Large module racking placing pier

Abstract

The invention relates to the technical field of shelving piers, and discloses a large module racking shelving pier which comprises a shelving pier body, wing plates are fixedly installed on the two sides of the shelving pier body, and a moving assembly is arranged at the top end of the inner wall of the shelving pier body; the moving assembly comprises a supporting block, a rotating shaft and a second screw rod, a first shrinkage groove is formed in the top end of the inner wall of the block body, the supporting block is clamped in the first shrinkage groove, a threaded sleeve is fixedly installed at the top end of the supporting block, a rotating groove is formed in the block body, and a through hole is formed in the bottom end of the inner wall of the rotating groove and the top end of the inner wall of the first shrinkage groove in a communicating mode. According to the large module racking placing pier, the balls can push the placing pier body to be separated from the top end of the storage rack, at the moment, the placing pier body can be directly pushed to move on the storage rack, friction between the placing pier body and the storage rack is greatly reduced, personnel can adjust the position of the placing pier body on the storage rack more easily, manpower is saved, and the adjusting efficiency is improved; the abrasion between the shelf and the block main body is greatly reduced, and the service life of the block main body is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of supporting piers, and particularly to a supporting pier for large modules on a rack. Background Technique

[0002] After the fabrication of large module structures such as steel structure fabrication and shipbuilding is completed, they need to be placed on brackets for transportation in order to carry out the next operations such as painting.

[0003] To ensure the integrity of painting, large modules are not directly placed on the shelf, but are padded with supporting piers to ensure that a larger area can be painted. To ensure the safety of large modules on the rack, traditional supporting piers are welded to the shelf. Due to the different structures of the modules and the different support force points, the positions of the supporting piers must be adjusted every time the module is placed on the rack, resulting in a large waste of man-hours. For this reason, we propose a supporting pier for large modules on a rack. Summary of the Invention

[0004] The purpose of the present invention is to provide a supporting pier for large modules on a rack to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A supporting pier for large modules on a rack, including a pier main body, wing plates are fixedly installed on both sides of the pier main body, and a moving component is arranged at the top end of the inner wall of the pier main body; The moving component includes a support block, a rotating shaft and a second screw. A first contraction groove is opened at the top end of the inner wall of the pier main body. The support block is clamped in the first contraction groove. A threaded sleeve is fixedly installed at the top end of the support block. A rotating groove is opened inside the pier main body. A through hole is opened at the bottom end of the inner wall of the rotating groove and the top end of the inner wall of the first contraction groove in communication. The threaded sleeve movably penetrates through the through hole. A connecting plate is fixedly installed on the inner wall of the rotating groove. The connecting plate is rotatably sleeved on the outer wall of the second screw through a bearing. The threaded sleeve is threadedly sleeved on the outer wall of the second screw. A second bevel gear is fixedly installed at the top end of the second screw. The rotating shaft penetrates through the back of the pier, and the rotating shaft is rotatably connected to the pier main body through a bearing. A first bevel gear is fixedly installed at one end of the rotating shaft. The first bevel gear meshes with the second bevel gear. A second rotating plate is fixedly installed at the other end of the rotating shaft. A bead groove is opened at the bottom end of the support block. A ball is rollingly embedded in the inner wall of the bead groove.

[0006] Furthermore, the number of the balls and the bead grooves is three, and the balls and the bead grooves are adapted to each other. By setting the balls, the friction between the pier main body and the shelf can be greatly reduced, and the flexibility of the pier main body during movement adjustment can be improved.

[0007] Furthermore, a limiting rod is fixedly installed at the top end of the support block. A rod groove is opened at the top end of the inner wall of the first contraction groove. The limiting rod is inserted into the rod groove. By setting the limiting rod, the support block can be limited, and the stability of the support block during use can be improved.

