Mounting truss

Abstract

The invention relates to the technical field of valve tower installation, in particular to an installation truss which comprises a supporting assembly, a connecting assembly and a connecting assembly. The limiting assembly comprises a rotary drum arranged between the two square pipes, and a first elastic piece is arranged on the outer wall of the rotary drum. The valve tower is restrained by the elastic piece, so that the safety of mounting and dismounting of the valve tower is ensured; meanwhile, the whole truss is formed by connecting detachable steel pipes and can adapt to various working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of valve tower installation, in particular to an installation truss. Background Art

[0002] At present, the STATCOM system includes 1 valve tower, each valve tower contains three phases A, B, and C, which are distributed in the valve hall in single or multiple rows, each row is basically three layers, and each layer is composed of several valve section assemblies. The size of a single valve section assembly is: 3320*1690*920mm, and the weight is about 2t; when installing the valve section assembly in the prior art, a crane is usually used for installation, but due to the reuse of the valve hall or the construction conditions and cost of the valve hall, the internal space of the valve hall and the civil strength of the valve hall are limited, and the crane cannot be laid. In addition, the height of the valve tower is high, the weight of the valve section assembly is very heavy, the valve hall is closed, and the crane cannot be used, which makes the problem more prominent.

[0003] After searching the prior art, it was found that the Chinese patent with publication number CN206857952U disclosed a universal converter valve tower hoist, which includes a frame, a lifting lug, a pressure equalizing ring and an electric hoist hanging point; the frame includes a main beam, a connecting beam, an auxiliary beam, a main water pipe beam and a lightning arrester beam, and multiple main beams, connecting beams, auxiliary beams, main water pipe beams and lightning arrester beams are provided. The main beam and the connecting beam are fixedly connected and form a rectangular frame structure, and the main beam and the auxiliary beam also form a rectangular frame structure. The lifting lugs include hanging lifting lugs, lifting lifting lugs, lightning arrester lifting lugs, two end lifting lugs and middle lifting lugs; the utility model can simulate the valve tower installation process. To adopt the above installation method, the civil engineering of the valve hall needs to be modified in advance, and a crane is installed on the top of the valve hall. The requirements for the valve hall space and the top load-bearing are high, the cost is high, and the valve hall space and the top load-bearing of some renovation projects do not have the conditions for installing a crane, so this method is not feasible. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a mounting truss, comprising a support assembly, including at least two square tubes, a hand chain hoist provided at one end of the square tubes;

[0007] The limiting component comprises a rotating drum arranged between the two square tubes, and a first elastic member is arranged on the outer wall of the rotating drum.

[0008] As a preferred solution for installing the truss of the present invention, wherein: a placement frame is provided at one end of the square tube;

[0009] Gaskets are provided at both ends of the square tube, and a gasket is provided at one end of the placement rack.

[0010] As a preferred solution for installing the truss of the present invention, an I-beam is installed between the two placement racks, and the hand winch is arranged on the outer wall of the I-beam.

[0011] As a preferred solution for installing the truss of the present invention, one end of the square tube away from the placement rack is installed on the surface of the movable bracket, and the outer wall of the movable bracket is provided with a universal wheel.

[0012] As a preferred solution of the installation truss of the present invention, wherein: a connecting plate is provided on the outer wall of the square tube, a supporting rod for the rotation of the rotating drum is provided between the two square tubes, and connecting plates are provided at both ends of the supporting rod;

[0013] The rotating drum is connected to the outer wall of the supporting rod by means of a second elastic member.

[0014] As a preferred solution for installing the truss of the present invention, wherein: the rotating drum is connected to the outer wall of the supporting rod by means of a second elastic member;

[0015] The rotating drum is divided into a first rotating drum, a second rotating drum and a receiving roller, and the first rotating drum and the second rotating drum are both provided with a disc at one end close to each other, wherein the outer wall of one of the discs is provided with a first limiting block, and the surface of the other disc is provided with a first limiting groove for the first limiting block to slide;

[0016] The receiving roller is used to connect the first elastic member.

[0017] As a preferred solution for installing the truss of the present invention, wherein: the ends of the first rotating drum and the second rotating drum away from each other are both equipped with receiving rollers, and the outer wall array of the receiving rollers is provided with a first abutment block;

[0018] The outer wall of the support rod is provided with a sleeve, and the sleeve is fixedly mounted with a second limiting block close to the outer wall of the rotating drum.

[0019] As a preferred solution for installing the truss of the present invention, wherein: a limit plate is provided on the outer wall of the sleeve, and a first through hole is penetrated through the limit plate for the first elastic member to move;

[0020] The outer wall of the first elastic member is provided with a blocking block;

[0021] A hook is provided at one end of the first elastic member.

