CN114592417A

CN114592417A - Pitch highway maintenance hole groove processing apparatus

Info

Publication number: CN114592417A
Application number: CN202210326878.9A
Authority: CN
Inventors: 李晓梅; 连福军
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-06-07

Abstract

The invention provides a treatment device for asphalt highway maintenance pits, which relates to the technical field of highway maintenance and comprises the following components: a main body; the bottom of main part is equipped with the end, and the front end of end is connected with the pull rod, and the pull rod is middle bellied cylindrical structure, and the front end hub connection of pull rod has the removal wheel, and the pull rod is equipped with two altogether, and the outer end of two pull rods is equipped with a control, and the control is rectangular plate structure. The pull rod is used for installing in the inside of kerve, can be at the inside pulling displacement of pull rod, when making this device be in not the not pot hole top of equidimension and maintain the processing, can utilize the pull rod to adjust the position of removing the wheel, make this device can be in on the level and smooth road surface all the time, make the moving member can vertical migration maintain, and remove the wheel and can be all the time with plane contact, make the main part can remove and maintain on one side, pot hole processing apparatus has been solved, the support position is not convenient for adjust, be not convenient for carry out position control according to the size in pot hole, can't be after the problem of smooth displacement of regulation.

Description

Pitch highway maintenance hole groove processing apparatus

Technical Field

The invention relates to the technical field of highway maintenance, in particular to a treatment device for asphalt highway maintenance pits.

Background

After the asphalt highway is used for a long time, a plurality of pits with different sizes are easy to appear on the road surface, so that vehicles are easy to damage when passing through the asphalt highway, and traffic accidents can occur when the vehicles are serious, so that the pits need to be maintained and repaired frequently, and a processing device is required to carry out shaping processing on the pits when repairing, so that asphalt added at the later stage is convenient to fill and use;

however, as for the current traditional pit slot processing device, the supporting position is not convenient to adjust, the position adjustment is not convenient to be carried out according to the size of the pit slot, the smooth displacement after the adjustment cannot be carried out, the structure for amplifying the vibration effect is lacked when the processing device repairs the pit slot, the power of the vibration motor cannot be sufficiently received to repair the pit slot, the pit slot processing device is inconvenient and the contact position is prolonged, and the extension repairing structure cannot be added according to the requirement.

Disclosure of Invention

In view of the above, the present invention provides a device for treating a pit for maintaining an asphalt road, which comprises a pull rod, wherein the pull rod can move outwards in the pull groove to drive a moving wheel to adjust a supporting position, so that the device can be used horizontally, and can move stably while being used.

The invention provides a treatment device for asphalt highway maintenance pits, which specifically comprises: a main body; the main body is of a rectangular plate-shaped structure, a bottom piece is arranged at the bottom of the main body, the front end of the bottom piece is connected with a pull rod, the pull rod is of a cylindrical structure with a convex middle part, the front end shaft of the pull rod is connected with two moving wheels, the outer ends of the two pull rods are provided with a control piece, and the control piece is of a rectangular plate-shaped structure; the movable part is of a U-shaped plate structure, the bottom of the movable part is of a wedge-shaped structure, the movable part is installed at the front end of the main body, a vibrating motor is arranged in the middle of the front end of the movable part, two rectangular plates are arranged at the front end of the movable part, four contact elements are installed inside the rectangular plates and are located on the outer sides of the vibrating motor, each contact element consists of two L-shaped plates and one rectangular plate, and a wedge block is arranged in the middle of the outer side of each contact element; the auxiliary member, the auxiliary member is rectangle long strip structure, and the bottom of auxiliary member is the wedge structure, and the auxiliary member is equipped with two altogether, and two auxiliary members are installed respectively in the bottom both sides of moving member, and the inside of auxiliary member is equipped with inserts the piece, inserts the piece and be the rectangle structure, and the top both sides of inserting the piece are equipped with a rectangular channel respectively, and the bottom of inserting the piece is equipped with the round bar, and the outside cover of round bar is equipped with the spring.

