A connecting device for a vertical pole of a scaffolding

Abstract

The application discloses a connecting device of a vertical rod for building a roof truss, relates to the field of roof truss part structures, and solves the problem that a diagonal pull rod cannot be adapted to inner vertical rods and outer vertical rods with different installation intervals because the interval of the reserved installation holes on the inner vertical rods and the outer vertical rods is not fixed, and the length of the diagonal pull rod is fixed, and the connecting device comprises an inner vertical rod, and a diagonal pull rod structure for strengthening the connection strength between the inner vertical rod and an outer vertical rod is arranged on the outer side of the inner vertical rod and the outer vertical rod; the diagonal pull rod structure is arranged, a locking assembly is arranged in the diagonal pull rod structure, and the diagonal pull rod structure can be adapted to the installation of the inner vertical rods and the outer vertical rods with different installation intervals; the positioning structure is arranged between the diagonal pull rod structure and the inner vertical rod and the outer vertical rod, the diagonal pull rod structure can be quickly positioned and installed, and the diagonal pull rod can be effectively prevented from being separated from the inner vertical rod and the outer vertical rod during use.

Description

Technical Field

[0001] This invention relates to the field of cantilever frame component structure, specifically a connecting device for the uprights used in cantilever frame construction. Background Technology

[0002] Cantilever scaffolding, also known as suspended scaffolding, is generally constructed by cantilevering steel sections and then erecting scaffolding on top of them. Scaffolding refers to various supports erected on construction sites to facilitate worker operations and solve vertical and horizontal transportation issues. It is a common term in the construction industry, referring to scaffolding used on construction sites for exterior walls, interior decoration, or in areas with high ceilings where direct construction is not feasible.

[0003] The main structure of the existing cantilever scaffold consists of inner uprights, outer uprights with an outer protective net, and a footboard. To enhance the connection strength between the inner and outer uprights, diagonal braces are usually installed at the top of the inner and outer uprights. However, in the existing installation process, the diagonal braces are fixed to the inner and outer uprights with bolts. Pre-drilled installation holes are made on the inner and outer uprights, but because the spacing of the pre-drilled installation holes on the inner and outer uprights is not fixed, while the length of the diagonal brace is fixed, the diagonal brace cannot be adapted to inner and outer uprights with different installation spacings. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforced diagonal brace for erecting cantilever scaffolds with adjustable length, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A connecting device for uprights used in cantilever scaffolding includes an inner upright and an outer upright. An outer upright is installed on the outer side of the inner upright. A diagonal brace structure for strengthening the connection between the inner and outer uprights is installed on the outer side of the inner and outer uprights. The diagonal brace structure includes an embedded rod. A locking component for locking the length of the diagonal brace structure is installed inside the embedded rod. Two symmetrically distributed positioning structures are installed at the connection between the outer side of the diagonal brace structure and the inner and outer uprights.

[0007] Preferably, the two ends of the embedded rod are respectively movably sleeved with a left sleeve rod and a right sleeve rod, and the right sleeve rod and the right sleeve rod are the same shape and size and are symmetrically distributed. Four sets of symmetrically distributed limiting blocks are fixedly installed on the outer side of the embedded rod near both ends, and the limiting blocks are slidably connected to the left sleeve rod and the right sleeve rod through limiting straight grooves. The interior of the embedded rod has an upper toothed plate and a lower toothed plate respectively, and the cross-sectional shape of the embedded rod, the left sleeve rod and the right sleeve rod are all rectangular.

[0008] Preferably, the upper toothed plate and the lower toothed plate are connected to the inner rod in a sliding connection manner. The right end of the upper toothed plate is fixedly connected to the right sleeve rod, and the left end of the lower toothed plate is fixedly connected to the left sleeve rod. Two symmetrically distributed gears are installed between the upper toothed plate and the lower toothed plate, and the two gears are connected to the upper toothed plate and the lower toothed plate in a meshing connection manner. The upper toothed plate and the lower toothed plate are the same in shape and size, and the gears enable the upper toothed plate and the lower toothed plate to move together.

