CN113750505A

CN113750505A - But automatic service robot of table tennis of angle regulation's adaptation sportsman's use

Info

Publication number: CN113750505A
Application number: CN202111228131.1A
Authority: CN
Inventors: 孙永
Original assignee: Jilin Normal University
Current assignee: Jilin Normal University
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2021-12-07
Anticipated expiration: 2041-10-21
Also published as: CN113750505B

Abstract

The invention relates to the technical field of sports training equipment, in particular to an angle-adjustable automatic table tennis serving machine which can be adapted to players. It includes the service device, and the service device includes at least: the fixing body comprises a fixing plate, the fixing plate is provided with a bottom body, the bottom body is connected with a top body, and the top body is provided with an intermediate body; the power of the power. The invention mainly provides a table tennis ball serving machine which can be matched with players of different body types, can adjust serving angles and has a good training effect.

Description

But automatic service robot of table tennis of angle regulation's adaptation sportsman's use

Technical Field

The invention relates to the technical field of sports training equipment, in particular to an angle-adjustable automatic table tennis serving machine which can be adapted to players.

Background

Table tennis service robot is the indispensable amusement and the training instrument of many stadiums and the friend family, be applicable to the society, school, the family, the use of professional training stadium, both can be used to the amusement body-building, be suitable for the professional training again, current table tennis service robot highly fixed can't adjust, the user of the various sizes of unable fine confession uses, and the service robot can only launch the table tennis to a direction, multidirectional launch table tennis that can not be nimble, make the training effect relatively poor, consequently, need the various size sportsman's of adaptation table tennis service robot of an adjustable angle table tennis service robot.

Disclosure of Invention

The invention aims to provide an angle-adjustable table tennis automatic serving machine which can be adapted to players to use, so as to solve the problems in the background technology.

In order to achieve the above object, the present invention provides an angle-adjustable table tennis automatic serving machine adapted to a player, including a serving device, the serving device at least including:

the fixing body comprises a fixing plate, a bottom body is arranged in the middle of the upper surface of the top of the fixing plate, four corners of the upper surface of the top of the bottom body are provided with cylindrical structure grooves, the top of the bottom body is connected with a top body, four corners of the bottom of the top body are provided with cylinders which are in plug fit with the bottom body, and the top of the top body is provided with a middle body;

the power storage type ball serving device comprises a ball serving body, wherein the ball serving body comprises a ball serving frame, the bottom of the ball serving frame is connected with the top of an intermediate body, a mounting plate is arranged at the top of the ball serving frame, one end of the mounting plate is fixedly provided with a motor through a bolt, the mounting plate is provided with a power storage groove penetrating through the surface of the mounting plate, the power storage groove is provided with a transmission port penetrating through the surface of the mounting plate, a threaded shaft of the motor penetrates through the transmission port to be connected with a ball serving body, the ball serving body comprises a power storage frame positioned in the power storage groove, one side of the power storage frame is provided with a power storage spring, the power storage spring is connected with the power storage groove, two sides in the power storage frame are connected with connectors through extrusion springs, the connectors are cubes provided with threaded semicircular penetrating openings, two connectors form a complete circular penetrating opening and are in threaded connection with the threaded shaft of the motor, and the threaded shaft is close to the surface of the motor and provided with a slide bar, the bottom of the force storage frame is connected with a striking plate.

As a further improvement of the technical scheme, a fixing opening penetrating through the surface of the fixing plate is formed in the bottom of the fixing plate, a locking screw is connected to the inner thread of the fixing opening in a threaded manner, and a locking plate is rotatably connected to the top of the locking screw.

As a further improvement of the technical scheme, an adjusting opening penetrating through the surface of the top body is formed in one side of the top body, an adjusting screw rod is arranged in the adjusting opening, an adjusting groove is formed in the edge of the upper surface of the top of the bottom body, and the adjusting screw rod penetrates through the adjusting opening to be in threaded connection with the adjusting groove.

As a further improvement of the technical scheme, concave-structure grooves are symmetrically formed in two sides in the power storage groove, sliding bodies are arranged at two ends of the power storage frame, and the sliding bodies are connected with the power storage groove in a sliding mode.

