Rack guide rail and lifting scaffold

Abstract

The present invention proposes a rack guide rail and a lifting scaffold. By setting a guide rail driven by a rack and a gear, the guiding and power transmission directions are well consistent, the installation is convenient, and the rack and gear drive mode is more stable and safer; the rack guide rail adopts an I-shaped channel steel structure, which is convenient for positioning with the load-bearing beam and the wall support mechanism; a pawl is provided to prevent the guide rail from falling without affecting the rising installation of the guide rail; a wedge block and a T-shaped rod are provided to automatically fix the guide rail after it rises to the installation position, which is convenient for installation; a hook is provided to prevent the main beam from falling; a telescopic rod is provided to hinge the top of the movable beam with the main beam, and the load-bearing plate can be automatically adjusted according to the inclination of the building surface to keep it in a horizontal state at all times, which is convenient for construction.

Description

Technical Field

[0001] The present invention relates to the field of lifting scaffolds, and in particular to a rack guide rail and a lifting scaffold. Background Art

[0002] The attached lifting scaffold equipment is a new type of scaffold technology that has developed rapidly at the beginning of this century and has an important impact on the progress of construction technology in China. It changes high-altitude operations into low-altitude operations and suspended operations into operations inside the scaffold, and has remarkable characteristics such as low carbon, high-tech content, more economical, safer and more convenient.

[0003] An attached lifting scaffold refers to an external scaffold that is erected to a certain height and attached to the engineering structure, and can climb or descend layer by layer with the engineering structure by relying on its own lifting equipment and devices, and has anti-overturning and anti-falling devices; the attached lifting scaffold mainly consists of an attached lifting scaffold body structure, a wall-attached support base, an anti-overturning device, an anti-falling device, a lifting mechanism and a control device, etc.

[0004] The existing lifting scaffold guide rails generally adopt I-shaped guide rails. Rollers are installed on the scaffold body or the wall-attached support base, and the rollers are embedded in the grooves on both sides of the I-shaped guide rails to play a role in guiding and supporting. At present, in the field of dams or special buildings, there is a design method with an inclined construction surface. The guide rails with the above structure have the following problems: (1) The rollers cannot conduct force. When the support scaffold rises or falls, an additional power transmission mechanism needs to be set up. The straight-line coincidence degree between the power transmission mechanism and the direction of roller guidance is relatively high, which is not convenient for installation; (2) The pressure between the rollers and the guide rails is too large. After long-term use, the connecting pair of the roller main shafts is prone to deformation, resulting in the scaffold body shaking or breaking, and the stability and safety are not good. Summary of the Invention

[0005] In view of this, the present invention provides a rack guide rail and a lifting scaffold with good consistency in the guiding and power transmission directions, stability and safety.

[0006] The technical solution of the present invention is realized as follows:

[0007] On the one hand, the present invention provides a rack guide rail, which includes a gear (1), a main beam (2) and a straight track body (3). The straight track body (3) includes a straight rack (31). The gear (1) meshes with the straight rack (31) and is rotatably connected to the main beam (2). The main beam (2) is arranged parallel to the straight track body (3).

[0008] Based on the above technical solutions, preferably, the linear track body (3) further includes an I-shaped steel channel (32), the main beam (2) includes a load-bearing beam (21) and a first limiting block (22), a linear groove (33) is formed on the surface of the I-shaped steel channel (32), the linear rack (31) is embedded in the linear groove (33) and fixed to the I-shaped steel channel (32), the first limiting block (22) includes a sliding ring (221), a limiting groove (221) is arranged on the surface of the first limiting block (22), two protruding side edges of the I-shaped steel channel (32) are respectively embedded in the limiting groove (221), the sliding ring (221) is arranged in the limiting groove (221) and is arranged opposite to the protruding side edge of the I-shaped steel channel (32), and the limiting block (22) is fixed to the load-bearing beam (21).

