the fixed block is connected on the base and close to one side of the slide rail on one side, and a positioning block is arranged on the fixed block and matched with the slide seat.

In one embodiment, the pressing mechanism comprises: the connecting frame is arranged on one side, close to the limiting plate, of the mounting frame, and the air cylinder is arranged on the connecting frame through a bolt; and the pressing block is fixedly connected to the bottom end of the telescopic rod of the cylinder.

In one embodiment, the cutting mechanism comprises: the fixing frame is connected to one side, close to the sliding seat, of the base, and a servo motor is installed on the fixing frame through a bolt; and the cutting knife is arranged on an output shaft of the servo motor.

In one embodiment, the punching mechanism comprises: the installation frame is arranged on one side, far away from the sliding seat, of the base, two guide rails are fixedly connected in the installation frame, a guide seat is slidably arranged between the two guide rails, and two first springs are fixedly connected between the guide seat and the installation frame; the fixed frame is arranged at the top of the guide seat, a sliding plate is fixedly connected to the bottom of the fixed frame, two sliding sleeves are slidably arranged on the sliding plate, two second springs are fixedly connected between the two sliding sleeves, a speed reducing motor is mounted on the sliding sleeves through bolts, a punching rod is mounted on an output shaft of the speed reducing motor, and the punching rod penetrates through the fixed frame.

In one embodiment, the mechanism for adjusting the distance between the holes comprises: two third belt wheels are respectively arranged on one side, close to the punching rods, of the output shaft of the speed reducing motor, a second belt is arranged between the two third belt wheels, and an L-shaped frame is arranged on the side wall of the fixing frame between the two punching rods; the second screw rod sets up in L shape frame through threaded connection's mode, installs the second carousel on the second screw rod, and one side of keeping away from the second carousel on the second screw rod is equipped with the second nut through threaded connection's mode, and the rigid coupling has contact block on the lateral wall of second nut, and contact block is located between two third band pulleys, and contact block and second belt contact.

In one embodiment, the method further comprises the following steps: the side wall of the mounting frame is provided with a sliding groove, the side wall of the guide seat is provided with a support rod, and the outside of the support rod is provided with a limiting block; the swing hole plate is connected to one side, close to the limiting block, of the support rod, a positioning pin is fixedly connected to the base on the lower side of the sliding groove, the positioning pin is located in the swing hole plate in a sliding mode, and a pedal is rotatably mounted on one side, far away from the positioning pin, of the swing hole plate; the transverse plate is arranged on one side, close to the supporting rod, of the guide seat, and two contact rods are arranged on the transverse plate.

The beneficial effects are that:

1. the cutting position of the stool leg can be adjusted through the adjusting mechanism, the stool leg can be fixed through the pressing mechanism, and the stool leg can be cut through the cutting mechanism;

2. the punching distance can be conveniently adjusted through the hole spacing adjusting mechanism, so that the stool legs with different lengths can be conveniently punched, and the punched stool legs can be punched through the punching mechanism, so that the labor intensity can be reduced;

3. can carry on spacingly to the degree of depth of punching through the contact lever, through locating pin and swing orifice plate cooperation, so can conveniently make the mechanism of punching punch to the bench leg department after the cutting.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the adjusting mechanism of the present invention.

Fig. 3 is a schematic perspective view of a portion of the adjusting mechanism of the present invention.

Fig. 4 is a schematic perspective view of the pressing mechanism of the present invention.

Fig. 5 is a schematic perspective view of the cutting mechanism of the present invention.

Fig. 6 is a schematic perspective view of the hole punching mechanism of the present invention.

Fig. 7 is a schematic perspective view of a part of the punching mechanism of the present invention.

Fig. 8 is a schematic perspective view of the mechanism for adjusting the hole pitch according to the present invention.