As a further improvement of the technical scheme, one end of the force storage frame is provided with a connecting plate, and the connecting body is connected with the connecting plate in a sliding manner.

As a further improvement of the technical scheme, the striking plate is of an L-shaped structure, one end of the bottom of the striking plate is provided with a power groove and a rotating groove, a second motor is arranged in the power groove, a rotating body is arranged in the rotating groove, and the second motor is connected with the rotating body in a transmission mode.

As a further improvement of the technical scheme, the mounting plate is far away from one end of the first motor, a ball serving port is formed in the end, a ball pipe is arranged in the ball serving port, and a conical pipe is arranged at the top of the ball pipe.

As a further improvement of the technical scheme, the upper surface of the bottom of the serve frame is provided with a stabilizing groove, and the stabilizing groove is matched with the spherical shape of table tennis.

As the further improvement of this technical scheme, the midbody includes No. two bodies, and No. two body bottoms are equipped with the joint board, the joint board with top body joint cooperation, No. two grooves have been seted up to service frame bottom side surface, No. two inslot interpolation cooperations have a connecting rod, a connecting rod rotates and is connected with an regulating plate, the circular mouth of wearing of interior screwed that runs through its surface is seted up to a regulating plate, top body one side symmetry is equipped with No. one body, an internal rotation is connected with a screw rod, a screw rod threaded connection has a regulating plate.

As a further improvement of this technical scheme, No. two body tops are equipped with the connecting axle, the connecting axle is connected with the supporting body, the spread groove that runs through its surface is seted up at supporting body bottom disc middle part, the spread groove with the connecting axle rotates to be connected, No. three grooves have been seted up to supporting body bottom disc, No. three inslot interpolation cooperations have No. two connecting rods, No. two the connecting rod rotates and is connected with No. two regulating plates, No. two the regulating plate is seted up and is run through the circular mouth of wearing of its surperficial interior screwed, No. two body one side has seted up the connector, be equipped with No. two screws in the connector, No. two the screw rod with No. two regulating plate threaded connection.

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

1. in this but automatic service robot of table tennis of angle regulation's adaptation sportsman's use, be favorable to the combination of this device and table tennis table and avoid the not hard up of device through being equipped with locking screw and lockplate, highly making service height and sportsman highly uniform through adjusting screw, the adjustment tank that is equipped with threaded connection be favorable to controlling this device.

2. In this but table tennis automatic service robot of angle regulation's adaptation sportsman's use, can apply the revolving force to the soldier's table tennis through being equipped with the rotator when the batting and make the soldier's table tennis rotate and improve the training effect, through being equipped with the continuous input of the soldier's table tennis of being convenient for of bulb tube to improve the service efficiency of soldier's table tennis, can ensure the stability of soldier's table tennis when waiting to serve through being equipped with the stable trough, thereby ensure the service effect of soldier's table tennis.

3. In the automatic table tennis ball serving machine capable of adjusting the angle and being adaptive to the player, the first screw rod and the first adjusting plate which are connected through the threads can control the second body to rotate in the transverse direction, and the second screw rod and the second adjusting plate which are connected through the threads can drive the supporting body to rotate in the vertical direction.

Drawings

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

FIG. 2 is a schematic view of the structure of the ball serving device of the present invention;

FIG. 3 is a schematic structural diagram of a fixing body according to the present invention;

FIG. 4 is a schematic diagram of a ball of the present invention;

FIG. 5 is a schematic view of the striking body structure according to the present invention;

FIG. 6 is a schematic cross-sectional view of the ball catching plate according to the present invention;

FIG. 7 is a schematic cross-sectional view of an intermediate of the present invention.