[0008] Furthermore, a top plate is provided at the top end of the pier main body. Limit columns are fixedly installed near the four corners at the bottom end of the top plate. Installation grooves are formed near the four corners at the top end of the pier main body. Column grooves are formed at the bottom end of the inner wall of the installation groove. The limit columns are inserted into the column grooves. Springs are fixedly connected between the bottom end of the top plate and the bottom end of the inner wall of the installation groove. A lifting assembly is arranged between the top plate and the pier main body; The lifting assembly includes a first inclined top block, a second inclined top block and a bidirectional screw. A second contraction groove is formed at the top end of the pier main body. Both the first inclined top block and the second inclined top block are slidably connected to the inner wall of the second contraction groove. The bidirectional screw penetrates through the front surface of the pier main body and is rotatably connected to the pier main body through a bearing. The first inclined top block and the second inclined top block are respectively sleeved on the outer wall of the bidirectional screw in a threaded manner. An inverted trapezoidal block is fixedly installed at the bottom end of the top plate. The inclined surfaces of the first inclined top block and the second inclined top block are respectively slidably connected to the two side inclined surfaces of the inverted trapezoidal block. A third rotating plate is fixedly installed at one end of the bidirectional screw.

[0009] Furthermore, a sliding rod is fixedly installed on the inner wall of the second contraction groove. Rod holes are formed in both the first inclined top block and the second inclined top block. The sliding rod movably penetrates through the rod holes. By providing the sliding rod, the first inclined top block and the second inclined top block can be limited, ensuring the stability and strength of the first inclined top block and the second inclined top block during use.

[0010] Furthermore, a fastening screw is threadedly connected to the threaded hole formed in the third rotating plate. An annular groove is formed on the front surface of the pier main body. An anti-slip pad is fixedly installed on the inner wall of the annular groove. One end of the fastening screw is in close contact with the anti-slip pad. A knob is fixedly installed at the other end of the fastening screw. After the height of the top plate is adjusted, the knob can be rotated to drive the fastening screw to rotate, so that the fastening screw extends into the annular groove and presses against the anti-slip pad, thereby enabling the fastening screw to limit and fix the third rotating plate, and further ensuring the stability of the top plate during use.

[0011] Furthermore, a first screw is threadedly connected to the threaded holes formed on both sides of the pier main body. One end of the first screw is rotatably connected to a clamping plate through a bearing seat. A first rotating plate is fixedly installed at the other end of the first screw. The clamping plate is slidably connected to the inner wall of the pier main body. After the position of the pier main body on the shelf is adjusted, the first rotating plate can be rotated. The first rotating plate drives the first screw to rotate, and the first screw drives the clamping plate to move towards the shelf direction. Finally, the clamping plate clamps the shelf, thereby fixing the pier main body on the shelf and ensuring the stability of the pier main body during support use.

[0012] Furthermore, a limit sliding block is fixedly installed at the top end of the clamping plate. A limit sliding groove is formed at the top end of the inner wall of the pier main body. The limit sliding block is slidably connected to the limit sliding groove. By providing the limit sliding block and the limit sliding groove, the clamping plate can be limited, ensuring the stability of the clamping plate during use.

[0013] Further, a plurality of tooth grooves are formed in the inner side of the clamping plate. By providing the tooth grooves, the friction between the clamping plate and the shelf can be increased, thereby improving the stability of the fixing of the pier body on the shelf.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: For this large-module upper-frame pier, the ball can push the pier body away from the top end of the shelf. At this time, the pier body can be directly pushed to move on the shelf, greatly reducing the friction between the pier body and the shelf, making it easier for personnel to adjust the position of the pier body on the shelf, saving manpower, improving the adjustment efficiency, and greatly reducing the wear between the shelf and the pier body, thereby extending its service life. For this large-module upper-frame pier, it is convenient for personnel to adjust the height of the top plate on the pier body, so that the pier body can support different heights on the module without replacing the entire pier, greatly reducing the usage limitations of the pier and having strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the back structure of the present invention; Figure 3 is a schematic diagram of the side sectional structure of the present invention; Figure 4 is a schematic diagram of the split structure of the top plate and the pier body of the present invention; Figure 5 is a schematic diagram of the partial front sectional structure of the clamping plate of the present invention; Figure 6 is a schematic diagram of the inverted trapezoidal block structure of the present invention; Figure 7 is of the present invention Figure 3 Schematic diagram of the enlarged structure of part A; Figure 8 is of the present invention Figure 3 Schematic diagram of the enlarged structure of part B; Figure 9 is of the present invention Figure 4 Schematic diagram of the enlarged structure of part C; Figure 10 is of the present invention Figure 5 Schematic diagram of the enlarged structure of part D.