In the reference symbols: a base, 2.. an adjusting mechanism, 21.. a slide rail, 22.. a sliding seat, 23.. a moving rod, 24.. a mounting frame, 25.. a limiting plate, 26.. a first screw rod, 27.. a first rotary disc, 28.. a first nut, 29.. a connecting rod, 210.. a fixing plate, 211.. a groove plate, 212.. a sliding shaft, 213.. a connecting block, 214.. a hinge plate, 215.. a fixing block, 216.. a positioning block, 3.. a pressing mechanism, 31.. a connecting frame, 32.. an air cylinder, 33.. a pressing block, 4.. a cutting mechanism, 41.. a fixing frame, 42.. a servo motor, 43.. a cutting knife, 5.. a punching mechanism, 51.. a mounting frame, 52.. a guide rail, 53.. a fixing frame, 55.. a spring guide seat, 56... a slide plate, 57.. a slide sleeve, 571.. a second spring, 58.. a reduction motor, 59.. a punching rod, 6.. an adjusting hole spacing mechanism, 61.. a third belt wheel, 62.. a second belt, 63.. an L-shaped frame, 64.. a second screw rod, 65.. a second rotary table, 66.. a second nut, 67.. a contact block, 7.. a sliding chute, 8.. a supporting rod, 81.. a limiting block, 9.. a swinging orifice plate, 10.. a positioning pin, 11.. a pedal, 12.. a transverse plate, 13.. a contact rod.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

The utility model provides a furniture production is with bench leg at adjustable pitch-row inclination generates equipment, as shown in FIG. 1, including base 1, adjustment mechanism 2, hold-down mechanism 3, cutting mechanism 4, mechanism 5 and regulation hole interval mechanism 6 punch, adjustment mechanism 2 is installed on the right side at 1 top of base, install hold-down mechanism 3 on the adjustment mechanism 2, hold-down mechanism 3 and the cooperation of adjustment mechanism 2, base 1's rear side left part rigid coupling has cutting mechanism 4, mechanism 5 punches is installed in the left side at 1 top of base, it is provided with regulation hole interval mechanism 6 on the mechanism 5 to punch, mechanism 5 and the cooperation of regulation hole interval mechanism 6 punch.

When needs add man-hour to the bench leg, the user places the bench leg on adjustment mechanism 2 after, the user adjusts the cutting department of bench leg through adjustment mechanism 2, the user fixes the bench leg through hold-down mechanism 3 afterwards, then the user makes the bench leg remove backward through adjustment mechanism 2, can cut the bench leg of backward movement through cutting mechanism 4, after the cutting of bench leg is accomplished, the user removes the bench leg forward and resets, the user adjusts the distance between punching through regulation hole interval mechanism 6 again, then the user punches to the bench leg department after the cutting through punching mechanism 5 afterwards, punch the completion back when the bench leg, the user removes the fixed to the bench leg through hold-down mechanism 3, the user will punch afterwards the bench leg after can, so can reduce intensity of labour, and can conveniently adjust the distance of punching.

Example 2

On the basis of embodiment 1, as shown in fig. 1, 2 and 3, the adjusting mechanism 2 includes two slide rails 21, two slide seats 22, two moving rods 23, two mounting brackets 24, two limit plates 25, a first screw 26, a first rotating disk 27, a first nut 28, a connecting rod 29, a fixed plate 210, a trough plate 211, a slide shaft 212, a connecting block 213, a hinge plate 214, a fixed block 215 and a positioning block 216, the two slide rails 21 are both installed on the right side of the top of the base 1, the slide seat 22 is slidably installed between the two slide rails 21, the moving rod 23 is fixedly connected to the front portion of the left side wall of the slide seat 22, the mounting bracket 24 is connected to the slide seat 22, the limit plates 25 are fixedly connected to the mounting bracket 24, the first screw 26 is installed on the mounting bracket 24 in front of the limit plates 25, the first rotating disk 27 is installed at the front end of the first screw 26, the first nut 28 is installed at, first nut 28 is slidingly arranged in mounting bracket 24, four connecting rods 29 are fixedly connected to the rear side wall of first nut 28, a fixing plate 210 is connected between the rear ends of four connecting rods 29, a groove plate 211 is fixedly connected to the top of fixing plate 210, groove plate 211 is slidingly arranged in sliding seat 22, sliding shaft 212 is slidingly arranged in groove plate 211, connecting block 213 is fixed to the rear end of sliding shaft 212, hinged plate 214 is rotatably connected to the side wall of connecting block 213, hinged plate 214 is rotatably connected with limiting plate 25, fixing block 215 is installed on base 1 in front of left side slide rail 21, positioning block 216 is arranged on fixing block 215, and positioning block 216 is matched with sliding seat 22.