[0022] As a preferred solution for installing the truss of the present invention, wherein: a second limiting groove is provided on the inner wall of the sleeve, a third limiting block is slidably provided inside the second limiting groove, and the third limiting block is connected to the inner wall of the second limiting groove by a third elastic member;

[0023] The outer wall array of the support rod is provided with a second abutment block, and the outer wall of the second abutment block is provided with a first arc surface.

[0024] As a preferred solution for installing the truss of the present invention, wherein: a sliding block is provided on the inner wall of the sleeve;

[0025] The outer wall of the support rod is provided with a third sliding groove for the sliding block to slide.

[0026] Beneficial effects of the present invention: The present invention relies on the elastic member to constrain the valve tower, thereby ensuring the safety of the installation and disassembly of the valve tower; at the same time, the entire truss is connected by detachable steel pipes and can adapt to various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0028] Figure 1 Schematic diagram of the overall structure of the installed truss.

[0029] Figure 2 For installing trusses Figure 1 Schematic diagram of the enlarged structure of area A in the middle.

[0030] Figure 3 Schematic diagram of the rotating drum structure for installing trusses.

[0031] Figure 4 Schematic diagram of the support rods and outer surface structure for installing the truss.

[0032] Figure 5 Schematic diagram of the sleeve structure for installing the truss.

[0033] Figure 6 Schematic diagram of the sleeve structure for installing the truss. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1

[0038] Reference Figures 1 to 3 , which is the first embodiment of the present invention, and provides a mounting truss, which includes a support assembly 100, including at least two square tubes 101, and a hand chain hoist 102 provided at one end of the square tube 101;

[0039] The limiting assembly 200 includes a rotating drum 201 disposed between two square tubes 101 , and a first elastic member 202 is disposed on the outer wall of the rotating drum 201 .

[0040] The upper ends of the two square tubes 101 can be installed together, and the lower ends can be separated to form a triangle. The hand chain hoist 102 is installed at the intersection of the two square tubes 101, and the hand chain hoist 102 is connected to the valve tower; the first elastic member 202 is a soft elastic rope, one end of the first elastic member 202 is bound to the valve tower, and the other end is fixedly connected to the outer wall of the rotating drum 201; the valve tower is lifted by the hand chain hoist 102, and the lifting height will pull the first elastic member 202 at the same time, and finally the first elastic member 202 is lifted. Straighten it, which is equivalent to adding a pulling force at the bottom of the valve tower, and cooperate with the hand winch 102 to limit the valve tower to prevent the valve tower from deflecting due to inertia during movement, which may lead to collision. Then move it to the position where it needs to be installed, and use the hand winch 102 to lower the valve tower; the hand winch 102 can be any product available on the market. At the same time, the advantage of using the hand winch 102 is that the equipment can be assembled by itself according to the working conditions. The use of electric motors will be restricted and difficult to disassemble and transport.

[0041] In summary, under specific working conditions, the square tube 101 is installed, and then the valve tower is lifted by the hand winch 102, moved to the installation position, and then the valve tower is lowered.

[0042] Example 2

[0043] Reference Figures 1 to 4, which is the second embodiment of the present invention, and is different from the first embodiment in that: it also includes. In the previous embodiment, the installation truss includes a square tube 101 with a placement frame 103 at one end;

[0044] Both ends of the square tube 101 are provided with gaskets 101 a , and one end of the placement frame 103 is provided with a gasket 101 a .

[0045] Among them, a gasket 101a with a cross-section larger than the square tube 101 is fixedly installed at the upper and lower ends of the square tube 101, and the same gasket 101a is fixed on the lower surface of the placement rack 103. The gaskets 101a are disassembled and installed by bolts and threads. When there is a requirement for height, the square tube 101 can continue to be installed between the square tube 101 and the placement rack 103 to adjust the height, and then the two gaskets 101a are connected with bolts to fix the entire frame.

[0046] An I-beam 104 is installed between the two placement racks 103 , and the hand chain hoist 102 is arranged on the outer wall of the I-beam 104 .

[0047] In this embodiment, four square tubes 101 are selected, among which an I-beam 104 is installed between two of the square tubes, and the two I-beams 104 can be parallel, and a hand winch 102 is detachably installed under the I-beam 104, and then a rotating drum 201 is installed between the square tubes 101 at the same end of the two I-beams 104. The advantage of such a design is that the two opposite sides of the valve tower are restricted by the hand winch 102, and the other two opposite sides are pulled by the first elastic member 202, which is equivalent to pulling the valve tower at the four corners. When the first elastic member 202 is pulled to the maximum extension limit, the first elastic member 202 is equivalent to a rope that cannot be deformed, so when the truss is pushed to move, the valve tower is equivalent to being restricted and unable to move, thereby reducing the shaking of the valve tower and increasing the safety of work.

