Building material storage rack convenient to adjust

Abstract

The utility model belongs to the technical field of building material storage, and discloses a building material storage frame convenient to adjust, which comprises a middle support and adjusting supports symmetrically arranged on the left side and the right side of the middle support, the middle support comprises a middle base and a middle stand column, and a two-way screw rod and a first guide rod which extend to the left side and the right side are rotatably arranged in the middle base; a first driving mechanism for driving the bidirectional screw rod to rotate is arranged on the middle stand column, the adjusting support comprises an adjusting base, a sliding sleeve and a first guide sleeve which are consistent with the bidirectional screw rod in length direction are arranged in the adjusting base, and a threaded hole is formed in the sliding sleeve and is in screwed connection with the bidirectional screw rod; and the first guide sleeve sleeves the first guide rod in a sliding manner to form limiting guide fit. The two-way lead screw is driven to rotate through the first driving mechanism, the sliding sleeves on the two sides are driven to move in the opposite direction or the reverse direction, the two adjusting supports move in the opposite direction or the reverse direction, and the whole storage frame is stretched and shortened so as to meet the requirement for storing steel of different lengths.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building material storage, especially to a building material storage rack convenient to adjust. BACKGROUND

[0002] The building material logistics warehouse is mainly used for transferring and storing building materials, and the building material storage rack is often used for storing building materials such as steel, which can make the use of space more reasonable, make the warehouse neat and standard, and facilitate the management and taking of steel in the later period. However, due to the various specifications of steel, in order to meet the placement of different specifications of steel, multiple placement racks need to be provided, and often some placement racks are idle, and the idle placement racks need to be placed in a special space, resulting in high fixed cost investment and low facility utilization efficiency.

[0003] In the Chinese utility model patent with publication number CN 213562520 U, a steel placement rack convenient to adjust is disclosed, which comprises a placement rack, and the left and right sides of the placement rack are fixedly connected with clamping blocks. The left and right sides of the placement rack are provided with stand columns, and the opposite sides of the two stand columns are provided with matching grooves. The inner walls of the two matching grooves are slidably connected with the outer surfaces of the clamping blocks. By cooperating the placement rack, the clamping block, the stand column, the matching groove, the connecting block, the placement groove, the control mechanism, the square block, the handle, the fixed column, the adjusting mechanism, the sliding block, the movable hole, the spring, the adjusting rod, the square groove, the adjusting groove, the through hole, the sliding block and the sliding groove, the problem of the existing steel placement rack, which is inconvenient for users to adjust and wastes the energy of users, is solved. The steel placement rack convenient to adjust has the advantages of being convenient for users to adjust and saving the energy of users.

[0004] According to the related technology in the above, the inventors believe that the following defects exist: the above-mentioned scheme can only adjust the height of the placement rack, and cannot adjust the length of the placement rack, which is difficult to apply to the building material warehouse storage with more specifications of steel. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a building material storage rack convenient to adjust.

[0006] The technical purpose is achieved through the following technical scheme: a building material storage rack convenient to adjust, comprising an intermediate support and adjustment supports symmetrically arranged on the left and right sides of the intermediate support, the intermediate support comprises an intermediate base and an intermediate column arranged on the rear side of the intermediate base, a bidirectional screw rod and a first guide rod extending to the adjustment supports on the left and right sides are rotatably arranged in the intermediate base, a first bevel gear is arranged on the middle part of the bidirectional screw rod, a driving shaft is rotatably arranged in the intermediate base, the length direction of the driving shaft is perpendicular to the bidirectional screw rod, a second bevel gear is arranged on the end of the driving shaft close to the bidirectional screw rod, the second bevel gear is engaged with the first bevel gear, the end of the driving shaft away from the bidirectional screw rod extends to the outside of the intermediate column, a first driving mechanism driving the driving shaft to rotate is arranged on the intermediate column, the adjustment support comprises an adjustment base, a sliding sleeve and a first guide sleeve consistent with the length direction of the bidirectional screw rod are arranged in the adjustment base, a threaded hole is arranged in the sliding sleeve and is screw-connected with the bidirectional screw rod, the first guide sleeve is slidably arranged on the first guide rod to form a limiting and guiding cooperation.

