Common-frame transportation device

Abstract

The invention discloses a common-frame transportation device, and relates to the technical field of transportation devices, the common-frame transportation device comprises fixing supports and further comprises mounting assemblies arranged at the upper ends and the lower ends of the fixing supports, a bearing beam is arranged between the two fixing supports, the two ends of the bearing beam are connected with the fixing supports in a matched mode, and a mounting groove is formed in the bearing beam; limiting assemblies are arranged in the mounting grooves, limiting pieces are fixedly connected to the bearing beam between the limiting assemblies, positioning pins are fixedly connected to the limiting pieces, a mounting beam is fixedly connected between the fixing supports on one side of the bearing beam, locking assemblies are arranged at the two ends of the mounting beam, a universal chassis is arranged below the fixing supports, and a guide rail is fixedly connected to the universal chassis. A universal base module is arranged on the guide rail, a lower mushroom head bottom at the bottom end of the fixing support is connected with a universal chassis through the base module, the limiting size of the device can be flexibly adjusted according to the actual boundary dimension of goods, and meanwhile the locking device is arranged so that the goods can be better locked and fixed.

Description

Technical Field

[0001] The invention relates to the technical field of transport devices, in particular to a common frame transport device. Background Art

[0002] In cargo transportation, fixed racks play a vital role. They can ensure the stability and safety of cargo during transportation. Among them, fixed racks for fixing cargo are often used. In cargo transportation, the main function of fixed racks is to prevent cargo from moving, tipping over or being damaged during transportation, thereby ensuring the safety of transportation and the integrity of cargo. Cargo transportation fixed racks play an important role in ensuring transportation safety and the integrity of cargo. When selecting and using fixed racks, comprehensive consideration should be given to the characteristics of the cargo, and safety standards and operating specifications should be strictly followed.

[0003] At present, some traditional fixing racks can achieve the limiting effect of fixing the goods when they are actually used. However, in actual use, the fixing size of the fixing rack body cannot be flexibly adjusted, and thus the effect of flexibly clamping and fixing the goods according to the actual size of the goods cannot be achieved, and the compatibility is poor. At the same time, when fixing the goods, the traditional fixing rack generally requires the operator to fasten and fix the goods with a fixing rope. This method is cumbersome and inconvenient to operate, not flexible to use, low in construction efficiency, and not good enough in use effect. Summary of the invention

[0004] The present invention provides a common frame transport device, which solves the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A common frame transportation device includes a fixed bracket, and also includes: installation components are arranged at the upper and lower ends of the fixed bracket, two fixed brackets are arranged, and a load-bearing beam is arranged between the two fixed brackets, both ends of the load-bearing beam are cooperatively connected with the fixed bracket, an installation groove is opened on the load-bearing beam, a limit assembly is arranged in the installation groove, a limit plate is fixedly connected to the load-bearing beam between the limit assemblies, a positioning pin is fixedly connected to the limit plate, the installation beam is fixedly connected between the fixed brackets on one side of the load-bearing beam, and locking components are arranged at both ends of the installation beam.

[0007] As a preferred technical solution of the present invention, the mounting assembly includes an upper mushroom head bottom and a lower mushroom head bottom, the upper mushroom head bottom is connected to the top of the fixed bracket, the top of the upper mushroom head bottom is fixedly connected to the mushroom head body, and the lower mushroom head bottom is fixedly arranged at the bottom end of the fixed bracket.

[0008] As a preferred technical solution of the present invention, a universal chassis is arranged below the fixed bracket, a guide rail is fixedly connected to the universal chassis, a universal base module is arranged on the guide rail, and the lower mushroom head bottom at the bottom end of the fixed bracket is connected to the universal chassis through the base module.

[0009] As a preferred technical solution of the present invention, the limiting assembly includes a driving column arranged on both sides of the mounting groove on the load-bearing beam, the two ends of the driving column are respectively fixedly connected to the transmission screw, the two ends of the transmission screw are threadedly sleeved with a mounting platform, and the mounting platform is fixedly connected to the extrusion block.

[0010] As a preferred technical solution of the present invention, the side walls of the load-bearing beam on both sides of the extrusion block are fixedly connected to the guide rod, the two sides of the mounting platform are slidably connected to the guide rod, and the side wall of the fixed bracket on one side of the transmission screw axis is rotated to penetrate the transmission column.