Optionally, a storage battery is arranged behind the main body, two guide grooves are respectively arranged on two sides of the front end of the main body, and each guide groove is of a T-shaped structure; a stress piece is arranged above the front end of the main body, the stress piece is of a T-shaped plate structure, two sides of the bottom of the stress piece are of inclined structures, and a round hole is formed in the middle of the interior of the stress piece; the bottom piece is of a rectangular structure, the two sides of the rear end of the bottom piece are axially connected with rotating pieces, the rotating pieces are of a circular structure, two sides of the front end of the bottom piece are respectively provided with a pull groove, the pull grooves are of cylindrical structures with middle bulges, and pull rods are embedded into the pull grooves.

Optionally, two sides of the rear of the moving member are respectively provided with a sliding block, the sliding blocks are of a T-shaped structure, the sliding blocks are embedded in the guide grooves, a fixed block is respectively arranged above two sides of the front end of the moving member, the bottom of the fixed block is of a wedge-shaped structure, the top end of the fixed block is provided with a rectangular groove, the top end of the fixed block is provided with an operating member, the outer side of the fixed block is provided with a guide rod, the guide rod is of a cylindrical structure with a convex middle part, and the outer side of the guide rod is sleeved with a spring; the clamping plate is inserted into the rectangular groove of the fixed block and is of an L-shaped plate structure, the inner end of the clamping plate is of a wedge-shaped structure, the inner end of the clamping plate is positioned on the outer side of the top end of the stress element, the bottom of the clamping plate is provided with a rectangular plate, a round hole is formed in the rectangular plate, and a guide rod is inserted into the round hole; a guide rod is arranged above the rectangular plate at the top end of the moving member, the guide rod is of a cylindrical structure, a spring is sleeved outside the bottom of the guide rod, the guide rod penetrates through a round hole of the stressed member, the top end of the guide rod is connected with the control member, two sides of the bottom of the moving member are respectively provided with a connecting groove, and the connecting grooves are of an L-shaped structure; the inside of every rectangular plate of moving member is equipped with four mounting grooves, and the mounting groove is L shape structure, and the inside of mounting groove has inserted the contact, is equipped with a fixture block between per two mounting grooves, and the fixture block is the wedge structure, fixture block and wedge contact.

Optionally, a guide groove is formed in the auxiliary part, the guide groove is of an L-shaped structure, a reinforcing block is arranged above the inner end of the auxiliary part, the reinforcing block is of a wedge-shaped structure, an inner groove is formed in the insertion block, and the inner groove is of a T-shaped structure; the internally mounted of guide way has the trigger piece, and the trigger piece is L shape structure, and the inner of trigger piece is the wedge structure, and the internally mounted of inside groove has the locating part, and the locating part is T shape structure, and the outside bottom of locating part is the slope column structure, and the inside of locating part is equipped with the round hole, and the inside round bar that inserts the piece inside has been inserted to the inside of round hole, and the bottom of locating part inserts in the inside bottom of spread groove.

Advantageous effects

According to the pit processing device of the embodiments of the present invention, compared with the conventional pit processing device, the pit processing device is provided with the insertion block, and the insertion block is inserted into the connection groove, so that the auxiliary member can be fixedly installed and used along with the bottom of the moving member, and the trimming distance is further extended, and the work efficiency can be effectively improved.

In addition, through the pull rod, the pull rod is used for being installed inside the pull groove, and can be used for pulling displacement inside the pull rod, so that when the device is located above pit grooves with different sizes for trimming, the position of the moving wheel can be adjusted by using the pull rod, the device can be always located on a flat road surface, further, the moving part can vertically move for trimming, and the moving wheel can always contact with a plane, so that the main body can move and trim at the same time;

in addition, by installing the contact element which is used for being installed inside the installation groove, the wedge-shaped block can be in staggered contact with the fixture block made of rubber, so that the contact element can be fixed, when the vibration motor runs, the vibration force can be directly transmitted to the contact element through the outer wall, the contact element transmits the power to the rectangular plate and the moving element, the moving element can be moved under full stress, and when the bottom of the moving element is in contact with the edge of the pit groove, the pit groove can be effectively and quickly repaired, the pit groove can be tidy, the maintenance and repair are facilitated, and the working efficiency is effectively improved;

in addition, insert the piece through the installation, when needs extension are repaiied the distance, can control the auxiliary member installation, make and insert piece and locating part and can insert in the inside of spread groove simultaneously, and then make the auxiliary member can be in the bottom both sides of moving member and use together, when making the moving member remove, can drive the auxiliary member and repaire the pot hole together, and then improve and repair efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings in the following description relate to some embodiments of the invention only and are not intended to limit the invention.