When the bench legs are needed to be processed, a user puts the bench legs on the mounting frame 24 between the limiting plate 25 and the groove plate 211, then the user rotates the first screw 26 clockwise through the first rotating disc 27, the first screw 26 rotates clockwise to enable the first nut 28 to move forward in the mounting frame 24, the first nut 28 moves forward to drive the part on the first nut to move forward, so that the groove plate 211 can move forward in the sliding seat 22, through the matching of the sliding shaft 212 and the connecting block 213, the groove plate 211 moves forward to enable the hinge plate 214 to swing leftward, the hinge plate 214 swings leftward to enable the front part of the bench legs to swing leftward, so that the inclination angle of the bench legs can be adjusted, thereby the cutting position of the bench legs can be adjusted, after the bench legs are adjusted, the user fixes and limits the bench legs through the pressing mechanism 3, then the user moves the sliding seat 22 backward through the moving rod 23, the sliding seat 22 moves backwards to enable the part on the sliding seat to move backwards, the stool legs move backwards accordingly, the stool legs move backwards to be matched with the cutting mechanism 4, the stool legs can be cut, after the stool legs are cut, a user moves the sliding seat 22 forwards to reset, the sliding seat 22 can move forwards to be limited through the positioning block 216, and then the user punches holes in the cut stool legs through the punching mechanism 5.

Example 3

On the basis of embodiment 2, as shown in fig. 1, 2 and 4, the pressing mechanism 3 includes a connecting frame 31, a cylinder 32 and a pressing block 33, the connecting frame 31 is fixedly connected to the mounting frame 24 at the rear side of the limiting plate 25, the cylinder 32 is mounted on the connecting frame 31, an expansion link of the cylinder 32 penetrates through the connecting frame 31, and the pressing block 33 is fixed at the bottom end of the expansion link of the cylinder 32.

After the bench leg is adjusted and is accomplished, the user starts cylinder 32 and makes compact heap 33 downstream, and compact heap 33 downstream can be fixed the bench leg, so can prevent to add man-hour to the bench leg, and the bench leg removes and causes inconvenience for processing, and after bench leg processing was accomplished, the user started cylinder 32 and makes compact heap 33 move upwards reset and close, so can relieve the fixed to the bench leg.

As shown in fig. 1 and 5, the cutting mechanism 4 includes a fixing frame 41, a servo motor 42 and a cutting knife 43, the fixing frame 41 is installed at the left portion of the rear side wall of the base 1, the servo motor 42 is arranged on the fixing frame 41, an output shaft of the servo motor 42 penetrates through the fixing frame 41, and the cutting knife 43 is installed on the output shaft of the servo motor 42.

When needs cut the bench leg, the user starts servo motor 42 and makes cutting knife 43 rotate, user's repeated above-mentioned operation makes the bench leg remove backward afterwards, the bench leg removes backward and cooperates with cutting knife 43, so can cut the bench leg, after the bench leg cutting is accomplished, the user repeated above-mentioned operation makes the bench leg after the cutting remove forward reset can, then the user repeated above-mentioned operation punch the bench leg after the cutting can, after the whole processing of bench leg is accomplished, the user closes servo motor 42.

Example 4

In addition to embodiment 3, as shown in fig. 1, 6 and 7, the punching mechanism 5 includes a mounting frame 51, a guide rail 52, a guide seat 53, a first spring 54, a fixed frame 55, a sliding plate 56, sliding sleeves 57, a second spring 571, a reduction motor 58 and a punching rod 59, the mounting frame 51 is disposed on the left side of the top of the base 1, two guide rails 52 are fixedly connected to the rear side of the bottom in the mounting frame 51, the guide seat 53 is slidably disposed between the two guide rails 52, two first springs 54 are fixedly connected between the left side wall of the guide seat 53 and the mounting frame 51, the fixed frame 55 is fixedly connected to the right side of the top of the guide seat 53, the sliding plate 56 is fixedly connected to the bottom in the fixed frame 55, two sliding sleeves 57 are slidably disposed on the sliding plate 56, two second springs 571 are connected between the two sliding sleeves 57, the reduction motor 58 is mounted on the top of the sliding sleeves 57, the punching rod 59, the punching rod 59 penetrates the fixing frame 55.