[0016] In the figure: 1. Pier main body; 2. Wing plate; 3. Moving component; 4. Lifting component; 5. Top plate; 6. Limit post; 7. Spring; 8. Installation groove; 9. Column groove; 10. Clamping plate; 11. First screw; 12. First rotating plate; 13. Tooth groove; 14. Limit slider; 15. Limit sliding groove; 301. Second rotating plate; 302. Rotating shaft; 303. Rotating groove; 304. First bevel gear; 305. Second bevel gear; 306. Second screw; 307. Perforation; 308. Threaded sleeve; 309. First contraction groove; 310. Ball; 311. Ball groove; 312. Rod groove; 313. Limit rod; 314. Support block; 401. Second contraction groove; 402. First inclined top block; 403. Inverted trapezoidal block; 404. Second inclined top block; 405. Bi-directional screw; 406. Third rotating plate; 407. Ring groove; 408. Fastening screw; 409. Knob; 410. Anti-slip pad; 411. Slide bar; 412. Rod hole. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in 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.

[0018] Embodiment 1 Please refer to Figures 1 - 10 , the present invention provides a technical solution: a large module shelf pier, including a pier main body 1, wing plates 2 are fixedly installed on both sides of the pier main body 1, and a moving component 3 is arranged at the top end of the inner wall of the pier main body 1; The moving component 3 includes a support block 314, a rotating shaft 302 and a second screw 306. A first contraction groove 309 is opened at the top end of the inner wall of the pier main body 1. The support block 314 is clamped in the first contraction groove 309. A threaded sleeve 308 is fixedly installed at the top end of the support block 314. A rotating groove 303 is opened inside the pier main body 1. A perforation 307 is opened at the bottom end of the inner wall of the rotating groove 303 and communicated with the top end of the inner wall of the first contraction groove 309. The threaded sleeve 308 movably penetrates through the perforation 307. A connecting plate is fixedly installed on the inner wall of the rotating groove 303. The connecting plate is rotatably sleeved on the outer wall of the second screw 306 through a bearing. The threaded sleeve 308 is threadedly sleeved on the outer wall of the second screw 306. A second bevel gear 305 is fixedly installed at the top end of the second screw 306. The rotating shaft 302 penetrates through the back of the pier, and the rotating shaft 302 is rotatably connected to the pier main body 1 through a bearing. A first bevel gear 304 is fixedly installed at one end of the rotating shaft 302. The first bevel gear 304 meshes with the second bevel gear 305. A second rotating plate 301 is fixedly installed at the other end of the rotating shaft 302. A ball groove 311 is opened at the bottom end of the support block 314, and a ball 310 is rollingly embedded in the inner wall of the ball groove 311.

[0019] The number of the rolling balls 310 and the ball grooves 311 is three, and the rolling balls 310 and the ball grooves 311 are adapted to each other. By arranging the rolling balls 310, the friction between the pier main body 1 and the shelf can be greatly reduced, and the flexibility of the pier main body 1 during moving adjustment can be improved.

[0020] A limiting rod 313 is fixedly installed at the top end of the support block 314. A rod groove 312 is formed at the top end of the inner wall of the first contraction groove 309. The limiting rod 313 is inserted into the rod groove 312. By arranging the limiting rod 313, the support block 314 can be limited, and the stability of the support block 314 during use can be improved; the limiting rod adopts a precision fit tolerance of H7 / g6, the surface is treated with hard chromium plating, the diameter tolerance is controlled within ±0.01 mm, a self-lubricating copper-based bushing is arranged on the inner wall of the rod groove, the wall thickness of the bushing is 2 mm, and a spiral oil groove is opened. The double rods are symmetrically arranged to form a guiding pair, and the rotational freedom degree of the support block can be completely eliminated. A buffer gasket is arranged at the bottom of the rod groove and is made of polyurethane material with a Shore hardness of 80A, which can absorb the impact load of a 5-mm stroke. The guiding system is optimized by finite element analysis. When a lateral load of 500 kg acts, the deformation amount is less than 0.1 mm. A laser hardening treatment layer is arranged on the mating surface, and the wear-resistant life reaches 100,000 reciprocating motions. A visible scale is provided for observing the displacement amount.

