CN112343329A

CN112343329A - Construction frame

Info

Publication number: CN112343329A
Application number: CN202011314607.9A
Authority: CN
Inventors: 张静
Original assignee: 张静
Current assignee: Shandong Songyan Construction Engineering Co.,Ltd.
Priority date: 2020-11-21
Filing date: 2020-11-21
Publication date: 2021-02-09
Anticipated expiration: 2040-11-21
Also published as: CN112343329B

Abstract

A construction scaffold relates to the field of connection among scaffolds and comprises steel pipes, a longitudinal connector and a transverse connector, wherein two ends of each steel pipe are provided with isosceles trapezoid-shaped gaps, the longitudinal connector comprises a first shell, an upper gear ring and a lower gear ring, a driving wheel is meshed between the two gear rings together, the upper gear ring and the lower gear ring are both rotatably connected with ejector blocks, and the ejector blocks are both rotatably connected with first plate clasping bodies; the transverse connector comprises a second shell, a first sliding groove is formed in the second shell, a first connecting rod and a second connecting rod are arranged in the first sliding groove, the second connecting rod is connected with a first sliding block, and the first sliding block is connected with a second plywood; a sinking groove is formed in the outer side face of the second shell, and a trapezoidal block is fixedly arranged in the sinking groove. The invention has no scattered parts, and parts or fasteners are not easy to lose; the steel pipes are connected in a butt joint mode, the lap joint phenomenon is avoided, the connection is firmer, the steel pipes have no welding structures, the notches are formed in the end parts, the later-stage application of the steel pipes to other lap joint modes is not influenced, and the reutilization rate is high.

Description

Construction frame

Technical Field

The invention relates to the field of connection among scaffolds, in particular to a construction frame.

Background

The scaffold is an important building tool in building construction, is usually built on the outer side of a building, provides a station for constructors, and facilitates the transportation of materials.

The scaffold has three types of bowl-buckled type scaffold, fastener type scaffold and disc-buckled type scaffold, the connecting piece of the bowl-buckled type scaffold is easy to lose, the screw rod of the fastener type scaffold is easy to lose, the disc-buckled type scaffold needs to weld parts on the steel pipe in advance, the used steel pipe cannot be used in other building forms, and the applicable steel pipe is single in size and does not have universality; and the scaffold is built by utilizing bamboo poles, and the binding mode is used, so that the scaffold is not firm, and wastes time and labor.

Disclosure of Invention

In view of the above situation, the present invention aims to provide a construction frame, which has no scattered fasteners, does not need to weld steel pipes in advance, and is convenient to disassemble and assemble.

The construction frame is characterized in that two ends of the steel pipe are provided with isosceles trapezoid gaps, the upper bottom edge of the isosceles trapezoid is an open end, the longitudinal connector comprises a first casing in an annular cylinder shape, an upper gear ring and a lower gear ring are rotatably connected inside the first casing, a plurality of driving wheels are meshed between the two gear rings together, one of the driving wheels is coaxially connected with a driving rod, the driving rod extends out of the first casing, one sides of the upper gear ring and the lower gear ring, which are far away from the driving wheels, are rotatably connected with a plurality of uniformly distributed jacking blocks, each jacking block is rotatably connected with a first arc-shaped embracing plate, and the jacking block connected with the upper gear ring and the jacking block connected with the lower gear ring are inclined towards opposite directions in a non-working state; the transverse connector comprises a second shell with a rectangular cross section, a cylindrical hole is formed in the middle of the second shell, first sliding grooves which are collinear with the diameter of the cylindrical hole are uniformly formed in the upper surface of the second shell, a first connecting rod is rotatably connected to one side, far away from the cylindrical hole, in the first sliding grooves, the other end of the first connecting rod is rotatably connected with a second connecting rod, the other end of the second connecting rod is rotatably connected with a first sliding block, and the first sliding block is fixedly connected with an arc-shaped second plywood; the heavy groove has been seted up on four lateral surfaces of second casing, the higher authority in heavy groove and the one side that deviates from the cylinder hole are open, and heavy inslot fixed is equipped with a trapezoidal piece, and the breach on trapezoidal piece and the steel pipe cooperatees.

Preferably, the drive rod stretches out first casing and fixedly connected with turbine, and the turbine still meshes the worm, still fixed being equipped with the guard shield outside the first casing, the turbine is located the guard shield with the worm, the both ends of worm stretch out the guard shield and rotate with the guard shield and be connected, the equal fixedly connected with knob in both ends of worm.