The various reference numbers in the figures mean:

100. a ball serving device;

110. a fixed body;

111. a fixing plate; 112. a bottom body; 113. a top body; 114. an adjustment port; 1141. adjusting the screw rod; 115. an adjustment groove; 116. a first body; 117. a first screw rod; 118. a fixed port; 119. locking the screw rod; 1191. a locking plate;

120. a hair ball body;

121. a pitching frame; 122. mounting a plate; 123. a first motor; 124. a transmission port; 125. a force storage tank; 126. a slide bar; 127. a ball distributing port; 128. a bulb tube; 129. a stabilizing slot;

130. hitting a ball body;

131. a force storage frame; 132. a power storage spring; 133. a linker; 134. a compression spring; 135. a striking plate; 136. a connecting plate; 137. a sliding body; 138. a power tank; 1381. a second motor; 139. a rotating tank; 1391. a rotating body;

140. an intermediate;

141. body II; 142. a clamping and connecting plate; 143. a second groove; 144. a first connecting rod; 145. a first adjusting plate; 146. a connecting shaft; 147. a carrier; 1471. connecting grooves; 1472. a third groove; 148. a connecting port; 1481. a second screw; 149. a second connecting rod; 1491. and a second adjusting plate.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Example 1

Referring to fig. 1 to 5, the present embodiment provides an angle-adjustable table tennis automatic serving machine adapted to a player, including a serving device 100, where the serving device 100 at least includes:

the fixing body 110, the fixing body 110 includes a fixing plate 111, the fixing plate 111 is a "C" type structure, a bottom body 112 is arranged in the middle of the upper surface of the top of the fixing plate 111, the bottom body 112 is a cube, four corners of the upper surface of the top of the bottom body 112 are provided with cylindrical grooves, the top of the bottom body 112 is connected with a top body 113, the top body 113 is a cube plate, four corners of the bottom of the top body 113 are provided with cylinders which are in inserted connection with the bottom body 112, and the top of the top body 113 is provided with a middle body 140;

a service ball body 120, the service ball body 120 includes a service ball frame 121 whose bottom is connected with the top of a middle body 140, the service ball frame 121 is a U-shaped structure, the top of the service ball frame 121 is provided with a mounting plate 122, one end of the mounting plate 122 is fixed with a first motor 123 through a bolt, the mounting plate 122 is provided with a power storage groove 125 penetrating through the surface of the mounting plate, the power storage groove 125 is a square penetrating port, the power storage groove 125 is provided with a transmission port 124 penetrating through the surface of the mounting plate 122, the transmission port 124 is a circular penetrating port, a threaded shaft of the first motor 123 penetrates through the transmission port 124 and is connected with a striking ball body 130, the striking ball body 130 includes a power storage frame 131 positioned in the power storage groove 125, the power storage frame 131 is a U-shaped structure, one side of the power storage frame 131 is provided with a power storage spring 132, the power storage spring 132 is connected with the power storage groove 125, two sides in the power storage frame 131 are connected with connecting bodies 133 through an extrusion spring 134, the connecting bodies 133 are cubes provided with semicircular penetrating ports in which are provided with threads, the two connectors 133 form a complete circular through opening to be in threaded connection with a threaded shaft of the first motor 123, the threaded shaft is provided with a slide bar 126 close to the surface of the first motor 123, and the bottom of the force storage frame 131 is connected with a striking plate 135.

In the embodiment, when the device is used specifically, the fixing plate 111 of the device is combined with a table tennis table, so that the edge of the table tennis table is clamped in the fixing plate 111, the locking screw 119 is rotated in the fixing hole 118, the locking screw 119 drives the locking plate 1191 to move upwards to contact the table and ensure the stability of the serving device 100, the adjusting screw 1141 is rotated in the adjusting hole 114, the top body 113 is driven to lift under the effect of the threaded connection with the adjusting screw 1141 until the height of the top body is consistent with that of a player, the first motor 123 drives the threaded shaft to rotate to drive the power storage frame 131 in threaded connection with the threaded shaft to move towards one side of the first motor 123 along the power storage groove 125, so that the power storage spring 132 is elongated to generate elastic deformation, the power storage frame 131 continues to move until the two connecting bodies 133 are separated by the slide strips 126 on the surface of the threaded shaft so that the connecting bodies 133 are not in contact with the threads on the surface of the threaded shaft, under the pulling of the power storage frame 131 along the power storage groove 125, the direction away from the first motor 123, the striking plate 135 at the bottom of the power storage frame 131 is driven to strike the ball quickly, and at this time, under the squeezing action of the squeezing spring 134, the two separated connecting bodies 133 are folded along the connecting plate 136 to form a complete circular through opening, and are driven by the threaded shaft to move to one side of the first motor 123 to prepare for the next striking.