[0011] As a preferred technical solution of the present invention, the locking assembly includes a pull-out plate slidably arranged on both sides of the mounting beam, the pull-out plate is fixedly connected to a fixed frame, a pressure plate is arranged on one side of the fixed frame, and one end of the rotating shaft of the pressure plate is fixedly connected to the fixed frame by a threaded connection.

[0012] As a preferred technical solution of the present invention, the side wall of the mounting beam is fixedly connected to the fixed seat, a rotating column is arranged on one side of the fixed seat, both ends of the rotating column are fixedly connected to the threaded columns, and the end of the threaded column of the rotating column close to the fixed seat is rotatably connected to the fixed seat.

[0013] As a preferred technical solution of the present invention, a threaded sleeve is provided on the threaded column, a sliding block is fixedly connected to the threaded sleeve, and one side of the top end of the sliding block is fixedly connected to a fixing frame.

[0014] As a preferred technical solution of the present invention, a coupling is arranged at one end of the threaded column away from the fixed seat, the coupling is connected to the threaded column through a universal joint, and a transmission shaft is arranged at one end of the coupling away from the threaded column.

[0015] As a preferred technical solution of the present invention, the upper mushroom head bottom and the lower mushroom head bottom are both cavity structures with side openings, the base module is provided with bolt connection holes, and the bolt connection holes of the base module are provided with T-bolts.

[0016] The invention has the following advantages: when in use, the operator first determines the actual size of the goods, and then drives the transmission screws at both ends of the driving column to rotate through the transmission column, and the mounting platform on the transmission screw drives the extrusion block to move, and the two ends of the goods can be limited and fixed under the action of the extrusion block. At the same time, the cargo frame can be positioned to a certain extent under the action of the positioning pin, and the installation platform can be prevented from moving beyond the range under the action of the limiting plate, so as to ensure that the goods can be placed between the two extrusion blocks, and then the extrusion blocks are used for limited and fixed. After the initial fixation, the operator can drive the threaded column to rotate through the transmission shaft and the coupling. During the rotation of the threaded column, the upper slider can be driven to move through the threaded sleeve, and the slider can drive the pressure plate and the pull-out plate between the fixed frame to move, so that the pressure plate moves to the connecting leg close to the goods, and then the pressure plate is rotated to achieve tightening, and the pressure plate can fix the cargo leg, thereby achieving locking of the goods.

[0017] In general, the device can flexibly adjust the limit size according to the actual outer dimensions of the goods. At the same time, the locking device is provided to better lock and fix the goods, making the operation more convenient, and the fixing and installation of the goods more efficient and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a common frame transport device Figure 1 .

[0019] Figure 2 A schematic diagram of the structure of a common frame transport device Figure 2 .

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A.

[0021] Figure 4 It is a schematic diagram of the front structure of a common frame transport device.

[0022] Figure 5 The figure is a schematic diagram of the structure of a common frame transport device from a top view.

[0023] Figure 6 The present invention is a schematic diagram of the structure of a chassis in a common frame transport device.

[0024] In the figure: 1. fixing bracket; 2. guide rail; 3. base module; 4. T-bolt; 5. bolt connection hole; 6. lower mushroom head bottom; 7. upper mushroom head bottom; 8. universal chassis; 9. load-bearing beam; 10. mounting beam; 11. pull-out plate; 12. fixing frame; 13. pressure plate; 14. slider; 15. threaded sleeve; 16. transmission shaft; 17. coupling; 18. threaded column; 19. rotating column; 20. mounting groove; 21. extrusion block; 22. mounting table; 23. positioning pin; 24. limit plate; 25. guide rod; 26. fixing seat; 27. driving column; 28. transmission screw; 29. ​​driving column; 30. mushroom head body. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example 1, please refer to Figure 1-Figure 6 A common frame transportation device includes a fixed bracket 1, and also includes: installation components are arranged at both ends of the fixed bracket 1, two fixed brackets 1 are arranged, and a load-bearing beam 9 is arranged between the two fixed brackets 1, and both ends of the load-bearing beam 9 are fixedly connected with the fixed bracket 1, and an installation groove 20 is opened on the load-bearing beam 9, and a limit assembly is arranged in the installation groove 20, and a limit plate 24 is fixedly connected to the load-bearing beam 9 between the limit assemblies, and a positioning pin 23 is fixedly connected to the limit plate 24, and a mounting beam 10 is fixedly connected between the fixed brackets 1 on one side of the load-bearing beam 9, and locking components are arranged at both ends of the mounting beam 10.