Preferably, the upper surface of the first shell is fixedly connected with an annular upper cover plate, the lower surface of the first shell is fixedly connected with an annular lower cover plate, the upper cover plate and the lower cover plate are fixedly provided with a plurality of baffle plates, the baffle plates are vertical and correspond to the ejector blocks one by one, and the ejector blocks are in contact with the baffle plates when located at the working positions.

Preferably, a plurality of fixed shafts are further fixedly arranged in the first shell, and the driving wheels which are not connected with the transmission rod are rotatably connected to the fixed shafts.

Preferably, the joint of the first link and the second link is further rotatably connected with a pressing part.

Preferably, an elastic member is fixedly arranged in the middle of the second connecting rod.

Preferably, the second spout has been seted up on four lateral surfaces of second casing, the second spout is the arc wall and passes heavy groove and extend to the opposite side of heavy groove by one side of heavy groove, the inner arc of second spout is towards the bottom surface direction of heavy groove, sliding connection has the third of being located heavy groove one side to embrace the plywood in the second spout, the spacing groove has been seted up on the third embraces the plywood, the fixed first push rod that is equipped with of one end of plywood, the concave recess that is located heavy groove opposite side that is equipped with on the second casing, elastic connection has spacing post in the recess, spacing post cooperatees with the spacing groove, fixedly connected with second push rod on the spacing post.

Preferably, still be equipped with four strengthening mechanisms on the lateral connector, strengthening mechanism is equipped with the layer board including being located heavy inslot, and the layer board below is equipped with vertical clamp plate, sliding connection about clamp plate and the second casing, and the bottom of clamp plate is rotated and is connected with the one end of lever, and the middle part of lever is rotated with the bottom of second casing and is connected, and the one end that the lever deviates from the clamp plate is rotated and is connected with the second slider, lateral connector still includes the round platform base, and the bottom of second casing is seted up the shape chamfer of hopper that falls unanimous with the side inclination of round platform base, and four fourth spouts have been seted up to the bottom of round platform base, second slider and fourth spout sliding connection.

The invention has the beneficial effects that:

1. compared with the prior art, the structure has the structural characteristics of no scattered parts, and parts or fasteners are not easy to lose;

2. no matter the longitudinal connector or the transverse connector is adopted to connect the steel pipes in a butt joint mode, the lapping phenomenon is avoided, the connection is firmer, and the construction specification of the scaffold engineering is better met;

3. the internal mechanism is skillfully arranged, the external operation is simple, the construction method is suitable for quick field construction, and the construction period is shortened;

4. the steel pipe does not have welded structure, and the tip is seted up the breach and is not influenced the steel pipe later stage and be applied to other overlap joint forms, and the reuse rate is high.

Drawings

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of a longitudinal connector;

FIG. 3 is a schematic view of the first hugging plate in a hugging state;

fig. 4 is an internal structural view of the first housing;

FIG. 5 is a schematic view of a cross connector;

FIG. 6 is a front view of the lateral connector;

FIG. 7 is a cross-sectional view of a front view of the transconnector;