When the bench legs need to be punched, the user starts the speed reducing motor 58 to enable the punching rod 59 to rotate, then the user moves the guide seat 53 rightwards, the first spring 54 is stretched accordingly, the guide seat 53 rightwards moves to enable the part on the guide seat 53 to move rightwards, the punching rod 59 moves rightwards and rotates to punch the cut bench legs, after punching of the cut bench legs is completed, the user loosens the guide seat 53, the guide seat 53 can move leftwards to reset under the action of the elastic force of the first spring 54, and after all bench legs are machined, the user closes the speed reducing motor 58.

As shown in fig. 1 and 8, the hole pitch adjusting mechanism 6 includes a third belt pulley 61, a second belt 62, an L-shaped frame 63, a second screw 64, a second rotating disc 65, a second nut 66 and a contact block 67, the third belt pulley 61 is mounted on an output shaft of the reduction motor 58, the third belt pulley 61 is located on the left side of the punching rod 59, the second belt 62 is disposed between the two third belt pulleys 61, the L-shaped frame 63 is embedded in the middle of the right side wall of the fixing frame 55, the second screw 64 is disposed on the L-shaped frame 63 in a threaded connection manner, the second rotating disc 65 is mounted at the top end of the second screw 64, the second nut 66 is disposed at the lower part of the second screw 64, the contact block 67 is fixedly connected to the left side wall of the second nut 66, the contact block 67 is located between the two third belt pulleys 61, and the contact block 67 is in contact with the second belt 62.

Before the stool legs need to be punched, the user rotates the second screw 64 clockwise through the second turntable 65, the second nut 66 moves upwards along with the second screw, the second nut 66 moves upwards to enable the contact block 67 to move upwards, the contact block 67 moves upwards to pull the second belt 62, so that the front and rear third belt wheels 61 are close together, the front and rear third belt wheels 61 are close together to enable the front and rear reduction motors 58 to be close together, the second spring 571 is compressed along with the second nut, the front and rear punching rods 59 are close together along with the contact block, so that the punching distance can be adjusted, after the front and rear punching rods 59 move to proper positions, the user stops rotating the second turntable 65, so that the stool legs with different lengths can be conveniently machined, after all the stool legs are machined, the user rotates the second screw 64 counterclockwise through the second turntable 65, so that the contact block 67 moves downwards, after the contact block 67 moves downward and resets, the user stops rotating the second rotating disc 65, and the deceleration motors 58 at the front and rear sides are away from each other and reset under the action of the elastic force of the second spring 571, so that the stool legs can be conveniently processed next time.

Example 5

On the basis of embodiment 4, as shown in fig. 1 and fig. 6, the utility model further includes a supporting rod 8, a limiting block 81, swing orifice plate 9, locating pin 10, pedal 11, diaphragm 12 and contact lever 13, open the front side wall left part of installing frame 51 has spout 7, the front side wall left part rigid coupling of guide holder 53 has branch 8, the front portion of branch 8 passes spout 7, the limiting block 81 is installed to the front side of branch 8, limiting block 81 is located the front side of installing frame 51, be provided with swing orifice plate 9 on the branch 8 of limiting block 81 front side, the rigid coupling has locating pin 10 on the base 1 of spout 7 downside, locating pin 10 slidingtype is located swing orifice plate 9, pedal 11 is installed to the lower part rotary type of swing orifice plate 9, be connected with diaphragm 12 on the guide holder 53 on the right side of branch 8, install two contact levers 13 on diaphragm 12.

When the cut bench legs need to be punched, the user swings the pedals 11 leftwards, the supporting rods 8 can be moved rightwards through the matching of the swing hole plates 9 and the positioning pins 10, the guiding seats 53 can be moved rightwards through the rightward movement of the supporting rods 8, the first springs 54 are stretched accordingly, the positions of the guiding seats 53 moving rightwards can be limited through the contact rods 13, after the punched bench legs after being cut are finished, the user loosens the pedals 11, the guiding seats 53 can be moved leftwards to reset under the action of the first springs 54, the pedals 11 can be swung to reset, and the cut bench legs can be punched next time conveniently.

The above description is only an example of the present invention and is not intended to limit the present invention. All equivalents which come within the spirit of the invention are therefore intended to be embraced therein. Details not described herein are well within the skill of those in the art.