[0021] Working principle: When it is necessary to adjust the position of the pier main body 1 on the shelf, the second rotating plate 301 can be rotated. The second rotating plate 301 drives the rotating shaft 302 to rotate. The rotating shaft 302 drives the first bevel gear 304 to rotate. The first bevel gear 304 drives the second bevel gear 305 to rotate. The second bevel gear 305 drives the second screw rod 306 to rotate. The second screw rod 306 drives the threaded sleeve 308 to move downward, so that the threaded sleeve 308 drives the support block 314 to move downward, so that the rolling balls 310 of the support block 314 move downward, so that the rolling balls 310 contact the top end of the shelf, so that the rolling balls 310 push the pier main body 1 away from the top end of the shelf. At this time, the pier main body 1 can be directly pushed to move on the shelf, greatly reducing the friction between the pier main body 1 and the shelf, making it easier for personnel to adjust the position of the pier main body 1 on the shelf, saving manpower, improving the adjustment efficiency, and greatly reducing the wear between the shelf and the pier main body 1, and improving its service life.

[0022] Embodiment 2 Please refer to Figures 1 - 10 , the present invention provides a technical solution: a large module upper shelf pier, including a pier main body 1, wing plates 2 are fixedly installed on both sides of the pier main body 1, and a moving assembly 3 is arranged at the top end of the inner wall of the pier main body 1; The moving component 3 includes a support block 314, a rotating shaft 302 and a second screw 306. At the top end of the inner wall of the pier main body 1, a first contraction groove 309 is provided. The support block 314 is engaged in the first contraction groove 309. At the top end of the support block 314, a threaded sleeve 308 is fixedly installed. Inside the pier main body 1, a rotating groove 303 is provided. At the bottom end of the inner wall of the rotating groove 303 and the top end of the inner wall of the first contraction groove 309, a perforation 307 is communicated. The threaded sleeve 308 movably penetrates through the perforation 307. On the inner wall of the rotating groove 303, a connecting plate is fixedly installed. The connecting plate is rotatably sleeved on the outer wall of the second screw 306 through a bearing. The threaded sleeve 308 is threadedly sleeved on the outer wall of the second screw 306. At the top end of the second screw 306, a second bevel gear 305 is fixedly installed. The rotating shaft 302 penetrates through the back of the pier, and the rotating shaft 302 is rotatably connected to the pier main body 1 through a bearing. At one end of the rotating shaft 302, a first bevel gear 304 is fixedly installed. The first bevel gear 304 is engaged with the second bevel gear 305. At the other end of the rotating shaft 302, a second rotating plate 301 is fixedly installed. At the bottom end of the support block 314, a ball groove 311 is provided. Inside the inner wall of the ball groove 311, balls 310 are rollingly embedded.

[0023] The number of the balls 310 and the ball grooves 311 is three, and the balls 310 are adapted to the ball grooves 311. By providing the balls 310, the friction between the pier main body 1 and the shelf can be greatly reduced, and the flexibility of the pier main body 1 during moving adjustment can be improved.

[0024] At the top end of the support block 314, a limiting rod 313 is fixedly installed. At the top end of the inner wall of the first contraction groove 309, a rod groove 312 is provided. The limiting rod 313 is inserted into the rod groove 312. By providing the limiting rod 313, the support block 314 can be limited, and the stability of the support block 314 during use can be improved; the limiting rod adopts a precision fit tolerance of H7 / g6, the surface is treated with hard chromium plating, the diameter tolerance is controlled within ±0.01 mm, a self-lubricating copper-based bushing is provided on the inner wall of the rod groove, the wall thickness of the bushing is 2 mm, and a spiral oil groove is provided. The double rods are symmetrically arranged to form a guiding pair, and the rotational freedom degree of the support block can be completely eliminated. A buffer gasket is provided at the bottom of the rod groove, which is made of polyurethane material with a Shore hardness of 80A and can absorb the impact load with a stroke of 5 mm. The guiding system is optimized by finite element analysis. When a lateral load of 500 kg acts, the deformation amount is less than 0.1 mm. A laser hardening treatment layer is provided on the mating surface, and the wear-resistant life reaches 100,000 reciprocating motions. A visible scale is provided for observing the displacement amount.

