Combined type supporting frame

Abstract

The combined supporting frame comprises a frame body and a plurality of auxiliary supporting structures arranged on the frame body, each auxiliary supporting structure comprises a first fixing base, a second fixing base and a plurality of expansion assemblies, and the first fixing bases and the second fixing bases are arranged at intervals in the vertical direction; the expansion assembly comprises a driving part and a deformation part, the driving part can move along with the first fixing base, and the deformation part is movably arranged on the second fixing base and connected with the driving part so that the driving part can be in linkage with the deformation part to form a folded state and an unfolded state; wherein the deformation part is detachably provided with a supporting column, when the supporting column is matched with the folded state of the deformation part, the supporting column is parallel to the deformation part, and when the supporting column is matched with the unfolded state of the deformation part, the supporting column is perpendicular to the deformation part. The technical problems that in the prior art, due to eccentric connection, the bearing capacity of a supporting frame is reduced, and load distribution is uneven are solved.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, and in particular to a combined support frame. Background Art

[0002] As a key temporary support structure in building construction, modular mounting frames are designed to ensure the smooth progress of each construction phase and provide a safe and reliable working platform. This type of mounting frame has modular design characteristics and is composed of multiple standardized components. It can be flexibly assembled and adjusted according to specific construction requirements and on-site environment to meet the needs of different types of construction projects.

[0003] Modern modular mounting frames are mostly movable construction auxiliary facilities. Their flexibility and convenience greatly improve the efficiency of the construction site. However, many mounting frames currently used use eccentric connections at the node connections. This connection relies on anti-slip force to transfer loads and internal forces. Compared with the center-aligned connection method, eccentric connections may lead to a decrease in bearing capacity and increase the risk of structural instability. Since the load transfer path is not the most direct or efficient, it may cause structural deformation or instability, which in turn affects the safety and stability of the entire mounting frame and increases the possibility of safety accidents. Summary of the invention

[0004] In view of the deficiencies existing in the prior art, the present invention provides a combined support frame, which solves the technical problems of reduced bearing capacity and uneven load distribution caused by eccentric connection in the prior art support frame.

[0005] According to an embodiment of the present invention, a combined support frame includes a frame body, wherein the frame body is provided with a plurality of support legs, and the plurality of support legs are provided with a plurality of auxiliary support structures in a one-to-one correspondence, wherein the auxiliary support structures include:

[0006] A first fixed base is independently provided with the corresponding supporting leg and can move up and down relative to the supporting leg;

[0007] A second fixed base is suspended below the first fixed base;

[0008] A plurality of expansion components are arranged at intervals between the first fixed base and the second fixed base, the expansion components include a driving part and a deformation part, the driving part is arranged on the first fixed base and can move with the first fixed base, the deformation part is movably arranged on the second fixed base and connected with the driving part, so that the driving part links the deformation part to form a folded state and an unfolded state, in the folded state, the deformation part is arranged upwardly and tilted relative to the second fixed base, and in the unfolded state, the deformation part is arranged horizontally;

[0009] In which, the deformation part is respectively formed with a first mounting point and a second mounting point along two vertical directions, and the support column can be selectively set at the first mounting point or the second mounting point. When the support column is set at the first mounting point, it is used to cooperate with the folded state of the deformation part and make the support column and the deformation part parallel to each other. When the support column is set at the second mounting point, it is used to cooperate with the unfolded state of the deformation part and make the support column and the deformation part perpendicular to each other.

[0010] Preferably, along the length direction of the deformation part, it has a first end and a second end, the first mounting point and the second mounting point are formed at the first end of the deformation part, and the second end of the deformation part is rotatably provided with a transfer rod, and the transfer rod is connected to the second fixed base.

[0011] Preferably, the cross section of the transfer rod is V-shaped.

[0012] Preferably, a notch is provided at one end of the driving portion connected to the deformation portion, and the deformation portion is movably disposed in the notch, so that the driving portion can move back and forth between the first end and the second end of the deformation portion.

[0013] Preferably, a roller is provided in the notch for rotationally fitting with the deformation portion.

[0014] Preferably, a guide assembly is arranged between the first fixed base and the second fixed base, and the guide assembly includes a first guide rod, a second guide rod and a third guide rod which are connected in sequence, the first guide rod and the third guide rod are respectively connected to the first fixed base and the second fixed base, and two rotation points are formed at the connection between the second guide rod and the first guide rod and the third guide rod, which are used to make the first guide rod and the third guide rod rotate synchronously around each of the rotation points.