In the drawings:

fig. 1 is a schematic view showing a three-dimensional structure of a pit treatment apparatus according to an embodiment of the present invention;

fig. 2 shows a schematic view of a bottom view of a pit handling apparatus according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an exploded perspective structure of a pit processing apparatus according to an embodiment of the present invention;

fig. 4 shows a schematic view of an exploded bottom view of a pit handling apparatus according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an exploded perspective structure of a main body of a pit processing apparatus according to an embodiment of the present invention;

fig. 6 is a schematic view showing an exploded perspective structure of a moving member of the pit disposal apparatus according to an embodiment of the present invention;

fig. 7 is a schematic view showing an exploded bottom view of a moving member of the pit treating apparatus according to the embodiment of the present invention;

fig. 8 is a schematic view illustrating an exploded perspective and partially enlarged structure of an auxiliary of the pit disposal apparatus according to an embodiment of the present invention.

List of reference numerals

1. A main body; 101. a storage battery; 102. a guide groove; 103. a force-receiving member; 104. a bottom piece; 105. a rotating member; 106. groove drawing; 107. a pull rod; 108. a control member;

2. a moving member; 201. a slider; 202. a fixed block; 203. clamping a plate; 204. a guide bar; 205. mounting grooves; 206. a clamping block; 207. a contact member; 208. connecting grooves;

3. an auxiliary member; 301. a guide groove; 302. a reinforcing block; 303. inserting a block; 304. an inner tank; 305. a trigger; 306. and a limiting member.

Detailed Description

In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

Example (b): please refer to fig. 1 to fig. 8:

the invention provides a treatment device for asphalt highway maintenance pits, which comprises: a main body 1; the main body 1 is a rectangular plate-shaped structure, the bottom of the main body 1 is provided with a bottom piece 104, the front end of the bottom piece 104 is connected with a pull rod 107, the pull rod 107 is a cylindrical structure with a convex middle part, so that the pull rod 107 can be pulled and displaced in the pull groove 106 and cannot be separated after being pulled outwards, the front end shaft of the pull rod 107 is connected with a moving wheel, after the pull rod 107 is moved, the two pull rods 107 can be supported and displaced through the moving wheel, the outer ends of the two pull rods 107 are provided with a control piece 108, and the control piece 108 is a rectangular plate-shaped structure and is used for connecting the two pull rods 107 together and supporting simultaneously; the movable part 2 is a U-shaped plate structure, the bottom of the movable part 2 is a wedge-shaped structure and can be directly contacted with the pit slot, so that the pit slot can be effectively cut and repaired, the movable part 2 is arranged at the front end of the main body 1, a vibration motor is arranged in the middle of the front end of the movable part 2, so that the vibration motor can generate power, the power is transmitted to the movable part 2, the bottom of the movable part 2 can be contacted with the pit slot, so that the pit slot can be corrected in an auxiliary manner, two rectangular plates are arranged at the front end of the movable part 2 and used for assisting in installing the contact part 207 and the vibration motor, four contact parts 207 are arranged in the rectangular plates, the four contact parts 207 are positioned outside the vibration motor, so that the vibration motor can chase after the power is transmitted to the contact parts 207, the power is transmitted to the movable part 2 again, so that the movable part 2 can be sufficiently displaced and repaired, each contact part 207 comprises two L-shaped plates and one rectangular plate, a wedge-shaped block is arranged in the middle of the outer side of the contact piece 207 and is used for being in contact with the fixture block 206, so that the contact piece 207 can be stably installed and is not easy to separate after being installed; auxiliary 3, auxiliary 3 is rectangular strip structure, auxiliary 3's bottom is the wedge structure, can move together with moving member 2, and then move the repairment together, auxiliary 3 is equipped with two altogether, two auxiliary 3 install respectively in the bottom both sides of moving member 2, auxiliary 3's inside is equipped with inserts piece 303, it is the rectangular structure to insert piece 303, be used for inserting the internal connection at spread groove 208, the top both sides that insert piece 303 are equipped with a rectangular channel respectively, the bottom that inserts piece 303 is equipped with the round bar, the outside cover of round bar is equipped with the spring, be used for installing locating part 306, make the bottom of locating part 306 can insert the inside bottom at spread groove 208, and then make insert that piece 303 can stabilize the erection joint.