[0007] Further, the second guide rods are arranged on the left and right sides of the intermediate column and extend to the adjustment supports, the first adjustment column and the second adjustment column are sequentially and spacedly arranged from the inside to the outside of the rear side of the adjustment base, the second guide sleeve is arranged on the second adjustment column and extends to the intermediate column, the second guide sleeve penetrates through the first adjustment column and is slidably arranged on the second guide rod to form a limiting and guiding cooperation.

[0008] Further, the intermediate column, the first adjustment column and the second adjustment column are all hollow square tubes, a rotating screw rod is vertically rotatably arranged in the intermediate column, a nut sleeve is screw-connected on the rotating screw rod, a first vertical slot is formed in the left and right side walls of the intermediate column, and the two second guide rods are fixed on the nut sleeve at the end close to the intermediate column; a third guide rod is vertically arranged in the second adjustment column, a guide sleeve is slidably arranged on the third guide rod, a second vertical slot is formed in the side wall of the second adjustment column close to the first adjustment column, third vertical slots are formed in the left and right side walls of the first adjustment column, the second guide sleeve is located in the second vertical slot and the third vertical slot and is fixedly connected with the guide sleeve at the end away from the intermediate column, and a second driving mechanism driving the rotating screw rod to rotate is further arranged on the intermediate column.

[0009] Further, the guide sliding block is arranged on the pipe in the first adjusting column, vertical fourth, fifth and sixth slotted holes are respectively arranged on the front side walls of the middle column, the first adjusting column and the second adjusting column, and adjusting rods are respectively arranged on the front sides of the nut sliding sleeve, the guide sliding block and the guide sliding sleeve.

[0010] Further, a plurality of positioning holes are vertically and longitudinally arranged on the front and back side walls of the first adjusting column and the second adjusting column, and fixing bolts are inserted into the positioning holes near the bottom surfaces of the guide sliding block and the guide sliding sleeve when the nut sliding sleeve, the guide sliding block and the guide sliding sleeve are slid to the adjusting height.

[0011] Further, the first driving mechanism comprises a first rotating shaft which is rotatably arranged at the middle part of the rear side wall of the middle column, a first driving wheel is arranged on the first rotating shaft, a first driven wheel is arranged on the end of the driving shaft which extends out of the middle column, the first driving wheel and the first driven wheel are connected through a first synchronous belt, a first rotating handle is arranged on the side of the first rotating disc which is away from the first rotating shaft.

[0012] Further, the second driving mechanism comprises a second rotating shaft which is rotatably arranged at the middle part of the rear side wall of the middle column, a second driving wheel is arranged on the second rotating shaft, a worm wheel is arranged on the top of the rotating screw rod which extends out of the middle column, two fixing plates are arranged on the top of the rotating screw rod, a worm is rotatably arranged between the two fixing plates, the worm is matched with the worm wheel, a second driven wheel is arranged on the end of the worm which extends out of the fixing plate and is away from the middle column, the second driving wheel and the second driven wheel are connected through a second synchronous belt, a second rotating handle is arranged on the side of the second rotating disc which is away from the second rotating shaft.

[0013] Further, universal wheels are arranged on the bottoms of the middle base and the adjusting base.

[0014] In conclusion, the utility model has the following beneficial effects:

[0015] 1、in this application, the intermediate support and two adjusting supports are arranged, through the cooperation of the bidirectional screw rod, the first guide rod and the sliding sleeve, the first guide sleeve, the driving shaft, the first bevel gear and the second bevel gear, the driving shaft, the second bevel gear and the first bevel gear drive the bidirectional screw rod to rotate under the driving action of the first driving mechanism, thereby driving the two sliding sleeves on the two sides to move towards or reversely, and then the two adjusting supports move towards or reversely, so that the first driving mechanism can be driven to realize the lengthening and shortening of the whole storage rack to adapt to the needs of storing steel materials of different lengths.