[0015] Preferably, the first guide rod, the second guide rod and the third guide rod are jointly configured into a Z-shaped structure.

[0016] Preferably, the first fixed base is detachably provided with a counterweight.

[0017] Preferably, the first fixed base is provided with a locking assembly for locking or unlocking the counterweight block, the locking assembly comprising a first wedge block, a second wedge block and a plurality of locking blocks, the first wedge block slidingly fits with the second wedge block for linking the second wedge block to move in an up and down direction, the locking block is rotatably arranged on the second wedge block, and when the second wedge block moves upward, the locking block can be rotated to press the counterweight block, and when the second wedge block moves downward, the locking block can be rotated in the opposite direction to release the counterweight block.

[0018] Preferably, the second wedge-shaped block is provided with a plurality of limiting openings, and the plurality of locking blocks are arranged in the plurality of limiting openings in a one-to-one correspondence, and can abut against the side walls of the limiting openings after the counterweight block is released.

[0019] Compared with the prior art, the present invention has the following beneficial effects: by arranging an auxiliary support structure at each support leg, the auxiliary support structure can bear part of the load and increase the contact area with the ground to ensure more uniform and effective load distribution, reduce risks, and improve the reliability of the overall structure; at the same time, the support frame is placed on the ground, and the first fixed base can be moved toward the second fixed base under the influence of gravity from above, so that the deformation part can be prompted to switch from the folded state to the unfolded state through the driving part, and the deformation part in the unfolded state is arranged horizontally to expand the area of ​​the support frame, and after distributing a suitable load, the problems of unstable center of gravity and uneven load distribution caused by the eccentric connection above are avoided; at the same time, the first installation point and the second installation point formed by the deformation part can change the installation position of the support column, so that when the deformation part is in the unfolded state, the support column can be perpendicular to it and then supported on the ground to improve its bearing capacity; on the contrary, when the deformation part is in the folded state, the support column can be parallel to it, which is used to store the support column, which is convenient for quick assembly and disassembly on the one hand, and convenient for storing the support column to avoid loss on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a combined support frame in an embodiment of the present invention, in which the deformation part is in an expanded state;

[0021] Figure 2 It is a structural schematic diagram of a combined support frame in an embodiment of the present invention, in which the deformation portion is in a folded state;

[0022] Figure 3 It is a structural schematic diagram of a combined support frame in one embodiment of the present invention;

[0023] Figure 4 for Figure 3 Sectional view along line AA.

[0024] In the figure:

[0025] 1. First fixed base; 2. Second fixed base; 3. Extension assembly; 301. Drive unit; 302. Deformation unit; 4. First mounting point; 5. Second mounting point; 6. Support column; 7. Transfer rod; 8. Roller; 9. Guide assembly; 901. First guide rod; 902. Second guide rod; 903. Third guide rod; 10. Counterweight; 11. Locking assembly; 111. First wedge block; 112. Second wedge block; 113. Locking block; 114. Limit opening. DETAILED DESCRIPTION

[0026] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", etc. 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The following will be combined with the attached Figure 1-4 , the present invention is further described.

[0028] In the embodiment of the present invention, Figure 1-Figure 2 As shown, the combined support frame comprises: a frame body, the frame body is provided with a plurality of support legs, the plurality of support legs are provided with a plurality of auxiliary support structures in one-to-one correspondence, the auxiliary support structure comprises: a first fixed base 1, a second fixed base 2 and a plurality of expansion components 3; the first fixed base 1 and the corresponding support legs are independently provided and can move up and down relative to the support legs; the second fixed base 2 is suspended below the first fixed base 1;

[0029] A plurality of expansion components 3 are arranged at intervals between the first fixed base 1 and the second fixed base 2, and the expansion components 3 include a driving part 301 and a deformation part 302. The driving part 301 is arranged on the first fixed base 1 and can move with the first fixed base 1. The deformation part 302 is movably arranged on the second fixed base 2 and connected with the driving part 301, so that the driving part 301 links the deformation part 302 to form a folded state and an unfolded state. In the folded state, the deformation part 302 is arranged obliquely upward relative to the second fixed base 2, and in the unfolded state, the deformation part 302 is arranged horizontally.