Further in order to avoid not hard up, fixed mouthful 118 that runs through its surface is seted up to fixed plate 111 bottom, and fixed mouthful 118 is the circular mouth of wearing of internal screw thread, and fixed mouthful 118 female connection has locking screw 119, and locking screw 119 top is rotated and is connected with lockplate 1191, and lockplate 1191 is the square plate, is favorable to this device and the combination of soldier's pang table and avoids the not hard up of device through being equipped with locking screw 119 and lockplate 1191.

Further in order to match the sportsman of different sizes, top body 113 one side begins to have the regulation mouth 114 that runs through its surface, be equipped with adjusting screw 1141 in the regulation mouth 114, bottom body 112 top upper surface edge is equipped with adjustment tank 115, adjustment tank 115 is the cylindrical structure recess of internal screw thread, adjusting screw 1141 passes adjustment mouth 114 and adjustment tank 115 threaded connection, adjusting screw 1141 through being equipped with threaded connection, adjustment tank 115 is favorable to controlling the height of this device and makes the height of serving a ball highly unanimous with sportsman.

In order to avoid falling off, concave grooves are symmetrically formed in two sides of the power storage groove 125, sliding bodies 137 are arranged at two ends of the power storage frame 131, each sliding body 137 is a square protrusion, the sliding bodies 137 are slidably connected with the power storage groove 125, and the power storage frame 131 can be prevented from falling off from the power storage groove 125 through the power storage groove 125 and the sliding bodies 137 which are slidably connected.

Further, in order to facilitate the combination, a connecting plate 136 is arranged at one end of the force storage frame 131, the connecting plate 136 is a cube provided with a groove in a shape like the Chinese character 'zhong', square protrusions are arranged at the top and the bottom of the connecting body 133, the connecting body 133 is slidably connected with the connecting plate 136, and the connecting body 133 and the connecting plate 136 which are slidably connected can ensure the accurate combination of the two connecting bodies 133 so as to form a complete round through opening.

Example 2

In order to improve training effect when realizing that the pitching machine can match different size sportsmen, this embodiment makes the improvement on embodiment 1's basis, wherein hit ball board 135 is "L" type structure, hit ball board 135 bottom one end and seted up power groove 138 and swivelling chute 139, power groove 138 is square body structure recess, be equipped with No. two motor 1381 in the power groove 138, be equipped with rotator 1391 in the swivelling chute 139, rotator 1391 is the cylinder, No. two motor 1381 transmission is connected with rotator 1391, can apply the revolving force to the soldier's table tennis when hitting the ball through being equipped with rotator 1391 and make the soldier's table tennis rotate and add the improvement training effect.

Example 3

Please refer to fig. 6, the service efficiency of the service robot is improved when the service robot can be matched with different sizes of players, the present embodiment is improved on the basis of embodiment 1, wherein the mounting plate 122 is far away from one end of the first motor 123 and is provided with a service opening 127, the service opening 127 is a circular through opening, a ball pipe 128 is arranged in the service opening 127, the top of the ball pipe 128 is provided with a taper pipe, and the continuous putting of table tennis balls is facilitated by the arrangement of the ball pipe 128, so that the service efficiency of the table tennis balls is improved.

Further, serve frame 121 bottom upper surface and be equipped with stabilising groove 129, stabilising groove 129 is partial spheroid structure recess, and stabilising groove 129 is identical with the spherical form of soldier's pang, can ensure the stability of soldier's pang ball when waiting to serve through being equipped with stabilising groove 129 to ensure the effect of serving of soldier's pang ball.

