CN113058256B

CN113058256B - Snowboard with brake device

Info

Publication number: CN113058256B
Application number: CN202110260720.1A
Authority: CN
Inventors: 刘杨洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-12-21
Anticipated expiration: 2041-03-10
Also published as: CN113058256A

Abstract

The invention belongs to the technical field of skiing equipment, in particular to a ski with a braking device, which comprises a ski body, wherein sleeve plates are sleeved on two sides of the ski body in a sliding manner, a position close to the rear side between the two sleeve plates is fixedly connected with a same connecting plate, the front sides of the two sleeve plates and one side opposite to the two sleeve plates are both in a through design, the inner walls of the bottoms and the tops of the sleeve plates are gradually closed from front to back, and a supporting plate is horizontally arranged in each sleeve plate; according to the braking device, when braking is carried out, the snowboard body and the sleeve plate are displaced oppositely along the slope surface direction, the snowboard body slides along the direction parallel to the slope surface at first due to the supporting force of the supporting plate, when the supporting plate is separated from the supporting plate, the snowboard body deflects downwards so that the rear side of the snowboard body is in contact with the slope surface, the braking purpose is achieved, meanwhile, the inclination angle of the snowboard body is reduced when the snowboard body deflects downwards, and the falling of a human body caused by backward inclination is avoided.

Description

Snowboard with brake device

Technical Field

The invention belongs to the technical field of skiing equipment, and particularly relates to a ski with a braking device.

Background

The snowboard is a skiing sports apparatus, generally divided into a mountain board, a cross country board in winter and a single board, a platform board, a free type board, a single board and the like, wherein the single board has higher difficulty in skiing, so that a user is required to have higher skiing skill, and particularly, when braking is carried out, the body of the user needs to be inclined backwards for a certain angle while the single board is rotated by using skill, so that the rear side edge of the snowboard and a slope surface generate scraping action, and the snowboard is braked under the action, and a braking device is arranged on one single board, so that the effect of assisting braking is achieved.

The prior art also discloses snowboard braking devices, such as the one disclosed in chinese patent application No. CN108211323B, which includes a pressing plate, a contact wheel, a pin, a braking rod, a spring, a bolt, a base, a butterfly hinge, a hand braking device, a snowboard main body, a roller, a wheel seat, and a line pressing plate.

However, in the above-mentioned braking method, the brake lever is directly inserted into the snow during the sliding of the snowboard to brake, and in this method, the brake lever needs to be inserted into the snow by pulling the pull cord, and the sliding board is in an inclined state during the actual sliding, and the human body is slightly inclined backwards, so that the distance between the pull cord positioned at the front side of the snowboard and the human hand is larger than the distance between the rear side of the snowboard and the human hand, and further, the pull cord positioned at the rear side of the snowboard cannot completely insert the brake lever into the snow top when the human body pulls the pull cord, so that the human body is more likely to tilt forwards, which is very dangerous.

Therefore, it is necessary to provide a snowboard with a braking device to solve the above problems, which can increase the braking area between the bottom of the snowboard and the slope when braking is required, and simultaneously, can provide a certain supporting effect for the human body, thereby preventing the human body from falling down and improving the safety.

Disclosure of Invention

In view of the above problems, the present invention provides a snowboard with a braking device to solve the above problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a snowboard with a braking device comprises a snowboard body, wherein sleeve plates are sleeved on two sides of the snowboard body in a sliding mode, a connecting plate is fixedly connected between the two sleeve plates and close to the rear side of the two sleeve plates, the front sides of the two sleeve plates and one side, opposite to the two sleeve plates, of the two sleeve plates are both of a through design, the inner walls of the bottoms and the inner walls of the tops of the sleeve plates are gradually drawn close from front to back, a supporting plate is horizontally arranged inside each sleeve plate, two stop blocks are rotatably connected to the front side of the supporting plate, a supporting plate is horizontally arranged at the bottom, close to the rear side of the supporting plate, of the supporting plate and fixedly connected with the inner walls of two adjacent sides of each sleeve plate, a plurality of first telescopic rods are arranged at the bottom of the supporting plate, the front ends and the rear ends of the first telescopic rods are respectively hinged to the inner bottom of the sleeve plates and the bottom of the supporting plate, and first springs are installed in the front end portions of the first telescopic rods;

the rear side of the sleeve plate is provided with a braking device, the braking device comprises a braking plate, the front side of the braking plate is hinged to the rear side of the sleeve plate, the top of the braking plate is provided with a sliding groove, a sliding block is arranged in the sliding groove, the top of the sliding block is hinged to a plurality of pull rods, the top of each pull rod is hinged to the rear side of the sleeve plate, the sliding block slides along the front and rear side direction and penetrates through and is inserted with a plurality of insertion rods, two ends of each insertion rod are fixedly connected with the groove walls of the front and rear sides of the sliding groove respectively, and the part of each insertion rod, which is located on the rear side of the sliding block, is sleeved with a second spring.