[0016] 2、in this application, the intermediate column, the first adjusting column, the second adjusting column, the second guide rod and the second guide sleeve are arranged, the second guide rod and the second guide sleeve are used for limiting and guiding the adjustment of the adjusting support, the rotating screw rod, the nut sliding sleeve, the third guide rod, the guide sliding sleeve, the guide sliding block, the adjusting rod and the strip-shaped hole are arranged, so that the adjusting rod can be driven by the nut sliding sleeve, the guide sliding sleeve and the guide sliding block to move in the height direction of the storage rack, thereby adjusting the height of the adjusting rod, so that multi-layer stacking and height adjustment can be realized according to the needs. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic diagram of the storage rack in the folded state of the embodiment of the utility model;

[0018] Figure 2 is the overall structure schematic diagram of the storage rack in the unfolded state of the embodiment of the utility model;

[0019] Figure 3 is the structure schematic diagram of the intermediate support in the embodiment of the utility model;

[0020] Figure 4 is the cross-sectional structure schematic diagram of the intermediate support in the embodiment of the utility model;

[0021] Figure 5 is the structure schematic diagram for highlighting the first driving mechanism and the second driving mechanism in the embodiment of the utility model;

[0022] Figure 6 is the structure schematic diagram of the adjusting support in the embodiment of the utility model;

[0023] Figure 7 is the side cut structure schematic diagram of the adjusting support in the embodiment of the utility model.

[0024] In the diagram: 1. Intermediate support; 2. Adjusting support; 10. Intermediate base; 11. Bidirectional lead screw; 12. First guide rod; 13. First bevel gear; 14. Drive shaft; 15. Second bevel gear; 20. Intermediate column; 21. Second guide rod; 22. Rotating lead screw; 23. Nut sleeve; 24. First slotted hole; 25. Fourth slotted hole; 30. First drive mechanism; 31. First rotating shaft; 32. First driving wheel; 33. First driven wheel; 34. First synchronous belt; 35. First turntable; 36. First rotating handle; 40. Adjusting base; 41. Sliding sleeve; 42. First guide rod. 50. Sleeve; 51. First adjusting column; 52. Third strip hole; 53. Guide slider; 54. Fifth strip hole; 65. Second adjusting column; 66. Second guide sleeve; 67. Third guide rod; 68. Guide sleeve; 69. Second strip hole; 70. Sixth strip hole; 71. Second drive mechanism; 72. Second rotating shaft; 73. Worm gear; 74. Fixed plate; 75. Worm; 76. Second driven wheel; 77. Second synchronous belt; 78. Second turntable; 79. Second rotating handle; 81. Adjusting rod; 82. Positioning hole; 83. Fixing bolt; 84. Universal wheel. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] like Figures 1-7 As shown in the illustration, this application discloses an adjustable building material storage rack, including a central support 1 and an adjustable support 2. There are two adjustable supports 2, symmetrically arranged on the left and right sides of the central support 1. The central support 1 includes a central base 10 and a central column 20 located behind the central base 10. The adjustable support 2 includes an adjustable base 40, a first adjustable column 50, and two adjustable columns. The first adjustable column 50 and the two adjustable columns are located behind the adjustable base 40 and are spaced apart from the inside to the outside, i.e., the first adjustable column 50 is located on the side adjacent to the central support 1. Casters 84 are provided at the bottom of both the central base 10 and the adjustable base 40 to facilitate the movement of the storage rack and the adjustment support 2 during adjustment. Specifically, to maintain balance, four casters 84 are provided at the bottom of the central base 10, and at least four casters 84 are provided at the four corners of the bottom of the adjustable base 40. Alternatively, two to four additional casters 84 can be added to the bottom of the adjustable base 40 as needed.

[0027] A bidirectional lead screw 11 and a first guide rod 12, extending towards the left and right adjustment brackets 2, are rotatably disposed within the central base 10. The bidirectional lead screw 11 and the first guide rod 12 are arranged parallel and spaced apart. A sliding sleeve 41 and a first guide sleeve 42, aligned with the length direction of the bidirectional lead screw 11, are disposed within the adjustment base 40. The sliding sleeve 41 has a threaded hole that is helically connected to the bidirectional lead screw 11, and the first guide sleeve 42 is slidably mounted on the first guide rod 12 to form a limiting and guiding fit. Thus, when the bidirectional lead screw 11 rotates, it drives the sliding sleeve 41 to move on the bidirectional lead screw 11. Since the helical directions of the lead screws on both sides of the bidirectional lead screw 11 are opposite, the rotation of the bidirectional lead screw 11 will drive the sliding sleeves 41 on both sides to move in opposite directions, thereby driving the adjustment bases 40 on both sides to move in opposite directions, causing the entire storage rack to extend or shorten, thus achieving length adjustment. This allows the length of the storage racks to be pre-adjusted according to the required length of the steel to be stored, easily accommodating steel of various lengths. Thus, only one type of storage rack needs to be configured in the warehouse to meet the storage requirements of steel of various lengths.