[0009] Preferably, the locking assembly includes a positioning bolt that passes through the inner rod and the gear, and the positioning bolt is connected to both the inner rod and the gear in a movable manner. A threaded connecting seat is fixedly installed on the outer side of the inner rod at the center of the gear, and the positioning bolt is connected to the threaded connecting seat in a threaded manner. Two symmetrically distributed connecting ropes are fixedly connected on the outer side of the positioning bolt between the two gears. The connecting ropes are made of steel wire rope.

[0010] Preferably, a first compression block is fixedly connected to the end of the connecting rope away from the positioning bolt. A first spring is fixedly installed at the end of the first compression block away from the connecting rope, and the end of the first spring is fixedly connected to the inner rod at the end away from the first compression block. Two symmetrically distributed short connecting rods are installed on the outer side of the first compression block inside the inner rod, and the short connecting rods can move laterally inside the inner rod. An inclined cut is provided at the end of the short connecting rod near the first compression block, and a support is fixedly installed at the end of the short connecting rod away from the first compression block. The inclined cut facilitates the separation of the two short connecting rods by the first compression block.

[0011] Preferably, a rubber block is fixedly embedded on the end face of the support away from the short connecting rod. Several sets of equidistant protrusions are fixedly provided on the inner walls of the front and rear sides of the left and right sleeve rods. The connection between the rubber block and the protrusions is a movable abutment. A second spring is fixedly installed on the end face of the support facing the short connecting rod, and the second spring is movably sleeved on the outside of the short connecting rod. The end of the second spring away from the support is fixedly connected to the inner rod. The protrusions can increase the friction between the rubber block and the inner walls of the left and right sleeve rods.

[0012] Preferably, the positioning structure includes a positioning pin fixedly embedded in the left sleeve rod and the right sleeve rod at the end away from the inner sleeve rod, and the positioning pin is plugged and pulled connected to the inner upright rod and the outer upright rod through a reserved mounting hole. The positioning pin has a movable mounting seat that can move left and right inside it. Two symmetrically distributed limiting baffles are hinged on the outer side of the mounting seat. When the limiting baffles open, they can prevent the positioning pin from disengaging from the inner upright rod and the outer upright rod.

[0013] Preferably, the surface of the limiting baffle is provided with several sets of anti-slip protrusions distributed at equal intervals. A positioning shaft passes through the inside of each anti-slip protrusion, and the limiting baffle is rotatably connected to the mounting base through the positioning shaft. The limiting baffle can only rotate 90° through the positioning shaft. Two symmetrically distributed coil springs are fixedly sleeved on the outer side of the positioning shaft on the upper and lower sides of the limiting baffle, and one end of the coil spring is fixedly connected to the mounting base. The coil spring can drive the limiting baffle to rotate and reset. A screw passes through the center of the mounting base, and the connection between the screw and the mounting base is a threaded connection.

[0014] Preferably, the connection between the screw and the positioning pin is a rotary connection. Two symmetrically distributed protrusions are fixedly installed on the outer side of the mounting base, and the protrusions are slidably connected to the positioning pin through limiting straight grooves. The protrusions help to prevent the mounting base from rotating with the screw when the screw is rotated. A countersunk nut is fixedly installed at one end of the screw, and the countersunk nut is movably embedded in the end of the positioning pin.

[0015] Preferably, the inner rod has a cylindrical pre-reserved groove at the two gears, and the two ends of the cylindrical pre-reserved groove are respectively in contact with the end faces of the two gears. The width of the tooth groove on the upper tooth plate and the lower tooth plate is equal to the width of a single gear. The cylindrical pre-reserved groove facilitates the rotation of the two gears inside the inner rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, by setting up a diagonal tie rod structure and installing a locking component inside the diagonal tie rod structure, allows the left and right sleeve rods in the diagonal tie rod structure to be connected to two gears via an upper toothed plate and a lower toothed plate, respectively. This enables the left and right sleeve rods to be symmetrically pulled apart on the inner rod. After adjusting the distance between the left and right sleeve rods, the locking structure locks the inner rod, left sleeve rod, and right sleeve rod, allowing the length of the diagonal tie rod structure to be arbitrarily adjusted. This facilitates the diagonal tie rod structure to be adapted to the installation of inner and outer uprights with different installation spacings.