[0048] One end of the square tube 101 away from the placement frame 103 is installed on the surface of the mobile bracket 105, and the outer wall of the mobile bracket 105 is provided with a universal wheel 106.

[0049] Among them, the movable bracket 101 is arranged at the lower end of the square tube 101, and a universal wheel 106 is fixedly installed on the lower surface of the movable bracket 105, and the universal wheel 106 is a self-locking movable wheel that can be directly purchased on the market. When the valve tower is pulled up, the universal wheel 106 is unlocked, the overall truss is moved, and then it reaches the working position, the universal wheel 106 is locked, and the valve tower is installed.

[0050] A connecting plate 101 b is disposed on the outer wall of the square tube 101 , a supporting rod 107 for the rotating drum 201 to rotate is disposed between the two square tubes 101 , and connecting plates 101 b are disposed at both ends of the supporting rod 107 .

[0051] Both ends of the support rod 107 are fixedly installed with connecting plates 101b. Similarly, the connecting plate 101b of the support rod 107 is connected to the connecting plate 101b of the outer wall of the square tube 101 by bolts and nuts. The advantage of this design is that the support frame 107 can be used as a reinforcing rib. At the same time, the connecting plate 101b is used in conjunction with the bolts to achieve disassembly. The advantage of the connecting plate 101b is that the reinforcing rib can be disassembled. At the same time, the reinforcing rib does not need to be directly connected to the square tube 101, which prevents rainwater from entering the interior of the square tube 101 during daily use, causing internal water seepage and long-term damage to the square tube 101.

[0052] In summary, the support rod 107 is installed vertically with the I-beam 104, and the hand winch 102 is installed on the lower surface of the I-beam 104. When the hand winch 102 pulls up the valve tower, it will also pull the first elastic member 202 so that the first elastic member 202 exerts a downward pulling force on the valve tower. Then, the hand winch 102 is used to limit the valve tower to prevent the valve tower from being knocked due to inertia when the truss is pushed.

[0053] Example 3

[0054] Reference Figures 1 to 6 , which is the third embodiment of the present invention, and which is different from the first two embodiments in that: it includes a rotating drum 201 divided into a first rotating drum 201b, a second rotating drum 201c and a receiving roller 201d;

[0055] The rotating drum 201 is connected to the outer wall of the supporting rod 107 by means of the second elastic member 201a;

[0056] The first rotating drum 201b and the second rotating drum 201c are both provided with a disc 201e at one end close to each other, wherein the outer wall of one of the discs 201e is provided with a first limiting block 201b-1, and the surface of the other disc 201e is provided with a first limiting groove 201c-1 for the first limiting block 201b-1 to slide;

[0057] The receiving roller 201 d is used to connect the first elastic member 202 .

[0058] Among them, the first rotating drum 201b and the second rotating drum 201c are connected to the outer wall of the support rod 107 through the second elastic member 201a. The second elastic member 201a adopts a spring sheet. When the first rotating drum 201b or the second rotating drum 201c rotates, it will drive the spring sheet to contract, so that the first rotating drum 201b and the second rotating drum 201c can obtain potential energy; the outer wall of the storage roller 201a is connected to the first elastic member 202; the outer surface of the storage roller 201a is wrapped with a non-elastic rope. When the first elastic member 202 is pulled, the rope will be pulled at the same time, and then the rope will drive the rotating drum to rotate; it should be noted here that the second elastic member 201a requires a greater deformation force than the first elastic member 202. When the valve tower moves upward, it will preferentially pull the first elastic member 202 to stretch, and then drive the rope to rotate, so that the storage roller 201d rotates, driving the second elastic member 201a to contract. A plurality of first limit blocks 201b-1 are installed in an array on the outer wall of the disk 201e of the first rotating drum 201b, and the first limit blocks 201b-1 slide along the inside of the first limit groove 201c-1, and the first limit groove 201c-1 is a fan-shaped groove, so that the first rotating drum 201b and the second rotating drum 201c can rotate relative to each other.

[0059] The ends of the first rotating drum 201b and the second rotating drum 201c that are away from each other are both equipped with a receiving roller 201d, and the outer wall array of the receiving roller 201d is provided with a first abutment block 201d-1;

[0060] A sleeve 203 is disposed on the outer wall of the support rod 107 , and a second limiting block 203 a is fixedly mounted on the sleeve 203 close to the outer wall of the rotating drum 201 .