[0028] In a specific configuration, a drive shaft 14 is rotatably mounted within the intermediate base 10. The length direction of the drive shaft 14 is perpendicular to the bidirectional lead screw 11. A second bevel gear 15 is mounted at one end of the drive shaft 14 near the bidirectional lead screw 11, and a first bevel gear 13 is mounted in the middle of the bidirectional lead screw 11. The second bevel gear 15 meshes with the first bevel gear 13. The end of the drive shaft 14 away from the bidirectional lead screw 11 passes through the intermediate base 10 and the intermediate column 20 and extends beyond the intermediate column 20. A first drive mechanism 30 for driving the drive shaft 14 is mounted on the intermediate column 20. The first drive mechanism 30 includes a first rotating shaft 31 rotatably mounted in the middle of the rear side wall of the intermediate column 20. A first driving wheel 32 is mounted on the first rotating shaft 31, and a first driven wheel 33 is mounted at the end of the drive shaft 14 extending beyond the intermediate column 20. The first driving wheel 32 and the first driven wheel 33 are connected by a first synchronous belt 34. A first turntable 35 is provided at the end of the first rotating shaft 31 away from the central column 20, and a first rotating handle 36 is provided on the side of the first turntable 35 away from the first rotating shaft 31. The drive shaft 14 is driven to rotate by the cooperation of the first rotating shaft 31, the first driving wheel 32, the first driven wheel 33, and the first synchronous belt 34. The second bevel gear 15 and the first bevel gear 13 then drive the double-acting lead screw 11 to rotate. In this way, the adjustment brackets 2 on both sides can be driven manually by the first rotating handle 36 to drive the first turntable 35, thereby adjusting the length of the storage rack. The first rotating shaft 31 is located in the middle of the rear side wall of the central column 20, so that the operator can operate while standing without having to bend over or squat on the ground to drive the drive shaft 14, making the operation more convenient.

[0029] Further, the second guide rod 21 is arranged on the left and right sides of the middle column 20, and the second guide sleeve 61 is arranged on the second adjusting column 60 and extends towards the middle column 20, penetrates the first adjusting column 50 and is sleeved on the second guide rod 21 to form a limiting guide cooperation. The limiting guide cooperation between the second guide sleeve 61 and the second guide rod 21 further guides the movement of the adjusting support 2 and maintains the stability of the movement of the adjusting support 2.

[0030] Specifically, the middle column 20, the first adjusting column 50 and the second adjusting column 60 are all hollow square tubes, the first strip hole 24 is vertically arranged on the left and right side walls of the middle column 20, the second strip hole 64 is vertically arranged on the side wall of the second adjusting column 60 close to the first adjusting column 50, the third strip hole 51 is vertically arranged on the left and right side walls of the first adjusting column 50, and the width and height of the first strip hole 24, the second strip hole 64 and the third strip hole 51 are equal. The fourth strip hole 25, the fifth strip hole 53 and the sixth strip hole 65 are vertically arranged on the front side walls of the middle column 20, the first adjusting column 50 and the second adjusting column 60, respectively, and the width and height of the fourth strip hole 25, the fifth strip hole 53 and the sixth strip hole 65 are equal and consistent with the height of the first strip hole 24.

[0031] The rotating screw 22 is vertically arranged in the middle column 20, and the second driving mechanism 70 is arranged on the middle column 20 to drive the rotating screw 22 to rotate. The nut sleeve 23 is screw-connected to the rotating screw 22, is located in the cavity of the middle column 20 and is close to the inner wall of the middle column 20 around, so that the nut sleeve 23 can only move up and down with the rotation of the rotating screw 22 and cannot rotate. The two second guide rods 21 are arranged on the left and right sides of the nut sleeve 23 and are fixed to the nut sleeve 23 at one end close to the middle column 20, and the rod body of the second guide rod 21 is located in the first strip hole 24, so that when the nut sleeve 23 moves up and down with the rotation of the rotating screw 22, the second guide rod 21 moves up and down in the first strip hole 24.