[0018] 2. This invention installs a positioning structure between the tie rod structure and the inner and outer uprights. When assembling the tie rod structure with the inner and outer uprights using the positioning structure, simply insert the positioning pin into the pre-drilled mounting holes on the inner and outer uprights, and then rotate the screw to open the limiting baffle. This not only allows for quick positioning and installation of the tie rod structure, but also effectively prevents the tie rod from detaching from the inner and outer uprights during use. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the tie rod of the present invention;

[0021] Figure 3 This is a side sectional view of the tie rod structure of the present invention;

[0022] Figure 4 This is a schematic diagram showing the internal structure of the embedded rod of the present invention.

[0023] Figure 5 For the present invention Figure 3 A magnified diagram showing the splitting of A in the middle;

[0024] Figure 6 This is a cross-sectional view of the midpoint of the embedded rod of the present invention;

[0025] Figure 7 This is a cross-sectional view of the positioning structure of the present invention;

[0026] Figure 8 This is a cross-sectional view of the positioning structure of the present invention.

[0027] In the diagram: 1. Inner upright; 2. Outer upright; 3. Diagonal tie rod structure; 301. Embedded rod; 302. Left sleeve rod; 303. Right sleeve rod; 304. Limiting block; 305. Upper toothed plate; 306. Lower toothed plate; 307. Gear; 4. Locking assembly; 401. Positioning bolt; 402. Threaded connection seat; 403. Connecting rope; 404. First compression block; 405. First spring connection; 406. Short connecting rod; 407. Support seat; 408. Rubber block; 409. Second spring; 5. Positioning structure; 501. Positioning pin; 502. Mounting seat; 503. Limiting baffle; 504. Anti-slip convex strip; 505. Positioning shaft; 506. Coil spring; 507. Screw; 508. Protrusion; 509. Countersunk nut; 6. Convex tooth. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The diagram shows a connecting device for the uprights used in the construction of a cantilever scaffold, including an inner upright 1, an outer upright 2 installed on the outer side of the inner upright 1, and a diagonal brace structure 3 installed on the outer side of the inner upright 1 and the outer upright 2 to strengthen the connection between the inner upright 1 and the outer upright 2. The diagonal brace structure 3 includes an embedded rod 301, and a locking component 4 for locking the length of the diagonal brace structure 3 is installed inside the embedded rod 301. Two symmetrically distributed positioning structures 5 are installed at the connection between the outer side of the diagonal brace structure 3 and the inner upright 1 and the outer upright 2.

[0031] Please see Figure 3 The inner rod 301 has a left sleeve rod 302 and a right sleeve rod 303 movably sleeved at both ends, and the right sleeve rod 303 and the right sleeve rod 303 are the same in shape and size and are symmetrically distributed. Four sets of symmetrically distributed limiting blocks 304 are fixedly installed on the outer side of the inner rod 301 near both ends, and the limiting blocks 304 are slidably connected to the left sleeve rod 302 and the right sleeve rod 303 through limiting straight grooves. The inner rod 301 has an upper toothed plate 305 and a lower toothed plate 306 passing through it.

[0032] Please see Figure 3 The upper toothed plate 305 and the lower toothed plate 306 are connected to the inner rod 301 by a sliding connection. The right end of the upper toothed plate 305 is fixedly connected to the right sleeve rod 303, and the left end of the lower toothed plate 306 is fixedly connected to the left sleeve rod 302. Two symmetrically distributed gears 307 are installed between the upper toothed plate 305 and the lower toothed plate 306, and the two gears 307 are connected to the upper toothed plate 305 and the lower toothed plate 306 by a meshing connection. The upper toothed plate 305 and the lower toothed plate 306 are the same in shape and size.