fig. 8 is a schematic view showing a clamped state and an unclamped state of the second hugging plate.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1-8, a construction frame for building, comprising a steel pipe 1, a longitudinal connector 2 and a transverse connector 3, characterized in that, two ends of the steel pipe 1 are provided with isosceles trapezoid gaps 101, the upper base of the isosceles trapezoid is an open end, i.e. the open end of the gap 101 is the short side of the isosceles trapezoid, the long side of the isosceles trapezoid deviates from the adjacent end, the steel pipe 1 is divided into a vertical rod and a horizontal rod according to the different placement positions, the vertical rod is a vertical rod, the horizontal rod is a horizontal rod, the longitudinal connector 2 is used for connecting the two vertical rods, the transverse connector 3 is used for connecting the vertical rod and the horizontal rod, the longitudinal connector 2 comprises a first casing 201 in the shape of a ring cylinder, an upper gear ring 202 and a lower gear ring 203 are rotatably connected inside the first casing 201, a plurality of transmission wheels 204 are jointly engaged between the two gear rings, the teeth of the upper gear ring 202 are opposite to the teeth of the lower, the transmission rod 205 extends out of the first shell 201, a constructor controls the rotation of the two gear rings by rotating the transmission rod 205, one sides of the upper gear ring 202 and the lower gear ring 203 departing from the transmission wheel 204 are both rotatably connected with a plurality of uniformly distributed jacking blocks 209, each jacking block 209 is rotatably connected with a circular arc-shaped first cohesion plate 210, the jacking blocks 209 connected with the upper gear ring 202 and the jacking blocks 209 connected with the lower gear ring 203 are inclined towards opposite directions in a non-working state, the jacking blocks 209 are preferably in a waist-shaped structure or a disc-shaped cam-shaped structure, the connection points of the jacking blocks 209 and the upper gear ring 202 or the lower gear ring 203 and the connection points of the jacking blocks 209 and the first cohesion plates 210 are positioned in the same horizontal plane, the inner arc surfaces of the first cohesion plates 210 are opposite, when the upper gear ring 202 and the lower gear ring 203 rotate, the first cohesion plates 210 can move along with the jacking blocks 209, but when the collinear state is obstructed by the upright rod, the jacking blocks, the pressure of the first locking plate 210 on the vertical rod is increased, the clamping effect on the vertical rod is realized by simultaneously exerting force on a plurality of locking plates, the upper gear ring 202 and the lower gear ring 203 are driven by the same transmission wheel 204, and the directions are opposite, so that the top block 209 connected with the upper gear ring 202 and the top block 209 connected with the lower gear ring 203 need to be inclined in opposite directions in a non-working state; the transverse connector 3 comprises a second shell 301 with a rectangular cross section, a cylindrical hole 302 is formed in the middle of the second shell 301, the diameter of the cylindrical hole 302 is larger than that of the steel pipe 1, first sliding grooves 303 collinear with the diameter of the cylindrical hole 302 are uniformly formed in the upper surface of the second shell 301, preferably, the upper surface of the second shell 301 is square, a first connecting rod 304 is rotatably connected to one side, far away from the cylindrical hole 302, in the first sliding grooves 303, a second connecting rod 305 is rotatably connected to the other end of the first connecting rod 304, a first sliding block 306 is rotatably connected to the other end of the second connecting rod 305, the first sliding block 306 is fixedly connected with an arc-shaped second locking plate 307, the inner arc surfaces of the second locking plates 307 are opposite, a crank sliding block mechanism is formed among the first connecting rod 304, the second connecting rod 305 and the first sliding block 306, and when a connection point between the first connecting rod 304 and the second connecting rod 305 is pressed, the first connecting rod, the first sliding block 306 is used as a driven part to move towards the vertical rod until the first connecting rod 304 and the second connecting rod 305 are collinear, the external force is removed, at this time, the first connecting rod 304 loses power, the pressure of the vertical rod on the first sliding block 306 enables the first sliding block 306 to be changed from the driven part into a driving part, and in the slider-crank mechanism, the sliding block as the driving part can have two dead point positions, namely two positions where the first connecting rod 304 and the second connecting rod 305 are collinear, so that the sliding block cannot retreat and relax no matter how much force is applied to the second locking plate 307 by the vertical rod, and the purpose of clamping the vertical rod is achieved; sunken groove 309 has been seted up on four lateral surfaces of second casing 301, sunken groove 309 the higher authority with deviate from the one side of cylindrical hole 302 open, sunken groove 309 internal fixation is equipped with a trapezoidal piece 310, trapezoidal piece 310 cooperatees with breach 101 on the steel pipe 1. Namely, the upper bottom edge of the trapezoid block 310 is connected with the second shell 301, the lower bottom edge deviates from the second shell 301, the notch 101 is matched with the trapezoid block 310 to prevent the cross rod from falling off the transverse connector 3, the cross rod mainly bears downward pressure in the using process and needs to be transversely positioned, after the notch 101 is matched with the trapezoid block 310, the trapezoid block 310 is wholly positioned in the notch 101, and the cross rod cannot fall off the sink groove 309 under the actions of horizontal tension, torsion and downward pressure; in addition, the limiting capacity of one notch 101 is limited, a single notch 101 and the trapezoidal block 310 are in line contact or very little surface contact, the contact part is accelerated to be worn due to overlarge local friction force, in order to improve the service life of the device and the stability of limiting, the notches 101 at the same end of the steel pipe 1 are preferably arranged to be two symmetrical notches 101, the height of the trapezoidal block 310 is more than or equal to the diameter of the used steel pipe 1, the two notches 101 at the same end of the steel pipe 1 are simultaneously limited by the trapezoidal block 310 when the steel pipe 1 is placed in the sinking groove 309, the diameter of the steel pipe 1 of the common construction frame specified by the national standard is 33mm, 38mm, 42mm, 48mm and 60mm, and therefore, the height of the trapezoidal block 310 is more than or equal to.