[0027] When this embodiment is actually used, the limit assembly can be used to adjust the size of goods of different types, and the size of two types of shelves can be quickly converted. The locking assembly can adapt to the connecting legs of goods of different types, and the tightness of the goods can be quickly adjusted. The operation is convenient and flexible, and the efficiency of limiting and fixing the goods is increased.

[0028] The mounting assembly includes an upper mushroom head bottom 7 and a lower mushroom head bottom 6, wherein the upper mushroom head bottom 7 is connected to the top of the fixing bracket 1, the top of the upper mushroom head bottom 7 is fixedly connected to the mushroom head body 30, and the lower mushroom head bottom 6 is fixedly arranged at the bottom of the fixing bracket 1.

[0029] The limiting assembly includes a driving column 27 arranged on both sides of the mounting groove 20 on the load-bearing beam 9, and the two ends of the driving column 27 are respectively fixedly connected to the transmission screw 28. The threaded sleeves 15 at both ends of the transmission screw 28 are provided with a mounting platform 22, and the mounting platform 22 is fixedly connected to the extrusion block 21.

[0030] The side walls of the load-bearing beam 9 on both sides of the extrusion block 21 are fixedly connected to the guide rod 25, and the two sides of the mounting platform 22 are slidably connected to the guide rod 25. The side wall of the fixed bracket 1 on one axial side of the transmission screw 28 rotates and penetrates the transmission column 29, and the end of the transmission column 29 is fixedly connected to the end of the transmission screw 28. When actually in use, the operator connects the transmission column 29 through an external driving device to drive the transmission screw 28 to rotate, thereby realizing the flexible adjustment of the extrusion block 21 to the limit size of the goods.

[0031] The locking assembly includes a pull-out plate 11 slidably arranged on both sides of the mounting beam 10, a fixing frame 12 is fixedly connected to the pull-out plate 11, a pressing plate 13 is arranged on one side of the fixing frame 12, and one end of the rotating shaft of the pressing plate 13 is fixedly connected to the fixing frame 12 by a threaded connection;

[0032] The side wall of the mounting beam 10 is fixedly connected to the fixing seat 26 , a rotating column 19 is provided on one side of the fixing seat 26 , and both ends of the rotating column 19 are fixedly connected to the threaded column 18 , and the end of the threaded column 18 on the side of the rotating column 19 close to the fixing seat 26 is rotatably connected to the fixing seat 26 .

[0033] A threaded sleeve 15 is provided on the threaded column 18, and a slider 14 is fixedly connected to the threaded sleeve 15, and one side of the top of the slider 14 is fixedly connected to the fixed frame 12; a coupling 17 is provided on the end of the threaded column 18 on the side of the rotating column 19 away from the fixed seat 26, and the coupling 17 is connected to the threaded column 18 through a universal joint, and a transmission shaft 16 is provided on the end of the coupling 17 away from the threaded column 18.

[0034] Then, the transmission screw 28 at both ends of the driving column 27 is driven to rotate through the transmission column 29, and the mounting platform 22 on the transmission screw 28 drives the extrusion block 21 to move. Under the action of the extrusion block 21, the two ends of the cargo can be limited and fixed. At the same time, under the action of the positioning pin 23, the cargo frame can be positioned to a certain extent, and the limiting plate 24 can prevent the mounting platform 22 from moving beyond the range to ensure that the cargo can be placed between the two extrusion blocks 21. Then, the extrusion block 21 is used for limited fixation. After the initial fixation, the operator can drive the threaded column 18 to rotate through the transmission shaft 16 and the coupling 17. During the rotation of the threaded column 18, the upper slider 14 will be driven to move through the threaded sleeve 15. The slider 14 will drive the pressure plate 13 and the pull-out plate 11 between the fixed frame 12 to move, so that the pressure plate 13 moves to the connecting leg close to the cargo, and then the pressure plate 13 is rotated to achieve tightening. The pressure plate 13 can fix the cargo leg and thus achieve locking of the cargo.

[0035] Example 2, please refer to Figure 1-Figure 6The mounting assembly includes an upper mushroom head bottom 7 and a lower mushroom head bottom 6, the upper mushroom head bottom 7 is connected to the top of the fixed bracket 1, the top of the upper mushroom head bottom 7 is fixedly connected to the mushroom head body 30, and the lower mushroom head bottom 6 is fixedly arranged at the bottom of the fixed bracket 1.

[0036] A universal chassis 8 is arranged below the fixed bracket 1 , a guide rail 2 is fixedly connected to the universal chassis 8 , a universal base module 3 is arranged on the guide rail 2 , and a lower mushroom head bottom 6 at the bottom end of the fixed bracket 1 is connected to the universal chassis 8 through the base module 3 .