Referring to fig. 5, a storage battery 101 is disposed at the rear of the main body 1 to provide power for the vibration motor, two guide grooves 102 are respectively disposed at two sides of the front end of the main body 1, and each guide groove 102 is a T-shaped structure and is used for mounting a sliding block 201, so that when the moving member 2 is forced to move, the moving member can be guided to control vertical displacement; the upper part of the front end of the main body 1 is provided with a stressed member 103, the stressed member 103 is of a T-shaped plate structure and is used for contacting with the inner end of the clamping plate 203 so as to fix the clamping plate 203, two sides of the bottom of the stressed member 103 are of inclined structures so that the clamping plate 203 can be guided to pass through, and a circular hole is formed in the middle position inside the stressed member 103 so that a guide rod 204 can pass through; bottom piece 104 is the rectangle structure, the rear end both sides hub connection of bottom piece 104 has rotating member 105, make rotating member 105 can be in the rotatory use of side of bottom piece 104, rotating member 105 is circular structure, bottom piece 104 front end both sides are equipped with an kerve 106 respectively, kerve 106 is middle bellied cylindrical structure, the inside embedding of kerve 106 has pull rod 107, make pull rod 107 can be at its inside pulling adjusting position, and then make and remove the wheel and can use in adjusting position.

Referring to fig. 6 and 7, two sides of the rear of the moving member 2 are respectively provided with a sliding block 201, the sliding blocks 201 are of a T-shaped structure, the sliding blocks 201 are embedded in the guide grooves 102, and the moving member 2 can be controlled to move when moving, a fixed block 202 is respectively arranged above two sides of the front end of the moving member 2, the bottom of the fixed block 202 is of a wedge-shaped structure, the top end of the fixed block 202 is provided with a rectangular groove for moving the clamping plate 203, the top end of the fixed block 202 is provided with an operating member for controlling the moving member 2 to be dead in adjusting position, the outer side of the fixed block 202 is provided with a guide rod, the guide rod is of a cylindrical structure with a convex middle, and the outer side of the guide rod is sleeved with a spring so that the spring can push the clamping plate 203 to move continuously; the clamping plate 203 is inserted into the rectangular groove of the fixed block 202, the clamping plate 203 is of an L-shaped plate structure, the inner end of the clamping plate 203 is of a wedge-shaped structure, the inner end of the clamping plate 203 is located on the outer side of the top end of the stress element 103 and used for driving the moving element 2 to be fixed in a limiting mode, the bottom of the clamping plate 203 is provided with a rectangular plate, a round hole is formed in the rectangular plate, and a guide rod is inserted into the round hole to enable the clamping plate 203 to move in a guiding mode; a guide rod 204 is arranged above the rectangular plate at the top end of the moving member 2, the guide rod 204 is of a cylindrical structure, a spring is sleeved outside the bottom of the guide rod 204, the spring can push the rectangular plate, so that the moving member 2 can adjust the position, the bottom of the moving member 2 can be in contact with the edge position of the pit groove for finishing treatment, a round hole of the guide rod 204, which penetrates through the stress member 103, is formed in the top end of the guide rod 204 and is connected with the control member, two connecting grooves 208 are respectively arranged on two sides of the bottom of the moving member 2, each connecting groove 208 is of an L-shaped structure and is used for inserting, installing and inserting a block 303 and a limiting member 306, and the auxiliary member 3 can be installed outside the moving member 2 for fixed use; four mounting grooves 205 are formed in the inner side of each rectangular plate of the moving member 2, each mounting groove 205 is of an L-shaped structure, a contact member 207 is inserted into each mounting groove 205, the contact members 207 can be fixedly mounted and used, a clamping block 206 is arranged between every two mounting grooves 205, each clamping block 206 is of a wedge-shaped structure, and each clamping block 206 is in contact with a wedge block, so that the wedge blocks can be blocked, and the contact members 207 cannot be separated.