[0009] Further preferably, the main beam (2) includes at least two groups of guide wheels (23), the two groups of guide wheels (23) are respectively arranged on both sides of the load-bearing beam (21) and are rotatably connected thereto, and are in rolling connection with the surface of the I-shaped steel channel (32).

[0010] Further preferably, the main beam (2) includes a second limiting block (24), a lead screw (25) and a support foot (26), the second limiting block (24) includes a collar (241) and an arc-shaped plate (242), the support foot (26) is fixedly connected to the end of the lead screw (25), the collar (241) is fixed to the load-bearing beam (21) and is in threaded connection with the lead screw (25), and the arc-shaped plate (242) is fixed to the collar (241) and abuts against the bottom surfaces of the two protruding side edges of the I-shaped steel channel (32).

[0011] Based on the above technical solutions, preferably, the main beam (2) includes a load-bearing beam (21), a swing block (28) and two pin shafts (29), the load-bearing beam (21) is a hollow structure, the swing block (28) includes an arc-shaped tooth portion (281), a hinged portion (282) and a limiting portion (283) connected in sequence, the arc-shaped tooth portion (281) meshes with the gear (1), the hinged portion (282) is placed inside the load-bearing beam (21) and is rotatably connected thereto, and the two pin shafts (29) are arranged on both sides of the limiting portion (283) and are detachably connected to the load-bearing beam (21).

[0012] In a second aspect, the present invention provides a lifting scaffold, which includes the rack guide rail described in the first aspect of the present invention, and further includes an attached wall support mechanism (4), the linear track body (3) further includes an I-shaped steel channel (32), a linear groove (33) is formed on the surface of the I-shaped steel channel (32), the linear rack (31) is embedded in the linear groove (33) and fixed to the I-shaped steel channel (32), a square groove (34) is formed in the middle of the I-shaped steel channel (32) along the linear direction, the attached wall support mechanism (4) includes an attached wall seat (41) and a pawl (42), the attached wall seat (41) is in rolling connection with the I-shaped steel channel (32), and the pawl (42) is rotatably connected to the attached wall seat (41) and is embedded in the square groove (34).

[0013] On the basis of the above technical solutions, preferably, the wall-attached support mechanism (4) includes two sets of rollers (44) and two arc-shaped sliders (43). The arc-shaped sliders (43) and the rollers (44) are respectively arranged on the upper and lower surfaces of the two protruding side edges at the bottom of the I-shaped steel channel (32). The arc-shaped sliders (43) are fixed to the wall-attached seat (41), and the rollers (44) are rotatably connected to the wall-attached seat (41).

[0014] On the basis of the above technical solutions, preferably, the linear track body (3) further includes a wedge block (35). The side surface of the wedge block (35) is fixed to the I-shaped steel channel (32), and the top side facing the wall-attached seat (41) is set as a wedge surface. The wall-attached support mechanism (4) includes a T-shaped rod (45). The T-shaped rod (45) includes a hinge rod (451) and a limiting rod (452) that are perpendicularly fixed to each other. The hinge rod (451) is rotatably connected to the wall-attached seat (41). One side of the limiting rod (452) abuts against the wall-attached seat (41), and the other side abuts against the bottom surface of the wedge block (35).

[0015] On the basis of the above technical solutions, preferably, the main beam (2) further includes a hook (27). An axial hole (411) is provided on the wall-attached seat (41). The limiting shaft passes through the axial hole (411). One end of the hook (27) is fixed to the main beam (2), and the other end is hooked on the limiting shaft.

[0016] On the basis of the above technical solutions, preferably, it further includes a bracket (5), a movable beam (6) and a telescopic rod (7). The bracket (5) includes a protective plate (51) and a plurality of load-bearing plates (52). The two ends of the plurality of load-bearing plates (52) are perpendicularly fixed to the protective plate (51) and the movable beam (6) respectively. The top of the movable beam (6) is hingedly connected to the main beam (2), and the telescopic rod (7) is hingedly connected to the protective plate (51).