[0037] The limiting assembly includes a driving column 27 arranged on both sides of the mounting groove 20 on the load-bearing beam 9, and the two ends of the driving column 27 are respectively fixedly connected to the transmission screw 28. The threaded sleeves 15 at both ends of the transmission screw 28 are provided with a mounting platform 22, and the mounting platform 22 is fixedly connected to the extrusion block 21.

[0038] The side walls of the load-bearing beam 9 on both sides of the extrusion block 21 are fixedly connected to the guide rod 25, and the two sides of the mounting platform 22 are slidably connected to the guide rod 25. The side wall of the fixed bracket 1 on one axial side of the transmission screw 28 rotates and penetrates the transmission column 29, and the end of the transmission column 29 is fixedly connected to the end of the transmission screw 28. When actually in use, the operator connects the transmission column 29 through an external driving device to drive the transmission screw 28 to rotate, thereby realizing the flexible adjustment of the extrusion block 21 to the limit size of the goods.

[0039] The locking assembly includes a pull-out plate 11 slidably arranged on both sides of the mounting beam 10, and a fixing frame 12 is fixedly connected to the pull-out plate 11. A pressure plate 13 is arranged on one side of the fixing frame 12, and one end of the rotating shaft of the pressure plate 13 is fixedly connected to the fixing frame 12 by a threaded connection. In actual use, the pressure plate 13 is rotated and threadedly connected to the fixing frame 12 through the rotating shaft, which can not only realize rotation but also realize tightening, thereby realizing the fixation of the cargo support legs by the pressure plate 13.

[0040] The side wall of the mounting beam 10 is fixedly connected to the fixing seat 26, a rotating column 19 is arranged on one side of the fixing seat 26, both ends of the rotating column 19 are fixedly connected to the threaded column 18, the end of the threaded column 18 on the side of the rotating column 19 close to the fixing seat 26 is rotatably connected to the fixing seat 26; a threaded sleeve 15 is arranged on the threaded column 18, the threaded sleeve 15 is fixedly connected to the slider 14, and one side of the top end of the slider 14 is fixedly connected to the fixing frame 12.

[0041] A coupling 17 is provided at one end of the threaded column 18 on the side of the rotating column 19 away from the fixed seat 26. The coupling 17 is connected to the threaded column 18 through a universal joint. A transmission shaft 16 is provided at one end of the coupling 17 away from the threaded column 18. In actual use, the operator can drive the threaded column 18 to rotate through the transmission shaft 16 and the coupling 17.

[0042] The upper mushroom head bottom 7 and the lower mushroom head bottom 6 are both hollow structures with side openings. The base module 3 is provided with bolt connection holes 5, and the bolt connection holes 5 of the base module 3 are provided with T-bolts 4. The universal chassis 8 is also provided with limiting holes that cooperate with the T-bolts 4. In actual use, the universal chassis 8 can achieve compatibility with the size of the cargo transport rack and rapid adjustment of the loading position without changing the basic structure of the transport rack.

[0043] When this embodiment is actually used, the working effect thereof is as follows: the device can flexibly adjust the limit size according to the actual outer size of the goods, and at the same time, a locking device is provided to better lock and fix the goods, making the operation more convenient, and the fixing and installation efficiency of the goods is higher, the practicability is stronger, and the positioning of the goods can be better achieved.

[0044] Example 3, please refer to Figure 1-Figure 6 The actual application scenario of this device is to fix and limit the cargo during the transportation process. The actual working principle is that the operator first determines the actual size of the cargo, and then drives the transmission screw 28 at both ends of the driving column 27 to rotate through the transmission column 29, and the mounting platform 22 on the transmission screw 28 drives the extrusion block 21 to move. Under the action of the extrusion block 21, the two ends of the cargo are limited and fixed. At the same time, under the action of the positioning pin 23, the cargo frame can be positioned to a certain extent, and the action of the limiting piece 24 can prevent the mounting platform 22 from moving out of the range. Ensure that the goods can be placed between the two extrusion blocks 21, and then be limited and fixed by the extrusion blocks 21. After the initial fixation, the operator can drive the threaded column 18 to rotate through the transmission shaft 16 and the coupling 17. During the rotation of the threaded column 18, the upper slider 14 will be driven to move through the threaded sleeve 15. The slider 14 will drive the pressing plate 13 and the pull-out plate 11 between the fixing frame 12 to move, so that the pressing plate 13 moves to the connection leg close to the goods, and then the pressing plate 13 is rotated to achieve tightening. The pressing plate 13 can fix the cargo leg, thereby achieving locking of the cargo;

[0045] The device can flexibly adjust the limit size according to the actual outer size of the goods. At the same time, the locking device is provided to better lock and fix the goods, making the operation more convenient and the fixing and installation efficiency of the goods higher.