Preferably, the bottom of the snowboard body is provided with a supporting device, the supporting device comprises a rotating plate, the width of the rotating plate is equal to the distance between two sleeves, the front side of the rotating plate is hinged to the bottom of the snowboard body, the bottom of the rotating plate is parallel to the bottom of the snowboard body, the distance from the bottom of the rotating plate to the bottom of the snowboard body is equal to the distance from the bottom of the snowboard body to the bottom of the sleeves, the top of the rotating plate inclines downwards from front to back, the top of the rotating plate close to the rear side is hinged to a second telescopic rod, the top of the second telescopic rod is hinged to the bottom of the rotating plate, and a third spring is arranged inside the part of the second telescopic rod hinged to the rotating plate.

Preferably, two the rear side of backup pad has linked firmly same connecting rod, and the connecting rod both ends correspond two of position the spacing groove has all been seted up on the lagging inner wall, and the both ends of connecting rod are located two spacing grooves respectively, the spacing groove includes horizontal segment and slope section, the horizontal segment is corresponding with layer board length, the slope of slope section is the same with the slope of lagging bottom inner wall.

Preferably, the bottom of the brake plate inclines upwards from front to back, a plurality of triangular grooves are formed in the bottom of the brake plate in parallel along the directions of two sides of the brake plate, movable plates are arranged in the triangular grooves, two sides of each movable plate are respectively in rotating connection with the groove walls on two sides of each triangular groove, and the bottom of each movable plate is located outside the triangular groove.

Preferably, the bottom of the rotating plate is fixedly connected with a plurality of strip-shaped bulges, and the front sides of the strip-shaped bulges are designed to be inclined planes.

Preferably, the inner wall of the sleeve plate corresponding to the rear side of the snowboard body and the connecting plate are provided with slots, and the slots are matched with the front side of the snowboard body.

Preferably, the horizontal projection length of the limiting groove is smaller than the maximum shrinkage of the first telescopic rod.

Preferably, the rotation range of the stop block is 0-90 degrees, when the stop block is in a vertical state, the length of the stop block at the top of the support plate is equal to the thickness of the snowboard body, and when the stop block is in a horizontal state, the top height of the stop block is lower than that of the support plate.

The invention has the technical effects and advantages that:

1. according to the braking device, during braking, the friction force of the sleeve plate part is increased, so that the ski body is displaced with the sleeve plate along the slope surface direction, in the process, the ski body slides downwards along the direction parallel to the slope surface due to the supporting force of the supporting plate, when the supporting plate is separated from the supporting plate, the ski body deflects downwards, and the rear side of the ski body can rub against the slope surface, so that the purpose of braking is achieved;

2. according to the invention, the second spring is arranged, when braking is carried out, the brake plate is in contact with the slope surface, and braking deflects upwards under the extrusion of the slope surface, so that the pull rod pushes the sliding block to extrude the second spring, and the brake plate is tightly attached to the slope surface, so that the friction force between the sleeve plate part and the slope surface is increased, meanwhile, as the contact area between the snowboard body and the slope surface is increased by the brake plate, a human body can stand more stably, and meanwhile, the second spring can also reduce the vibration generated by braking, so that the braking effect is improved;

3. according to the invention, the supporting device is arranged, in the braking process, when the rotating plate moves forwards along with the supporting plate and is extruded by the slope, the rotating plate starts to deflect upwards by taking a hinge point of the rotating plate and the ski body as an axial direction, and meanwhile, the second telescopic rod and the third spring start to contract under the pressure, so that the bottom of the rotating plate can be always attached to the slope, the purpose of increasing the friction force between the rotating plate and the slope is achieved, the braking effect is improved, in addition, the third spring can generate an upward supporting force on the supporting plate due to the fact that the third spring is to recover the initial state, and the human body is prevented from falling due to backward tilting in the braking process;