[0061] Among them, the first rotating drum 201b and the second rotating drum 201c are fixedly connected to the end near the square tube 101. When the hand chain hoist 102 pulls the valve tower upward, the storage roller 201d is pulled and rotated by the rope, and the first limit block 201b-1 will slide along the inside of the first limit groove 201c-1. When one of the four hand chain hoists 102 pulls too fast, the first limit block 201b-1 slides to the side wall of the first limit groove 201c-1, so that the person who pulls too fast cannot continue to rotate the storage roller 201d. At this time, wait for the person on the opposite side to pull to the same height position to prevent the valve tower from tilting during the lifting process, resulting in unbalanced force. The workers on the same side can rely on naked eye observation when pulling the hand chain hoist 102 to ensure the level.

[0062] The first abutment block 201d-1 is a triangular strip. When the second limit block 203a on the outer wall of the sleeve 203 enters between the two first abutment blocks 201d-1, it will be stuck, forcing the sleeve 203 and the rotating drum not to rotate relative to each other.

[0063] A limiting plate 203b is provided on the outer wall of the sleeve 203, and a first through hole 203b-1 is penetrated through the limiting plate 203b for the first elastic member 202 to move;

[0064] A blocking block is disposed on the outer wall of the first elastic member 202 .

[0065] Among them, the sleeve 203 is rotatably installed on the surface of the support rod 107, and a limit plate 203b extends from the outer wall. The first elastic member 202 passes through the first through hole 203b-1, and there is a blocking block at the connection between the first elastic member 202 and the rope wrapped around the storage roller 201d. The blocking block must be larger than the first through hole 203b-1. When the valve tower tilts or falls, the second elastic member 201a will release potential energy, causing the storage roller 201d to rotate rapidly, and the blocking block hits the surface of the limit plate 203b, forcing the sleeve 203 to rotate.

[0066] In order to more conveniently connect the first elastic member 202 to the valve tower, a hook 202a is fixed to the connecting end of the first elastic member 202. The hook 202a is a commercially available hook with an opening and closing mouth. When in use, the hook 202a is pulled to hang on the bracket on the lower surface of the valve tower.

[0067] The inner wall of the sleeve 203 is provided with a second limiting groove 203c, and a third limiting block 204 is slidably provided inside the second limiting groove 203c. The third limiting block 204 is connected to the inner wall of the second limiting groove 203c by means of a third elastic member 205;

[0068] The outer wall of the support rod 107 is provided with a second abutment block 206 in an array, and the outer wall of the second abutment block 206 is provided with a first arc surface 206 a.

[0069] Among them, the inner wall array of the sleeve 203 is a second limiting groove 203c, and a third elastic member 205 is fixedly installed at the bottom of each second limiting groove 203c, and a third limiting block 204 is fixedly installed at the other end of the third elastic member 205. When the sleeve 203 rotates, the third limiting block 204 will slide along the first arc surface 206a, and the third limiting block 204 will slide into the second limiting groove 203c. When reversed, the third limiting block 204 will abut against the surface of the second abutting block 206 and cannot be reversed.

[0070] The inner wall of the sleeve 203 is provided with a slider 203d;

[0071] The outer wall of the support rod 107 is provided with a third sliding groove 107a for the sliding block 203d to slide.

[0072] A slider 203d is provided on the inner wall of the sleeve 203, and the slider 203d slides along the inside of the third slide groove 107a. The third slide groove 107a is a spiral groove. When the sleeve 203 rotates, the slider 203d slides along the third slide groove 107a, causing the sleeve 203 to move toward the rotating drum 201, thereby causing the second limit block 203a to enter between the two first resistance blocks 201d-1.

[0073] In summary, when it is needed, the truss is moved to the top of the valve tower and the universal wheel 106 is locked. Pull the hook 202a and hang it on the bracket on the lower surface of the valve tower. Then four people pull the four hand winches 102 respectively. Figure 1 The worker under one of the I-beams 104 shown in the figure pulls at a faster speed, which will cause the first rotating drum 201b and the second rotating drum 201c to rotate asynchronously, limiting the rotation of one of them, so as to ensure that when the worker pulls the valve tower, it is as level as possible to prevent uneven force caused by unevenness, damage to the equipment, and the risk of falling. Continuing to pull the valve tower up will first pull the first elastic member 202, then pull the rope to drive the storage roller 201d to rotate, and then drive the first rotating drum 201b or the second rotating drum 201c to rotate, and then drive the second elastic member 201a to contract, thereby forming a restriction on the valve tower by the first elastic member 202 and the hand winch 102, ensuring the safety of installation and lifting, and then ensuring the level of the valve tower.