[0046] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0051] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A common frame transport device, comprising a fixed frame (1), characterized in that: Also includes: The fixing bracket (1) is provided with mounting components at both the upper and lower ends. Two fixing brackets (1) are provided, and a load-bearing beam (9) is provided between the two fixing brackets (1). Both ends of the load-bearing beam (9) are connected to the fixing bracket (1) in a coordinated manner. The load-bearing beam (9) is provided with a mounting groove (20), and a limit assembly is provided in the mounting groove (20). The load-bearing beam (9) between the limit assemblies is fixedly connected to a limit plate (24), and the limit plate (24) is fixedly connected to a positioning pin (23). The fixing brackets (1) on one side of the load-bearing beam (9) are fixedly connected to the mounting beam (10), and locking components are provided at both ends of the mounting beam (10).

2. A common frame transport device according to claim 1, characterized in that: The mounting assembly comprises an upper mushroom head bottom (7) and a lower mushroom head bottom (6); the upper mushroom head bottom (7) is connected to the top of a fixed bracket (1); the top of the upper mushroom head bottom (7) is fixedly connected to a mushroom head body (30); and the lower mushroom head bottom (6) is fixedly arranged at the bottom of the fixed bracket (1).

3. A common frame transport device according to claim 2, characterized in that: A universal chassis (8) is arranged below the fixed bracket (1), a guide rail (2) is fixedly connected to the universal chassis (8), a universal base module (3) is arranged on the guide rail (2), and a lower mushroom head bottom (6) at the bottom end of the fixed bracket (1) is connected to the universal chassis (8) via the base module (3).

4. A common frame transport device according to claim 1, characterized in that: The position limiting assembly comprises a driving column (27) arranged on both sides of a mounting groove (20) on a load-bearing beam (9), the two ends of the driving column (27) are respectively fixedly connected to a transmission screw rod (28), threaded sleeves (15) at both ends of the transmission screw rod (28) are provided with a mounting platform (22), and an extrusion block (21) is fixedly connected to the mounting platform (22).

5. A common frame transport device according to claim 4, characterized in that: The side walls of the bearing beams (9) on both sides of the extrusion block (21) are fixedly connected to the guide rods (25), the two sides of the mounting platform (22) are slidably connected to the guide rods (25), and the transmission screw (28) is rotatably connected to the side wall of the fixed bracket (1) on one axial side to penetrate the transmission column (29).

6. A common frame transport device according to claim 1, characterized in that: The locking assembly comprises a pull-out plate (11) slidably arranged on both sides of the mounting beam (10); a fixing frame (12) is fixedly connected to the pull-out plate (11); a pressing plate (13) is arranged on one side of the fixing frame (12); and one end of the rotating shaft of the pressing plate (13) is fixedly connected to the fixing frame (12) by means of a threaded connection.

7. A common frame transport device according to claim 6, characterized in that: The side wall of the mounting beam (10) is fixedly connected to a fixing seat (26); a rotating column (19) is arranged on one side of the fixing seat (26); both ends of the rotating column (19) are fixedly connected to threaded columns (18); and the end of the threaded column (18) on the side of the rotating column (19) close to the fixing seat (26) is rotatably connected to the fixing seat (26).

8. A common frame transport device according to claim 7, characterized in that: The threaded sleeve (15) on the threaded column (18) is provided with a threaded sleeve (15), a slider (14) is fixedly connected to the threaded sleeve (15), and one side of the top end of the slider (14) is fixedly connected to the fixing frame (12).

9. A common frame transport device according to claim 8, characterized in that: A coupling (17) is arranged at one end of the threaded column (18) on the side of the rotating column (19) away from the fixed seat (26); the coupling (17) is connected to the threaded column (18) via a universal joint; and a transmission shaft (16) is arranged at one end of the coupling (17) away from the threaded column (18).

10. A common frame transport device according to claim 3, characterized in that: The upper mushroom head bottom (7) and the lower mushroom head bottom (6) are both hollow structures with side openings, a bolt connection hole (5) is provided on the base module (3), and a T-bolt (4) is provided on the bolt connection hole (5) of the base module (3).

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