[0030] Among them, the deformation part 302 is respectively formed with a first mounting point 4 and a second mounting point 5 along two vertical directions, and the support column 6 can be selectively set at the first mounting point 4 or the second mounting point 5. When the support column 6 is set at the first mounting point 4, it is used to cooperate with the folded state of the deformation part 302, and make the support column 6 and the deformation part 302 parallel to each other. When the support column 6 is set at the second mounting point 5, it is used to cooperate with the unfolded state of the deformation part 302, and make the support column 6 and the deformation part 302 perpendicular to each other.

[0031] Specifically, in the embodiment of the present invention, the support frame includes a frame body and a plurality of support legs (not shown) provided on the frame body. The horizontal bars and vertical bars in the frame body are spliced ​​together to form a frame structure. The number of horizontal and vertical bars can be reasonably selected according to the use scenario. Of course, in order to facilitate the propulsion of the support frame, a pulley with a brake is provided at the support leg.

[0032] In an embodiment of the present invention, in order to improve the stability of each supporting leg and balance its bearing capacity, an auxiliary supporting structure is provided at each supporting leg, and the auxiliary supporting structure includes a first fixed base 1, a second fixed base 2 and a plurality of expansion components 3. The first fixed base 1 is used to be connected to the frame and is arranged close to the corresponding supporting leg. At the same time, the first fixed base 1 is movably arranged so that it can move up and down under the action of external force. The above-mentioned second fixed base 2 is located below the first fixed base 1 with a spacing therebetween, which is used to support the second fixed base 2 on the ground or suspend it above the ground under the linkage of the first base.

[0033] Specifically, in order to change the distance between the first fixed base 1 and the second fixed base 2, in this embodiment, a plurality of expansion components 3 (such as Figure 1 , Figure 2 As shown, in this embodiment, two expansion components 3 arranged in a mirror image are used as an example. The arrangement of multiple expansion components 3 also improves the stability therebetween and can bear the bearing capacity of the dependent parts); the above-mentioned expansion component 3 includes a driving part 301 and a deformation part 302. The driving part 301 serves as a bridge connecting the first fixed base 1 and the deformation part 302. One function of the driving part 301 is to move synchronously with the first fixed base 1, and the other function is to link the deformation part 302 to form an expanded state after deformation (such as Figure 1 shown) and folded state (as Figure 2 By changing the position of the deformation part 302, the support force of the expansion component 3 can be achieved. That is, in the unfolded state, the deformation part 302 is in a horizontal position, so that it is fully extended; in the folded state, the deformation part 302 is inclined upward relative to the second fixed base 2; when not in use, the deformation part 302 will be folded to occupy a smaller space.

[0034] On the other hand, the deformation part 302 is provided with a first mounting point 4 and a second mounting point 5, which are arranged perpendicularly to each other in different directions, and are used to select one of the mounting points to mount the support column 6; when the support column 6 is mounted at the first mounting point 4, it is used to match the folded state, and the support column 6 and the deformation part 302 are arranged parallel to each other at this time, so as to store the above-mentioned support column 6; on the contrary, when the support column 6 is mounted at the second mounting point 5, it is used to match the unfolded state, and the support column 6 and the deformation part 302 are arranged perpendicularly to each other at this time, so as to make the support column 6 and the second fixed base 2 jointly supported on the ground. Of course, since the support column 6 and the deformation part 302 are connected in a detachable manner, in order to simplify the installation method, a threaded connection can be adopted between the two.

[0035] Therefore, by providing auxiliary support structures at each support leg, it is not only able to bear part of the load, but also to increase the contact area with the ground; ensuring a more uniform and effective load distribution, reducing the risk caused by excessive local pressure, and thus improving the stability and reliability of the overall structure. When the support frame is placed on the ground and is affected by gravity from above, the first fixed base 1 will move toward the second fixed base 2, using gravity as a trigger mechanism to cause the drive unit 301 to automatically cause the deformation unit 302 to switch from the folded state to the unfolded state, without the need for additional operations or power sources, simplifying the use process. The deformable part 302 in the unfolded state is arranged horizontally, which expands the coverage area of ​​the support frame, so that the load can be dispersed more reasonably, avoiding the problems of unstable center of gravity and uneven load distribution caused by the eccentric connection above, and improving the safety of the structure; and the first installation point 4 and the second installation point 5 formed by the deformable part 302 are combined to allow the installation position of the support column 6 to be adjusted. When the deformable part 302 is in the unfolded state, the support column 6 can be vertically supported on the ground, which enhances the bearing capacity; while in the folded state, the support column 6 is parallel to the deformable part 302, which is convenient for storage and the rapid assembly and disassembly and storage of the support column, effectively preventing loss. At the same time, the parallel storage design of the support column 6 in the folded state is convenient for rapid assembly and disassembly, saves storage space, and greatly improves the portability of the equipment.