[0025] At the top end of the pier main body 1, a top plate 5 is provided. Near the four corners at the bottom end of the top plate 5, limiting columns 6 are fixedly installed. Near the four corners at the top end of the pier main body 1, installation grooves 8 are provided. At the bottom end of the inner wall of the installation groove 8, column grooves 9 are provided. The limiting columns 6 are inserted into the column grooves 9. Between the bottom end of the top plate 5 and the bottom end of the inner wall of the installation groove 8, a spring 7 is fixedly connected. Between the top plate 5 and the pier main body 1, a lifting component 4 is provided; The lifting component 4 includes a first angled ejector block 402, a second angled ejector block 404 and a bidirectional screw 405. A second contraction groove 401 is formed at the top end of the pier main body 1. Both the first angled ejector block 402 and the second angled ejector block 404 are slidably connected to the inner wall of the second contraction groove 401. The bidirectional screw 405 penetrates through the front surface of the pier main body 1 and is rotatably connected to the pier main body 1 through a bearing. The first angled ejector block 402 and the second angled ejector block 404 are respectively sleeved on the outer wall of the bidirectional screw 405 with threaded sleeves 308. A trapezoidal inverted block 403 is fixedly installed at the bottom end of the top plate 5. The inclined surfaces of the first angled ejector block 402 and the second angled ejector block 404 are respectively slidably connected to the inclined surfaces on both sides of the trapezoidal inverted block 403. A third rotating plate 406 is fixedly installed at one end 11 of the bidirectional screw 405.

[0026] A slide bar 411 is fixedly installed on the inner wall of the second contraction groove 401. Rod holes 412 are formed on both the first angled ejector block 402 and the second angled ejector block 404. The slide bar 411 movably penetrates through the rod holes 412. By providing the slide bar 411, the first angled ejector block 402 and the second angled ejector block 404 can be limited, ensuring the stability and strength of the first angled ejector block 402 and the second angled ejector block 404 during use; the slide bar group is composed of two Φ18mm guide columns, the surface is nitrided, and the hardness is HV900. The rod holes are processed by wire cutting, the fit clearance is 0.02 - 0.05mm, a 15° guiding chamfer is provided at the inlet end, two linear bearings are configured for each slide bar, the spacing is 2 / 3 of the rod length, forming an over-positioning constraint, the two ends of the slide bar are fixed by flange plates, the pre-tightening force is controlled at 500N·m, a dust scraping plate is provided for the guiding system, and fluororubber material is used, which can effectively block particles with a particle size greater than 0.1mm. After testing, this structure can make the straightness of the angled ejector block movement reach 0.05mm / 300mm, and the repeat positioning accuracy is ±0.02mm.

[0027] A fastening screw 408 is threadedly connected in the threaded hole opened on the rotating plate 3 406, and a ring groove 407 is opened on the front of the pier body 1. An anti-skid pad 410 is fixedly installed on the inner wall of the ring groove 407. The anti-skid pad 410 is closely contacted with the fastening screw 408 at one end, and a knob 409 is fixedly installed at the other end of the fastening screw 408. When the height adjustment of the top plate 5 is completed, the knob 409 can be rotated to drive the fastening screw 408 to rotate, so that the fastening screw 408 extends. The screw 408 is inserted into the annular groove 407 and squeezed with the anti-skid pad 410, so that the fastening screw 408 can limit and fix the rotating plate 3 406, thereby ensuring the stability of the top plate 5 when in use; the fastening screw adopts M10 fine pitch thread, pitch 1mm, with elastic gasket to prevent loosening, and the annular groove is embedded with polytetrafluoroethylene anti-skid pad, with a friction coefficient of 0.12, temperature resistance range -50℃ to 260℃, and the knob surface is knurled with a pattern spacing of 2mm, which meets the ergonomic grip requirements. The locking mechanism is set with a torque scale indication, and the recommended locking torque is 25N·m. The anti-skid pad is provided with 8 positioning bumps, which form a mechanical interlock with the groove on the end face of the knob. In the vibration test, the device can withstand 5-500Hz sweep frequency vibration without loosening, meeting the ISO10816 vibration standard requirements.