The transmission rod 205 extends out of the first shell 201 and is fixedly connected with a worm wheel 206, the worm wheel 206 is further meshed with a worm 207, a shield 215 is further fixedly arranged outside the first shell 201, the worm wheel 206 and the worm 207 are located in the shield 215, two ends of the worm 207 extend out of the shield 215 and are rotatably connected with the shield 215, and two ends of the worm 207 are fixedly connected with knobs 208. The transmission rod 205 is directly used for driving and needs to have self-locking performance, so a worm gear 207 mechanism is arranged on the transmission rod 205, when the lead angle of the worm 207 is smaller than the equivalent friction angle between the meshing worm wheels 206, the worm wheel 206 and the worm 207 mechanism have self-locking performance, a constructor rotates the worm 207 by rotating the knob 208, the worm 207 drives the worm wheel 206 to further realize control over the top block 209, and the shield 215 plays a role in protecting the worm gear 207 mechanism.

The upper surface of the first shell 201 is fixedly connected with an annular upper cover plate 211, the lower surface of the first shell 201 is fixedly connected with an annular lower cover plate 212, the upper cover plate 211 and the lower cover plate 212 are respectively and fixedly provided with a plurality of baffle plates, the baffle plates are vertical and are in one-to-one correspondence with the ejecting blocks 209, and the ejecting blocks 209 are in contact with the baffle plates when located at working positions. The kicking block 209 is by compressing tightly first cohesion plate 210 gradually at the rotation in-process, to with pole setting diameter collineation, continue to rotate again and will reduce the pressure to first cohesion plate 210 gradually, in order to carry on spacingly to the kicking block 209, make the kicking block 209 rotate the maximum position of application of force just can not rotate again, add on upper cover plate 211 and lower cover plate 212 and established the baffle that is used for injecing the kicking block 209 position, improve constructor's operation convenience.

A plurality of fixed shafts 214 are further fixedly arranged in the first housing 201, and the driving wheels 204 which are not connected with the driving rods 205 are rotatably connected to the fixed shafts 214. One of the pulleys 204 may be a power transmission member, and the remaining pulleys 204 are held by a fixed shaft 214 so as not to rotate following the upper ring gear 202 and the lower ring gear 203.

The pressing portion 308 is rotatably connected to the joint between the first link 304 and the second link 305. The installation department makes things convenient for the personnel of setting up to operate, pushes down pressing portion 308 and presss from both sides tight operation, lifts pressing portion 308 and relaxs the operation.

An elastic member is fixedly arranged in the middle of the second connecting rod 305. In order to adapt to the sizes of different steel pipes 1, the second connecting rods 305 need to be set to be telescopic rods, so that each second locking plate 307 can realize the function of floating clamping, and the elastic members are not limited to springs, rubber layers and elastic gaskets, and can stretch and contract in the directions close to and away from the vertical rod.

Seted up second spout 311 on four lateral surfaces of second casing 301, second spout 311 is the arc wall and passes heavy groove 309 and extend to the opposite side of heavy groove 309 by one side of heavy groove 309, the inner arc of second spout 311 is towards the bottom surface direction of heavy groove 309, sliding connection has the third armful of plywood 312 that is located heavy groove 309 one side in the second spout 311, spacing groove 314 has been seted up on the third armful of plywood 312, the fixed first push rod that is equipped with of one end of third armful of plywood 312, the concave recess that is located heavy groove 309 opposite side that is equipped with on second casing 301, elastic connection has spacing post 315 in the recess, spacing post 315 cooperatees with spacing groove 314, fixedly connected with second push rod on the spacing post 315. The second sliding groove 311 is an arc-shaped groove, so the third locking plate 312 is also arc-shaped, the first push rod and the second push rod are arranged on the outer side of the second shell 301, the cross rod is placed in the sinking groove 309, then the first push rod is pushed, the third locking plate 312 bypasses the cross rod and enters the second sliding groove 311 on the other side of the sinking groove 309, the limiting column 315 is preferably in up-and-down elastic sliding connection with the groove, and the limiting groove 314 is embedded with the limiting column 315 to limit the resetting of the third locking plate 312; the cross bar is not forced upwards during normal work, so that the downward pressing operation of the cross bar is not needed, the third clasping plate 312 is used for preventing the cross bar from being accidentally released, and the third clasping plate 312 can release the limitation on the cross bar only after the second push block 316 is pushed to enable the limiting column 315 to leave the limiting groove 314 by overcoming the elastic force; in addition, in order to prevent the third locking plate 312 from interfering with the trapezoidal block 310 during the rotation process, the third sliding groove 317 through which the third locking plate 312 passes is not limited to be formed in the trapezoidal block 310.