[0036] like Figure 1-Figure 3As shown, in one embodiment, along the length direction of the deformation part 302, it has a first end and a second end, the first mounting point 4 and the second mounting point 5 are formed at the first end of the deformation part 302, and the second end of the deformation part 302 is rotatably provided with a transfer rod 7, and the transfer rod 7 is connected to the second fixed base 2. Specifically, in order to movably install the deformation part 302 at the second fixed base 2; in this embodiment, a transfer rod 7 is arranged between the two, so that one end of the transfer rod 7 is connected to the second fixed base 2, and the other end thereof is rotatably connected to the deformation part 302; when the driving part 301 applies a downward force to the deformation part 302, the deformation part 302 can be caused to rotate around the rotation point of the transfer rod 7, so that it gradually switches from the inclined state to the horizontal state, that is, from the folded state to the unfolded state; conversely, when the driving part 301 applies an upward force to the deformation part 302, the deformation part 302 rotates in the opposite direction to switch from the unfolded state to the folded state. By limiting the movement of the deformable portion 302 within a predictable range, the transfer rod 7 helps to avoid accidental excessive bending or stretching, thereby improving the safety and reliability of the system. In addition, in the unfolded state, the transfer rod 7 can also serve as an additional support point to increase the overall rigidity of the structure. Of course, Figure 2 The folded state shown can also be a partially folded state, which can reduce the movement stroke of the first fixed base 1 and the deformation part 302. In addition, the presence of the transfer rod 7 ensures that the deformation part 302 will not be unnecessarily displaced or twisted during the unfolding or folding process, thereby enhancing the stability of the overall structure. Especially in the case of carrying heavy loads, the transfer rod 7 can effectively distribute stress and prevent the deformation part 302 from premature wear or damage. Since the transfer rod 7 is directly connected to the second fixed base 2, it provides a direct transfer path for the load; this not only improves the efficiency of load distribution, but also reduces the pressure on other components and prolongs the service life of the entire system.

[0037] Preferably, the cross section of the transfer rod 7 is a V-shaped structure. Compared with a circular or other shaped cross section, the V-shaped cross section can provide higher bending resistance and torsion resistance under the same material dosage, which helps to disperse stress and reduce deformation, thereby enhancing the stability and durability of the transfer rod 7 when bearing load. It can also reduce weight while ensuring sufficient strength, which is particularly important for equipment that needs to be frequently moved or installed; the lightweight design is not only convenient for handling and installation, but also reduces the requirements for the supporting structure and reduces the burden on the overall system. And it can increase the contact area and friction between the transfer rod 7 and the connecting parts, especially during the rotation process, which helps to prevent unnecessary sliding or loosening and improve the stability of the entire system. The V-shaped structure can also better transfer the load from the deformation part 302 to the second fixed base 2, making the load distribution more uniform, reducing the risk of local stress concentration, and extending the service life of the component. And it allows the transfer rod 7 to maintain good mechanical properties at different angles, ensuring the smoothness and reliability of the deformation part 302 when switching between the unfolded and folded states.

[0038] like Figure 1 , Figure 2 As shown, in one embodiment, a notch is provided at one end of the driving part 301 connected to the deformation part 302, and the deformation part 302 is movably arranged in the notch, so that the driving part 301 can move back and forth between the first end and the second end of the deformation part 302. Specifically, in order to enable the driving part 301 to switch between the folded state and the unfolded state in conjunction with the deformation part 302; in this embodiment, a notch is provided at one end of the driving part 301 away from the first fixed base 1, so that the deformation part 302 can be movably sleeved at the notch. On the one hand, the notch is used to constrain the connection between the driving part 301 and the deformation part 302 to prevent the deformation part 302 from falling off; on the other hand, the driving part 301 can be linked with the deformation part 302 to switch quickly between folding and unfolding. Of course, a torsion spring can be sleeved at the rotation axis of the deformation part 302, and the self-restoring property of the torsion spring can be used to quickly switch the deformation part 302 from the unfolded state to the folded state.