Example 4

Referring to fig. 7, while the pitching machine can match players of different sizes, the pitching angle of the pitching machine can be adjusted to obtain a better use effect, and the following improvements are made on the basis of embodiment 1 in the present embodiment:

the middle body 140 comprises a second body 141, a clamping plate 142 is arranged at the bottom of the second body 141, the clamping plate 142 is of an inverted T-shaped cylindrical structure, a circular penetrating opening penetrating through the surface of the top body 113 is formed in the middle of the top body 113, the clamping plate 142 is in clamping fit with the top body 113, a second groove 143 is formed in the side surface of the bottom of the ball-emitting frame 121, the second groove 143 is a cylindrical structure groove, a first connecting rod 144 is inserted and matched in the second groove 143 in a inserting mode, the first connecting rod 144 is rotatably connected with a first adjusting plate 145, the first adjusting plate 145 is provided with a circular penetrating opening penetrating through the inner thread of the surface of the first adjusting plate 145, the first body 116 is symmetrically arranged on one side of the top body 113, a first screw 117 is rotatably connected in the first body 116, the first screw 117 is in threaded connection with a first adjusting plate 145, and the second body 141 can be controlled to rotate in the transverse direction by the first screw 117 and the adjusting plate 145.

In the embodiment, when the device is used specifically, the first screw 117 is rotated to enable the first screw 117 to drive the first adjusting plate 145 in threaded connection with the first screw 117 to move along the surface of the first screw 117, the first adjusting plate 145 further drives the first connecting rod 144 to move in the second groove 143 to control the transverse rotation of the second body 141, the second screw 1481 is rotated in the connecting port 148 to enable the second screw 1481 to drive the second adjusting plate 1491 in threaded connection with the second screw 1481 to move along the surface of the second screw 1481, and the second adjusting plate 1491 further drives the second connecting rod 149 to control the supporting body 147 to rotate vertically by taking the connecting shaft 146 as an axis, so that the device is favorably adjusted in the ball serving angle.

Further, the top of the second body 141 is provided with a connecting shaft 146, the connecting shaft 146 is connected with a supporting body 147, the middle of a disk at the bottom of the supporting body 147 is provided with a connecting groove 1471 penetrating through the surface of the supporting body, the connecting groove 1471 is a circular through hole, the connecting groove 1471 is rotatably connected with the connecting shaft 146, the disk at the bottom of the supporting body 147 is provided with a third groove 1472, the third groove 1472 is a cylindrical groove, a second connecting rod 149 is inserted and matched in the third groove 1472, the second connecting rod 149 is rotatably connected with a second adjusting plate 1491, the second adjusting plate 1491 is provided with a circular through hole penetrating through the surface of the second adjusting plate 1491, one side of the second body 141 is provided with a connecting port 148, the connecting port 148 is a circular through hole, a second screw 1481 is arranged in the connecting port 148, and the second screw 1481 is in threaded connection with the second adjusting plate 1491, the supporting body 147 can be driven to rotate in the vertical direction by a second screw 1481 and a second adjusting plate 1491 which are provided with screw threads.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automatic service robot of table tennis that but angle regulation's adaptation sportsman used which characterized in that: comprising a serving device (100), said serving device (100) comprising at least:

the fixing body (110) comprises a fixing plate (111), a bottom body (112) is arranged in the middle of the upper surface of the top of the fixing plate (111), four corners of the upper surface of the top of the bottom body (112) are provided with cylindrical grooves, the top of the bottom body (112) is connected with a top body (113), four corners of the bottom of the top body (113) are provided with cylinders in plug fit with the bottom body (112), and the top of the top body (113) is provided with a middle body (140);