[0033] Please see Figure 5 The locking component 4 includes a positioning bolt 401 that passes through the inner rod 301 and the gear 307. The positioning bolt 401 is connected to both the inner rod 301 and the gear 307 in a movable manner. A threaded connecting seat 402 is fixedly installed on the outer side of the inner rod 301 at the center of the gear 307. The positioning bolt 401 is connected to the threaded connecting seat 402 in a threaded manner. Two symmetrically distributed connecting ropes 403 are fixedly connected on the outer side of the positioning bolt 401 between the two gears 307.

[0034] Please see Figure 6The end of the connecting rope 403 away from the positioning bolt 401 is fixedly connected to a first pressing block 404. The end of the first pressing block 404 away from the connecting rope 403 is fixedly installed with a first spring connecting 405. The end of the first spring connecting 405 away from the first pressing block 404 is fixedly connected to the inner rod 301. Two symmetrically distributed short connecting rods 406 are installed on the outside of the first pressing block 404 inside the inner rod 301. The short connecting rods 406 can move laterally inside the inner rod 301. An inclined cut is opened at the end of the short connecting rod 406 near the first pressing block 404. A support seat 407 is fixedly installed at the end of the short connecting rod 406 away from the first pressing block 404.

[0035] Please see Figure 6 A rubber block 408 is fixedly embedded on the side end face of the support 407 away from the short connecting rod 406. Several sets of equidistant protrusions 6 are fixedly provided on the inner walls of the left sleeve rod 302 and the right sleeve rod 303. The connection between the rubber block 408 and the protrusions 6 is a movable abutment. A second spring 409 is fixedly installed on the side end face of the support 407 facing the short connecting rod 406, and the second spring 409 is movably sleeved on the outside of the short connecting rod 406. The end of the second spring 409 away from the support 407 is fixedly connected to the inner rod 301.

[0036] The adjustable length working principle of the tie rod: First, the length of the tie rod structure 3 is adjusted by the distance between the inner upright 1 and the outer upright 2. The user holds the inner rod 301 with one hand and moves the right sleeve rod 303 with the other. During the movement of the right sleeve rod 303, the right sleeve rod 303 drives the upper toothed plate 305 to move to the right. With both the upper toothed plate 305 and the lower toothed plate 306 engaged with the gear 307, the movement of the upper toothed plate 305 to the right drives the gear 307 to rotate clockwise. The clockwise rotation of the gear 307 drives the lower toothed plate 306 and the left sleeve rod 302 to move to the left. This allows the distance between the left sleeve rod 302 and the right sleeve rod 303 on the inner rod 301 to be arbitrarily adjusted. This facilitates the installation of the tie rod structure 3 with different installation distances for the inner upright 1 and the outer upright 2. After the length is adjusted, the user rotates the positioning bolt 401 of the through gear 307. With the positioning bolt 401 threadedly connected to the threaded connecting seat 402, the rotation of the positioning bolt 401 causes the two connecting ropes 403 to wind around the positioning bolt 401. When the limiting disc at the end of the positioning bolt 401 abuts against the inner rod 301, the rotation of the positioning bolt 401 is stopped. During the winding process, the two connecting ropes 403 pull the first extrusion block 404 to move between the two short connecting rods 406. During the movement of the first extrusion block 404, the two short connecting rods 406 squeeze the two rubber blocks 408 outwards from the inner rod 301 until the rubber blocks 408 abut against the protruding teeth 6 on the inner walls of the left sleeve rod 302 and the right sleeve rod 303, thereby locking the inner rod 301, the left sleeve rod 302 and the right sleeve rod 303.

[0037] Example 2

[0038] Please see Figure 2 , Figure 7 and Figure 8 This embodiment further explains Example 1. The positioning structure 5 includes a positioning pin 501 fixedly embedded in the left sleeve rod 302 and the right sleeve rod 303 at the end away from the inner sleeve rod 301. The positioning pin 501 is plugged and pulled to the inner upright rod 1 and the outer upright rod 2 through a reserved mounting hole. The positioning pin 501 is movably embedded with a mounting seat 502 that can move left and right. Two symmetrically distributed limiting baffles 503 are hinged on the outer side of the mounting seat 502.