Still be equipped with four strengthening mechanism 4 on the lateral connector 3, strengthening mechanism 4 is equipped with layer board 401 including being located heavy groove 309, and layer board 401 below is equipped with vertical clamp plate 402, and slide connection about clamp plate 402 and the second casing 301, the bottom of clamp plate 402 rotate the one end that is connected with lever 403, and the middle part of lever 403 rotates with the bottom of second casing 301 to be connected, and the one end that lever 403 deviates from clamp plate 402 rotates and is connected with second slider 405, lateral connector 3 still includes round platform base 406, and the bottom of second casing 301 is seted up the constant hourglass hopper-shaped chamfer of side inclination with round platform base 406, and four fourth spouts 404 have been seted up to the bottom of round platform base 406, second slider 405 and fourth spout 404 sliding connection. The structure of the supporting plate 401 is not limited, and the supporting plate 401 may be an arc or a flat plate with an upward inner arc, when a cross bar is placed in the sinking groove 309, the cross bar presses on the supporting plate 401 to press the supporting plate 401 downward, the supporting plate 401 presses one end of the lever 403 through the pressing plate 402, the other end of the lever 403 lifts the circular table base 406 upward, the circular table base 406 and the second shell 301 are pressed, rubbed and locked to play a role in assisting in clamping the vertical rod, that is, the larger the pressure borne by the cross bar is, the larger the holding force of the circular table base 406 to the vertical rod is, and after the cross bar is unloaded, the second shell 301 is lifted upward, and the circular table base 406 moves downward to; the circular truncated cone base 406 is composed of four parts, and each part gathers together when moving upwards and separates when moving downwards.

When the connector is used and connected with the vertical rods, the connecting ends of the two vertical rods are placed in the longitudinal connector 2, the knob 208 is screwed, the worm gear 207 drives the upper gear ring 202 and the lower gear ring 203 to rotate in the constant speed and the reverse direction, the inclined top block 209 is gradually straightened and extrudes the first locking plate 210, the first locking plate 210 driven by the upper gear ring 202 clamps one vertical rod, the first locking plate 210 driven by the lower gear ring 203 clamps the other vertical rod, and the looseness cannot occur under the self-locking action of the worm gear 207; when the cross rod is connected, the transverse connector 3 is firstly sleeved on a vertical rod, one surface with the reinforcing mechanism 4 faces downwards, the pressing part 308 is pressed downwards to enable the first connecting rod 304 and the second connecting rod 305 to be located in the same horizontal plane, the second locking plate 307 clamps the vertical rod tightly, then the notch 101 at one end of the cross rod is aligned to the trapezoidal block 310 and is prevented from being arranged on the supporting plate 401 from top to bottom, at the moment, the circular table base 406 is jacked upwards under the action of the lever 403 and is squeezed and rubbed with the second shell 301 to further clamp the vertical rod tightly, and finally the first pushing block 313 is pushed to enable the three locking plates to be buckled above the cross rod to prevent the cross rod from being accidentally separated.

The invention has the beneficial effects that:

The above-mentioned embodiments do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should be included in the protection scope defined by the claims of the present invention without departing from the design concept of the present invention.