[0039] Preferably, a roller 8 is provided in the notch for rotationally fitting with the deformable part 302. The provision of the roller 8 can reduce the friction between the driving part 301 and the deformable part 302, making the two move more smoothly; at the same time, since the deformable part 302 can always be kept in the unfolded state under the action of gravity, the roller 8 can be restricted in the notch to make it ineffective in the current state, thereby improving the overall stability and safety of the support frame.

[0040] Furthermore, if Figure 1-Figure 3As shown, in one embodiment, a guide assembly 9 is arranged between the first fixed base 1 and the second fixed base 2, and the guide assembly 9 includes a first guide rod 901, a second guide rod 902 and a third guide rod 903 connected in sequence, the first guide rod 901 and the third guide rod 903 are connected to the first fixed base 1 and the second fixed base 2 respectively, and two rotation points are formed at the connection between the second guide rod 902 and the first guide rod 901 and the third guide rod 903, which are used to make the first guide rod 901 and the third guide rod 903 rotate synchronously around the rotation points. Specifically, in order to constrain the movement path of the first fixed base 1; in this embodiment, a guide assembly 9 is arranged between the first fixed base 1 and the second fixed base 2, and the guide assembly 9 includes a first guide rod 901, a second guide rod 902 and a third guide rod 903, and the three guide rods are connected in sequence and installed at the opposite end surfaces of the first fixed base 1 and the second fixed base 2; at the same time, a rotation point is formed between two adjacent guide rods, which can rotate around the corresponding rotation point during the movement of the first fixed base 1. Thus, the relative movement between the first fixed base 1 and the second fixed base 2 can be ensured to be more stable and controllable by the guide assembly 9; in particular, when the first fixed base 1 moves, the guide assembly 9 can guide it to move accurately along the predetermined path, thereby ensuring that the entire structure remains stable during operation. Of course, the connection between the second guide rod 902 and the first guide rod 901 and the third guide rod 903 forms two rotation points, so that the first guide rod 901 and the third guide rod 903 can rotate synchronously around each rotation point, ensuring that the movement of all components is coordinated during the unfolding or folding process of the deformation part 302, avoiding structural stress and potential failures caused by asynchrony. Furthermore, synchronous rotation allows good performance to be maintained at different working angles, improving overall flexibility and adaptability. Whether in the unfolded or folded state, the guide assembly 9 can effectively support the movement requirements of the deformation part 302, not only making the structure more compact, but also reducing unnecessary space occupation, suitable for application scenarios requiring high precision, stability and durability.

[0041] Preferably, the first guide rod 901, the second guide rod 902 and the third guide rod 903 are jointly constructed into a Z-shaped structure. This allows greater flexibility in the relative movement between the first fixed base 1 and the second fixed base 2, and can be adjusted at multiple angles and directions for flexible response; at the same time, the Z-shaped geometric layout provides better torsion resistance and reduces the torsional deformation that may occur under load. The sharp-angle connection points formed between each guide rod can effectively disperse stress, thereby improving the rigidity and stability of the overall structure, making its movements coordinated and achieving more precise motion control. Of course, the Z-shaped structure can achieve a longer guide path in a limited space, and helps to evenly transfer the load from the first fixed base 1 to the second fixed base 2, reducing the risk of local stress concentration, extending the service life of the components, and improving the overall performance of the system.

[0042] like Figure 1-Figure 4 As shown, in one embodiment, the first fixed base 1 is detachably provided with a counterweight 10. Specifically, since the auxiliary support structure is an auxiliary extension part of the support frame, in order to facilitate assembly and disassembly, the auxiliary support structure can be used as a separate part; or, when the load on the support frame is light, and the support frame is moved short distances without disassembling the support frame, a counterweight 10 is set at the first fixed base 1, and the counterweight 10 is used to apply a downward gravity to the first fixed base 1 so that the deformation part 302 is kept in the unfolded state. That is: the detachable counterweight 10 allows people to adjust the total weight of the whole according to actual needs, so that the support frame can maintain the best stability and performance under different working conditions. At the same time, the counterweight 10 can significantly increase the mass of the first fixed base 1, thereby improving the center of gravity stability of the overall structure, which is particularly important for application scenarios that need to bear large loads or work on unstable surfaces, and can effectively prevent the risk of overturning. Of course, reducing the overall weight and volume is also convenient for transportation and installation, and simplifying the operation process. In addition, by adding or removing the counterweight 10, the center of gravity of the first fixed base 1 can be adjusted to ensure uniform distribution of the load on the supporting structure, which helps to improve the load-bearing capacity and safety of the system and avoid instability caused by eccentric loads. In addition, the counterweight 10 can absorb and disperse external impact forces to a certain extent, protect key components from damage, and reduce the risk of accidents.