4. according to the invention, the limiting groove is arranged, when the connecting rod moves to the inclined section in the process that the ski body moves along the limiting groove, the connecting rod drives the supporting plate to slide along the inclined section, and meanwhile, the front side of the supporting plate deflects upwards by taking the hinge point of the supporting plate and the first telescopic rod as an axial direction, so that the included angle between the supporting plate and the ski body and the horizontal plane is reduced, the falling down of a human body due to excessive backward tilting is avoided, and the supporting plate can be conveniently restored to the original position along the limiting groove under the action of the first spring.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

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

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

FIG. 4 is a side cross-sectional view of the brake and race plate of the present invention;

FIG. 5 is a side cross-sectional view of a nest plate of the present invention;

fig. 6 is a side view of the support device of the present invention.

In the figure: 1. a snowboard body; 2. sheathing; 3. connecting plates; 4. a support plate; 5. a stopper; 6. a support plate; 7. a first telescopic rod; 8. a first spring; 9. a braking device; 91. a brake plate; 92. a chute; 93. a slider; 94. a pull rod; 95. inserting a rod; 96. a second spring; 10. a support device; 101. rotating the plate; 102. a second telescopic rod; 103. a third spring; 11. a connecting rod; 12. a limiting groove; 121. a horizontal segment; 122. an inclined section; 13. a triangular groove; 14. a movable plate; 15. a strip-shaped bulge; 16. and (4) a slot.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a snowboard with a braking device, which comprises a snowboard body 1, wherein sleeve plates 2 are slidably sleeved on both sides of the snowboard body 1, and the position between the two sleeve plates 2 close to the rear side is fixedly connected with the same connecting plate 3, the front sides of the two sleeve plates 2 and the opposite sides of the two sleeve plates 2 are both in a through design, the inner wall of the bottom and the inner wall of the top of the sleeve plate 2 are gradually drawn together from front to back, a supporting plate 4 is horizontally arranged in the sleeve plate 2, two stop blocks 5 are rotatably connected at the front side of the supporting plate 4, a supporting plate 6 is horizontally arranged at the bottom of the supporting plate 4 close to the rear side, the supporting plate 6 is fixedly connected with the inner walls of two adjacent sides of the sleeve plate 2, the bottom of the supporting plate 4 is provided with a plurality of first telescopic rods 7, the front end and the rear end of the first telescopic rod 7 are respectively hinged with the inner bottom of the sleeve plate 2 and the bottom of the supporting plate 4, and a first spring 8 is arranged in the front end part of the first telescopic rod 7;

the rear side of the sleeve plate 2 is provided with a braking device 9, the braking device 9 comprises a braking plate 91, the front side of the braking plate 91 is hinged to the rear side of the sleeve plate 2, the top of the braking plate 91 is provided with a sliding groove 92, a sliding block 93 is arranged in the sliding groove 92, the top of the sliding block 93 is hinged to a plurality of pull rods 94, the top of each pull rod 94 is hinged to the rear side of the sleeve plate 2, the sliding block 93 is slidably inserted and connected with a plurality of insertion rods 95 along the front and rear side directions, two ends of each insertion rod 95 are fixedly connected with groove walls of the front and rear sides of the sliding groove 92 respectively, and a second spring 96 is sleeved on the part, located on the rear side of the sliding block 93, of each insertion rod 95.

As shown in fig. 1 and 6, the bottom of the snowboard body 1 is provided with a support device 10, the support device 10 comprises a rotating plate 101, the width of the rotating plate 101 is equal to the distance between two sleeve plates 2, the front side of the rotating plate 101 is hinged with the bottom of the snowboard body 1, the bottom of the rotating plate 101 is parallel to the bottom of the snowboard body 1, the distance between the bottom of the rotating plate 101 and the bottom of the snowboard body 1 is equal to the distance between the bottom of the snowboard body 1 and the bottom of the sleeve plates 2, the top of the rotating plate 101 inclines downwards from front to back, the top of the rotating plate 101 close to the rear side is hinged with a second telescopic rod 102, the top of the second telescopic rod 102 is hinged with the bottom of the rotating plate 101, and the part of the second telescopic rod 102 hinged with the rotating plate 101 is internally provided with a third spring 103; in the braking process, when the rotating plate 101 moves forwards along with the supporting plate 4 and is extruded by the slope, the rotating plate 101 deflects upwards by taking a hinge point of the rotating plate 101 and the snowboard body 1 as the axial direction, meanwhile, the second telescopic rod 102 and the third spring 103 begin to contract under the pressure, so that the bottom of the rotating plate 101 can be always attached to the slope, the purpose of increasing the friction force between the rotating plate 101 and the slope is achieved, the braking effect is improved, in addition, the third spring 103 can generate upward supporting force for the supporting plate 4 due to the fact that the initial state is to be restored, and the situation that the human body topples over due to backward tilting in the braking process is avoided.