Claims

1. The utility model provides a construction frame, includes steel pipe (1), vertical connector (2) and transverse connection ware (3), its characterized in that, isosceles trapezoid's breach (101) are seted up at the both ends of steel pipe (1), and isosceles trapezoid's last base is open end, vertical connector (2) are including first casing (201) of ring cylinder form, and first casing (201) inside is rotated and is connected with ring gear (202) and lower ring gear (203), and it has a plurality of drive wheels (204) to mesh jointly between two ring gears, and one of them drive wheel (204) coaxial coupling has transfer line (205), and first casing (201) are stretched out in transfer line (205), go up ring gear (202) and lower ring gear (203) and all rotate the kicking block (209) that are connected with a plurality of equipartitions on the one side that deviates from drive wheel (204), and each kicking block (209) all rotate and are connected with circular-arc first armful plywood (210), kicking block (209) that kicking block (209) and lower ring gear (203) that go up ring The working state is inclined towards the opposite direction; the transverse connector (3) comprises a second shell (301) with a rectangular cross section, a cylindrical hole (302) is formed in the middle of the second shell (301), first sliding grooves (303) which are collinear with the diameter of the cylindrical hole (302) are uniformly formed in the upper surface of the second shell (301), a first connecting rod (304) is rotatably connected to one side, far away from the cylindrical hole (302), in the first sliding grooves (303), the other end of the first connecting rod (304) is rotatably connected with a second connecting rod (305), the other end of the second connecting rod (305) is rotatably connected with a first sliding block (306), and the first sliding block (306) is fixedly connected with an arc-shaped second locking plate (307); sunken groove (309) have been seted up on four lateral surfaces of second casing (301), sunken groove (309) the higher authority with deviate from the one side of cylinder hole (302) open, sunken groove (309) internal fixation is equipped with a trapezoidal piece (310), breach (101) on trapezoidal piece (310) and steel pipe (1) cooperate.

2. The construction frame as claimed in claim 1, wherein the driving rod (205) extends out of the first housing (201) and is fixedly connected with a turbine (206), the turbine (206) is further engaged with a worm (207), the first housing (201) is further fixedly provided with a shield (215), the turbine (206) and the worm (207) are positioned in the shield (215), two ends of the worm (207) extend out of the shield (215) and are rotatably connected with the shield (215), and two ends of the worm (207) are both fixedly connected with knobs (208).

3. The construction frame as claimed in claim 1, wherein an annular upper cover plate (211) is fixedly connected to the upper surface of the first shell (201), an annular lower cover plate (212) is fixedly connected to the lower surface of the first shell (201), a plurality of baffle plates are fixedly arranged on the upper cover plate (211) and the lower cover plate (212), the baffle plates are vertical and correspond to the top blocks (209) one by one, and the top blocks (209) are in contact with the baffle plates when located at the working position.

4. A construction frame according to claim 1 or 3, wherein a plurality of fixed shafts (214) are further fixed in the first housing (201), and the driving wheels (204) which are not connected with the driving rods (205) are rotatably connected with the fixed shafts (214).

5. A construction frame according to claim 1, wherein the connection between the first (304) and second (305) links is further pivotally connected with a pressing portion (308).

6. A construction frame according to claim 5, wherein an elastic member is fixedly provided in the middle of the second connecting rod (305).

7. Seted up second spout (311) on four lateral surfaces of second casing (301), second spout (311) are the arc wall and pass heavy groove (309) and extend to the opposite side of heavy groove (309) by one side of heavy groove (309), the inner arc of second spout (311) is towards the bottom surface direction of heavy groove (309), sliding connection has third armful plywood (312) that is located heavy groove (309) one side in second spout (311), spacing groove (314) have been seted up on third armful plywood (312), the fixed first push rod that is equipped with of one end of third armful plywood (312), the concave recess that is located heavy groove (309) opposite side is equipped with on second casing (301), elastic connection has spacing post (315) in the recess, spacing post (315) and spacing groove (314) cooperate, fixedly connected with second push rod on spacing post (315).

8. The construction scaffold as claimed in claim 1 or 6, wherein the cross connector (3) is further provided with four reinforcing mechanisms (4), each reinforcing mechanism (4) comprises a supporting plate (401) arranged in a sinking groove (309), a vertical pressing plate (402) is arranged below the supporting plate (401), the pressing plate (402) is connected with the second shell (301) in a vertical sliding manner, the bottom of the pressing plate (402) is rotatably connected with one end of a lever (403), the middle part of the lever (403) is rotatably connected with the bottom of the second shell (301), one end of the lever (403) away from the pressing plate (402) is rotatably connected with a second slider (405), the cross connector (3) further comprises a circular truncated cone base (406), the bottom of the second shell (301) is provided with an inverted funnel-shaped chamfer consistent with the side surface inclination angle of the circular truncated cone base (406), the bottom of the circular truncated cone base (406) is provided with four fourth sliding grooves (404), the second sliding block (405) is connected with the fourth sliding chute (404) in a sliding mode.