[0032] A third guide rod 62 is vertically arranged in the second adjusting column 60, and a guide sleeve 63 is slidably sleeved on the third guide rod 62. The guide sleeve 63 is located in the cavity of the second adjusting column 60 and closely attached to the inner wall of the second adjusting column 60 around, so that the guide sleeve 63 can only move up and down along the third guide rod 62 and cannot rotate. The second guide sleeve 61 is fixedly connected to the guide sleeve 63 away from the one end of the intermediate column 20, and the pipe body of the second guide sleeve 61 is located in the second slot 64 and the third slot 51 and passes through the third slot 51 on the left and right sides of the first adjusting column 50. Since the second guide sleeve 61 is sleeved on the second guide rod 21, when the second guide rod 21 moves up and down in the first slot 24, the second guide sleeve 61 moves up and down in the second slot 64 and the third slot 51, and the guide sleeve 63 moves up and down on the third guide rod 62 synchronously, thereby playing a sliding guide role.

[0033] In order to improve the stability of the up-and-down movement of the second guide sleeve 61, a guide block 52 is arranged on the pipe body of the second guide sleeve 61 located in the first adjusting column 50. The guide block 52 is located in the cavity of the first adjusting column 50 and closely attached to the inner wall of the first adjusting column 50 around, so that the guide sleeve 63 can only move up and down in the first adjusting column 50. Under the action of the second guide rod 21 and the second guide sleeve 61, the nut sleeve 23, the guide block 52, and the guide sleeve 63 are located on the same straight line. Adjustment rods 81 are outwardly protruding arranged on the front side of the nut sleeve 23, the guide block 52, and the guide sleeve 63, and are vertically slidably arranged in the fourth slot 25, the fifth slot 53, and the sixth slot 65, respectively. The top surfaces of the adjustment rods 81 on the nut sleeve 23, the guide block 52, and the guide sleeve 63 are coplanar and located above the intermediate base 10 and the adjusting base 40, forming a second layer of support surface. When the screw rod 22 is rotated to drive the nut sleeve 23 to move up and down, the guide block 52 and the guide sleeve 63 move synchronously, thereby driving the adjustment rods 81 to move up and down, so that the second layer of support surface moves up and down, thereby realizing the height adjustment of the multi-layer support of the storage rack.

[0034] In order to ensure the stability of the second layer of support surface after adjustment and to place certain steel materials, a plurality of positioning holes 82 are vertically and penetratingly arranged on the front and rear side walls of the first adjusting column 50 and the second adjusting column 60. When the nut sleeve 23, the guide block 52, and the guide sleeve 63 slide to the adjusted height, the fixing bolts 83 are inserted into the positioning holes 82 near the bottom surfaces of the guide block 52 and the guide sleeve 63, and the screw rods of the fixing bolts 83 support the bottom of the guide block 52 and the guide sleeve 63, thereby ensuring that the adjustment rods 81 at both ends will not move downward under the pressure of the heavy object.

[0035] The second driving mechanism 70 comprises a second rotating shaft 71 rotatably arranged in the middle part of the rear side wall of the middle stand 20, the second rotating shaft 71 is provided with a second driving wheel 72, and the second rotating shaft 71 is provided with a second rotating disc 78 at the end away from the middle stand 20, and the second rotating disc 78 is provided with a second rotating handle 79 away from the second rotating shaft 71. The rotating screw rod 22 is arranged outside the middle stand 20 at the top and provided with a worm wheel 73, two fixed plates 74 are arranged at the top of the rotating screw rod 22, the worm 75 is rotatably arranged between the two fixed plates 74, the worm 75 cooperates with the worm wheel, the worm 75 is arranged outside the fixed plate 74 at the end away from the middle stand 20 and provided with a second driven wheel 76, and the second driving wheel 72 and the second driven wheel 76 are connected through the second synchronous belt 77. The second rotating handle 79 drives the second rotating disc 78 to rotate, thereby driving the second rotating shaft 71 and the second driving wheel 72 to rotate, driving the second driven wheel 76 to rotate through the second synchronous belt 77, and further driving the worm 75 and the worm wheel 73 to rotate, thereby driving the rotating screw rod 22 to rotate. The second rotating shaft 71 is arranged in the middle part of the rear side wall of the middle stand 20, so that the operator can stand and operate, without reaching the top of the middle stand 20, so that the operation is more convenient.