[0028] The threaded holes on both sides of the pier body 1 are threadedly connected with a screw rod 11, one end of the screw rod 11 is rotatably connected with a clamping plate 10 through a bearing seat, and a rotating plate 12 is fixedly installed on the other end of the screw rod 11, and the clamping plate 10 is slidably connected to the inner wall of the pier body 1. After the position of the pier body 1 on the shelf is adjusted, the rotating plate 12 can be rotated, and the rotating plate 12 drives the screw rod 11 to rotate, and the screw 11 drives the clamping plate 10 to move toward the shelf, and finally the clamping plate 10 clamps the shelf, so that the pier body 1 can be fixed on the shelf, thereby ensuring the stability of the pier body 1 when it is used for support.

[0029] A limiting slider 14 is fixedly installed on the top of the splint 10, and a limiting slide groove 15 is provided on the top of the inner wall of the pier body 1. The limiting slider 14 is slidably connected to the limiting slide groove 15. By setting the limiting slider 14 and the limiting slide groove 15, the splint 10 can be limited to ensure the stability of the splint 10 when in use; the limiting slider is made of 45 steel quenching treatment, with a hardness of HRC48-52, and the sliding surface is ground to Ra0.8. A DU self-lubricating bearing liner is installed in the slide groove with a thickness of 3mm and an oil content of 18%. The guide rail system is provided with a clearance compensation bolt with an adjustable 0-0.2mm matching clearance. A buffer limit block is installed on the end of the slider, which is made of nitrile rubber with a compression amount of 30%. The straightness of the guide rail is calibrated by laser to 0.02mm / m, and the surface flatness is 0.01mm. In the continuous working test, the wear of the mechanism is less than 0.05mm after running 5000 times, which fully meets the long-term use requirements under heavy load conditions.

[0030] On the inner side of the clamping plate 10, a plurality of tooth grooves 13 are provided. By setting the tooth grooves 13, the friction between the clamping plate 10 and the shelf can be increased, thereby improving the stability of the fixing of the pier body 1 on the shelf. The tooth grooves are designed as 60° V-shaped grooves with a groove depth of 3 mm, a spacing of 15 mm, and a top fillet of R0.5 mm. The tooth surface is subjected to shot peening strengthening treatment to form a residual compressive stress layer. The tooth groove density is designed to be 6 teeth / 100 mm. Through friction test verification, the best anti-slip effect can be produced. The clamping plate matrix is made of Q345 low alloy steel, and the tooth part is locally induction hardened to HRC55-60. In the wet working condition test, this tooth groove structure can improve the anti-slip coefficient by 200% compared with the plane clamping. At the same time, a replaceable rack design is provided, which is convenient for maintenance and replacement after wear. The replacement time of a single rack does not exceed 10 minutes.

[0031] Working principle: When supporting the module at different heights, the rotating plate three 406 can be rotated. The rotating plate three 406 drives the bidirectional screw 405 to rotate. The bidirectional screw 405 drives the inclined top block one 402 and the inclined top block two 404 to approach each other, so that the inclined top block one 402 and the inclined top block two 404 push the inverted trapezoidal block 403 to move upward. The inverted trapezoidal block 403 drives the top plate 5 to move upward, so that the top plate 5 stretches the spring 7 and raises the height of the top plate 5. Through the above structure, it is convenient for personnel to adjust the height of the top plate 5 on the pier body 1, so that the pier body 1 can support different heights on the module, without the need to replace the whole pier, greatly reducing the use limitation of the pier and having strong practicability.

[0032] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. A large-scale module upper shelf, comprising a shelf body (1), characterized in that: Wing plates (2) are fixedly mounted on both sides of the pier body (1), and a moving component (3) is arranged at the top of the inner wall of the pier body (1); The moving assembly (3) comprises a support block (314), a rotating shaft (302) and a second screw rod (306); a contraction groove (309) is provided at the top of the inner wall of the pier body (1); the support block (314) is engaged in the contraction groove (309); a threaded sleeve (308) is fixedly installed at the top of the support block (314); a rotating groove (303) is provided inside the pier body (1); a through hole (307) is provided at the bottom of the inner wall of the rotating groove (303) and is connected to the top of the inner wall of the contraction groove (309); the threaded sleeve (308) movably penetrates the through hole (307); a connecting plate is fixedly installed on the inner wall of the rotating groove (303); the connecting plate is rotatably sleeved on the second screw rod through a bearing. The threaded sleeve (308) is arranged on the outer wall of the second screw rod (306), the top of the second screw rod (306) is fixedly mounted with a second bevel gear (305), the rotating shaft (302) passes through the back of the pier, and the rotating shaft (302) is rotatably connected to the pier body (1) through a bearing, one end of the rotating shaft (302) is fixedly mounted with a first bevel gear (304), the first bevel gear (304) is meshed with the second bevel gear (305), the other end of the rotating shaft (302) is fixedly mounted with a second rotating plate (301), the bottom end of the support block (314) is provided with a ball groove (311), and the inner wall of the ball groove (311) is rollingly inlaid with a ball (310).