[0043] Furthermore, if Figure 4As shown, in one embodiment, the first fixed base 1 is provided with a locking assembly 11 for locking or unlocking the counterweight 10, and the locking assembly 11 includes a first wedge block 111, a second wedge block 112 and a plurality of locking blocks 113. The first wedge block 111 is slidably fitted with the second wedge block 112 to link the second wedge block 112 to move in the up and down directions. The locking block 113 is rotatably arranged on the second wedge block 112, and when the second wedge block 112 moves upward, the locking block 113 can be rotated to press the counterweight 10, and when the second wedge block 112 moves downward, the locking block 113 can be rotated in the opposite direction to release the counterweight 10. Specifically, since the counterweight 10 is independently arranged and the support frame is installed outdoors, in order to prevent the counterweight 10 from being lost in an unattended place and thus interfering with the overall stability and safety of the support frame; this embodiment provides a locking assembly 11, and utilizes the locking assembly 11 to lock the counterweight 10 at the first fixed base 1. When removing the counterweight 10, the locking state of the locking assembly 11 must be released so that the counterweight 10 can be separated from the first fixed base 1.

[0044] Specifically, the locking assembly 11 includes a first wedge block 111, a second wedge block 112 and a plurality of locking blocks 113. The first wedge block 111 is slidably arranged on the first fixed base 1 in the front-rear direction, and the first wedge block 111 and the second wedge block 112 are provided with a first inclined surface and a second inclined surface on their opposite end surfaces, respectively. The two inclined surfaces slide in contact with each other, so as to promote the second wedge block 112 to move up and down during the movement of the first wedge block 111 in the front-rear direction. The locking block 113 (the present embodiment takes two locking blocks 113 arranged in a mirror image as an example) is rotatably arranged on the first fixed base 1 and is received in the opening of the second wedge block 112, so as to link the locking block 113 to rotate forward and reverse during the movement of the second wedge block 112 in the up and down direction, so as to compress or release the counterweight 10. Figure 4As shown, the first fixed base 1 forms an integral protrusion upward, and the protrusion has a cavity for installing the above-mentioned locking assembly 11; and in order to prevent the counterweight 10 from slipping, the counterweight 10 is also provided with a cavity so that it can be sleeved outside the protrusion to achieve the purpose of axial positioning; in this way, the locking block 113 can extend out of the cavity of the protrusion and stay in the cavity of the counterweight 10, and a flange is provided in the cavity of the counterweight 10 to facilitate abutment or separation with the locking block 113 (that is, the locking block 113 can rotate relative to the above-mentioned flange). When the locking block 113 is rotated to press the flange, the counterweight 10 and the first fixed base 1 can form a whole; conversely, the counterweight 10 can be taken out from the first fixed base 1. Of course, since part of the first wedge block 111 is exposed from the first fixed base 1, it is convenient to apply pushing or pulling force to it after grasping. Therefore, in order to prevent misoperation, locking rings are respectively provided at the first wedge block 111 and the first fixed base 1. When the first wedge block 111 moves to the extreme position, the locking block 113 is in a locked state, the two locking rings are in contact, and it can be locked using a lock with a key.

[0045] Furthermore, if Figure 4 As shown, in one embodiment, the second wedge block 112 is provided with a plurality of limiting openings 114, and the plurality of locking blocks 113 are arranged in the plurality of limiting openings 114 in a one-to-one correspondence, and can abut against the side walls of the limiting openings 114 after the counterweight 10 is released. Specifically, as shown above, the rotation of the locking block 113 is limited by the reciprocating motion of the second wedge block 112 in the up-down direction, and thus, the limiting openings 114 having the same number as the locking block 113 are arranged on the surface of the second wedge block 112, so that one end of the locking block 113 is connected to the second wedge block 112, and the other end thereof passes through the corresponding limiting openings 114 and extends toward the flange direction of the counterweight 10, and the middle part of the locking block 113 is rotatably connected to the protrusion of the first fixed base 1; in this way, when the second wedge block 112 moves upward, one end of the locking block 113 can be linked to move synchronously, so that the locking block 113 can be caused to rotate. By reasonably specifying the height of the limiting opening 114 , the rotation angle of the locking block 113 can be restricted, thereby achieving a reasonable limiting effect.