[0017] The rack guide rail and the lifting scaffold of the present invention have the following beneficial effects compared with the prior art:

[0018] (1) By setting a guide rail driven by a rack and a gear, the guiding and power transmission directions are in good agreement, the installation is convenient, the rack and gear driving method is more stable, and the safety is good. It is especially suitable for the construction protection of prefabricated buildings with high installation accuracy;

[0019] (2) Using a rack guide rail with an I-shaped steel channel structure is convenient for positioning with the load-bearing beam and the wall-attached support mechanism;

[0020] (3) By setting a pawl, it can prevent the guide rail from falling without affecting the upward installation of the guide rail;

[0021] (4) By setting a wedge block and a T-shaped rod, it can automatically fix the guide rail after it rises to the installation position, which is convenient for installation;

[0022] (5) Set a hook to prevent the main beam from falling;

[0023] (6) Set a telescopic rod, hinge-connect the top of the movable beam to the main beam, and the load-bearing plate can be automatically adjusted according to the inclination of the building surface to keep it always horizontal for easy construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a three-dimensional view of the lifting scaffold of the present invention;

[0026] Figure 2 It is a side view of the lifting scaffold of the present invention;

[0027] Figure 3 It is a three-dimensional view of the rack guide of the present invention;

[0028] Figure 4 It is a top view of the rack guide of the present invention;

[0029] Figure 5 It is a partial three-dimensional view of the straight track body of the present invention;

[0030] Figure 6 It is a partial three-dimensional view of the straight track body of the present invention;

[0031] Figure 7 It is Figure 4 A partial cross-sectional view in the A-A direction;

[0032] Figure 8 It is Figure 4 A partial cross-sectional view in the B-B direction;

[0033] Figure 9 It is a three-dimensional view of the first limit block part of the present invention;

[0034] Figure 10 It is a three-dimensional view of the wall-attached support mechanism of the present invention;

[0035] Figure 11 It is a three-dimensional view of the wall-attached support mechanism of the present invention;

[0036] Figure 12 It is a three-dimensional view of the ratchet pawl of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] As Figure 1 shown, in combination with Figures 2 to 4 , the rack guide of the present invention includes a gear 1, a main beam 2, and a linear track body 3. In combination with Figure 2 , the lifting scaffold of the present invention includes an attached wall support mechanism 4, a bracket 5, a movable beam 6, and a telescopic rod 7.

[0039] As Figure 5 shown, in combination with Figure 6 , the linear track body 3 includes a linear rack 31, an I-shaped steel channel 32, a linear groove 33, a square groove 34, and a wedge block 35. Among them, the I-shaped steel channel 32 is provided with a linear groove 33 on its surface, the linear rack 31 is embedded in the linear groove 33 and fixed to the I-shaped steel channel 32, a square groove 34 is provided in the middle of the I-shaped steel channel 32 along the linear direction, and the side surface of the wedge block 35 is fixed to the I-shaped steel channel 32. Specifically, the I-shaped steel channel 32 can be formed by welding two steel channels and a strip-shaped steel plate with a square groove 34 opened on its surface along the linear direction, or can be integrally formed.