[0036] Further, the top of the middle stand 20 and the rear side are also provided with a protective cover, the top protective cover is used for protecting the worm 75 and the worm wheel 73, the rear side protective cover is used for protecting the first driving mechanism 30 and the second driving mechanism 70, and the first rotating shaft 31 and the second rotating shaft 71 pass through the rear side protective cover, and the first rotating disc 35 and the second rotating disc 78 are arranged outside the rear side protective cover, so that the transmission parts of the first driving mechanism 30 and the second driving mechanism 70 are protected, only the first rotating disc 35, the second rotating disc 78, the first rotating handle 36 and the second rotating handle 79 are left outside for convenient operation. Bearings can also be arranged at positions corresponding to the first rotating shaft 31 and the second rotating shaft 71 of the rear side protective cover, and the first rotating shaft 31 and the second rotating shaft 71 are rotatably supported by the bearings, so that the first rotating shaft 31 and the second rotating shaft 71 are more stable.

[0037] The use principle of the building material storage rack convenient to adjust in the embodiment is as follows: first, the height of the adjusting rod 81 is adjusted according to the length of the steel to be stored, so as to meet the stacking requirement of the length of the steel. An operator operates the first rotating handle 36 to drive the first rotating disc 35 to rotate, and the first rotating shaft 31, the first driving wheel 32, the first synchronous belt 34, the first driven wheel 33, the driving shaft 14, the second bevel gear 15 and the first bevel gear 13 drive the bidirectional screw rod 11 to rotate. Under the limiting and guiding cooperation of the first guide sleeve 42 and the first guide rod 12, the sliding sleeves 41 on both sides move on the bidirectional screw rod 11, so that the two adjusting supports 2 on both sides move towards or away from each other, and the length is adjusted.

[0038] The position of the adjusting support 2 is adjusted according to the length of the steel to be stored, so as to meet the stacking requirement of the length of the steel. An operator operates the first rotating handle 36 to drive the first rotating disc 35 to rotate, and the first rotating shaft 31, the first driving wheel 32, the first synchronous belt 34, the first driven wheel 33, the driving shaft 14, the second bevel gear 15 and the first bevel gear 13 drive the bidirectional screw rod 11 to rotate. Under the limiting and guiding cooperation of the first guide sleeve 42 and the first guide rod 12, the sliding sleeves 41 on both sides move on the bidirectional screw rod 11, so that the two adjusting supports 2 on both sides move towards or away from each other, and the length is adjusted.

[0039] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A readily adjustable building material storage rack characterized by: The adjusting support (2) is symmetrically arranged on the left and right sides of the intermediate support (1), the intermediate support (1) comprises an intermediate base (10) and an intermediate column (20) arranged at the rear side of the intermediate base (10), a bidirectional screw rod (11) and a first guide rod (12) extending to the direction of the adjusting support (2) on the left and right sides are rotatably arranged in the intermediate base (10), a first bevel gear (13) is arranged at the middle portion of the bidirectional screw rod (11), a driving shaft (14) is rotatably arranged in the intermediate base (10), the length direction of the driving shaft (14) is perpendicular to the bidirectional screw rod (11), a second bevel gear (15) is arranged at one end of the driving shaft (14) close to the bidirectional screw rod (11), the second bevel gear (15) is engaged with the first bevel gear (13), the driving shaft (14) extends to the outside of the intermediate column (20) at one end away from the bidirectional screw rod (11), a first driving mechanism (30) for driving the rotation of the driving shaft (14) is arranged on the intermediate column (20), the adjusting support (2) comprises an adjusting base (40), a sliding sleeve (41) consistent with the length direction of the bidirectional screw rod (11) and a first guide sleeve (42) are arranged in the adjusting base (40), a threaded hole is arranged in the sliding sleeve (41) and is screw-connected with the bidirectional screw rod (11), the first guide sleeve (42) is slidingly arranged on the first guide rod (12) to form a limiting and guiding cooperation.