Claims

1. A stool leg generation device with adjustable pitch and inclination angle for furniture production is characterized by comprising:

the device comprises a base, wherein an adjusting mechanism is arranged on the base, a pressing mechanism is arranged on the adjusting mechanism, and the pressing mechanism is matched with the adjusting mechanism;

the cutting mechanism is installed on one side, close to the adjusting mechanism, of the base, the punching mechanism is installed on one side, close to the cutting mechanism, of the base, the hole punching mechanism is provided with the hole adjusting spacing mechanism, and the hole punching mechanism is matched with the hole adjusting spacing mechanism.

2. The apparatus of claim 1, wherein the adjusting mechanism comprises:

two sliding rails are arranged and are both arranged at the top of the base, a sliding seat is arranged between the two sliding rails in a sliding manner, and a moving rod is fixedly connected to the side wall of the sliding seat;

the mounting frame is arranged in the sliding seat and fixedly connected with a limiting plate, a first screw is arranged on one side, far away from the limiting plate, of the mounting frame, and a first rotary table is fixed on the first screw;

the first nut is arranged on the first screw rod in a threaded connection mode, the first nut is arranged in the mounting frame in a sliding mode, four connecting rods are fixedly connected to the side wall of the first nut, a fixing plate is connected between the four connecting rods, a groove plate is arranged on the fixing plate and is arranged in the sliding seat in a sliding mode, a sliding shaft is arranged in the groove plate in a sliding mode, a connecting block is fixedly connected to the sliding shaft, a hinged plate is rotatably connected to the side wall of the connecting block, and the hinged plate is rotatably connected with the limiting plate;

the fixed block is connected on the base and close to one side of the slide rail on one side, and a positioning block is arranged on the fixed block and matched with the slide seat.

3. The adjustable pitch tilt bench leg forming apparatus of claim 2, wherein the pressing mechanism comprises:

the connecting frame is arranged on one side, close to the limiting plate, of the mounting frame, and the air cylinder is arranged on the connecting frame through a bolt; and the pressing block is fixedly connected to the bottom end of the telescopic rod of the cylinder.

4. The adjustable pitch tilt bench leg generating apparatus of claim 3, wherein the cutting mechanism comprises:

the fixing frame is connected to one side, close to the sliding seat, of the base, and a servo motor is installed on the fixing frame through a bolt;

and the cutting knife is arranged on an output shaft of the servo motor.

5. The adjustable pitch tilt bench leg generating apparatus of claim 4, wherein the hole punch mechanism comprises:

the installation frame is arranged on one side, far away from the sliding seat, of the base, two guide rails are fixedly connected in the installation frame, a guide seat is slidably arranged between the two guide rails, and two first springs are fixedly connected between the guide seat and the installation frame;

the fixed frame is arranged at the top of the guide seat, a sliding plate is fixedly connected to the bottom of the fixed frame, two sliding sleeves are slidably arranged on the sliding plate, two second springs are fixedly connected between the two sliding sleeves, a speed reducing motor is mounted on the sliding sleeves through bolts, a punching rod is mounted on an output shaft of the speed reducing motor, and the punching rod penetrates through the fixed frame.

6. The apparatus of claim 5, wherein the means for adjusting the pitch angle of the stool legs comprises:

two third belt wheels are respectively arranged on one side, close to the punching rods, of the output shaft of the speed reducing motor, a second belt is arranged between the two third belt wheels, and an L-shaped frame is arranged on the side wall of the fixing frame between the two punching rods;

the second screw rod sets up in L shape frame through threaded connection's mode, installs the second carousel on the second screw rod, and one side of keeping away from the second carousel on the second screw rod is equipped with the second nut through threaded connection's mode, and the rigid coupling has contact block on the lateral wall of second nut, and contact block is located between two third band pulleys, and contact block and second belt contact.

7. The apparatus of claim 6, further comprising:

the side wall of the mounting frame is provided with a sliding groove, the side wall of the guide seat is provided with a support rod, and the outside of the support rod is provided with a limiting block;

the swing hole plate is connected to one side, close to the limiting block, of the support rod, a positioning pin is fixedly connected to the base on the lower side of the sliding groove, the positioning pin is located in the swing hole plate in a sliding mode, and a pedal is rotatably mounted on one side, far away from the positioning pin, of the swing hole plate;

the transverse plate is arranged on one side, close to the supporting rod, of the guide seat, and two contact rods are arranged on the transverse plate.