Referring to fig. 8, the auxiliary member 3 is provided with a guide groove 301 therein, the guide groove 301 is of an L-shaped structure for mounting a trigger 305 so that the trigger 305 can be guided and displaced, a reinforcing block 302 is provided above the inner end of the auxiliary member 3, the reinforcing block 302 is of a wedge-shaped structure for contacting with the moving member 2 for assisting the support, an inner groove 304 is provided inside the inserting block 303, the inner groove 304 is of a T-shaped structure so that the limiting member 306 can be displaced inside; the internal installation of guide way 301 has trigger piece 305, trigger piece 305 is L shape structure, the inner of trigger piece 305 is wedge structure, can promote trigger piece 305 displacement through the manpower, and then make its inner end can push up locating part 306 and rise, and then remove spacing, make auxiliary member 3 can take off, the internal installation of inner groove 304 has locating part 306, locating part 306 is T shape structure, the outside bottom of locating part 306 is the slope column structure, can agree with the inner of trigger piece 305, make locating part 306 can be pushed up, and then remove spacing, the inside of locating part 306 is equipped with the round hole, the inside round rod that inserts the inside of piece 303 has been inserted to the inside of round hole, the bottom of locating part 306 inserts in the inside bottom of connecting groove 208, make locating part 306 can insert fixedly.

The specific use mode and function of the embodiment are as follows: in the invention, when the device is required to be used, the device can be controlled to move to a hollow position through manpower, then the auxiliary element 3 is controlled to be installed according to the size of a hollow, the trigger element 305 is pushed to move firstly, the trigger element 305 can push the limiting element 306 to ascend, then the inserting block 303 and the limiting element 306 are controlled to be inserted into the connecting groove 208, then the trigger element 305 is controlled to move outwards, the limiting element 306 can be pushed to move by a spring, the bottom of the limiting element 306 can be inserted into the bottom of the connecting groove 208, further the two auxiliary elements 3 can be installed on two sides of the bottom of the moving element 2 to be used, further the trimming length is prolonged, the control element 108 is pulled to move outwards, the pull rod 107 can move outwards in the pull groove 106 to further move the position of the moving wheel, the moving wheel can be positioned above the outer part of the hollow, and then the vibration motor is controlled to be electrically connected with the storage battery 101, then open the vibrating motor switch, make the vibrating motor operation, then stimulate two cardboard 203 outward movement simultaneously, make cardboard 203 can break away from and contact fixedly with atress piece 103, then the spring in the guide arm 204 outside promotes the rectangular plate and moves down, make moving member 2 can contact with the marginal position of auxiliary member 3's bottom and pothole, vibrating motor directly transmits power for contact 207 simultaneously, and then directly transmits power, make moving member 2 after the atress, can contact with the pothole, and then directly the processing pothole of finishing, make the marginal position of pothole can the flattening, and then the solidification and the packing of the pitch of being convenient for, make the pothole can be handled by effectual.

Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims

1. The utility model provides an asphalt highway maintenance pot hole processing apparatus which characterized in that includes: a main body (1); the bottom of the main body (1) is provided with a bottom piece (104), the front end of the bottom piece (104) is connected with a pull rod (107), the pull rod (107) is of a cylindrical structure with a convex middle part, the front end shaft of the pull rod (107) is connected with a movable wheel, the number of the pull rods (107) is two, the outer ends of the two pull rods (107) are provided with a control piece (108), and the control piece (108) is of a rectangular plate-shaped structure; the bottom of the moving piece (2) is of a wedge-shaped structure, the moving piece (2) is installed at the front end of the main body (1), a vibrating motor is arranged in the middle of the front end of the moving piece (2), two rectangular plates are arranged at the front end of the moving piece (2), a contact piece (207) is installed inside each rectangular plate, the contact piece (207) is located on the outer side of the vibrating motor, each contact piece (207) consists of two L-shaped plates and one rectangular plate, and a wedge block is arranged in the middle of the outer side of each contact piece (207); auxiliary member (3), the bottom of auxiliary member (3) is the wedge structure, and auxiliary member (3) are equipped with two altogether, and two auxiliary members (3) are installed respectively in the bottom both sides of moving member (2), and the inside of auxiliary member (3) is equipped with inserts piece (303), and the top both sides that insert piece (303) are equipped with a rectangular channel respectively, and the bottom that inserts piece (303) is equipped with the round bar, and the outside cover of round bar is equipped with the spring.