2. The easily adjustable building material storage rack of claim 1, wherein: Second guide rods (21) are arranged on the left and right sides of the intermediate column (20) and extend to the direction of the adjusting support (2), a first adjusting column (50) and a second adjusting column (60) are sequentially and spacedly arranged from the inside to the outside at the rear side of the adjusting base (40), a second guide sleeve (61) extending to the direction of the intermediate column (20) is arranged on the second adjusting column (60) and extends to the direction of the intermediate column (20), the second guide sleeve (61) penetrates through the first adjusting column (50) and is slidingly arranged on the second guide rod (21) to form a limiting and guiding cooperation.

3. The easily adjustable building material storage rack of claim 2, wherein: The intermediate column (20), the first adjusting column (50) and the second adjusting column (60) are all hollow square tubular, the intermediate column (20) is vertically rotatably provided with a rotating screw rod (22), the rotating screw rod (22) is spirally connected with a nut sleeve (23), the left and right two side walls of the intermediate column (20) are provided with a vertical first strip hole (24), the two second guide rods (21) are located in the first strip hole (24) and are fixed on the nut sleeve (23) near one end of the intermediate column (20); the second adjusting column (60) is vertically provided with a third guide rod (62), the third guide rod (62) is slidably sleeved with a guide sleeve (63), the second adjusting column (60) is provided with a vertical second strip hole (64) on the side wall near the first adjusting column (50), the left and right two side walls of the first adjusting column (50) are provided with a vertical third strip hole (51), the second guide sleeve (61) is located in the second strip hole (64) and the third strip hole (51) and is fixedly connected with the guide sleeve (63) away from one end of the intermediate column (20), and the intermediate column (20) is further provided with a second driving mechanism (70) for driving the rotating screw rod (22) to rotate.

4. The easily adjustable building material storage rack of claim 3, wherein: The second guide sleeve (61) is provided with a guide block (52) on the pipe in the first adjusting column (50), the front side walls of the intermediate column (20), the first adjusting column (50) and the second adjusting column (60) are respectively provided with a vertical fourth strip hole (25), a vertical fifth strip hole (53) and a vertical sixth strip hole (65), and the nut sleeve (23), the guide block (52) and the guide sleeve (63) are all outwardly protruding provided with an adjusting rod (81) on the front side, and the adjusting rod (81) is vertically slidably arranged in the fourth strip hole (25), the fifth strip hole (53) and the sixth strip hole (65) respectively.

5. The adjustable building material storage rack of claim 4, wherein: A plurality of positioning holes (82) are vertically and through provided on the front and back side walls of the first adjusting column (50) and the second adjusting column (60), and when the nut sleeve (23), the guide block (52) and the guide sleeve (63) are slid to the adjusting height, the positioning holes (82) near the bottom surfaces of the guide block (52) and the guide sleeve (63) are inserted with fixing bolts (83).

6. The adjustable building material storage rack of claim 1, wherein: The first driving mechanism (30) comprises a first rotating shaft (31) rotatably arranged in the middle part of the rear side wall of the intermediate column (20), the first rotating shaft (31) is provided with a first driving wheel (32), one end of the driving shaft (14) extending out of the intermediate column (20) is provided with a first driven wheel (33), the first driving wheel (32) and the first driven wheel (33) are connected through a first synchronous belt (34), and the first rotating shaft (31) is provided with a first rotating disc (35) away from the intermediate column (20), and the first rotating disc (35) is provided with a first rotating handle (36) away from the first rotating shaft (31).

7. The adjustable building material storage rack of claim 3, wherein: The second driving mechanism (70) comprises a second rotating shaft (71) arranged in the middle of the rear side wall of the middle stand (20), a second driving wheel (72) is arranged on the second rotating shaft (71), the rotating lead screw (22) extends out of the middle stand (20) at the top and is provided with a worm gear (73), two fixed plates (74) are arranged at the top of the rotating lead screw (22) at intervals, a worm (75) is rotatably arranged between the two fixed plates (74), the worm (75) cooperates with the worm gear, one end of the worm (75) away from the middle stand (20) extends out of the fixed plate (74) and is provided with a second driven wheel (76), the second driving wheel (72) and the second driven wheel (76) are connected through a second synchronous belt (77), and the second rotating shaft (71) is provided with a second rotating disc (78) at one end away from the middle stand (20), and the second rotating disc (78) is provided with a second rotating handle (79) on the side away from the second rotating shaft (71).

8. The adjustable building material storage rack of claim 1, wherein: The bottom of the middle base (10) and the adjusting base (40) is provided with a universal wheel (84).

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