[0039] Please see Figure 8The surface of the limiting baffle 503 is provided with several sets of anti-slip ridges 504 that are evenly distributed. The anti-slip ridges 504 are internally connected to the positioning shaft 505. The limiting baffle 503 is rotatably connected to the mounting base 502 through the positioning shaft 505. Two symmetrically distributed coil springs 506 are fixedly sleeved on the outer side of the positioning shaft 505 on the upper and lower sides of the limiting baffle 503. The outer end of the coil spring 506 is fixedly connected to the mounting base 502. A screw 507 is passed through the center of the mounting base 502. The connection between the screw 507 and the mounting base 502 is a threaded connection.

[0040] Please see Figure 8 The connection between the screw 507 and the positioning pin 501 is a rotatable connection. Two symmetrically distributed protrusions 508 are fixedly installed on the outer side of the mounting base 502, and the protrusions 508 are slidably connected to the positioning pin 501 through the limiting straight groove. A countersunk nut 509 is fixedly installed on one end of the screw 507, and the countersunk nut 509 is movably embedded in the end of the positioning pin 501.

[0041] In this embodiment: when assembling the length-adjusted diagonal brace structure 3 with the inner upright 1 and the outer upright 2, the positioning pins 501 at both ends of the diagonal brace structure 3 are inserted into the reserved mounting holes on the inner upright 1 and the outer upright 2, respectively. During the insertion process, the limiting baffle 503 on the outside of the positioning pin 501 is pressed and moves closer to the positioning pin 501. When the positioning pin 501 completely penetrates the inner upright 1 or the outer upright 2, the limiting baffle 503 will rotate and open under the drive of the coil spring 506. Then, the user uses a tool to rotate the screw 507, and the rotation of the screw 507 drives the mounting base. As the mounting base 502 moves toward the countersunk nut 509, the limiting baffle 503 will first contact the inner upright 1 or the outer upright 2 during the rotation of the mounting base 502. Then, under the pressure of the inner upright 1 or the outer upright 2, it will rotate and open until the two limiting baffles 503 are rotated and opened to 180°. At this time, the side of the two limiting baffles 503 with anti-slip protrusions 504 is tightly fitted with the inner upright 1 or the outer upright 2. This can quickly position and install the diagonal tie rod structure 3, and also effectively prevent the connection between the diagonal tie rod structure 3 and the inner upright 1 and the outer upright 2 from loosening.

[0042] Example 3

[0043] Please see Figure 6 This embodiment further illustrates other embodiments: the inner rod 301 has a cylindrical reserved groove at the two gears 307, and the two ends of the cylindrical reserved groove are movably fitted with the end faces of the two gears 307 respectively. The width of the tooth grooves on the upper tooth plate 305 and the lower tooth plate 306 is equal to the width of a single gear 307.