2. The asphalt road maintenance pit treatment device according to claim 1, wherein: the rear of the main body (1) is provided with a storage battery (101), two sides of the front end of the main body (1) are respectively provided with a guide groove (102), and the guide grooves (102) are of T-shaped structures.

3. The asphalt road maintenance pit treatment device according to claim 2, wherein: the front end upper side of main part (1) is equipped with atress piece (103), and the bottom both sides of atress piece (103) are the slope column structure, and the inside intermediate position of atress piece (103) is equipped with the round hole.

4. The asphalt road maintenance pit treatment device according to claim 1, wherein: the rear end of the bottom piece (104) is connected with a rotating piece (105) through a shaft, the rotating piece (105) is of a circular structure, two sides of the front end of the bottom piece (104) are respectively provided with a pull groove (106), the pull grooves (106) are of a cylindrical structure with a convex middle, and a pull rod (107) is embedded in the pull grooves (106).

5. The asphalt road maintenance pit treatment device according to claim 3, wherein: the rear two sides of the moving piece (2) are respectively provided with a sliding block (201), the sliding block (201) is embedded into the guide groove (102), two fixing blocks (202) are respectively arranged above the two sides of the front end of the moving piece (2), the bottom of each fixing block (202) is of a wedge-shaped structure, the top of each fixing block (202) is provided with a rectangular groove, the top of each fixing block (202) is provided with an operation control part, the outer side of each fixing block (202) is provided with a guide rod, each guide rod is of a cylindrical structure protruding in the middle, and the outer side of each guide rod is sleeved with a spring.

6. The asphalt road maintenance pit treatment device according to claim 5, wherein: cardboard (203) have been inserted to the rectangular channel inside of fixed block (202), and the inner of cardboard (203) is in the top outside of atress piece (103), and the bottom of cardboard (203) is equipped with the rectangular plate, and the inside of rectangular plate is equipped with the round hole, and the inside of round hole has inserted the guide bar.

7. The asphalt road maintenance pit treatment device according to claim 1, wherein: the improved structure of the moving part is characterized in that a guide rod (204) is arranged above the rectangular plate at the top end of the moving part (2), a spring is sleeved outside the bottom of the guide rod (204), the guide rod (204) penetrates through a round hole of the stressed part (103), the top end of the guide rod (204) is connected with the control part, and two sides of the bottom of the moving part (2) are respectively provided with a connecting groove (208).

8. The asphalt road maintenance pit treatment device according to claim 1, wherein: four mounting grooves (205) are arranged on the inner side of each rectangular plate of the moving piece (2), a contact piece (207) is inserted into each mounting groove (205), a clamping block (206) is arranged between every two mounting grooves (205), each clamping block (206) is of a wedge-shaped structure, and each clamping block (206) is in contact with each wedge-shaped block.

9. The asphalt road maintenance pit treatment device as defined in claim 7, wherein: a guide groove (301) is formed in the auxiliary piece (3), a reinforcing block (302) is arranged above the inner end of the auxiliary piece (3), the reinforcing block (302) is of a wedge-shaped structure, an inner groove (304) is formed in the inserting block (303), and the inner groove (304) is of a T-shaped structure.

10. The asphalt road maintenance pit treatment device as set forth in claim 9, wherein: the inner mounting of guide way (301) has trigger piece (305), and the inner of trigger piece (305) is the wedge structure, and the internally mounted of inside groove (304) has locating part (306), and locating part (306) are T shape structure, and the outside bottom of locating part (306) is slope column structure, and the inside of locating part (306) is equipped with the round hole, and the inside round bar that inserts inside piece (303) has been inserted to the inside of round hole, and the bottom of locating part (306) inserts in the inside bottom of connecting groove (208).