As shown in fig. 4 and 5, the same connecting rod 11 is fixedly connected to the rear sides of the two supporting plates 4, the inner walls of the two sleeve plates 2 at the positions corresponding to the two ends of the connecting rod 11 are respectively provided with a limiting groove 12, the two ends of the connecting rod 11 are respectively located in the two limiting grooves 12, each limiting groove 12 comprises a horizontal section 121 and an inclined section 122, the horizontal section 121 corresponds to the supporting plate 6 in length, and the slope of the inclined section 122 is the same as that of the inner wall at the bottom of the sleeve plate 2; when braking, the snowboard body 1 pulls the supporting plate 4 and the sleeve plate 2 to move relatively through the stop block 5, at the moment, the connecting rod 11 firstly continues to slide along the horizontal section 121 of the limiting groove 12, in the process, the supporting plate 4 and the sleeve plate 2 are kept relatively parallel, the first telescopic rod 7 is gradually shortened, the connecting rod 11 continues to move along with the supporting plate 4, when the connecting rod 11 moves to the inclined section 122, the connecting rod 11 drives the supporting plate 4 to slide along the inclined section 122, meanwhile, the front side of the supporting plate 4 is enabled to deflect upwards by taking a hinge point of the supporting plate 4 and the first telescopic rod 7 as an axial direction, so that the included angles between the supporting plate 4 and the snowboard body 1 and the horizontal plane are slowed down, the falling down of a human body due to excessive backward tilting is avoided, and the supporting plate 4 can be convenient to restore to the original position along the limiting groove 12 under the action of the first spring 8.

As shown in fig. 4, the bottom of the brake plate 91 is inclined upward from front to back, and a plurality of triangular grooves 13 are formed in the bottom of the brake plate 91 in parallel along directions of two sides of the bottom, a movable plate 14 is arranged in each triangular groove 13, two sides of the movable plate 14 are respectively rotatably connected with groove walls on two sides of the triangular groove 13, and the bottom of the movable plate 14 is located outside the triangular groove 13; when the braking plate 91 contacts with the slope surface, the movable plate 14 at the bottom of the braking plate scrapes against the slope surface under the blocking of the slope surface and deflects towards the triangular groove 13, so that the friction force between the braking plate 91 and the slope surface is increased, the rigid contact between the movable plate 14 and the slope surface is avoided, and the movable plate 14 is protected from being damaged.

As shown in fig. 6, the bottom of the rotating plate 101 is fixedly connected with a plurality of strip-shaped protrusions 15, and the front sides of the strip-shaped protrusions 15 are designed to be inclined planes; when braking is performed, the strip-shaped protrusions 15 can increase the friction between the bottom of the rotating plate 101 and the slope.

As shown in fig. 4 and 5, the inner wall of the sleeve plate 2 and the connecting plate 3 corresponding to the rear side of the snowboard body 1 are provided with slots 16, and the slots 16 are matched with the front side of the snowboard body 1; during skiing, the snowboard body 1 can keep a horizontal state with the bottom of the sleeve plate 2 under the combined action of the slot 16 and the supporting plate 6.

As shown in fig. 4 and 5, the horizontal projection length of the limiting groove 12 is smaller than the maximum contraction amount of the first telescopic rod 7; when the support plate 4 slides to the outside of the sleeve plate 2, the limiting groove 12 can prevent the ski body 1 on the top of the support plate 4 from being separated from the sleeve plate 2, and protect the first spring 8 from being compressed excessively.

As shown in fig. 1, the rotation range of the stop 5 is 0-90 degrees, when the stop 5 is in a vertical state, the length of the stop 5 at the top of the support plate 4 is equal to the thickness of the snowboard body 1, and when the stop 5 is in a horizontal state, the top height is lower than that of the support plate 4; when the snowboard body 1 is inserted into the sleeve plate 2, the snowboard body 1 and the sleeve plate 2 can be connected into a whole by the rotation stop 5.