[0074] If the first elastic member 202 at the bottom breaks, the hand chain hoist 102 will ensure that the valve tower will not fall. If the hand chain hoist 102 breaks, the moment the valve tower falls, the second elastic member 201a will quickly contract the first elastic member 202, and the blocking block will hit the limiting plate 203b at a certain speed, pushing the sleeve 203 to rotate and move closer to the rotating drum 202. Then the second limiting block 203a on the outer wall of the sleeve 203 will enter between the two first abutting blocks 201d-1 to limit the storage roller. 201d rotates, and at the same time, one of the rotating drums will be restricted from rotating. Through the cooperation of the first limit block 201b-1 and the first limit groove 201c-1, the other rotating drum will also be restricted from rotating. When the valve tower falls, it will not drive the storage roller 201d to rotate, so the valve tower will pull the first elastic member 202 to extend. This process is a buffering and force release process to ensure that the valve tower will not fall. Even if the first elastic member 202 is broken, this process will reduce the potential energy of the valve tower, minimize the impact force of the fall, and reduce the operation risk.

[0075] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0076] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0077] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A mounting truss, characterized in that: include, A support assembly (100) comprises at least two square tubes (101) and a hand chain hoist (102) arranged at one end of the square tube (101); The limiting assembly (200) comprises a rotating drum (201) arranged between the two square tubes (101), and a first elastic member (202) is arranged on the outer wall of the rotating drum (201).

2. The mounting truss according to claim 1, characterized in that: A placement rack (103) is provided at one end of the square tube (101); Gaskets (101a) are provided at both ends of the square tube (101), and a gasket (101a) is provided at one end of the placement rack (103).

3. The mounting truss according to claim 2, characterized in that: An I-beam (104) is installed between the two placement racks (103), and the hand chain hoist (102) is arranged on the outer wall of the I-beam (104).

4. The mounting truss according to claim 3, characterized in that: One end of the square tube (101) away from the placement rack (103) is mounted on the surface of a movable bracket (105), and a universal wheel (106) is provided on the outer wall of the movable bracket (105).

5. The mounting truss according to claim 4, characterized in that: The outer wall of the square tube (101) is provided with a connecting plate (101b), a supporting rod (107) for the rotating drum (201) to rotate is provided between the two square tubes (101), and connecting plates (101b) are provided at both ends of the supporting rod (107); The rotating drum (201) is connected to the outer wall of the supporting rod (107) by means of a second elastic member (201a).

6. The mounting truss according to claim 5, characterized in that: The rotating drum (201) is connected to the outer wall of the supporting rod (107) by means of a second elastic member (201a); The rotating drum (201) is divided into a first rotating drum (201b), a second rotating drum (201c) and a storage roller (201d); a disc (201e) is provided at one end of the first rotating drum (201b) and the second rotating drum (201c) that are close to each other; a first limiting block (201b-1) is provided on the outer wall of one of the discs (201e); and a first limiting groove (201c-1) for the first limiting block (201b-1) to slide is provided on the surface of the other disc (201e); The receiving roller (201d) is used to connect the first elastic member (202).

7. The mounting truss according to claim 6, characterized in that: The ends of the first rotating drum (201b) and the second rotating drum (201c) that are away from each other are both equipped with a collection roller (201d), and the outer wall array of the collection roller (201d) is provided with a first abutment block (201d-1); The outer wall of the support rod (107) is provided with a sleeve (203), and the sleeve (203) is fixedly mounted with a second limiting block (203a) close to the outer wall of the rotating drum (201).

8. The mounting truss according to claim 7, characterized in that: The outer wall of the sleeve (203) is provided with a limiting plate (203b), and the limiting plate (203b) is penetrated by a first through hole (203b-1) through which the first elastic member (202) can move; The outer wall of the first elastic member (202) is provided with a blocking block; A hook (202a) is provided at one end of the first elastic member (202).

9. The mounting truss according to claim 8, characterized in that: The inner wall of the sleeve (203) is provided with a second limiting groove (203c), a third limiting block (204) is slidably provided inside the second limiting groove (203c), and the third limiting block (204) is connected to the inner wall of the second limiting groove (203c) by means of a third elastic member (205); The outer wall array of the support rod (107) is provided with a second abutment block (206), and the outer wall of the second abutment block (206) is provided with a first arc surface (206a).

10. The mounting truss according to claim 9, characterized in that: The inner wall of the sleeve (203) is provided with a sliding block (203d); The outer wall of the support rod (107) is provided with a third sliding groove (107a) for the sliding block (203d) to slide.

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