[0044] In this embodiment: Since the two ends of the cylindrical pre-reserved groove are in movable contact with the end faces of the two gears 307 respectively, and the width of the tooth grooves on the upper tooth plate 305 and the lower tooth plate 306 is equal to the width of a single gear 307, the cylindrical pre-reserved groove and the tooth grooves on the upper tooth plate 305 and the lower tooth plate 306 can limit the two gears 307, which can prevent the two gears 307 from being displaced during the rotation of the positioning bolt 401 when the positioning bolt 401 is rotated.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connecting device for uprights used in scaffolding construction, comprising an inner upright and an outer upright installed on the outer side of the inner upright, characterized in that: An inclined tie rod structure is installed on the outer side of the inner and outer uprights to strengthen the connection between the inner and outer uprights. The inclined tie rod structure includes an embedded rod, and a locking component for locking the length of the inclined tie rod structure is installed inside the embedded rod. Two symmetrically distributed positioning structures are installed at the connection between the outer side of the inclined tie rod structure and the inner and outer uprights. The two ends of the embedded rod are respectively movably sleeved with a left sleeve rod and a right sleeve rod, and the right sleeve rod and the right sleeve rod are the same in shape and size and are symmetrically distributed. Four sets of symmetrically distributed limiting blocks are fixedly installed on the outer side of the embedded rod near the two ends, and the limiting blocks are slidably connected to the left sleeve rod and the right sleeve rod through the limiting straight groove. The inner side of the embedded rod has an upper toothed plate and a lower toothed plate passing through it respectively. The upper and lower gear plates are connected to the inner rod by a sliding connection. The right end of the upper gear plate is fixedly connected to the right sleeve rod, and the left end of the lower gear plate is fixedly connected to the left sleeve rod. Two symmetrically distributed gears are installed between the upper and lower gear plates, and the two gears are connected to the upper and lower gear plates by meshing. The upper and lower gear plates are the same in shape and size. The locking assembly includes a positioning bolt that passes through the inner rod and the gear, and the connection between the positioning bolt and the inner rod and the gear is a movable connection. A threaded connection seat is fixedly installed on the outer side of the inner rod at the center of the gear, and the connection between the positioning bolt and the threaded connection seat is a threaded connection. Two symmetrically distributed connecting ropes are fixedly connected on the outer side of the positioning bolt between the two gears. The end of the connecting rope away from the positioning bolt is fixedly connected to a first compression block. The end of the first compression block away from the connecting rope is fixedly installed with a first spring connector. The end of the first spring connector away from the first compression block is fixedly connected to the inner rod. Two symmetrically distributed short connecting rods are installed on the outside of the first compression block inside the inner rod. The short connecting rods can move laterally inside the inner rod. An inclined cut is opened at the end of the short connecting rod near the first compression block. A support seat is fixedly installed at the end of the short connecting rod away from the first compression block. A rubber block is fixedly embedded on the end face of the support away from the short connecting rod. Several sets of equidistant protrusions are fixedly provided on the inner walls of the front and rear sides of the left and right sleeve rods. The connection between the rubber block and the protrusions is a movable abutment. A second spring is fixedly installed on the end face of the support facing the short connecting rod, and the second spring is movably sleeved on the outside of the short connecting rod. The end of the second spring away from the support is fixedly connected to the inner rod.

2. The connecting device for the uprights used in scaffolding construction according to claim 1, characterized in that: The positioning structure includes a positioning pin fixedly embedded in the left sleeve rod and the right sleeve rod at the end away from the inner rod. The positioning pin is plugged and pulled to the inner and outer upright rods through a reserved mounting hole. The positioning pin has a movable mounting seat that can move left and right. Two symmetrically distributed limit baffles are hinged on the outer side of the mounting seat.

3. The connecting device for the uprights used in scaffolding construction according to claim 2, characterized in that: The surface of the limiting baffle is provided with several sets of anti-slip ridges distributed at equal intervals. The anti-slip ridges are internally connected to a positioning shaft, and the limiting baffle is rotatably connected to the mounting base through the positioning shaft. Two symmetrically distributed coil springs are fixedly sleeved on the outer side of the positioning shaft on the upper and lower sides of the limiting baffle, and the outer end of the coil spring is fixedly connected to the mounting base. A screw rod is inserted through the center of the mounting base, and the connection between the screw rod and the mounting base is a threaded connection.

4. The connecting device for the uprights used in scaffolding construction according to claim 3, characterized in that: The connection between the screw and the locating pin is a rotary connection. Two symmetrically distributed protrusions are fixedly installed on the outside of the mounting base, and the protrusions are slidably connected to the locating pin through a limiting straight groove. A countersunk nut is fixedly installed at one end of the screw, and the countersunk nut is movably embedded in the end of the locating pin.

5. The connecting device for the uprights used in scaffolding construction according to claim 1, characterized in that: The inner rod has cylindrical pre-reserved slots at the two gears. The two ends of the cylindrical pre-reserved slots are movably fitted with the end faces of the two gears respectively. The upper and lower gear plates have tooth grooves with a width equal to the width of a single gear.

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