The working principle is as follows: because the hand brakes are arranged at the positions, close to the two sides, of the top of the existing snowboard with the braking device 9, when the existing snowboard is braked, the hand brakes are pulled to insert the brake rods into the snowfield so as to achieve the braking effect, but the braking mode is to directly insert the brake rods into the snowfield in the sliding process of the snowboard so as to brake, when the braking mode is implemented, the pull ropes are required to be pulled to insert the brake rods into the snowfield, the sliding board is in an inclined state when the snowboard actually slides, and the human body slightly inclines backwards, so that the distance between the pull ropes positioned at the front side of the snowboard and the human hand is larger than the distance between the rear side of the snowboard and the human hand, and further, the pull ropes positioned at the rear side cannot completely insert the brake rods into the snowfield when the pull ropes are pulled by the human body, so that the human body is more easy to tip forwards and is very dangerous, therefore, the invention mainly solves the problem that when the braking is carried out, the braking area between the bottom of the snowboard and the slope surface can be increased, a certain supporting effect is generated on a human body, the human body is prevented from falling, and the safety is improved; the specific measures and the using process are as follows: by arranging the braking device 9, the snowboard body 1 is inserted into the sleeve plate 2 from the front side of the sleeve plate 2 before use, then the stop 5 is rotated by 90 degrees, so that the snowboard body 1 is locked in the sleeve plate 2 under the limit of the stop 5 and is integrated with the supporting plate 4, at the moment, the front side of the snowboard body 1 is inserted into the slot 16, and the supporting plate 4 and the supporting plate 6 are arranged at the bottom of the snowboard body 1 to generate supporting force for the snowboard body. When sliding, because the sliding direction of the snowboard body 1 is the same as the inclined direction of the slope, when a person stands on the top of the snowboard body 1, the snowboard body 1 is subjected to two forces perpendicular to the slope and along the slope, but does not generate forces in the directions of two sides, so that the snowboard body 1 can keep a relatively parallel state with the slope during the sliding process.

During braking, the snowboard body 1 and the sleeve plate 2 are firstly turned by 90 degrees, a human body is inclined backwards, the braking plate 91 is in contact with the slope surface and is braked to deflect upwards under the extrusion of the slope surface, so that the pull rod 94 pushes the sliding block 93 to extrude the second spring 96, the braking plate 91 is tightly attached to the slope surface, and the friction force between the sleeve plate 2 and the slope surface is increased; simultaneously because brake plate 91 has increased the area of contact of ski body 1 with domatic to make the human body can be more steady stand, the second spring 96 can also slow down the vibration that produces because of the braking simultaneously, has improved braking effect.

Because the friction force of the sleeve plate 2 is increased, and the snowboard body 1 is subjected to downward force along the slope, the snowboard body 1 drives the supporting plate 4 to be displaced with the sleeve plate 2 along the slope direction, and in the process, the snowboard body 1 slides downwards along the direction parallel to the slope due to the supporting force of the supporting plate 6; in the process, the first telescopic rod 7 and the first spring 8 are continuously contracted due to pressure, and the reaction force of the first spring 8 on the support plate 4 is larger along with the increase of the relative displacement of the sleeve plate 2 and the snowboard body 1, so that the function of reducing the movement speed of the support plate 4 is realized; when the support plate 4 is separated from the support plate 6, the snowboard body 1 deflects downwards by taking a hinged point of the snowboard body and the first telescopic rod 7 as an axis, so that the rear side of the snowboard body 1 can be in contact with a slope surface, and the aim of braking is fulfilled; meanwhile, the snowboard body 1 deflects downwards, so that the included angle between the snowboard body 1 and the horizontal plane is reduced, and the falling of a human body caused by backward inclination is avoided.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. Snowboard with braking device, comprising a snowboard body (1), characterized in that: the snowboard comprises a snowboard body (1), wherein sleeve plates (2) are sleeved on two sides of the snowboard body (1) in a sliding mode, the position, close to the rear side, of each sleeve plate (2) is fixedly connected with the same connecting plate (3), the front sides of the two sleeve plates (2) and the opposite side of the two sleeve plates (2) are both in a through design, the inner walls of the bottoms and the inner walls of the tops of the sleeve plates (2) are gradually drawn together from front to back, a supporting plate (4) is horizontally arranged in each sleeve plate (2), the front side of each supporting plate (4) is connected with two stop blocks (5) in a rotating mode, a supporting plate (6) is horizontally arranged at the bottom, close to the rear side, of each supporting plate (4), the supporting plate (6) is fixedly connected with the inner walls of the two adjacent sides of the sleeve plates (2), a plurality of first telescopic rods (7) are arranged at the bottom of each supporting plate (4), the front ends and the rear ends of the first telescopic rods (7) are respectively hinged with the bottoms of the sleeve plates (2) and the supporting plates (4), a first spring (8) is arranged in the front end part of the first telescopic rod (7);