[0046] On the other hand, Figure 4 As shown, since the second wedge block 112 is movably arranged in the up and down directions, in order to release energy and play a role of shock absorption and buffering, a spring is also arranged at the protrusion of the first fixed base 1, and the spring can be in contact with or separated from the top of the second wedge block 112.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A combined support frame, comprising a frame body, wherein the frame body is provided with a plurality of support legs, characterized in that: The plurality of support legs are provided with a plurality of auxiliary support structures in one-to-one correspondence, and the auxiliary support structures include: A first fixed base is independently provided with the corresponding supporting leg and can move up and down relative to the supporting leg; A second fixed base is suspended below the first fixed base; A plurality of expansion components are arranged at intervals between the first fixed base and the second fixed base, the expansion components include a driving part and a deformation part, the driving part is arranged on the first fixed base and can move with the first fixed base, the deformation part is movably arranged on the second fixed base and connected with the driving part, so that the driving part links the deformation part to form a folded state and an unfolded state, in the folded state, the deformation part is arranged upwardly and tilted relative to the second fixed base, and in the unfolded state, the deformation part is arranged horizontally; In which, the deformation part is respectively formed with a first mounting point and a second mounting point along two vertical directions, and the support column can be selectively set at the first mounting point or the second mounting point. When the support column is set at the first mounting point, it is used to cooperate with the folded state of the deformation part and make the support column and the deformation part parallel to each other. When the support column is set at the second mounting point, it is used to cooperate with the unfolded state of the deformation part and make the support column and the deformation part perpendicular to each other.

2. A combined support frame according to claim 1, characterized in that: Along the length direction of the deformation part, it has a first end and a second end, the first mounting point and the second mounting point are formed at the first end of the deformation part, and the second end of the deformation part is rotatably provided with a transfer rod, and the transfer rod is connected to the second fixed base.

3. A combined support frame according to claim 2, characterized in that: The cross section of the transfer rod is in a V-shaped structure.

4. A combined support frame according to claim 2, characterized in that: A notch is provided at one end of the driving part connected to the deformation part, and the deformation part is movably clamped in the notch, so that the driving part moves back and forth between the first end and the second end of the deformation part.

5. A combined support frame according to claim 4, characterized in that: A roller is arranged in the notch and is used for rotating and fitting with the deformation part.

6. A combined support frame according to any one of claims 1 to 5, characterized in that: A guide assembly is arranged between the first fixed base and the second fixed base, and the guide assembly includes a first guide rod, a second guide rod and a third guide rod which are connected in sequence, the first guide rod and the third guide rod are respectively connected to the first fixed base and the second fixed base, and two rotation points are formed at the connection between the second guide rod and the first guide rod and the third guide rod, which are used to make the first guide rod and the third guide rod rotate synchronously around each of the rotation points.

7. A combined support frame according to claim 6, characterized in that: The first guide rod, the second guide rod and the third guide rod are jointly configured into a Z-shaped structure.

8. The combined support frame according to claim 1, characterized in that: The first fixed base is detachably provided with a counterweight block.

9. A combined support frame according to claim 8, characterized in that: The first fixed base is provided with a locking assembly for locking or unlocking the counterweight block, and the locking assembly includes a first wedge block, a second wedge block and a plurality of locking blocks. The first wedge block is slidably fitted with the second wedge block to link the second wedge block to move in an up and down direction. The locking block is rotatably arranged on the second wedge block, and when the second wedge block moves upward, the locking block can be rotated to press the counterweight block, and when the second wedge block moves downward, the locking block can be rotated in the opposite direction to release the counterweight block.

10. A combined support frame according to claim 9, characterized in that: The second wedge block is provided with a plurality of limiting openings, and the plurality of locking blocks are arranged in the plurality of limiting openings in a one-to-one correspondence, and can abut against the side walls of the limiting openings after the counterweight block is released.

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