[0040] As the power transmission part, as Figure 7As shown, the gear 1 meshes with the linear rack 31 and is rotatably connected to the main beam 2. The main beam 2 is arranged parallel to the linear track body 3. Two motors can be selectively connected to the outside of the gear 1. One motor is fixed to the main beam 2, and the other motor is fixed to the linear track body 3. In this way, by connecting the gear 1 to the motor corresponding to the main beam 2 and driving the gear 1 to rotate forward, the linear track body 3 can be driven to rise; by connecting the gear 1 to the motor corresponding to the linear track body 3 and driving the gear 1 to rotate reversely, the main beam 2 can be driven to rise. During the process of driving the main beam 2 to rise relative to the linear track body 3 by the motor, the motor may malfunction and the gear 1 may become stripped, resulting in the fall of the main beam 2 and the bracket 5. To prevent the above situation, the main beam 2 includes a load-bearing beam 21, a swing block 28 and two pin shafts 29. The load-bearing beam 21 is a hollow structure. The swing block 28 includes an arc-shaped tooth portion 281, a hinged portion 282 and a limiting portion 283 connected in sequence. The arc-shaped tooth portion 281 meshes with the gear 1. The hinged portion 282 is placed inside the load-bearing beam 21 and is rotatably connected thereto. The two pin shafts 29 are arranged on both sides of the limiting portion 283 and are detachably connected to the load-bearing beam 21. In this way, before the motor drives the gear 1 to rotate forward or reversely, the pin shaft 29 corresponding to the rotation direction of the swing block 28 is pulled out, so as to prevent the gear 1 from reversing in case of motor failure, thereby preventing the fall.

[0041] As the connecting part between the linear track body 3 and the main beam 2, in order to limit the relative movement of the main beam 2 and the linear track body 3 in the horizontal direction, as Figure 3 shown, combined with Figure 9 , the main beam 2 includes a load-bearing beam 21 and a first limiting block 22. The first limiting block 22 includes a sliding ring 221. A limiting groove 221 is arranged on the surface of the first limiting block 22. The two protruding side edges of the I-shaped steel channel 32 are respectively embedded in the limiting groove 221. The sliding ring 221 is arranged in the limiting groove 221 and is arranged opposite to the protruding side edge of the I-shaped steel channel 32. The limiting block 22 is fixed to the load-bearing beam 21. In this way, the limiting groove 221 can prevent the load-bearing beam 21 from moving in the direction directly opposite to the linear track body 3, and the sliding ring 221 can prevent the load-bearing beam 21 from moving in the left and right directions of the linear track body 3, and play a role in guiding and reducing friction. In order to reduce the moving friction between the load-bearing beam 21 and the linear track body 3 during the relative lifting process, as Figure 3 shown, combined with Figure 8, the main beam 2 includes at least two sets of guide wheels 23, and the two sets of guide wheels 23 are respectively arranged on both sides of the load-bearing beam 21 and rotatably connected thereto, and are in rolling connection with the surface of the I-shaped steel channel 32. Specifically, the main beam 2 further includes a second limit block 24, a lead screw 25 and a support foot 26. The second limit block 24 includes a collar 241 and an arc plate 242. The support foot 26 is fixedly connected to the end of the lead screw 25. The collar 241 is fixed to the load-bearing beam 21 and threadedly connected to the lead screw 25. The arc plate 242 is fixed to the collar 241 and abuts against the bottom surfaces of the two protruding side edges of the I-shaped steel channel 32. In this way, after the height of the main beam 2 is adjusted in place, by adjusting the lead screw 25, the support foot 26 abuts against the wall surface, making the main beam 2 more stable; during the relative lifting and lowering of the load-bearing beam 21 and the linear track body 3, there will inevitably be bumps, and the arc plate 242 can reduce friction.

[0042] The wall-attached support mechanism 4 fixes the wall and the linear track body 3. As Figure 10 shown, in combination with Figure 11 and Figure 12 , it includes a wall-attached seat 41 and a pawl 42. The wall-attached seat 41 is in rolling connection with the I-shaped steel channel 32. The pawl 42 is rotatably connected to the wall-attached seat 41 and is embedded in the square groove 34. In this way, when installing the linear track body 3, the motor drives the I-shaped steel channel 32 to rise, and the pawl 42 disengages from the square groove 34; when the motor or other anti-falling measures fail, the pawl 42 is embedded in the square groove 34 to prevent the linear track body 3 from falling.