the power transmission device comprises a power transmission body (120), the power transmission body (120) comprises a power transmission frame (121) with the bottom connected with the top of an intermediate body (140), a mounting plate (122) is arranged at the top of the power transmission frame (121), a first motor (123) is fixed at one end of the mounting plate (122) through a bolt, a power storage groove (125) penetrating through the surface of the mounting plate (122) is formed in the mounting plate (122), a transmission port (124) penetrating through the surface of the mounting plate (122) is formed in the power storage groove (125), a threaded shaft of the first motor (123) penetrates through the transmission port (124) and is connected with a power transmission body (130), the power transmission body (130) comprises a power storage frame (131) positioned in the power storage groove (125), a power storage spring (132) is arranged on one side of the power storage frame (131), the power storage spring (132) is connected with the power storage groove (125) and a connecting body (133) is connected to the two sides in the power storage frame (131) through an extrusion spring (134), the connecting body (133) is a cube provided with a threaded semicircular penetrating opening, the connecting body (133) forms a complete circular penetrating opening to be in threaded connection with the threaded shaft of the first motor (123), the threaded shaft is close to the surface of the first motor (123) and is provided with a slide bar (126), and the bottom of the force storage frame (131) is connected with a ball striking plate (135).

2. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: fixed mouthful (118) of running through its surface are seted up to fixed plate (111) bottom, fixed mouthful (118) female connection has locking screw (119), locking screw (119) top is rotated and is connected with lockplate (1191).

3. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: the top body (113) is provided with an adjusting opening (114) penetrating through the surface of the top body, an adjusting screw rod (1141) is arranged in the adjusting opening (114), an adjusting groove (115) is arranged on the edge of the upper surface of the top of the bottom body (112), and the adjusting screw rod (1141) penetrates through the adjusting opening (114) to be in threaded connection with the adjusting groove (115).

4. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: two sides in the power storage groove (125) are symmetrically provided with concave structural grooves, two ends of the power storage frame (131) are provided with sliding bodies (137), and the sliding bodies (137) are in sliding connection with the power storage groove (125).

5. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: one end of the force storage frame (131) is provided with a connecting plate (136), and the connecting body (133) is connected with the connecting plate (136) in a sliding mode.

6. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: the striking plate (135) is "L" type structure, power groove (138) and swivelling chute (139) have been seted up to striking plate (135) bottom one end, be equipped with No. two motor (1381) in power groove (138), be equipped with rotator (1391) in swivelling chute (139), No. two motor (1381) transmission is connected with rotator (1391).

7. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: the mounting panel (122) is kept away from motor (123) one end has seted up service ball mouth (127), be equipped with bulb (128) in service ball mouth (127), bulb (128) top is equipped with the taper pipe.

8. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: the upper surface of the bottom of the pitching frame (121) is provided with a stabilizing groove (129), and the stabilizing groove (129) is matched with the spherical shape of table tennis.

9. The automatic table tennis ball serving machine of claim 1, wherein the automatic table tennis ball serving machine comprises: midbody (140) are equipped with joint board (142) including No. two bodies (141), No. two bodies (141) bottom, joint board (142) with top body (113) joint cooperation, No. two groove (143) have been seted up to frame for balling-up (121) bottom side surface, No. two groove (143) interpolation cooperations have connecting rod (144), connecting rod (144) rotate and are connected with regulating plate (145) No. one, regulating plate (145) set up the circular wearing of the interior screw thread that runs through its surface, top body (113) one side symmetry is equipped with body (116) No. one, body (116) internal rotation is connected with screw rod (117) No. one, screw rod (117) threaded connection have regulating plate (145) No. one.

10. The automatic table tennis ball serving machine of claim 9, wherein the automatic table tennis ball serving machine is characterized in that: the top of the second body (141) is provided with a connecting shaft (146), the connecting shaft (146) is connected with a supporting body (147), the middle of a disk at the bottom of the supporting body (147) is provided with a connecting groove (1471) penetrating through the surface of the connecting shaft, the connecting groove (1471) is rotationally connected with the connecting shaft (146), the disk at the bottom of the supporting body (147) is provided with a third groove (1472), the third groove (1472) is internally inserted and matched with a second connecting rod (149), the second connecting rod (149) is rotationally connected with a second adjusting plate (1491), the second adjusting plate (1491) is provided with a circular penetrating opening penetrating through the surface of the second adjusting plate, a connecting opening (148) is formed in one side of the second body (141), a second screw rod (1481) is arranged in the connecting opening (148), and the second screw rod (1481) is in threaded connection with the second adjusting plate (1491).