the rear side of the sleeve plate (2) is provided with a braking device (9), the braking device (9) comprises a braking plate (91), the front side of the braking plate (91) is hinged to the rear side of the sleeve plate (2), the top of the braking plate (91) is provided with a sliding groove (92), a sliding block (93) is arranged in the sliding groove (92), the top of the sliding block (93) is hinged to a plurality of pull rods (94), the top of each pull rod (94) is hinged to the rear side of the sleeve plate (2), the sliding block (93) slides in the front and rear side directions to penetrate through and be inserted with a plurality of insertion rods (95), two ends of each insertion rod (95) are fixedly connected with the groove walls of the front and rear sides of the sliding groove (92) respectively, and the part, located on the rear side of the sliding block (93), of each insertion rod (95) is sleeved with a second spring (96).

2. A snowboard with braking device as claimed in claim 1, wherein: the bottom of the snowboard body (1) is provided with a supporting device (10), the supporting device (10) comprises a rotating plate (101), the width of the rotating plate (101) is equal to the distance between the two sleeve plates (2), the front side of the rotating plate (101) is hinged with the bottom of the snowboard body (1), the bottom of the rotating plate (101) is parallel to the bottom of the snowboard body (1), and the distance from the bottom of the rotating plate (101) to the bottom of the snowboard body (1) is equal to the distance from the bottom of the snowboard body (1) to the bottom of the sleeve plate (2), the top of the rotating plate (101) is inclined downwards from front to back, and the top of the rotating plate (101) close to the rear side is hinged with a second telescopic rod (102), the top of the second telescopic rod (102) is hinged with the bottom of the rotating plate (101), and a third spring (103) is arranged in the part of the second telescopic rod (102) hinged with the rotating plate (101).

3. A snowboard with braking device as claimed in claim 1, wherein: two the rear side of backup pad (4) has linked firmly same connecting rod (11), and connecting rod (11) both ends correspond two of position sleeve board (2) inner wall has all been seted up spacing groove (12), and the both ends of connecting rod (11) are arranged in two spacing grooves (12) respectively, spacing groove (12) are including horizontal segment (121) and slope section (122), horizontal segment (121) are corresponding with layer board (6) length, the slope of slope section (122) is the same with the slope of sleeve board (2) bottom inner wall.

4. A snowboard with braking device as claimed in claim 1, wherein: the bottom of the brake plate (91) inclines upwards from front to back, a plurality of triangular grooves (13) are formed in the bottom of the brake plate (91) in parallel along the directions of two sides of the brake plate, movable plates (14) are arranged in the triangular grooves (13), two sides of each movable plate (14) are respectively in rotating connection with the groove walls of two sides of each triangular groove (13), and the bottoms of the movable plates (14) are located outside the triangular grooves (13).

5. A snowboard with braking device as claimed in claim 2, wherein: the bottom of the rotating plate (101) is fixedly connected with a plurality of strip-shaped bulges (15), and the front sides of the strip-shaped bulges (15) are designed to be inclined planes.

6. A snowboard with braking device as claimed in claim 1, wherein: the inner wall of the sleeve plate (2) corresponding to the rear side of the snowboard body (1) and the connecting plate (3) are respectively provided with a slot (16), and the slots (16) are matched with the front side of the snowboard body (1).

7. A snowboard with braking device as claimed in claim 3, wherein: the horizontal projection length of the limiting groove (12) is smaller than the maximum contraction quantity of the first telescopic rod (7).

8. A snowboard with braking device as claimed in claim 1, wherein: the rotation range of the stop block (5) is 0-90 degrees, when the stop block (5) is in a vertical state, the length of the stop block (5) positioned at the top of the support plate (4) is equal to the thickness of the snowboard body (1), and when the stop block (5) is in a horizontal state, the top height of the stop block is lower than that of the support plate (4).