[0043] As the connecting part between the linear track body 3 and the wall-attached support mechanism 4, the wall-attached support mechanism 4 includes two sets of rollers 44 and two arc-shaped sliders 43. The arc-shaped sliders 43 and the rollers 44 are respectively arranged on the upper and lower surfaces of the two protruding side edges at the bottom of the I-shaped steel channel 32. The arc-shaped sliders 43 are fixed to the wall-attached seat 41, and the rollers 44 are rotatably connected to the wall-attached seat 41. In this way, when bumps occur during the relative movement between the linear track body 3 and the wall-attached seat 41, the arc-shaped sliders 43 and the rollers 44 can play a role in reducing friction.

[0044] The pawl 42 can play a role in preventing falling during the movement of the linear track body 3. In the stationary state, the force on the pawl 42 is limited. To achieve a better anti-falling effect, the linear track body 3 further includes a wedge block 35. The side surface of the wedge block 35 is fixed to the I-shaped steel channel 32, and the top side facing the wall-attached seat 41 is set as a wedge surface. The wall-attached support mechanism 4 includes a T-shaped rod 45. The T-shaped rod 45 includes a hinge rod 451 and a limiting rod 452 that are perpendicularly fixed to each other. The hinge rod 451 is rotatably connected to the wall-attached seat 41. One side of the limiting rod 452 abuts against the wall-attached seat 41, and the other side abuts against the bottom surface of the wedge block 35. In this way, when the linear track body 3 ascends, the wedge block 35 jacks up the T-shaped rod 45 to make it rotate. When the linear track body 3 moves to the top, the wedge block 35 is located above the T-shaped rod 45. The T-shaped rod 45 drops under the action of gravity and is supported by the wall-attached seat 41. After the linear track body 3 descends a certain distance, the bottom surface of the wedge block 35 abuts against the T-shaped rod 45. In this way, it can bear force for a long time in the stationary state to prevent the linear track body 3 from falling.

[0045] To prevent the main beam 2 from falling, the main beam 2 further includes a hook 27. An axial hole 411 is provided on the wall-attached seat 41. The limiting shaft passes through the axial hole 411. One end of the hook 27 is fixed to the main beam 2, and the other end is hooked on the limiting shaft. In this way, after the main beam 2 rises to the top position, the limiting shaft is inserted and passes through the hook 27 and the axial hole 411 in sequence, which can prevent the main beam 2 from falling under the long-term force-bearing state.

[0046] Considering that during the construction on an inclined building surface, the main beam 2 is in an inclined state. To adjust the standing surface and facilitate the operation, the bracket 5 includes a protective plate 51 and a plurality of load-bearing plates 52. Both ends of the plurality of load-bearing plates 52 are perpendicularly fixed to the protective plate 51 and the movable beam 6 respectively. The top of the movable beam 6 is hingedly connected to the main beam 2. The telescopic rod 7 is hingedly connected to the protective plate 51. In this way, when the telescopic rod 7 extends, it drives the movable beam 6 to rotate around the main beam 2, and the protective plate 51 can be adjusted to the vertical direction and the load-bearing plate 52 can be adjusted to the horizontal state, which is convenient for the construction workers to stand and operate.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rack guide rail, characterized in that: It includes a gear (1), a main beam (2) and a linear track body (3). The linear track body (3) includes a linear rack (31). The gear (1) meshes with the linear rack (31) and is rotatably connected to the main beam (2). The main beam (2) is arranged parallel to the linear track body (3). The main beam (2) includes a load-bearing beam (21), a swing block (28) and two pin shafts (29). The load-bearing beam (21) is a hollow structure. The swing block (28) includes an arc-shaped tooth part (281), a hinge part (282) and a limit part (283) connected in sequence. The arc-shaped tooth part (281) meshes with the gear (1). The hinge part (282) is placed inside the load-bearing beam (21) and is rotatably connected thereto. The two pin shafts (29) are arranged on both sides of the limit part (283) and are detachably connected to the load-bearing beam (21).