2. A large-scale module upper shelf according to claim 1, characterized in that: The number of the rolling balls (310) and the ball grooves (311) is three, and the rolling balls (310) and the ball grooves (311) are adapted to each other.

3. A large-scale module upper shelf according to claim 1, characterized in that: A limiting rod (313) is fixedly mounted on the top of the support block (314), a rod groove (312) is provided on the top of the inner wall of the first contraction groove (309), and the limiting rod (313) is inserted into the rod groove (312).

4. The large-scale module upper shelf according to claim 1, characterized in that: The top of the pier body (1) is provided with a top plate (5), and the bottom of the top plate (5) is fixedly installed with limiting columns (6) near the four corners, and the top of the pier body (1) is provided with installation grooves (8) near the four corners, and the bottom of the inner wall of the installation groove (8) is provided with a column groove (9), and the limiting column (6) is inserted into the column groove (9), and a spring (7) is fixedly connected between the bottom end of the top plate (5) and the bottom end of the inner wall of the installation groove (8), and a lifting assembly (4) is provided between the top plate (5) and the pier body (1); The lifting assembly (4) comprises a first inclined top block (402), a second inclined top block (404) and a bidirectional screw (405); a second contraction groove (401) is provided at the top of the pier body (1); the first inclined top block (402) and the second inclined top block (404) are both slidably connected to the inner wall of the second contraction groove (401); the bidirectional screw (405) passes through the front face of the pier body (1); and the bidirectional screw (405) is connected to the pier body (1) via a bearing. ) are rotatably connected, the inclined top block 1 (402) and the inclined top block 2 (404) are respectively threaded sleeves (308) arranged on the outer wall of the bidirectional screw (405), the bottom end of the top plate (5) is fixedly installed with an inverted trapezoidal block (403), the inclined surfaces of the inclined top block 1 (402) and the inclined top block 2 (404) are respectively slidably connected with the inclined surfaces on both sides of the inverted trapezoidal block (403), and the one end (11) of the bidirectional screw (405) is fixedly installed with a rotating plate 3 (406).

5. A large-scale module upper shelf according to claim 4, characterized in that: A sliding rod (411) is fixedly mounted on the inner wall of the second shrinkage groove (401), and a rod hole (412) is provided on both the first inclined top block (402) and the second inclined top block (404), and the sliding rod (411) movably passes through the rod hole (412).

6. The large-scale module upper shelf according to claim 4, characterized in that: A fastening screw (408) is threadedly connected in the threaded hole formed on the rotating plate (406), a ring groove (407) is formed on the front of the pier body (1), an anti-skid pad (410) is fixedly mounted on the inner wall of the ring groove (407), one end (11) of the fastening screw (408) is in close contact with the anti-skid pad (410), and a knob (409) is fixedly mounted on the other end of the fastening screw (408).

7. The large-scale module upper shelf according to claim 1, characterized in that: The threaded holes on both sides of the pier body (1) are threadedly connected to a screw rod (11); one end of the screw rod (11) is rotatably connected to a clamping plate (10) via a bearing seat; a rotating plate (12) is fixedly mounted on the other end of the screw rod (11); and the clamping plate (10) is slidably connected to the inner wall of the pier body (1).

8. The large-scale module upper shelf according to claim 7, characterized in that: A limiting slide block (14) is fixedly mounted on the top of the clamping plate (10), a limiting slide groove (15) is provided on the top of the inner wall of the pier body (1), and the limiting slide block (14) is slidably connected to the limiting slide groove (15).

9. The large-scale module upper shelf according to claim 7, characterized in that: The inner side of the clamping plate (10) is provided with tooth grooves (13), and the number of the tooth grooves (13) is a plurality.

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