2. The rack guide according to claim 1, wherein: The linear track body (3) further includes an I-shaped steel channel (32). The main beam (2) includes a load-bearing beam (21) and a first limit block (22). A linear groove (33) is formed on the surface of the I-shaped steel channel (32). The linear rack (31) is embedded in the linear groove (33) and fixed to the I-shaped steel channel (32). The first limit block (22) includes a sliding ring (221). A limit groove (222) is arranged on the surface of the first limit block (22). The two protruding side edges of the I-shaped steel channel (32) are respectively embedded in the limit groove (222). The sliding ring (221) is arranged in the limit groove (222) and is arranged opposite to the protruding side edge of the I-shaped steel channel (32). The limit block (22) is fixed to the load-bearing beam (21).

3. The rack guide according to claim 2, wherein: The main beam (2) includes at least two groups of guide wheels (23). The two groups of guide wheels (23) are respectively arranged on both sides of the load-bearing beam (21) and are rotatably connected thereto, and are in rolling connection with the surface of the I-shaped steel channel (32).

4. The rack guide according to claim 2, wherein: The main beam (2) includes a second limit block (24), a lead screw (25) and a support foot (26). The second limit block (24) includes a collar (241) and an arc-shaped plate (242). The support foot (26) is fixedly connected to the end of the lead screw (25). The collar (241) is fixed to the load-bearing beam (21) and is in threaded connection with the lead screw (25). The arc-shaped plate (242) is fixed to the collar (241) and abuts against the bottom surfaces of the two protruding side edges of the I-shaped steel channel (32).

5. A lifting scaffold, which includes the rack guide rail described in claim 1, and is characterized in that: It further includes an attached wall support mechanism (4). The linear track body (3) further includes an I-shaped steel channel (32). A linear groove (33) is formed on the surface of the I-shaped steel channel (32). The linear rack (31) is embedded in the linear groove (33) and fixed to the I-shaped steel channel (32). A square groove (34) is formed in the middle of the I-shaped steel channel (32) along the linear direction. The attached wall support mechanism (4) includes an attached wall seat (41) and a pawl (42). The attached wall seat (41) is in rolling connection with the I-shaped steel channel (32). The pawl (42) is rotatably connected to the attached wall seat (41) and is embedded in the square groove (34).

6. The lifting scaffold according to claim 5, wherein: The wall-attached support mechanism (4) includes two sets of rollers (44) and two arc-shaped sliders (43). The arc-shaped sliders (43) and the rollers (44) are respectively arranged on the upper and lower surfaces of the two protruding side edges at the bottom of the I-shaped steel channel (32). The arc-shaped sliders (43) are fixed to the wall-attached base (41), and the rollers (44) are rotatably connected to the wall-attached base (41).

7. The lifting scaffold according to claim 5, characterized in that: The linear track body (3) further includes a wedge block (35). The side surface of the wedge block (35) is fixed to the I-shaped steel channel (32), and the top is provided with a wedge surface facing the wall-attached base (41). The wall-attached support mechanism (4) includes a T-shaped rod (45). The T-shaped rod (45) includes a hinge rod (451) and a limit rod (452) that are perpendicularly fixed to each other. The hinge rod (451) is rotatably connected to the wall-attached base (41). One side of the limit rod (452) abuts against the wall-attached base (41), and the other side abuts against the bottom surface of the wedge block (35).

8. The lifting scaffold according to claim 5, characterized in that: The main beam (2) further includes a hook (27). An axial hole (411) is provided on the wall-attached base (41). A limit shaft passes through the axial hole (411). One end of the hook (27) is fixed to the main beam (2), and the other end is hooked on the limit shaft.

9. The lifting scaffold according to claim 5, characterized in that: It further includes a bracket (5), a movable beam (6) and a telescopic rod (7). The bracket (5) includes a protective plate (51) and a plurality of load-bearing plates (52). Both ends of the plurality of load-bearing plates (52) are perpendicularly fixed to the protective plate (51) and the movable beam (6) respectively. The top of the movable beam (6) is hingedly connected to the main beam (2), and the telescopic rod (7) is hingedly connected to the protective plate (51).

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